/\..^J-
2007
California
Plumbing
Code
California Code of Regulations
Title 24, Part 5
California Building
Standards Commission
Based on 2006 Uniform Plumbing Code®
EFFECTIVE
JANUARY 1, 2008
(For Errata and Supplements, see History Note Appendix)
Copyright to 2006 UPC® Held by
International Association of Plumbing and Mechanical Officials
5001 East Philadelphia Street
Ontario, California 91761-2816
Copyright® to all California State Provisions
Held By
California Building Standards Commission
2525 Natomas Park Drive, Suite 130
Sacramento, CA 95833-2936
First Printing, IViay 1, 2007
Printed in The United States
PREFACE
Tliis document is the 5th of 12 Parts of die official triennial compilation and publication of the adoptions,
amendments and repeal of administrative regulations to California Code of Regulations, Title 24, also referred
to as the California Building Standards Code. Part 5 is kiiown as tlie California Plumbing Code and incorpo-
rates, by adoption, tlie 2006 edition of the Uniform Plumbing Code of die International Association of
Plumbing and Mechanical Officials with tlie California amendments.
The California Building Standards Code is published in its entirety every diree years by order of die California
legislature, widi supplements published in intervening years. The California legislature delegated audior-
ity to various State agencies, boards, commissions and departments to create buildmg regulations to imple-
ment die State's statutes. These building regulations or standards, have the same force of law, and take
effect 180 days after dieir publication unless otherwise stipulated. Tlie California Building Standards Code
applies to occupancies in the State of California as annotated.
A city, county or city and county may establish more restrictive building standards reasonably necessary
because of local climatic, geological or topograpliical conditions. Findings of the local condition(s) and die
adopted local building staiidard(s) must be filed widi die California Building Standards Commission to
become effective and may not be effective sooner dian die effective date of this edition of California Building
Standards Code. Local building standards that were adopted and applicable to previous editions of die
California Building Standards Code do not apply to diis edition widiout appropriate adoption and die
required filing.
To familiarize yourself widi die format of diis code, it is suggested diat users review die following contents:
( ) • How To Distingtiisli Model Code Language Finm California Amendments
• Matrix Adoption Tables
Should you find publication (e.g., typograpliical) errors or inconsistencies in diis code or wish to offer com-
ments toward improving its format, please address your comments to:
California Building Standards Commission
2525 Natomas Park Drive, Suite 130
Sacramento, CA 95833-2936
Phone: (916)263-0916
FAX: (916)263-0959
Web Page: www.bsc.ca.gov
ACKNOWLEDGEMENT
The 2007 California Building Standards Code (Code) was developed through the outstanding collaborative
efforts of the Department of Housing and Corrununity Development, the Division of State Architect, the
Office of the State Fire Marshal, the Office of Statewide Health Planning and Development, the California
Energy Commission, and the Building Standards Commission (Commission).
This collaborative effort included the assistance of the Commission's Code Advisory Committees and many
other volunteers that worked tirelessly to assist the Commission in the production of this Code.
Members of the Building Standards Commission
Secretary Rosario Marin - Chair Christina Jamison
Isam Hasenin - Vice-Chair Stephen Jensen
James Barthman Robert Pernell
Kim Blackseth Richard Sawhill
Susan Dowty Steven Winl<el
David Walls - Executive Director
Thomas Morrison - Deputy
Executive Director
For questions on California state agency amendments; please refer to the contact Ust on the following page.
IV
California Code of Regulations Title 24
California Agency information Contact List
California Energy Commission
Energy Hotline (800) 772-3300
Building Efficienq^ Standards
Appliance Efficiency Standards
Compliance Manual /Forms
California State Lands Commission
Marine Oil Terminals ....... . . . . . .(562) 499-6317
California State Library
Construction Standards (916) 445-9604
Corrections Standards Autliority
Local Adult Jail Standards (916) 324-1914
Local Juvenile Facility Standards . . .(916) 324-1914
Department of Consumer Affairs -
Acupuncture Board
Office Standards (916) 445-3021
Department of Consumer Affairs -
Board of Pliarmacy
Pharmacy Standards (916) 574-7900
Department of Consumer Affairs - Bureau of
Barbering and Cosmetology
Barber and Beauty Shop and
CoUege Standards (916) 952-5210
Department of Consumer Affairs - Bureau of
Home Furnisliings and Tliermai Insulation
Insulation Testing Standards (916) 574-2041
Department of Consumier Affairs -
Structural Pest Control Board
Structural Standards (800) 737-8188
Department of Consumer Affairs -
Veterinary Medical Board
Veterinary Hospital Standards (916) 263-2610
Department of Food and Agriculture
Meat & Poultry Packing Plant
Standards .(916) 654-0509
Dairy Standards (916) 654-0773
Department^ Health Services "^^^^^
Organized Camps Standards (916) 449-5661
Public Swimming Pools
Standards (916) 449-5661
Asbestos Standards (510) 620-2874
Department of Housing and Community
Development
Residential - Hotels, Motels, Apartments,
Single-Family Dwellings (916) 445-9471
PermaiTent Structures in Mobilehome and
Special Occupancy Parks (916) 445-9471
Factory-Built Housing, Manufactured . .
Housiiig and Commercial Modular .(916) 445-3338
Mobile Homes - Permits & IiispectioiTS
Northern Region (916) 255-2501
Southern Region (951) 782-4420
Employee Housing Standards (916) 445-9471
Department of Water Resources
Gray Water Installations Standards .(916) 651-9667
Division of the State Architect - Access
Compliance
Access Compliance Standards (916) 445-8100
Division of the State Architect - Structural
Safety
Public Scliools Standards (916) 445-8100
Essential Services Building
Standards (916) 445-8100
Division of the State Architect - State Historical
Building Safety Board
Alternative Building Standards (916) 445-8100
Office of Statewide Health Planning and
Development
Hospital Standards (916) 654-3139
Skilled Nursing Facility Standards .(916) 654-3139
Clinic Standards (916) 654-3139
Permits (916) 654-3362
Office of the State Fire IVIarshal
Code Development and Analysis . .(916) 445-8200
Fu-e Safety Standards (916) 445-8200
Fireplace Standards (916) 445-8200
Day Care Centers Standards (916) 445-8200
Exit Standards (916) 445-8200
UPC FOREWORD
Not Adopted by The State of California
The advantages of a uniform plumbing code adopted by various local jurisdictions has long been recog-
nized. Disorder in the industry as a result of widely divergent plumbing practices and the use of many dif-
ferent, often conflicting, plumbing codes by local jurisdictions influenced the Western Plumbing Officials
Association (now the International Association of Plumbing and Mechanical Officials [lAPMO]) to form a
committee of plumbing inspectors, master and journeyman plumbers, and sanitary and mechanical engi-
neers, assisted by public utility companies and the plumbing industry to create a basic plumbing document
for general use. The product of this effort, the first edition of the Uniform Plumbing Cod^ (UPC) was offi-
cially adopted by lAPMO in 1945. The widespread use of this code over the past five decades by jurisdic-
tions throughout the United States and internationally is testament to its merit.
With the publication of the 2003 Edition of the Uniform Plumbing Cod^, another significant milestone was
reached. For the first time in the history of the United States, a plumbing code was developed through a
true consensus process. The 2006 edition represents the most current approaches in the plumbing field
and is the second edition developed under the ANSI consensus process. Contributions to the content of
the code were made by every segment of the built industry, including such diverse interests as consumers,
enforcing authorities, installers/maintainers, insurance, labor, manufacturers, research/standards/testing
laboratories, special experts, and users.
The UPC is designed to provide consumers with safe and sanitary plumbing systems while, at the same
time, allowing latitude for innovation and new technologies. The public at large is encouraged and invited
to participate in lAPMO's open cdnsensus code development process. This code is updated every three
years. A code development timeline and other relevant information is available at lAPMO's website at
www.iapmo.org.
The Uniform Plumbing Cod^ is dedicated to all those who, in working to achieve "the ultimate plumbing
code," have unselfishly devoted their time, effort, and personal funds to create and maintain this, the finest
plumbing code in existence today.
The 2006 Uniform Plumbing Cod^ is supported by the American Society of Sanitary Engineering (ASSE),
the Mechanical Contractors Association of America (MCAA), the Plumbing-Heating-Cooling Contractors
National Association (PHCC-NA), the United Association (UA), and the World Plumbing Council (WPC).
The presence of these logos, while reflecting support, does not imply any ownership of the copyright to the
UPC, which is held exclusively by lAPMO. Further, the logos of these associations indicates the support
of lAPMO's open, consensus process being used to develop lAPMO's codes and standards.
The addresses of the organizations are as follows:
ASSE - 901 Canterbury Road, Suite A • Westlake, OH 44145-7201 • (440) 835-3040
MCAA- 1385 Piccard Drive • Rockville, MD 20850 • (301) 869-5800
PHCC-NA - PO Box 6808 • Falls Church, VA 22046 • (800) 533-7694
UA - 901 Massachusetts Avenue NW • Washington, DC 20001 • (202) 628-5823
WPC - WPC Secretary • c/o The Institute of Plumbing • 64 Station Lane • Hornchurch Essex
RM12 6NB • United Kingdom • +44 17-08-47-27-91
Code changes made to the original amalgamated code are marked in the
margins as follows.
■^— An arrow denotes a deletion | A vertical line denotes a change
VI
TABLE OF CONTENTS
California Plumbing Code Preface Hi
California Building Standards Commission Contact List v
UPC Foreword vi
Hoiv to Distinguisli Model Code Language from California Amendments. viii
Related Publications and Services ix
California fJlatrix Adoption Tables xii
Chapter 1 California General Code Provisions , 1
Chapter 2 Definitions 15
Chapters General Regulations 27
Chapter 4 Plumbing Fixtures and Fixture Fittings 37
Chapters Water Heaters 53
Chapter 6 Water Supply and Distribution ; 109
Chapter 7 Sanitary Drainage 129
Chapter 8 Indirect Wastes : 143
Chapter 9 Vents 147
Chapter 10 Traps and Interceptors : 151
Chapter 11 Storm Drainage ,..159
Chapter 12 Fuel Piping 171
Chapter 13 Health Care Facilities and !\/ledical Gas and Vacuum Systems 223
Chapter 14 Mandatory Referenced Standards 245
Chapter 15 Firestop Protection 283
Chapter 16 Gray Water Systems 285
/Appencf/x Chapter 1 Administration 301
Appendix A Recommended Rules for Sizing the Water Supply System 311
Appendix B Explanatory Notes on Combination Waste and Vent Systems 327
Appendix D Sizing Stormwater Drainage Sysetms 329
Appendix E Manufactured/Mobile Home Parks and Recreational Vehicle Parks 337
Appendix F Firefighter Breathing Air Replenishment Systems 349
Appendix G [DWR] Graywater Systems 352,1
Appendix I Installation Standards.., 353
Appendix K Private Sewage Disposal Systems 453
Appendix L Alternate Plumbing Systems 465
Useful Tables 473
Index 481
History Note Appendix 493
VII
HOW TO DISTINGUISH MODEL CODE LANGUAGE
FROM CALIFORNIA AMENDMENTS
To distinguish between model code language and incorporated California amend-
ments, including exclusive California standards California amendments will appear
in italics. Symbols in the margins indicate the status of code changes as follows:
[SFM] This symbol identifies which state agency(s) have amended a section of
model code. For a complete listing of state agencies, refer to the Application
Sections within Chapter 1.
II This symbol indicates that a change has been made to a California amend-
ment.
*** This symbol indicates that model language has been deleted within a
California amendment.
^ This symbol indicates deletion of California language.
VIII
®
RELATED PUBLICATIONS AND SERVICES
The Documents Listed are Not by this Reference Adopted by The State of California.
lAPMO provides a variety of otiner products viUidn are usefui for inspectors, building officials, arclnitects, engineers,
manufacturers, contractors, plumbers, and apprentices.
lAPMO Headquarters Directory
5001 East Philadelphia Street, Ontario, California 91761-2816
Publication Order Desit Phone: 800-85-IAPMO
Publication Toll Free Fax: 877-85-CODES
E-mail: publications@iapmo.org
Website: www.iapmo.org
Free Code Question Answers & Analysis: 800-201-0335
Uniform Plumbing Code - 2006 Edition:
The Uniform Plumbing Code is tlie most widely adopted plumbing code in the world. The 2006 edi-
tion contains complete "turnkey" requirements for tl^e installation and maintenance of plumbing sys-
tems, all in one easy to use book.
Uniform Piumblng Code Illustrated Training IVIanual:
The UPC Illustrated Training Manual is an excellent reference for anyone involved m the plumbing
industry. It contains an extensive definitions section and several hmidred compreheiasive technical dia-
grams and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the
intent and use of the Code.
Uniform Plumbing Code Study Guide:
Tliis book is tlie perfect complement to the UPC Illustrated Training Manual. Alone, if constitutes a
complete self-study course for learning the UPC. It has hundreds of questions, general practice exams,
and plumbing matih, pipe sizing exercises and fitting identification. A big help in getting you ready for
a certification exam!
Uniform Plumbing Code Answers & Analysis Manual:
This increasiiig popular manual is tlie result of ongoing work by lAPMO's Answers & Analysis
Committee. Updated annually, it contains hmidreds of questions and answers. Many of tliese questions
arise in the daily administration of the code.
Cumulative Analysis of Uniform Plumbing Code Changes:
An excellent reference for learning and understanding plimibing code changes adopted at the Annual
Education and Business Conferences. It is a useful tool for preparing code change proposals.
Uniform Mechanical Code - 2006 Edition:
The Uniform Mechanical Code contains complete requirements for tlie installation and maintenance of
heating, ventilating, cooldng and refrigeration systems.
Uniform Mechanical Code Illustrated Training Manual:
Contains technical diagrams and illustrations tliat demonstrate the mtent and use of tlie UMC. A great
reference for everyone uivolved in Mechanical HVACR design and installation.
Uniform Mechanical Code Study Guide:
^^"^^^"■^^lie'StiMytGmdSCaT^coinplete se^^^
a certification exam! Tliis book is the perfect complement to die UMC Illustrated Training Manual.
Cumulative Analysis of Uniform Mechanical Code Changes:
The UMC Cumulative Analysis is a very useful tool in targeting tlie latest changes between editions of
tlie code. It is an excellent guide for anyone proposing a UMC cliange.
ix
RELATED PUBLICATIONS AND SERVICES
The Documents Listed are Not by this Reference Adopted by The State of California.
Uniform Plumbing Code - Spanisli Edition:
The UPC Spanish Edition was translated in response to numerous requests from jurisdictions with
large Spanish-speaking populations.
Dwelling Requirements of the Uniform Plumbing Code:
This book contains the UPC requirements that apply to one and two family dwellings only; its illus-
trations and photographs make it especially useful for combination dwelling inspectors and the do-it-
yourselfer
Uniform Swimming Pool, Spa, and Hot Tub Code:
Contains complete and current guidelines for piping systems serving these increasingly popular
amenities.
Uniform Solar Energy Code:
The Uniform Solar Energy Code is a unique document that provides a complete set of regulations and
gtiidelines that cover both plumbing and mechanical systems in one "turrikey" package. The code is
ideal for use by inspectors, jurisdictions and the installation industry.
Drain Waste and Vent Calculator:
A slide-rule style calculator provides quick and simple access to the fixture unit and sizing tables of
Chapter 7 of the UPC.
Water Sizing Calculator:
Sizing water systems becomes a much simpler task with the use of this handy slide-rule style calculator.
Natural Gas Pipe Sizing Calculator:
This Natural Gas Pipe Sizing Calculator is presented in an easy to use and read slide-rule format.
Designed for systems with a supply pressure of six to eight inches of water column, all pipe capacities
are given in cubic feet per hour.
Trailer Standards:
lAPMO has developed a number of standards for specialty products used in manxxfactured homes and
recreational vehicles. These standards are available individually or they may be purchased as a set.
Directory of Listed Plumbing Products:
The lAPMO Listing Program was primarily created to benefit the building and plumbing officials that
the products installed meet the appropriate standards and code. For a product to continue to be listed,
tmannounced inspections of the manufacturing facilities verify continued compliance. This directory
contains information on several thousand lAPMO-Usted plumbing products and is updated aimuaUy.
ICES-IAPIVIO Certification Evaluation Services:
An independent, third party Certification system for jurisdictions to adopt and for individuals to take
standardized, validated exams for over 100 different construction trade categories for Code Admini-
strators, Inspectors, Plan Reviewers, Contractor and Journey level tradesmen, all based upon com-
monly utilized model codes. Custom certification and licensing exam creation to meet any jtirisdictions
special needs is available.
Education and Training Seminars:
lAPMO specializes in conducting training and education, including fulfilling continuing education
requirements, on the UPC and UMC as well as all of the most commonly utilized codes in the Construc-
tion Trades. Special seminars on industry or code subjects are expeditiously created and delivered upon
request. Please call to obtain the seminar schedxile or to arrange for a custom special seminar.
RELATED PUBLICATIONS AND SERVICES
The Documents Listed are Not by this Reference Adopted by The State of California.
Backflow Prevention Institute - iAPiVIO
The lAPMO Backflow Prevention Institute provides professional education and training for die control
of hazards to our water supply and is dedicated to water-system safety worldwide. Tlie Institute pro-
vides training in backflow prevention and cross-connection control. Tliis program includes backflow
preventers, testers, repairers, and cross-coraiection control surveyors. Each of these courses provides
compliance certification to American National Standards Institute standards.
Baclcflow Prevention Reference iVlanual:
This unique 300-page maiiual contains full-color illustrations and sections relating to real-world instal-
lations, backflow prevention, testing cross-connection control, repair and inspections. The manual is aii
excellent textbook and a reference the inspectors in every jurisdiction should have access too. It is also
an important resource for system designers, urban planners and utility companies - professionals on
botli sides of tlie water meter.
Drinlcing Water & Backflow Prevention lUlagazine:
A monthly subscription to Drinking Water & Backflow Prevention Magazine provides current and
valuable information regarding this critical public health topic. Subjects range from actual incident
reporting, application of tlie newest teclmology, and general interest articles including fire systems, irri-
gation systems, and security as well as installation, inspection and repair tips.
Backflow Prevention Tech-Wheel:
Find q-uick answers to your backflow questions! The Backflow Tech-Wheel contains a wealth of infor-
mation in a grapliic, quick reference format. One side delivers solutions to device application questions;
the otlier a troubleshooting guide offering solutions to backflow problems.
ANSI Z 124 Standards:
These standards are written to specifically address a variety of plastic plumbing fixtures and compo-
nents. They are available individually, or may be grouped for quantity discounts.
lAPMO Installation Standards:
lAPMO standards committees have formulated installation standards for a wide variety of commonly
used plumbing materials and systems. The lAPMO installation standards are included after the text of
the Uniform Plumbing Code, or can be purchased separately.
Material and Property Standards:
LAPMO does not generally develop material and property standards, but when a need exists the
Association will take a leadership role by fUUng tlie void. Tliey are available, are subject to amendments
and are withdrawn wheii recognized consensus standards are formulated.
OFFICIAL Magazine:
lAPMO's bimontihly publication features informative articles related to Plumbing and Meclianical
HVACR installations, award winning general interest features, teclinical columns and industiy
updates. Subscriptions are available and all LAPMO members receive a free copy of every issue!
Membership in lAPMO:
lAPMO membership is open to all interested persons. Membership categories include Student,
Individual, Corporate and Jmisdictional. Member benefits include discounted prices on most LAPMO
publications, a subscription to Official magazine, and numerous educational and training opportunities.
HOW TOi:ONmCT lAPMO^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^ ^^ = —
Mailing Address: 5001 East Philadelphia Street, Ontario, California 91761-2816
Main Number: 909-472-4100 • Publication Orders: 800-85-L\PMO • Publication Fax: 877-85-CODES
Website: www.iapmo.org • Office Hours: Monday - Friday, Sam - 5pm Pacific Time
XI
MATRIX ADOPTION TABLES 2007 CALIFORNIA PLUMBING CODE
CALIFORNIA MATRIX ADOPTION TABLES
Format of the Matrix Adoption Tables
The matrix adoption tables, which follow, show the user which state agencies have adopt-
ed and /or amended given sections of model code for applications within their respective
authorities. See Chapter 1, See Section 102 through 114, for building application and enforce-
ment responsibilities.
The side headings identify the scope of the state agencies' adoption as follows:
Adopt the Entire UPC Chapter without state amendments
If there is an "X" tinder a particular state agency's acronjon on tliis row, this means that partic-
tilar state agency has adopted the entire model code chapter without any state amendments.
Example:
CHAPTER 1 - GENERAL
Adopting Agency
Adopt Entire Chapter
Adopt Entire Ctiapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
Article / Section
101
102
Codes
CA
CA
Adopt the Entire UPC chapter as amended (amendments listed below)
If there is an "X" imder a particular state agency's acronym on this row, it means that partic-
ular state agency has adopted the entire model code chapter, with state amendments.
Each state-amended section that the agency has added to that particular chapter is listed.
There will be an "X" in the column, by that particular section, under the agency's acronym, as weU
as an "X" by each section that the agency has adopted.
Example:
CHAPTER 1 ■ GENERAL
Adopting Agency
Adopt Entire Chapter
Adopt Entire Chapter as
amended (amended
sections listed below)
Adopt only those sections
that are listed below
XII
2007 CALIFORNIA PLUiVlBING CODE
MATRIX ADOPTION TABLES
Adopts only those section which are listed below:
If there is an "X" under a particular state agency's acronym on this row, it means tliat particu-
lar state agency is adopting only specific model code or state-amended sections within this chap-
ter. There will be an "X" iiT the column under the agency's acronym/ as well as an "X" by each sec-
tion that tlie agency has adopted.
Example:
CHAPTER 1 -
3ENERAL CODE PROVIS
ONS
Adopting Agency
BSC
SFM
HOD
DSA
OSHPD
DHS
1
2
A
C
S
s
1
2
3
4
Adopt Entire Cliapter ^i^'"*^
I ■ ' i
1 '
H
"1
i 1
■Ml
k i
i^
Bn
i
Adopt Entire CliapteraslnJ^ g\ 1% #1 i— JP 1 iuiJi
amended (amended ll^J #""% 1 1# 1 |^ 1 1 f
sections listed below) ^%ii«i'^ * m 1 'ff fi 1^ I|ihiii iiiin|i
Adoptoniy those sections
that are listed below
X
Article / Section
Codes
101
CA
X
102
CA
X
■
Legend of Abbreviations of Adopting State Agencies
BSC California Building Standards Commission
SFM Office of the State Fire Marshal
HCD Department of Housing and Community Development
DSA- AC Division of the State Architect - Access Compliance
DSA - SS Division of liie State Architect - Structural Safety
OSHPD Office of Statewide Health Planning and Development
AGR Department of Food and Agriculture
CA Department of Consumer Affairs
CSA Corrections Standards Authority
DHS Department of Health Services
DWR Department of Water Resottrces
XIII
MATRIX ADOPTION TABLES
2007 CALIFORNIA PLUMBING CODE
CALIFORN
AC
^APTER 1
-GE
NERi
M. CODE PROVISIONS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3 ,
4
Adopt Entire Chapter
Adopt Entire Chapter as amended
(amended sections listed beiow)
Adopt only those sections that are listed
below
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Article/Section
Codes
101
CA
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
102
CA
X
103
CA
X
104
CA
X
106
107
CA
JL
— =
X
CA
108
CA
X
X
X
109.1
CA
X
109.2
CA
X
110.1
CA
X
110.2
CA
X
110.3
CA
X
110.4
CA
X
111
CA
X
113
CA
X
CHA
PIER
2 - DEFIN
ITIONS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
i;ac
AC
SS
1
2
3
4
Adopt Entire Chapter
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
x'
x'
X^
X
X
X
X
Adopt only those sections that are listed
below
X
X
Article/Section
Codes
203.0
CA
X
X
X
204.0
CA
X
X
X
205.0
CA
X
X
X
X
206.0
CA
X
X
X
207.0
CA
X
X
X
208.0
CA
X
210.0
CA
X
X
X
X
X
X
X
214.0
CA
X
X
X
216.0
CA
X
X
X
221
CA
X
X
X
X
221.0 Single Family
Dwelling
CA
t
t
t
222.0
CA
X
X
X
X
X
X
X
223.0
CA
X
X
X
X
X
X
X
X
X
225.0
CA
X
X
X
1 . This state agency adopts the entire chapter as amended except for those sections indicated by the following symbol: t
XIV
2007 CALIFORNIA PLUMBING CODE
MATRIX ADOPTION TABLES
CHAPTER 3 -GENERAL
PROVISIONS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3
4
Adopt Entire Ciiapter
X
X
Adopt Entire Ctiapter as amended
(amended sections listed below)
X^
x^
X
X
X
X
Adopt only those sections that are listed
below
X
Article/Section
Codes
301.2
UPC
X
X
301.2.1
UPC
t
t
■
301.2.1.1
UPC
t
t
301.2.1.2
UPC
t
t
301.5
CA
X
X
303.0 Exc.
CA
X
X
304.0 Exc.
CA
X
X
311.9
CA
X
X
X
X
311.10
CA
X
X
X
311.11
CA
X
311.12
CA
X
X
X
316.1.6
UPC
X
X
316.1.8
CA
X
X
X
X
316.1.9
CA
X
X
X
X
X
316.2.4
CA
X
X
X
X
X
X
320.0
CA
X
X
X
X
1 . This state agency adopts the entire chapter as amended except for those sections indicated by the following symbol: t
XV
MATRIX ADOPTION TABLES
2007 CALIFORNIA PLUMBING CODE
CHAPTER 4
- PLUMB
NG FIXTURES AND FIX-
rURE FITTINGS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
Adopt Entire Cliapter as amended
(amended sections listed below)
X
X^
x^
X
X^
x^
x^
x^
X
Adopt only those sections that are listed
below
X
X
X
X
X
Article/Section
Codes
Note Under Title
CA
X
402.1
UPC
X
X
402.2
UPC
t
t
t
t
402.3
UPC
t
t
t
t
406.5
CA
X
X
X
X
X
X
X
X
X
X
=-=
X
406.5.1
CA
407.7
UPC
X
X
410.4
UPC
X
X
410.5
UPC
X
X
411.6 Exc.
UPC
X
X
X
=^
. — .
411.7 Exc. 3
CA
412.0
CA
X
X
X
X
412.1
CA
X
X
X
X
X
X
412.1.1
CA^
X
412.3
UPC
t
t
412.3.1
CA
X
X
X
X
412.5
UPC
t
t
t
t
412.5.1
UPC
412.5.2
UPC
412.5.3
UPC
412.6
UPC
t
t
t
t
412.6.1
CA
X
412.7
UPC
t
t
t
t
t
t
412.8
CA
X
412.9
412.10
CA
CA
^
X
^
413.0
CA
X
X
X
Table 4-1
CA
X
X
X
X
X
X
X
X
X
X
Table4-1 Footnote 19
CA
X
X
X
X
X
X
X
X
X
Table 4-2
CA
X
X
X
X
Table 4-3
CA
X
X
Table 4-4
CA
X
1 . This state agency adopts the entire chapter as amended except for those sections indicated by the following symbol: t
CH
AFTER 5
-WATER
HEATERS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3
4
Adopt Entire Chapter
X
X
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
X^
X^
X^
Adopt only those sections that are listed
below
Article/Section
Codes
508.2
UPC
t
t
t
508.2.1
CA
X
X
X
1 . This state agency adopts the entire chapter as amended except for those sections indicated by the following symbol: t
XVI
2007 CALIFORNIA PLUMBING CODE
MATRIX ADOPTION TABLES
CHAPTER 6-
WATER SUPPLY ANP DISTRIBUTION
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
ASR
CA
CSA
DHS
DWR
1
2
1/AO
AC
ss
1
2
3
4
Adopt Entire Chapter
Adopt Entire Cliapter as amended
(amended sections listed beiow)
X''
x'
x'
x'
X''
X''
x^
X''
X
Adopt only those sections that are listed
below
X
X
X
Article/Section
Codes
601.1
UPC
X
X
601.2,2
UPC
X
X
601,2.3
UPC
X
X
601.4
CA
X
X
601.5
CA
X
601.5.1
CA
X
601.5.2
CA
X
601.5.3
CA
X
601.5
CA
X
601.7
CA
X
601.8
CA
X
601.9
CA
X
603.4.11
UPC
X
X
Figure 6-1
CA
X
X
603.4.16
UPC
t
t
603.4.16 Note .
CA
X
603,4.16.1
UPC
t
603.4.16.2
UPC
t
603.4.16.3
UPC
t
503.4.16.4
UPC
t
603.4.16.5
UPC
t
604.1 Exc. 1
CA
X
X
X
X
604.1 Exc. 2
CA
X
X
X
X
604.1 Exc. 3
CA
X
X
X
X
604.1 Exc. 4
CA
X
X
504.1.1
CA
X
X
604.10
CA
X
X
X
X
X
X
X
X
Table 6-4 Footnote 1
CA
X
X
X
X
604.11
CA
t
t
t
t
t
604.11.1
, CA
t
t
t
t
t
604.11.2
CA
t
t
t
t
t
604,13
CA
X
X
604.13.1
CA
X
X
604,13.2
CA
X
X
505.8
CA
X
X
X
606.2.4.1
CA
X
X
X
X
609.9
CA
X
X
X
X
609.10
UPC
t
t
609.11
CA
X
X
X
Table 6-5
CA
X
X
512.0
CA
X
X
X
X
613.0
CA
X
X
X
X
514.0
CA
X
X
X
X
mArr-'---
:---::: :;J^A
r-_,--„-
-:-.:
— -
---
X
X
X
X
—
^■_^._-_-
—
614.2
CA
X
X
X
X
614.3
• CA
X
X
X
X
614.4
CA
X
1. This state agency adopts the entire chapter as amended except for those sections indicated by the following symbol: t
XVII
MATRIX ADOPTION TABLES
2007 CALIFORNIA PLUMBING CODE
CHAPTER 7 - SANITARY DRAINAGE
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Ctiapter
X
X
Adopt Entire Ctiapter as amended
(amended sections listed beiow)
X
X
X
X
X
X
X
Adopt only tfiose sections tliat are listed
below
Article/Section
Codes
701.1.2.1
CA
X
X
X
X
701.1.2.2
CA
X
X
701.12.1
CA
X
X
Table 7-3
UPC
X
X
705.1.1.1
CA
X
X
X
X
705.1.7 Exc.
CA
X
X
705.1.9 Exc.
CA
X
X
705.2.5
CA
X
X
X
X
X
X
710.3.3.1
CA
X
X
717.1
CA
X
724.0
CA
X
725.0
CA
X
726.0
CA
X
727.0
CA
X
CHAPTER 8-
INDI
RECT WASTES
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
i;ac
AC
SS
1
2
3
4
Adopt Entire Chapter
X
X
X
X
X
X
X
X
Adopt Entire Ctiapter as amended
(amended sections listed below)
Adopt only those sections that are listed
below
Article/Section
Codes
CA
1
CHAPTERS
-VENTS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
X
X
X
X
X
X
Adopt only those sections that are listed
below
Article/Section
Codes
903.1.2.1
CA
X
X
X
X
903.1.3
CA
X
X
903.3.1
CA
X
X
906.2.1
CA
X
X
X
X
XVIII
2007 CALIFORNIA PLUMBING CODE
MATRIX ADOPTION TABLES
CHAPTER 10-
TRAPS AND INTERCEPTORS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
GSA
DHS
DWR
1
2
VAC
AC
SS
1
2
3
4
Adopt Entire Cliapter
X
X
X
X
Adopt Entire Cliapter as amended
(amended sections listed below)
X
X
X
X
X
Adopt only those sections tiiat are listed
below
Article/Section
Codes
1010.1
CA
X
1010.2
CA
X
1010.3
CA
X
1010.4
CA
X
1014.1A
CA
X
X
X
X
1014.1B
CA
X
X
X
X
1 014.1 C
CA
X
X
X
X
1015.6
CA
X
X
X
X
1015.7
CA
X
X
X
X
CHA
PTER11-
STORM DRAINAGE
Adopting Agency
BSC
SFM
HOD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
X
X
X
X
X
X
Adopt only those sections that are listed
below
Art'cle/Seoti'on
Codes
1101.3
CA
X
X
1101.3.1
CA
X
X
X
X
1101.5.1 Exc.
CA
X
X
1102.1.2
CA
X
X
X
X
X
X
c
HAPTER12-FUELPIPI
NG
Adopting Agency
BSC
SFM
HOD
DSA
OSHPD
AGR
CA
GSA
DHS
DWR
1
2
VAC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
X
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
X
X
Adopt only those sections that are listed
below
Article/Section
Codes
1203.10
CA
X
1211.13.5
CA
X
1211.16
X
1211.18
CA
X
CHAPTER 13 - HEALTH CARE FACILITIES AND MEDICAL GAS AND
VACUUM SYSTEMS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
. — ^
1
2
VAC
AC
SS
1
2
3
4
J
Adopt Entire Chapter
X
X
Adopt Entire Chapter as amended
- (amended-sections listed below)
X
X
X
X
Adopt only those sections that are listed ""
below
. _
'"
-^"- -" " - - :- . — — --
Article/Section
Codes
-X
1301.2
CA
X
X
X
X
XIX
MATRIX ADOPTION TABLES
2007 CALIFORNIA PLUMBING CODE
CHAPTER 14- MANDATORY REFERENCED STANDARDS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3
4
Adopt Entire Chapter
X
X
X
X
Adopt Entire Chapter as amended
(amended sections iisted below)
X
X
X
X
X
Adopt only those sections that are listed
below
Article/Section
Codes
Table 14-1
CA
X
X
X
X
X
CHAPTER 1 5 - FIRESTOP PROTECTION
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
OSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
Adopt only those sections that are listed
below
Article/Section
Codes
APPENDIX CHAPTER 1 - ADMINISTRATION
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3
4
Adopt Entire Chapter
Adopt Entire Chapter as amended
(amended sections listed below)
X
X
X
X
Adopt only those sections that are listed
below
X
X
Article/Section
Codes
101.4.1.4
CA
X
X
X
X
103.1.2.1
UPC
X
X
103.1.2.2
UPC
X
X
APPENDIX A- RECOMMENDED RULES FOF
I SIZING THE WATER SUPPLY SYSTEM
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
X
X
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
Adopt only those sections that are listed
below
Article/Section
Codes
APPENDIX B - EXPLANATORY NOTES ON COWIBINATI
ON WASTE AND VENT SYSTEMS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
ss
1
2
3
4
Adopt Entire Chapter
X
X
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
Adopt only those sections that are listed
below
Article/Section
Codes
XX
2007 CALIFORNIA PLUMBING CODE
MATRIX ADOPTION TABLES
APPENDIX D
- SIZING STORMWATER DRAINAGE SYSTEMS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPP
AGR
CA
CSA
DHS
DWR
1
2
1/AO
AC
SS
1
2
3
4
Adopt Entire Cliapter
X
X
X
X
X
X
X
X
Adopt Entire Cliapter as amended
(amended sections iisted beiow)
Adopt oniy those sections \M are iisted
beiow
Articie/Section
Codes
APPEND
fXG-
- GRAY WATER STANDARDS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AC
AC
SS
1
2
3
4
Adopt Entire Cliapter
X
Adopt Entire Ctiapter as amended
(amended sections iisted beiow)
Adopt only tiiose sections tiiat are listed
beiow
Articie/Section
Codes
APPENDIX 1- IN
STA
LLATION
STA^
DAF
IDS-
FABLE OF CO
NTE
MTS
Adopting Agency
BSC
SFM
HCD
DSA
OSHPD
AGR
CA
CSA
DHS
DWR
1
2
1/AG
AC
SS
1
2
3
4
Adopt Entire Chapter
X
X
X
X
Adopt Entire Chapter as amended
(amended sections listed below)
X
X
Adopt only those sections that are listed
below
Article/Section
Codes
1.2
CA
X
X
1.2.1
CA
X
X
1.2.2
CA
X
X
Adopting Agency
Adopt Entire Chapter
APPENDIX K- PRIVATE SEWAGE DISPOSAL SYSTEMS
Adopt Entire Chapter as amended
(amended sections listed below)
Adopt only those sections that are listed
below
Article/Section
Codes
BSC
SFM
HCD
SS
OSHPD
AGR CA CSA DHS DWR
XXI
MATRIX ADOPTION TABLES 2007 CALIFORNIA PLUMBING CODE
XXII
CALIFORNIA CHAPTER 1
GENERAL CODE PROVISIONS
101.0 General.
101.1 Title.
These regulations shall be known as the California
Plumbing Code, may be cited as such and will be referred
to herein as "this code." The California Plumbing Code is
Part 5 of twelve parts of the official compilation and
publication of the adoptions, amendment, and repeal of
Plumbing regulations to the California Code of
Regulations, Title 24, also referred to as the California
Building Standards Code. This part incorporates by
adoption the 2006 Uniform Plumbing Code of the
International Association of Plumbing and Mechanical
Officials with necessary California amendments.
101.2 Purpose.
The purpose of this code is to establish the minimum
requirements to safeguard the public health, safety and
general welfare through structural strength, means of
egress facilities, stability, access to persons with
disabilities, sanitation, adequate lighting and ventilation,
and energy conservation; to preserve life and property
from fire and other hazards attributed to the built
environment; and to provide safety to fire fighters and
emergency responders during emergency operations.
101.3 Scope.
The provisions of this code shall apply to the construction,
alteration, movement, enlargement, replacement, repair,
equipment, use and occupancy, location, maintenance,
removal and demolition of every building or structure or
any appurtenances connected or attached to such building
structures throughout the State of California.
101.3.1 Non-State-Regulated Buildings,
Structures, and Applications. The provisions in
Chapters 2 through 16 of the 2006 Uniform
Plumbing Code of the International Association of
Plumbing and Mechanical Officials contained or
referenced in this code shall apply to all occupancies
and applications not regulated by a state agency.
101.3.2 State-Regulated Buildings, Structures,
and Applications. The model code provisions,
amendments to the model code provisions and/or
provisions where there are no relevant model code
provisions, shall apply to the following buildings,
structures, and applications regulated by state
-^.^--jigencies as referenced in the Matrix Adoption Tables
and as specified in section 102' tlifouglillB. When
adopted by a state agency, the provisions of this code
shall be enforced by the appropriate enforcing agency,
but only to the extent of authority granted to such
agency by the State Legislature.
Note: See Legend to distinguish the model code
provisions from the California provisions.
1. State-owned buildings, including buildings
constructed by the Trustees of the California
State University, and to the extent permitted by
California laws, buildings designed and
constructed by the Regents of the University of
California, arid regulated by the Building
Standards Commission. See section 102 for
additional scope provisions.
2. Local detention facilities regulated by the
Corrections Standards Authority. See section
103 for additional scope provisions.
3. Barbering, cosmetology or electrolysis establish-
ments, acupuncture offices, pharmacies, veteiinary
facilities, and structural pest control locations
regulated by the Department of Consumer Affairs.
See section 104 for additional scope provisions.
4. Reserved for the California Energy Commission.
See section 105 for additional scope provisions.
5. Dairies and places of meat inspection, regulated
by the Department of Food and Agriculture. See
section 106 for additional scope provisions.
6. Organized camps, laboratory animal quarters,
public swimming pools, radiation protection,
commissaries serving mobile food preparation
vehicles, and wild animal quarantine facilities
regulated by the Department of Health Service.
See section 107 for additional scope provisions.
7. Hotel, motels, lodging houses, apartment houses,
dwellings, dormitories, condominiums, shelters for
homeless persons, congi-egate residences, employee
housing, factory-built housing, and other types of
dwellings containing sleeping accommodations
with common toilets or cooking facilities. See
section 108 for additional scope provisions.
8. Accommodations for persons with disabilities in
buildings containing newly constructed covered
multifamily dwellings, additions to existing
buildings where the addition alone meets the
definition of a covered multifamily dwelling, and
common-use spaces serving covered multifamily
dwellings which are regulated by Department of
Housing and Community Development. See
section 108 for additional scope provisions.
-_9, _::__Permanent _ buildings and perm a nent accessory -
buildings or structures constructed within,
mobilehome parks and special occupancy parks
regulated by the Department of Housing and
Community Development. See section 108 for
additional scope provisions.
101.3-101.8
2007 CALIFORNIA PLUMBING CODE
10. Accommodations for persons with disabilities
regulated by the Division of the State Architect.
See Section 109.1 for additional scope provisions.
11. Public elementary and secondary schools,
community college buildings, and state-mmed or
state-leased essential service buildings regulated
by the Division of the State Architect. See
Section 109.2 for additional scope provisions.
12. Reserved for the State Historical Building Safety
Board with the Division of the State Architect.
See Section 109.3 for additional scape additional
scope provisions.
13. General acute care hospitals, acute psychiatric
hospitals, skilled nursing and/or intermediate
care facilities, clinics licensed by the Department
of Health Services, and correctional treatment
centers regulated by the Office of Statewide
Health Planning and Development. See Section
110 for additional scope provisions.
14. Applications regulated by the Office of State Fire
Marshal include but are not limited to following
in accordance with Section 111:
1. Buildings or structures used or intended for
use as an:
1.1 Asylum, jail
1.2 Mental hospital, hospital, home for the
elderly, children's nursery, children's home
or institution school or any similar
occupancy of any capacity
1.3. Theater, dancehall, skating rink,
auditorium, assembly hall, meeting hall,
nightclub, fair building, or similar place of
assemblage where 50 or more persons may
gather together in a building, room or
structure for the purpose of amusement,
entertainment, instruction, deliberation,
ivorship, drinking or dining, atvaiting
transportation, or education
1.4. Small family day care homes, large
family day-care homes, residential facilities
and residential facilities for the elderly,
residential care facilities
1.5. State institutions or other state-owned
or state-occupied buildings
1.6. High rise structures
1.7. Motion picture production studios
1.8. Organized camps
1.9. Residential structures
2. Tents, awnings or other fabric enclosures
used in connection with any occupancy
3. Fire alarm devices, equipment and systems
in connection luith any occupancy
4. Hazardous materials, flammable and
combustible liquids
5. Public school automatic fire detection,
alarm, and sprinkler systems
6. Wildland urban interface fire areas
15. Reserved for the State Librarian. See Section
112 for additional scope provisions.
16. Graywater systems regulated by the Department
of Water Resources. See Section 113 for
additional scope provisions.
17. Reserved for the State Lands Commission. See
Section 114 for additional scope provisions.
101.4 Appendices. Provisions contained in the
appendices of this code shall not apply unless specifically
adopted by a state agency or adopted by a local enforcing
agency in compliance with Health and Safety Code
Section 18938 (b)for Building Standards Law, Health and
Safety Code Section 17950 for State Housing Law and
Health and Safety Code Section 13869 J for Fire
Protection Districts. See Section 101.8 of this code.
101.5 Referenced Codes. The codes, standards and
publications adopted and set forth in this code, including
other codes, standards and publications referred to therein
are, by title and date of publication, hereby adopted as
standard reference documents of this code. When this code
does not specifically cover any subject related to building
design and construction, recognized architectural or
engineering practices shall be employed. The National Fire
Codes and the Fire Protection Handbook of the National
Fire Protection Association are permitted to be used as
authoritative guides in determining recognized fire-
prevention engineering practices.
101.6 Non-Building Standards, Orders and Regidations.
Requirements contained in the Uniform Plumbing Code,
or in any other referenced standard, code or document,
which are not building standards as defined in Section
18909, Health and Safety Code, shall not be construed as
part of the provisions of this code. For non-building
standards, orders, and regulations, see other titles of the
California Code of Regulations.
101.7 Order of Precedence and Use.
101.7.1 Differences. In the event of any differences
between these building standards and the standard
reference documents, the text of these building
standards shall govern.
101.7.2 Specific provision. Where a specific
provision varies from a general provision, the specific
provisions shall apply.
101.7.3 Conflicts. When the requirements of this
code conflict with the requirements of any other part
of the California Building Standards Code, Title 24,
the most restrictive requirement shall prevail.
101.8 City, County, or City and County Amend-
ments, Additions or Deletions. The provisions of this
code do not limit the authority of city, county, or city and
county governments to establish more restrictive and
reasonably necessary differences to the provisions
contained in this code pursuant to complying with Section
101.8.1. The effective date of amendments, additions, or
deletions to this code of cities, counties, or city and
ADMINISTRATION
101.8-102.1
counties filed pursuant to Section 101.8.1 shall be the date
filed. However, in no case shall the amendments,
additions or deletions to this code be effective any sooner
than the effective date of this code.
101.8.1 Findings and Filings.
1. The city, county, or city and county shall make
express findings for each amendment, addition or
deletion based upon climatic, topographical, or
geological conditions.
Exception: Hazardous building ordinances and
programs mitigating unreinforced masonry
buildings.
2. The city, county, or city and county shall file the
amendments, additions, or deletions expressly
marked and identified as to the applicable
findings. Cities, counties, cities and counties,
and fire departments shall file the amendments,
additions or deletions, and the findings with the
California Building Standards Commission at
2525 Natomas Park Prive, Suite 130,
Sacramento, CA 95833.
3. Findings prepared by fire protection districts
shall be ratified by the local city, county, or city
and county and filed with the California
Department of Housing and Community
Development at 1800 3rd Street, Room 260,
Sacramento, CA 95814.
101.9 Effective Date of ttiis Code. Only those
standards approved by the California Building Standards
Commission that are effective at the time an application
for building permit is submitted shall apply to the plans
and specifications for, and to the construction performed
under, that permit. For the effective dates of the
provisions contained in this code, see the History Note
page of this code.
101.10 Avaiiabiiity of Codes. At least one entire copy
each of Titles 8, 19, 20, 24, and 25 with all revisions shall be
maintained in the office of the building official responsible
for the administration and enforcement of this code. See
Health and Safety Code Section 18942 (d)(1) & (2).
101.11 Format. This part fundamentally adopts the
Uniform Plumbing Code by reference on a chapter-by-
chapter basis. Such adoption is refiected in the Matrix
adoption table of each chapter of this part. Wlien the Matrix
adoption tables make no reference to a specific chapter of the
Uniform Plumbing Code, such chapter of the Uniform
Plumbing Code is not adopted as a portion of this code.
101.12 Validity. If any chapter, section, subsection,
sentence/ clause or phrase of this code is for any reason
held to he unconstitutional, contrary to statute, exceeding
the authority of the state as stipulated by statutes, or
-otherwise-inoperativersuch-decision-shall not affect the--
validity of the remaining portion of this code.
102.0 Building Standards Commission
102.1 Specific scope of application of the agency
responsible for enforcement, the enforcement agency, and
the specific authority to adopt and enforce such provisions
of this code, unless otherwise stated.
1. State Buildings for all occupancies.
Application - State buildings (all occupancies),
including buildings constructed by the Trustees of
the California State University and the Regents of the
University of California where no state agency has
the authority to adopt building standards applicable
to such buildings.
Enforcing Agency - State or local agency specified
by the applicable provisions of law.
Authority Cited - Health and Safety Code section
18934.5.
Reference - Health and Safety Code, Division 13,
Part 2.5, commencing with section 18901.
2. University of California, California State
Universities, and California Community
Colleges.
Application - Standards for lighting for parking
lots and primary campus walkways at the University
of California, California State Universities, and
California Community Colleges.
Enforcing Agency - State or local agency specified
by the applicable provisions of law.
Authority Cited - Government Code section 14617.
Reference - Government Code section 14617,
3. Existing State-Owned Buildings, including
those owned by the University of California
and by the California State University
Application - Building seismic retrofit standards
including abating falling hazards of structural and
nonstructural components and strengthening of
building structures. See also Division of the State
Architect.
Enforcing Agency - State or local agency specified
by the applicable provisions of law.
Authority Cited - Government Code section 16600
Reference - Government Code sections 16600
through 16604
4. Unreinforced Masonry Bearing Wall
Buildings.
Application - Minimum seismic strengthening
standards for buildings specified in Appendix
Chapter 1 of the California Code for Building
Conseivation, except for buildings subject to building
standards adopted pursuant to Part 1.5 (commencing
with Section 17910)
Enforcing Agency - State or local ,agency___
specifiM'by'tlTe^plicaMPjnmisidm
Authority Cited -Health and Safety Code section
18934.6
Reference - Health and Safety Code sections
18901 through 18949
103.0-108.2
2007 CALIFORNIA PLUMBING CODE
103.0 Corrections Standards Authority.
103.1 Specific scope of application of the agency
responsible for enforcement, the enforcement agency, and
the specific authority to adopt and enforce such provisions
of this code, unless otherwise stated.
Application - Local detention facilities.
Enforcing Agency - Corrections Standards
Authority.
Authority Cited - Penal Code sectionn 6030;
Welfare and Institutions Code sections 210 and 885.
reference - Penal Code section 6030; Welfare and
Institutions Code sections 210 and 885.
104.0 Department of Consumer Affairs.
104.1 Specific scope of application of the agency
responsible for enforcement, the enforcement agency, and
the specific authority to adopt and enforce such provisions
of this code, unless othenuise stated.
Board of Bartering and Cosmetology.
Application - Any establishment or mobile unit
where barbering, cosmetology, or electrolysis is being
performed.
Enforcing Agency - State or local agency specified
by applicable provisions of law.
Authority Cited - Business and Professions Code
section 7312.
Reference - Business and Professions Code sections
7303, 7303.1, 7312, and 7313.
105.0 Reserved for California Energy Commission.
106.0 Department of Food and Agriculture.
106.1 Specific scope of application of the agency
responsible for enforcement, the enforcement agency, and
the specific authority to adopt and enforce such provisions
of this code, unless otherwise stated.
Application - Dairies and places of meat and
poidtry inspection.
Enforcing Agency - Department of Food and
Agriculture.
Authority Cited - Food and Agricultural Code
Sections 18735, 18960, 19384, 33481, and 33731.
Reference - Food and Agricidtural Code Sections
18735, 18960, 19384, 33481, and 33731.
107.0 Department of Health Services.
107.1 Specific scope of application of the agency
responsible for enforcement, the enforcement agency, and
the specific authority to adopt and enforce such provisions
of this code, unless otherwise stated.
Department of Health Services.
Application - Commissaries serving mobile food
preparation units, food establishments, and organized
camps.
Enforcing Agency - Department of Health Services
and local health agency.
Authority Cited - Health and Safety Code sections
18897.2, 100275, 110065, and 113710.
Reference - Health and Safety Code sections 18897.2,
18897.4, 18897.7, 100275, 110065, 113705, and
113710.
108.0 Department of Housing and Community
Development (HCD)
108.1 Purpose. The purpose of this code is to establish
minimum standards to protect, the health, safety, and
general welfare of the occupant and the public by
governing the erection, construction, reconstruction,
enlargement, conversion, alteration, repair, moving,
removal, demolition, sanitation, ventilation and
maintenance or use of plumbing equipment or systems.
108.2 Authority and Abbreviations
108.2. 1 General. The Department of Housing and
Community Development is authorized by law to
promulgate and adopt building standards and
regidations for several types of building applications.
These applications are grouped and identified by
abbreviation in the Matrix Adoption Tables to show
which model code sections and amendments are
applicable to each application. The applications under
the authority of the Department of Housing and
Community Development are listed in Sections
108.2.1.1 through 108.2.1.3.
108.2.1.1 Housing Construction.
Application - Hotels, motels, lodging houses,
apartment houses, dwellings, dormitories,
condominiums, shelters for homeless persons,
congregate residences, employee housing,
factory-built housing and other types of
dwellings containing sleeping accommodations
with or luithout common toilet or cooking
facilities including accessory buildings, facilities,
and uses thereto. Sections of this code which
pertain to applications listed in this section are
identified in the Matrix Adoption Table using
the abbreviation "HCD 1".
Enforcing Agency — Local building department
or the Department of Housing and Community
Development.
Authority Cited: Health and Safety Code
Sections 17921, 17922, 19990 through 19992,
and Government Code Section 12955.1.
Reference: Health and Safety Code Sections
17000 through 17062.5, 17910 through 17995.5,
18200 through 18700, 18860 through 18874,
and 19960 through 19997, and Government
Code Section 12955.1.
108.2.1.2 Housing Accessibility.
ADMINISTRATION
108.2-108.3
Application- Covered muliifmnily dwelling units
as defined in Chapter 11 A of the California Code
of Regulations, Title 24, Part 2, also known as
the California Building Code (CBC) including
but not limited to lodging houses, dormitories,
time-shares, condominiums, shelters for homeless
persons, congregate residences, apartment
houses, dwellings, employee housing, factory-
built housing and other types of dwellings
containing sleeping accommodations with or
without common toilet or cooking facilities.
Sections of this code identified in the
Matrix Adoption Table by the abbreviation
"HCD 11 AC" require specific accommodations
for persons with physical disabilities, as defined
in Chapter llA of the CBC. The application of
such provisions shall be in conjunction with
other requirements of this code and apply only to
Group R Occupancies which are newly-
constructed covered multifamily dwellings as
defined in Chapter 11 A of the CBC. "HCD
11 AC" applications include, but are not limited
to, the following:
1. All newly-constructed covered
multifamily dwellings as defined in
Chapter llA of the CBC.
2.
3.
Neiv common use areas as defined in
Chapter llA of the CBC serving
existing covered multifamily dwellings.
Additions to existing buildings, where
the addition alone meets the- definition
of a covered multifamily dwelling as
defined in Chapter 11 A of the CBC.
4. Common-rUse areas serving covered
multifamily dwellings.
HCD lA/C building standards generally do not
apply to public use areas or public accommo-
dations such as hotels and motels. Public use
areas, public accommodations, and housing
which is publicly funded as defined in Chapter 2,
Chapter llA, and Chapter UB of the CBC, are
subject to the Division of the State Architect
(DSA/AC) and are referenced in Section 109.1.
Enforcing Agency — Local building department
or the Department of Housing and Community
Development.
Authority Cited: Health and Safety Code
Sections 17921, 17922, 19990 through 19992,
and Government Code Section 12955.1.
Reference: Health and Safety Code Sectidns"
17000 through 17062.5, 17910 through 17995.5,
18200 through 18700, 18860 through 18874,
and 19960 through 19997, and Government
Code Section 12955.1.
108.2.1.3 Permanent Buildings in
l\^obiieliome Paries and Special
Occupancy Parks. Application - Permanent
buildings, and permanent accessory buildings or
structures, constructed within mobilehonie parks
and special occupancy parks that are under the
control and ownership of the park operator.
Sections of this code which pertain to applications
listed in this section are identified in the Matrix
Adoption Table using the abbreviation "HCD 2".
Enforcing Agency — Local building department
or other local agency responsible for the
enforcement of Health and Safety Code Division
13, Part 2.1 and Part 2.3, commencing with
Sections 18200 and 18860 respectively, or the
Department of Housing and Community
Development.
Authority Cited: Health and Safety Code
Sections 17921, 17922, 18300 and 18865.
Reference: Health and Safety Code Sections
17000 through 17062.5, 17910 through 17995.5,
18200 through 18700, 18860 through 18874,
and 19960 through 19997, and Government
Code Section 12955.1.
108.3 Local Enforcing Agency
108.3.1 Duties and Powers. The building
department of every city, county or city and county
shall enforce all the provisions of law, this code, and the
other rules and regulations promulgated by the
Department of Housing and Community Development
pertaining to the installation, erection, construction,
reconstruction, movement, enlargement, conversion,
alteration, repair, removal, demolition, or arrangement
of apartment houses, hotels, motels, lodging houses and
dwellings, including accessory buildings, facilities, and
uses thereto.
The provisions regulating the erection and
construction of dwellings and appurtenant structures
shall not apply to existing structures as. to which
construction is commenced or approved prior to the
effective date of these regulations. Requirements
relating to use, maintenance and occupancy shall
apply to all dwellings and appurtenant structures
approved for construction or constructed before or
after the effective date of this code.
For additional information regarding the use and
occupancy of existing buildings and appurtenant
structures, see California Code of Regulations, Title
25, Division 1, Chapter 1, Subsection 1, Article 1,
commencing with Section 1.
108.3.2 Laws, Rules, and Regulations. Other
than the building standards contained in this code,
-- - a
statutory authority and location of the laws, rules,
and regulations to be enforced by local enforcing
agencies are listed by statute in Sections 108.3.2.1
through 108.3.2.5 below:
108.3-108.4
2007 CALIFORNIA PLUMBING CODE
108.3.2.1 State Housing Law. Refer to the
State Housing Law, California Health and Safety
Code, Division 13, Part 1.5 commencing with
Section 17910, and California Code of
Regulations, Title 25, Division 1, Chapter 1,
Subchapter 1, Article 1, commencing with Section
1, for the erection, construction, reconstruction,
movement, enlargement, conversion, alteration,
re:pair, removal, demolition, or arrangement of
apartment houses, hotels, motels, lodging houses
and diuellings, including accessory buildings,
facilities, and uses thereto.
108.3.2.2 Mobilehome Parks Act. Refer to
the Mobilehome Parks Act, California Health
and Safety Code, Division 13, Part 2.1,
commencing with Section 18200 and California
Code of Regulations, Title 25, Division 1,
Chapter 2, commencing luith Section 1000 for
mobilehome park administrative and enforcement
authority, permits, plans, fees, violations,
inspections and penalties both within and
outside mobilehome parks.
Exception: Mobilehome parks where the
Department of Housing and Community
Development is the enforcing agency.
108.3.2.3 Special Occupancy Parlis Act.
Refer to the Special Occupancy Parks Act,
California Health and Safety Code, Division 13,
Part 2.3, commencing with Section 18860 and
California Code of Regulations, Title 25, Division
1, Chapter 2.2, Article 1, commencing with Section
2000 for special occupancy park administrative and
enforcement authority, permits, fees, violations,
inspections and penalties both within and outside of
Special Occupancy Parks.
Exception: Special occupancy parks where the
Department of Housing and Community
Development is the enforcing agency.
108.3.2.4 Employee Housing Act. Refer to
the Employee Housing Act, California Health and
Safety Code, Division 13, Part 1, commencing
with Section 17000 and California Code of
Regulations, Title 25, Division 1, Chapter 1,
Subchapter 3, Article 1, commencing with Section
600 for employee housing administrative and
enforcement authority, permits, fees, violations,
inspections and penalties.
108.3.2.5 Factory-Built Housing. Refer to the
Factory-Built Housing Law, California Health
and Safety Code, Division 13, Part 6 commencing
with Section 19960 and California Code of
Regulations, Title 25, Division 1, Chapter 3,
Subchapter 1, Article 1, commencing with Section
3000 for factory-built housing administrative and
enforcement authority, permits, fees, violations,
inspections and penalties.
108.4 Permits, Fees, Applications and
Inspections
108.4.1 Permits. A written construction permit
shall be obtained from the enforcing agency prior to the
erection, construction, reconstruction, installation,
relocation, or alteration of any plumbing system.
Exceptions:
1 . Work exempt from permits as specified in
Appendix Chapter 1, Sections 103.1.2.1 and
103.1.2.2 of this code
2. Changes, alterations, or repairs of a minor
nature not affecting structural features, egress,
sanitation, safety or accessibility as determined
by the enforcing agency.
Exemptions from permit requirements
shall not be deemed to grant authorization for
any loork to be done in any manner in violation
of other provision of law or this code.
108.4.2 Fees. Subject to other provisions of law the
governing body of any city, county, or city and
county may prescribe fees to defray the cost of
enforcement of rules and regidations promulgated by
the Department of Housing and Community
Development. The amount of the fees shall not exceed
the amount reasonably necessary to administer or
process permits, certificates, forms, or other
documents, or to defray the costs of enforcement. For
additional information, see State Housing Law,
Health and Safety Code, Division 13, Part 1.5,
Section 17951 and California Code of Regidations,
Title 25, Division 1, Chapter 1, Subchapter 1, Article
3. commencing with Section 6.
108.4.3 Plan Review and Time Limitations. Subject
to other provisions of law, provisions related to plan
checking, prohibition of excessive delays, and contracting
with or employment of private parties to perform plan
checking are set forth in State Housing Law, Health and
Safety Code Section 17960.1, and for employee housing,
in Health and Safety Code Section 17021.
108.4.3.1 Retention of Plans. The building
department of every city, county or city and
county shall maintain an official copy, microfilm,
or electronic or other type of photographic copy of
the plans of every building, during the life of the
building, for which the department issued a
building permit.
Exceptions:
1. Single or multiple dwellings not more than
two stories and basement in height.
2. Garages and other structures appurtenant
to buildings listed in exception (1).
3. Farm or ranch buildings appurtenant to
buildings listed in exception (!)■
4. Any one-story building where the span
between bearing walls does not exceed 25
feet, except a steel frame or concrete bidlding.
All plans for common interest
developments as defined in Section 1351 of
ADMINISTRATION
108.4-108.7
, t]ie California Civil Code sjtall he retained.
For additional information regarding plan
retention and reproduction of plans by an
enforcing agency, see Health and Safety
Code Sections 19850 through 19852.
108.4.4 Inspections. Construction or work for
which a permit is required shall be subject to inspection
by the building official and such construction or work
shall remain accessible and exposed for inspection
purposes until approved. Approval as a result of an
inspection shall not be construed to be an approval of a
violation of the provisions of this code or other
regulations of the Department of Housing and
Community Development.
108.5 Right of Entry for Enforcement
108.5.1 General. Subject to other provisions of law,
officers and agents of the enforcing agency may enter
and inspect public and private properties to secure
compliance with the rules and regulations promulgated
by the Department of Housing and Community
Development. For limitations aiid additional
information regarding enforcement, see the following:
1. For applications subject to State Housing Law as
referenced in Section 108.3.2.1 of this code, refei' to
Health and Safety Code Sections 17970 through
17972 and California Code of Regulations, Title
25, Division 1, Chapter 1, Subchapter 1.
2. For applications subject to the Mobilehome Parks
Act as referenced in Section 108.3.2.2 of this code,
refer to the Health and Safety Code, commencing
with Section 18200 and California Code of
Regulations, Title 25, Division 1, Chapter 2.
3. For applications subject to the Special Occupancy
Parks Act as refei-enced in Section 108.3.2.3 of this
code, refer to the Health and Safety Code,
commencing with Section 18860 and California Code
ofReguhtions, Title 25, Division 1, Clwpter 2.2.
4. For applications subject to the Employee
Housing Act CIS referenced in Section 108.3.2.4
of this code, refer to Health and Safety Code
Section 17052 and California Code of Regulations,
Title 25, Division 1, Chapter 1, Subchapter 3.
5. For applications subject to the Factory-Built
Housing Act as referenced in Section 108.3.2.5
of this code, refer to Health and Safety Code
Sections 19991 through 19992 and California
Code of Regulations, Title 25, Division 1,
Chapter 3, Subchapter 1.
108-6 Local Modification by Ordinance or
Regulation
108.6.1 General, Subject to other provisions of
law, a city, county or city and county may make
^i-— changes Jo JM provisions.MaptedbyJhe-Departmmt:_
of Housing and Community Development. If any
city, county or city and county does not amend, add,
or repeal by local ordinances or regulations the
provisions published in this code or other regulations
promulgated by the Department of Housing and
Community Development, those provisions shall be
applicable and shall become effective 180 days after
publication by the California Building Standards
Commission. Amendments, additions, and deletions
to this code adopted by a city, county or city and
county pursuant to California Health and Safety
Code Sections 17958.7 and 18941.5, together with all
applicable portions of this code, shall also become
effective 180 days affer publication of the California
Building Standards Code by the California Building
Standards Commission.
108.6.2 Findings, Filings, and Rejections of
Local Modifications. Prior to making any ,
modifications or establishing more restrictive
building standards, the governing body shall make
express findings and filings, as required by California
Health and Safety Code Section 17958.7 stating their
findings and that such modifications are reasonably
necessary due to local climatic, geological, or
topographical conditions. No modification shall
become effective or operative unless the following
requirements are met:
1. The express findings shall be made available as a
public record.
2. A copy of the modification and express finding,
each document marked to cross-reference the
other, shall be filed with the California Building
Standards Commission for cities, counties, or
cites and counties, and with the Department of
Housing and Community Development for fire
protection districts.
3. The California Building Standards Commission
has not rejected tlie modification or change.
Nothing in this section shall limit the
authority of fire protection districts pursuant to
California Health and Safety Code Section
13869.7 (a).
108.7 Alternate Materials, Designs, Tests and
Methods of Construction
108.7.1 General. The provisions of this code as
adopted by the Department of Housing and
Community Development are not intended to
prevent the use of any alternate material, appliance,
installation, device, arrangement, design or method of
construction not specifically prescribed by this code.
Consideration and approval of alternates shall comply
with Section 108.7.2 for local building departments
and Section 108.7.3 for the Department of Housing
and Community Development.
108.7.2 Local Building Departments. The
building department of any city, county or city and
county may approve alternates for use in tlie erection,
construction, reconstruction, movement enlargement,
conversion, alteration, repair, removal, demolition or
-'-- — arrangement cf-apartmeiithouses,hotels,-motels,lodging—
houses, or dwellings, including accessory buildings,
facilities, and uses thereto , except for the following:
1. Structures located in mobilehome parks as
defined in California Health and Safety Code
Section 18214.
108.7-108.9
2007 CALIFORNIA PLUMBING CODE
2. Structures located in special occupancy parks as
defined in California Health and Safety Code
Section 18862.43.
3. Factory-built housing as defined in California
Health and Safety Code Section 19971.
108.7.2.1 Approval of Alternates. The
consideration and approval of alternates by a
local building department shall comply with the
following procedures and limitations:
1. The approval shall be granted on a case-by-
case basis.
2. Evidence shall be submitted to substantiate
claims that the proposed alternate, in
performance, safety, and for the protection
of life and health, conforms to, or is at least
equivalent to, the standards contained in
this code and other rules and regulations
promulgated by the Department of Housing
and Community Development.
3. The local building department may require
tests performed by an approved testing
agency at the expense of the owner or
owner's agent as proof of compliance.
4. If the proposed alternate is related to
accessibility in covered multifamily dwellings
or facilities serving covered multifamily
dwellings as defined in Chapter 11 A of the
CBC, the proposed alternate must also meet
the threshold set for "EQUIVALENT
FACILITATION" as defined in Chapter llA
of the CBC.
For additional information regarding
approval of alternates by a local building
department pursuant to the State Housing
Law, see California Health and Safety Code
Section 17951(e) and California Code
Regulations, Title 25, Division 1, Chapter
1, Subchapter 1.
108.7.3 Department of Housing and
Community Development. The Department of
Housing and Community Development may approve
alternates for use in the erection, construction,
reconstruction, movement enlargement, conversion,
alteration, repair, removal demolition or arrangement
of apartment houses, hotels, motels, lodging houses,
dwellings, including accessory buildings, facilities,
and uses thereto. The consideration and approval of
alternates shall comply with the following:
1. The department may require tests at the expense
of the owner or owner's agent to substantiate
compliance with the California Building
Standards Code.
2. The approved alternate shall, for its intended
purpose, be at least equivalent in performance
and safety to the materials, designs, tests, or
methods of construction prescribed by this code.
108.8 Appeals Board
108.8. 1 General. Every city, county or city and
county, shall establish a local appeals board and a
housing appeals board. The local appeals board and
housing appeals board shall each be comprised of at
least five voting members who shall serve at the
pleasure of the city, county or city and county.
Appointees shall not be employees of the jurisdiction
and shall be qualified and specifically knowledgeable
in the California Building Standards Codes and
applicable local ordinances.
108.8.2 Definitions. The following terms shall for
the purposes of this section have the meaning shown.
Housing Appeals Board. The board or agency of
a city, county or city and county which is authorized
by the governing body of the city, county or city and
county to hear appeals regarding the requirements of
the city, county or city and county relating to the use,
maintenance, and change of occupancy of buildings
and structures, including requirements governing
alteration, additions, repair, demolition, and moving.
In any area in which there is no such board or agency,
"housing appeals board" means the local appeals
board having jurisdiction over the area.
Local Appeals Board. The board or agency of a
city, county or city and county which is authorized
by the governing body of the city, county or city and
county to hear appeals regarding the building
requirements of the city, county or city and county.
In any area in which there is no such board or agency,
"local appeals board" means the governing body of
the city, county or city and county having
jurisdiction over the area.
108.8.3 Appeals. Except as otherwise provided by
law, any person, firm, or corporation adversely
affected by a decision, order, or determination by a
city, county or city and county relating to the
application of building standards published in the
California Building Standards Code, or any other
applicable rule or regulation adopted by the
Department of Housing and Community Development,
or any lawfidly enacted ordinance by a city, county
or city and county, may appeal the issue for
resolution to the local appeals board or housing
appeals board as appropriate.
The local appeals board shall hear appeals relating to
new building construction and the housing appeals
board shall hear appeals relating to existing btdldings.
108.9 Unsafe Buildings or Structures
108.9. 1 Auttiority to Enforce. Subject to other
provisions of law, the administration, enforcement,
actions, proceedings, abatement, violations and
penalties for unsafe buildings and structures are
contained in the following statutes and regulations:
1. For applications subject to State Housing Law as
referenced in Section 108.3.2.1 of this code, refer to
Health and Safety Code Sections 17910 through
17995.5 and California Code of Regulations, Title
25, Division 1, Chapter 1, Subchapter 1.
2. For applications subject to the Mobilehome Parks
Act as referenced in Section 108.3.2.2 of this code,
ADMINISTRATION
108.9-110.0
refer to the Health and Safety Code, coimnencing
with Section 18200 and California Code of
Regulations, Title 25, Division 1, Chapter 2.
3. Vor applications subject to the Special
Occupancy Parks Act as referenced in Section
108.3.2.3 of this code, refer to the Health and
Safety Code, commencing with Section 18860
and California Code of Regulations, Title 25,
Division 1, Chapter 2.2.
4. For applications subject to the Employee
Housing Act as referenced in Section 108.3.2.4
of this code, refer to Health and Safety Code
Sections 17000 through 17062.5 and California
Code of Regulations, Title 25, Division 1,
Chapter 1, Subchapter 3.
5. For applications subject to the Factory-Built
Housing Act as referenced in Section 108.3.2.5
of this code, refer to Health and Safety Code
Sections 19960 through 19997 and California
Code of Regulations, Title 25, Division 1,
Chapter 3, Subchapter 1.
108.9.2 Actions and Proceedings. Subject to
other provisions of law, punishments, penalties and
fines for violations of building standards are
contained in the following statutes and regulations:
1. For applications subject to State Housing Law as
referenced in Section 108.3.2.1 of this code, refer to
Health and Safety Code Sections 17980 through
17995.5 and California Code of Regulations, Title
25, Division 1, Clmpter 1, Subchapter 1.
2. For applications subject to the Mobilehome Parks
Act as referenced in Section 108.3.2.2 of this
code, refer to Health and Safety Code Sections
18200 through 18700 and California Code of
Regulations, Title 25 Division 1, Chapter 2.
3. For applications subject to the Special
Occupancy Parks Act as referenced in Section
108.3.2.3 of this code, refer to Health and Safety
Code Sections 18866 through 18869 and
California Code of Regulations, Title 25,
Division 1, Chapter 2.2.
4. For applications subject to the Employee
Housing Act as referenced in Section 108.3.2.3
of this code, refer to Health and Safety Code
Sections 17060 through 17062.5 and California
Code of Regulations, Title 25, Division 1,
Chapter 1, Subchapter 3.
5. For applications subject to the Factory-Built
Housing Act as referenced in Section 108.3.2.4
of this code, refer to Health and Safety Code
Sections 19995 through 19997 and California
Code of Regulations, Title 25, Division 1,
Chapter 3, Subchapter 1.
108. 10 O tlier Building Regulations
108.10.1 Existing Structures. Notwithstanding
other provisions of law, the replacement, retention, and
extension of original materials and the use of original
methods of construction for any existing building or
accessory structure, or portions thereof, shall be
permitted. For additional information, see California
Health and Safety Code Sections 17912 and 17958.8.
108.10.2 Moved Structures. Subject to the
requirements of California Health and Safety Code
Sections 17922.3 and 17958.9, local ordinances or
regulations relating to a moved residential or
accessory structure shall, after July 1, 1978, permit
the retention of existing materials and methods of
construction so long as the structure does not become
or continue to be a substandard building.
1 09. Division of ttie State Architect
109.1 Division of the State Architect-Access
Compliance.
Note: For applications listed in Section 109.1 of the
California Building Code, regulated by the Division of the
State Architect-Access Compliance see California Code of
Regulations, Title 24, Part 2 (California Building Code),
California Chapter 1 (General Code Provisions) under
authority cited by Government Code Section 4450 and in
reference cited by Government Code Sections 4450
through 4461, 12955.1 and Health and Safety Code
Sections 18949.1, 19952 through 19959.
109.2 Division of the State Architect - Structural
Safety
Application - Public elementary and secondary school,
community college buildings, and state-owned or state-
leased essential services buildings.
Enforcing Agency ^ (DSA - SS)
Authority Cited - Education Code §17310 and 81142,
and H&S Code §16022.
Reference - Education Code §§ 17280 through 17317,
and 81130 through 81147, and H&S Code §§16000
through 16023.
The Division of the State Architect has been
delegated the responsibility and authority by the
Department of General Services to review and approve the
design and observe the construction of public school
buildings, and state-owned or state-leased essential
services buildings.
110.0 Office of Statewide Health Planning and
Development
110.1 OSHPD 1. Specific scope of application of the
agency responsibile for enforcement, enforcement agency,
specific authority to adopt and enforce such provisions of
this code, unless otherwise stated.
OSHPD 1
Application - General acute-care hospitals and
acute psychiatric hospitals, excluding distinct part
units, or distinct part freestanding buildings
p rovid ing s killed nursi ng or int ermediate-care -
services. For Structural Regulations: Skilled nursing
facilities and/or intermediate-care facilities except
those skilled nursing facilities and intermediate care
facilities of single story. Type V, wood or light steel-
fiwne construction.
110.1-111.1
2007 CALIFORNIA PLUMBING CODE
Enforcing Agency - Office of Stateiuide Health
Planning and Development (OSHPD). The office
shall enforce the Division of the State Architect acces
compliance regulations and the regulations of the
Office of the State Fire Marshal for the above stated
facilih/ types.
110.1.1 Applicable administrative standards.
1. Title 24, Part 1, California Code of Regulations:
Chapter 6&7
2. Title 24:, Part 2, California Code of Regulations:
Section 101 and 110 of Chapter 1 and Appendix
chapter 1.
110.1.2 Applicable building standards.
California Building Standards Code, Title 24, Parts
2,3,4,5,9,10 and 12.
110.2 OSHPD 2. Specific scope of application of the
agency responsible for enforcement, enforcement
agency, specific authority to adopt and enforce such
provisions of this code, unless otherwise stated.
Application - Skilled nursing facilities and
intermediate-care facilities, including distinct part
skilled nursing and intermediate-car services on a
general acute-care or acute psychiatric hospital
license, provided either in a rate unit or a
freestanding building. For Structural Regulations:
Single-story, Type V skilled nursing facility and/or
intermediate-care facilities utilizing wood or light
steehframe construction.
Enforcing Agency— Office of Statewide Health
Planning and Development (OSHPD). The office
shall also enforce the Division of the State Architect
access compliance regidations and the regidations of
the Office of the State Fire Marshal for the above
stated facility type.
110.2.1 Applicable administrative
standards:
1 . Title 24, Par 1, California Code of
Regidations: Chapter 7
2. Title 24, Part 2, California Code of
Regulations: Section 101 and 110 of
Chapter 1 and Appendix Chapter 1.
110.2.2 Applicable building standards.
California Building Standards Code, Title 24,
Parts 2, 3, 4, 5, 9, 10 and 12.
110.3 OSHPD 3. Specific scope of application of the
agency responsible for enforcement, enforcement
agency, specific authority to adopt and enforce such
provisions of this code, unless otherwise stated.
OSHPD 3
Application - Licensed clinics and any freestanding
building under a hospital license where outpatient
clinical services are provided.
Enforcing Agency - Local building department.
110.3.1 Applicable administrative standards.
California Building Standards Code, Title 24, Parts
2, 3, 4, 5, 9, 10 and 12.
110.4 OSHPD 4. Specific scope of application of the
agency responsible for enforcement, enforcement agency,
specific authority to adopt and enforce such provisions of
this code, unless otherwise stated.
OSHPD 4
Application - Correctional Treatment Centers.
Enforcing Agency - Office of Statewide Health
Planning and Development (OSHPD). The office
shall also enforce the Division of the State Architect
access compliance regidations and the regidations of
the Office of the State Fire Marshal for the above
stated facility types.
110.4.1 Applicable administrative standards.
1. Title 24, Part 1, California Code of Regidations:
Chapter 7.
2. Title 24, Part 2, California Code of Regulations:
Sections 101 and 110 of Chapter 1 and Appendix
Chapter 1.
110.4.2 Applicable buildind standards.
California Building Standards Code, Title 24, Parts
2, 3, 4, 5, 9, 10 and 12.
111.0 Office of the State Fire Marshal
111.1 SFM-Office of the State Fire Marshal.
Any building or structure used or intended for
use as an asylum, jail, mental hospital, hospital, sanitarium,
home for the aged, children's nursery, children's home,
school or any similar occupancy of any capacity.
Any theater, dancehall, skating rink, auditorium,
assembly hall, meeting hall, nightclub, fair building, or
similar place of assemblage where 50 or more persons may
gather together in a building, room or structure for the
purpose of amusement, entertainment, instruction,
deliberation, worship, drinking or dining, awaiting
transportation, or education.
Authority Cited. Health and Safety Code Section 13143.
Reference. Health and Safety Code Section 13143.
Small Family Day-care Homes
Authority Cited. Health and Safety Code Sections
1597.45, 1597.54, 13143 and 17921.
Reference. Health and Safety Code Section 13143.
Large Family Day-care Homes
Authority Cited. Health and Safety Code Sections
1597.46, 1597.54 and 17921.
Reference. Health and Safety Code Section 13143.
Residential Facilities and Residential Facilities
for the Elderly
Authority Cited. Health and Safety Code Section 13133.
Reference. Health and Safety Code Section 13143.
Any state institution or other state-owned or
state-occupied building.
Authority Cited. Health and Safety Code Section 13108.
Reference. Health and Safety Code Section 13143.
High-rise Structures
Authority Cited. Health and Safety Code Section 13211.
Reference. Health and Safety Code Section 13143.
Motion Picture Production Studios
Authority Cited. Health and Safety Code Section 13143.1.
Reference. Health and Safety Code Section 13143.
10
ADMINISTRATION
111.1-111.2
Organized Camps
Authority Cited. Health and Safety Code Section 18897.3.
Reference. Health and Safety Code Section 13143.
Residential
All hotels, motels, lodging houses, apartment
houses and dwellings, including congregate residences
and buildings and structures accessory thereto.
Multiple-story structures existing on January 1,1975,
let for human habitation, including and limited to, hotels,
motels, apartment houses, less than 75 feet (22 860 mm)
above the lowest floor level having building access, wherein
rooms used for sleeping are let above the ground floor.
Authority Cited. Health and Safety Code Sections
13143.2 and 17921.
Reference. Health and Safety Code Section 13143.
Residential Care Facilities
Certified family-care homes, out-of-home placement
facilities, halfway houses, drug and/or alcohol
rehabilitation facilities and any building or structure used
or intended for use as a home or institution for the
housing of any person of any age when such person is
referred to or placed within such home or institution for
protective social care and supervision services by any
governmental agency.
Authority Cited. Health and Safety Code Section 13143.6.
Tents, awnings or other fabric enclosures used
in connection with any occupancy.
Authority Cited. Health and Safety Code Section 13116.
Reference. Health and Safety Code Section 13143.
Enforcing Agency. Pursuant to Section 13146, Health
and Safety Code:
Fire alarm devices, equipment and systems in
connection with any occupancy.
Authority Cited. Health and Safety Code Section 13114.
Hazardous materials.
Authority Cited. Health and Safety Code Section 13143.9.
Flammable and combustible liquids.
Authority Cited. Health and Safety Code Section 13143.6.
Public School Automatic Fire Detection, Alarm,
and Sprinkler Systems
Authority Cited. Health & Safety Code Section 13143
and California Education Code Article 7.5, Sections
17074.50, 17074.52, & 17074.54.
Reference. Government Code Section 11152.5 and Health
& Safety Code Section 13143 and California Education
Code Chapter 12.5, Leroy F. Greene School Facilities Act
of 1998, Article 1.
Wildland Urban Interface Fire Area
Authority Cited. Health & Safety Code Sections 13143,
13108.5(a) and 18949.2(b) and (c) and Government Code
Section 51189.
Reference. Health & Safety Code Sections 13143and
Government Code Sections 51176, 51177, 51178 and 51179
and Public Resources Code Sections 4201 through 4204
1 1 1.2 Duties and Powers of the Enforcing Agency
111.2.1 Enforcement.
111.2.1.1 The responsibility for enforcement of
building standards adopted by the State Fire
Marshal and published in the California
Building Standards Code relating to fire and
panic safety and other regulations of the Office of
the State Fire Marshal shall be as follows:
1. The city, county, or city and county with
jurisdiction in the area affected by the
standard or regulation shall delegate the
enforcement of the building standards
relating to fire and panic safety and other
regulations of the State Fire Marshal as they
relate to Group R, Division 3 dwellings, as
described in Section 310.1 of Part 2 of the
California Building Standards Code, to
either of the following:
1.1. The chief of the fire authority of the city,
county, or city and county, or an authorized
representative.
1.2. The chief building official of the city,
county, or city and county, or an authorized
representative.
2. The chief of any city or county fire department
or of any fire protection district, and
authorized representatives, shall enforce
within the jurisdiction the building standards
and other regulations of the State Fire
Marshal, except tlwse described in Item 1 or 4.
3. The State Fire Marshal shall have authority
to enforce the building standards and other
regulations of the State Fire Marshal in
areas outside vf corporate cities and districts
providing fire protection services.
4. The State Fire Marshal shall have authority
to enforce the building standards and other
. regulations of the State Fire Marshal in
corporate cities and districts providing fire-
protection services on request of the chief
fire official or the governing body.
5. Any fee charged pursuant to the enforcement
authority of this section shall not exceed the
estimated reasonable cost of providing the
service for which the fee is charged pursuant
to Section 66014 of the Government Code.
111.2.1.2 Pursuant to Health and Safety Code
Section 13108, upon the written request of the
chief fire official of any city, county or fire-
protection district, the State Fire Marshal may
~---------Muthorize--such--chieffire-officialMndJiis-Jor---h^
authorized representatives, in their geographical
area of responsibility, to make fire-prevention
inspections of state-owned or state-occupied
buildings, other than state institutions, for the
purpose of enforcing the regulations relating to
11
111.2
2007 CALIFORNIA PLUMBING CODE
fire and panic safety adopted by the State Fire
Marshal pursuant to this section and building
standards relating to fire and panic safety
published in the California Building Standards
Code. Authorization from the State Fire Marshal
shall be limited to those fire departments or fire
districts which maintain a fire-prevention
bureau staffed by paid personnel.
Pursuant to Health and Safety Code
Section 13108, any requirement or order made
by any chief fire official who is authorized by the
State Fire Marshal to make fire-prevention
inspections of state-owned or state-occupied
buildings, other than state institutions, may be
appealed to the State Fire Marshal. The State
Fire Marshal shall, upon receiving an appeal and
subject to the provisions of Chapter 5
(commencing with Section 18945) of Part 2, 5 of
Division 13 of the Health and Safety Code,
determine if the requirement or order made is
reasonably consistent with the fire and panic
safety regtdations adopted by the Office of the
State Fire Marshal and building standards
relating to fire and panic safety published in the
California Building Code.
Any person may request a code
interpretation from the State Fire Marshal relative
to the intent of any regulation or provision
adopted by the State Fire Marshal. When the
request relates to a specific project, occupancy or
building, the State Fire Marshal shall revieiu the
issue with the appropriate local enforcing agency
prior to rendering such code interpretation.
111.2.1.3 Pursuant to Health and Safety Code
Section 13112, any person who violates any
order, rule or regulation of the state fire marshal
is guilty of a, misdemeanor punishable by a fine
of not less than $100.00 or more than $500.00,
or by imprisonment for not less than six months,
or by both. A person is guilty of a separate
offense each day during which he or she commits,
continues or permits a violation of any provision
of, or any order, rule or regtdation of, the state
fire marshal as contained in this code.
Any inspection authority who, in the
exercise of his or her authority as a deputy state
fire marshal, causes any legal complaints to be
filed or any arrest to be made shall notify the state
fire marshal immediately following such action.
1 1 1.2.2 Right of entry.
The fire chief of any city, county or fire-
protection district, or such person's authorized
representative, may enter any state institution or any
other state-owned or state-occupied building for the
purpose of preparing a fire-suppression preplanning
program or for the purpose of investigating any fire
in a state-occupied building.
The State Fire Marshal, his or her deputies or
salaried assistants, the chief of any city or county fire
department or fire protection district and his or her
authorized representatives may enter any building or
premises not used for dwelling purposes at any
reasonable hour for the purpose of enforcing this
chapter. The owner, lessee, manager or operator of
any such building or premises shall permit the State
Fire Marshal, his or her deputies or salaried
assistants and the chief of any city or county fire
department or fire-protection district and his or her
authorized representatives to enter and inspect them
at the time and for the purpose stated in this section.
111.2.3 More Restrictive Fire and Panic
Safety Buiiding Standards.
111.2.3.1 Any fire-protection district organized
pursuant to Health and Safety Code Part 2.7
(commencing with Section 13800) of Division 12
may adopt building standards relating to fire and
panic safety that are more stringent than those
building standards adopted by the State Fire
Marshal and contained in the California Building
Standards Code. For these purposes, the district
board shall he deemed a legislative body and the
district shall be deemed a local agency. Any
changes or modifications that are more stringent
than the requirements published in the California
Building Standards Code relating to fire and
panic safety shall be subject to 101.8.1.
111.2.3.2 Any fire protection district that
proposes to adopt an ordinance pursuant to this
section shall, not less than 30 days prior to
noticing a proposed ordinance for public hearing,
provide a copy of that ordinance, together with
the adopted findings made pursuant to Section
111.2.3.1, to the city, county, or city and county
where the ordinance will apply. The city, county,
or city and county, may provide the district with
written comments, which shall become part of the
fire protection district's public hearing record.
1 1 1.2.3.3 The fire-protection district shall
transmit the adopted ordinance to the city, county,
or city and county where the ordinance will apply.
The legislative body of the city, county, or city and
county, may ratify, modify or deny an adopted
ordinance and transmit its determination to the
district within 15 days of the- determination. Any
modification or denial of an adopted ordinance shall
include a written statement describing the reasons
for any modifications or denial. No ordinance
adopted by the district shall be effective until
ratification by the city, county, or city and county
where the ordinance will apply. Upon ratification of
an adopted ordinance, the city, county, or city arid
county, shall file a copy of the findings of the
district, and any findings of the city, county, or city
and county, together with the adopted ordinance
expressly marked and identified to which each
finding refers, in accordance with Section 101.8.1:3.
111.2.4 Request for aiternate means of
protection. Requests for approval to use an
alternative material, assembly or materials, equipment.
12
ADMINISTRATION
1 1 1 .2 - 1 11 .4
method of construction, method of installation of
equipment, or means of protection shall he made in
writing to the enforcing agency by the owner or the
owner's authorized representative and shall he
accompanied hy a full statement of the conditions.
Sufficient evidence or proof shall he submitted to
substantiate any claim that may be made regarding its
conformance. The enforcing agency may require tests
and the submission of a test report from an approved
testing organization as set forth in Title 19, California
code of Regulation, to substantiate the equivalency of
the proposed alternative means of protection.
The authority having jurisdiction may consider
implementation of the findings and recommendations
identified in a Risk Management Plan (RMP) as
developed in accordance with Title 19, Division 2,
Chapter 3, when evaluating requests for alternative
means of protection.
Approval of a request for use of an alternative
material, assembly of materials, equipment, method of
construction, method of installation of equipment, or
, means of protection made pursuant to these
provisions shall be limited to the particular case
covered by request and shall not be construed as
establishing any precedent for any future request.
111.2.5 Appeals. Wtien a request for an alternate
means of protection has been denied by the enforcing
agency, the applicant may file a written appeal to the
state fire marshal for consideration of the applicant's
proposal. In considering such appeal, the state fire
marshal may seek the advice of the State Board of Fire
Services. The State Fire Marshal shall, after
considering all of the facts presented, including any
recommendations of the State board of Fire Services,
determine if tire proposal is for the purposes intended,
at least equivalent to that specified in these
regulations in quality, strength, effectiveness, fire
resistance, durability and safety, and shall transmit
such findings and any recommendations to the
applicant and to the enforcing agency.
111.3 Construction Documents. In addition to the
provisions of this Section, see Title 24, Part 2, California
Building Code, Appendix Chapter 1, Section 106 for
additional requirements.
111.3.1 Public schools. Plans and specifications for
the construction, alteration or addition to any building
owned, leased or rented hy any public school district
shall be submitted to the Division of the State Architect,
Office of Regulation Sewicesfor review and approval.
Exception: Upon the annual submission of a
written request hy the chief of any city, county,
or city and county fire department or fire-
protection district to the Division of the State
Architect, Office of Regulation Services,
approvals required hy this subsection shall he
'—^^^:^^^^:-^obiainedfivmthe-appropriate--chiefor--l^^^
authorized representative. In such instances
plans and specifications may he submitted to the
State Fire Marshal for relay to the appropriate
local authority or may be submitted directly to
such local authority.
111.3.2 Movable wails and partitions. Plans or
diagrams shall be submitted to the enforcing agency
for approval before the installation of, or
rearrangement of, any movable wall or partition in
any occupancy. Approval shall be granted only if
there is no increase in the fire hazard.
111.3.3 New construction high-rise buildings.
1. Complete plans or specifications, or both, shall be
prepared covering all work required to comply
with new construction high-rise buildings. Such
plans and specifications shall be submitted to the
enforcing agency having jurisdiction.
2. All plans and specifications shall be prepared
under the responsible charge of an architect or a
civil or structural engineer authorized by law to
develop construction plans and specifications, or
by both such architect and engineer. Plans and
specifications shall he prepared by an engineer
duly qualified in that branch of engineering
necessary to perform such services. Administration
of the work of construction shall be under the
charge of the responsible architect or engineer
except tlrnt where plans and specifications involve
alterations or repairs, such work of construction
may be administered hy an engineer duly qualified
to perform such services and holding a valid
certificate under Chapter 7 (commencing with
Section 65700) of Division 3 of the Business and
Professions Code for performance of services in
that branch of engineering in which said plans,
specifications and estimates and work of
construction are applicable.
This section shall not be construed as
preventing the design of fire-extinguishing
systems by persons holding a C-16 license issued
pursuant to Division 3, Otapter 9, Business and
Professions Code. In such instances, however, the
responsibility charge of this section shall prevail.
111.3.4 Existing high-rise buildings.
1. Complete plans or specifications, or both, shall be
prepared covering all work required hy Section
3412, for existing high-rise buildings. Such
plans or specifications shall be submitted to the
enforcing agency having jurisdiction.
2. When new construction is required to conform
with the provisions of these regulations, complete
plans or specifications, or both, sliall be prepared in
accordance with the provisions of this subsection.
As used in this section "new construction" is not
intended to include repairs, replacements or minor
alterations which do not dismpt or appreciably add
to or affect the structural aspects of the building-
111.3.5 Retention of Plans. Refer to Building
Standards Law, Health and Safety Code Sections
—-— 19850 and 19851, for-permaneniretention of plans-^—
111.4 Fees
111.4.1 Other fees. Pursuant to Health and Safety
Code Section 13146.2, a city, county or district which
inspects a hotel, motel, lodging house, or apartment
13
111.4-114.0
2007 CALIFORNIA PLUMBING CODE
house may charge and collect a fee for the inspection
from the owner of the structure in an amount, as
determined by the city, county or district, sufficient
to pay its costs of that inspection.
111.4.2 Large Family Day Care. Pursuant to
Health and Safety Code Section 1597.46, Large
Family Day-care Homes, the local government shall
process any required permit as economically as
possible, and fees charged for review shall not exceed
the costs of the review and permit process.
111.4.3 High-Rise. Pursuant to Health and Safety
Code Section 13217, High-rise Structure Inspection:
Fees and Costs, a local agency which inspects a high-
rise structure pursuant to Health and Safety Code
Section 13217 may charge and collect a fee for the
inspection from the owner of the high-rise structure
in an amount, as determined by the local agency,
sufficient to pay its costs of that inspection.
111.4.4 Fire Ciearance Preinspection. Pursuant
to Health and Safety Code Section 13235, Fire
Clearance Preinspection, fee; upon receipt of a request
from a prospective licensee of a community care
facility, as defined in Section 1502, of a residential-care
facility for the elderly, as defined in Section 1569.2, or
of a child day-care facility, as defined in Section
1596.750, the local fire enforcing agency, as defined in
Section 13244, or state fire marshal, whichever has
primary jurisdiction, shall conduct a preinspection of
the facility prior to the final fire clearance approval. At
the time of the preinspection, the primary fire enforcing
agency shall price considtation and interpretation of
the fire safety regulations, and shall notify the
prospective licensee of the facility in writing of the
specific fire safety regulations which shall be enforced
in order to obtain fire clearance approval. A fee of not
more than $50.00 may be charged for the preinspection
of a facility with a capacity to serve 25 or fetoer
persons. A fee of not more than $100.00 may be
charged for a preinspection of a facility with a capacity
to serve 26 or more persons.
111.4.5 Care Facilities. The primary fire enforcing
agency shall complete the final fire clearance
inspection for a community care facility, residential-
care facility for the elderly, or child day-care facility
within 30 days of receipt of the request for the final
inspection, or as of the date the prospective facility
requests the final prelicensure inspection by the State
Department of Social Services, whichever is later.
Pursuant to Health and Safety Code Section
13235, a preinspection fee of not more than $50 may
be charged for a facility with a capacity to serve 25 or
less clients. A fee of not more than $100 may be
charged for a preinspection of a facility with a
capacity to serve 26 or more clients.
Pursuant to Health and Safety Code Section
13131.5, a reasonable final inspection fee, not to exceed
the actual cost of inspection services necessary to
complete a final inspection may be charged for
Occupancies classified as residential care facilities for
the elderly (RCFE).
Pursuant to Health and Safety Code Section
1569.84, neither the state fire marshal nor any local
public entity shall charge any fee for enforcing fire
inspection regulations pursuant to state law or
regulation or local ordinance, with respect to
residential-care facilities for the elderly (RCFE) which
service six or fewer persons.
111.4.6 Requests of the Office of the State
Fire Marshal Requests. Whenever a local
authority having jurisdiction requests that the State
Fire Marshal perform plan review and/or inspection
services related to a building permit, the applicable
fees for such shall be payable to the Office of the State
Fire Marshal.
111.5 Inspections.
111.5.1 Existing Group 1-1 or R occupancies.
Licensed 24-hour care in a Group I-l or R occupancy
in existence and originally classified under previously
adopted state codes be reinspected under the
appropriate previous code provided there is no change
in the use or character which would place the facility
in a different occupancy group.
111.6 Certificate of Occupancy. A Certificate of
Occupancy shall be issiLedas specified in Title 24, Part 2,
California Building Code, Appendix Chapter 1, Section 110.
Exception: Group R-3 and Group U Occupancies.
111.7 Temporary Structures and Uses. See Title 24,
Part 2, California Building Code, Appendix Chapter 1,
Section 107.
111.8 Service Utilities. See Title 24, Part 2, California
Building Code, Appendix Chapter 1, Section 111.
111.9 Stop Work Order. See Title 24, Part 2, California
Building Code, Appendix Chapter 1, Section 114.
111.10 Unsafe Buildings, Structures and
Equipment. See Title 24, Part 2, California Building
Code, Appendix Chapter 1, Section 115.
1 12.0 Reserved for the State Librarian
1 13.0 Department of Water Resources (DWR)
DWR- Department of Water Resources.
Application - Construction, Installation, or
alteration of graywater systems for subsurface
irrigation and other safe uses.
Enforcing Agency - Local building department or
the Department of Water Resources.
Authority Cited - Water Code Sections 14875
through 14877.3.
Reference - Water Code Sections 14875 through
14877.3.
114.0 Reserved for the State Lands Commission.
14
CHAPTER 2
DEFINITIONS
201.0 General.
For the purpose of this code, the foUowmg terms
have the meanings indicated in tills chapter.
No attempt is made to define ordinary words,
wMch are used iii accordance witla their established
dictionary meanings, except where a word has been
used loosely and it is necessary to define its meaning
as used in tliis code to avoid misunderstanding.
The definitions of terms are arranged alphabe-
tically accordiiig to flie first word of the term.
202.0 Definition of Terms.
203.0
-A-
ABS - AcrylonitrUe-butadiene-styrene.
Accessible - Wlien applied to a fixture, connection,
appliance, or equipment, "accessible" meaiis having
access thereto, but which first may require the
removal of an access panel, door, or similar
obstruction. "Readily accessible" means direct access
witliout the necessity of removmg any panel, door,
or similar obstruction.
Airbreak - A physical separation wliich may be a
low inlet into the indirect waste receptor from the
fixture, appHance, or device indirectly connected.
Air Chamber - A pressure surge-absorbing device
operating through the compressibility of air.
Airgap, Drainage - The unobstructed vertical
distance tlirough the free atmosphere between the
lowest opening frorn any pipe, plumbing fixture,
appliance, or appurtenance conveymg waste to the
flood-level rim of the receptor.
Airgap, Water Distribution - The unobstructed
vertical distance through the free atmosphere
between the lowest openirrg from any pipe or faucet
conveying potable water to the flood-level rim of any
tank, vat, or fixture.
Anchors - See Supports.
Approved - Acceptable to the Authority Having
Jurisdiction.
Exception: [HCD1 & HCD2] "Approved" means
meeting the approval of the Enforcing Agency, except
— — as-otherwise provided-by law, when used in -
connection with any system, material, type of
construction, fixture or appliance as the result of
investigations and tests conducted by the agency, or
by reason of accepted principles or tests by national
authorities, or technical, health, or scientific
organizations or agencies.
Notes:
1. See Health and Safety Code Section 17920 for
"Approved" as applied to residential
construction and buildings or structures
accessory thereto as referenced in Section 108.2.
2. See Health and Safety Code Section 17921.1 for
"Approved" as applied to the use of the hotplates
in residential construction as referenced in
Section 108.2.
3. See Health and Safety Code Section 17921.3 for
"Approved" as applied to low-flush water closets
in residential construction as referenced in
Section 108.2.
4. See Health and Safety Code 19966 for
"Approved" as applied to Factory-Built Housing
as referenced in Section 108.3.2.5.
5. See Health and Safety Code Section 18201 for
"Approved" as applied to Mobilehome Paries as
referenced in Section 108.2.
6. See Health and Safety Code Section 18862.1 for
"Approved" as applied to Special Occupancy
Parks as referenced in Section 108.2.
Approved Testing Agency - An organization
primarily established for purposes of testing to
approved standards and approved by the Authority
Having Jurisdiction.
[HCD1 & HCD2] "Approved Testing Agency" is any
agency which is determined by the enforcing agency,
except as otherwise provided by statute, to have adequate
personnel and expertise to carry out the testing of systems,
materials, and construction fixtures or appliances.
Area Drain - A receptor designed to collect surface
or storm water from an open area.
Aspirator - A fitting or device supplied with water
or other fluid under positive pressure that passes
tlirough ail integral orifice or constriction, causiiig a
vacuum.
Authority Having Jurisdiction - The organization,
office, or individual responsible for enforcing the
requirements of a code or standard, or for approving
equipment, materials, installatioris, or procedures. Tlie
Aufliority Having JiirisdictionshaUbea federal,-state,—
local, or other regional department or an mdividual
sucli as a plumbiiig official, mechanical official, labor
department official, health department official,
building official, or ofcers having statutory authority.
15
203.0 - 205.0
2007 CALIFORNIA PLUMBING CODE
In the absence of a statutory authority, the Authority
Having Jurisdiction may be some other responsible
party. This definition shall include the Authority
Having Jurisdiction's duly authorized representative.
[HCD1 & HCD2] "Authority Having Jurisdiction" shall
mean "Enforcing Agency" as defined, in Section 107. Q of
this code.
204.0 - B -
Backf low - The flow of water or other liquids,
mixtures, or substances into the distributing pipes of
a potable supply of water from any sources other
than its intended source. See Back-Siphonage, Back-
Pressure Backflow.
Backflow Connection - Any arrangement whereby
backflow can occur.
Back-Pressure Backflow - Backflow due to an
increased pressvire above the supply pressure, which
may be due to pumps, boilers, gravity, or other
sources of pressure.
Backflow Preventer - A device or means to prevent
backflow into the potable water system.
Back-Siphonage - The flowing back of used,
contaminated, or polluted water from a plumbing
fixture or vessel into a water supply pipe due to a
pressure less than atmospheric in such pipe. See
Backflow.
Backwater Valve - A device installed in a drainage
system to prevent reverse flow.
Bathroom - A room equipped with a shower or
bathtub.
Battery of Fixtures - Any group of two (2) or more
similar, adjacent fixtures that discharge into a
common horizontal waste or soil branch.
Boiler Blowoff - An outlet on a boiler to permit
emptying or discharge of sediment.
Branch - Any part of the piping system other than a
main, riser, or stack.
Branch, Fixture - See Fixture Branch.
Branch, Horizontal - See Horizontal Branch.
Branch Vent - A vent connecting one or more
individual vents with a vent stack or stack vent.
Building - A structure built, erected, and framed of
component structural parts designed for the housing,
shelter, enclosure, or support of persons, animals, or
property of any kind.
Exceptions: [HCD1 & HCD2] "BUILDING" shall
not include the folloioing:
1. Any mohilehome as defined in Health and Safety
Code Section 18008.
2. Any manufactured home as defined in Health
and Safety Code Section 18007.
3. Any commercial modular as defined in Health
and Safety Code Section 18001.8 or any special
purpose commercial modular as defined in
Section 18012.5.
4. Any recreational vehicle as defined in Section
Health and Safety Code 18010.
5. Any multi-unit manufactured housing as
defined in Section Health and Safety Code
18008.7.
For additional information, see Health and
Safety Code Section 18908.
Building Drain - That part of the lowest piping of a
drainage system that receives the discharge from
soU, waste, and other drainage pipes inside the walls
of the building and conveys it to the building sewer
beginning two (2) feet (610 mm) outside the building
wall.
Building Drain (Sanitary) - A building drain that
conveys sewage only.
Building Drain (Storm) - A building drain that
conveys storm water or other drainage, but no
sewage.
Building Sewer - That part of the horizontal piping
of a drainage system that extends fiom the end of the
building drain and that receives the discharge of the
building drain and conveys it to a public sewer,
private sewer, private sewage disposal system, or
other point of disposal.
Building Sewer (Combined) - A building sewer
that conveys both sewage and storm water or other
drainage.
Building Sewer (Sanitary) - A buUding sewer that
conveys sewage only.
Building Sewer (Storm) - A building sewer that
conveys storm water or other drainage, but no
sewage.
Building Subdrain - That portion of a drainage
system that does not drain by gravity into the
building sewer.
Building Supply - The pipe carrjnng potable water
from the water meter or other source of water supply
to a biiQding or other point of use or distribution on
the lot. Btiilding supply shall also mean water service.
205.0 - C -
Certified Backflow Assembly Tester - A person
who has shown competence to test and maintain
backflow assemblies to the satisfaction of the
Authority Having Jurisdiction.
Cesspool - A lined excavation in the ground that
receives the discharge of a drainage system or part
thereof, so designed as to retain the organic matter
16
DEFINITIONS
205.0 - 206.0
and solids discharging therein, but permitting the
liquids to seep tlirough the bottom and sides.
Chemical Waste - See Special Wastes.
Clarif ier - See Interceptor.
Clear Water Waste - Cooling water and condensate
drainage from refrigeration and air-conditioning
equipment; cooled condensate from steam heating
systems; cooled boiler blowdown water.
Clinic Sinic - A suik designed primarily to receive
wastes from bedpans and having a flush rim, an
integral trap with a visible trap seal, and the game
flushing and cleansuig diaracteristics as a water closet.
Code - A standard tliat is an extensive compilation
of provisions covering broad subject matter or that is
suitable for adoption iiTto law independexitly of other
codes and standards.
Combination Tliermostatic/Pressure Balancing
Valve - A mixing valve that senses outlet tempera-
ture and incoming hot and cold water pressure and
compensates for fluctuations in incoming hot a,nd
cold water temperatures and/or pressures to
stabilize outlet temperatures.
Combination Waste and Vent System - A specially
designed system of waste piping embodying the
horizontal wet venting of one or more siiiks or floor
drains by means of a common waste and vent pipe,
adequately sized to provide free movement of air
above the flow line of the drain.
Combined Building Sewer - See Building Sewer
(Combined).
Commissaries Serving Mobile Food Preparation
Units [DHS] - A food establishment in which food,
containers, equipment or supplies are stored or handled for
use in vehicles, mobile food preparation units, food carts or
vending machines.
Common - That part of a plumbing system tliat is so
designed and uistalled as to serve more than one (1)
appliance, fixture, building, or system.
Conductor - A pipe iiiside flie building fliat conveys
storm water from the roof to a storm drain, combined
building sewer, or other approved point of disposal.
Confined Space - A room or space having a volume
less than fifty (50) cubic feet per 1,000 Btu/h (1.4
mV293 W) of the aggregate iiiput rating of all fuel-
burniiig appliances installed in tliat space.
Contamination - An impairment of the quality of
the potable water that creates an actual hazard to tlie
public health through poisoning or through the
spread of disease by sewage, industrial fluids, or
waste. Also defined as High Hazard.
"Continuous Vent --A vertical vent that is a
contiiiuation of the drain to which it connects.
Continuous Waste - A drain connecting the
compartments of a set of fixtures to a trap or
connecting other permitted fixtures to a common trap.
Covered Multifamily Dwelling - [HCD1/AC] See
Section 108.2.1.2.
CPVC - CMorinated Poly (Vinyl Cliloride).
Critical Level - The critical level (C-L or C/L)
marking on a backflow prevention device or vacuum
breaker is a point conformmg to approved standards
and established by the testing laboratory (usually
stamped on the device by the manufacturer) that
determines the minimum elevation above the flood-
level rim of the fixture or receptor served at wliich
the device may be installed. When a backflow
prevention device does not bear a critical level
marking, the bottom of the vacuum breaker,
combination valve, or the bottom of any such
approved device shall constitute the critical level.
Cross-connection - Any connection or
arrangement, physical or otherwise, between a
potable water supply system and any plumbing
fixture or any tank, receptor, equipment, or device,
through which it may be possible for non potable,
used, unclean, polluted, and contaminated water, or
other substances to enter into any part of such
potable water system tinder any condition.
206.0
-D-
Department - [HCD1, HCD2 and HCD1/AC]
"Department" means the Department of Housing and
Community Development.
Department l-laving Jurisdiction - The Authority
Having Jurisdiction, including any other law
enforcement agency affected by any provision of
this code, whetlier such agency is specifically named
or not.
[HCD1 & HCD2J "Department Having Jurisdiction"
shall mean "Enforcing Agency" as defined in Section
207.0 of this code.
Design Flood Elevation - The elevation of the
"design flood," including wave height, relative to the
datum specified on the community's legally
designated flood hazard map.
Developed Lengtii - The length along the center
Une of a pipe and fittings.
Diameter - Unless specifically stated, "diameter" is
the nomiiial diameter as designated commercially.
Domestic Sewage - The liquid and water-borne
wastes derived from the ordinary living processes,
free from industrial wastes, and of such cliaracter as
to permit satisfactory disposal, -without-special—
treatment, into the public sewer or by means of a
private sewage disposal systeiri.,
Downspout - The rain leader from the roof to tiie
building storm drain, combmed building sewer, or
17
206.0 - 209.0
2007 CALIFORNIA PLUMBING CODE
other means of disposal located outside of the
building. See Conductor and Leader.
Drain - Any pipe that carries waste or waterborne
wastes in a building drainage system.
Drainage System - Includes all the piping within
public or private premises that conveys sewage or
other liqtiid wastes to a legal point of disposal, but
does not include the mains of a pUbUc sewer system
or a public sewage treatment or disposal plant.
Durliam System - A soil or waste system in which
all piping is threaded pipe, tubing, or other such
rigid construction, using recessed drainage fittings to
correspond to the types of piping.
207.0
-E-
Effective Opening - The minimum cross-sectional
area at the point of water supply discharge measured
or expressed in terms of (1) diameter of a circle or (2)
if the opening is not circtilar, the diameter of a circle
of equivalent cross-sectional area. (This is applicable
also to air gap.)
Enforcing Agency - [HCD1 , HCD2, and HCD1/AC]
"Enforcing Agency" is the designated department or
agency as specified by statute or regidation.
Essentially Nontoxic Transfer Fluid - Essentially
nontoxic at practically nontoxic. Toxicity Rating Class
1 (reference "Clinical Toxicology of Commercial
Products" by Gossehn, Smith, Hodge, & Braddock).
Excess Flow Valve - A valve designed to close
when the fuel gas passing through exceeds a
prescribed flow rate.
Existing Worl< - A plumbing system or any part
thereof that has been installed prior to the effective
date of this code.
208.0 - F -
Fixture Branch - A water supply pipe between the
fixture supply pipe and the water distributing pipe.
Fixture Drain - The drain from the trap of a fixture to
the junction of that drain with any other drain pipe.
Fixture Supply - A water supply pipe connecting
the fixture with the fixture branch.
Fixture Unit - A quantity in terms of which the load-
producing effects on the plumbing system of
different kinds of plumbing fixtures are expressed on
some arbitrarily chosen scale.
Flammable Vapor or Fumes is the concentration of
flammable constituents in air that exceeds 25 percent
of its lower flammability limit (LFL).
Flood Hazard Area - The greater of the following
two areas:
1. The area within a floodplain subject to a 1
percent or greater chance of flooding in any
given year.
2. The area designated as a flood hazard area
on a community's flood hazard map, or
otherwise legally designated.
Flood Hazard Area Subject to Hi^h Velocity Wave
Action - Area within the flood hazard area that is
subject to high velocity wave action, and shown on a
Flood Insurance Rate Map or other flood hazard map
as Zone V, VO, VE or Vl-30.
Flood Level - See Flooded.
Flood-Level Rim - The top edge of a receptor from
which water overflows.
Flooded - A fixture is flooded when the liquid
therein rises to the flood-level rim.
Flusli Tank - A tank located above or integral with
water closets, urinals, or similar fixtures for the
purpose of flushing the usable portion of the fixture.
Flush Valve - A valve located at the bottom of a
tank for the purpose of flushing water closets and
similar fixtures.
Flushometer Tank - A tank integrated wiftiin an air
accumulator vessel that is designed to discharge a
predetermined quantity of water to fixtures for
flushing purposes.
Flushometer Valve - A valve that discharges a
predetermined quantity of water to fixtures for
flushing purposes and is actuated by direct water
pressure.
FOG Disposal System - A grease interceptor that
reduces nonpetroleum fats, oUs, and grease (FOG) in
effluent by separation, and mass and volume
reduction.
Food Establishment [DHS] - Any room, building,
place or portion thereof, maintained, used or operated for
purpose of storing, preparing, serving, packaging,
transporting, salvaging or othenuise handling food at the
retail level.
209.0
-G-
Gang or Group Shower - Two or more showers in a
common area.
Grade - The slope or fall of a line of pipe in reference
to a horizontal plane. In drainage, it is usually
expressed as the fall in a fraction of an inch (mm) or
percentage slope per foot (meter) length of pipe.
Gravity Grease Interceptor - A plumbing
appurtenance or appliance that is installed in a sanitary
drainage systerh to intercept nonpetroleimi fats, oils,
and greases (FOG) from a wastewater discharge and is
18
DEFINITIONS
209.0-211.0
identified by volume, 30-ininute retention time,
baffle(s), a minimum of two compartments, a
minimum total volume of 300 gallons, and gravity
separation. [These interceptors comply with the
requirements of Chapter 10 or are designed by a
registered professional engineer.] Gravity grease
interceptors are generally installed outside.
Grease Interceptor - A plumbing appurtenance or
appliance that is installed in a sanitary drainage
system to intercept nonpertroleum fats, oil, and
greases (FOG) from a wastewater discharge.
Grease Removal Device (GRD) - Any hydro-
mechanical grease interceptor that automatically,
mechanically removes non-petroleum fats, oils and
grease (FOG) from the interceptor, the control of
wMch are either automatic or manually initiated.
Grease Trap - A device designed to retain grease from
one (1) to a maximum of four (4) fixtures. Tliis term has
been used m previous editions of this code, Refer to
Hydromechanical Grease Interceptor and Gravity
Grease Interceptor, GRD, and FOG disposal system.
210.0
-H-
Handwashing Fixture [For OSHPD 1, 2, 3 &4] is a
special application sink having a water supply spout
mounted so the discharge point is at least 5 indies (127
mm) above the fixture rim and equipped with hot and cold
supply controls not requiring direct contact of the hands
for operation. The fixture can not he equipped with an
aerator and wrist or elbow blade handles. Sensor operated
fixtures may he used, provided they are either battery
operated or connected to the essential electrical system.
Hangers - See Supports.
High Hazard - See Contamination.
Horizontal Branch - A drain pipe extending
laterally from a soil or waste stack or building drain
with or without vertical sections or branches, which
receives the discharge from one or more fixture
draii-\s and conducts it to the soil or waste stack or to
the building drain.
Horizontal Pipe - Any pipe or fitting tliat is itistalled
ill a horizontal position or wMch makes an angle of
less than forty-five (45) degrees with the horizontal.
Hot Water - Water at a temperature greater than or
equal to 120°F (49°C).
House Drain - See Building Drain.
"House Sewer -See Bilildirig Sewer."
Hydromechanical Grease Interceptor - A
plumbing appurtenance or appliance tliat is installed
in a sanitary drainage system to intercept
nonpetroleum fats, oil, and grease (FOG) from a
wastewater discharge and is identified by flow rate,
and separation and retention efficiency. The desigiT
incorporates air entrainment, hydromechanical
separation, interior baffling, and/or barriers in
combination or separately, and one of the followmg:
A - External flow control, witli air intake (vent):
directly connected
B - External flow control, witliout air intake
(vent): directly connected
C - Without external flow control, directly
connected
D - Without external flow control, itidirectly
connected
[These interceptors comply with tlie requirements of
Table 10-2.] Hydromechanical grease interceptors
are generally installed inside.
211.0
-I
Indirect Waste Pipe - A pipe that does not connect
directly with tlie drainage system but conveys liquid
wastes by discharging into a plumbing fixture,
interceptor, or receptacle that is directly connected to
the drainage system.
Individual Vent - A pipe installed to vent a fixture
trap and that coimects with the vent system above
tlie fixture served or terminates in the open air.
Industrial Waste - Any and all liquid or water-
borne waste from industrial or commercial
processes, except domestic sewage.
Insanitary - A condition that is contrary to sanitary
principles or is uijurious to health.
Conditions to which "insanitary" shall apply
UTclude tlie following:
(1) Any trap that does not maintain a proper
trap seal.
(2) Any opening in a drainage system, except
where lawful, tliat is not provided with an
approved water-sealed trap.
(3) Any plumbing fixture or other waste-
discharging receptor or device that is not
supplied with water sufficient to flush and
maintain the fixture or receptor in a clean
condition.
(4) Any defective fixture, trap, pipe, or fitting.
(5) Any trap, except where in this code
exempted, directlycomiectedHroa drainage-
system, the seal of which is not protected
against siphonage and back-pressure by a
vent pipe.
(6) Any connection, CTOss-connection, construction.
19
211.0-214.0
2007 CALIFORNIA PLUMBING CODE
or condition, temporary or permanent, that
would permit or make possible by any means
whatsoever for any unapproved foreign
matter to enter a water distribution system
used for domestic purposes.
(7) The foregoing enxnneration of conditions to
which the term "insanitary" shall apply
shall not preclude the application of that
term to conditions that are, in fact, insanitary.
Interceptor (Clarifier) - A device designed and
installed so as to separate and retain deleterious,
hazardous, or undesirable matter from normal
wastes and permit normal sewage or liquid wastes to
discharge into the disposal terminal by gravity.
Invert - The lowest portion of the inside of a
horizontal pipe.
212.0 -J-
Joint, Brazed - Any joint obtained by joining of
metal parts with alloys that melt at temperatures
higher than 840°F (449°C), but lower than the
melting temperature of the parts to be joined.
Joint, Soldered - A joint obtained by the joining of
metal parts with metalUc mixtures or alloys that melt at
a temperature up to and including 840°F (449°C).
213.0
No definitions
214.0
-K-
-L-
Labeled - Equipment or materials bearing a label of
a listing agency (accredited conformity assessment
body). See Listed (third-party certified).
[HCD1 & HCD2]" Labeled" means equipment or
materials to which has been attached a label, symbol or
other identifying mark of an organization, approved by the
Department, that maintains a periodic inspection program
of production of labeled products, installations,
equipment, or materials and by whose labeling the
manufacturer indicates compliance with appropriate
standards or performance in a specified manner.
Lavatories in Sets - Two (2) or three (3) lavatories
that are served by one (1) trap.
Lavatory - [HCD1 & HCD2] "Lavatory shall mean a
plumbing fixture used for washing the hands, arms, face
and head.
Leader - An exterior vertical drainage pipe for
conveying storm water from roof or gutter drains.
See Downspout.
Limited-density Owner-built Dweiling - [HCD1]
"Limited-density Ovmer-built Dwelling" shall mean any
structure consisting of one or more habitable rooms
intended or designed to be occupied by one family with
facilities for living or sleeping, with use restricted to rural
areas designated by local jurisdiction in compliance with
the requirements of Health and Safety Code Section
17958.2.
Liquid Waste - The discharge from any fixture,
appliance, or appurtenance in cormection with a
plumbing system that does not receive fecal matter.
Listed -[HCD 1 & HCD 2] "Listed" means all products
that appear in a list published by an approved testing or
listing agency. For additional information, see Health and
Safety Code Section 17920(h).
Listed (Tliird-party certified) - Equipment or
materials included in a list published by a listing
agency (accredited conformity assessment body) that
maintains periodic inspection on cvirrent production
of listed equipment or materials and whose listing
states either that the equipment or material complies
with approved standards or has been tested and
found suitable for use in a specified manner.
Listing Agency - An agency accredited by an
independent and authoritative conformity
assessment body to operate a material and product
listing and labeling (certification) system and that is
accepted by the Authority Having Jurisdiction,
which is in the business of listing or labeling. The
system includes initial and ongoing product testing,
a periodic inspection on current production of listed
(certified) products, and makes available a published
report of such listing in which specific information is
included that the material or product conforms to
applicable standards and found safe for use in a
specific manner.
[HCD 1 & HCD 2] "Listing Agency" means an agency
approved by the department that is in the business of
listing and labeling products, materials, equipment, and
installations tested by an approved testing agency, and
that maintains a periodic inspection program on current
production of listed products, equipment, and
installations, and that, at least annually, makes available a
published report of these listings. For additional
information, see Health and Safety Code Section 17920(i).
Lot - A single or individual parcel or area of land
legally recorded or validated by other means
acceptable to the Authority Having Jiirisdiction on
which is situated a building or which is the site of
any work regulated by this code, together with the
yards, courts, and unoccupied spaces legally
required for the building or works, and that is
owned by or is in the lawful possession of the owner
of the building or works.
Low Hazard - See Pollution.
20
DEFINITIONS
214.0-218.0
Low VOC Cement - [HCD 1 & HCD 2/ Cement with
a volatile organic compound (VOC) content of less
than or equal to 490 g/L for CPVC Cement, 510 g/L
for PVC Cement, and 325 g/L for ABS Cement, as
determined by the South Coast Air Quality
Management District's Laboratory Methods of
Analysis for Enforcement Samples, Method 316A.
Low VOC One-Step Cement - [HCD 1 & HCD 2]
Listed solvent cements that do not require the use of
primer with a volatile organic compound (VOC) content
of less than or equal to 490 b/Lfor CPVC Cement, 510 g/L
for PVC Cement, and 325 g/L for ABS Cement, as
determined by the South Coast Air Quality Management
District's Laboratory Methods of Analysis for
Enforcement Samples, Method 316A.
Low VOC Primer- [HCD 1 & HCD 2] Primer with a
volatile organic compound (VOC) content of less tlian or
equal to 550 g/L, as detrmined by the South Coast Air
Quality Management District's Laboratory Methods of
Analysis for Enforcement Samples, Method 316A.
[HCD 1 & HCD 2] "Nuisance" shall mean any nuisance
as defined in Health and Safety Code Section 17920(k).
Notes:
1. For applications subject to the Mobilehome Paries
Act as referenced in Section 108.3.2.2 of this
code, refer to California Code of Regulations,
Title 25, Division 1, Chapter 2 for the definition
of "Nuisance" .
2. Tor applications subject to the Special Occupancy
Parks Act as referenced in Section 108.3.2.3 of
this code, refer to California Code of Regulations,
Title 25, Division 1, Chapter 2.2 for the
definition of "Nuisance".
217.0 -O-
Offset - A combination of elbows or bends in a line
of piping that brings one section of the pipe out of
line but into a line parallel with the other section.
Oil Interceptor - See Interceptor.
218.0
-P-
215.0
M-
Macerating Toilet System - A system comprised of
a sump with macerating pump and with connections
for a water closet and other plumbing fixtures, wliicli
is designed to accept, grind, and pump wastes to an
approved point of discharge.
Main - The principal artery of any system of continuous
piping to whidi brandies maybe connected.
IVIain Sewer - See Public Sewer.
Main Vent - The principal artery of the venting
system to whidi vent branches may be coraiected.
May - A permissive term.
Mobile Home Park Sewer - That part of the
horizontal piping of a drainage system that begins
two (2) feet (610 mm) downstream from the last
mobile home site and conveys it to a public sewer,
private sewer, private sewage disposal system, or
otlier point of disposal.
216.0 -N-
Nuisance - hicludes, but is not limited to:
(1) Any pubHc nuisance known at common law
or in equity jurisprudence.
- — -(i) -Whenever any work regulated by this code
is dangerous to human life or is detrimental
to health and property.
(3) Inadequate or unsafe water supply or
sewage disposal system.
PB - Polybutylene.
PE - Polyethylene.
PE-AL-PE - Polyetliylene-aluminum-polyethylene.
PEX - Cross-linked polyetliylene.
PEX-AL-PEX - Cross-linked polyethylene—
aluminum-cross-linked polyethylene.
Person - A natural person, his heirs, executor,
administrators, or assigns and shall also include a
firm, corporation, municipal or quasi-municipal
corporation, or governmental agency. Singular
includes plural, male includes female.
Pipe - A cylindrical conduit or conductor
conforming to tlie particular dimensions commonly
known as "pipe size."
Plumbing - The business, trade, or work having to
do with the installation, removal, alteration, or repair
of plumbing systems or parts thereof.
Plumbing Appliance - Any one of a special class of
devices or equipment that is mtended to perform a
special plumbing function. Its operation and/or
control may be dependent upon one or more
energized components, such as inotors, controls,
heating elements, or pressure- or temperature-
sensing elements. Such device or equipment may
operate automatically through one or more of the
"following-actions: a time cycle, atemperature-range^-
a pressure range, a measured volume or weight; or
the device or equipment may be manually adjusted
or controlled by the user or operator.
Plumbing Appurtenance - A manufactured device.
21
218.0-220.0
2007 CALIFORNIA PLUMBING CODE
a prefabricated assembly, or an on-the-job assembly
of component parts that is an adjimct to the basic
piping system and plumbing fixtures. An
appurtenance demands no additional water supply,
nor does it add any discharge load to a fixture or the
drainage system. It performs some useful function in
the operation, maintenance, servicing, economy, or
safety of the plumbing system.
Plumbing Fixture - An approved-type installed
receptacle, device, or appliance that is supplied with
water or that receives liquid or Liquid-borne wastes
and discharges such wastes into the drainage system
to which it may be directly or indirectly connected.
Industrial or commercial tanks, vats, and similar
processing equipment are not plumbing fixtures, but
may be connected to or discharged into approved
traps or plumbing fixtures when and as otherwise
provided for elsewhere in this code.
Plumbing Official - See Authority Having
Jurisdiction.
Plumbing System - Includes all potable water,
building supply, and distribution pipes; all
plumbing fixtures and traps; aU drainage and vent
pipes; and all building drains and building sewers,
including their respective joints and connections,
devices, receptors, and appurtenances within the
property lines of the premises and shall include
potable water piping, potable water treating or using
equipment, medical gas and medical vacuum
systems, liquid and fuel gas piping, and water
heaters and vents for same.
Pollution - An impairment of the quality of the
potable water to a degree that does not create a
hazard to the public health but which does adversely
and unreasonably affect the aesthetic qualities of
such potable water for domestic use. Also defined as
Low Hazard.
Potable Water - Water that is satisfactory for
drinking, culinary, and domestic purposes and that
meets the requirements of the Health Authority
Having Jurisdiction.
PP - Pol3q3ropylene.
Pressure - The normal force exerted by a
homogeneous liqtdd or gas, per unit of area, on the
wall of the container.
(1) Static Pressure - The pressure existing
without any flow.
(2) Residual Pressure - The pressure available
at the fixture or water outlet after allowance
is made for pressure drop due to friction
loss, head, meter, and other losses in the
system dturing maximum demand periods.
Pressure-Balancing Valve - A mixing valve that
senses incoming hot and cold water pressures and
compensates for fluctuations in either to stabilize
outlet temperature.
Private or Private Use - Applies to plumbing
fixtures in residences and apartments, to private
bathrooms in hotels and hospitals, and to restrooms
in commercial establishments where the fixtures are
intended for the use of a family or an individual.
Private Sewage Disposal System - A septic tank
with the effluent discharging into a subsurface
disposal field, into one or more seepage pits, or into
a combination of subsurface disposal field and
seepage pit or of such other facilities as may be
permitted xmder the procedures set forth elsewhere
in this code.
Private Sewer - A building sewer that receives the
discharge from more than one (1) building drain and
conveys it to a public sewer, private sewage disposal
system, or other point of disposal.
Public or Public Use - All buildings or sfaructures
that are not defined as private or private use.
Public Sewer - A common sewer directly controlled
by public authority.
PVC - Poly (vinyl chloride).
PVDF - Polyvinylidene Fluoride. I
219.0
No definitions.
-Q-
220.0 - R -
Receptor - An approved plumbing fixture or device
of such material, shape, and capacity as to
adequately receive the discharge from indirect waste
pipes, so constructed and located as to be readily
cleaned.
Regulating Equipment - Includes all valves and
controls used in a pltimbing system that are required
to be accessible or readUy accessible.
Relief Vent - A vent, the primary function of which
is to provide circulation of air between drainage and
vent systems or to act as an auxiliary vent on a
specially designed system.
Remote Outlet - When used for sizing water piping,
it is the furthest outlet dimension, measuring from
the meter, either the developed length of the cold-
water piping or through the water heater to the
furthest outlet on the hot-water piping.
Rim - See Flood-Level Rim.
Riser - A water supply pipe that extends vertically
one (1) full story or more to convey water to
branches or fixtiures.
22
DEFINITIONS
220.0 - 222.0
Roof Drain - A drain installed to receive water
collecting on the surface of a roof and to discharge it
into a leader, downspout, or conductor.
Roughing-ln - The installation of all parts of the
plumbing system that can be completed prior to the
installation of fixtures. TWs includes drainage, water
supply, gas piping, vent piping, and the necessary
fixture supports.
221.0
-S-
Sand Interceptor - See Interceptor.
SDR - An abbreviation for "standard dimensional
ratio," which is the specific ratio of the average
specified outside diameter to the minimum wall
thickness for outside controlled diameter plastic
pipe-:
Seepage Pit - A lined excavation in the ground
which receives the discharge of a septic tank so
designed as to perinit the effluent from the septic
tank to seep tlirough its bottom and sides.
Septic Tanic - A watertight receptacle that receives
the discharge of a drainage system or part thereof,
designed and constructed so as to retain solids,
digest organic matter tlirough a period of detention,
and allow the liquids to discharge into the soil
outside of the tank through a system of open joint
piping or a seepage pit meeting Hxe requirements of
this code.
Sewage - Any liquid waste containing animal or
vegetable matter in suspension or solution and that
may include liquids containing chemicals in solution.
Sewage Ejector - A device for lifting sewage by
entraining it on a high-velocity jet stream, air, or
water.
Sewage Pump - A permanently installed
mechanical device, other than an ejector, for
removing sewage or Hquid waste from a sump.
Scrub Sink [For OSHPD 1, 2, 3, & 4] is a sink used to
wash and scrub the hands and arms during the a septic
preparation for surgery and equipped with a supply spout
and controls as required for a handwashing fixture.
Sliall - Indicates a mandatory requirement.
Shielded Coupling - An approved elastomeric
sealing gasket with an approved outer sliield and a
tightening mechanism.
Shock Arrester - See Water Hammer Arrester.
Should - Indicates a recommendation or that which
^s advised butTiot required.
Single-Family Dwelling - A building designed to be
used as a home by the owner of such building, wliich
shall be the only dwelling located on a parcel of
ground with the usual accessory buildii-igs.
Size and Type of Tubing - See Diameter.
Slip Joint - An adjustable tubing connection,
consisting of a compression nut, a friction ring, and a
compression washer, designed to fit a threaded
adapter fitting or a standard taper pipe thread.
Slope - See Grade.
Soil Pipe - Any pipe that conveys the discharge of
water closets, urinals, clinic sinks, or fixtures
having similar functions of collection and removal
of domestic sewage, with or without the discharge
from other fixtures, to the building drain or
building sewer.
Special Wastes - Wastes that require some special
metliod of handling, such as the use of indirect waste
piping and receptors, corrosion-resistant piping,
sand, oil or grease interceptors, condensers, or other
pretreatanent facilities.
Stack - The vertical main of a system of soil,
waste, or vent piping exteiiding through one or
more stories.
Stack Vent - The extension of a soil or waste stack
above the highest horizontal drain connected to
the stack.
Standard - A document, the main text of which
contains only mandatory provisions using the
word "shall" to indicate requirements and which is
in a form generally suitable for mandatory
reference by another standard or code or for
adoption into law. Nonmandatory provisions shall
be located in an appendix, footnote, or fine print
note and are not to be considered a part of the
requirements of a standard.
Storm Drain - See BuHdiiig Drain (Storm).
Storm Sewer - A sewer used for conveying
rainwater, surface water, condensate, cooling water,
or similar liquid wastes.
Subsoil Drain - A drain that collects subsm-face or
seepage water and coxiveys it to a place of disposal.
Sump - An approved tank or pit that receives
sewage or liquid waste and which is located below
the normal grade of the gravity system and which
must be emptied by mechanical means.
Supports - Supports, hangers, and anchors are
devices for properly supporting and securmg pipe,
fixtures, and equipment.
222.0
-T-
LTailpiece---Thg_pipeiDrJubingjthM_corm^
outlet of a plumbirxg fixture to a trap.
Testing Agency - [HCD 1 & HCD 2] See "Approved
Testing Agency".
Thermostatic (Temperature Control) Valve - A
23
222.0 - 225.0
2007 CALIFORNIA PLUMBING CODE
mixing valve that senses outlet temperature and
compensates for fluctuations in incoming hot or cold
water temperatures.
Toilet [For OSHPD 1, 2, 3 & 4] A fixture within a
toilet room which is used for defection or urination.
Toilet Room [For OSHPD 1,2, 3 & 4] A room within
or on the premises containing water closets, urinals, and
other required facilities.
Trap - A fitting or device so designed and
constructed as to provide, when properly vented, a
liquid seal that wUl prevent the back passage of air
without materially affecting the flow of sewage or
wastewater through it.
Trap Arm - That portion of a fixture drain between a
trap and the vent.
Trap Primer - A device and system of piping that
maintains a water seal in a remote trap.
Trap Seal - The vertical distance between the crown
weir and the top dip of the trap.
Crown Weir (Trap Weir) -The lowest point in
the cross-section of the horizontal waterway at
the exit of the trap.
Top Dip (of trap) - The highest point in the
internal cross-section of the trap at the lowest
part of the bend (inverted siphon). By contrast,
the bottom dip is the lowest point in the internal
cross-section.
223.0
-U-
Unconfined Space - A room or space having a
volume equal to at least 50 cubic feet per 1,000 Btu/h
(1.4 mV293 W) of the aggregate input rating of all
fuel-burning appliances installed in that space.
Rooms communicating directly with the space in
which the appliances are iastalled, through openings
not furnished with doors, are considered a part of
the unconfined space.
Unsanitary - See Insanitary.
UPC - [HCD 1 & HCD 2, SFM, DHS] "UPC" is the
latest edition of the Uniform Plumbing Code, -published by
the International Association of Plumbing and Mechanical
Officials.
224.0 -V-
Vacuum - Any pressure less than that exerted by the
atmosphere.
Vacuum Breai<er - See Backflow Preventer.
Vacuum Reiief Vaive - A device that prevents
excessive vacuum in a presstire vessel.
Vent - Any pipe provided to ventilate a plumbing
system, to prevent trap siphonage and back-
pressure, or to equalize the air pressure within the
drainage system.
Vent Pipe - See Vent.
Vent Stacl< - The vertical vent pipe installed
primarily for the purpose of providing circulation of
air to and from any part of the drainage system.
Vent System - A pipe or pipes installed to provide a
flow of air to or from a drainage system or to
provide a circulation of air within such system to
protect trap seals from siphonage and back-pressure.
Vented Flow Control Device - A device installed
upstream from the hydromechanical grease
interceptor having an orifice that controls the rate of
flow through the interceptor, and an air intake (vent)
downstream from the orifice, which allows air to be
drawn into the flow stream.
Vertical Pipe - Any pipe or fitting that is installed in
a vertical position or that makes an angle of not more
than forty-five (45) degrees with the vertical.
225.0
-W-
Wall-Hung Water Closet - A water closet installed
in such a way that no part of the water closet touches
the floor.
Waste - See Liquid Waste and Industrial Waste.
Waste Pipe - A pipe that conveys only liquid waste,
free of fecal matter.
Water-Closet -[HCD 1 & HCD 2] "Water Closet" is a
plumbing fixture (which may be used for both solids and
liquids) in which the waste matter is removed by flushing
with water.
Water-Conditioning or Treating Device - A device
that conditions or treats a water supply so as to
change its chemical content or remove suspended
solids by filtration.
Water-Distributing Pipe - In a building or premises,
a pipe that conveys potable water from the building
supply pipe to the plumbing fixtures and other
water outlets.
Water Hammer Arrester - A device to absorb
hydraulic shock, either of the air chamber or
mechanical device design.
Water Main (Street Main) - A water supply pipe for
public or commxmity use.
Water Supply System - The building supply pipe,
the water-distributing pipes, and the necessary
connecting pipes, fittings, control valves, backflow
prevention devices, and all appurtenances carrjdng
24
DEFINITIONS 225.0-228.0
or supplying potable water in or adjacent to the
building or premises.
Welded Joint or Seam -Any joint or seam obtained
by the joining of metal parts in the plastic molten
state.
Welder, Pipe - A person who specializes in the
welding of pipes and holds a valid certificate of
competency from a recognized testing laboratory,
based on the requirements of the ASME Boiler and
Pressure Vessels code, Section IX.
Wet Vent - A vent that also serves as a drain.
Whirlpool Bathtub - A bathtub fixture equipped
and fitted witli a circulating pipuig system designed
to accept, circulate, and discharge bathtub water
upon each use.
226.0 -X-
No definitions.
227.0 -Y-
Yoke Vent - A pipe connecting upward from a soil
or waste stack to a vent stack for the purpose of
preventing pressure changes in tlie stacks.
228.0 -Z-
No definitioris.
25
2007 CALIFORNIA PLUMBING CODE
26
CHAPTER 3
GENERAL REGULATIONS
301.0 Materials - Standards and Alternates.
301.1 Minimum Standards.
301.1.1 Approvals. All pipe, pipe fittings,
traps, fixtures, inaterial, and devices used iii a
plumbing system shall be listed or labeled
(third-party certified) by a listing agency
(accredited conformity assessment body) and
shall conform to approved applicable recognized
standards referenced in this code, and shall be
free from defects. Unless otherwise provided for
in this code, all materials, fixtures, or devices
used or entering into the construction of
plumbing systems, or parts thereof, shall be
i submitted to the Authority HaviiTg Jurisdiction
for approval.
301.1.2 Marking. Each length of pipe and each
pipe fitting, trap, fixture, material, and device
used in a plumbing system shall have cast,
stamped, or iiidelibly marked on it the
manufactm-er's mark or name, wliicli shall readUy
identify tlie manufactm-er to tlie end user of tlie
product when such marking is required by the
approved standard that applies. Wlien required
by the approved standard that applies, the
product shall be marked with flie weight arid tlie
quality of the product. AH materials and devices
used or entering into tlie construction of plumbing
and drainage systems, or parts thereof, shall be
marked and identified in a manner satisfactory to
the Authority Having Jurisdiction. All such
marking shall be done by the manufacturer. Field
marking shall not be acceptable.
301 .1 .3 Standards. Standards Hsted or referred
to in this chapter or other chapters cover
materials that will conform to the requirements
of tWs code, when used in accordance with the
limitations imposed in this or other chapters
thereof and their listing. Where a standard
covers materials of various grades, weights,
quality, or configurations, there may be only a
portion of the listed standard that is applicable.
Design and materials for special conditions or
materials not provided for herein may be used
only by special permission of the Authority
j^-_Having Jurisdiction after the Authority Having
Jurisdiction has been satisfied as to their
adequacy. A list of accepted plumbing materials
standards is included in Table 14-1. All lAPMO
Installation Standards are mcluded in Appendix
I for tlie convenience of the users of tliis code.
They are not considered as a part of this code
unless formally adopted as such by the
Authority Having Juiisdiction.
301.1.4 Existing Buildings. In existing builduigs
or premises in wliicli plumbing installations are
to be altered, repaired, or renovated, the
Autliority Having Jurisdiction has discretionary
powers to permit deviation from the provisions
of this code, provided that such a proposal to
deviate is first submitted for proper determi-
nation m order that health and safety require-
ments, as they pertain to plumbing, shall be
obsei'ved.
301.2 Alternate Materials and Methods of
Construction Equivalency. Nothing in tliis code is
intended to prevent the use of systems, methods, or
devices of equivalent or superior quality, strength, fire
resistance, effectiveness, durability, and safety over
those prescribed by tliis code. Teclinical documentation
sliall be submitted to tlie Autliority Having Jurisdiction
to demonstrate equivalency. The Authority Having
Jurisdiction sliaU approve tlie system, metliod, or device
when detennined to be equivalent or superior. [HCD 1
& HCD 2] See Section 108.7.
However, the exercise of this discretionary
approval by the Authority Having Jurisdiction sliaU
have no effect beyond the jurisdictional boundaries
of said Authority Having Jurisdiction. Any alternate
material or method of construction so approved shall
not be considered as conforming to the requirements
and/or intent of this code for any purpose other tiiaii
that granted by the Authority Having Jurisdiction
when the submitted data does not prove equivalency.
301 .2.1 Testing. The Authority Having Jurisdic-
tion shall have the autiiority to require tests, as
proof of equivalency.
301.2.1.1 Tests shall be made in accordance
with approved standards, by an approved
testing agency at flie expense of tlie appHcant.
In the absence of such standards, the
Autliority Having Juiisdiction shall have flie
authority specify the test procedure.
301 .2.1 .2 Tlie Authority Havmg Jurisdiction
-- — - shallJiaveJlie_authorityjQjrequireiests_toj5:e::
L
made or repeated if, at any time, there is
reason to believe fliat any material or device
no longer conforms to the requirements on
wliicli its approval was based.
I
27
301.3-304.0
2007 CALIFORNIA PLUMBING CODE
301 .3 Flood Hazard Resistance.
301.3.1 General. Plumbing systems shall be
located above the design flood elevation.
Exception: Plumbing systems are permitted
to be located below the design flood
elevation provided that the systems are
designed and installed to prevent water from
entering or accumulating within their
components and the systems are constructed
to resist hydrostatic and hydrodynamic
loads and stresses, including the effects of
buoyancy, during the occurrence of flooding
to the design flood elevation.
301 .3.2 Flood Hazard Areas Subject to High-
Velocity Wave Action. Plumbing systems in
buildings located in flood hazard areas subject to
high-velocity wave action shall meet the
requirements of Section 301.3.1, and the
plumbing systems, pipes, and fixtures shaU not
be mounted on or penetrate through walls that
are intended to breakaway under flood loads as
required by the btulding code.
301.4 Alternative Engineered Design.
301.4.1 Design Criteria. An alternative
engineered design shall conform to the intent of
the provisions of this code and shall provide an
equivalent level of quality, strength, effective-
ness, fire resistance, durability, and safety.
Material, equipment, or components shall be
designed and installed in accordance with the
manufacturer's installation instructions.
301.4.2 Permit Application. The registered
professional engineer shall indicate on the design
documents that the plumbing system, or parts
thereof, is an alternative engineered design so
that it is noted on the construction permit
application. The permit and permanent permit
records shall indicate that an alternative
engineered design was part of the approved
installation.
301.4.3 Technical Data. The registered
professional engineer shall submit sufficient
technical data to substantiate the proposed
alternative engineered design and to prove that
the performance meets the intent of this code.
301.4.4 Design Documents. The registered
professional engineer shall provide two (2)
complete sets of signed and sealed design
documents for the alternative engineered design
for submittal to the Authority Having Jurisdic-
tion. The design documents shall include floor
plans and a riser diagram of the work. Where
appropriate, the design documents shall indicate
the direction of flow, all pipe sizes, grade of
horizontal piping, loading, and location of
fixtures and appliances.
301 .4.5 Design Approval. Where the Authority
Having Jurisdiction determines that the
alternative engineered design conforms to the
intent of this code, the plumbing system shall be
approved. If the alternative engineered design is
not approved, the Authority Having Jurisdiction
shall notify the registered professional engineer
in writing, stating the reasons therefore.
301.4.6 Inspection and Testing. The alternative
engineered design shall be tested and inspected
in accordance with the submitted testing and
inspection plan and the requirements of this code.
301.5 One- and Two-Family Dwellings. [HCD 1 &
HCD 2] The provisions contained in this code shall not
apply to one and two-family dwelling private sewage
disposal systems and minimum plumbing facilities when
alternate facilities or installations have been approved hy the
local health authority, provided that such alternative
facilities or installations provide substantially equivalent or
greater protection to health and safety.
302.0 Iron Pipe Size (IPS) Pipe.
Iron, steel, brass, and copper pipe shall be standard-
weight iron pipe size (IPS) pipe.
303.0 Disposal of Liquid Waste.
It shall be unlawful for any person to cause, suffer, or
permit the disposal of sewage, human excrement, or
other liquid wastes, in any place or manner, except
through and by means of an approved drainage
system, installed and maintained in accordance with
the provisions of this code.
Exception: [HCD 1] Limited-density owner-built
rural dwellings. A water closet shall not be required
when an alternate system is provided and has been
approved by the local health official. Where an
alternative to the water closet is installed, a system
for the disposal or treatment of graywater shall be
provided to the dwelling. Graywater systems shall be
designed according to water availability, use and
discharge. The design, use and maintenance
standards of such systems shall be the prerogative of
the local health official.
304.0 Connections to Plumbing System Required.
All plumbing fixtures, drains, appurtenances, and
appliances, used to receive or discharge liqxiid wastes
or sewage, shall be connected properly to the drainage
28
GENERAL REGULATIONS
304.0 - 311 .4
system of the building or premises, in accordance
vfiHx tlie requirements of tliis code.
Exception: [HCD 1] Limited-density owner-built
rural dwellings. Wliere conventional plumbing, in all
or in part, is installed within the structure, it shall be
installed in accordance with the provisions of this code.
Alternative materials and methods shall be permitted
provided that the design complies with the intent of the
code, and that such alternatives shall perform to
protect health and safety for the intended purpose.
305.0 Sewers Required.
305.1 Every building in wliich plumbing fixtures are
iListalled shall have a connection to a public or private
sewer except as provided in Section 305.2.
305.2 Wlien a public sewer is not available for use,
drainage piping from buildings and premises shall
be connected to an approved private sewage
disposal system.
305.3 In cities and/or counties where tlae installation
of building sewers is under the jurisdiction of a
department otlier Aan tlie Autliority Havmg Jurisdic-
tion, the provisions of this code relating to building
sewers need not apply.
306.0 Damage to Drainage System or Public Sewer.
306.1 It shall be imlawful for any person to deposit,
by any means whatsoever, into any plumbing fixture,
floor drain, interceptor, sump, receptor, or device,
which is connected to any drainage system, public
sewer, private sewer, septic tank, or cesspool, any
ashes; cinders; solids; rags; inflammable, poisonous,
or explosive liquids or gases; oils; grease; or any
otlier tiling whatsoever that would, or could, cause
damage to the drainage system or pubhc sewer.
306.2 Roofs, inner courts, vent shafts, Ught weUs, or
similar areas having rainwater drain, shall discharge
to the outside of the building or to the gutter and
shall not be connected to the sanitary drainage
system unless first approved by the Authority
Having Jurisdiction.
307.0 Industrial Wastes.
307.1 Wastes detrimental to tlie public sewer system
or detrimental to the functioning of the sewage
treatment plant shall be treated and disposed of as
found necessary and directed by the Authority
Having Jurisdiction.
307.2 Sewage or other waste from a plumbing
system that may be deleterious to surface or
subsurface waters shall not be discharged into the
ground or into any waterway uiiless it has first been
rendered safe by some acceptable form of treatment
as requu-ed by the Authority Having Jurisdiction.
308.0 Location.
308.1 Except as otherwise provided in this code, no
plumbing system, drainage system, building sewer,
private sewage disposal system, or parts thereof
shall be located in any lot other than the lot that is
the site of the building, structure, or premises served
by such facilities.
308.2 No subdivision, sale, or transfer of ownership
of existing property shall be made in such manner
that the area, clearance, and access requirements of
tliis code are decreased.
309.0 Improper Location.
Piping, fixtures, or equipment shall not be so located
as to interfere with the normal use thereof or with
tlie normal operation and use of windows, doors, or
other required facilities.
310.0 Workmansliip.
31 0.1 All design, construction, and workmanship
shall be in conformity with accepted engineering
practices and shall be of such character as to secure
the results sought to be obtained by tliis code.
31 0.2 It is unlawful to conceal cracks, holes, or other
imperfections in materials by welding, brazing, or
soldering or by using therein or thereon any paint,
wax, tar, or otlier leak-sealing or repair agent.
310.3 Burred ends of all pipe and tubing shall be
reamed to the full bore of the pipe or tube, and all
chips shall be removed.
310.4 Installation Practices, Plumbing systems
shall be installed in a manner conforming to this
code, applicable standards, and the manufacturer's
installation instructions, hi instances where the code,
applicable standards, or the manufacturer's
instructions conflict, the more stringent provisions
shall prevail.
311.0 Prohibited Fittings and Practices,
311.1 No double hub fitting, single or double tee
branch, smgle or double tapped tee branch, side inlet
quarter bend, running tliread, band, or saddle shaU
be used as a dramage fitting, except that a double
hub sanitary tapped tee may be used on a vertical
line as a fixture comiection.
311.2 No drainage or vent piping shall be drilled
and tapped for the purpose of making connections
thereto, a:id no cast-iron-soil-pipe shall be threaded. — ;-
31 1 .3 No waste connection shall be made to a closet
bend or stub of a water closet or similar fixture.
31 1 .4 Except as hereinafter provided in Sections 908.0,
29
311.4-313.7
2007 CALIFORNIA PLUMBING CODE
909.0, and 910.0, no vent pipe shall be used as a soil or
waste pipe, nor shall any soil or waste pipe be used as
a vent. Also, single-stack drainage and venting
systems with unvented branch Unes are prohibited.
31 1 .5 No fitting, fixture and piping connection,
appliance, device, or method of installation that
obstructs or retards the flow of water, wastes,
sewage, or air in the drainage or venting systems, in
an amount greater than the normal frictional
resistance to flow, shall be used unless it is indicated
as acceptable in this code or is approved per Section
301.1 of this code. The enlargement of a three (3) inch
(80 mm) closet bend or stub to four (4) inches (100
mm) shall not be considered an obstruction.
311.6 Except for necessary valves, where inter-
membering or mixing of dissimilar metals occurs,
the point of connection shall be confined to exposed
or accessible locations.
31 1 .7 AH valves, pipes, and fittings shall be installed
in correct relationship to the direction of flow.
311.8 Screwed Fittings. Screwed fittings shall be
ABS, cast iron, copper, copper aUoy, malleable iron,
PVC, steel, or other approved materials. Threads
shall be tapped out of solid metal or molded in solid
ABS or PVC.
31 1.9 [For OSHPD 1, 2, 3 &4]- Drainage piping over
operating and delivery rooms, nurseries, food preparation
centers, food-serving facilities, food storage areas, and
other sensitive areas shall he kept to a minimum and shall
not he exposed. Special precautions shall he taken to
protect these areas from possihle leakage from necessary
overhead drainage piping systems. Piping over
switchboards, panel hoards, and motor control centers are
subject to restrictions of the California Electrical Code
where applicable.
311.10 [For OSHPD 1,3 & 4] Floor drains shall not be
installed in operating and delivery roams. Floor drains with
self-priming traps may be installed in cystoscopic rooms.
311.11 [ForSFM] For applications listed in Section 111
regulated by the Office of the State Fire Marshal, plastic
piping shall not be exposed as a portion of the interior
room finish in a hidlding or structure if the piping has a
flame-spread rating exceeding 75 when tested in
accordance with ASTM E 84-77a, "Test for Surface
Burning Characteristics of Bidlding Materials."
311.12 [For OSHPD 1, 2 & 4] Services/Systems
and Utilities. Refer to Section 1224.4.1, California
Building Code.
312.0 Independent Systems.
The drainage system of each new building and of new
work installed in any existing building shall be
separate and independent from that of any other
building, and, when available, every building shall
have an independent connection with a public or
private sewer.
Exception: Where one building stands in the
rear of another building on an interior lot, and
no private sewer is available or can be
constructed to the rear building through an
adjoining court, yard, or driveway, the building
drain from the front building may be extended
to the rear building.
313.0 Protection of Piping, IViateriais, and Structures.
313.1 All piping passing under or through walls
shall be protected from breakage. All piping passing
through or under cinders or other corrosive
materials shall be protected frpm external corrosion
in an approved manner. Approved provisions shall
be made for expansion of hot water piping. Voids
around piping passing through concrete floors on
the ground shall be appropriately sealed.
313.2 All piping in connection with a plumbing
system shall be so installed that piping or
connections will not be subject to undue strains or
stresses, and provisions shall be made for expansion,
contraction, and structural settlement. No plumbing
piping shall be directly embedded in concrete or
masonry. No structural member shall be seriously
weakened or impaired by cutting, notching, or
otherwise, as defined in the Building Code.
313.3 All trenches deeper than the footing of any
btdlding or structure and paralleling the same shall be
at least forty-five (45) degrees (0.79 rad) therefrom, or
as approved per Section 301.1 of this code. |
313.4 No building sewer or other drainage piping or
part thereof, constructed of materials other than
those approved for use under or within a building,
shall be installed under or within two (2) feet (610
mm) of any building or structure, or less than one (1)
foot (305 mm) below the stirface of the groimd.
313.5 Piping subject to corrosion, erosion, or
mechanical damage shall be protected in an
approved manner.
313.6 No water, soil, or waste pipe shall be installed
or permitted outside of a btiilding or in an exterior
wall xmless, where necessary, adequate provision is
made to protect such pipe from freezing.
313.7 All piping penetrations of fire-resistance-rated
walls, partitions, floors, floor/ceiling assemblies,
roof/ceiling assemblies, or shaft enclosures shall be
protected in accordance with the requirements of the
Btiilding Code, lAPMO Installation Standards, and
Chapter 15, "Firestop Protection."
30
GENERAL REGULATIONS
313.8- 315.2
313.8 Waterproofing of Openings. Joints at tlie roof
around pipes, ducts, or other appurtenances shall be
made watertight by the use of lead, copper,
galvanized iron, or other approved flashings or
flashing material. Exterior wall openings shall be
made watertight. Counterflashing shall not restrict
the required internal cross-sectional area of the vent.
313.9 Plastic and copper piping penetrating a
framing members to witliin one (1) inch (25.4 mm) of
the exposed framing shall be protected by steel nail
plates not less than 0.0478 inches (18 gauge) (1.3mm)
in tliickness. Hie steel nail plate shall extend along
the framing member a minimum of 1-1/2 inches
beyond the outside diameter of the pipe or tubing.
Exception: See Section 1211.3.4.
313.10 Sleeves.
313.10.1 Sleeves shall be provided to protect all
piping through concrete and masonry walls and
concrete floors.
Exception; Sleeves shall not be required where
openings are drilled or bored.
313.10.2 Piping through concrete or masonry
walls shall not be subject to any load from
building construction,
313.10.3 In exterior walls, annular space between
sleeves and pipes shall be sealed and made
watertight, as approved by the Aufliority Having
Jurisdiction. Any penetration through fire-
resistive construction shall be in accordance witli
Section 313.7.
313.1 0.4 Any pipe sleeve through a firewall shall
have the space around the pipe completely
sealed with an approved fire-resistive material
in accordaiice with all other codes.
31 3.11 Any structural member weakened or
impaired by cutting, notcliing, or otherwise shaU be
reinforced, repaired, or replaced so as to be left in a
safe structural condition in accordance with the
requirements of tlie BuUding Code.
313.12 Ratproofing.
31 3.1 2.1 Strainer plates on drain uilets shall be
designed and installed so that no opening is
gi-eater tlian one-half (1/2) inch (12.7 mm) in flie
least dimension.
313.12.2 Meter boxes shall be constructed in
such a manner that rats cannot enter a building
by following tlie service pipes from the box into
2_:ljij:he buildings ^ ^
313.12.3 In or on buildings where openings
have been made in walls, floors, or ceilings for
the passage of pipes, such openings shall be
closed and protected by the installation of
approved metal collars securely fastened to the
adjoining structm-e.
313.12.4 Tub waste openings in framed
construction to crawl spaces at or below flie first
floor shall be protected by the installation of
approved metal collars or metal screen securely
fastened to the adjoining structure with no
opening greater than one-half (1/2) inch
(12.7mm) in the least dimension.
314.0 Hangers and Supports.
314.1 Suspended piping shall be supported at
intervals not to exceed those shown in Table 3-2.
314.2 All piping shall be supported in such a
manner as to maintain its alignment and prevent
sagging.
314.3 Piping in the ground shall be laid on a firm
bed for its entire length; where other support is
otherwise provided, it shall be approved per Section
301.0 of tliis code.
314.4 Hangers and anchors shall be of sufficient
strength to support the weight of the pipe and its
contents. Piping shall be isolated from incompatible
materials.
314.5 All piping, fixtures, appliances, and
appurtenances shall be adequately supported in
accordance with this code, the manufacturer's
installation instructions, and as required by the
Authority Having Jurisdiction.
314.6 Hanger rod sizes shall be no smaller than
those shown in Table 3-1.
314.7 All gas piping shall be supported by metal
straps or hooks at intervals not to exceed those
shown in Table 3-2.
TABLE 3-1
Hanger Rod Sizes
Pipe and Tube Size
Rod Size
Inciies
mm
Inciies
mm
1/2-4
12.7-102
3/8
9.5
5-8 .
127-203
1/2
12.7
10-12
254-305
5/8
15.9
315.0 Trenchiing, Excavation;, and Bacl<fili.
315.1 All trenches deeper than the footing of any
_building or structure and paralklm sarne^shall
be at least forty-five (45) degrees (0.79 rad) flierefrom,
or as approved per Section 301.0 of tliis code. |
315.2 Timneling and driving may be done in yards,
courts, or driveways of any building site. Where
31
315.2-316.1
2007 CALIFORNIA PLUMBING CODE
sufficient depth is available to permit, tunnels may
be used between open-cut trenches. Tunnels shall
have a clear height of two (2) feet (610 mm) above
the pipe and shall be limited in length to one-half
(1/2) the depth of the trench, with a maximum
length of eight (8) feet (2438 mm). When pipes are
driven, the drive pipe shall be at least one (1) size
larger than the pipe to be laid.
31 5.3 Open Trenches. AU excavations required to
be made for the installation of a building drainage
system or any part thereof, within the walls of a
building, shall be open trench work and shall be
kept open until the piping has been inspected,
tested, and accepted.
315.4 All excavations shall be completely backfilled
as soon after inspection as practicable. Adequate
precaution shall be taken to ensure proper
compactness Df backfill around piping without
damage to such piping. Trenches shall be backfilled
in thin layers to twelve (12) inches (305 mm) above
the top of the piping with clean earth, which shall
not contain stones, boulders, cinderfill, frozen earth,
construction debris, or other materials that would
damage or break the piping or cause corrosive
action. Mechanical devices such as bulldozers,
graders, etc., may then be used to complete backfill
to grade. Fill shall be properly compacted. Suitable
precautions shall be taken to ensure permanent
stability for pipe laid in filled or made ground.
316.0 Joints and Connections.
316.1 Types of Joints.
316.1.1 Threaded Joints. Threads on iron pipe
size (IPS) pipe and fittings shall be standard
taper pipe threads in accordance with standards
listed in Table 14-1. Threads on tubing shall be
approved t57pes. Threads on plastic pipe shall be
factory cut or molded. Threaded plastic pipe
shall be Schedule 80 minimum wall thickness.
Tubing threads shall conform to fine tubing
thread standards. When a pipe joint material is
used, it shall be applied only on male threads,
and such materials shall be approved types,
insoluble in water and nontoxic. Cleanout plugs
and caps shall be lubricated with water-
insoluble, nonhardening material or tape.
Thread tape or thread lubricants and sealants
specifically intended for use with plastics shall
be used on plastic threads. Conventional pipe
thread compounds, putty, linseed-oil-based
products, and unknown lubricants and sealants
shall not be used on plastic threads.
316.1.2 Wiped Joints. Joints in lead pipe or
fittings or between lead pipe or fittings and brass
or copper pipe, ferrules, solder nipples, or traps
shall be full-wiped joints. Wiped joints shall
have an exposed surface on each side of a joint
not less than three-fourths (3/4) inch (19.1 mm)
and at least as thick as the material being joined.
Wall or floor flange lead- wiped joints shall be
made by using a lead ring or flange placed
behind the joint at the wall or floor. Joints
between lead pipe and cast iron, steel, or
wrought iron shall be made by means of a
caulking ferrule or soldering nipple.
316.1.3 Soidered Joints. Joints in copper
tubing shall be made by the appropriate use of
approved copper or copper alloy fittings.
Surfaces to be joined by soldering shall be
cleaned bright by manual or mechanical means.
The joints shall be properly fluxed with an
approved-type flux and made up with approved
solder. All solder and fluxes shall be
manufactured to approved standards. Solders
and ihxKes with a lead content that exceeds two-
tenths (0.20) of one (1) percent shall be
prohibited in piping systems used to convey
potable water.
316.1.4 Fiared Joints. Flared joints for soft
copper tubing shall be made with fittings
meeting approved standards. The tubing shall
be reamed to the full inside diameter, resized to
rormd, and expanded with a proper flaring tool.
316.1.5 Flexible Compression Factory-
Fabricated Joints. When pipe is joined by
means of flexible compression joints, such
joints shall conform to approved standards
and shall not be considered as slip joints.
316.1.6 Solvent Cement Plastic Pipe Joints.
Plastic pipe and fittings designed to be joined by
solvent cementing shall comply with appropriate
lAPMOInstallation Standards.
ABS pipe and fittings shall be cleaned and
then joined with solvent cement(s).
CPVC pipe and fittings shall be cleaned and
then joined with listed primer(s) and solvent
cement(s).
Exceptions:
(1) Listed solvent cements that do not
require the use of primer shall be
permitted for use with CPVC pipe and
fittings, manufactured in accordance
with ASTM D2846, 1/2 inch through 2
inches in diameter.
(2) [HCD 1 & HCD 2] Low VOC One-Step
Cement that does not require the use of
primer shall he utilized with CPVC pipe
32
GENERAL REGULATIONS
and fittings, manufactured in accordance
with ASTM DZ846, 1/2 inch through 2
inches in diameter.
PVC pipe and fittings shall be cleai-ied and
joined with primer(s) and solvent cement(s).
A solvent cement transition joint between
ABS and PVC building drain or building sewer
shall be made using a listed transition solvent
cement.
[HCD 1 & HCD 2] For appUcations listed in Section
108.2.1 through 108.2.1.3 regulated by the
Department of Housing and Community Develop-
ment, plastic pipe and fittings joined with solvent
cement shall utilize Low-VOC primer(s), if a primer
is required, and Low-VOC solvent cement(s) as
defined in Section 215.
316.1.7 Brazing and Welding. Brazing and
welding shall conform to the applicable
standard(s) in Table 14-1. Only brazing alloys
having a liquid temperature above 1,000 °F shall
be used. All brazing on medical gas systems
shall be performed by certified installers
meeting tlie requirements of ANSI/ASME Boiler
and Pressure Vessel Code, Section IX, Welding
and Brazing Qualifications, or AWS B2.2,
Standard for Brazing Procedure and Perfor-
mance QuaHfications.
316.1.8 [Not permitted for OSHPD 1,2, 3 & 4]
Pressure-Loci<-Type Connection. This is a
mechanical connection that depends on an
internal retention device to prevent pipe or
tubing separation. Connection is made by
inserting tlie pipe or tubing into the fitting to a
prescribed depth.
316.1 .9 [Not permitted for OSHPD 1,2, 3 & 4]
Pressed Fitting. This is a mechanical
comiection for joining copper tubing that uses a
crimping tool to affix the O-ring seal copper or
copper alloy fittmg to the tubing. The tubing
shall be inserted into the fitting, and the crimp
shall be made using the tool recommended by
tlTe manufacturer.
316.2 Special Joints.
316.2.1 Copper Tubing to Screw Pipe Joints.
Joints from copper tubing to tlireaded pipe shall be
made by the use of brass adapter fittings. Tlie joint
between the copper tubing and tlie fitting shall be
a soldered brazed flared, or pressed joint and the
_:_j_eonnection between the threaded pipe and the
fitting shall be made with a standard pipe size
screw joint. Solder shall conform to tlie require-
ments of Section 316.1.3. Brazed joints shall conform
to the requirements of Section 316.1.7. Flared joints
shall conform to tlie requirements of Section 316.1.4.
316.1 -317.0
Pressed joints sliaU conform to the requirements of
316.1.9.
316.2.2 Unions. Approved unions may be used
in drainage piping when accessibly located in
the trap seal or between a fixture and its trap in
the vent system, except underground or m wet
vents, at any point in tlie water supply system,
and in gas piping as permitted by Section
1211.3.2(4).
316.2.3 Plastic Pipe to Other Materials. When
connecting plastic pipe to other types of piping,
only approved types of fittings and adapters
designed for the specific transition intended
shall be used.
316.2.4 Dielectric Unions. [HCD 1 & HCD 2,
DSA/SS, OSHPD 1,2, 3 & 4] Dielectric unions slwll
be used at all points of connection where there is a
dissimilarity of metals.
316.3 Flanged Fixture Connections.
316.3.1 Fixture connections between drainage
pipes and water closets, floor outlet service sinks
and urinals shall be made by means of approved
brass, hard lead, ABS, PVC, or iron, flanges
caulked, soldered, solvent cemented; rubber
compression gaskets; or screwed to flie drainage
pipe. The connection shall be bolted with an
approved gasket, washer, or setting compound
between tlie fixture and the connection. The bottom
of the flange shall be set on an approved firm base.
31 6.3.2 Closet bends or stubs sliaH be cut off so as
to present a smooth surface even with the top of
the closet rmg before rough inspection is called.
316.3.3 WaU-mounted water closet fixtures sliaU
be securely bolted to an approved carrier fitting.
The connecting pipe between the carrier fitting
and the fixture shall be an approved material
and designed to accommodate an adequately
sized gasket. Gasket material shall be neoprene,
felt, or similar approved types.
316.4 Prohibited Joints and Connections.
316.4.1 Drainage System. Any fitting or
connection that has an enlargement, chamber,
or recess with a ledge, shoulder, or reduction of
pipe area that offers an obstruction to flow
tiirough the drain shall be prohibited-
316.4.2 No fitting or connection that offers
abnormal obstruction to flow shall be used. The ,
enlargement of a three (3) inch (80 mm) closet
bend or stub to four (4) inches (100 mm) shall
not be considered an obstruction.
317.0 Increasers and Reducers.
Wliere different sizes of pipes and fittings are to be
connected, flie proper size increasers or reducers or
33
317.0-320.0
2007 CALIFORNIA PLUMBING CODE
reducing fittings shall be used between the two sizes.
Brass or cast-iron body cleanouts shall not be used as
a reducer or adapter from cast-iron drainage pipe to
iron pipe size (IPS) pipe.
318.0 Food-Handling Establishments.
Food or drink shall not be stored, prepared, or
displayed beneath soil or drain pipes, unless those
areas are protected against leakage or condensation
from such pipes reaching the food or drink as
described below. Where building design requires
that soil or drain pipes be located over such areas,
the installation shall be made with the least possible
number of joints and shall be installed so as to
connect to the nearest adeqviately sized vertical stack
with the provisions as follows;
318.1 All openings through floors over such
areas shall be sealed watertight to the floor
construction.
318.2 Floor and shower drains installed above
such areas shall be equipped with integral
seepage pans.
318.3 All other soil or drain pipes shall be of an
approved material as listed in Table 14-1 and Section
701.0. All materials shall conform to established
standards. Cleanouts shall be extended through the
floor construction above.
318.4 Piping subject to operation at temperatures
that will form condensation on the exterior of the
pipe shall be thermally insulated.
318.5 Where pipes are installed in ceilings above
such areas, the ceiling shall be of the removable
type, or shall be provided with access panels in order
to form a ready access for inspection of piping.
319.0 Test Gauges. Tests required by this code,
which are performed utilizing dial gauges, shall be
limited to gauges having the following pressure
graduations or incrementations.
319.1 Required pressure tests of ten (10) psi (69 kPa)
or less shall be performed with gauges of 1/10
potmd (0.7 kPa) incrementation or less.
319.2 Required pressure tests exceeding ten (10)
pounds (69 kPa) but less than one hundred (100)
psi (689 kPa) shall be performed with gauges of
one (1) psi (6.9 kPa) incrementation or less.
319.3 Required pressure tests exceeding one
hundred (100) psi (689 kPa) shaU be performed with
gauges incremented for two (2) percent or less of the
required test presstire.
319.4 Test gauges shall have a pressure range not
greater than twice the test pressure applied.
320.0 [Not permitted for OSHPD 1, 2, 3 & 4]
Medical Gas and Vacuum Systems, All such
piping shall be installed, tested, and verified in
compliance with the appropriate consensus
standards referenced in Chapter 14 and the
requirements of Chapter 13. The Authority Having
Jurisdiction shall require evidence of the competency
of the installers and verifiers.
34
GENERAL REGULATIONS
Table 3-2
TABLE 3-2
Hangers and Supports
Materials
Types of Joints
IHorizontal
Vertical
Cast
Lead and Oakum
Compression Gasl<et
5 feet (1 ,524 mm), except may be
10 feet (3,048 mm) where 10 foot
lengths are Installed ^"'
Every other joint, unless over 4 feet
(1 ,21 9 mm), then support each joint '•'
Base and each floor not to
exceed 15 feet (4,572 mm)
Base and each floor not to
exceed 15 feet (4,572 mm)
Cast-iron Hubless
Shielded Coupling
Every other joint, unless over 4 feet
(1,219 mm), then support each joint'
Base and each floor not to
exceed 15 feet (4,572 mhi)
Copper Tube and Pipe Soldered or Brazed
1-1/2 inches (40 mm) and smaller, 6 feet
(1,829 mm), 2 inches (50 mm) and larger,
10 feet (3,048 mm)
Each floor, not to exceed
10 feet (3,048 mm)=
Steel and Brass Pipe for Threaded or Welded
Water or DWV
3/4 inch (20 mm) and smaller, 10 feet
(3,048 mm), 1 inch (25 mm) and larger,
12 feet (3,658 mm)
Every other floor, not to
exceed 25 feet (7,620 mm)'
Steel, Brass, and Tinned Threaded or Welded
Copper Pipe for Gas
1/2 Inch (15 mm), 6 feet (1829 mm),
3/4 inch (20 mm) and 1 inch (25.4 mm),
8 feet (2,438 mm, 1-1/4 inch (32 mm)
and larger, 1 feet (3,048 mm)
1/2 Inch (12.7 mm), 6 feet
(1 ,829 mm), 3/4 inch (19 mm)
and 1 inch (25.4 mm), 8
feet (2,438 mm), 1-1/4
every floor level
Schedule 40 PVC and Solvent Cemented
ABS DWV
All sizes, 4 feet (1,219 mm). Allow for
expansion every 30 feet (9,144 mm).°'°
Base and each floor. Provide
mid-story guides. Provide
for expansion every 30
feet (9,144 mm).*^
CPVC
Solvent Cemented
1 inch (25 mm) and smaller, 3 feet
(914 mm), 1-1/4 inch (932 mm) and
larger, 4 feet (1,21 9 mm)
Base and each floor. Provide
mid-story guides. '
Lead
Wiped or Burned
Continuous Support
Not to exceed 4 feet
(1,219 mm)
Copper
Mechanical
In accordance with standards acceptable to the
! Authority Having Jurisdiction
Steel and Brass
Mechanical
In accordance with standards acceptable to the
Authority Having Jurisdiction
PEX
Metal Insert and
Metal Compression
32 inches (800 mm)
Base and each floor.
Provide mid-story guides.
PEX-AL-PEX
Metal Insert and
Metal Compression
1/2 inch (12 mm) 1 JJf'^^^
3/4 inch (20 mm) \ 7°'"°"^® ,
1 inch (25 mm) | (2.489 mm)
Base and each floor.
Provide mid-story guides.
PE-AL-PE
Metal Insert and
Metal Compression
1/2 Inch (12 mm) 1 All sizes
3/4 inch (20 mm) " 98 inches
1 inch (25 mm) -* (2,489 mm)
Base and each floor.
Provide midstory guides.
Support adjacent to joint, not to exceed eighteen (1 8) inches (457 mm).
Brace at not more than forty (40) foot (1 2,1 92 mm) intervals to prevent horizontal movement.
Support at each horizontal branch connection.
Hangers shall not be placed on the coupling.
Vertical water lines may be supported In accordance with recognized engineering principles with regard to expansion and contraction, when first
approved by the Authority Having Jurisdiction.
See the appropriate lAPMO Installation Standard for expansion and other special requirements.
35
2007 CALIFORNIA PLUMBING CODE
36
CHAPTER 4
PLUMBING FIXTURES AND FIXTURE FITTINGS
Note: In addition tiie requirements of this chapter, which provide access to, or egress from, buiidings or facilities where accessibility
is required for applications listed in Section 109, of the California Building Code, regulated by the Division of the State Architect-
Access Compliance shall also comply with Chapter 1 1A for public housing and Chapter 1 1B for public accommodations under
authority cited by Gov. Code §4450 and in reference cited by Gov. Code §4450 through 4461, 12955. 1 and H&SC §18949. 1, 19952
through 19959.
401.0 Materials - General Requirements.
401 .1 Quality of Fixtures. Plumbing fixtures shall be
constructed of dense, durable, non-absorbent materials
and shall have smootli, impervious surfaces, free from
unnecessary concealed fouling surfaces. Except as
permitted elsewhere in this code, all fixtures shall
conform in quality and design to nationally recognized
applicable standards included in Table 14-1.
401.2 Lead. See Table 14-1. Sheet lead shall be not
less than die following:
For safe pans not less than four (4) pounds per square
foot (19.5 kg/m") or 1/16 inch (1.6 mm) thick.
401.3 Plumbing fixture fittings covered under the
scope of NSF 61 shall comply with the requirements of
NSF 61.
402.0 Water-Conserving Fixtures and Fittings.
402.1 Flush volumes for low-consumption and
water-saver water closets and urinals shall be in
accordance with applicable standards referenced
in Table 14-1. [HCD 1 & HCD 2] See Health and Safely
Code Section 17921.3.
402.2 Water Closets. Water closets, either flush
tank, flushometer tank, or flushometer valve
operated, shall have aii average consumption of
not more tlian 1.6 gallons (6.1 liters) of water per flush.
402.3 Urinals. Urinals shall have an average water
consumption of not more than 1.0 gallon (3.8 liters) of
water per flush.
402.4 Metered Faucets. Self-closing or self-closing
metering faucets shall be installed on lavatories
intended to serve die transient public, sucli as tliose in,
but not limited to, service stations, train stations,
airports, restaurants, and convention halls. Metered
faucets shall deliver not more tlian 0.25 gallons (1.0
liter) of water per use.
402.5 Emergency Safety Showers. Emergency
safety showers shall not be limited in their water
supply flow rates.
402.6 Installation. Water-conserving fixtures
shall be installed in strict accordance with the
manufacturers' instructions to maintain their
rated performance.
403.0 Overflows.
When any fixture is provided with an overflow, the
waste shall be so arranged that tlie standing water in
the fixture cannot rise in the overflow when the
stopper is closed or remain in the overflow when tlie
fixture is empty. The overflow pipe from a fixture
shall be comiected on the house or inlet side of the
fixture trap, except tliat overflow on flush tanks may
discharge into tlie water closets or urinals served by
them, but it shall be unlawful to connect such
overflows with any otlier part of the drainage system.
404.0 Strainers and Connections.
404.1 Strainers. All plumbing fixtures, other
than water closets and urinals, shall be equipped
with approved strainers having an approved
waterway area. Strainers serving shower drains
shall have a waterway equivalent to the area of
the tailpiece.
404.2 Connections. Fixtures having concealed
slip joint connections shall be provided with an
access panel or utility space at least twelve (12)
inches (305 mm) in its least dimension and so
arranged without obstructions as to make such
connections accessible for inspection and repair.
404.3 Continuous wastes and fixture tailpieces shall
be constructed from the materials specified in Section
701.0 for drainage piping, provided, however, that
such connections where exposed or accessible may be
of seamless drawn brass not less than No. 20 B&S
Gauge (0.032 inches) (0.8 mm). Each such tailpiece,
continuous waste, or waste and overflow shall not be
less than one and one-half (1-1/2) inches (40 mm) O.D.
for suiks, dishwashers, laundry tubs, batlitubs, urinals,
and similar fixtures, and not less than one and one
quarter (1-1/4) indies (32 mm) for lavatories, drinking
fountains, and similar small fixtures.
404.4 Approved wye or other directional-type
branch fittings shall be installed in all continuous
wastes connecting or receiving the discharge from
food waste disposal units, dishwashers, clothes
washers,-or other-force -discharge -fixtures -or—
appliances. No dishwasher drain shall be connected to
a sink tailpiece, continuous waste, or trap on the
discharge side of a food waste disposal unit.
37
405.0 - 407.7
2007 CALIFORNIA PLUMBING CODE
405.0 Prohibited Fixtures.
405.1 Water closets having an invisible seal or an
unventilated space or having walls which are not
thoroughly washed at each discharge shall be
prohibited. Any water closet that might permit
siphonage of the contents of the bowl back into the
tahk shall be prohibited. Drinking foimtains shall not
be installed in public toilet rooms.
405.2 Prohibited Urinals. Floor-type and wall-hung
type trough urinals shall be prohibited. Urinals that have
an invisible seal or that have an unventilated space or
wall that is not thoroughly washed at each discharge
shall be prohibited.
405.3 Fixed wooden, or tile wash trays or sinks for
domestic use shall not be installed in any building
designed or used for human habitation. No sheet
metal-lined wooden bathtub shall be installed or
recormected. No dry or chemical closet (toilet) shall be
installed in any building used for himaan habitation,
tmless first approved by the Health Officer.
406.0 Special Fixtures and Specialties.
406.1 Water and Waste Connections. Baptisteries,
ornamental and lily ponds, aquaria, ornamental
fountain basins, and similar fixtures and specialties
requiring water and /or waste connections shall be
submitted for approval to the Authority Having
Jurisdiction prior to installation.
406.2 Restaurant kitchen and other special use sinks
may be made of approved-type bonderized and
galvanized sheet steel of not less than No. 16 U.S.
gauge (0.0625 inches) (1.6 mm). All sheet-metal
plumbing fixtures shall be adequately designed,
constructed, and braced in an approved manner to
satisfactorily accomplish their intended purpose.
406.3 Special Use Fixtures. Special use fixtures
shall be made of one of the following:
(A) Soapstone
(B) Chemical stoneware
(C) Copper-based alloy
(D) Nickel-based alloy
(E) Corrosion-resistant steel
(F) Other materials suited for the intended use of the
fixture.
406.4 Zinc Alloy Components. Zinc alloy com-
ponents shall meet the applicable nationally
recognized standards and shall be used in accordance
with their listing.
406.5 Drinking Fountains. [HCD 1 & HCD 2]
Drinking fountains shall be installed and so regidated that a
jet of water extending at least 2 inches (51 mm) in height
from the water orifice shall he constantly available. The
orifice shall not he accessible to the mouth of the drinker nor
subject to immersion.
406.5.1 [OSHPD 1, 2, 3 & 4, DHS] Drinking
fountains shall be installed and so regidated that a jet
of loater extending at least 2 inches (51mm) from the
water orifice shall be constantly available. The orifice
shall not be accessible to the mouth of the drinker nor
subject to immersion.
407.0 Installation.
407.1 Cleaning. Plumbing fixtures shall be installed
in a manner to afford easy access for repairs and
cleaning. Where practical, all pipes from fixtures shall
be run to the nearest wall.
407.2 Joints. Where a fixture comes in contact with
the wall or floor, the joint between the fixture and the
wall or floor shall be made watertight.
407.3 Securing Fixtures. Floor-outlet or floor-
mounted fixtures shall be rigidly secured to the
drainage connection and to the floor, when so
designed, by screws or bolts of copper, brass, or other
equally corrosion-resistant material.
407.4 Wall-Hung Fixtures. Wall-hung fixtixres shall
be rigidly supported by metal supporting members so
that no strain is transmitted to the connections. Flush
tanks and similar appurtenances shall be secured by
approved non-corrosive screws or bolts.
407.5 Securing Floor-Mounted, Back-Outlet Water
Closet Bowls. Floor-mounted, back-outlet water
closet bowls shall be set level with an angle of ninety
(90) degrees (1.58 rad) between the floor and wall at
the centerUne of the fixture outlet. The floor and wall
shall have a flat mounting surface for at least five (5)
inches (127 mm) to the right and left of the fixture
outlet centerline. The fixture shall be secured to the
wall outlet flange or drainage connection and to the
floor by corrosion-resistant screws or bolts. The closet
flange shall be secured to a firm base.
Where floor-mounted, back-outlet water closets
are used, the soil pipe shall not be less than three (3)
inches (80 mm) in diameter. Offset, eccentric, or
reducing floor flanges shall not be used.
407.6 Setting. Fixtures shall be set level and in
proper aligrunent with reference to adjacent walls.
No water closet or bidet shall be set closer than
fifteen (15) inches (381 mm) from its center to any
side wall or obstruction nor closer than thirty (30)
inches (762 mm) center to center to any similar
fixture. The clear space in front of any water closet or
bidet shall not be less than twenty-four (24) inches
(610 mm). No urinal shall be set closer than twelve
(12) inches (305 mm) from its center to any side waU
or partition nor closer than twenty-four (24) inches
(610 mm) center to center.
407.7 installations for Persons with Disabilities.
Where facilities for persons with disabilities are
38
PLUMBING FIXTURES AND FIXTURE FITTINGS
407.7-411.2
N
required in applicable building regulations, the
facilities shall be installed in accordance with those
regulations.
[HCD 1/AC] For specific requirements regarding
accommodations for -persons with physical disabilities, see
California Code of Regulations, Title 24, Part 2, Chapter
llA and/or Chapter IIB as applicable.
407.8 Supply Fittings. The supply lines and fittings
for every plumbing fixture shall be so installed as to
prevent baclcflow as required in Chapter 6.
408.0 Water Ciosets.
408.1 Water closet bowls for public use shall be of tlae
elongated type. In nurseries, schools, and otlier similar
places where plumbing fixtures are provided for tlie
use of children under six (6) years of age, water closets
shall be of a size and height suitable for cliildren's use.
All water closets shall be equipped with seats as
required below.
408.2 Water Closet Seats.
408.2.1 Water closet seats shall be of smooth,
non-absorbent material.
408.2.2 All water closet seats, except those
within dwelling units, shall be either of tlie open
front type or have an automatic seat cover
dispenser.
408.2.3 Water closet seats shall be properly
sized for the water closet bowl type.
408.2.4 Seats for use in public buildings shall
conform to tlie standard listed in Table 14-1.
409.0 Urinals.
Every water supply to a urinal shall be protected by
an approved-type vacuum breaker or other
approved backflow prevention device as described
in Section 603.3.
410.0 Flushing Devices for Water Closets and
Urinals.
410.1 Flushing Devices Required. Each water
closet, urinal, clinic sink, or other plumbing fixture
tiiat depends on trap siphonage to discharge its waste
contents shall be provided witii a flushometer valve,
flushometer tanlc, or flush tank designed and installed
so as to supply water in sufficient quantity and rate of
flow to flush tiie contents of the fixture to wliich it is
connected, to cleanse the fixture, and to refill the
^fixture^trap, without excessive water use. Flushing"
devices shall meet anti-siphon requirements required
in Chapter 6.
410.2 Automatic Flushing Tanks. Tanks flushing
more than one (1) urinal shall be automatic in
operation and of sufficient capacity to provide the
necessary volume to flush aiid properly cleanse all
urinals simultaneously. Automatically controlled
flushometer valves may be substituted for flush tanks.
410.3 Flushometer Valves. No manually controlled
flushoraeter valve shall be used to flush more tiian
oiie (1) urinal, and each such urinal flushometer valve
shall be an approved, self-closing type discharging a
predetermined quantity of water. Flushometers shall
he installed so tliat they will be accessible for repair.
Flushometer valves shall not be used where tiie water
pressure is insufficient to properly operate them.
Wlien tlie valve is operated, it shall complete tiie cycle
of operation automatically, opening fully and closing
positively under the line water pressure. Each
flushometer shall be provided with a means for
regulating tlie flow tiirough it.
410.4 Water Supply for Flush Tanks. An adequate
quantity of water shall be provided to flush and clean
ihe fixture served. The water supply for flushing tanks
and flushometer tanks equipped for manual flushing
shall be controlled by a float valve or otlier automatic
device designed to refUltlie tank after eacli discharge
and to completely shut off tlie water flow to tlie tank
when the tank is filled to operational capacity.
Provision shall be made to automatically supply water
to the fixture so as to refill the trap seal after each
flusliing. The water supply to flush tanks equipped for
automatic flushing shall be controlled by a suitable
timing device.
410.5 Overflows in Flush Tanks. Flush tanks shall
be provided with overflows discharging into the
water closet or urinal connected thereto. Overflows
supplied as original parts with the fixture shall be of
sufficient size to prevent tank flooding at the
maximum rate at which the tank is supplied with
water xmder normal operating conditions and when
installed per manufacturer's insti-uctions.
411.0 Floor Drains and Shower Stalls.
411.1 Floor drains shall be considered plumbing
fixtures, and each such drain shall be provided witii
an approved-type strainer having a waterway
equivalent to the area of the tailpiece. Floor drains,
floor receptors, and shower drains shall be of an
approved type, suitably flanged to provide a
watertight joint in tlie floor.
411.2 Location of Floor Drains. Floor drains shall
be installed in tlie following areas:
- 411.2.1 Toilet ro oms containing two (2) or
more water closets or a combination of one (1)
water closet and one (1) urinal, except in a
dwelling unit.
41 1 .2.2 Commercial kitcliens.
39
411.2-411.8
2007 CALIFORNIA PLUMBINGCODE
41 1 .2.3 Laxmdry rooms in commercial buildings
and common laundry facilities in multi-family
dwelling buildings.
41 1 .3 Food Storage Areas. If drains are provided in
storerooms, walk-in freezers, walk-in coolers,
refrigerated equipment, or other locations .where food
is stored, such drains shall have indirect waste piping.
Separate waste pipes shall be run from each food
storage area, each with an indirect connection to the
building sanitary drainage system. Traps shall be
provided if required under Section 801.2.2 of this code
and shall be vented.
Indirect drains may be located in freezers or other
spaces where freezing temperatures are maintained,
provided that traps, when suppUed, are located where
the seal will not freeze. Otherwise, the floor of the
freezer shall be sloped to a floor drain located outside
of the storage compartment.
41 1 .4 Floor Slope. Floors shall be sloped to floor drains.
41 1 .5 Shower receptors are plumbing fixtures and
shall conform to the general requirements contained
in Section 401.0. Each such shower receptor shall be
constructed of vitrified china or earthenware, ceramic
tile/porcelain-enameled metal, or of such other
material as may be acceptable to the Authority Having
Jurisdiction. No shower receptor shall be installed
unless it conforms to acceptable standards as
referenced in Table 14-1 or until a specification or a
prototype or both of such receptor has first been
submitted to and approval obtained from the
Authority Having Jurisdiction.
41 1 .6 Each shower receptor shall be an approved type
and be so constructed as to have a finished dam, curb,
or threshold that is at least one (1) inch (25.4 mm) lower
than the sides and back of such receptor. In no case
shall any dam or threshold be less than two (2) inches
(51 mm) or more than nine (9) inches (229 mm) in
depth when measured from the top of the dam or
threshold to the top of the drain. Each such receptor
shall be provided with an integral nailing flange to be
located where the receptor meets the vertical surface
of the finished interior of the shower compartment.
The flange shall be watertight and extend vertically a
minimum of one (1) inch (25.4 mm) above the top of
the sides of the receptor. The finished floor of the
receptor shall slope uniformly from the sides toward
the drain not less than one-quarter (1/4) inch per foot
(20.9 mm/m), nor more than one-half (1/2) inch per
foot (41.8 mm/m). Thresholds shall be of sufficient
width to accommodate a minimtim twenty-two (22)
inch (559 mm) door. Shower doors shall open so as to
maintain a minimum twenty-two (22) inch (559 mm)
imobstructed opening for egress.
Exception: Showers that are designed to
comply with the accessibility standards listed in
Table 14-1. [HCD 1 /AC] Specific requirements
regarding accommodations for persons with physical
disabilities are contained in California Code of
Regulations, Title 24, Part 2, Chapter llA and/or
Chapter IIB as applicable. Table 14-1 does not contain
the correct accessibility standards for use in California.
41 1 .7 AU shower compartments, regardless of shape,
shall have a minimum finished interior of one
thousand twenty-four (1,024) square inches (0.66 m^)
and shall also be capable of encompassing a thirty (30)
inch (750 mm) circle. The minimum required area and
dimensions shall be measured at a height equal to the
top of the threshold and at a point tangent to its
centerline. The minimum area and dimensions shall
be maintained to a point seventy (70) inches (1778
mm) above the shower drain outlet with no
protrusions other than the fixture valve or valves,
shower head, soap dishes, shelves, and safety grab
bars or rails. Fold-down seats in accessible shower
stalls shall be permitted to protrude into the thirty (30)
inch (750 mm) circle.
Exception No. 1: Showers that are designed to
comply with Chapter llA or IIB of the California
Building Code.
Exception No. 2: The minimum required area
and dimension shall not apply where an existing
bathtub is replaced by a shower receptor having
minimum overall dimensions of 30 inches (750
mm) in width and 60 inches (1,500 mm) in length.
Exception No. 3: [HCD 1/AC] Specific requirements
regarding accommodations for persons with physical
disabilities are contained in California Code of
Regulations, Title 24, Part 2, Chapter llA and/or
Chapter IIB as applicable. ICC/ANSI A117.1 does not
contain the correct accessibility standards for use in
California.
411.8 When the construction of on-site built-up
shower receptors is permitted by the Authority
Having Jurisdictioh, one of the following means shall
be employed:
(1) Shower receptors built directly on the
grotind:
Shower receptors buUt directly on the groxmd
shall be watertight and shall be constructed
from approved-type dense, nonabsorbent
and noncorrosive materials. Each such
receptor shall be adequately reinforced, shall
be provided with an approved flanged floor
drain designed to make a watertight joint in
the floor, and shall have smooth, impervious,
and durable sujfaces.
(2) Shower receptors built aboveground:
When shower receptors are built above-
ground, the subfloor and rough side of
walls to a height of not less than three (3)
inches (76 mm) above the top of the finished
40
PLUMBING FIXTURES AND FIXTURE FITTINGS
411.8-412.1
dam or threshold shall be first lined with
sheet plastic,* lead,* or copper,* or shall be
lined with other durable and watertight
materials.
All lining materials shall be pitched one-
quarter (1/4) inch per foot (20.9 mm/m) to weep
holes in the subdrain of a smooth and solidly
formed subbase. All such lining materials shall
extend upward on the rough jambs of the
shower opening to a point no less than three (3)
inches (76 mm) above the top of the finished
dam or threshold and shall extend outward over
the top of the rough threshold and be turned
over and fastened on tlie outside face of both tlie
rough tlueshold and the jambs.
Nonmetallic shower subpans or linings
may be built up on the job site of not less than
three (3) layers of standard, grade fifteen (15)
pound (6.8 kg) asphalt-impregnated roofing
felt. The bottom layer shall be fitted to the
formed subbase and each succeeding layer
thoroughly hot-mopped to that below. All
corners shallbe carefully fitted and shall be
made strong and watertight by folding or
lapping, and each corner shall be reinforced
with suitable webbing hot-mopped in place.
All folds, laps, and reinforcing web]3ing shall
extend at least four (4) inches (102 mm) in all
directions from the corner, and all webbing
shall be of approved type and mesh, producing a
tensile strength of not less than fifty (50) psi
(344.5 kPa) in either direction. Nonmetallic
shower subpans or linings may also consist of
multilayers of other approved equivalent
materials suitably reinforced and carefully
fitted in place on the job site as elsewhere
required in this section.
Linings shall be properly recessed and
fastened to approved backing so as not to
occupy the space required for the wall covering
and shall not be nailed or perforated at any
point that may be less than one (1) inch (25.4
mm) above the finished dam or threshold. An
approved-type subdrain shall be installed with
every shower subpan or lining. Each such sub-
drain shall be of the type tliat sets flush with tlie
subbase and shall be equipped with a clampiiig
ring or other device to make a tight connection
between the lining and the drain. The subdrain
shall have weep holes into the waste line. The
weep holes located in the subdrain clamping
Iring shall be protected from clogging.
All shower lining materials shall conform to
approved standards acceptable to the Authority
Having Jurisdiction.
*Lead and copper subpans or linings shall be insulated
from all conducting substances other than their
connecting drain by fifteen (15) potmd (6.8 kg) asphalt
felt or its equivalent, and no lead pan or liner shall be
constructed of material weighing less than four (4)
pounds per square foot (19.5 kg/m^). Copper pans or
liners shall be at least No. 24 B & S Gauge (0.02 inches)
(0.5 nun). Joints in lead pans or liners shall be burned.
Joints in copper pans or liners shall be soldered or
brazed. Plastic pans shaU not be coated witli asphalt-
based materials.
411.8.1 Tests for Shower Receptors. Shower
receptors shall be tested for watertightness by
filling with water to the level of the rough
threshold. The test plug shall be so placed that
botli upper and under sides of the subpan shall
be subjected to the test at the point where it is
clamped to the drain.
41 1 .9 Floors of public shower rooms shall have a
nonskid surface and shall be drained in such a
manner that wastewater from one bather will not
pass over areas occupied by other bathers. Gutters in
public or gang shower rooms shall have rounded
corners for easy cleaning and shall be sloped not less
than two (2) percent toward drains. Drains in gutters
shall be spaced not more than eight (8) feet (2438
mm) from sidewalls nor more than sixteen (16) feet
(4879 mm) apart.
411.10 Location of Valves and Heads. Control
valves and showerheads shall be located on the
sidewall of shower compartm.ents or be Otherwise
arranged so that the showerhead does not discharge
directly at the entrance to the compartment and the
bather can adjust the valves prior to stepping into the
shower spray.
411.11 Water Supply Riser. Every water supply
riser from the shower valve to the showerhead outiet,
whetlier exposed or not, shall be securely attached to
tlie structure.
412.0 IVIinimum Number of Required Fixtures.
412.1 Fixture Count. Plumbing fixtures shall be
provided for the type of building occupancy and
in tlie minimum number shown in Table 4-1.
412.1.1 IDSA- AC] Effective Januai-y 1, 1990, in new
construction and those existing facilities which
occupancy type are listed in Tables 4-1 and 4-4 for
public use, which apply for permit to undertake
construction, structural alterations, repairs or
improvement which exceed 50 percent of the square
footage of the entire facility,- shall install water closets,----
urinals, lavatories and drinking fountains as stipulated
in Tables 4-1 and 4-4 for public use. Community
and/or municipal parks with a bleacher capacity not
exceeding 500 seats shall be exempt from the
41
412.1 -413.1
2007 CALIFORNIA PLUMBING CODE
requirements of this section and Tables 4-1 and 4-4.
Each bathroom shall comply with Part 2, Chapters 11 A
and IIB of the California Building Code.
412.2 Access to Fixtures.
412.2.1 In multi-story buildings, accessibility to
the required fixtures shall not exceed one (1)
vertical story.
41 2.2.2 Fixtures accessible only to private offices
shall not be counted to determine compliance
with this section.
412.3 Separate Facilities.
Separate toilet facilities shall be provided for each sex.
Exceptions:
(1) Residential installations.
(2) In occupancies serving ten (10) or fewer
people, one (1) toilet facility, designed for
use by no more than one (1) person at a
time, shall be permitted for use by both
sexes.
(3) In business and mercantile occupancies with
a total floor area of fifteen hundred (1500)
square feet (139.5 m-) or less, one (1)
toilet facility, designed for use by no more
than one (1) person at a time, shall satisfy
the requirements for serving customers and
employees of both sexes.
412.3.1 [For OSHPD 1, 2, 3 & 4] Separate toilet
facilities shall be provided for the use of patients, staff
personnel and visitors.
412 A Fixture Requirements for Special Occupancies.
412.4.1 Additional fixtures may be required
when unusual environmental conditions or
special activities are encoimtered.
412.4.2 In food preparation areas, fixture
requirements may be dictated by health codes.
41 2.4.3 T3^es of occupancy not shown in Table
4-1 shall be considered individually by the
Authority Having Jurisdiction.
412.5 Facilities in IVIercantile and Business
Occupancies Serving Customers.
412.5.1 Requirements for customers and
employees shall be permitted to be met with a
single set of restrooms accessible to both groups.
The required number of fixtures shall be the
greater of the required number for employees or
the required number for customers.
412.5.2 Fixtures for customer use shall be
permitted to be met by providing a centrally
located facility accessible to several stores. The
maximum distance from entry to any store to
this facility shall not exceed five hundred (500)
feet (152.4 m).
412.5.3 In stores with a floor area of one
hundred fifty (150) square feet (13.9 m^) or
less, the requirement to provide facilities for
employees shall be permitted to be met by
providing a centrally located facility accessible
to several stores. The maximum distance from
entry to any store to this facility shall not
exceed three himdred (300) feet (91.4 m).
412.6 Food Service Establishiments. Food service
establishments with an occupant load of one himdred
(100) or more shall be provided with separate facilities
for employees and customers. Customer and
employee facilities may be combined for occupant
loads less than one hundred (100).
412.6.1 [DHS] Employee Lavatories in Food
Estabiistiments. Employee lavatories installed in
food establishments shall be equipped with an approved
single spout capable of providing tempered (lOO'F -
115'F) (37.8'C-46.1 °C) running luater.
Exception: This requirement applies only to
commissaries serving mobile food preparation units.
412.7 Toilet Facilities for Worl<ers.
Suitable toilet facilities shall be provided and
maintained in a sanitary condition for the use of
workers during construction.
412.8 [CA] Cosmetology. Each school shall provide
public toilet rooms for each sex on the licensed premises in
accordance with the California Plumbing Code, Table 4-1.
412.9 [CA] Cosmetology Establishments. Each
establishment ivhere hairdressing services are performed
shall provide at least one public toilet room located on the
premises in accordance with the California Plumbing Code,
Table 4-1.
412.10 [DHS] Commissaries Serving Mobile Food
Preparation Units. Commissaries serving mobile food
preparation units shall have at least one hose bib. The hose
bib shall be supplied with hot and cold water and be
provided with a single spout, a backflow-preventer device
and shall be located on the premises of the establishment.
413.0 Fixtures and Fixture Fittings for Persons
with Disabilities.
Plumbing fixtures and fixture fittings for persons with
disabilities shall conform to the appropriate standards
referenced in Table 14-1 of this code. [HCD 1/AC]
Specific requirements regarding accommodations for
persons with physical disabilities are contained in
California Code of Regulations, Title 24, Part 2, Chapter
llA and/or Chapter HE as applicable. Table 14-1 does not
contain the correct accessibility standards for use in
California.
413.1 Limitation of IHot Water Temperature for .
Public Lavatories. I
Hot water delivered from public-use lavatories shall
42
PLUMBING FIXTURES AND FIXTURE FITTINGS
413.1 -418.0
be limited to a maximum temperature of 120°F. The
water heater thermostat shall not be considered a
control for meeting this provisioii.
414.0 Bathtubs and Whirlpool Bathtubs.
Unless otherwise listed, all bathtubs and whirlpool
batlitubs shall comply widi tlie following requiremeiits:
414.1 A removable panel shall be provided to access
aiid remove the pump. Whirlpool pump access
located in the crawl space shall be located no more
tlian twenty (20) feet (6096 mm) from an access door,
trap door, or crawl hole.
414.2 The circulation pump shall be located above tlie
crown weir of tlie trap.
414.3 The pump and the circulation piping shall be
self-draining to miriimize water retention in
accordance witli staiidards refereiiced in Table 14-1.
414.4 Suction fittings on whirlpool bathtubs shall
comply with the listed standards.
414.5 Limitation of Hot Water in Bathtubs and
Whirlpool Bathtubs. The maximum hot water
temperature discharging from the bathtub and
wliirlpool batlitub filler shall be liinited to 120°F. The
water heater thermostat shall not be coiisidered a
conti'ol for meeting tills provisioii.
418.0 Shower and Tub-Shower Combination
Control Valves.
Showers and tub-shower combinations in all buildings
shall be provided with individual control valves of tlie
pressure balance, thermostatic, or combination
pressure balance /thermostatic mixing valve type that
provide scald and thermal shock protection. These
valves shall conform to ASSE 1016. Gang showers,
when supplied with a single temperature-controlled
water supply pipe, may be controlled by a niaster
thermostatic mixing valve in lieu of individually
controlled pressure balance, thermostatic, or
combination pressure balance /thermostatic mixing
valves. Handle position stops shall be provided on
such valves and shall be adjusted per the
manufacturer's instructions to deliver a maximum
mixed water setting of 120°F (49°C). The water heater
thermostat shall not be considered a suitable control
for meeting tliis provision.
415.0 Installation of Fixture Fittings.
Where two separate handles control the hot and cold
water, tlie left-hand control of the faucet when facing
the fixture fitting outlet shall provide the means to
alter tlie hot water temperature from tlie fixture fitting.
Single-handle mixing valves shall have tlie flow of
hot water correspond to ti.ie markings on die fitting.
416.0 Bidets.
416.1 Materials. Bidets shall conform to the
standards listed in Table 14-1.
416.2 Backflow Protection. The water supply to tlie
bidet shall be protected according to Chapter 6, wliich
allows for an airgap or vacuum breaker.
417.0 Future Fixtures.
When provision is made for tlie future installation of
fixtures, those provided for shall be considered in
determining the required sizes of drain pipes.
Construction for future installations shall be
terminated with a plugged fitting or fittings. Where .
Tlie^]51ugged fitting is at tlie point where the trap of a"
fixture may be installed, die plumbing system for sucli
fixture shall be complete and conform with all
plumbing requirements of tliis code. ,
43
Table 4-1
2007 CALIFORNIA PLUMBING CODE
TABLE 4-1
Minimum Plumbing Facilities^
Each building stiall be provided with sanitary faoilitles, including provisions for persons with disabilities as prescribed by the Departnnent Having Jurisdiction".
For requirements for persons with disabilities, Cijapter 11Aor11Bof the Caiifornia Building Code, stiall be used.
The total occupant load shall be determined by minimum exiting requirements. The minimum number of fixtures shall be calculated at fifty (50) percent male and
fifty (50) percent female based on the total occupant load.
The occupant load and use of the building or space under consideration shall first be established using the Occupant Load Factor Table A. Once the occupant
load and uses are determined, the requirernents of Section 41 2.0 and Table 4-1 shall be applied to determine the minimum number of plumbing fixtures required.
This table applies to new buildings, additions to a building, changes of occupancy or type in an existing building resulting in increased occupant load (example:
change an assembly room from fixed seating to open seating). Exception: New cafeterias for employee use are the only use exempted from this requirement.
Exceptions:
(1) [HCD 1/AC& HCD 2] For applications listed in Sections 108.2. 1.2 and 108.2. 1.3 regulated by the Department of Housing and Community Development,
each building shall be provided with sanitary facilities, including provisions for persons with disabilities as prescribed by the Department. Covered multi-
family dwellings required to be accessible to persons with disabilities shall comply with California Code of Regulations, Title 24, Part 2, Chapter 1 1A.
Permanent buildings in mobilehome parks and special occupancy parks required to be accessible by persons with disabilities, shall comply with California
Code of Regulations, Title 24, Part 2, Chapter 118.
(2) [HCD 1] For limited density owner-built rural dwelling sanitary facilities, the type, design and number of facilities as required and approved by the local
health official shall be provided to the dwelling sites, it shall not be required that such facilities be located within the dwelling.
Type of Building
Water Closets"
Urinals'"
Lavatories
Bathtubs or Showers
Drinking Fountains?''*''
or Occupancy'
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
Assembly places -
Male Female
Male
Male Female
theatres, auditoriums.
1:1-15 1:1-15
0:1-9
1 per 40 1 per 40
convention halls, etc-
2:16-35 3:16-35
1:10-50
for permanent
3: 36-55 4: 36-55
Add one fixture
employee use
Over 55, add 1 fixture
for each additional 40
persons.
for each
additional 50 males.
Assembly places -
Male Female
Male
Male Female
theatres, auditoriums,
1:1-100 3:1-50
1:1-100
1:1-200 1:1-200
1:1-150
convention Halls, etc. -
2:101-200 4:51-100
2: 101-200
2:201-400 2:201-400
2:151-400
for public use
3:201-400 8:101-200
3:201-400
3:401-750 3:401-750
3:401-750
11:201-400
4:401-600
Over 750, add one fixture
Over 750, add one fixture
Over 400, add one fixture
Over 600, add 1 fixture
for each additional 500
for each additional 500
for each additional 500
for each additional
persons.
persons.
males and 1 for each
300 males.
additional 125 females.
Dormitorles'-
Male Female
Male
Male Female
1 per 8
1 per 150"
School or labor^^
1 per 10 1 per 8
1 per 25
1 per 12 1 per 12
For females, add
Add 1 fixture for each
Over 150, add 1 fixture
Over 12, add one fixture fo
1 bathtub per 30.
additional 26 males (over
for each additional 50
each additional 20 males
Over 150, add 1
10) and 1 for each additional
males.
and 1 for each 15
bathtub per 20.
20 females (over 8).
additional females.
Dormitories -
Male Female
Male
Male Female
1 per 8
for staff use"
1:1-15 1:1-15
2:16-35 3:16-35
3: 36-55 4: 36-55
Over 55, add 1 fixture for
each additional 40 persons.
1 per 50
1 per 40 1 per 40
Dwellings"
Single dwelling
1 per dwelling
1 per dwelling
1 per dwelling
Multiple dwelling or
1 per dwelling or
1 per dwelling or
1 per dwelling or
apartment house"
apartment unit
apartment unit
apartment unit
Hospital waiting rooms
1 per room
1 per room
1 per150«
Hospitals -
Male Female
Male
Male Female
for employee use
1:1-15 1:1-15
2:16-35 3:16-35
3: 36-55 4: 36-55
Over 55, add 1 fixture for
each additional 40 persons.
0:1-9
1:10-50
Add one fixture for each
additional 50 males.
1 per 40 1 per 40
Hospitals
Individual room
1 per room
1 per room
1 per room
Ward room
1 per 8 patients
1 per 1 patients
1 per 20 patients
1 per 150'=
Industrial" warehouses.
Male Female
UptolOO, 1 per 10
1 shower for
1 per 150'=
workshops, foundries,
1:1-10 1:1-10
persons
each 15 persons
and similar
2:11-25 2:11-25
exposed to
establishments -
3: 26-50 3: 26-50
Over 100, 1 per 15
excessive heat or
for employee use
4:51-75 4:51-75
5:76-100 5:76-100
Over 1 00, add 1 fixture for
each additional 30 persons.
persons'' ■
to skin contam-
ination with poison-
ous. Infectious, or
irritating material
Institutional - other than
Male Female
Male
Male Female
1 per 8
1 per 150"
hospitals or penal
1 per 25 1 per 20
0:1-9
1 per 10 1 per 10
Institutions (on each
1:10-50
occupied floor)
Add one fixture for each
additional 50 males.
44
PLUMBING FIXTURES AND FIXTURE FITTINGS
Table 4-1 cont.
),
Type of Building
Water Closets"
Urinals''"
Lavatories
Batlitubs or Siiowers
Drinking Fountains''"
or Occupancy'
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
(Fixtures per Person)
Institutional - other than
Male Female
Male
Male Female
1 per 8
1 per 150"
hospitals or penal
1:1-15 1:1-15
0:1-9
1 per 40 1 per 40
institutions (on each
2:16-35 3:16-35
1:10-50
occupied floor) -
3: 36-55 4: 36-55
Add one fixture for each
for employee use
Over 55, add 1 fixture for
each additional 40 persons.
additional 50 males.
Office or public
IVIale Female
IVIaie
Male Female
1 per 150"
buildings
1:1-100 3:1-50
1:1-100
1:1-200 1:1-200
2:101-200 4:51-100
2:101-200
2:201-400 2:201-400
3:201-400 8:101-200
3:201-400
3:401-760 3:401-750
11:201-400
4:401-600
Over 750, add one fixture
Over 400, add one fixture
Over 600, add 1 fixture for
for each additional 500
for each additional 500
each additional 300 males.
persons.
males and 1 for each
additional 150 females.
Office or public
Male Female
Male
Male Female
buildings -
1:1-15 1:1-15
0: 1-9
1 per 40 1 per 40
for employee use
2:16-35 3:16-35
3:36-55 4:36-55
Over 55, add 1 fixture for
each additional 40 persons.
1:10-50
Add one fixture for each
additional 50 males.
Penal institutions -
Male Female
Male
Male Female
1 per 150"
for employee use
1:1-15 1:1-15
2:16-35 3:16-35
3:36-55 4:36-55
Over 55, add 1 fixture for
each additional 40 persons.
0:1-9
1:10-50
Add one fixture for each
additional 50 males.
1 per 40 1 per 40
Penal Institutions -
1 per 16
for prison use
Cell
1 per ceil
Male
1 per ceil
1 per cell block floor
Exercise room
1 per exercise room
1 per exercise room
1 per exercise room
1 per exercise room
Exercise Area
1 per 20
1 per 20
-Access to drinking fountain
AgricuHure Buildings
Milking Barns
At least 1
At least 1
Meat and Poultry
Male Female
Inspection BIdgs
1 1-15 1 1-15
2 16-35 2 16-35
3 36-55 3 36-55
4 56-80 4 S6-B0
1 for each addtlonal 30
persons in excess of 80
Scfioois of Cosmetology
Male Female
'At least 1 *Aileast2
'Per installation
At least 1
Cosmetologlcai
'At least 1 'At least 1
Establishments
'Per installation
Corrections Standards
Authority
Access to drinking fountain
Juvenile Halls
IperB
1 per 10
1per6
Camp
1 per 10
1 per 10
1per7
Access to drinking fountain
Corrections Standards
Authority
Local Detention
1 perB
1 perB
1 per 20
Facilities
Looked Sleeping
1
1
Rooms"
Public or
Same as Office or Public
Same as Office or Public
Same as Office or Public
Same as Office or Public
professional offices
Buildings for employee use"
Buildings for employee use .
Buildings for employee use"
Buildings for employee use"
Restaurants, pubs, and
Male Female
Male
Male Female
lounges"'"'"
1:1-50 1:1-50
1:1-150
1:1-150 1:1-150
2:51-150 2:51-150
Over 150, add 1 fixture for
2:151-200 2:151-200
3:151-300 4:151-300
each additional 150 males.
3:201-400 3:201-400
Over 300, add 1 fixture for
Over 400, add 1 fixture for
each additional 200 persons.
each additional 400 persons.
Retail or - -
WhdIesairStofes
Male Female
1:1-100 1:1-25 -
Male
0:0-25
One for each two
water closets
0:1-30"
2:101-200 2:26-100
1:26-100
One additional drinking
3:201-400 4:101-200
2:101-200
fountain for each 150
6:201-300
3:201-400
persons thereafter
8:301-400
4:401-600
Over 400, add one fixture for
Over 600, add one fixture
each additional 500 males and
for each additional
one for each 150 females
300 males
45
Table 4-1 Footnotes
2007 CALIFORNIA PLUMBING CODE
Type of Building
or Occupancy'
Water Ciosets"
(Fixtures per Person)
Urinals'"
(Fixtures per Person)
Lavatories
(Fixtures per Person)
Batlitubs or Showers
(Fixtures per Person)
Drinking Fountains*™"
(Fixtures per Person)
Schools - for staff use
All schools
Male Female
1:1-15 1:1-15
2:16-35 2:16-35
3: 36-55 3: 36-55
Over 55, add 1 fixture for
each additional 40 persons.
Male
1 per 50
Male Femate
1 per 40 1 per 40
Schools - for student use
Nursery
Male Female
1:1-20 1:1-20
2:21-50 2:21-50
Over 50, add 1 fixture for
each additional 50 persons.
Mate Female
1:1-25 1:1-25
2: 26-50 2: 26-50
Over 50, add 1 fixture for .
each additional 60 persons.
1 per 150"
Elementary
Male Femate
1 per 30 1 per 25
Male
1 per 75
Mate Female
1 per 35 1 per 35
1 per 150"
Secondary
Male Female
1 per 40 1 per 30
Male
1 per 35
Male Female
1 per 40 1 per 40
1 per 150"
Others (colleges,
universities, adult
centers, etc.)
Male Female
1 per 40 1 per 30
Male
1 per 35
Male Female
1 per 40 1 per 40
1 per 150"
Worship places
educational and
activities Unit
Male Female
1 per 150 1 per 75
Mate
1 per 150
1 per 2 water closets
1 per 150"
Worship places
principal assembly place
Male Female
1 per 150 1 per 75
Male
1 per 150
1 per 2 water closets
1 per 150"
1 The figures shown are based upon one {1 ) fixture being the minimum required for the number of persons Indicated or any fraction thereof.
2 Building categories not shown on this table shall be considered separately by the Authority Having Jurisdiction.
3 Drinldng fountains shall not be installed in toilet rooms.
4 Laundry trays. One (1) laundry tray or one (1) automatic washer standpipe for each dwelling unit or one (1) laundry tray or one (1) automatic washer standpipe, or
combination thereof, for each twelve (1 2) apartments. Kitchen sinks, one (1 ) for each dwelling or apartment unit.
5 For each urinal added in excess of the minimum required, one water closet may be deducted. The number of water closets shall not be reduced to less than two-thirds
(2/3) of the minimum requirement.
6 As required by ANSI Z4.1 , Sanitation In Places of Employment.
7 Where there is exposure to skin contamination with poisonous, infectious, or Irritating materials, provide one (1) lavatory for each five (5) persons.
8 Twenty-four (24) lineal inches (610 mm) of wash sink or eighteen (18) inches (457 mm) of a circular basin, when provided with water outlets for such space, shall be
considered equivalent to one (1 ) lavatory.
9 Laundry trays, one (1 ) for each fifty (50) persons. Service sinks, one (1 ) for each hundred (1 00) persons.
1 General. In applying this schedule of facilities, consideration shall be given to the accessibility of the fixtures. Conformity purely on a numerical basis may not result in an
Installation suited to the needs of the Individual establishment. For example, schools should be provided with toilet facilities on each floor having classrooms.
a. Surrounding materials, wall, and floor space to a point two (2) feet (61 mm) In front of urinal lip and four (4) feet (1 21 9 mm) above the floor, and at least
two (2) feet (61 mm) to each side of the urinal shall be lined with non-absorbent materials.
b. Trough urinals shall be prohibited.
11 A restaurant Is defined as a business that sells food to be consumed on the premises.
a. The number of occupants for a drive-in restaurant shall be considered as equal to the number of parking stalls.
b. Employee toilet facilities shall not be included In the above restaurant requirements. Hand-washing facilities shall be available In the kitchen for employees.
12 Where food Is consumed Indoors, water stations may be substituted for drinking fountains. Offices, or public buildings for use by more than six (6) persons shall have
one (1 ) drinking fountain for the first one hundred fifty (1 50) persons and one (1 ) additional fountain for each three hundred (300) persons thereafter.
13 There shall be a minimum of one (1) drinking fountain per occupied floor In schools, theatres, auditoriums, dormitories, offices, or public buildings.
14 The total number of water closets for females shall be at least equal to the total number of water closets and urinals required for males. This requirement shall not apply
to Retail or Wholesale Stores.
16
17
18
19
20
For smaller-type Public and Professional Offices such as banks, dental offices, law offices, real estate offices, architectural offices, engineering offices, and similar uses.
A public area In these offices shall use the requirements for IRetall or Wholesale Stores.
A unisex facility (one water closet and one lavatory) may be used when the customer occupant load for the dining area, Including outdoor seating area. Is 1 or less and
the total number of employees for the space is 4 or less.
Recreation or community room in multiple dwellings or apartment buildings, regardless or their occupant load, shall be permitted to have separate single-accommodation
facilities In common-use areas within tracts or multi-family residential occupancies where the use of these areas is limited exclusively to owners, residents, and their
guests. Examples are community recreation or multi-purpose areas in apartments, condos, townhouses, or tracts.
A drinking fountain shall not be required in occupancies of 30 or less. When a drinking fountain is not required, then footnotes 3,12, and 13 are not applicable.
[BSC, DSA-AC, DSA-SS, HCD & OSHPD] In accordance with Sections 108. 7 and 301.2, the Authority Having Jurisdiction may approve alternative design criteria when
determining the minimum number of plumbing fixtures.
Fixtures need to not be located within the locked room provided a communication system or procedure is in effect to give the minor immediate access to a lavatory, toilet
and drinking fountain.
46
PLUMBING FIXTURES AND FIXTURE FITTINGS
Table A
Table A. Occupant Load Factor:
Occupancy*,
Occupant Load Factor (square feet)
(CBC 2001 , Table A-29A)
Group A
1. Auditoriums, convention halls, dance floors,
lodge rooms, stadiums, and casinos
(use 1/2 "one-half" tlie number of fixed seating)
2. Conference rooms, dining rooms, drinking
establisliments, exhibit rooms, gymiiasiums,
lounges, stages, and similar uses, including
restaurants classified as Group B occupancies
3. Worsliip places; principal assembly area,
educational and activity unit
(use 1/2 "one-haH" flie number of fixed seating)
Group B
Office or public buildings (area accessible to
the public)
Group E
Schools for daycare, elemeiitary, secondary
Educational Facilities Other than Group E
Colleges, universities, adult centers, etc.
Group F
Workshops, fotmdries and similar establishments
Group H
Hazardous materials fabrication and storage
Group I
Hospital general use area, healtli care facilities
Group M
Retail or Wholesale stores
Group R
Congregate residence. Group R-1
Group S
Warehouse
15
(where no fixed seating is provided)
30
30
(where no fixed seating is provided)
200
50
50
2,000
2,000
200
200
200
5,000
Any uses not specifically listed shall be based on similar uses listed in tliis table.
For buUdirig or space witli mixed occupancies, use appropriate occupancy group for eadi area (for
example, a school may have an "A" occupancy for the gymnasium, a "B" occupancy for the office, an
"E" occupancy for the classrooms, etc.) _ i__;_: _ _ _
Accessory areas may be excluded (for example: hallway, restroom, stair enclosure)
47
Table 4-2
2007 CALIFORNIA PLUMBING CODE
TABLE 4-2
[For OSHPD 1,2,3 & 4] l\/linimum Plumbing Facilities
Space
Handwashing
Fixture
Scrub
Sinks
Toilets
Bathtubs
or
Showers
Service
Sinks'
Clinic
Sinks
OSHPD 1
General Acute Care Hospitals'-" and
Acute Psychiatric Hospitals'-"
Administration Space
Loooy
Male
?
1
Female
V
1
Airborne infection isolation rooms^
25
f
f
Cardiac Catherization
Procedure room
r
7
Staff clothing changing areas
7
7
1 shower
Central aterile Supply
V
Cesarean/delivery Service Space
Lat)orHooms
1
P
1
Recovery Room
1
1
Drug distribution station
7
Cesarean operating room"
2
Delivery room"
1
Staff clothing changing areas
Male
7
1
1
Female
7
7
1
Staff lounge toilet
7
7
LDR or LDHP room
7
7
1
Waiting room
r
p
Clinical Laboratory Service Space"
7
Dietetic Service Space
7
Toilets and lockers
7
Emergency Service
Standby emergency medical service
Lobby -public toilets
7
7
Treatment room
7
Open plan
1:4 cubicles
Patient toilet
7
7
Administrative center/nurses' station
7
Observation units
1:4 cubicles
Basic emergency medical service
Public waiting
7
Treatment areas, more than 8
1
2
Treatment room
7
Open plan
1:4 cubicles
Emergency surgery. Cystoscopy,
or Special procedure room
7
V
7
Employee dressing rooms
Male r
1
Female
f
1
Exam and treatment rooms
1
Housekeeping room
7
Intensive Care Units'
1
Open plan
1:3 beds
Patient rooms
1
Staff lounge
P
1
Newborn Intensive Care UnltlNICU)
1:4 bassinets"
1
Control station
7
Stafflounge
V
1
Laboratories
1"
7
Laundry
Soiled linen
1
Medicine preparation rooms or station
1
48
PLUMBING FIXTURES AND FIXTURE FITTINGS
Table 4-2 Gont.
Morgue and Autopsy
1
Nourishment station or center
Nuclear medicine
Procedure room
Mold room
Radiotherapy
Heception/waitmg area
7
Nursing service space
Administrative center or nurse station
Examination or treatment room
Patient room
Patient toilet and bath facilities"
12
1:4 beds
7;72'«
Administrative center/nursing station
7
Multi-purpose rooms"
7
Central bathing facility
7
Staff toilet room
V
7
Medicine preparation room
1
Nburisffment area
7
Nurses' stations^ or administration center
;
Nurseries
Well Newborn
1:6 bassinets
Exam/Workrooms
1
Outpatient service space
7
Outpatient surgery
/
Endoscopy examination room
1
Pediatric and Adolescent Unit
Patient room
1
7
Play areas toilet room
1
7
Central bathing toilet room
1
7
Pharmacy
;a
7
Postanesthesia care units (PACU]
/
7
Protective environment room^
2^
r
r
Psychiatric Nursing Unit
Patient room
1
Patienttoilet and bath facilities"
r
1
1:12"
Radiological/Imaging Services Space
1
Computerized tomography (CTI
1'
7
Ultrasound
?
7
Angiography
r
r
7
Flouroscopy"
r
7
Patienttoilet
r
7
Stafftoiiets
?
7"
Rehabilitation Therapy Space
Patient Waiting area
Male toilet room
r
7
Female toilet room
?
7
Training toilet
7
Physical therapy service space
1
Occupational therapy service space
1
Speech pathology
7
Renal Dialysis Service Space
1:4 stations
7
Dialysis Isolation Room
7
Nurses' station
7
Medication dispensing
1
Home training room
1
Repair room
7
1
Patienttoilet
1
7
Stafflounge
1
7
1 shower
Waiting room toilet
1
7
Surgery Service Space
2?
Staff clothing change areas
Male
?
T
7
1 shower
—
_
Female
r
7
7 shower
Clean-up roofns
1
Substerile area '
7
Anesthesia workroom
7"
Soiled workroom or soiled holding
7
7
49
Table 4-2 Cont.
2007 CALIFORNIA PLUMBING CODE
Utility Room
dean'
1
Soiled'
1
/"
0SHPD2
Sliilled Nursing or Intermediate
Care Facilities
Nurses' Station
1
Utility room
/
Clean
P<
Soiled
P
7
Patient beds
Its'
1:6
1:20
Administration space - public toilets
1
Employee lockers
Male V
7
Female
1'
7
Outpatient waiting room toilet room
P
7
Laundry 1
Dietetic service space
Kitchen
7
Food serving area
7
Employee washroom
7
Airborne Infection Isolation roonf
/
F
r
Protective environment roorrfi
V
F
F
Medicine rooms"
f
Optional services
V
Physical therapy
7
1
Occupational therapy
7
1
Speech pathology/Audiology
7
Housekeeping room
7
1
0SHPD3
Licensed Clinics and any freestanding
building under a hospital license where
outpatient clinical services are provided
Examination and treatment rooms
7
Primary care clinic
7
Utility room
7"
Birthing Clinic
7
7
Clean-up room
7
Birthing room toilet room
F
1
Shower
1
Housekeeping room
7
Surgery Clinic
2
7
Clean-up room
7
Outpatient changing
F
1
Postanesthesia recovery
7
Housekeeping room
7
Nurses' control area
7
Staff clothing area
Male
7
7
Female
/
7
Chronic Dialysis
7
Nurse station
1:8 patients
Patient toilet room
F
p
Stafflockers
F
7
Airborne isolation room
^
F
F
Utility room
7
1
Home training
7
Rehabilitation Clinics
Physical therapy space
7
Occupational therapy
7
Speech pathology/Audiology'
7
7
Housekeeping room
7
50
PLUMBING FIXTURES AND FIXTURE FITTINGS
Table 4-2 Cont.
0SHPD4"
Correctional Treatment Centers'
Nurses' station
1
Utility Room
1
Clean
1"
Soiled
F
Patients beds
V.ff
1:6
1:12
Employee dressing rooms
Male r
1
Female
r
1
Outpatient services
1
Airborne Infection isolation room'
r
r
r
Protective environment room"
r
r
f
IVIedlcine rooms"
F
Treatment and Exam Rooms
1
Toilets
Patient"
l.-S'
1:B
1:12
Staff V
1
Employee dressing rooms and lockers
Male V
1
Female
r
1
Outpatient services
Waiting area
f
7
Housekeeping room
1
Soiled utility room
1
Pharmacy
1
7 Each department or nursing unitstiallbs sen/edbya hcusBl<eeping room equipped with a service sink. Departments may share service
closets provided the departmental services are compatible. The fixtures listed cannot be shared.
2 Conventional spouts and controls on hot-end cold-water supplies are acceptable. Aerators are not permitted. Nourishment stations
shall have a handwashing fixture in or immediately accessible from the nourishment area.
3 A minimum of two scrub sinks shall be provided in a surgical unit containing one operating room. Four scrub sinks shall be provided in
surgical units containing two operating rooms. One additional scrub sink shall be provided per each additional operating room.
4 Thescrubsinkisinadditiontotherequirednumberforsurgeries. :
5 The following fixtures shall be provided in airborne infection or protective environment rooms of hospitals only:
a. Within an adjoining toilet room, a handwashing fixture, a shower containing a seat or a space for a shower chair, and water closet
equipped with bedpan flushing attachment with a vacuum breaker.
b. A handwashing fixture within a separate anteroom.
Exception: 7. Chemical dependency recovery hospitals. 2. In emergency department, separate toilet/shower not required.
6 The following fixtures shall be provided in isolation rooms of correctional treatment centers only:
a. Within an adjoining toilet area, a handwashing fixture, a shower containing a seat or a space for a shower chair, and water closet
equipped with bedpan flushing attachment with a vacuum breaker
b. A handwashing fixture within a separate anteroom.
7 Includes burn center spaces and acute respiratory-care service spaces, coronary-care service spaces.
8 A toilet room with handwashing fixture shall adjoin each fluoroscopy room.
9 One toilet with lavatory and one shower may serve more than one two labor rooms.
10 One additional scrub sink per cesarean or delivery operating room.
1 1 Provide emergency eye-wash and shower.
12 Handwashing fixtures shall be located in convenient locations throughout the space.
13 Fixtures serving individual patient rooms shall not be considered as meeting the required ratios for bedrooms not served by individual
adjoining toilet or bathrooms.
14 The clinic sink maybe deleted if all bedrooms in the nursing unit ere provided with adjoining toilets with bedpan flushing devices.
15 Conventional controls on hot-and cold-water supplies are acceptable. The water discharge points shall be 127 millimeters (5 inches!
above the fixture rims, and equipped without a Aerators are not permitted.
16 A minimum of one bathtub is required on each floor of an acute care or acute psychiatric hospital providing skilled nursing or
intermediate care services.
77 In a multiple-bed room, every bed position shall be within 20 feet (6 meters) of a hands-free handwashing fixture. Where an individual
room concept is used, a handwashing fixture shall be provided within each infant care room.
18 When three or more procedure rooms are provided.
19 If a separate medicine room is provided, the room shall be equipped with a sink in addition to the nurses' station handwashing fixture.
Hot-water supplies are optional.
20 Chemical dependency recovery hospitals are only required to provide handwashing fixtures for exam rooms and kitchens.
All btherfixtures may be equipped per NOTE Footnote 2. '
21 Handwashing fixtures may be deleted if room is storage and holding only.
22 Handwashing fixtures may be deleted if room is temporary holding of soiled materials.
23 Toilet shall be equipped with a bedpan flushing attachment
24 Optional services approved by the licensing agency shall comply with the applicable space requirements of OSHPD 1 and Z
25 Shall be provided in each separate room where open medication is handled.
26 Conveniently accessible throughoutthe unit
51
Table 4-3 - Table 4-4
2007 CALIFORNIA PLUMBING CODE
TABLE 4-3
Urinals (Trough urinal
Drlnlang
Water Closets
to individual
Fountains
Type of Building
or Occupancy
(Fixtures per Person)
urinal equivalence)
Male
Lavatories (Fixtures
per Person)
Bathtubs or Showers
Fixtures per Person)'
(Fixtures
perPersonf
Male Female
Nonindustriai— office
1 1-15 1 1-15
Length of Number of
1 1-15
1:10 persons per shift
_
buildings, public
2 16-35 2 16-35
trough urinal individual
2 16-35
required to shower
buildings and similar
3 36-55 3 36-55
urinals
3 36-60
establishments
4 56-80 4 56-80
24" (610 mm) 1
4 61-90
5 81-110 5 81-110
36" (914 mm) 2
5 91-125
6 111-150 6 111-150
48" (1219 mm) 2
1 additional for
1 additional for
60" (1524 mm) 3
each additional 4
each additional 40
72" (1879 mm) 4
employees or fraction
employees or fraction
thereof
thereof
Industrial-factories,
1 1-15 1 1-15
24" (610 mm) 1
1 to 100
1:10 persons per shift
_
warehouses, loft
2 16-35 2 16-35
36" (914 mm) 2
employees
required to shower
buildings and similar
3 38-55 3 36-55
48" (1219 mm) 2
1 per 10
establishments
4 56-80 4 56-80
60" (1524 mm) 3
5 81-110 5 81-110
72" (1829 mm) 4
Over 100
6 111-150 6 111-150
employees
1 additional for
1 additional for
each additional 40
each addiVonal 15
employees or fraction
employees or fraction
thereof
thereof
/ The figures showr} are based on one fixture being the minimum required for the number of persons indicated or any fraction thereof
2 Each water closet shall occupy a separate compartment which shall be equipped with a door, door latch and clothes hook. The door and the walls or partitions between fixtures shall
be sufficient to assure privacy.
3 Drinking fountains shall not be located in toilet rooms.
4 Washing facilities shall be reasonably accessible to ail employees.
5 Toilet facilities shall be accessible to the employees at ail times. Where practicable, toilet facilities should be within 200 feet (61 m) of locations at which workers are regularly
employed and should not be more than one lioor-to-lloor flight of stairs from working areas.
6 Urinals may be installed instead of water closets in toilet rooms to be used only by men provided that the number of water closets shall not be less than two thirds of the minimum
number of toilet facilities specified. The length of trough urinals to the equivalent number of Individual urinals shall be based on the above table.
7 When there are less than live employees, separate toilet rooms for each sex are not required provided toilet rooms can be locked from the Inside and contain at least one water closet
8 Twenty-four linear inches of wash sink or 18 Inches of circular basin, when provided with water outlets for such space, shall be considered equivalent to one lavatory.
Exception: The requirements of Table C-3 do not apply to mobile crews or to normally unattended work locations provided employees at these locations have Immediately available
transportation to nearby toilet facilities which meet the requirements of Table C-3.
TABLE 4-4
Type of Building
or Occupancy'
Water Closets
(Fixtures per Person)
Urinals
(Fixtures per Maie)
Lavatories
(Fixtures per Person)
BaUubs or Showers
(Fixtures per Person)
Drinking Fountains
(Fixtures per Person)
Day Use
Public Beaches"
Male Female
1 1-100 1 1-100
No sex designated
1 1-500
Minimum of 2
May be substituted for
up to two-thirds of the
water closets required
Picnic Areas
Male Female
1 1-50 1 1-50
Overnight Use
Public Beaches?
1 1-7.5 campsites'
1 1-7.5 campsites'
May be substituted for
up to one-third of the
water closets requlrerf
1 1-12.5 campsites'
Organized Camps
1 1-1ff
1 1-15
1 1-156
Minimum 1 per camp
1 Toilets shall be located in accordance with actual use patterns on the beach. The reasonable intent of the toilet requirements is that it should apply on the
basis of average daily use during periods of peak use. The health officer may determine how many days the population standard may be exceeded.
2Laundry facilities are not required, but if they are provided, must be a minimum of two laundry trays or a washing machine.
3 Toilet facilities shall not be farther than 400 feet from any lot or campsite.
4 Showers are not required, but it provided, they shall be provided on the indicated ratio. Outdoor rinse-off showers may be cold water only.
5 Toilets shall be located within 300 feet from the living accommodations they sen/e.
eShowers shall be provided in the living area or in a centrally located structure.
Exception: Intermittent short-term organized camps are not required to provide shower facilities, but it provided, they shall comply with this part.
52
CHAPTER 5
WATER HEATERS
Part I
501.0 General.
The regulations of this chapter shall govern the
construction, location, and installation of fuel-
burning and other water heaters heating potable
water, together with all chimneys, vents, and their
connectors. Tlie minimum capacity for water heaters
shall be in accordance with tlie first hour ratiiTg listed
in Table 5-1. All design, construction, and work-
manship shall be in conformity with accepted
engineeriiig practices, manufacturer's installation
instructions, and applicable standards and shall be of
such character as to secure the results sought to be
obtained by this code. No water heater shall be
hereinafter installed that does not comply in all
respects with tlae type and model of each size thereof
approved by the Authority Having Jurisdiction. A
list of accepted gas equipment standards is included
in Table 14-1.
502.0 Definitions.
502.1 Appliance Categorized Vent Diameter/Area.
The minimum vent area/ diameter permissible for
Category I appliances to maintain a nonpositive vent
static pressure when tested in accordance with
nationally recognized standards. [NFPA 54:3.3.7]
502.2 Chimney. (See also Gas Vent, and Venting
System.) One or more passageways, vertical or
nearly so, for conveying flue or vent gases to the
outside atmosphere. [NFPA 54: 3.3.17]
502.3 Ciiimney, Factory-Built. A cliimney composed
of listed factory-built components assembled in
accordance with the terms of listing to form the
completed diimney. [NFPA 54: 3.3.17.2]
502.4 Chimney, Masonry. A field-constructed
cliimney of solid masonry units, bricks, stones, listed
masonry chimney units, or reinforced portland
cement concrete, lined with suitable chimney flue
liners. [NFPA 54: 3.3.17.3]
502.5 Chimney, iVIetal. A field-constructed chimney
of metal. [NFPA 54: 3.3.17.4]
502.6 Combustible iViateriai. As pertaining to
materials adjacent to or iii contact witli heat-producing
appliances, vent connectors, gas vents, diimneys, steam
and hot water pipes, and warm air ducts, shall mean
materials made of or surfaced witii wood, compressed
paper, plant fibers, or other materials that are capable
of being ignited and burned. Such material shall be
considered combustible even though flame-proofed,
fixe-retardant treated, or plastered. [NFPA 54: 3.3.65.1]
502.7 Direct-Vent Appliances. Appliances that are
constructed and installed so tliat aU air for combustion
is derived directly from the outside atmosphere and
all flue gases are discharged to the outside
atmosphere. [NFPA 54- 3.3.6.3]
502.8 Fiue Collar. That portion of an appliance
designed for the attachment of a draft hood, vent
connector, or venting system. [NFPA 54: 3.3.45]
502.9 Gas Vent, Type B. A vent for venting-listed
gas appliances witli draft hoods and otlier Category I
appliances listed for use with Type B gas vents.
[NFPA 54: 3.3.105.2.2]
502.10 Gas Vent, Type L. A vent for venting
appliances listed for use with Type L vents and
appliances listed for use with Type B gas vents.
[NFPA 54: 3.3.105.2.4]
502.11 Indirect-Fired Water Heater. A water heater
consisting of a storage taiik equipped witli an internal
or external heat exchanger used to transfer heat from
an external source to heat potable water. The storage
tank may contain heated potable water or water
supplied from an external source, such as a boiler.
502.12 Vent. A passageway used to convey flue gases
from gas utilization equipment or their vent connectors
to the outside atmosphere. [NEPA 54: 3.3.105]
502.13 Vent Connector. The pipe or duct that
coraiects a fuel-gas-burning appliance to a vent or
cliimney. [NFPA 54: 3.3.106]
TABLE 5-V FIRST HOUR RATING
Number of Bathrooms
1 to 1.5
2 to 2.5
3 to 3.5
Number of Bedrooms
1
2
3
2
3
4
5 -
-3-
—4
- 5-
-6
First Hour Rating,^ Gallons
42
54
54
54
67
67
80
67
80
80
80
Note:
1 The first hour rating is found on the "Energy Guide" iable.
2 Non-storage and soiar water heaters shail be sized to meet the appropriate first hour rating as shown in the tabie.
53
502.14-505.6
2007 CALIFORNIA PLUMBING CODE
502.14 Venting System. A continuous open
passageway from the flue collar or draft hood of a
gas-btirning appliance to the outside atmosphere for
the purpose of removing flue or vent gases. [NFPA
54: 3.3.98.7]
502.15 Water Heater. An appliance for supplying hot
water for domestic or commercial purposes. [NFPA
54: 3.3.55.7]
503.0 Permits.
It shall be unlawful for any person to install, remove, or
replace or cause to be installed, removed, or replaced
any water heater without first obtaining a permit from
the Authority Having Jurisdiction to do so.
504.0 Inspection.
504.1 Inspection of Chimneys or Vents. This
inspection shall be made after all chimneys, vents, or
parts thereof, authorized by the permit, have been
installed and before any such vent or part thereof has
been covered or concealed.
504.2 Final Water Heater Inspection. This
inspection shall be made after all work authorized by
the permit has been installed. The Authority Having
Jurisdiction will make such inspection as deemed
necessary to be assured that the work has been
installed in accordance with the intent of this code.
No equipment or part thereof shall be covered or
concealed until the same has been inspected and
approved by the Authority Having Jurisdiction.
505.0 Water Heater Requirements.
505.1 Location. Water heater installations in bed-
rooms and bathrooms shall comply with one of the
foUowing [NFPA 54: 10.28.1]:
(1) Fuel-burning water heaters may be installed in a
closet located in the bedroom or bathroom
provided the closet is equipped with a listed,
gasketed door assembly and a listed self-closing
device. The self-closing door assembly shall
meet the requirements of Section 505.1.1. The
door assembly shall be installed with a threshold
and bottom door seal and shall meet the
requirements of Section 505.1.2. All combustion
air for such installations shall be obtained from
the outdoors in accordance with Section 507.4.
The closet shall be for the exclusive use of the
water heater.
(2) Water heater shall be of the direct vent type.
[NFPA 54:10.28.1.2]
505.1.1 Self-Closing Doors. Self-closing doors
shall swing easily and freely and shall be
equipped with a self-closing device to cause the
door to close and latch each time it is opened.
The closing mechanism shall not have a hold-
open feature. [NFPA 80:2-1.4.1]
505.1.2 Gasketing. Gasketing on gasketed doors
or frames shall be furnished only in accordance
with the published listings of the doors, frame, or
gasketing material manufacturer.
Exception: Where acceptable to the Authority
Having Jimsdiction, gasketing of noncombustible
or limited-combustible material (see NFPA 220)
Standard on Types of Building Construction)
shall be permitted to be applied to the frame,
provided closing and latching of the door are not
inhibited. [NFPA 80:2-4.8]
505.2 Water heaters of other than the direct-vent
type shall be located as close as practical to the
chimney or gas vent. [NFPA 54:9.28.1.2]
505.3 Clearance.
505.3.1 The clearances shall not be such as to
interfere with combustion air, draft hood clearance
and relief, and accessibility for servicing. Listed
water heaters shall be installed in accordance with
their listings and the manufacturers' instructions.
[NFPA 54:10.28.2.1]
505.3.2 Unlisted water heaters shall be installed
with a clearance of 12 inches (300 mm) on all sides
and rear. Combustible floors under unlisted
water heaters shall be protected in an approved
manner. [NFPA 54:10.28.2.2]
505.4 Pressure-Limiting Devices. A water heater
installation shall be provided with overpressure
protection by means of an approved, listed device,
installed ki accordance with the terms of its listing and
the manufacturer's instructions. [NFPA 54: 10.28.3]
505.5 Temperature-Limiting Devices. A water
heater installation or a hot water storage vessel
installation shall be provided with overtemperature
protection by means of an approved, listed device
installed in accordance with the terms of its listing and
the manufacturer's instructions. [NFPA 54: 10.28.4]
505.6 Temperature, Pressure, and Vacuum Relief
Devices. The installation of temperature, pressure,
and vacuum rehef devices or combinations thereof,
and automatic gas shutoff devices, shall be installed
in accordance with the terms of their listings and the
manufacturers' instructions. A shutoff valve shall not
be placed between the relief valve and the water
heater or on discharge pipes between such valves
and the atmosphere. The hourly Btu discharge
capacity or the rated steam relief capacity of the
device shall not be less than the input rating of the
water heater. [NFPA 54: 10.28.5]
54
WATER HEATERS
506.0 - 507.1
506.0 Oil-Burning and Other Water IHeaters.
506.1 Water heaters deriving heat from fuels or types of
energy otlTer than gas shall be constructed and installed
in accordance with approved standards. Vents or
chimneys for such appliances shall be approved
types. All adequate supply of air for combustion and
for adequate ventilation of heater rooms or
compartments shall be provided. Each such appliance
shall be installed in a location approved by the
Authority Having Jurisdiction and local and state
fire-prevention agencies.
506.2 All storage-type water heaters and hot water
boilers deriving heat from fuels or types of energy
other than gas, shall be provided with, in addition to
tlie primary temperature controls, an overtemperature
safety protection device constructed, listed, and
installed in accordance with nationally recognized
applicable standards for such devices and a
combination temperature and pressure-relief valve.
506.3 Oil-fired water heaters shall be installed in
accordance with NFPA 31, Standard for the Installation
of Oil-Burning Equipment-
506.4 Indirect-Fired Water Heaters
506.4.1 Indirect-fired water heaters shall
conform to applicable sections of the ASME
BoUer and Pressure Vessel Code, or to one of tl\e
otlier applicable standards shown in Table 14-1.
Each water heater shall bear a label in
accordance with ASME requirements, or an
approved testing agency, certifying and attesting
that such equipment has been tested and
inspected and meets the requirements of the
applicable standards or code.
506.4.2 Indirect-fired water heater that incor-
porate a single-wall heat exchanger shall meet
all of the following requirements:
(1) Connected to a low-pressure hot water
boiler lim.ited to a maximum of 30 psig by
an approved safety or relief valve.
(2) Heater transfer medium is either potable
water or contains fluids having a toxicity
rating or Class of 1.
(3) Bear a label with the word "Caution,"
followed by the following statements:
(a) The heat-transfer medium must be
water or other nontoxic fluid having a
toxic rating or Class of 1 as listed in
Clinical Toxicology of Commercial
Products, 5th edition.
(b) The pressure of the heat-transfer
medium must be limited to a maximum
of 30 psig by an approved safety or
relief valve.
— Note; The word "Caution" and the:
statements in letters having a minimum,
uppercase height of 0.120 inch (3.05
mm). The minimum vertical spacing
between lines of tj^e shall be 0.046 inch
(1.17 mm). Lowercase letters shall be
compatible with the uppercase letter
size specification.
507.0 Air for Combustion and Ventilation.
507.1 General.
507.1.1 Air for combustion, ventilatioii, and
dilution of flue gases for gas utilization equipment
installed in buildings shall be obtained by
application of one of the methods covered in
Sections 507.2.1 through 507.7. Gas utilization
equipment of other than natural draft and
Category I vented appliances shall be provided
with combustion, ventilation, and dilution air in
accordance with the equipment manufacturer's
ii'\structioi'\s. Wl^ere iiTfiltiation does not provide fl\e
necessary air, outdoor air shall be introduced in.
accordance wifli metliods covered in Sections 507.4
fl-irough 507.7. [NPPA 54:9.3.1.1]
Exception No. 1: This provision shall not
apply to direct-vent appliances. [NFPA 54-
2002:8.3.1.1]
Exception No. 2: Type 1 clothes dryers that
are provided with make-up air in
accordance with section NFPA 54:10.4.3.
507.1.1.1 Clotlies Dryer. A device used to
dry wet laundry by means of heat derived
from the combustion of fuel gases. [NFPA
54:3.3.18]
507.1.1.2 Clothes Dryer, Type 1. Primarily
used in family living environment. May-
or may not be coin-operated for public use.
[NFPA 54:3.3.18.1]
507.1.1.3 Exhausting to the Outdoors.
Type 1 and Type 2 clothes dryers shall be
exhausted to tiie outside air. [NFPA 54:10.4.2]
507.1.1.4 Provisions for Make-Up Air.
Make-up air shall be provided for Type 1
clothes dryers in accordance with the
manufacturers' installation instructions.
[NPPA 54:10.4.3.1]
507.1 .2 Gas appliances of other than natural
draft design and other than Category I vented
appliances shall be provided with combustion,
ventilation, ai\d dilution air m accordance with
the appliance manufacturer's instinictions.
[NFPA 54:9.3.1.2]
507.1 .3 Wliere used, a draft hood or a barometiic
draft regulator shall be installed in the same
room or enclosure as the equipment served so as
to prevent any difference in pressure between tiie
hood or regulator and the combustion air supply.
- [NFPA 54:9.3.1.4] :
507.1.4 Makeup air requirements for the
operation of exhaust fans, kitchen ventilation
systems, clotlies dryers, and fireplaces shall be
considered in determining the adequacy of a
55
507.1 -507.4
2007 CALIFORNIA PLUMBING CODE
space to provide combustion air requirements.
[NFPA 54:9.3.1.5]
507.2 Indoor Combustion Air. The required
volume of indoor air shall be determined in
accordance with Sections 507.2.1 or 507.2.2 except
that where the air infiltration rate is fcaown to be less
than 0.40 ACH, Section 507.2.2 shall be used. The
total required volume shall be the sum of the
reqtiired voltmie calculated for all appliances located
within the space. Rooms communicating directly
with the space in which the appliances are installed
through openings not furnished with doors, and
through combustion air openings sized and located
in accordance with Section 507.3 are considered a part
of the required volume. [NFPA 54:9.3.2]
507.2.1 Standard iWethod.The minimum
reqxiired volume shall be 50 cubic feet per 1,000
Btu/hour (4.8 mVkW). [NFPA 54:9.3.2.1]
507.2.2 Known Air infiltration Rate Method.
Where the air infiltration rate of a structure is
known, the minimum required volimie shall be
determined as follows [NFPA 54:9.3.2.2]:
(1) For appliances having other than fan-assisted,
combustion systems: calculate using Equation
5-1 but no smaller than 35 cubic feet per 1,000
Btu/hour (3.4 mVkW). [NFPA 54:9.3.2.2(1)]
(2) For fan-assisted combustion system appliances,
calculate using Equation 5-2 but no smaller
than 25 cubic feet per 1,000 Btu/hour (2.4 mVkW).
[NFPA 54:9.3.2.2(2)]
Equation 5-1:
Required Volume of;,g^ > (21fP/ACH)x {l^tj^g^/ 1,000 Bta/h.)
Equation 5-2:
Required Volumeyjj„ > (15ff /ACH)x (Iyjj„/ 1,000 Btu/h)
Where:
Igther ~ ^^^ Appliances other than Fan-Assisted
Input in Btu/hour
li:^^ = Fan- Assisted Appliance Input in Btu/hour
ACH = Air Change per Hour (Percent of volume of
space exchanged per hour, expressed as a
decimal)
507.3 indoor Opening Size and Location.
Openings used to connect indoor spaces shall be
sized and located in accordance with the following
[NFPA 54:9.3.2.3]:
(1) Combining spaces on the same story. Each
opening shall have a minimum free area of 1
in.Vl,000 Btu/h (2200 mmVkW) of the total
input rating of all gas utilization equipment
in the space, but not less than 100 in.^
(0.06 m^). One opening shall commence
witinin 12 inches (300 mm) of the top, and one
opening shall commence within 12 inches
(300 mm) of the bottom of the enclosure
[see Figure 5-12]. The minimum dimension of
air openings shall be not less than 3 inches
(80mm). [NFPA 54:9.3.2.3(1)]
(2) Combining spaces in different stories. The
volumes of spaces in different stories shall be
considered as commimicattng spaces where
such spaces are connected by one or more
openings ia doors or floors having a total
minimum free area of 2 in.^/ 1,000 Btu/h
(4,400 mmVkW) of total input rating of all |
gas utilization equipment. [NFPA 54:8.3.2.3(2)]
507.4 Outdoor Combustion Air. Outdoor combustion
air shall be provided through opening(s) to the
outdoors in accordance with methods Sections 507.4.1
or 507.4.2. The minimtmi dimension of air openings
shall not be less than 3 inches (80 mm). [NFPA 54:9.3.3]
507.4.1 Two Permanent Openings MetPiod:
Two permanent openings, one commencing
within 12 inches (300 mm) of the top and one
commencing within 12 inches (300 mm) of the
bottom of the enclosure shall be provided. The
openings shall communicate directly, or by
ducts, with the outdoors or spaces that freely
commimicate with the outdoors as follows. [See
Figure 5-7.][NFPA 54:9.3.3.1]
(1) Where directly communicating with the
outdoors or where communicating to the
outdoors through vertical ducts, each
opening shall have a minimxim free area of 1
in.V4000 Btu/h (550 mmVkW) of total kiput
rating of all equipment in the enclosure. [See
Figures 5-8 and 5-9.] [NFPA 54:9.3.3.1(1)]
(2) Where communicating with the outdoors
through horizontal ducts, each opening shall
have a minimum free area of 1 in.V2,000
Btu/h (1,100 mmVkW) of total input rating
of all equipment in the enclosure. [See
Figure 5-10] [NFPA 54:9.3.3.1(2)]
507.4.2 One Permanent Opening IVIetiiod: One
permanent opening, commencing within 12
inches (300 mm) of the top of the enclosure, shall
be provided. The equipment shall have clearances
of at least 1 inch (25 mm) from the sides and back
and 6 inches (160 mm) from the front of the
appliance. The opening shall directly
communicate with the outdoors or shall
communicate through a vertical or horizontal
duct to the outdoors or spaces that freely
communicate with the outdoors [see
Figure 5-11] and shall have a minimum free area of
the foUowing [NFPA 54:9.3.3.2]:
(1) 1 in.V3000 Btu/h (700 mmVkW) of the
56
WATER HEATERS
507.4 - 507.9
total input rating of all equipment located in
the enclosure, and [NFPA 54:9.3.3.2(1)]
(2) Not less than the sum of the areas of all vent
connectors in the space. [NFPA 54: 9.3.3.2(2)]
507.5 Combination indoor and Outdoor Com-
bustion Air. Tlie use of a combination of indoor and
outdoor combustion air shall be in accordance with
Sections 507.5.1, 507.5.2 and 507.5.3 [see example
calculation in NFPA 54 Annex J and this chapter -
Part II] [NFPA 54:9.3.4].
507.5.1 indoor Openings. Where used,
openings connecting the interior spaces shall
comply with Section 507.3. [NFPA 54:9.3.4(1)]
507.5.2 Outdoor openings shall be located in
accordance with Sections 507.4.1 or 507.4.2.
[NFPA 54:9.3.4(2)]
507.5.3 Outdoor Openings Size. The outdoor
openings size shall be calculated in accordance
with the foUowing [NFPA 54:9.3.4(3)]:
(1) The ratio of interior spaces shall be the
available volume of aU communicating spaces
divided by tlie required volume.
(2) The outdoor size reduction factor shall be 1
minus the ratio of interior spaces.
(3) The minimum size of outdoor openings
shall be the full size of outdoor openings
calculated in accordance with Sections
507.4.1 or 507.4.2, multiplied by the
reduction factor. The minimum dimension
of air openings shall not be less than 3 inches
(80 mm). [NFPA 54:8.3.4(3)(c)]
507.6 Engineered Instaliations. Engineered
combustion air installations shall provide an
adequate supply of combustion, ventilation, and
dilution air and shall be approved by the Authority
Haviiig Jurisdiction. [NFPA 54: 9.3.5]
507.7 i\/leciianicai Combustion Air Suppiy. Wliere
all combustion air is provided by a mechanical air
supply system, tlie combustion air shall be supplied
from outdoors at the minimum, rate of 0.35 fee^/min
per 1,000 Btu/h (0.034 mVmin per kW) for all
appliances located within the space.
507.7.1 Where exhaust fans are installed,
additional air shall be provided to replace the
exliausted air. [NFPA 54:9.3.6.1]
507.7.2 Each of the appliances served shall be
interlocked to the mechanical air supply
system to prevent main burner operation
where the mechanical air supply system is not
in operation^. [NFPA 54:9,3.6.2]
507.7.3 Where combustion air is provided by
tlie building's mechanical ventilation system, the
system shall provide the specified combustion
air rate in addition to the required ventilation
air. [NFPA 54: 9.3.6.3]
507.8 Louvers Grilles and Screens.
(A) Louvers and Grilles. The required size of
openings for combustion, ventilation,and
dilution air shall be based on tlie net free area
of eadi opening. Wliere tlie free area tlirough
a design of louver or grille is known, it shall
be used in calculating the size opening
required to provide the free area specified.
Where the design and free area are not
known, it shall be assumed that wood louvers
will have 25 percent free area and metal
louvers and grilles will have 75 percent free
area. Nonmotorized louvers and grilles
shall be fixed in the open position. [NFPA
54:9.3.7.1]
(B) Screens. Screens shall not be smaller than
1/4-inch mesh. [NFPA 54:9.3.7.2]
(C) Motorized louvers shall be mterlocked with
the equipment so they are proven in the full
open position prior to main burner ignition
and during main burner operation. Means
shall be provided to prevent tlie main burner
from igniting should the louver fail to open
during burner start-up and to shut down the
main burner if the louvers close during
burner operation. [NFPA 54: 9.3.7.3]
507.9 Combustion Air Ducts. Combustion air ducts
shall comply with tlie following:
(1) Ducts shall be of galvanized steel or a
material having equivalent corrosion resis-
tance, strength, and rigidity. [NFPA 54:9.3.8.1]
Exception; Within dwelling units, un-
obstructed stud and joist spaces shall not be
proliibited from conveying combustion air,
provided that not more than one fireblock is
removed.
(2) Ducts shall terminate in an unobstructed
space, allowing free movement of combustion
air to the appliances. [NFPA 54:9.3.8.2]
(3) Ducts shall serve a single space.
|NFPAM:9.3.8.3]
(4) Ducts shall not service both upper and
lower combustion air openings where both
such openings are used. The separation
between ducts serving upper and lower
combustion air openings shall be maintained
to file source of combustion air. [NFPA 54:9.3.8.4]
(5) Ducts shall not be screened where termi-
nating in an attic space. [NFPA 54:9.3.8.5]
(6) Intakes for combustion air ducts located
exterior to the building shall have the lowest
side of the combustion air intake openings
located at least 12 indies (300 mm) vertically
from the adjoining grade level.
57
507.4 - 508.7
2007 CALIFORNIA PLUMBING CODE
(7) Horizontal upper combustion air ducts shall
not slope downward toward the source of
combustion air. [NFPA 54:9.3.8.6]
(8) The remaining space surrounding a
chimney liner, gas vent, special gas vent, or
plastic piping installed within a masonry-
chimney flue, metal or factory-built
chimney, shall not be used to supply
combustion air [NPPA 54:9.3.8.7], xmless it is
listed and shown in the manufacturer's
installation instructions.
508.0 Other Water Heater Installation Requirements.
508.1 The Authority Having Jurisdiction shall have the
authority to require the use of an approved dielectric
insulator on the water piping connections of water
heaters and related water heating equipment.
508.2 Protection from Seismic Damage. In seismic
design categories C, D, E, and F water heaters shall
be anchored or strapped to resist horizontal
displacement due to earthquake motion. Strapping
shall be at points within the upper one third (1/3)
and lower one-third (1/3) of its vertical dimensions.
At the lower point, a minimum distance of four (4)
inches (102 mm) shall be maintained above the
controls with the strapping.
508.2.1 [HCD 1, HCD 2, and SFM] Protection
from seismic damage.* * * Water heaters shall be
anchored to resist horizontal displacement due to
earthquake motion. Strapping shall he at points
within the upper one third (1/3) and lozver one-third
(1/3) of its vertical dimensions. At the lower point, a
minimum distance of four (4) inches (102 mm) shall
be maintained above the controls with the strapping.
Note: [HCD 1 & HCD 2] Reference Health and Safety
Code Section 19211(a) which addresses new, replacement,
and existing water heaters.
Note: [SFM] The applicable subsection of Health and
Safety Code section 19211(a) which addresses new,
replacement, and existing ivater heaters is repeated here
for clarity and reads as follows:
Section 19211(a) Notwithstanding Section 19100, all
neio and replacement water heaters, and all existing
residential water heaters shall be braced, anchored, or
strapped to resist falling or horizontal displacement due to
earthquake motion. At a minimum, any luater heater shall
be secured in accordance with the California Plumbing
Code, or modifications made thereto by a city coimty, or
city and county pursuant to Section 17958.5.
508.3 A water heater supported from the ground
shall rest on level concrete or other approved base
extending not less than three (3) inches (76 mm)
above the adjoining ground level.
508.4 When a water heater is located in an attic, attic-
ceiling assembly, floor-ceiling assembly, or floor-
subfloor assembly where damage may result from a
leaking water heater, a watertight pan of corrosion-
resistant materials shall be installed beneath the
water heater with a minimum three-quarter (3/4)
inch (20 mm) diameter drain to an approved location.
508.5 Relief Valve Discharge.
Discharge from a relief valve into a water heater pan
shall be prohibited.
508.6 Added or Converted Equipment. When addi-
tional or replacement equipment is installed or an
appliance is converted to gas from another fuel, the
location in which the equipment is to be operated shall
be checked to verify the following [NFPA 54:9.1.2]:
508.6.1 Air for combustion and ventilation is
provided where required, in accordance with the
provisions of Section 507.0. Where existing
facilities are not adequate, they shall be
upgraded to Section 507.0 specifications [NFPA
54:9.1.2(1)].
508.6.2 The installation components and equip-
ment meet the clearances to combustible material
provisions of NFPA 54:9.2.2. It shall be deter-
mined that the installation and operation of
the additional or replacement equipment does
not render the remaining equipment unsafe for
continued operation. [NFPA 54:9.1.2(2)]
(The following reference was extracted from NFPA 54.)
9.2.2 Clearance to Combustible Materials. Gas
utilization eqidpment and their vent connectors shall be
installed with clearances from combustible material so
their operation will not create a hazard to persons or
property. Minimum clearances between combustible
walls and the hack and sides of various conventional
types of equipment and their vent connectors are
specified in Chapters 9 and 10. (Reference can also be
made to NFPA 211, Standard for Chimneys, Fireplaces,
Vents, and Solid Fuel-Burning Appliances.)
508.6.3 The venting system is constructed and
sized in accordance with the provisions of this
chapter. Where the existing venting system is
not adequate, it shall be upgraded to comply
with tills chapter. [NFPA 54: 9.1.2(3)]
508.7 Types of Gases. It shall be determined
whether the gas-utilization equipment has been
designed for use with the gas to which it will be
connected. No attempt shall be made to convert the
equipment from the gas specified on the rating plate
for use with a different gas without consulting the
installation instructions, the serving gas supplier, or
the equipment manufacturer for complete instruc-
tions. [NFPA 54: 9.1.3]
58
WATER HEATERS
508.8-508.15
508.8 Safety Shutoff Devices for Unlisted LP-Gas
Equipment Used Indoors. Unlisted gas utilization
equipnaent for use with undiluted liquefied
petroleuiTi gases and installed iiidoors shall be
equipped with safety shutoff devices of the complete
shutoff type. [NFPA 54: 9.1.4]
508.9 Use of Air or Oxygen Under Pressure. Wliere
air or oxygeii under pressure is used in coniiection witla
tlie gas supply, effective means sucli as a back-pressure
regulator and relief valve shall be provided to prevent
air or oxygen from passing back into the gas piping.
Wl'^ere oxygen is used, installation shall be in accordance
witli NFPA 51, Standard for the Design, and Installation of
Oxygen-Fuel Gas Systems for Welding, Cutting, and Allied
Processes. [NFPA 54: 9.1.5]
508.10 Protection of Gas Equipment from Fumes
or Gases Other than Products of Combustion.
Non-direct vent-type gas appliaiices installed in
beauty shops, barbershops, or other facilities where
chemicals that generate corrosive or flammable
products such as aerosol sprays are routinely used
shall be located in an equipment room separate or
partitioned off from other areas with provisions for
combustion and dilution air from outdoors. Direct
vent equipment shall be installed in accordance with
the appliance manufacturer's installation instructions.
[NFPA 54: 9.1.6.2]
508.11 Process Air. In addition to air needed for
combustion in commercial or industrial processes,
process air shall be provided as required for cooling
of equipment or material, controlling dew point,
heating, drying, oxidation, dilution, safety exliaust,
odor control, air for compressors, and for comfort
and proper working conditions for personnel.
[NFPA 54: 9.1.7]
508.12 Building Structural Members.
508.12.1 Structural members of a building shall
not pass through gas utilization equipment
having an operating temperature in excess of
500°F (260°C). [NFPA 54:9.1.8.1]
508.12.2 Structural members passing through
gas utilization equipment having an operating
temperature of 500°F (260°C) or less shall be of
noncombustible material. Building columns,
girders, beams, or trusses shall rvot be installed
within equipment, unless insulation and
ventilation are provided to avoid all
deterioration in strengtli ai-\d linear expansion of
the building structure in either a vertical or a
horizontal direction. [NFPA 54:9.1.8.2]
508.12.3 Gas utilization equipment shall be
furnished either witli load-distributing bases or
• " with a sufficient number of supports to prevent
damage to either the building structure or
equipment. [NFPA 54:9.1.8.3] :
508.12.4 At the locations selected for installation
of gas utilization equipment, the d5mamic and
static load-carrying capacities of the building
structure shall be checked to determine whether
they are adequate to carry the additional loads.
Tlie equipment shall be supported and shall be
coraiected to the piping so as not to exert uiidue
stress on the comiections. [NFPA 54:9.1.8.4]
508.13 Flammable Vapors. Gas appliances shall
not be installed in areas where the open use,
handling, or dispensing of flammable liquids
occurs, unless the design, operation, or installation
reduces the potential of ignition of the flammable
vapors. Gas utilization equipment installed in
compliance with Sections 508.14, 508.15, or 508.16
shall be considered to comply with the intent of tliis
provision. [NFPA 54: 9.1.9]
508.14 Installation in Residential Garages.
(1) Gas utilization equipment in residential
garages and ui adjacent spaces that open to
the garage and are not part of the living
space of a dwelling unit shall be installed so
that all burners and burner-ignition devices
are located not less than 18 inches (450 mm)
above the floor unless listed as flammable
vapor ignition resistant. [NFPA 54:9.1.10.1]
(2) Such equipment shall be located or
protected so it is not subject to physical damage
by a moving veliicle. [NFPA 54:9.1.10.2]
(3) Wlien appliances are installed in a separate,
enclosed space having access only from
outside of the garage, such equipment may
be installed at floor level, providing the
required combustion air is taken from the
exterior of the garage. [NFPA 54: 9.1.10.3]
508.15 Installation in Commercial Garages.
508.15.1 Parking Structures. Gas utilization
equipment installed in enclosed, basement, and
underground parking structures shall be
installed in accordance with NFPA 88A, Standard
for Parking Structures. [NFFA5^:9.1.11.1]
508.15.2 Repair Garages. Gas utilization
equipment installed in repair garages shall be
installed in a detached building or room,
separated from repair areas by walls or partitions,
floors, or floor-ceiling assemblies that are
constructed so as to prohibit the transmission of
vapors and having a fire-resistance rating of not
less tlian 1 hour, and that have no openings in tlie
waL. separating flie repair area wifliin 8 feet (2.5 m)
of the floor. Wall penetrations shall be fire-
stopped. Air for combustion purposes shall be
obtained from outside tlie building. Tlie heating
roomsliallnotbeused for the storage of com:^_
bustible materials. [NFPA 54:9.1.11.2]
Exception No. 1: : Overhead heaters where
installed not less than 8 ft (2.5 m) above the
floor shall be permitted.
59
508.15-508.24
2007 CALIFORNIA PLUMBING CODE
Exception No. 2: Heating equipment for
vehicle repair areas where there is no
dispensing or transferring of Class I or Class
II flammable or combustible liquids or
liquefied petroleum gas shall be installed in
accordance with NFPA 30A, Automotive and
Murine Service Station Code.
[NFPA 54: 8.1.11.2]
508.16 Installation In Aircraft Hangars. Heaters
in aircraft hangars shall be installed in accordance
with NFPA 409, Standard on Aircraft Hangars.
[NFPA 54: 9.1.12]
508.17 Gas Equipment Physical Protection.
Where it is necessary to locate gas utilization
eqtiipment close to a passageway traveled by vehicles
or equipment, guardrails or bumper plates shall be
installed to protect the equipment from damage.
[NFPA 54: 9.1.13]
508.18 Venting of Flue Gases. Gas utilization
equipment shall be vented in accordance with the
provisions of this chapter and NFPA 54, Chapter 10.
[NFPA 54: 9.1.14]
508.19 Extra Device or Attachment. No device or
attachment shall be installed on any gas utihzation
equipment that could in any way impair the
combustion of gas. [NFPA 54: 9.1.15]
508.20 Adequate Capacity of Piping. When
additional gas utilization equipment is being
connected to a gas piping system, the existing
piping shall be checked to determine if it has
adequate capacity. (See Section 1209.4.3.) Where
inadequate, the existing system shall be enlarged as
necessary, or separate gas piping of adequate
capacity shall be rvm from the point of delivery to
the equipment. [NFPA 54: 9.1.16]
508.21 Avoiding Strain on Gas Piping. Gas
utilization equipment shall be supported and so
connected to the piping as not to exert imdue strain
on the connections. [NFPA 54: 9.1.17]
508.22 Gas Appliance Pressure Regulators.
Where the gas supply pressure is higher than that at
which the gas utiUzation equipment is designed to
operate or varies beyond the design pressure limits
of the equipment, a gas appliance pressure regulator
shaUbe installed. [NFPA 54: 9.1.18]
508.23 Venting of Gas Appliance Pressure
Regulators. Venting of gas appliance pressure
regulators shall comply with the following
requirements [NFPA 54:9.1.19]:
508.23.1 Gas appliance pressure regulators
requiring access to the atmosphere for successful
operation shall be equipped with vent piping
leading outdoors or, if the regulator vent is an
integral part of the equipment, into the
combustion chamber adjacent to a continuous
pilot, unless constructed or equipped with a vent
limiting means to limit the escape of gas from the
vent opening in the event of diaphragm failure.
[NFPA 54:9.1.19(1)]
508.23.2 Vent limiting means shall be employed
on listed gas appliance presstire regulators only.
[NFPA 54:9.1.19(2)]
508.23.3 In the case of vents leading outdoors,
means shall be employed to prevent water from
entering this piping and also to prevent blockage
of vents by insects and foreign matter.
[NFPA 54:9.1.19(3)]
508.23.4 Under no circumstances shall a
regtilator be vented to the gas utilization equip-
ment flue or exhaust system. [NFPA 54:9.1.19(4)]
508.23.5 In the case of vents entering the
combustion chamber, the vent shall be located so
the escaping gas will be readily ignited by the
pilot and the heat liberated thereby will not
adversely affect the normal operation of the
safety shutoff system. The terminus of the vent
shall be securely held in a fixed position relative to
the pilot. For manufactured gas, the need for a flame
arrester in the vent piping shall be determined.
[NFPA 54:9.1.19(5)]
508.23.6 Vent lines from a gas appliance
pressure regulator and bleed lines from a
diaphragm-type valve shall not be connected to a
common manifold terminating in a combustion
chamber. Vent lines shall not terminate in
positive-pressure-type combustion chambers.
[NFPA 54:9.1.19(6)]
508.24 Bleed Lines for Diaphragm-Type Valves.
Bleed lines shall comply with the following
requirements [NFPA 54:9.1.20]:
508.24.1 Diaphragm-type valves shall be
equipped to convey bleed gas to the outside
atmosphere or into the combustion chamber
adjacent to a continuous pUot. [NFPA 54:9.1.20(1)]
508.24.2 In the case of bleed lines leading
outdoors, means shall be employed to prevent
water from entering tliis piping and also to prevent
blockage of vents by insects and foreign matter.
[NFPA 54:9.1.20(2)]
508.24.3 Bleed lines shall not terminate in the
gas utilization equipment flue or exhaust
system. [NFPA 54:9.1.20(3)]
508.24.4 In the case of bleed lines entering the
combustion chamber, the bleed line shall be
located so the bleed gas will be readily ignited by
the pUot and the heat liberated thereby wiU not
adversely affect the normal operation of the
safety shutoff system. The terminus of the bleed
line shall be securely held in a fixed position
60
WATER HEATERS
508.24-509.3
relative to the pilot. For manufactured gas, the
need for a flame arrester in tl\e bleed line piping
shall be determined. [NFPA 54:9.1.20(4)]
508.24.5 Bleed lines from a diaphragm-type
valve and vent lines from a gas appliance
pressure regulator shall not be comiected to a
conmion manifold terminating m a combustion
chamber. Bleed lines shall not terminate in
positive-pressure-type combustion chambers.
[NFPA 54:9.1.20(5)]
508.25 Combination of Equipment. Any com-
binatioiT of gas utilization equipment, attachments,
or devices used together in any manner shall comply
with the standards that apply to the individual
equipment. [NFPA 54: 9.1.21]
508.26 Installation Instructions. The installing
agency shall conform with the equipment
manufacturer's recommendations in completing an
installation. The installing agency shall leave the
manufacturer's installation, operating, and
maintenance instructions in a location on the
premises where they will be readily available for
reference and guidance for the Authority Having
Jurisdiction, service personnel, and the owner or
operator. [NFPA 54: 9.1.22]
508.27 Protection of Outdoor Equipment. Gas
utilization equipment not listed for outdoor
installation but installed outdoors shall be provided
with protection to the degree that the environment
requires. Equipment listed for outdoor mstallation
shall be permitted to be installed without protection
in accordance with the provisions of its listing. (See
9.2.1.) [NFPA 54: 9.1.23]
(The following references were extracted from NFPA 5i.)
9.2 Accessibility and Clearance.
9.2.1 Accessibility for Service. All gas utilization
equipment shall be located with respect to building
construction and other equipment so as to permit
access to the gas utilization equipment. Sufficient
clearance shall be maintained to permit clean-
ing of heating surfaces; the replacement of filters,
blowers, motors, burners, controls, and vent
connections; the lubrication of moving parts where
necessary; the adjustment and cleaning of burners
and pilots; and the proper functioning of explosion
vents, if provided. For attic installation, the passage-
way and servicing area adjacent to the equipment
shall be floored.
509.0 Equipment on Roofs.
509.1 General.
(1) Gas-utilization equipment on roofs shall be
designed or enclosed so as to withstand
climactic conditions m tlte area in wliich tliey
are installed. Wliere enclosures are provided.
each enclosure shall permit easy entry and
movement, shall be of reasonable height, and
shall have at least a 30-inches (760mm)
clearance between the entire service access
panel(s) of the equipment and the wall of
the enclosure. [NFPA 54:9.4.1.1]
(2) Roofs on which equipment is to be installed
shall be capable of supporting tlae additional
load or shall be reinforced to support the
additional load. [NTPA 54:9.4.1.2]
(3) All access locks, screws, and bolts shall be of
corrosion-resistant material. [NFPA 54:9.4.1.3]
509.2 Installation of Equipment on Roofs.
(1) Gas utilization equipment shall be u-rstalled in
accordance with its listing and the
manufacturer's installation instructions.
[NFPA 54:9.4.2.1]
(2) Equipment shall be installed on a well-
drained surf ace of the roof. At least 6 feet
(1.8m) of clearance shall be available
between any part of the equipment and the
edge of a roof or similar hazard, or rigidly
fixed rails, guards, parapets, or other
building structures at least 42 inclies (1.1 m)
in height shall be provided on the exposed
side. [NFPA 54:9.4.2.2]
(3) AH equipment requiring an external source of
electrical power for its operation shall be
provided with (1) a readily accessible
electrical disconnecting means within sight
of the equipment that will completely
de-energize Ihe equipment, and (2) a 120-V
ac grounding-type receptacle outlet on the
roof adjacent to the equipment. The
receptacle outlet shall be on tlie supply side
of the disconnect switch. [NFPA 54:9.4.2.3]
(4) Where water stands on the roof at the
equipment or in the passageways to the
equipment, or where the roof is of a design
having a water seal, a suitable platform,
walkway, or botli shall be provided above the
waterline. Such platforms or walkways shall
be located adjacent to the equipment and
control panels so that the equipment can
be safely serviced where water stands on the
roof. [NFPA 54: 9.4.2.4]
509.3 Access to Equipment on Roofs.
509.3.1 Gas utilization equipment located on
roofs or other elevated locaiioi\s shall be accessible.
[NFPA 54:9.4.3.1]
509.3.2 Buildmgs more than 15 feet (4.6 m) in
height shall have an inside means of access to the "
roof, unless other means acceptable to Hie Aufliority
Having Jurisdiction are used. [NFPA 54:9.4.3.2]
509.3.3 The inside means of access shall be a
61
509.3-510.2
2007 CALIFORNIA PLUMBING CODE
permanent, or fold-away inside stairway or
ladder, terminating in an enclosure, scuttle, or
trap door. Such scuttles or trap doors shall be at
least 22 inches x 24 inches (560 mm x 610 mm) in
size, shall open easily and safely under all
conditions, especially snow; and shall be
constructed so as to permit access from the roof
side unless deliberately locked on the inside.
At least 6 feet (1.8 m) of clearance shall be avail-
able between the access opening and the edge of
the roof or similar hazard, or rigidly fixed rails
or guards a minimum of 42 inches (1.1 m) in height
shall be provided on the exposed side. Where
parapets or other building structures are utilized in
lieu of guards or rails, they shall be a minimum
of 42 inches (1.1 m) in height. [NPPA 54:9.4.3.3]
509.3.4 Permanent lighting shall be provided at
the roof access. The switch for such lighting
shall be located inside the building near the
access means leading to the roof. [NFPA 54: 9.4.3.4]
509.4 Appliances in Attics.
509.4.1 Attic Access. An attic in which an
appliance is installed shall be accessible through
an opening and passageway at least as large as
the largest component of the appliance, and not
less than 22 inches x 30 inches (560 mm x 760 mm).
[NFPA 54:9.5.1]
509.4.2 Where the height of the passageway is
less than 6 feet (1.8 m), the distance from the
passageway access to the appliance shall not
exceed 20 feet (6.1 m) measured along the
centerline of the passageway. [NFPA 54:9.5.1.1]
509.4.3 The passageway shall be tmobstructed
and shall have solid flooring not less than 24
inches (610 mm) wide from the entrance opening
to the appliance. [NFPA 54:9.5.1.2]
509.4.4 Worit Piatform. A level working
platform not less than 30 inches (760 mm) by 30
inches (760 mm) shall be provided in front of the
service side of the appliance. [NFPA 54:9.5.2]
509.4.5 Ligliting and Convenience Outlet. A
permanent 120-volt receptacle outlet and a
lighting fixture shall be installed near the
appliance. The switch controlling the lighting
fixture shall be located at the entrance to the
passageway. [NFPA 54:9.5.3]
510.0 Venting of Equipment.
510.1 General. This section recognizes that the
choice of venting materials and the methods of
installation of venting systems are dependent on the
operating characteristics of the gas utilization
equipment. The operating characteristics of vented
gas utilization equipment can be categorized with
respect to (1) positive or negative pressure within the
venting system, and (2) whether or not the
equipment generates flue or vent gases that can
condense in the venting system. See NFPA 54 Section
3.3 for the definition of these vented appliance
categories. [NFPA 54:12.2]
510.2 Specification for Venting.
510.2.1 Connection to Venting Systems.
Except as permitted in Sections 510.2.2 through
510.2.6, all gas utilization equipment shall be
connected to venting systems. [NFPA 54:12.3.1]
510.2.2 Equipment Not Required to Be
Vented. The following equipment shall not be
reqxiired to be vented [NFPA 54:12.3.2]:
51 0.2.2.1 Listed Ranges. [NFPA 54:12.3.2(1)]
510.2.2.2 Bxiilt-in Domestic Cooking Units
Listed and Marked for Optional Venting.
[NFPA 54:12.3.2(2)]
510.2.2.3 Listed Hot Plates and Listed
Latmdry Stoves. [NFPA 54:12.3.2(3)]
510.2.2.4 Listed Type 1 clothes dryers shall
be exhausted to the outside air.
[NFPA 54:12.3.2(4)]
510.2.2.5 A single listed booster-type
(automatic instantaneous) water heater,
when designed and used solely for the
sanitizing rinse requirements of a dish-
washing machine, provided that the equip-
ment is installed with the draft hood in place
and imaltered if a draft hood is required, in
a commercial kitchen having a mechanical
exhaust system; where installed in this
manner, the draft hood outlet shall not be
less than 36 inches (910 mm) vertically and 6
inches (150 mm) horizontally from any surface
other than the equipment. [NFPA 54:12.3.2(5)]
510.2.2.6 Listed Refrigerators.
[NFPA 54:12.3.2(6)]
51 0.2.2.7 Counter Appliances.
[NFPA 54:12.3.2(7)]
510.2.2.8 Direct Gas-Fired Makeup Air
Heaters. [NFPA 54:12.3.2(9)]
510.2.2.9 Other Equipment Listed for
Unvented Use and Not Provided with Flue
Collars. [NFPA 54:12.3.2(10)]
510.2.2.10 Specialized Equipment of
Limited Input such as Laboratory Btirners or
Gas Lights. [NFPA 54:12.3.2(11)] Where any
or all of this equipment in Sections 510.2.2.1
through 510.2.2.10 is installed so the
aggregate input rating exceeds 20 Btu/h/ft^
62
WATER HEATERS
510.2-510.3
^'
(207 W/m') of room or space in which it is
installed, one or more shall be provided with
ventiiig systems or otlaer approved means for
removing the vent gases to the outside
atmosphere so the aggregate input rating of
tlie remaining unvented equipment does not
exceed 20 Btu/h/ff (207 W/m'). Wliere tlie
calculation includes the volume of an adjacent
room or space, tlie room or space in wliicli tlie
equipment is installed shall be directly
connected to tlie adjacent room or space by a
doorway, archway, or other opening of
comparable size that cannot be closed.
510.2.3 Ventilating iHoods. Ventilating hoods
and exhaust systems shall be permitted to be
used to vent gas utilization equipment installed in
commercial applications (see Section 510.3.5)
and to vent industrial equipment, particularly
where tlie process itself requires fume disposal.
[NFPA 54:12.3.3]
510.2.4 Well- Ventilated Spaces. The operation of
industrial gas utilization equipment sucli tliat its
flue gases are discliarged directly into a large and
well-ventilated space shall be permitted. [NFPA
54:12.3.4]
510.2.5 Direct-Vent Equipment. Listed direct-
vent gas utilization equipment shall be
considered properly vented where installed in
accordance with the terms of its listing, the
manufacturer's instructions, and Section 510.8(3)
of this code. [NFPA 54:12.3.5]
510.2.6 Equipment with Integral Vents. Gas
utilization equipment incorporating integral
venting means shall be considered properly
vented where installed in accordance with its
listing, the manufacturer's instructions, and
Sections 510.8.1 atid 510.8.2 of tliis code. [NFPA
54:12.3.6]
510.3 Design and Construction.
510.3.1 l\/lmimum Safe Performance. A venting
system shall be designed and constructed so as to
develop a positive flow adequate to remove flue or
vent gases to the outside atmosphere.
510.3.2 Equipment Draft Requirements. A
venting system shall satisfy the draft require-
ments of the equipment in accordance with the
manufacturer's instructions. [NFPA 54:12.4.1]
510.3.3 Design and Construction. Gas
utilization equipment required to be vented shall
be connected to a venting system desigiied and
installed in accordance with the provisions of
Sections 510.4 tlirough 510.15 of tliis code.
[NFPA 54:12.4.2]
510.3.4 Mechanical Draft Systems.
51 0.3.4.1 Mechanical draft systems shall be
listed and shall be installed in accordance
with the terms of their listing and both the
appliance and the mechanical draft system
manufacturers' instructions. [NPPA 54:12.4.3.1]
510.3.4.2 Gas utilization equipment
requiring venting shall be permitted to be
vented by means of mechanical draft
systems of either forced or induced draft
design. [NFPA 54:12.4.3.2]
Exception: hicinerators.
510.3.4.3 Forced draft systems and all
portions of induced draft systems under
positive pressure during operation shall be
designed and installed so as to prevent
leakage of flue or vent gases into a building.
[NPPA 54:12.4.3.3]
51 0.3.4.4 Vent connectors serving equipment
vented by natural draft shall not be connected
into any portion of mechanical draft systems
operating under positive pressure.
[NFPA 54:12.4.3.4]
51 0.3.4.5 Wliere a mechanical draft system
is employed, provision shall be made to
prevent the flow of gas to the main burners
when tlie draft system is not performing so as
to satisfy the operating requirements of tlie
equipment for safe performance.
[NFPA 54:12.4.3.4]
51 0.3.4.6 Tlie exit terminals of mechanical
draft systems shall be not less than 7 feet (2.1 m)
above grade where located adjacent to public
walkways and shall be located as specified in
Sections 510.8.1 and 510.8.2 of this code.
[NFPA 54:12.4.3.6]
510.3.5 Ventilating l-loods and Exhaust
Systems.
510.3.5.1 Ventilating hoods and exhaust
systems shall be permitted to be used to vent
gas utilization equipment installed in
commercial applications. [NEFPA 54:12.4.4.1]
510.3.5.2 Wliere automatically operated gas
utilization equipment is vented through a
ventilating hood or exliaust system equipped
with a damper or with a power means of
exliaust, provisions shall be made to allow
the flow of gas to the main burners only
when the damper is open to a position to
properly vent the equipment and_ when the_
power means of exliaust is in operation.
[NFPA 54:12.4.4.2]
510.3.6 Circulating Air Ducts and Furnace
Plenums. No portion of a venting system shall
63
510.3-510.5
2007 CALIFORNIA PLUMBING CODE
extend into or pass through any circulating air
duct or furnace plenum. [NFPA 54:12.4.5.1]
510.4 Type of Venting System to Be Used.
51 0.4.1 The type of venting system to be used shall
be in accordance with Table 5-2. [NFPA 54:12.5.1]
510.4.2 Plastic Piping. Plastic piping used for
venting equipment listed for use with such
venting materials shall be approved. [NBPA 54:1252]
510.4.3 Special Gas Vent, Special gas vent shall
be listed and installed in accordance with the
terms of the special gas vent listing and the
manufacturer's instructions. [NFPA 54:12.5.3]
510.5 IVIasonry, Metal, and Factory-Built
Chimneys.
510.5.1 Listing or Construction.
510.5.1.1 Factory-built chimneys shall be
installed in accordance with their listing and
the manufacturers' instructions. Factory-built
chimneys used to vent appliances that
operate at positive vent pressure shall be
Usted for such application. [NFPA 54:12.6.1.1]
51 0.5.1 .2 Metal chimneys shall be buUt and
installed in accordance with NFPA 211,
Standard for Chimneys, Fireplaces, Vents, and
Solid Fuel-Burning Appliances. [NFPA 54:12.6.1.2]
510.5.1.3 Masonry chimneys shall be built
and installed in accordance with NFPA 211,
Standard for Chimneys, Fireplaces, Vents, and
Solid Fuel-Burning Appliances, and lined with
approved clay flue lining, a listed chimney
lining system, or other approved material
that will resist corrosion, erosion, softening,
or cracking from vent gases at temperatures
up to 1800°F (982°C). [NFPA 54:12.6.1.3]
Exception: Masoiury chimney flues lined
with a clumney Bning system specifically
listed for use with listed gas appliances
with draft hoods. Category I appliances,
and other gas appUances listed for use
with Type B vents shall be permitted.
The liner shall be installed in accordance
with the liner manufacturer's instructions
and the terms of the listing. A permanent
identifying label shall be attached at the
point where the connection is to be
made to the liner. The label shall read:
"This dhimney Bner is for appliances that
btim gas only. Do not connect to solid-or
liquid-fuel-burning appliances or
incinerators." [NFPA 54:12.6.1.3]
510.5.2 Termination.
510.5.2.1 A chimney for residential-type or
low-heat gas utilization equipment shall
extend at least 3 feet (0.9 m) above the
highest point where it passes through a roof
of a building and at least 2 feet (0.6 m)
higher than any portion of a building within
a horizontal distance of 10 feet (3.0 m). [See
Figure 5-1.] [NFPA 54:12.6.2.1]
510.5.2.2 A chimney for medium-heat
equipment shall extend at least 10 feet (3.0 m)
higher than any portion of any building
within 25 feet (7.6 m). [NFPA 54:12.6.2.2]
51 0.5.2.3 A chimney shall extend at least 5 feet
(1.5 m) above the highest connected equip-
ment draft hood outlet or flue collar.
[NFPA 54:12.6.2.3]
510.5.2.4 Decorative shrouds shall not be
installed at the termination of factory-built
chimneys except where such shrouds are
listed and labeled for use with the specific
factory-built chimney system and are
installed in accordance with manufacturers'
installation instructions. [NFPA 54:12.6.2.4]
510.5.3 Size of Chimneys. The effective area of
a chimney venting system serving listed gas
appliances with draft hoods. Category 1
appliances, and other appliances listed for use
with Type B vents shall be in accordance with
one of the following methods [NFPA 54:12.6.3.1(1)]:
(1) This chapter and NFPA 54: Chapter 13.
[NFPA 54:12.6.3.1(1)]
(2) For sizing an individual chimney venting
system for a single appliance with a draft
hood, the effective areas of the vent
connector and chimney flue shall be not less
than the area of the appliance flue collar or
draft hood outlet or greater than seven times
the draft hood outlet area. [NFPA 54:12.6.3.1(2)]
(3) For sizing a chimney venting system connected
to two appliances with draft hoods, the
effective area of the chimney flue shall be
not less than the area of the larger draft hood
outlet plus 50 percent of the area of the
smaller draft hood outlet, or greater than
seven times the smallest draft hood outlet area.
[NFPA 54:12.6.3.1(3)]
(4) Other approved engineering methods.
[NFPA 54:12.6.3.1(5)]
(5) Chimney venting systems using mechanical
draft shall be sized in accordance with approved
engineering methods. [NFPA 54:12.6.3.1(4)]
Where an incinerator is vented by a chimney
serving other gas utilization eqtiipment, the
gas input to the incinerator shall not be
included in calculating chimney size, provided
the chimney flue diameter is not less than 1
64
WATER HEATERS
Figure 5-1 -510.5
2 ft (0.6 m)
mfnimum -
r-10ttf3.0m)-v
/ or less \
3.
\
Mr-
Chimney J^r'
\
2 ft (0.6 m) rnlnimum
"T"
mf^;;mmmMM
■•■s
Wall or
parapet
3 ft (0.9 m)
minimum
' Chimney
10 ft (3.0 m)
orle
3 ft (0.9 m)
minimum
Chimney
(a) Termination 10 ft (3.0 m) or Less from Ridge, Wall, or Parapet
Wall or
parapet
l\^ore than
-10 ft (3.0 m)-
-^
' ^J^ff'^fM!^ ■■&^M;:;^M
-Jfl.
Note; No height
above parapet
required when
distance from walls
or parapet Is more
than 10 ft (3.0 m).
3 ft (0.9 m)
minimum
Chimney
Height above any
roof surface within
10 ft (3.0 m) horizontally
Ridge
■MML
Chimney
- (b) Termination Uok Than 10 ft (3.0 m) from Ridge, Wall, or Parapet
FIGURE 5-1 Typical Termination Locations for
Cliimneys and Single-Wall Metal Pipes Serving
Residential-Type and Low-Heat Equipment
[NFPA54:Figure 12.6.2.1]
inch (25 mm) larger in equivalent diameter
tlian the diameter of the incinerator flue
outlet. [NFPA 54:12.6.3.2]
510.5.4 Inspection of Chimneys.
(A) Before replacing aiT existing appliance or
connecting a vent comiector to a chimney,
the cliimney passageway shall be examined
to ascertain that it is clear and free of
obstructions and shall be cleaned if
previously used for venting solid- or liquid-
fuel-burrdng appliances or fireplaces.
[NFPA 54:12.6.4.1]
(B) Cliimneys shall be lined m accordance with
NFPA 211, Standard for Chimneys, Fireplaces,
Vents, and Solid-Fuel Burning Appliances.
[NFPA 54:12.6.4.2]
(C) Cleanouts shall be examiiied to determine
that they will remain tightly closed when
not in use. [NFPA 54:12.6.4.3]
(D) When inspection reveals that an existing
chimney is not safe for the intended
application, it shall be repaired, rebuilt,
lined, relined, or replaced with a vent or
cliimney to conform to NFPA 211, Standard
for Chimneys, Fireplaces, Vents, and Solid-
Fuel-Burning Appliances, and shall be
suitable for the equipment to be attaclied.
[NFPA 54:12.6.4.4]
510.5.5 Chimney Serving Equipment Burning
Other Fuels.
510.5.5.1 Gas utilization equipment shall
not be coimected to a chimney flue serving a
separate appliance designed to burn solid
fuel [NFPA 54:12.6.5.1]
510.5.5.2 Where one chimney serves gas
utilization equipment and equipment
burning liquid fuel, tlie equipment shall be
connected through separate openings or
shall be connected tlirough a single opening
where joined by a suitable fittiiig located as
close as practical to the chimney. Wliere two
or more openings are provided into one
chimney flue, they shall be at different
levels. Wliere the gas utilization equipment
is automatically controlled, it shall be
equipped with a safety shutoff device.
[NFPA 54:12.6.5.2]
510.5.5.3 A listed combination gas- and
solid-fuel-burning appliance connected to a
single cliimney flue shall be equipped with a
manual reset device to shut off gas to the
main burner in the eveiit of sustained
backdraft or flue gas spillage. Tlie cliimney
flue shall be sized to properly vent the
appliance. [NFPA 54: 12.6.5.3]
65
Figure 5-2 -510.5
2007 CALIFORNIA PLUMBING CODE
Listed-i21iq^* discharge opening^
cap t, J — L.
Listed gas
vent
Roof pitch is ^12
W (minimum) -
IVIinimum height from roof
to lowest discharge opening
Roof pitch heights
Roof pitch H(
minimum) ft
m
Flat to 6/12
1.0
0.30
Over 6/12 to 7/12
1.25
0.38
Over 7/12 to 8/12
1.5
0.46
Over 8/12 to 9/12
2.0
0.61
Over 9/12 to 10/12
2.5
0.76
Over 10/12 to 11/12
3.25
0.99
Over 11/12 to 12/12
4.0
1.22
Over 12/12 to 14/12
5.0
1.52
Over 14/12 to 16/12
6.0
1.83
Over 16/12 to 18/12
7.0
2.13
Over 18/12 to 20/12
7.5
2.27
Over 20/12 to 21/12
8.0
2.44
FIGURE 5-2 Gas Vent Termination Locations for
Listed Caps 12 in. (300 mm) or Less in Size at
Least 8 ft. (2.4 m) from a Verticai Waii [NFPA 54:
Figure 12.7.2 and Tabie 12.7.2]
IW
Gas furnace
"fVpe B gas vents
Air grilles in
outside walls
Louvered door could
be used in lieu of
outside wall grilles
JV-
FIGURE 5-3 Plan View of Practical Separation
iViethod for Multistory Gas Venting. [NFPA 54:
Figure 12.7.4.2]
TABLE 5-2
Type of Venting System to Be Used
Gas Utilization Equipment
T)fpe of Venting System
Listed Category I eqmpment
Listed equipment equipped
with draft hood
Equipment listed for use witJi
Type B gas vent
system for gas venting
Type B gas vent (510.6)
Chimney (510.5)
Single-wan metal pipe
(510.7)
Listed dumney lining
(510.5.1.3)
Special gas vent listed
for tiiis equipment
(510.4.3)
Listed vented wall furnaces
Type B-W gas vent
(510.6, 510.6.2.2)
Category 11 equipment
Category III equipment
Category IV equipment
As specified or
furnished
By manufacturers of
Hsted
equipment (510.4.2,
510.4.3)
Incinerators, outdoors
Single-wall metal pipe
(510.7, 510.7.3)
Incinerators, indoors
Eqmpment iiiat can be converted
to use of solid fuel
Unlisted combination gas- and
oil-burning equipment
Combination gas- and sohd-fuel-
buming equipment
Equipment listed for use with
chirrmeys only
Unlisted equipment
Chimney (510.5)
Listed combination gas- and
oil-burning eqttipment
TypeL vent (510.6) or
chimney (510.5)
Decorative appliance in
fireplace
vented
Chimney [UMC 907.2(3)]
Gas-fired toilets
Single-waU metal pipe
(510.7, NFPA 54: 9.25.3)
Direct-vent eqmpment
See 510.2.5
Equipment with integral vent
See 510.2.6
[NFPA 54: Table 12.5.1]
510.5.5.4 A single chimney flue serving a
listed combination gas- and oil-burning
appliance shall be sized to properly vent the
appHance. [NFPA 54: 12.6.5.4]
510.5.6 Support of Chimneys. All portions of
chimneys shall be supported for the design and
weight of the materials employed. Listed
factory-built chimneys shall be supported and
spaced in accordance with their listings and the
manufacturers' instructions. [NFPA 54: 12.6.6]
66
WATER HEATERS
510.5-510.6
510.5.7 Cleanouts. Where a chimney that
formerly carried flue products from liquid- or
solid-fuel-burning appliances is used with an
appliaiice using fuel gas, an accessible cleanout
shall be provided. The cleanout shall have a
tight-fitting cover and be installed so its upper
edge is at least 6 inches (150 mm) below the
lower edge of the lowest chimney inlet opening.
[NFPA 54: 12.6.7]
510.5.8 Space Surrounding Lining or Vent.
510.5.8.1 Tlie remaining space surrounding a
cliimney liner, gas vent, special gas vent, or
plastic piping installed within a masonry
chimiiey flue shall not be used to vent anotlier
appliance. [NFPA 54: 12.6.8.1]
Exception: Tlie insertion of anotlaer liiier
or vent wifliin tlie cliiinney as provided
in this code and the liner or vent
manufactm-er's instructioiis.
51 0.5.8.2 The remaining space surrounding
a cliimney liner, gas vent, special gas vent,
or plastic piping installed witliin a masonry
chimney flue shall not be used to supply
combustion air. [NFPA 54: 12.6.8.2]
Exception: Direct-vent gas-fired
appliances designed for installation in a-
solid-fuel-burning fireplace where
installed in accordance with the listing
and the manufacturer's instruction.
51 0.6 Gas Vents.
51 0.8.1 A gas vent passing tlirough a roof shall
extend tlirough tlie entire roof flashing, roof jack,
or roof thimble and be terminated witli a listed
termination cap. [NFPA 54-2002: 10.6.1(3)]
510.6.1.1 Type B or Type L vents shall
extend in a generally vertical direction witli
offsets not exceeding 45 degrees, except tliat
a vent system having not more than one
60-degree offset shall be permitted. Any
angle greater than 45 degrees from the
vertical is considered horizontal. The total
horizontal distance of a vent plus the
horizontal vent connector serving draft-
hood-equipped appliances shall not be
greater than 75 percent of the vertical height
of the vent. [NFPA 54-2002: 10.6.1(4)]
Exception: Systems designed and sized
as provided in this chapter or in accor-
dance with other approved engineering
metliods.
510.6.1.2 Vents serving Category I fan-
assisted appliances shall be installed in
accordance witli die appliance manufacturer's
instructions and NFPA 54, Chapter 10 or
other approved engineering methods.
[NFPA 54: 12.7.1(3)]
51 0.6.2 A gas vent shall terminate in accordance
with one of the following [NFPA 54: 12.7.2(1)]:
(1) Above the roof surface with a listed cap
or listed roof assembly. Gas vents 12 inches
(300 mm) in size or smaller with listed
caps shall be permitted to be terminated in
accordance with Figure 5-2, provided they
are at least 8 feet (2.4 m) from a vertical wall
or similar obstruction. All other gas vents
shall terminate not less than 2 feet (0.6 m)
above the highest point where they pass
through the roof and at least 2 feet (0.6 m)
liigher fliaii any portion of a buUding witliin
10 feet (3.1 m).
(2) Industrial gas utilization equipment as
provided in Section 510.2.4. [NFPA 54: 12.7.2(l)(c)]
(3) Direct-vent systems as provided in Section
510.2.5. [NFPA 54: 12.7.2(l)(d)]
(4) Equipment with integral vents as provided
in Section 510.2.6. [NFPA 54: 12.7.2(l)(e)]
(5) Mechanical draft systems as provided in
Section 510.3.4. [NFPA 54: 12.7.2(l)(f)]
(6) Ventilating hoods and exhaust systems
as provided in Section 510.3.5. [NFPA 54:
12.7.2(l)(g)]
510.6.2.1 A Type B or a Type L gas vent
shall terminate at least 5 feet (1.5 m) in
vertical height above the highest connected
equipment draft hood or flue collar. [NFPA
54: 12.7.2(2)]
51 0.6.2.2 A Type B-W gas vent shall terminate
at least 12 feet (3.7 m) in vertical height
above die bottom of die wall furnace. [NFPA
54: 12.7.2(3)]
510.6.2.3 A gas vent extending tlirough an
exterior wall shall not terminate adjacent to
die wall or below eaves or parapets, except
as provided in Sections 510.2.5 and 510.3.4.
[NFPA 54: 12.7.2(4)]
510.6.2.4 Decorative shrouds shall not be
installed at the termination of gas vents
except where such shrouds are listed for use
widi the specific gas venting system and are
installed in accordance widi manufacturers'
installation instructions. [NFPA 54: 12.7.2(5)]
51 0.6.2.5 All gas vents shall extend through
die roof flasliing, roof jack, or roof diimble
and terminate with a listed cap or listed roof
assembly. [NFPA 54:12.7.2(6)]
51 0.6.2.6 A gas vent shall terminate at least
3 feet (0.9m) above a forced air inlet located
widxin 10 feet (3.0m). [NFPA 54:12.7.2(7)]
510.6.3 Size of Gas Vents. Venting systems
67
51 0.6 -Table 5-3
2007 CALIFORNIA PLUMBING CODE
shall be sized and constructed in accordance
with NFPA 54, Chapter 3 or other approved
engineering methods and the gas vent and gas
equipment manufacturers' instructions. [NFPA
54: 12.7.3]
510.6.3.1 Category I Appliances. The
sizing of natural draft venting systems
serving one or more listed appliances
equipped with a draft hood or appliances
hsted for use with Type B gas vent, installed
in a single story of a building, shall be in
accordance with one of the following
methods. [NFPA 54: 12.7.3.1]
(1) The provisions of this chapter. [NFPA
54: 12.7.3.1(1)]
(2) Vents serving fan-assisted combustion
system appliances, or combinations of
fan-assisted combustion systems and
draft hood-equipped appliances, shall
be sized in accordance with this chapter
or other approved engineering methods.
[NFPA 54: 12.7.3.1(2)]
(3) For sizing an individual gas vent for a
single, draft-hood-equipped appliance,
the effective area of the vent connector
and the gas vent shall be not less than
the area of the appliance draft hood
outlet or greater than seven times the
draft hood outlet area. [NEPA 54: 12.7.3.1(3)]
(4) For sizing a gas vent connected to two
appliances with draft hoods, the effective
area of the vent shall be not less than the
area of the larger draft hood outlet plus
50 percent of the area of the smaller djraft
hood outlet or greater than seven times
the smaller draft hood outlet area.
[NFPA 54: 12.7.3.1(4)]
(5) Approved engineering practices. [NFPA
54: 12.7.3.1(5)]
510.6.3.2 Category II, Category III, and
Category IV Appliances. The sizing of gas
vents for Category II, Category III, and
Category TV gas utilization equipment shall
be in accordance with the equipment
TABLE 5-3
Clearance for Connectors [NFPA 54: Table 12.8.4.4]
Minimum Distance from Combustible IVIaterial
Equipment
Listed Type B
Gas Vent Material
Listed Type L
Vent Material
Single-Wail
Metal Pipe
Factory-Built
Ciiimney Sections
Listed equipment with
draft hoods and equip-
ment listed for use with
Type B gas vents
As listed
As listed
6 in.
As listed
Residential boilers and
furnaces with listed gas
conversion burner and
with draft hood
6 in.
6 in.
As listed
Residential appliances
Usted for use with Type L
vents
Not permitted
As listed
9 in.
As listed
Residential incinerators
Not permitted
9 in.
18 in.
As Usted
Listed gas-fired toilets
Not permitted
As Hsted
As listed
As listed
Unlisted residential
appliances with draft
hood
Not permittted
6in.
9 in.
As listed
Residential and low-heat
equipment other than
those above
Not permitted
9 in.
18 in.
As listed
Medium-heat equipment
Not permitted
Not permitted
36 in.
As listed
For SI vinits, 1 in.= 25.4 mm.
Note: These clearances shall apply vmless the listing of an appliance or connector specifies clearances, in which case the listed clearances
shall apply.
68
WATER HEATERS
51 0.6 -510 J
manufacturers' instructions. [NFPA
54:12.7.3.3]
510.6.3.3 Sizing. CMmney venting systems
using mechanical draft shall be sized in
accordance with approved engineering
methods. [NFPA 54:12.7.3.4]
510.6.4 Gas Vents Serving Equipment on
lUiore Than One Floor.
510.6.4.1 A common gas vent shall be
permitted in multistory installations to vent
Category I gas utilization equipment located
on more than one floor level, provided the
venting system is designed and iiTstalled in
accordance with approved engineering
methods.
For the purpose of tliis section, crawl spaces,
basements, and attics shall be considered as
floor levels. [NFPA 54: 12.7.4.1]
510.6.4.2 All gas utilization equipment
connected to the common vent shall be
located in rooms separated from a habitable
space. Each of these rooms shall have
provisions for an adequate supply of
combustion, ventilation, and dilution air
that is not supplied from a habitable space.
(See Figure 5-3.) [NFPA 54: 12.7.4.2]
The size of the connectors and
common segments of multistory venting
systems for gas utilization equipment Hsted
for use with Type B double-wall gas vent
shall be in accordance with Table 5-14,
provided [NFPA 54: 12.7.4.3]:
(1) Tlie available total height (H) for each
segment of a multistory venting system is
the vertical distance between the level of
the highest draft hood outlet or flue collar
on that floor and the centerline of the next
highest interconnection tee. (See Figure
G.l(K).) [NFPA 54: 12.7.4.2(1)]
(2) The size of the coimector for a segment is
determined from its gas utilization equipment
heat input and available connector rise, and
shall not be smaller tlian the draft hood outlet
or flue collar size. [NFPA 54: 12.7.4.2(2)]
(3) The size of the common vertical vent
segment, and of the iiiterconnection tee at
the base of that segment, shall be based on
the total gas utilization equipment heat
input entering that segment and its available
total height. [NFPA 54: 12.7.4.2(3)]
510.6.5 Support of Gas Vents. Gas vents shall
be supported and spaced in accordance with
tlieir listings and the manufacturers' instructions.
[NFPA 54: 12.7.5]
510.6.6 Marking. In those localities where solid
and liquid fuels are used extensively, gas vents
shall be permanently identified by a label
attached to the wall or ceiling at a point where
the vent connector enters the gas vent. Tlie label
shall read: "This gas vent is for appliances that
burn gas. Do not connect to solid- or liquid-fuel-
burning appliances or incinerators." The
Authority Having Jurisdiction shall determine
whether its area constitutes such a locality.
[NFPA 54:12.7.6]
510.7 Single-Wall Metal Pipe.
510.7.1 Construction. Single-wall metal pipe
shall be constructed of galvaiuzed sheet steel not
less than 0.0304 inch (0.7 mm) thick or of other
approved, noncombustible, corrosion-resistant
material. [NFPA 54: 12.8.1]
510.7.2 Cold Climate. Uninsulated single-wall
metal pipe shall not be used outdoors in cold
clinaates for venting gas utilization equipment
in regions where the 99 percent winter design
temperature is below 32° Fahrenlieit.
[NFPA 54:12.8.2]
510.7.3 Termination. The termination of single-
wall metal pipe shall comply with the following
requirements [NFPA 54: 12.8.3]:
510.7.3.1 Single-wall metal pipe shall
terminate at least 5 feet (1.5 m) in vertical
height above the highest coimected equip-
ment draft hood outlet or flue collar.
[NFPA 54: 12.8.3(1)]
510.7.3.2 Single-wall metal pipe shall
extend at least 2 feet (0.6 m)' above the highest
point where it passes through the roof of a
building and at least 2 feet (0.6 m) higher than
any portion of a building within a horizontal
distance of 10 feet (3.1 m). [See Figure 5-1.]
[NFPA 54: 12.8.3(2)]
51 0.7.3.3 An approved cap or roof assembly
shall be attaclied to flie terminus of a single-
wall metal pipe. [Also see Section 510.7.4.2.]
[NFPA 54: 12.8.3(3)]
510.7.4 Installation with Equipment Permitted
by 510.4.1.
510.7.4.1 Single-wall metal pipe shall be
used only for runs directly from the space
in which the gas utilization equipment is
located through the roof or exterior wall to
the outer air. A pipe passing through a
roof shall extend without interruption
through the roof flashing, roof jacket, or
roof thimble. [NFPA 54: 12.8.4.1]
510.7.4.2 Single-wall metal pipe shall not-
originate in any unoccupied attic or
concealed space and shall not pass tlirough
any attic, inside wall, concealed space, or
floor. For the installation of a single-wall
69
Table 5-4
2007 CALIFORNIA PLUMBING CODE
Table 5-4
Reduction of Clearances with Specified Forms of Protection [NFPA 54:Table 10.2.3(b)]
Where the required clearance with no protection from appliance, vent connector, or
single-wali metal pipe is:
36 in.
18 in.
12 in.
9 in.
6 in.
Ailowabie Clearances with Specified Protection (in.)
Type of protection applied
to and covering ail surfaces
of combustible material
within the distance specified
as the required clearance
with no protection [See
Figures 5-4
through 5-6.]
Use Col. 1 for clearances above appliance or horizontal connector. Use Col. 2 for
clearances from appliances, vertical connector, and single-wail metal pipe.
Sides
Sides
Sides
Sides
Sides
and
and
and
and
and
Above
Rear
Above Rear
Above
Rear
Above Rear
Above
Rear
Coi.1
Coi.2
Col. 1 Col. 2
Col.1
Coi.2
Coi.1 Coi.2
Col.1
Col. 2
(1)3-1/2 in. thick masonry ~ 24 ~ 12
wall without ventilated air
space
(2) 1/2 in. insulation board 24 18 12 9
over 1 in. glass fiber or
mineral wool batts
(3) 0.024 sheet metal over 18 12 9 6
1 in. glass fiber or mineral
wool batts reinforced with
wire on rear face with
ventilated air space
(4) 3-1/2 in. thick masonry - 12 - 6
wall with ventilated air
space
(5) 0.024 sheet metal with
ventilated air space
(6) 1/2 in. thick insulation
board with ventilated air
space
(7) 0.024 sheet metal with 18 12 9 6
ventilated air space over
0.024 sheet metal with
ventilated air space
(8) 1 in. glass fiber or 18 12 9 6
mineral wool batts
sandwiched between two
sheets 0.024 sheet metal
with ventilated air space
18
12
9
6
6
4
5
3
3
2
18
12
9
6
6
4
5
3
3
3
5 3
5 3
For SI units, 1 in. = 25.4 mm.
Notes:
1. Reduction of clearances from combustible materials shall not interfere with combustion air, draft hood clearance and relief, and
accessibility of servicing.
2. All clearances shall be measured from the outer surface of the combustible material to the nearest point on the surface of the appUance,
disregarding any intervening protection appUed to the combustible material.
3. Spacers and ties shall be of noncombustible material. No spacer or tie shall be used directly opposite the appliance or connector.
4. Where all clearance reduction systems use a ventilated air space, adequate provision for air circulation shall be provided as described.
[See Figure 5-5 and Figure 5-6.]
5. There shall be at least 1 in. (25 mm) between clearance reduction systems and combustible waUs and ceilings for reduction systems using
a ventilated air space.
6. Where a wall protector is mounted on a single flat wall away from comers, it shall have a minimum 1 inch (25 mm) air gap. To provide
adequate air circulation, the bottom and top edges, or orUy the side and top edges, or aU edges shaU be left open.
7. Mineral wool batts (blanket or board) shall have a minimum density of 8 Ib/fl? (128 kg/m') and a minimum melting point of 1,500°F (816'C).
8. Insulation material used as part of a clearance reduction system shall have a thermal conductivity of 1.0 Btu in./ff /h-'F (0.144 W/m-K)
or less.
9. There shall be at least 1 inch (25 mm) between the appliance and the protector. In no case shall the clearance between the appliance and
the combustible surface be reduced below that allowed in this table.
10. All clearances and thicknesses are minimtun; larger clearances and thicknesses are acceptable.
11. Listed single-wall connectors shall be installed in accordance with the terms of their listing and the manufacturers' instructions.
70
WATER HEATERS
Figure 5-4 -51 0.7
Construction using combustible - x
material, plastered or unplastered
w
Slieel metal or
other protection
*— Gas equipment
or vent connector
Notes:
A - Equals the clearance witli no protection specified in
Tables 5-3 and 5-4 and in the sections applying to
various types of equipment.
B - Equals the reduced clearance permitted in
accordance witli Table 5-3. Tlie protection applied to tl\e
construction using combustible material shall extend far
enough in each direction to make C equal to A.
FIGURE 5-4 Extent of Protection Necessary to
Reduce Clearances from Gas Equipment or Vent
Connectors. [NFPA 54:Figure 10.3.2.2(a)]
Mounted with side
and top edges open
Mounted with top
and bottom edges
open
Wall protector mounted
on single flat wall
Must be mounted with top
and bottom edges open
Wail protector installed in corner
- Nail or screw anchor
- Clearance
reduction system
1 in. (25 mm) nonpombustible
spacer such as slacl<ed washers,
small-diameter pipe, tubing, or
electrical conduit.
Masonry walls can be attached to combustible walls
using wall ties. Spacers should not be used directly
behind appliance or connector.
FIGURE 5-5 Wall Protection Reduction System.
[NFPA 54:Figure 10.3.2.2(b)]
Combustible wall
1 in. (25 mm)
minimum airspace
between masonry
and combustible wall
4 in. (100 mm)
nominal brick wa|
Bottom and top course
of bricl<s staggered for
ventilation
Corrugated
metal wall
ties
A strip of heavy-gauge steel
used for added support
Note: Do not place masonry wall ties directly
behind appliance or connector.
Masonry wall tie
FIGURE 5-6 Masonry Clearance Reduction System,
[NFPA 54:Figure 10.3.2.2(c)]
TABLE 5-5
Minimum Thiclcness for Galvanized Steel Vent
Connector for Low-Heat Appliances
[NFPA 54:Table 12.11.2.5]
Diameter of
Connector (in.)
Minimum Thickness
(in.)*
Less than 6
6 to less titan 10
10 to 12 inclusive
14 to 16 inclusive
Over 16
0.019
0.023
0.029
0.034
0.056
* For SI units, 1 in. = 25.4 mm; 1 in.^' = 645 mm^
metal pipe through an exterior combustible
wall, see Section 510.10.14.2. [NFPA 54:12.8.4.2]
510.7.4.3 Single-wall metal pipe used for
venting an iiicinerator shall be exposed and
readily exam.inable for its full length and
shall have suitable clearances maintamed.
[NFPA 54:12.8.4.3]
510.7.4.4 Mitiimum. clearances from single-
wall metal pipe to combustible material shall
be in accordance with Table 5-3. Reduced
clearances from single-wall metal pipe to
combustible material shall be as specified for
vent connectors in Table 54. [NFPA 54:12.8.4.4]
510.7.4.5 Where a single-wall metal pipe
passes through a roof constructed of
combustible material, a noncombustible,
nonventilating tliimble shall be used at the
point of passage. The tliimble shall extend at
71
510.7-510.10
2007 CALIFORNIA PLUMBING CODE
least 18 inches (460 mm) above and 6 inches
(150 mm) below the roof with the annular
space open at the bottom and closed only at
the top. The thimble shall be sized in
accordance with Section 510.10.14.2. [NFPA
54: 12.8.4.5]
510.7.5 Size of Single-Wall Metal Pipe. Single-
wall metal piping shall comply with the
following requirements [NFPA 54: 12.8.5]:
51 0.7.5.1 A venting system of a single-wall
metal pipe shall be sized in accordance with
one of the following methods and the gas
equipment manufacturer's instructions
[NEPA 54: 12.8.5(1)]:
(1) For a draft-hood-equipped appliance, in
accordance with this chapter.
[NPPA54:12.8.5(l,a)]
(2) For a venting system for a single
appliance with a draft hood, the areas of
the connector and the pipe each shall
not be less than the area of the
appliance flue collar or draft hood
outlet, whichever is smaller. The vent
area shall not be greater than seven
times the draft hood outlet area.
[NFPA54:12.8.5(l,b)]
(3) Other approved engineering methods.
[NFPA54:12.8.5(l,c)]
510.7.5.2 Where a single-wall metal pipe is
used and has a shape other than round, it
shall have an eqmvalent effective area equal
to the effective area of the roimd pipe for
which it is substituted, and the minimum
internal dimension of the pipe shaU be 2
inches (50 mm). [NFPA 54: 12.8.5(2)]
51 0.7.5.3 The vent cap or a roof assembly
shall have a venting capacity not less than
that of the pipe to which it is attached.
[NFPA 54: 12.8.5(3)]
510.7.6 Support of Single-Wall Metal Pipe.
AU portions of single-wall metal pipe shall be
supported for the design and weight of the
material employed. [NFPA 54: 12.8.6]
510.7.7 Marking. Single-wall metal pipe shall
comply with the marking provisioiis of Section
510.6.6. [NFPA 54:12.8.7]
510.8 Through-the-Wall Vent Termination. (See
Figure 5-12.)
510.8.1 A mechanical draft venting system shall
terminate at least 3 feet (0.9 m) above any forced
air inlet located witinin 10 feet (3.1 m).
[NFPA 54: 12.9.1]
Exception No. 1: This provision shall not
apply to the combustion air intake of a
direct-vent appliance.
Exception No. 2: This provision shall not
apply to the separation of the integral
outdoor air inlet and flue gas discharge of
listed outdoor appliances.
51 0.8.2 A mechanical draft venting system of
other than direct-vent type shall terminate at
least 4 feet (1.2 m) below, 4 feet (1.2 m) horizon-
tally from, or 1 foot (300 mm) above anydoor,
operable window, or gravity air inlet into any
building. The bottom of the vent terminal shall
be located at least 12 inches (300 mm) above grade.
[NFPA 54: 12.9.2]
510.8.3 The vent terminal of a direct-vent
appliance with an input of 10,000 Btu/h (3 kW)
or less shall be located at least 6 inches (150 mm)
from any air opening into a building, and such
an appliance with an input over 10,000 Btu/h (3
kW) but not over 50,000 Btu/h (14.7 kW) shall be
installed with a 9-inch (230 mm) vent
termination clearance, and an appliance with an
input over 50,000 Btu/h (14.7 kW) shall have at
least a 12 inch (300-mm) vent termination
clearance. The bottom of the vent terminal and
the air intake shaU be located at least 12 inches (300
mm) above grade. [NFPA 54: 12.9.3]
51 0.8.4 Through-the-wall vents for Category II
and Category IV appliances and noncategorized
condensing appliances shall not terminate over
public walkways or over an area where
condensate or vapor could create a nuisance or
hazard or could be detrimental to the operation
of regulators, relief valves, or other equipment.
Where local experience indicates that condensate
is a problem with Category I and Category in
appliances, this provision shall also apply.
[NFPA 54:12.9.4]
510.9 Condensation Drain.
510.9.1 Provision shall be made to collect and
dispose of condensate from venting systems
serving Category II and Category IV gas
utilization equipment and noncategorized
condensing appliances in accordance with
Section 510.8.4. [NFPA 54: 12.10.1]
510.9.2 Where local experience indicates that
condensation is a problem, provision shall be
made to drain off and dispose of condensate
from venting systems serving Category I and
Category III gas utilization equipment in
accordance with 510.8.4. [NFPA 54:10.9.2]
510.10 Vent Connectors for Category I Gas
Utilization Equipment.
72
WATER HEATERS
510.10
510.10.1 Where Required. A vent connector
shall be used to connect gas utilization
equipment to a gas vent, chimney, or single-
wall metal pipe, except where the gas vent,
chimney, or single-wall metal pipe is directly
connected to the equipment. [NFPA 54: 12.11.1]
510.10.2 Materials.
510.10.2.1 A vent connector shall be
made of noncombustible, corrosion resis-
tant material capable of withstanding
the vent gas temperature produced by the
gas utilization equipment and of sufficient
thickness to withstand physical damage.
[NFPA 54: 12.11.2.1]
510.10.2.2 Where the vent comiector used
for gas utilization equipment having a draft
hood or a Category I appliance is located in
or passes through an unconditioned area,
that portion of the vent connector shall be
listed Type B, Type L, or listed vent material
having equivalent insulation qualities.
[NFPA 54: 12.11.2.2]
Exception: Single-wall metal pipe
located witliin the exterior walls of the
buildmg and located in areas having a
local 99 percait winter design temperature
of 5°F or liigher.
510.10.2.3 Where the vent cormector used
for gas utilization eqtupment having a draft
hood or a Category I appHance is located in
or passes through attics and crawl spaces,
that portion of the vent connector shall be
listed Type B, Type L, or listed vent material
having equivalent insulation qualities.
[NFPA 54: 12.11,2.3]
510.10.2.4 Vent connectors for residential-
type appliances shall comply with the
foUowing: [NFPA 54: 12.11.2.4]
(1) Vent Connectors Not Installed in Attics,
Crawl Spaces, or Other Unconditioned
Areas. Vent connectors for listed gas
appliances having draft hoods and for
appliances having draft hoods and
equipped with listed conversion
burners that are not installed in attics,
crawl spaces, or other unconditioned
areas shall be one of the foUowing:
(a) Type B or Type L vent material.
(b) Galvanized sheet steel not less than
0.018-inches (0.46 mm) tliick.
(c) Aluminum (1100 or 3003 alloy or
equivalent) sheet not less than 0.027-
inches (0.69 mm) tliick.
(d) Stainless steel sheet not less titan 0.012-
inches (0.31 mm) thick. '
(e) Smootli interior wall metal pipe having
resistance to heat and corrosion equal to
or greater than that of b, c, or d above.
(f) A listed vent connector.
(2) Vent connectors shall not be covered
with insulation.
Exception: Listed insulated vent
connectors shall be installed according to
tlie terms of tlieir listing.
510.10.2.5 A vent connector for non-
residential low-heat equipment shall be a
factory-built chimney section or steel pipe
having resistance to heat and corrosion
equivalent to that for the appropriate
galvanized pipe as specified in Table 5-5.
Factory-built chimney sections shall be
joined together in accordance with the
chimney manufacturer's instructions.
[NFPA 54: 12.11.2.5]
510.10.2.6 Vent connectors for medium-
heat equipment and commercial and
industrial incinerators shall be constructed
of factory-built, medium-heat chimney
sections or steel of a tliickness not less than
that specified in Table 5-6 and shall comply
with the foUowing: [NFPA 54: 12.11.2.6]
(1) A steel vent cormector for equipment
with a vent gas temperature in excess of
1,000°F (538°C) measured at the
entrance to the connector shall be lined
with medium-duty fire brick (ASTM C
64, Specification for Refractories for
Incinerators and Boilers, Type F) or the
equivalent.
(2) The lining shall be at least 2-1/2 inches
(64 mm) thick for a vent connector
having a diameter or greatest cross
sectional dimension of 18 inches (460
mm) or less.
(3) Tlie lining shall be at least 4-1/2 inches
(110 mm) thick laid on the 4-1/2 inch
(110-mm) bed for a vent connector
having a diameter or greatest cross-
sectional dimension greater than 18
indies (460 mm).
(4) Factory-built chimney sections, if
employed, shall be joined together in
accordance with the chimney manufac-
turer's instructions.
73
Table 5-6 -510.10
2007 CALIFORNIA PLUMBING CODE
TABLE 5-6
Minimum Thickness for Steel Vent Connectors
for Medium-Heat Equipment and Commercial and
Industrial Incinerators
[NFPA 54: Table 12.11.2.6]
Vent Connector Size
Minimum
Diameter (in.)
Area (in.^)
Thickness (in.)
Up to 14
Up to 154
0.053
Over 14 to 16
154 to 201
0.067
Over 16 to 18
201 to 254
0.093
Over 18
Larger than 254 0.123
For SI units, 1 in. = 25.4 mm; 1 in.^ = 645 mml
510.10.3 Size of Vent Connector.
510.10.3.1 A vent connector for gas
titilization equipment with a single draft
hood or for a Category I fan-assisted
combustion system appliance shall be sized
and installed in accordance with this chapter
or other approved engineering methods.
[NFPA,54: 12.11.3.1]
510.10.3.2 For a single appliance having
more than one draft hood outlet or flue
collar, the manifold shall be constructed
according to the instructions of the appliance
manufacturer. Where there are no instruc-
tions, the manifold shall be designed and
constructed in accordance with approved
engineering practices. As an alternate
method, the effective area of the manifold
shall equal the combined area of the flue collars
or draft hood outlets, and the vent connectors
shall have a minimum 1-foot (0.3 m) rise.
[NFPA 54: 12.11.3.2]
510.10.3.3 Where two or more gas appliances
are connected to a common vent or chimney,
each vent connector shall be sized in accord-
ance with this chapter or other approved
engineering methods. [NFPA 54: 12.11.3.3]
As an alternative method applicable only
when all of the appliances are draft-hood-
equipped, each vent connector shall have an
effective area not less than the area of the
draft hood outlet of the appliance to which it is
connected. [NFPA 54: 12.11.3.4]
510.10.3.4 Where two or more gas appliances
are vented through a common vent connector
or vent manifold, the common vent connec-
tor or vent manifold shall be located at the
highest level consistent with available head-
room and clearance to combustible material
and shall be sized in accordance with this
chapter or other approved engineering
methods. [NFPA 54: 12.11.3.5]
As an alternate method applicable only
where there are two draft-hood-equipped
appliances, the effective area of the common
vent connector or vent manifold and all
junction fittings shall be not less than the
area of the larger vent connector plus 50
percent of the areas of smaller flue collar
outlets. [NFPA 54: 12.11.3.6]
510.10.3.5 Where the size of a vent connec-
tor is increased to overcome installation
limitations and obtain connector capacity
equal to the equipment input, the size
increase shall be made at the equipment
draft hood outlet. [NFPA 54: 12.11.3.7]
510.10.4 Two or More Appliances Connected
to a Single Vent.
510.10.4.1 Where two or more vent
connectors enter a common gas vent,
chimney flue, or single-wall metal pipe, the
smaller cormector shall enter at the highest
level consistent with the available headroom
or clearance to combustible material.
[NFPA 54: 12.11.4.1]
510.10.4.2 Vent connectors serving
Category I appliances shall not be connected
to any portion of a mechanical draft system
operating under positive static pressure,
such as those serving Category III or
Category IV appliances. [NFPA 54: 12.11.4.2]
510.10.5 Clearance. Minimum clearances
from vent connectors to combustible material
shall be in accordance with Table 5-3. [NFPA
54: 12.11.5]
Exception: The clearance between a vent
connector and combustible material shall be
permitted to be reduced where the com-
bustible material is protected as specified for
vent connectors in Table 5-4.
510.10.6 Avoid Unnecessary Bends. A vent
connector shall be installed so as to avoid turns
or other construction features that create
excessive resistance to flow of vent gases. [NFPA
54: 12.11.6]
510.10.7 Joints. Joints between sections of
connector piping and connections to flue collars
or draft hood outlets shall be fastened in
accordance with one of the following methods:
[NFPA 54: 12.11.7]
(1) By sheet metal screws.
74
WATER HEATERS
510.10
r'
(2) Vent connectors of listed vent material shall
be assembled and comiected to flue collars
or draft hood outlets in accordai'Tce with the
manufacturers' iiistructions.
(3) Other approved means.
510.10.8 Slope. A vent connector shall be
installed without any dips or sags and shall
slope upward toward the vent or chimiiey at
least 1/4 ii-i./ft. (20 mm/m). [NFPA 54: 12.11.8]
Exception: Vent connectors attached to a
medianical draft system iiistalled in accordance
with the manufacturers' mstructions.
510.10.9 Length of Vent Connector.
510.10.9.1 A vent connector shall be as
short as practical and the gas utilization
equipment located as close as practical to
the cliimney or vent. [NFPA 54: 12.11.9.1]
510.10.9.2 Tlie maximum horizontal length
of a single-wall coiTuector shall be 75 percent
of the height of the cliimney or vent except
for engineered systems. The maximum
length of an individual connector for a
chimney or vent system serving multiple
appliaiices, from tlie appliance outlet to the
junction with the common vent or another
connector, shall be 100 percent of tlie height
of the chimney or vent. [NFPA 54: 12.11.9.2]
51 0.1 0.9.3 The maximtmi horizontal length
of a Tjrpe B double-wall connector shall be
100 percent of the height of tlie chimney or
vent, except for engineered systems. The
maximum length of an individual connector
for a chimney or vent system serving
multiple appliances, from the appliance
outlet to the jmiction with tlie common vent
or anotlier coraiector, shall be 100 percent of
the height of the chimney or vent. [NFPA
54:12.11.9.3]
510.10.10 Support. A vent connector shall be
supported for the design and weight of the
material employed to maintain clearances and
prevent physical damage and separation of joints.
[NFPA 54: 12.11.10]
510.10.11 Chimney Connection. Where
entering a flue in a masonry or metal chimney,
the vent connector shall be installed above the
extreme bottom to avoid stoppage. Where a
tliimble or slip joint is used to facilitate removal
of the connector, the comiector shall be firmly
attached to or inserted into the thimble or slip
joint to prevent the connector from falling out.
Means shall be employed to prevent the
connector from entering so far as to restrict the
space between its end and the opposite wall of
the cliimney flue. [NFPA 54: 12.11.11]
510.10.12 Inspection. The entire length of a
vent connector shall be readily accessible for
inspection, cleaning, and replacement. [NFPA
54: 12.11.12]
510.10.13 Fireplaces. A vent comiector shall
not be connected to a chimney flue serving a
fireplace unless the fireplace flue opening is
permanently sealed. [NFPA 54: 12.11.13]
510.10.14 Passage through Ceilings, Floors,
or Walls.
510.10.14.1 A vent coraiector shall not pass
tlirough any ceiling, floor, or fire-resistance-
rated wall. A single-wall metal pipe
connector shall not pass through any
interior wall.
Exception: Vent connectors made of
listed Type B or Type L vent material
and serving listed equipment with draft
hoods and other equipment listed for
use with Type B gas vents that pass
through walls or partitions constructed
of combustible material shall be installed
with not less than tlie listed clearance to
combustible material.
510.10.14.2 A vent connector made of a
single-wall metal pipe shall not pass
through a combustible exterior wall unless
guarded at the point of passage by a
ventilated metal thimble not smaller than
the following: [NFPA 54: 12.11.14.2]
(1) For listed appliances equipped with
draft hoods and appliances listed for
use with Type B gas vents, the thim-
ble shall be a minimum of 4 inches (100
mm) larger in diameter than the vent
coraiector. Where there is a run of not
less tlian 6 feet (1.8 m) of vent connector in
the opening bfetween the draft hood
outlet and the tliimble, the tliimble shall
be a minimum of 2 inches (50 imn) lai^'ger
in diameter than tlie vent comiector.
(2) For unlisted appliances having draft
hoods, the tliimble shall be a minimum
of 6 inches (150 mm) larger in diameter
tlian the vent connector.
(3) For residential and low-heat appliances,
the thimble shall be a minimum of 12
75
510.10-510.13
2007 CALIFORNIA PLUMBING CODE
inches (300 mm) larger in diameter thaii
the vent connector.
Exception: In lieu of thimble
protection, all combustible material
in the wall shall be removed from
the vent connector a sufficient
distance to provide the specified
clearance from such vent connector
to combustible material. Any
material used to close up such
opening shall be noncombustible.
510.10.14.3 Vent connectors for medium-
heat equipment shall not pass through walls
or partitions constructed of combustible
material. [NFPA 54: 12.11.14.3]
510.11 Vent Connectors for Category II,
Category III, and Category IV Gas Utilization
Equipment. (See Section 510.4.) [NFPA 54:12.12]
510.12 Draft Hoods and Draft Controls.
510.12.1 Equipment Requiring Draft
Hoods. Vented gas utilization equipment
shall be installed with draft hoods.
[NFPA 54: 12.13.1]
Exception: Dual oven-type combination
ranges; incinerators; direct-vent
equipment; fan-assisted combustion
system appliances; equipment requiring
chimney draft for operation; single
firebox boilers equipped with
conversion burners with inputs greater
than 400,000 Btu/h (117 kW); equipment
equipped with blast, power, or pressure
burners that are not listed for use with
draft hoods; and equipment designed
for forced venting.
510.12.2 Installation. A draft hood supplied
with or forming a part of listed vented gas
utilization equipment shall be installed
without alteration, exactly as furnished and
specified by the equipment manufacturer.
[NFPA 54: 12.13.2] If a draft hood is not
supplied by the equipment manufacturer
where one is required, a draft
hood shall be installed, be of a listed or
approved t3rpe, and, in the absence of other
instructions, be of the same size as the
equipment flue coUar. Where a draft hood is
required with a conversion burner, it shall
be of a listed or approved type. [NFPA 54:
12.13.2.1] Where it is determined that a draft
hood of special design is needed or
preferable for a particular installation, the
installation shall be in accordance with the
recommendations of the equipment
manufacturer and shall be with the approval
of the Authority Having Jurisdiction.
[NFPA 54: 12.13.2.2]
510.12.3 Draft-Control Devices. Where a
draft-control device is part of the gas
utilization equipment or is supplied by the
equipment manufacturer, it shall be installed
in accordance with the manufacturer's
instructions. In the absence of manufacturer's
instructions, the device shall be attached to
the flue collar of the equipment or as near to
the equipment as practical. [NFPA
54: 12.13.3]
510.12.4 Additional Devices. Gas utilization
equipment (except incinerators) requiring
controlled chimney draft shall be permitted
to be equipped with a listed double-acting
barometric draft regulator installed and
adjusted in accordance with the manufacturers'
instructions. [NFPA 54: 12.13.4]
510.12.5 Location. Draft hoods and
barometric draft regulators shall be installed
in the same room or enclosure as the
equipment in such a manner as to prevent
any difference in pressure between the hood
or regiilator and the combustion air supply.
[NFPA 54: 12.13.5]
510.12.6 Positioning. Draft hoods and
draft regulators shall be installed in the
position for which they were designed
with reference to the horizontal and
vertical planes and shall be located so that
the relief opening is not obstructed by any
part of the equipment or adjacent
construction. The equipment and its draft
hood shall be located so that the relief
opening is accessible for checking vent
operation. [NFPA 54; 12.13.6]
510.12.7 Clearance. A draft hood shall be
located so that its relief opening is not less
than 6 inches (150 mm) from any surface
except that of the equipment it serves and
the venting system to which the draft
hood is connected. Where a greater or
lesser clearance is indicated on the
equipment label, the clearance shall not be
less than that specified on the label. Such
clearances shall not be reduced. [NFPA
54:12.13.7]
510.13 Manually Operated Dampers. A
manually operated damper shall not be placed
in any equipment vent connector. Fixed baffles
76
WATER HEATERS
510.13- 511.1
r
shall not be classified as manually operated
dampers. [NFPA 54:12.14]
510.14 Automatically Operated Vent Dampers.
An automatically operated vent damper shall
be of a listed type. [NFPA 54:12.15]
510.15 Obstructions. Devices that retard the
flow of vent gases shall not be installed in a vent
coraiector, chimney, or vent. The following shall
not be considered as obstructions: [NFPA
54:12.16]
(1) Draft regulators and safety controls
specifically listed for installation in venting
systems and iiistalled in accordance with the
terms of their listing.
(2) Approved draft regulators and safety
controls designed and installed in accor-
dance with approved engineering methods.
(3) Listed heat reclaimers and automatically
operated vent dampers installed in
accordance with tlie terms of their listing.
(4) Vent dampers serving listed appliances
installed in accordance with this chapter or
other approved engineering methods.
(5) Approved economizers, heat reclaimers,
and recuperators installed in venting
systems of equipment not required to be
equipped with draft hoods, provided the
gas utilization equipment manufacturer's
instructions cover the installation of such a
device in the venting system and
performance in accordance with Sections
510.3.1 and 510.3.2 is obtained.
511.0 Sizing of Category I Venting Systems.
511.1 Tliese venting tables shall not be used where
obstructions (see Section 510.15) are installed in the
venting system. The installation of vents serving
listed appliances with vent dampers shall be in
accordance with the appliance manufacturer's
instructions or in accordance with the following:
[NFPA 54: 13.1.1]
(1) Tlie maximum capacity of the vent system shall
be determined using the NAT Max column.
(2) The minimum capacity shall be determined as
though the appliance were a fan-assisted
appliance, using the FAN Min column to
determiiie the minimum capacity of the vent
system. Wliere the corresponding "FAN Min" is
"NA" the vent configuration shall not be per-
mitted and an alternative venting configuration
shall be utilized.
511.1.1 Where the vent size determined from
the tables is smaller than the appliance draft
hood outlet or flue collar, the use of the smaller
size shall be permitted provided that the
installation complies with all of the following
requirements: [NFPA 54: 13.1.2]
(1) The total vent height (H) is at least 10 feet (3 m).
(2) Vents for appliance draft hood outlets or flue
collars 12 inches (300 mm) in diameter or
smaller are not reduced more than one table
size.
(3) Vents for appliance draft hood outlets or flue
collars larger than 12 inches (300 mm) in
diameter are not reduced more than two
table sizes.
(4) The maximum capacity Usted in the tables
for a fan-assisted appliance is reduced by
10 percent (0.90 maximum table capacity).
(5) Tlie draft hood outlet is greater than 4 inches
(100 mm) in diameter. Do not connect a 3-inch
(80mm) diameter vent to a 4-inch (100mm)
diameter draft hood outlet. This provision
shall not apply to fan-assisted appUances.
511.1.2 Single-appUance venting configurations
with zero (0) lateral lengths in Tables S-S, 5-9,
and 5-12 shall have no elbows in the venting
system. For vent configurations With lateral
lengths, the venting tables include allowance for
two 90-degree turns. For each additional elbow up
to and iLicluding 45 degrees, flie maximum capacity
listed in flie venting tables shall be reduced by 5
percent. For each elbow greater than 45 degrees
up to and including 90 degrees, the maximum
capacity listed in the venting tables shall be
reduced by 10 percent. [NFPA 54: 13,1.3]
511.1.3 Zero (0) lateral (L) shall apply only to a
straight vertical vent attached to a top outlet
draft hood or flue collar. [NFPA 54: 13.1.4]
511.1.4 Sea level input ratings shall be used
when determining maximum capacity for liigh-
altitude installation. Actual input (derated for
altitude) shall be used for determining minimum
capacity for Mgh-altitude installation.
[NFPA 54: 13.1.5]
511.1.5 For appliances with more than one
iiTput rate, the minimum vent capacity (FAN
Min) determined from the tables shall be less
than the lowest appliance mput rating, and the
maximum vent capacity (FAN Max/NAT Max)
determined from the tables shall be greater than
the highest appliance rating input. [NFPA 54:
13.1.6]
511.1.6 Listed corrugated metallic chimney
liner systems in masonry chimneys shall be
sized by using Tables 5-8 or 5-9 for Type B vents
with the maximum capacity reduced by 20 pa'cent
(0.80 maximum capacity) and the minimuna
capacity as shown in Tables 5-8 or 5-9.
Corrugated metallic liner systerns iiistalled with
77
511.1-511.2
2007 CALIFORNIA PLUMBING CODE
bends or offsets shall have their maximum
capacity further reduced in accordance with
Section 511.1.2. The 20 percent reduction for
corrugated metallic chimney liner systems
includes an allowance for one long radius 90-
degree turn at the bottom of the liner. [NFPA 54:
13.1.7]
511.1.7 Where the vertical vent has a larger
diameter than the vent connector, the vertical
vent diameter shall be used to determine the
minimum vent capacity, and the connector
diameter shall be used to determine the
maximum vent capacity. The flow area of the
vertical vent shall not exceed seven times the
flow area of the listed appUance categorized vent
area, flue coUar area, or draft hood outlet area
unless designed in accordance with approved
engineering methods. [NFPA 54: 13.1.9]
511.1.8 Connection to Chimney Liners. Connec-
tions between chimney liners and listed double-
wall connectors shall be made with listed adapters
designed for such purposes. [NFPA 54: 13.1.8]
511.1.9 Vertical Vent Upsizing 7 x Rule. Where
the vertical vent has a larger diameter than the
vent connector, the vertical vent diameter shall be
tised to determine the nunimuai vent capacity, and
the connector diameter shall be used to determine
the maximum vent capacity. The flow area of the
vertical vent shall not exceed seven times the flow
area of the listed appliance categorized vent area,
flue collar area, or draft hood outlet area unless
designed in accordance with approved engineering
methods. [NFPA 54: 13.1.9]
511.1.10 Draft Hood Conversion Accessories.
Draft hood conversion accessories for use with
masonry chimneys venting listed Category I fan-
assisted appliances shall be listed and installed in
accordance with the listed accessory manu-
facturers' installation instructions. [NFPA 54:13.1.10]
511.1.11 Tables 5-8 through 5-12 shall be used
for chimneys and vents not exposed to the
outdoors below the roof hne. A Type B vent or
listed chimney lining system passing through an
unused masonry chimney flue shall not be
considered to be exposed to the outdoors. A
Type B vent passing through an tmventilated
enclosure or chase insulated to a value of not
less than R8 shall not be considered to be
exposed to the outdoors. Table 5-10 in
combination with Table 5-13 shall be
used for clay-tile-lined exterior masonry
chimneys, provided aU of the following are met:
[NFPA 54: 13.1.11
(1) The vent connector is Type B double wall.
(2) The vent connector length is limited to 1-1/2
feet for each inch (180 mm/mm) of vent
connector diameter.
(3) The appHance is draft-hood-equipped,
(4) The input rating is less than the maximimi
capacity given in Table 5-10.
(5) For a water heater, the outdoor design
temperature shall not be less than 5°F (15°C).
(6) For a space-heating appliance, the input
rating is greater than the minimima capacity
given by Table 5-13.
(7) Where the conditions of (1) through (6)
cannot be met, an alternative venting design
shall be used, such as a listed chimney
lining system.
Exception: Vents serving listed appliances
installed in accordance with the appliance
instructions and the terms of the listing.
511.1.12 Corrugated vent connectors shall not be
smaller than the listed appliance categorized
vent diameter, flue collar diameter, or draft
hood outlet diameter. [NFPA 54: 13.1.12]
511.1.13 Vent connectors shall not be upsized
more than two sizes greater than the listed
appliance categorized vent diameter, flue coUar
diameter, or draft hood outlet diameter. [NFPA
54: 13.1.13]
511.1.14 In a single run of vent or vent
connector, more than one diameter and type
shall be permitted to be used, provided that all
the sizes and types are permitted by the tables.
[NFPA 54: 13.1.14]
511.1.15 Interpolation shall be permitted in calcu-
lating capacities for vent dimensions that fall
between table entries. (See Part II-Example G.1.3.)
[NFPA 54: 13.1.15]
51 1.1.16 Extrapolation beyond the table entries
shall not be permitted. [NFPA 54: 13.1.16]
51 1.1.17 For vent heights lower than 6 feet and
higher than shown in the tables, engineering
methods shall be used to calaHate vent capacities.
[NFPA 54: 13.1.17]
511.2 Additional Requirements to lUlultiple
Appliance Vent Table 5-7 through Table 5-22.
511.2.1 Obstructions and Vent Damper.
These venting tables shall not be used where
obstructions (see Section 510.15) are installed
in the venting system. The installation of vents
serving listed appliances with vent dampers
shall be in accordance with the appliance
manufacturers' instructions or in accordance
with the foUowing: [NFPA 54: 13.2.1]
(1) The maximum capacity of the vent
connector shall be determined using the
NAT Max column.
(2) The maximum capacity of the vertical vent
78
WATER HEATERS
511.2
or chimney shall be determined using the
FAN + NAT column when the second
appliance is a fan-assisted appliance, or the
NAT + NAT column when the second
appliance is equipped with a draft hood.
(3) Tlie minimum capacity shall be determil■^ed
as if flie appliance were a fan-assisted appliance.
(a) The minimum capacity of the vent
connector shall be determined using the
FAN Min column.
(b) The FAN + FAN column shall be used
when the second appliance is a fan-
assisted appliance, and the FAN + NAT
column shall be used when the second
appliance is equipped with a draft
hood, to determine whether the vertical
vent or chimney configuration is not
permitted (NA). Where the vent
configuration is NA, tlie vent configuration
shall not be permitted and an alter-
native venting configuration shall be
utilized.
51 1 .2.2 The maximum vent connector horizontal
length shall be 18 in. /in. (180 mm/mm) of
connector diameter as shown in Table 5-7.
[NFPA 54: 13.2.2]
51 1 .2.3 The vent coniiector shall be routed to
the vent utilizing the shortest possible route.
Connectors with longer horizontal lengtlis than
tliose listed in Table 5-7 are permitted under the
following conditions: [NFPA 54: 13.2.3]
(A) The maximum capacity (FAN Max or NAT
Max) of the vent coraiector shall be reduced
10 percent for each additional multiple of
the lengtli listed in Table 5-7. For example,
the maximum length listed for a 4-inches
(lOOmm) comiector is 6 feet (1.8 m). Witli a
connector lengfli greater flian 6 feet (1.8 m) but
not exceeding 12 feet (3.7 m), the maximum
capacity must be reduced by 10 percent
(0.90 maximum vent connector capacity).
With a connector length greater than 12 feet
(3.7 m) but not exceeding 18 feet (5.5 m), the
maximum capacity must be reduced by 20
percent (0.80 maximum vent capacity).
(B) For a connector serving a fan-assisted
appliance, the minimum capacity (FAN
Min) of the connector shall be determined
by referring to the corresponding single
appliance table. For Type B double-wall
connectors. Table 5-8 shall be used. For
single-wall connectors, Table 5-9 shall be
used. The height (H) and lateral (L) shall be
measured according to tlie procedures for a
single appliance vent, as if the other
appliances were not present.
TABLE 5-7
Vent Connector Maximum Length
[NFPA 54: Table 13.2.2]
Connector Diameter
Connector l-lorizontal
IVIaximum (in.)
Lengtii (ft.)
3
4-1/2
4
6
5
7-1/2
6
9
7
10-1/2
8
12
9
13-1/2
10
15
12
18
14
21
16
24
18
27
20
30
22
33
24
36
For SI units, 1 in. = 25.4 mm; 1 ft = 0.305 m.
[NFPA 54 Table 13.2.2] ,
511.2.4 Where the vent connectors are
combined prior to entering the vertical portion
of the common vent to form a common vent
manifold, the size of the common vent
manifold and the common vent shall be
determined by applying a 10 percent reduction
(.90 x maximum common vent capacity) to the
Common Vexit Capacity part of the common
vent tables. The length of the common vent
connector manifold (LM) shall not exceed 18
in. /in. (180 mm/mm) of common vent
connector manifold diameter (D). (See Part II-
Figure G.l(k).) [NFPA 54: 13.2.4]
511.2.5 Where the common vertical vent is
offset, the maximum capacity of the common
vent shall be reduced m accordan.ce with Section
511.2.6, and the horizontal length of the common
vent offset shall not exceed 18 in. /in. (180
mm/mm) of common vent diameter. [NFPA 54:
13.2.5]
51 1 .2.6 For each elbow up to and includiiig 45
degrees in the common vent, the maximum
common vent capacity listed in the venting
tables shall be reduced by 5 percent. For
each elbow greater than 45 degrees up to and"
including 90 degrees, the maximum common
vent capacity listed in the ventuig tables shall be
reduced by 10 percent. [NFPA 54: 13.2.6]
511.2.7 The vent connector capacities listed
79
511.2
2007 CALIFORNIA PLUMBING CODE
in the common vent sizing tables include
allowance for two 90-degree elbows. For each
additional elbow up to and including 45
degrees, the maximum vent connector
capacity listed in the venting tables shall be
reduced by 5 percent. For each elbow greater
than 45 degrees up to and including 90
degrees, the maximum vent connector
capacity listed in the venting tables shall be
reduced by 10 percent. [NFPA 54: 13.2.7]
511.2.8 Common Vent Minimum Size. The
cross-sectional area of the common vent shall be
equal to or greater than the cross-sectional area
of the largest connector. [NFPA 54:13.2.8]
51 1 .2.9 Tee and Wye Fittings. Tee and wye
fittings cormected to a common vent shall be
considered as part of the common vent and
constructed of materials consistent with that of
the common vent. [NFPA 54:13.2.9]
51 1 .2.1 At the point where tee or wye fittings
connect to a common vent, the opening size of
the fitting shall be equal to the size of the
common vent. Such fittings shall not be
prohibited from having reduced size openings at
the point of connection of appliance vent
connectors. [NFPA 54: 13.2.10]
511.2.11 Sea level input ratings shall be used
when determining maximum capacity for high-
altitude installation. Actual input (derated for
altitude) shall be used for determining minimum
capacity for high-altitude installation. [NFPA 54:
13.2.11]
511.2.12 The connector rise (R) for each
appliance connector shall be measured from the
draft hood outlet or flue collar to the centerline
where the vent gas streams come together.
[NFPA 54: 13.2.12]
511.2.13 For multiple units of gas utilization
equipment all located on one floor, available
total height (H) shall be measured from the
highest draft hood outlet or flue collar up to the
level of the outlet of the common vent. [NFPA
54: 13.2.13]
511.2.14 For multistory installations, available
total height (H) for each segment of the system
shall be the vertical distance between the highest
draft hood outlet or flue collar entering that
segment and the centerline Of the next higher
interconnection tee. (See Part II-Figure G.l(j).)
[NFPA 54: 13.2.14]
511.2.15 The size of the lowest coimector and
of the vertical vent leading to the lowest
interconnection of a multistory system shall be
in accordance with Tables 5-8 or 5-9 for available
total heigjit (H) up to the lowest interconnection.
(See Part H-Figure G.l(n).) [NFPA 54: 13.2.15]
511.2.16 Where used in multistory systems,
vertical common vents shaU be Type B double-
waU and shall be installed with a listed vent cap.
[NFPA 54: 13.2.16]
511.2.17 Offsets in multistory common vent
systems shall be limited to a single offset in each
system, and systems with an offset shall comply
with all of the following: [NFPA 54: 13.2.17]
(1) The offset angle shall not exceed 45 degrees
from vertical.
(2) The horizontal length of the offset shall not
exceed 18 inches for each inch (180 mm/mm)
of common vent diameter of the segment in
which the offset is located.
(3) For the segment of the common vertical vent
containing the offset, the common vent
capacity listed in the common venting tables
shall be reduced by 20 percent (0.80 X maximum
common vent capacity).
(4) A multistory common vent shall not be
reduced in size above the offset.
511.2.18 Where two or more appliances are
connected to a vertical vent or chimney, the flow
area of the largest section of vertical vent or
chimney shall not exceed seven times the
smallest listed appUance categorized vent areas,
flue coUar area, or draft hood outlet area unless
designed in accordance with approved
engineering methods. [NFPA 54: 13.2.18]
511.2.19 For appliances with more than one
input rate, the minimum vent connector capacity
(FAN Min) determined from the tables shall be
less than the lowest appliance input rating, and
the maximum vent connector capacity (FAN Max
or NAT Max) determined from the table shall be
greater than the highest appliance input rating.
[NFPA 54: 13.2.19]
51 1 .2.20 Listed corrugated metallic chimney
liner systems in masonry chimneys shall be
sized by using Tables 5-14 or 5-15 for Type B
vents, with the maximtim capacity reduced by
20 percent (0.80 maximum capacity) and the
minimiim capacity as shown in Tables 5-14 or
5-15. Corrugated metallic liner systems
installed with bends or offsets shall have their
maximum capacity further reduced in accordance
with Sections 511.2.5 and 511.2.6. The 20
percent reduction for corrugated metallic
chimney liner systems includes an allowance
for one long radius 90-degree turn at the
bottom of the liner. [NFPA 54: 13.i.2Ci]'
511.2.21 Tables 5-14 and 5-15 shaU be used for
chimneys and vents not exposed to the outdoors
below the roof line. A Type B vent passing
80
WATER HEATERS
511 .2 - Figure 5-7
through an unventilated enclosure or chase
insulated to a value of not less tlian R8 shall not
be considered to be exposed to the outdoors.
Tables 5-19 and 5-20 shall be used for clay-tile-
lined exterior masoniy cliiiTineys, provided all of
the following conditions are met: [NFPA
54:13.2.22]
(1) Vent connector is Type B double-wall.
(2) At least one appliance is draft-hood-
equipped.
(3) The conabined appliance input rating is less
tlaan tlie maximum capacity given by Table
5-19 (for NAT + NAT) or Table 5-21 (for
FAN + NAT).
(4) The input rating of each space-heating
appliance is greater than the minimum
input rating given by Table 5-20 (for
NAT + NAT) or Table 5-21 (for FAN + NAT).
(5) The vent coimector sizing is in accordance
with Table 5-16.
(6) Where these conditions carmot be met, an
alternative venting design shall be used,
such as a listed cliimi-rey lining system.
Exception: Vents serving listed appliances
installed in accordance with the appliance
manufacturers' installation instructions.
51 1 .2.22 Vent coimectors shall not be increased
more than two sizes greater than the listed
appliance categorized vent diameter, flue collar
diameter, or draft hood outlet diameter. Vent
connectors for draft-hood-equipped appliances
shall not be smaller than the draft hood outlet
diameter. Where vent connector sizes determined
from the tables for fan-assisted appliances are
smaller tlian the flue collar diameter, the use of
the smaller sizes shall be permitted provided
that the installation complies with all of the
following conditions: [NFPA 54: 13.2.24]
(1) Vent connectors for fan-assisted appliance
flue collars 12 inches (300 mm) in diameter
or smaller are not reduced by more than one
table size [e.g., 12 inches to 10 in. (300 mm to
250 rma) is a one-size reduction] and those
larger than 12 inclies (300 mm) in diameter
are not reduced more than two table sizes
[e.g., 24 inch to 20 inch (610 mm to 510 mm)
is a two-size reduction].
(2) Fan-assisted appliances are common vented
with a draft-hood-equipped appliance.
(3) The vent connector has a smoodi interior wall.
511.2.23 All combinations of pipe sizes,
single-wall, and double-wall metal pipe
shall be allowed witliin any connector run
or withiii the common vent, provided ALL
of the appropriate tables permit ALL of the
desired sizes and types of pipe, as if they
were used for the entire length of tlie subject
connector or vent. Where single-wall and
Type B double-wall metal pipes are used for
vent connectors within the same venting
system, the common vent must be sized
using Tables 5-15 or 5-17 as appropriate.
[NFPA 54: 13.2.25]
51 1 .2.24 Where a table permits more tlian one
diameter of pipe to be used for a connector or
vent, all tlie permitted sizes shall be permitted to
be used. [NFPA 54: 13.2.26]
511.2.25 Interpolation shall be permitted in
calculating capacities for vent dimensions that
fall between table entiles. (See Part n Aniiex G.1.3.)
[NFPA 54: 13.2.27]
511.2.26 Extrapolation beyond the table
entries shall not be permitted. [NFPA 54: 13.2.28]
51 1 .2.27 For vent heights lower than 6 feet and
higher than shown in the tables, engineering
methods shall be used to calculate vent capacities.
[NFPA 54: 13.2.28]
512.0 Direct-Vent Equipment. Listed direct-vent
gas utilization equipment shall be considered
properly vented where installed in accordance with
the terms of its listing, the manufacturers'
instructions, and Section 510.8.3. [NFPA 54: 12.3.5]
Chimney or gas vent
- — Opening
Opening
FIGURE 5-7 All Combustion Air from Indoor
Spaces through Indoor Combustion Air
Openings. [NFPA 54: Figure A.9.3.2.3(1)]
81
Figure 5-8 - Figure 5-1 1
2007 CALIFORNIA PLUIVIBING CODE
-Chimney or gas vent
Ventilation louvers
(each end of attic)
Alternate
air inlet—
Furnace
Water
heater
,1 ,„ JIJIJI
^
•Outlet air
/
Inlet air
Si
XZE
1 ^^
i— Ventilation louvers for ■
unheated crawl space
• Chimney or gas vent
FIGURE 5-8 All Combustion Air from Outdoors -
Inlet Air from Ventilated Crawl Space and Outlet
Air to Ventilated Attic. [NFPA 54: Figure
A.9.3.3.1(a)]
FIGURE 5-10 All Combustion Air from Outdoors
through Horizontal Ducts. [NFPA 54: Figure
A.9.3.3.1(2)]
Chimney or gas vent
Ventilation louvers
(each end of attic)
Inlet air duct
[ends1ft(30Omm)
above floor]
xn
I'i'i'i'i'i'i'i'
I
I r I I I I I I
FIGURE 5-9 All Combustion Air from Outdoors
through Ventilated Attic. [NFPA 54: Figure
A.9.3.3.1(1)(b)]
Chimney or gas vent
J< — Opening
Alternate
opening
location
FIGURE 5-11 All Combustion Air from Outdoors
through Single Combustion Air Opening.
[NFPA 54: Figure A.9.3.3.2]
82
WATER HEATERS
Figure 5-12 - Figure 5-13
Mechanical
draft vent
terminal
{see 510.8.1)
Direct vent terminal clearance
Minimum clearance, C
Input (Btu/hr) Clearance (in.)
10.000 or less 6
10.001 to 50,000 9
Over 50,000 12
(see 10.8.3)
For SI units: 1 ft = 0.305 m; 1 in. = 25.4 mm;
1 Btu/hr = 0.293 W
Forced air
inlet
FIGURE 5-12 Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems. [NFPA 54: Figure A.12.9]
(2'C)
99% Winter Design Temperatures for the Contiguous United States
This map Is a necessarily generalized guide to temperatures In the contiguous United States. Temperatures shown for areas
such as mountainous regions and large urban centers may not be accurate, The data used to develop this map are from the
1993ASHRAEHandbook — Fundamentals (Chapter 24, Table 1; Climate Conditions for the United States). - -
For 99% winter design temperatures in Alas!5a, consult the ASHRAE Handbook — Fundamentals.
99% winter design temperatures for Hawaii are greater than 37'F.
FIGURE 5-13 Range of Winter Design Temperatures Used in Analyzing Exterior Masonry Chimneys in
the United States.
83
Table 5-8
2007 CALIFORNIA PLUMBING CODE
Table 5-8 Type B Double-Wall Gas Vent
Lateral
L
(ft)
Number of Appliances:
Single
Appliance Type:
Category I
Appliance Vent Connection:
Connected Directly to Vent
Vent Diameter
-I>(U1.
3
4
5
6
7
8
9
Appliance Input Rating
m Thousands of Btu per
Hour
Height
FAN
NAT
^ax
FAN
NAT
Max
FAN [NAT
FAN
NAT
Ma,
FAN NAT
FAN
NAT"
Masi
FAN
NATj
(ft)
Min
Max
Min
Max
Min
Max 1 Miix
Min
Max
Min
Max , Max
Min
Max
Mm
Max
Maxj
6
78
•16
152
f
251 141
375
205
524 ' 2*85
098
370
897
470
2
IS
51
38
18
97
i'(ir
27
157 1 IOB
32
232
137
44
321 ! , ,217
53
425
, 2Sj>'
63
543
M
4
21
49
34
30
04
64
39
153 1 103
SO
227
1S3
66
316 , 211
79
419
279
93
536
369
.33:1
S
25
48
32
36
91
61
47
149 ' 1(10
59
223
,;,49
78
310 206
93
413
273
110
630 ,
8
84
50
165
94
276 1 l6B
415
235
683 1' j!20
780
416
1006 '
S3t
q
12
57
40
16
109
7S
25
178 nil
28
283
180
42
365 ?47
50
483
322
60
619
418
5
23
63
38
32
103
71,
42
171 Ufe
63
255
' 173
70
356 237
S3
473
313
99
007
407
8
28
49
35
39
98
'66
51
164 ' 109
64
247
165
84
347 , 227
99
463
303
117
596
39(1
10
S8
■53I
175
100
295 ' 168
447
' 253
631 , 345
847
m,
1096
5SS
2
12
61
42
17
118
81
23
194 12s
26
289
ite
40
402 2W
48
533
855
57
684
45 a
«
23
57
1 40
32
113
77
41
187 ' 124
52
280
m
68
392 ' iW
81
522
■ ' b4B|
95
671
44^
10
30
51
3s'
41
104
70
64
176 '116
67
267
175
88
378 1^ 1, J43,.
104
504
,' '.:t3Jo
122
651
425;
15
94
Si
191
us'
327 1 'm
502
283
716 390
970
',623'
1283
6S.J
')
11
69
-»
15
136
93
20
228 !; 160'
22
339
,, 225
38
475 816
46
633
1' .'414
63
815 1
644
5
22
65
43
30
130
87
39
219 142
49
330
217
64
463 ' 300
76
820
403
00
800 1
623
10
29
59
41
40
121
82
51
206 133
64
315
• 208
84
'145 ' 28a
99
600
386
116
777
507
15
35
53
37
48
112
■78
61
195 ] i2S
76
301
198
98
429 27S
115
580
•in
134
755
40 1|
20
97
61'
202
119
349 '202
540
8d7
776 ' 4J0
1057
57'6
1384 1
75S
2
10
75
51
14
149
'100
18
250 165
20
377
249
33
531 \ .3;t(i,
41
711
,470
60
917
612
5
21
71
.48
29
143
»
38
242 , 160'
47
367
'241
62
519 , 337
73
897
. 46|i
86
902
599
10
28
64
4+
38
133
m
50
229 f 150
62
351
228
81
499 321
93
675
' 443
112
877
576
15
34
58
. 40
46
124
84
59
217 1 142,
73
337
217
94
481 SOS
111
654
487
129
863 f
ihi
20
48
58
35
55
116
■78
69
206 ' ' )34
84
322
,206
107
484 295
125
634
410
145
830
53^
30
100
64
213
128
374 220
587
338
853 475
1173
650
1348
833
9
9
HI
50
13
166
112
14
283 18B
18
432
280
27
613 394
33
826
536
42
1072
70d
5
21
77
54
28
180
108
36
27S 178
45
421
273
58
600 886
69
811
324
82
1056
6Se|
10
27
70
50
37
150
103
48
262 1 171
59
405
261
77
580 ' SVl
91
788
307
107
1028
668
15
33
61
NfV
44
141
96
67
249 163
70
389
,249
90
360 S37
105
763
490
124
1002 ■
64!i
20
56
58
NA
53
132
90
66
237 1 154
80
374
237
102
542 1 343
119
743 1
-t''?,
139
977 ,
628
30
NA
NA
NA
73
113
NA
88
214 1 NA'
104
348
219
131
507 ' 321
149
702 1
444
171
929',
694
-lO
101
57
218
134
397 232.
633
363
932 »|lfi
1297
' 7I>S
1730 .
95SJ
2
8
86
81'
11
183
122'
14
320 [ 206
15
497
314'
22
716 446
26
975 1
815
33
1276
81;^
5
20
82
NA
27
177
119
35
312 J 200
43
487
, 3g,Bi
55
702 ,' 1 1 438'
65
960 '
' 605,
77
1269 1'
798
10
25
76
NA
35
168
114
45
299 190
36
471
298
73
681 426
88
935
689
101
1230
77^
16
59
70
NA
42
158
IfJA
54
287 1 18U
. 66
455
,s>sa
85
682 . 413
100
911
372
117
1203
74:^
723
20
NA
NA
nN;V
50
149
NA'
63
275 1 16!)
76
440
270
97
842 1 401,
113
888
556
131
1176
30
NA
NA
Nf
69
131
NA
84
250 NA
99
410
259
123
606 S76
141
844
522
161
1123 1
' 67q
100
NA
NA
' NA
218
NA
407 NA'
666
400
997 660
1411
'V70
1908
104(|
93S
2
NA
NA
NA
10
194
NA
12
354 NA
13
686
S75
18
831 510
21
1135
Voo
25
1536 ,
6
NA
NA
NA
26
189
NA
33
347 NA
40
357
ai?sii
62
820 , ' -qOi
60
1141
692
71
1519 1
926
10
NA
NA
NA
33
182
'na
43
335 NA
53
542
' 361
68
801 493'
80
1118
''679
94
1492 ]
91()
15
NA
NA
N,y
40
174
■NA
30
321 NA
62
528
;i353
80
782 4821
93
1093
■ 066
109
1465
849
20
NA
NA
NA
47
168
NA
59
311 Na
71
513
34-1
90
783 4'71
105
1073 1
653
122
1438
30
NA
NA
"NA-
NA
NA
NA
78
290 1 NA
92
■183
... ,^^
113
726~-'*B
131
1029 '
62/
149
1387 1
50
NA
NA
NA
NA
NA
,NA
NA
NA NA
147
428
MA
180
661 ,,' ,406
197
944
875
217
1288 1
787
[NFPA 54 Table 13.1 (a)]
84
WATER HEATERS
Table 5-8 continued
Table 5-8 continued
Heiglil Lateral
H I
(ft) (fl)
Number of Appliances; Single
Appliance Type:
Appliance Vent Connection: Connected DireclJ}' to Vent
Category 1
VcnlDinmeter— iJ(in.)
16
18
Appliance Input Rating in Thousands of Blu per Hour
FAN
FAN
Mm Max |fj^^
018 4017 Immi
78!8pjl3ti:
101 4^54
1W 41 1
010 VOZ ||'"fl)^()'
lav m
03 1244 BsM
149 UJiP
187 U04 1;
srsi fa6p
■140 in IfeJ
641 tOtl if™
2
5
10
15
159
106
195
185
K3B
1019
1003
977
951
202 1418
9929
114 S062
27 200')
257 1970
4429
147 2719
220 2090
28 f 2li59
10 999 j
940 r2 1
501 r 2
509 ri7
005 C 1 J I
2
5
10
16
20
1750
1180
1133
11 OS
1078
1052
r97 [
81 1094 I
135 1(74
172 ir41
195 1019 ftSM!
970!
107 2949
174 2920
20 2282
248 2245
27J 2210
494R
199 -1097 i
219 9071
279 90S") j
90S 29SS
995 2948
2
5
10
IB
20
SO
1977
1851
1992
1901
1272
1249
1180
9004
74 2004 jraM
127 1981 P""-
104 1J44 tel
187 1 OS
207 1879 J
240 180 lift]
4252
Jk. 2786
104 2769
OJ 2716
97 2074
2(0 2099
285
499
5J5
5J0
099
739
19 RIB
sri7
8674
8p0o
8497
8970 I
8999 i
2
6
10
' 15
20
SO
41
90
118
130
151
18S
2291
1020
1000
1507
1598
1505
1440
8S 9409
151 9980
3992
9286
191 4520
249 4404
274 4409
900 4950
i( ( 14 Hi
251 10 78S
194 10 797
401 10 f'
512 10 570
580 10 488
072 10 9 8
12!
2
5
10
15
20
.90
60
30
82
108
120
141
170
241
2491
1976
1955
1929
1892
1801
1802
1088
5729
7 4913
190 4282
180 4211
200 4182
220 4199
7914
95 6894
172 5797
229 5737
252 6078
277 5019
919 5505
416 5289
20 578 I
204 14 64
941 14 204
190 14105
487 14 007
529 13J10
5J2 19 7'>0
752 13 954
For SI units, 1 in. = 25,4 ram, 1 ft = 0.30.5 m, 1000 Btu/lir = 0.293 IcW, 1 in.== = 64.5 mini
[NFPA 54 Table 13.1(a)]
85
Table 5-9
2007 CALIFORNIA PLUMBING CODE
Table 5-9 Type B Double-Wall Vent
Lateral
i
(ft)
Niunber of
Appliances:
Sing
e
Appliance Type:
Category I
Appliance Vent Connection:
Sing
e Wall Metal Connector
Vent Diameter — D (in.)
3
4
5
6
7
8
9
10
12
Appliance
Input Rating in Tiiousands of Btu per
Hour
Height
FAN
NiT
FAN
NAT
Max
FAN
NAT
Max'
FAN
NAT
Max
FAN
nat'
Mat
E,VN
NAT
Max
FAN
NAT'
Mas'-
FAN
kAT
FAN
NAT
(ft)
Mln
Max
Min
Max
Min
Max
Min Max
Min
Max
Min
Max
Mm
Max
Min
Max
Min
Max
Max
1)
38
77
4S
39
151
s:l
83
249
140.
126 373
ii)4
163
622
284
211
695 I 369
267
894
460
371
1118
.669
537
1839 849
2
39
51
,36
60
96
66
85
156
,ip4
123 231
165
139
320
213
201
423
284
251
541
368
347
673
.4.53
498
979 648
4
NA
NA
33
74
92
63
102
132
lite
146 225
152
187
313
208
237
416
277
295
633
360
409
664
443
.584
971 638
6
NA
NA
31
83
89
60
114
147
99
163 220
MS'
207
307
a()&
263
409
27]
327
626
332
449
656
433
638
982 . 627
8
37
83
I'i50
58
164
93
83
273
164
123 412
234
161
580
3^9
208
777
414
258
1002
630
360
1237
osa
,521
1852
967
2
39
SO
89
59
108
78
83
176
11*)
121 261
179
135
303
'246
197
482
3?l
246
617
417
339
788
613
488
1120
74.'^
S
NA
NA
87
77
102
69
107
108
114
151 232
1^1
193
352
233
245
470
311
305
604
4(H
418
754
300
698
1104 ' 730'
8
NA
NA
3S
90
95
1,64
122
161
107
175 243
163
223
342
226
230
438
300
3.H
591
392
470
740
486
665
1089 716
10
37
87
B9
57
174
OS
82
293
165
120 '144
234
158
628
344
202
8M
•W9
253
1093
584
331
1373
718.
507
2031 1037
2
39
SI
41
59
117
SV
82
193
12?
119 287
194
133
400
272
193
631
334
242
681
456
332
849
6S9
475
1242 848!
5
52
53
,39
78
HI
1761
105
183
,122
148 277
,186
190
388
,?S,l',
241
518
3'H
299
667
'44?,'
409
834
'i-^i
.584
1224 S2B
10
NA
NA
'f
97
100
Si
132
171
''m '
188 281
'iP
237
369
2fHl
296
497
325'
363
643
, 423]
492
808
520'
688
1194 788
15
38
93
'67'
56
190
1
lU
SO
323
'1^6
118 499
2(^3
133
713
's$s
193
906
S23'.
244
1239
6S1"
336
1591
838
483
2374 1287
9
38
69
47
37
136
9?
SO
223
149
115 337
224
148
473
3H
187
631
413
232
812
1,1 643
319
1013
673
467
1491 983
5
51
03
, 44
75
128
96
102
216
140
144 326
217
182
459
?'-)$-
231
616
400
287
793
526
392
997
657
.362
1469 963
10
NA
NA
39
95
116
79
128
201
131
1S2 308
2,03
228
438
,284
284
392
98i,
349
768
501
470
966
628
864
1.1.33 928
16
NA
NA
NA
NA
NA
.72
158
186
>.¥
220 290
19?
272
418
2fSfl
334
568
3(J7'
404
742
,484
540
937
,601
730
1399 894
20
35
96
00-
54
200
118
78
346
aqj
114 337
308
149
772
i-m;
190
lOni
573
238
1379
'756
326
1751
927
473
2631 • 1346
2
37
74
'60
36
!■»
1,9!)
78
248
m
113 375
.24»
144
528
m
182
708
463 i
227
914
,811
309
1148
754
443
1689 1098
5
30
68
■>7
73
140
9*
100
239
■ M;
141 363
239
178
514
3S.ll
224
692
457
279
896
596
381
1126
.734.
547
1665 1074
10
NA
NA
,1*1
93
129
S(S
123
223
14(4
177 344
'224
'210
222
491
316
277
666
437.
139
866
570
457
1092
,702'
6.16
1626 1037
15
NA
NA
•N/i-
NA
NA
SO
153
208
136
216 325
264
469
301
325
640
419
393
838
649
526
1060
877
730
1587 ' I'OOS
20
NA
NA
NA
NA
NA
NA
186
192
12(1
254 306
im
309
<14S
285
374
616
400
4-18
810
626
592
1028
,651
808
1530 973
30
34
99
'OS
53
211
127
70
372
219
1 10 384
334
l-W
849
472
184
1168
617
229
1542
852
312
1971
1056
4i)4
2996 15-15
9
37
SO
SB
65
164
III
76
281
183
109 429
279
139
610
392
175
823
533
219
1069
698
296
1346
893
424
1999 1908
n
49
74
32
72
157 1 lOS
98
271
173
136 417
271
171
395
882
215
806
521
269
1049
884
366
1324
840
524
1971 1283
10
NA
NA
NA
91
I'M
98
122
253
168
171 397
257
213
570
367
266
777
501
327
1017
662
«0
1287
821
620
1927 1243
15
NA
NA
NA
115
131
NA
151
239
157
208 377
242
253
547
349
312
750
481
379
983
688'
307
1261
794
702
1884 1205
20
NA
NA
NA
NA
NA
NA
181
223
|Nf
246 357
228
298
324
333,
360
723
46l'
433
933
615
370
1216
,-a».
780
1841 [,1166(
30
NA
NA
nX"
NA
NA
NA
NA
NA
NA
NA NA
NA
389
477
SOS
461
1170
420'
541
896
574'
704
1147
7'>0
9;!7
1750 1101
50
33
99
66 1
31
213
' 133
73
394
'23i)
105 629
kW
13S
928
615
176
1292
1
704
220
1724
948.
295
2223
1189
-128
3432 1SI8
9
3S
84
01-
53
181
121
73
313
'205.
104 495
3^2
133
712
■443
168
971
61|J
209
1273
811
280
1615
1007
401
2426 1609
5
48
80
II^IA
70
174
M%
94
303
19A
131 482
305
184
696
.436.
204
963
60*l'
257
1252
,79n'
347
1391
■ 991
498
2.396 MSlO
10
NA
NA
NA
89
IBO
NA
lis
292
ISO
162 461
292
203
671
4^0.
253
923
583
313
1217
785
418
1561
1)63
689
2347 1 1465
15
NA
NA
NA
112
148
NA
14S
275
|H
199 441
280
2-14
646
|405
299
894
562,
363
1183
736
481
1512
934
688
2299 ! 1421
20
NA
NA
^A
NA
NA
.NA
176
257
>NA
236 420
im
286
022
389.
343
866
543,
416
1130
.708'
344
1473
906
741
2261 1387
30
NA
NA
NA
NA
NA
NA
NA
NA
NA
315 370
NA
373
573
NA
442
809
:-.02.
621
1086
,649
074
1389
S4S
892
2159 1.318
100
NA
NA
NA
49
214
NA
69
403
NA
100 059
3!)S
131
991
635 .
166
1404
70!il
207
1900
10!i3
273
2479
1300
3S5
3912 2042
2
NA
NA
NA
51
192
NA
70
361
NA
98 563
8^3
126
828
508,
138
1152
698
196
1332
933
259
1970
1168
.371
3021 1817
5
NA
NA
NA ,
67
186
NA
90
342
NAi
125 531 1 3()S|
136
813
soil
194
1134
(iS8l
240
IBU
921
322
1946
1163
460
2990 1796
10
NA
NA
NA
85
175
NA
113
324
NAi
133 332
35'4-
191
7S9
•M,
238
1104
672
293
1477
!l02
389
1905
1.133
5.17
2938 1763
IS
NA
NA
.NA
132
162
na
ISS
310
NA
188 311
343
230
764
473
281
1075
'658
342
1443
884
447
1865
lUO
618
2388 1730
20
NA
NA
NA
NA
NA
NA
168
295
Nf'l
224 487
NA
270
739
■ioR
325
1046
6^9
391
1410
861
507
1823
1087
690
2838 1696
30
NA
NA
NA
NA
NA
NA
231
264
MA'
301 448
i&
335
085
nA
41S
988
NA
191
1343
824
631
1747
lt)41
834
2739 1627
SO
NA
NA
NA
NA
NA
NA
NA
NA
INA,
NA NA
n
540
684
NA
617
86b
NAl
711
1203
NA
896
1391
NA
1138
25.17 I4S9
For SI units, 1 in. = 25.4 mm, 1 ft = 0.305 m, 1000 Btu/hr = 0.293 1<W, 1 in." = 645 mm'-.
[NFPA 54 Table 13.1(b)]
86
WATER HEATERS
Table 5-10
Table 5-10 Masonry Chimney
Number o
r Appliances!
Single
Appliance T^e:
Categor)' I
Appliance Vent Connection;
Tj-pe B Doulile-Wali Connector
Tvi
le B Boiible-Wail Connector Diameter — D (in. )
To lie used tviUi diimnuy arbuti tvilliin Uio size
limits at lioltoin
a
i
5
6
»
6
9
JO
12
App
lance Input Rating in Tliousands of Btu per Hour
Height Lateral
FAN p
i
FAN
Maxi
FAN
sir
''I
FAN
[Jtlak
FAN
^ax"
FAN
&
FAN
¥=1
FAN
25
FAN
Wi
(ft) (ft)
Min
Mas 1
Min
Mas.
Min
Mai.
Mm
Max
Mm
Max
Min
Max
Mm Max
Mm Max
Mm
Mtx
t' 1
^a>
6 2
NA
naII
NA
NAlW
NA11M?I
NA
NA
m
N\
NA
Iff
NA
NA
m
NA
NAffST
NA NA
Wfj
NA NA
f?i'
NA
NA "4681
6
NA
NASI
NA
NA
KS
k
NA
NA
m
NA
NA
U
NA
NAJ^f^l
NA NA
1 ^^§
NA NA
NA
NA 1 teqi|
8 2
NA
NA Sf
NA
na||'
NA
NA
1 "
NA
NA
^M
NA
NA
m
NA
NAJW
NA h7|
84 .
t
00 7-8
I'Al
in
n'li
HI 4 I'lMI
B
NA
NA |||i|2'&!
NA
NAIllfe
NA
NA
NA
NA
[Pi
NA
NA
NA
NA NA
14<) 711
ife
20!
1007]||(iJ()
8
NA
NA |g|
NA
NA
'tf^
NA
NA
'iR
NA
NA
4s?j
NA
NA
NA
<M
NA N\
171 fO'-
111,
211
090 1 '(1^1
10 2
NA
NA '11}
NA
NA
§
NA
NA
:;{?
NA
NA
H
NA
NA
%
OS
51 '1
ft'
rifisi
S2 a
Nt
18 810
i*
110
1144
iW
5
NA
NA lifH
NA
NA
W
NA
NA
NA
NA
NA
NA
m
NA
NA
124 018
ht
140 71
'•
1124
'l7)2
10
NA
NA
NA
W
NA
NA
NA
NA
NA
NA
NA
NA
155 tlO
182 70
444
2K
1001
iW
15 ■' ■ 2
NA
NAfllll
NA Igi
NA l|2|!
NA
NA
1
NA
NA
1
N\
NA
m
51
475
it
m
04
HI
77 7
m
12 JOh
5(i2
1 -
1170
I'fl^i
5
10
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
80
120
594
605
118 7o
148 7 7
ife94
11! 140
71 91'
11
.07
181
" 1
1152
1113
15
NA
NA Ifll
NA
NA
Iw
NA
NA
NA
NA
kl"l
NA
NA
NA
NA 1^81,1
171 (9«'(||7j^
118 880
18
i,e
1280
20 2
NA
NA
NA
NA
M
NA
NA
-*
NA
NA
M
51
522
\ff
01
1- tf-»
058 [r fl6j)
71 8f7 *491
87 1081
li'?
121
1648
9S1
B
NA
NA
NA
NA
iN
NA
NA
NA
NA
|||
80
501
m
lP7
lo
IH 84
to
111 1051
597
171
1521 f\<j
10
NA
NA
mm
NA
NA
NA
NA
NA
NA
NA
NA
122
027 ■l|<i2l
111 8 1
iiWl*
07 1022
lOS
'21
14a2l,S79
1441 i"M
140r f 1^7
15
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
220
NA
^^ 111
NA \^^S'
iiri -s
''ftV
191 987
ill
2nl
20
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
lM(^
NA
18(1 7 1
il-^iiri
214 W
511
27-
30 2
NA
NA
IPI
NA
NA
fi'p'4
NA
N^ B)
NA
NA
¥'
47
5R1
g
57
702 ll^lllj
(iS i 85
'fat
81 1240
717
111
1711 llll'w
S
NA
NA
wl
NA
NA
p
NA
NA
NA
k
75
55!
00
741 tthV
700 M
NA M*l
NA lliW2h
100 sr l(^^ol
2'- iai(
6b1
11
171-0 rt4
10
NA
NA
A
NA
NA
NA
NA dif
NA
NA
NA
NA
Bid?
115
1 15 927
m
158 1171
bIH
210
1721 |ll|)2,
1171 1^1
15
NA
NA
NA
NA
NA
NA 'll«
NA
NA
w
NA
NA
NA
1511 flOl
18! UW
Ii2l
21)
20
NA
NA
M
NA
NA
MA
NA
NA
M
NA
NA
^91
NA
NA
NA
170 8
201 1101
t')'
'64
1018 JO'J^l
1500 ^77
30
NA
NA
m
NA
NA
mil
NA
NA
m
NA
NA
iJ^Af
NA
NA
V^
NA
NA|i|^^8|
NA NA
V!i=
49 IOId
iV,
118
50 2
NA
NA
m
NA
NA
$m
NA
NA
vV.
NA
NA
M\
NA
NA
m\
8!
840 IM
NA %i4
111 110
At
72 IIH
i.11
1)
2080
l441
B
NA
NA
W
NA
NA
NA
NA
NA
NA
^so
NA
NA
?|
81
08 1181
no 1187
779
Fi
9051
10
NA
NA
NA
NA
NA
NA
NA
NA flf
NA
NA
NA
120 104
147 1147
7H
11.
2(100
i'i47
15
NA
NV
^.
NA
NA
NA
N\
NA
NA J^OIj
NA
NA
?m
NA
NA t W
140 10
'W
170 1107
702
U
1901
igili
20
NA
NA
\"
NA
m
NA
NA
NA
NA ft*
NA
NA
ififli
NA
NA j|li?jl
NA Ii827|
105 977
,w
IJO I'Ol
1
210
1116 M050
30
NA
NA
NA
\
NA
m
NA
NA
NA
NA
NA
*
NA
NA NA
211 1190
1
21
1812
igiji
Miiiiimun
U
11
1 , 1
III 1
iS
Ai II
->» it'll
50
w
01
8
"Jf
1,
112
'm
Internal
ni-eaol"
ih
IJt
'I'i'l
'1
nil
cliiinncy
(in.') ■
'i«
lll\
III
Maximum
41
es
M
ni
Ill
mi\)\
2m Iff
352
44
111"
702| iHf
internal
I'l"
1
r|
'lli
area of
k
1 1,
till 1
ll"|l
n
jl|
cliimncy
■ 1 1 1'l
li t
1
(i".-')
i li'
''
Li*
I 1*
For SI units, 1 in. = 25.4 mm, 1 ft = 0.305 m, 1000 Btu/lir = 0.29B IM', 1 m •
INFPA 54 Table .13.1(c)]
= (545 ram-
87
Table 5-11
2007 CALIFORNIA PLUMBING CODE
Table 5-11 Masonry Chimney
Number of Appliances:
SingI
AppH
ance t^pe:
Categoiy I
Appliance
Vent Connectiom
Single-Wall Metal Connector
Single-Wall Metal Connector Diameter — £) (In.)
aigUt Lateral
H L
ft) (ft)
To be used irith chimney
areas
^vithin tlie size limits at bottom
3
4
5
6
7
8
9
10
12
Appliance Input Kating in Thousands of Btu per Hour
H
*
[
i '
FAN XAT
FAN NAT;
FAN
NAT
Max
FAN NAT
FAN
i^T
FAN NAT
FAN ftiT
FAN
',N4T
FAN jN^T
Min
Max ,Ma.v
Min
Mas Max
Min
Max
Miu
Max [Mai:
Min
Max IMax,
Mui
Max 'Max
Min
Max ,jllax
Min
Max
Max
Min
Max Max
2
NA
NA ' 2S
NA
NA j ' 52
NA
NA
SB
NA
NA [ Vji
NA
NA
ISO
NA
NA 1 247
NA
NA 319
NA
NA
400
NA
SI
3
NA
NA j 25
NA
NA 4tll
NA
NA
81
NA
NA ' 1 18
NA
NA
184
NA
NA 1 230
NA
NA 1 297
NA
NA
375
NA
8
1
NA
NA 291
NA
NA <'6a
NA
NA
BS
NA
NA t 145
NA
NA
197
NA
NA 2S6
NA
NA t 349
382
726
•HB
649
1021 (S6(
5
NA
NA ige
NA
NA 51
NA
NA
87
NA
NA 133
NA
NA
162
NA
NA 2'(6
NA
NA , 827
NA
NA
4??
673
1003 [, 8,3{
8
NA
NA 2»i
NA
NA 47
NA
NA
82
NA
NA [ 126
NA
NA
174
NA
NA 237
NA
NA ( 317
NA
NA
'408
747
985 1 ' 62'
10
<>
NA
NaI 31
NA
NA ' 81
NA
NA
I02
NA
NA , 18,1
NA
NA
22P
216
518 297
271
654 1 387
373
808
49()
536
1142 1 72S
5
NA
NA , 28
NA
NA| Bi;
NA
NA
i9S
NA
NA 1 Ul
NA
NA
208
NA
NA 1 278
334
635 364
459
789
'1465
657
1121 '' 71t
10
NA
NA [' ^'1
NA
NA 1 49
NA
NA
86
NA
NA , 137
NA
NA
189
NA
NA SSl
NA
NA 1 1)45
547
758
.m
771
1088 66£
IS
2
NA
NA ' 35
NA
NAfillf
NA
NA
I'US
NA
NA lif's'
160
473
;S49
211
811 ' 38S
264
776 I'Wi
362
985
111 1.
520
1373 ,'8,41
5
NA
NA i' ak,
NA
NA i|'(il,
NA
NA
1106
NA
NA 18,T
NA
NA
l'280|
261
591 1,512
32S
755i«jl
T22 89?
■M4
942
637
1.34S 1 '823
10
NA
NA ^7
NA
NA |\ m
NA
NA
,'i£)e
NA
NA ! 1B1,
NA
NA
'214
NA
NAl ^4
NA 278
392
531
907
, S04
749
1309 77.
IB
NA
NA !>&'
NA
NA i?
NA
NA
■ 87
NA
NA ' iSs'
NA
NA
198
NA
452
692 1 H72'
806
873
481
841
1272 1 7St
20
2
NA
NA r3S
NA
NA 1 hh
NA
N/V
'i8S
NA
NA [ i()0
163
520
273
206
675 ' 3V4
258
864 490
252
1079
525
508
1.544 951
1518 . M(
5
NA
naI'sS
NA
NA bV
NA
NA
iis
NA
NA 1 iftS
NA
NA
2i^2
255
655 1 348
317
842 , 461
433
1055
'594
623
10
NA
NA ' tJA
NA
NA [1* 59
nai'na
NA
NA
'not;
NA
NA 170
NA ISB
NA
NA
23,5
312
622 1 330
382
806 1 4?7
517
4016
I 562',
7.33
1475 ' ■S7E
1434 8.31:
1394 1 S'OC
15
NA
NA j I^A
NA
NA
NA
>
NA
NA
NA
lib
NA
NA 3U
442
773 , 41'*'
591
979
"■539
823
20
NA
NA ' NA.
NA
NA_,||lk
NA
NA
i,,'^"
NA
NA .•^■t5f
NA
NA
im
NA
NA [W^,?
NA
NA 1 392.'
863
944
'M
911
30
2
NA
NA [ '4l
NA
NA 1 '< 81'
NA
NA
1
' 136
NA
NA 1 255
158
578
302'
200
759 ' 4^0
249
982 . 556
.340
1237
'•'7,m,
489
1789 tut
5
NA
NA 'NiV
NA
NA 7B
NA
NA
1'27
NA
NA ' ItIO
NA
NA
279
245
737 J 391
306
958 I 524
417
1210
?'80
600
1760 j mm
10
NA
NA NA
NA
NAt '66
NA
NA
113
NA
NA 182
NA
NA
260
300
703 [ 370
370
920 1 496
600
1168
6<14
70S
1713 102(
1688 ' 97;
15
NA
NA NA
NA
NA 1 NA
NA
NA
105
NA
NA 168
NA
NA
240
NA
NA 349
428
884 471
572
1128
615
798
20
NA
NA NA
NA
NA \ NA
NA
NA
88
NA
NA [ 153
NA
NA
223
NA
NA 327
NA
NA ' 445
643
1089
686
883
1624 1 9.3;
30
NA
NA } nX
NA
NA[ NA
NA
NA
NA
NA
NA 1 NA
NA
NA
las
NA
NA i 281
NA
Na''40S
NA
NA
544
1053
1539 86E
30
2
NA
NA '' Nk
NA
na; 91
NA
NA
160
NA
NA j 230
NA
NA
350
191
837 [ 475
238
1103 Ijjl'
323
1408
,i)10
463
2076 ' 1241
2044 1221
5
NA
NA NA
NA
NA NA
NA
NA
1,49
NA
NA 1 gaa
NA
NA
S21
NA
NA 442
293
1078 [ 593,
398
1381
770,
571
10
NA
NA NA
NA
NA NA
NA
NA
136
NA
NA^2t^
NA
NA
fs
NA
NA[.'1^0
355
1038 ,562
447
1337
,728
674
1994 ' IWd
15
NA
NA , MA
NA
naTM'
NA
NA
'Hi
NA
NA 195
NA
NA
NA
NA ' 395
NA
NA , 583
546
1294
695
761
1945 1090
20
NA
NA f KA
NA
NA I^A
NA
NA
NA
NA
NA ,lSp
NA
NA
m
NA
NA [ 37q
NA ' 'm
NA
NA I S(),4
618
1251
060'
844
1898 i't04(
1806 '97t
30
NA
NA i i{^
NA
na [ NA
NA
NA
(iiA
NA
NA NA
NA
NA
NA
NA
NA
NA , 45a
NA
NA
1 610
1009
Minimum
12 f
10 1
28
33,
50
63 1
78 ll
93
.
132 '
internal area
1
of chimney
(in")
1
1
1
1
Maximum
•!9! ,
88
137
198
269
352 1 '
445 1
560
792'''
Internal area
1 ,
1
1 ,
,
'
ofchiiiiney
(in.'')
1
[
,
1
1
1 ,
For SI units, 1 in. = 25.4 mm, 1 ft = 0.305 m, 1000 Btu/hr = 0.293 kW, 1 in." = 645 mm".
[NFPA 54 Table 13.1 (d)]
88
WATER HEATERS
Table 5-12
Table 5-12 Single-Wall Metal Pipe or Type B Asbestos Cement Vent
Ntunber of Appliances:
Single
Appliance Type:
Draft Hood-Equipped
Appliance Vent Connection!
Connected Directly to Pipe or Vent
Diameter -D (in.)
Lateral
L
(ft)
To be used with cliimncy areas widiin Uie size limits at bottom
3
*
5
6
7
8
10
12
Height
H
(fl)
Appliance Input Rating in Thousands of Btu per Hour
Maximum Appliance Input Rating in Tliousands of Btu per Hour
1)
sa
70
116
170
232
312
500
750
2
31
55
94
141
194
260 ,
415
620
5
28
61
88
128
177
242
390
600
a
42
7fi
126
185
252
340
542
815
2
32
61
102
154
210
284
451
680
5
29
56
95
141
194
264
430
648
10
24
4:9
86
131
180
250
406
625
10
45
84
138
202
279
372
606
912
2
35
67
111
168
233
311
505
760
5
B2
61
104
153
215
289
480
724
10
27
54
94
143
200
274
455
700
15
NA
46
84
130
186
258
432
666
I.B
49
91
151
223
312
420
684
1040
2
39
72
122
186
260
350
570
865
5
35
67
110
170
240
326
640
825
10
30
58
103
158
223
308
514
795
IS
NA
50
93
144
207
291
488
760
20
NA
NA
82
132
195
273
466
726
20
53
101
163
252
342
470
770
1190
2
42
SO
136
210
286
392
641
990
5
3S
74
123
192
264
364
610
945
10
32
65
115
178
246
345
571
910
13
NA
55
104
163
228
326
550
870
20
NA
NA
91
14:9
214
306
625
832
30
56
108
183
275
384
529
878
1370
y
44
84
148
230
320
441
730
1140
5
NA
78
137
210
296
410
694
1080
10
NA
68
125
196
274
388
656
1050
IB
NA
NA
lis
177
2S8
366
625
1000
20
NA
NA
99
163
240
344
596
960
30
NA
NA
NA
NA
192
295
640
890
50
NA
120
210
310
443
590
980
1550
2
NA
95
171
260
370
4,92
820
1290
5
NA
NA
159
234
342
4.74
780
1230
10
NA
NA
146
221
318
456
730
1190
15
NA
NA
NA
200
292
407
705
1130
20
NA
NA
NA
185
276
384
670
1080
30
NA
NA
NA
NA
222
380
605
1010
For SI units, 1 in. = 25.4 mm, 1 ft = 0.305 m, 1000 Btu/lir = 0.293 kW. 1 in." = 645 mm".
[NFPA 54 Table 13.1(e)]
89
Table 5-13
2007 CALIFORNIA PLUMBING CODE
Table 5-13 Exterior Masonry Chimney
Number of Appliances:
Appliance Type:
Appliance Vent Connection:
Single
NAT
Type B Double-Wall Connector
SPECLVL USE: Minimum AUo^vabic Input Ratine^ of Spncc-Heating Appliance in Thousands of Blu per Hour
Vent Height
Internal Area of Chimney (in.^)
(ft)
12
19
28
38
50
63
78
113
5
Local 99%
winter design temperature: :
7'Foi
greater
8
10
15
NA
20
NA
NA
123
190
249
184
SO
NA
NA
NA
NA
NA
393
334
50
NA
NA
NA
NA
NA
NA
NA
579
6
68
^ocal 99% winter design temperature:
116 156
27°F to 36°F
180
212
266
8
82
127
167
187
214
263
10
51
97
141,
183
201
225
265
15
NA
NA
NA
NA
233
253
274
305
20
NA
NA
NA
NA
NA
307
330
362
30
NA
NA
NA
NA
NA
419
445
485
50
NA
NA
NA
NA
NA
NA
NA
763
6
NA
NA
NA
Local 99% winter design
NA
temperature:
NA
17°F to 26°F
215
259
349
8
NA
NA
NA
NA
197
226
264
352
10
NA
NA
NA
NA
214
245
278
358
15
NA
NA
NA
NA
NA
296
331
398
20
NA
NA
NA
NA
NA
352
3S7
457
30
NA
NA
NA
NA
NA
NA
507
581
50
NA
NA
NA
NA
NA
NA
NA
NA
6
NA
NA
NA
Local 99% winter design temperatttrc
NA NA
5°Ftol6»F
NA
NA
416
8
NA
NA
NA
NA
NA
NA
312
423
10
NA
NA
NA
NA
NA
289
331
430
15
NA
NA
NA
NA
NA
NA
393
485
20
NA
NA
NA
NA
NA
NA
450
547
30
NA
NA
NA
NA
NA
NA
NA
682
SO
NA
NA
NA
NA
NA
NA
NA
972
6
NA
NA
Local 99% winter design temperature:
NA NA NA
-lO'F
to4°F
NA
NA
484
8
NA
NA
NA
NA
NA
NA
NA
494
10
NA
NA
NA
NA
NA
NA
NA
513
15
NA
NA
NA
NA
NA
NA
NA
586
20
NA
NA
NA
NA
NA
NA
NA
650
30
NA
NA
NA
NA
NA
NA
NA
805
50
NA
NA
NA
NA
NA
NA
NA
1003
Local 99% winter design temperanire: -11"F or lower
Not recommended for any vent configurations
For SI units, 1 in. = 25.4 ram, 1 in." = 645 mm'-, 1 ft = 0.305 m, 1000 Btti per hr = 0.293 kW, °C = ("F - 32)/1.8.
Note: See Figure G.2.4 for a map showing local 99 percent winter design temperatures in tlie United States.
[NFFA 54 Table 13.1(f)]
90
WATER HEATERS
Table 5-14
Table 5-14 Type B Double-WaU Vent
Number of Appliances;
Two or More
Appliance T}']3e:
Category I
Appliance Vent Conneclion:
Tyiie B Double-Wall Connector
Vent Connector Capacity
Tj-pc B Do
able-Wall Vent and Connector Diaaneter —
-fl(in.)
3
4
5
6
7
8
9
10
Appliance Input Rating Limits in Tlioiisands of Btw per Hour
Height
H
Rise
R
(ft)
FAN
M
FAN
NAT
FAN
Sit'
FAN
NAT
FAN
NAT
FAN Nat
FAN
NAT
mm
FAN iiN^^Tl
Min
Min
Min
Min
Min
Min
Min
Max
-Max
mpm
(ft)
Max
Mfe
Max pAwT
Max •^.
Mav Max
Max ,;g|x?
Max
Max"
«in Max jSMt|s
B
1
22
3V
'*;S
35
6B fiM'
46
108 fii*
58
164klOil
77
225 ill
92
296
^0
109
376
237
128 466 Siiilpsi
2
23
41
m
37
w ;i?ii
48
121
-l§6l:
60
183 j 124
79
253 fifal^
95
333 1 1220
112
'124 um
131 526 ?|!^^5
3
24
44
■;-:??.
38
81 jS?;'
49
132
m^
62
199 lS<i
82
275 IJII
97
363 1 248
114
463
vm
134 575 !:;;gS(}
B
1
22
40
:S#
35
72 I'i'lS'
49
114
m
64
176
1P9,
84
243 llsi'
100
ua
ibn
118
408
138 507 'WM.
2
23
44
S>32?
36
80 '(^l
51
128
'•:»?
66
195
129'
86
2(59 'iM
103
15b
230
121
454
4ppi
141 564 f;:'.|5S
3
24
47
Is
37
87 i§§,
.53
139
iBi:.
67
210 '14BI
88
230 ?i|fc
105
384 1 2!3§
123
492
'im
143 612 f[;i|TO
10
1
22
43 ili
34
78 Hi
49
123 0§-
65
189 ]1S
89
257 «!|J3il,i
106
341 1 ^OO,
125
436
W
146 542||i:|
2
23
47
'm
36
86 :B|*!|i
51
13« 0i
67
206
13*
91
282 if f J
109
374 238
128
479
149 596 Ifi^
152 642 imi
S
24
50
37
92 |sl7f
52
146 ||||:
B9
220
MO
94
303 lilf
111
402 1 268
131
515
ii
15
1
21
50 >tfm
33
^m
47
142 Wi
64
220
i20
88
298 Up
320 EHi
110
389
^SH
134
493
lifl
162 ,609 |fl^
2
22
53
;i«!
35
^^m
49
153 Ifiis
66
235 :|42
91
112
419
^^3
137
532
nm
165 B58 fsiSt
3
24
55
mi
36
102 lij-g*
51
i63i;|i|,s
68
248
J 6b
93
339 ||i:|
1 15
445
28^
14.0
565
'Mk
167 700|||il
20
1
21
54
m
33
99 I'lfi
46
157 Mi
62
246
l^j'
86
334 lllll!
107
430 i 2^4 1
131
552 iSii
158 681
li|
2
22
57
'SlS^i
34
105 Jljig!
48
167 p8|
64
259 )J19
89
354 SSii^i
110
463 1 865 '
134
587
!ii'a39;j
IBl 725
i|pi
3
23
60
■iit
36
"ofei'iS
50
17B Sillll
66
271 1 l|i8
91
37)
iSS
lis
486 f m<)
137
618
mk
164 764
iM
30
1
20
02
Iss'
31
1 13 jii|ffij
45
S-'illiiliS!':
181 tij'lia;'
BO
288 ' 134
83
391
iii
103
512|'23fe
125
649
".■!■;' ih'lT'''l::'l''
fsaos,]
151 802 |i:v:^|2
2
21
64
m
33
118|i'f&
47
190 [;|iD;
62
299 158|
85
408 iiSiS*
105
535
m2
129
679
m\
155 840
ISfiS
3
22
66
<f&'
34
123
:«
48
198 ii^;
64
309 1 178
88
*23 ||Sj
108
555
31?
132
706
158 874
s^:;ii
50
1
Ifl
71
'sil
30
133
III
43
216
ii
57
349 ' 145
78
4W f^{
97
627 > ?5l7
120
797
w&
144 984
teiSs
9
21
73
*m-i
32
137
■S?Sv
45
223
a«ft
59
358 172
81
4flo iii
100
645 1 306
123
820
iti|2t
148 1014
V0^
3
22
75
pM
33
i« 6iS
46
229
«M
61
366 , 194
S3
S02 iii
108
661 t U%
126
842
ami
151 1043
4m
100
1
18
82
St
28
158 IHi
40
262 giSii
53
442 ' 150
73
611 *slbi
91
SIO 266
112
1038
iS|t
135 1285
i"ii|
2
19
83 :-5pi
30
161 ii?;79'
42
267 iflS::
55
447 178
75
619 fliia;
94
822 3^6
115
1054
■mos^
139 1306 1^0i
3
20
84 "isSb;"
31
lesjilf
44
272 pSi
57
452 i 200
78
627 ii'lllf
97
834 355
118
1069 fl'Sf f
142 1327 iJ^S^
Common Vent Capacity
Type B Double-Wall Common Vent Diameter — X> (in.)
4
5
6
7
8
9
10
Vent
Heiglit
B
Combined Appliance Input Ra6ng in Tliousands of Btu per Hour
FAN
FAN
ISjatI
FAN
FAN
■imi
FAN FAN 'allail^
FAN
FAN
NAT
FAN FAN I'siijl
+FAN +NAT ifl¥3Sli!
■ J^!'*'i'i:IW:i;*in;
FAN
FAN NAT
FAN
FAN
liari
(ft)
+FAN
+NAT
blATj
+FAN +\AT
+FAN +NAT Hilpli
+FAN
+NAT
+NAT
+FAN +NAT IgU;
+FAN
+NAT
§M$i
B
92
81
mm
140
116
IIP
204 161 mtlfi}
309
248 iiip
404 314 Siilft
444 348 PpHtp
547
i3i lill
672
520
Slii
8
101
90
£«■
155
129
pWsf^
224 178 Mijils:
339
275 i!|Sfift
602
480 msm
740
577
*SgjS':i
10
110
97
*s?H
169
141
m0p
243 194 |;p;Sl
367
299 pisif
477 377 iHiSf
649
522 #ii
800
627
'i^fflte;:.!
15
125
112
'■W>i
195
164
mt
283 228 'ife*
427
3S2 lip^'i;
556 444 fllliSS.
753
612
■!^K
924
733
:si56i:;'.|
20
136
123
•imi<
215
183
iteoi*:*
314 255 jii&S
475
394 iliJISI
621 499 mlif¥\
842
688
■sSli>'i'
1035
826
'$^0
30
152
138
Msi
244
210
isl;.!*'
361 297 :f6S>:;i
547
459 jlbbri;
720 585 V^fimi:
979
808
!«
1209
975
#;ll:,i:;1
50
167
153
m?
279
244
;2iii:!'v
421 353 i|i:fi,;it-
641
547 ;l2S*i':,:
854 706
mm-
1164
977
'7tfelH"
1451
1 188
sfiBo's;?:^
100
175
l(j3
init§
311
277
:;SI':,::-:;!
489 421 'i'fSt:;':
751
658- WH'.
1025 873
iiplj;:'
14,08
1215
ESbqi,;!;
1784:
1502
:'87fe :!;!:■•;
[NFI'A54 Table 13.2(a)]
91
Table 5-14 continued
2007 CALIFORNIA PLUMBING CODE
Table 5-14 Continued
Connector
Rise
R
(ft)
Number of Apph
ances:
Two
3r More
Appliance
Tj^e:
Category I
Appliance Vent Connection;
Type
B Double-WaU Connector
Type
B Double-Wall Vent and Connector Diameter — D (in
•)
12
14
16
18
20
22
24
Vent
Height
Appliance Input Rating Limits in Thousands c
fBtu per Hour
FAN ,NAT
FAN
NAT"
Max
FAN jNAT
FAN NAT
FAN
NAT
Max
FAN I'NAT
FAN 1 NAT
(ft)
Min
Max Max,
Min
Max
Min
Max 1 IVIax
Min Max | Max
Min
Max
Min
Max j Max
Min
Max IV^ax
6
2
4
6
174
180
NA
764] 496
897 616
NA^ NA
223
230
NA
1046
1231
NA
653
827
NA
281
287
NA
1371 i 85S'i
1617 '1081
NA , l^A
346 1772 108(i
352 2069 1370
NA NA NA
NA
NA
NA
NA 1 NA
NA. NA
NA ,NA
NA
NA
NA
NA NA
NAl NA
NA' NA
NA
NA
NA
NA 1 M
NA , N/\
NA NA
8
2
4
6
186
192
198
822 ' 516
952 1 544
1 050 1, 779 1
238
244
252
1126
1307
1445
696
884
1072
298
305
313
1478 ' 910
1719 1150
1902 1390
365 1920 11150
372 2211 ' 1460
380 2434 1770
NA
471
478
NA NA
2737 [1800
3018 1 2180
NA
560
568
NA NA
3319 12180
3665,2640
NA
662
669
NA l^A
3957 259C
4373 3130
10
2
4
6
196
201
207
870 ,,536
997' 664
1095 [ 792
249
256
263
1195
1371
1509
730
924
1,118
311
318
325
1570 1 955
1804 1 1205
1989rlf^S3
379 2049 ' 1205
387 2332 1 1635
395 2556 '1865
NA
486
494
NAI NA
2887 ' 1890
3169 1 2290,
NA
581
589
NA ' NA
3502 1 228P
3849 1 2760
NA
686
694
NA NA
4175 . 271C
4593 327C
15
2
4
6
214
221
228
967 568
1085 1 712
1181 1,856
272
279
286
1334
1499
1632
I'OO?
1222
335
344
351
1760 'i'03t)
1978 1 1320
2157 • 1610
408 2317 ,'130'5'
416 2579 'l'665
424 2796 2025
NA
523
533
NA NA
3197 2060
3470 2510
NA
624
634
NAi NA
3881 '2490
4216 1 3030
NA
734
743
NA W
4631 29SC
5035 1 360C
20
2
4
6
223
230
237
1051 59S
1162 748
1253 '900
291
298
307
1443
1597
1726
,' 840
1064
1288
357
365
373
1911 ,,1085
2116^1395
2287 '1695
430 2533 'iSSs'
438 2778 1765
450 2984 '2145
NA
554
567
NA NA
3447 2180
3708 2650
NA
661
671
NA_ NA
4190 2630
4511 Sl'90
NA
772
785
NA NA
5005 1 813C
5392 379C
30
9
4
6
216
223
231
1217 , B32
1315 792
1400 ' 952
286
294
303
1664
1802
1920
•'■PIO
1160
1410
357
376
384
2183 tHk
2366 1510
2524,1630
461 2891 1540]
474 3110 11920
485 3299 ^2340
NA
619
632
NA ,IsrA
3840 2365
4080 [2875
NA
728
741
NA N.'^
4861 12860
4976 13480
NA
847
860
NA NA
5606 .3410
5961 415C
50
2
4
6
206
213
221
1479 689
1561 860
1631 1 1031
273
281
290
2023
2139
2242
1007
1291
1573
350
359
369
2659 1315
2814 1685
2951 12055
435 3548' 1665
4^17 3730 2135
461 3893,2605
NA
580
594
NAI NA
4601 12633
4808 13203
NA
709
724
NA NA
5569 3185
5826 ,3885
NA
851
867
NA 1 NA
6633 1 379C
6943 462C
100
2
4
6
192
200
208
1923 1 712,
1984 1 , 888
2035 , 1064,
254
263
272
2644
2731
2811
1050
1346
1642
326
336
346
3490 1 1370
3606 1 1760
3714,^150
402 4707 1740
414 4842 '2220
426 4968 2700
NA
523
539
NA| NA
5982 2750
6143 :3350,
NA
639
654
NA NA
7254 |3S30
7453 4070
NA
769
786
NA' m
8660 1 ,895C
8892 ,48 1 C
Common Vent Capacity
Type B Double-Wall Common Vent Diameter — D (in. )
12
14
16
18
20
22
24
Vent
Combined Appliance Input Rating in Thousands of Btu
per Hour
H
FAN
FAN INAT
FAN
FAN
NAT
FAN FAN [ NAT,
FAN
FAN 'mi!
FAN
FAN
ISIAT
FAN FAN NAT
FAN
FAN
NAT
(ft)
+FAN
+NAT +NAT
+FAN +NAT
+NAT
+FAN +NAT +NAT,'
+FAN
+NAT +NAT
fFAN +NAT
■fNAT
+FAN +NAT +NAT
+FAN
+NAT
+SrAT
6
900
696 1 , 588
1284
990
1 'm,
1735 1336 1 }(0te
2253
1732 1345
2838
2180
1680
3488 2677 ' 1970
4206
3226
239C
8
994
773 652.
1423
1103
|'912
1927 1491 niSO
2507
1936 1610
3162
2439
1860
3890 2998 2200
4695
3616
268C
10
1076
841 I 712
1542
1200
995
2093 1625 ' liJOO,
2727
2113 1845,
3444
2665
1 203Q
4241 3278 '2400'
5123
3957'
292Q
15
1247
986 [ 825
1794
1410
ll58
2440 1910 15,1,0
3184
2484 jaio,
4025
3133
,2360
4971 3862 ■ 2790.
6016
4670
340C
, 3800
20
1405
1116 916
2006
1588
la'g'o
2722 2147 1690
3561
2798 ' 2140
4548
3552
2640
5573 4352 ,,3120'
6749
5261 1
30
1658
1327 1025
2373
1892
15^
3220 2558 iflSO
4197
3326 2520
5303
4193
'8110
6539 5157 ',3680
7940
6247
4480
'' 547S
50
2024
1640 ,1280
2911
2347
1863
3964 3183 ' 2430
5184
4149 i3()75
6567
5240
3800
8116 6458 4S00
9837
7813
100
2569
2131 l'670
3732
3076
2flo0
5125 4202 '3200,
6749
5509 -4050
8597
6986
5000
10,681 8648 , 5920
13,004
10,499 '
7200
1
For SI units, 1 in. = 25.4 ram, 1 in.- = 645 mm-, 1 ft = 0.305 m, 1000 Btu per hr = 0.293 kW.
[NFPA 54 Table 1.3.2(a)]
92
WATER HEATERS
Table 5-15
Table 5-15 Type B Double-WaU Vent
Number of Appliances:
TS\'o or More
Appliance Type:
Category I
Appliance Vent Connection:
Single-Wall Metal Connector
Vent Connector Capacit}'
Single-Wiill Metal Vent Connector Diameter — D (
n.)
3
4
5
G
7
8
9
10
VenC
ApplnncL Input Rating Limits in Tliousands of Btu per Hour
Height
Rise
R
(ft)
FAN
n
i^
TAN NAT
FAN
nit;
FAN
3
FAN
NAT*
FAN
U^AIl
FAN
NAT
FAN
fjAT
(ft)
Min
Max
Min Max "Max"
Mm
Max
Mm
Max
Mm
Max
Mm
Max
Min
Max
Max-
Min
Max
6
1
NA
NA
'1
NA
NA
m
NA
NA \k\i)
NA
^'^ W!
207
223
A'
262
293
325
373 \ «84
447
463
m
2
NA
NA
NA
NA
NA
NA life
168
182 m
215
251
'4
271
331
334
422
I^Sli
458
524
3
NA
NA
NA
NA
m\
121
131 |195'
175
198 flipbf
222
273
279
361
l^iv
344
462
?M
468
574
8
■ 1
NA
NA
%k
NA
NA
3
NA
NA l/p^i
NA
NA joll
226
240
'41'
285
316
^i^it
352
403
m
481
502
2
NA
NA
fell
NA
NA
m
125
126 i\m
184
193 ll^V
234
266
m
293
353
1228
360
450
2^1
492
560
3
NA
NA
^ff
NA
NA
130
138
m
191
208 }P!
241
287
m
302
381
s?b
370
489
f28
501
609
10
1
NA
NA
#1
NA
NA % '
119
121
^
182
186 il|'ot|
240
253
ii'l
J02
335
ll??'
372
429 Ibg'
506
534
m&S
2
NA
NA
84
S'5 I69ji
''1 m
124
134
189
203 isi
248
278
l\8S
311
869
381
473 1^021
517
589
m
S
NA
NA
89
129
144
197
217 )l|8ti
257
299
^03^
320
398
m
391
511 ^39,1
52S
637
i4m
IB
1
NA
NA
h^l
71}
87 \m
94 fte*
100 f;o \
116
138
fM\
177
214
iti?"^
238
291
Mil
312
380
iol
397
482 '^kt
551)
596
mi
2
NA
NA
isfi
S%
I'l
ISO
'^7
185
230
M
246
314
*
321
411
m
407
522 iM
537 i?oq
568
646
iM&t
3
NA
NA
m]
87
127
160
w^
193
243
iiV
255
333
331
438
w
4J8
579
690
Us&i
20
1
49
56
Uojji
,5J*
78
97
115
152
"§
175
238
%i°
233
325
"i?fh
306
425
I2^
390
538
M
546
664
ff?
2
52
m
82
103
120
163
182
252
m
243
346
317
453
400
574
II
558
709
3
55
62
87
107
m
12S
172
190
264
252
363
ml
326
476
pgj
412
607
570
750
30
1
47
60
l>.lll
77
110
¥\
112
175
iiM
169
278
M
226
380
m
296
497
kkp
378
630
H
528
779
Iffl
2
51
62
'ii
81
115
m
117
185 \mi
177
290
il^2
236
397
2ff?
307
521
&ii
389
662
541
819
te^l
S
54
64
81
119
m
122
193
m\\
185
300
^n
244
412
'2?ri
«6
542
i°?
400
690
555
855
jSa
50
. 1
46
69
¥i
75
128
109
207
iiW
162
338
^1
217
460
.4)
284
604
fk^
•154
768
Uf-t
507
951
J3si
2
3
49
52
71
72
4'
79
83
132
136
114
119
215
221
!li)3
liai
170
178
345
353
226
235
473
486
II
294
304
623
640
sail,
376
387
793
816
520 983
535 1013
S
100
1
45
79
341
71
150
l6ll
104
249
I9i|
153
424 i&'
205
585
^iM
269
774
u,
345
993 12*1
476 1236 &33
2
48
80
i4'l
75
153
110
255
11^1
160
428 fpb^j
433 {|l9(jS
212
593
,2281
279
788
m
358
1011 W
490
259 [46"^
3
51
81
VV
79
157
111
260 jl20()
168
222
603
k^?f
289
801
l^te,
368
1027 ^3f,
506 1280 liBfl
Common Vent Capacity
Type B Double-Wall Vent Diameter — fl (in.)
4
B
6
7
8
9
10
Vent
C
ombined Appliance In
put Rating in Thousands of Btu per Hour
H
(ft)
FAN
+FAN
FAN
+NAT
UWii
FAN
fFAN
FAN
+NAT
IjNAtr,
+mT|
FAN FAN
+rAN +NAT
I^^Tl
FAN FAN
+FAN +NAT
HI
FAN FAN sjiksr)
^FAN+NAT +J\rkir
FAN
HAN
FAN j NATi
+NAT |j«AT
FAN 'FAN WaVI
(■FAN +NAT -t^fATl
6
NA
78
"|1'64
NA
113
(¥.
200
158 fi^
173 "i 459
189 "«l
304 244
1
ft
398
1. in 11
310 1 12571
342 B 1I2SBJ
369 \ 'fpm
541
429 iSS»|>^'
665 515
V47
8
10
NA
NA
87
94
if l'*71
NA
163
126
137
m
218
237
331 269
3B7 292
436
467
592
638
473
512
IE
730 669
787 617
l46p
1 11*87
15
121
108
, ^f?
189
159
1 140
275
221
i'lf°,
415 343
'^4
544
434 1 1357
7«
699
V^BI?
905 718
,553
20
131
118
' ii n
208
177
I'wb
305
247
463 383
M
606
824
673
1 'S^
1013 80S
li 11626
30
145
132
1 )??!
236
202 ' 1 J80
350
286
^b'7 I
533 446
W
703
B70 t 1 459
686,1 ^k
846 p 1 6()[j
958
790
1183 952
7^3
50
159
145
268
233 208,
406
337
296
622 B29
ii^io
„i64
833
1139
954
'iW9
1 (780
1418 1157
1 833
100
166
153
'M^
297
263 1' |NfA'
469
398
iNAl
726 633
999
1378
1185
1741 1459
1 9^8
[NFPA54 Table 13.2(b)]
93
Table 5-16
2007 CALIFORNIA PLUMBING CODE
Table 5-16 Masonry Chimney
Numbei* of Appliances:
Appliance Type:
Appliance Vent Connection:
Two or More
Category I
Type B Double-Wall Connector
Vent Connector Capacity
Connector
Rise
R
(ft)
Type B Double-Wall Vent Connector Diamctei
-0(in.)
3
4
5
6
7
8
9
10
Vent
Height
Appliance Input Rating Limits
in Thousands of Btu per Hour
FAN
NAT
Max
FAN
NAT,
Max
FAN
NAT,
FAN
NAT
Max
FAN
NAT
Max
FAN
NAT
Max
FAN
NAT
Max
FAN
NAT
(ft)
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Mn
Min
Max
Min
Max
Max
6
1
24
33
21
39
62
40
52
106
'57
65
194
lOT
87
274
141
104
370
201
124
479
253
145
599
Sid
378
2
26
43
28
41
79
62
53
133
85
67
230
124
89
324
178
107
436
232
127
562
SOQ
148
694
S
27
49
34
42
92
61
55
155
97
69
262
1^3
91
369
203
109
491
2'70
129
633
349
151
795
43^
8
1
24
39
22
39
72
41
55
117
b9.
71
213
105
94
304
1,48
113
414
210
134
539
267
155
682
33^
2
26
47
29
40
87
53
57
140
86'
73
246
127
97
350
179
116
473
240
137
615
311
160
776
39'l
3
27
52
34
42
97
62
59
159
S)8
75
269
145
99
383
206
119
517
276
139
672
358
163
848
452
10
1
24
42
??
38
80
42
55
130
71
74
232
108
129
101
324
IS3
120
4't4
216
142
582
277
165
739
■ 34^
2
26
50
.29
40
93
84
57
153
'87
76
261
103
365
184
123
498
247
145
652
321
168
325
m
3
27
55
35
41
105
63
58
i70ia6o
78
234
,148
106
397
,209
126
540
2S1
147
705
'365
171
893
46^
15
1
24
48
23
38
93
44
54
154
14
72
277
U4
100
384
164
125
511
,229
153
658
',297
184
824
375
2
25
55
31
39
105
55
55
174
89
74
299
134'
103
419
192
128
558
260
156
718
339
187
900
432
3
26
59
35
41
115
64
57
189
102
76
319
1S3
105
448
215
131
597
292
159
760
332
190
960
488
20
1
24
52
24,
37
102
4ff
53
172
n
71
313
119
98
437
^73
123
584
239'
150
752
342
180
943
397
9
25
58
31
39
114
•56
55
190
91
73
335
138
101
467
199'
126
625
Vf>
153
805
354
184
1011
•152'
60!^
3
26
63
35
40
123
66
57
204
IM
75
353
157'
104
493
22*2
129
661
301
156
851
396
187
1067
30
1
24
54
25
37
111
48
52
192
82
69
357
',127-
95
504
.wt
119
680
265
145
883
337
175
1115
43^
9
25
60
32
38
122
58
54
208
95
72
376
,145
99
531
209
122
715
2S7
149
928
378
179
1171
484!
3
26
64
36
40
131
65
55
221
107
74
392
163
101
554
233
125
745
317
152
968
418
182
1220
535
50
1
23
51
25
36
116
61
51
209
89
67
405
143
92
582
213
115
798
294
140
1049
392
168
1334
Boe
9
24
59
32
37
127
61
53
225
102
70
421
161
95
604
235
118
827
326
143
1085
433
172
1379
558
6111
3
26
64
36
39
135
69
55
237
115
72
435
180
98
624
260
121
854
357
147
1118
474
176
1421
100
1
23
46
24
35
108
50
49
208
S2
65
428
155
88
640
237
109
907
834
134
1222
454
161
1589
59^
2
24
53
'si
37
120
6,0
51
224
,1-fi5
67
444
,174
92
650
260
113
933
368
138
1253
497.
165
1626
'65i
70S
•''
25
59
35
38
130
68
53
237
US
69
458
193
94
679
285
116
956
399
141
1282
540
169
1661
Common Vent Capad^
.=>)
12
19
28
38 1
50
63
78
113
Vent
Combined Appliance Input Rating in Thousands of Btu per Hour
H
(ft)
FAN
fFANH
FAN
hNATi
NAT
NAT,
FAN
^FAN■^
FAN
NAT 4
NAT
NAT
FAN FAN 'NAT
hFAN+NAT-i-I^tAT
FAN FAN NAT
l-FAN+NAT+NAT
FAN FAN NA'^
[•FAN+NAT+NAT
FAN
^FAN^
FAN NAT
NAT+NAT
FAN FAnInAX
hFAN+NATfl^rAT
FAN FAN
hFAN +FAN
nat|
H-FfATj
5
8
10
15
NA
NA
NA
NA
74
SO
84
NA
25
28
31
36
NA
NA
NA
NA
119
130
138
152
46
53-
65
67
NA
NA
NA
NA
178 ( 71
193 82
207 ! 90
233 106
NA 257 103
NA 279 ' 4,19
NA 299.,131'i
NA 334 1,, 152
NA 351 , 143
NA 384' 153
NA 409 . 174
523 4671 212
NA
NA
605
682
458 , 188
501 1 '218
538 ,236
611 1 283
NA 582 246
724 636 1 278
776 686 302
874 781 , 3*65
1041 853
11*1 937
1226 1010
1374 1156
N^
40^
■ 45'!
. 5<iq
20
30
50
100
NA
NA
NA
NA
NA
NA
NA
NA
41
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
m
75
NA
nA,
NA
NA
NA
NA
NA
250, 122
270, 137'
NA j NA
NA NA
NA 368,' 172,
NA 404 !', igs;
NA NA NA
NA NA 1 NA,,
565 508 •2;'1S
615 564 278
NA 620 ' 32^
NA NA 1 348
742
816
879
NA
668 ,325
747! SSr
831 . 461
NA[ 499
955 858 "119
1052 959 1 496.
1165 1089 606
NA NA 1 ,669
1513 1286
1702 1473
1905 1692
2053 1921
\ mi
'74d
02**
I05S1
[NFPA 54 Table 13.2(c)]
94
WATER HEATERS
Table 5-17
Table 5-17 Masonry Chimney
Number of Appliances:
Appliance Type:
Appliance Vent Connection:
Two or More
Categoiy I
Single-Wall Metal Connector
Vent Connector Capacily
Single-Wall Metal Vent Connector Diameter — D (
n.)
3
4
5
6
1
8
9
10
Appliance Input Rating Limits in Tniousinds of Btu per Hour
Height
Rise
R
(ft)
FA^
NAT
FAN
NAT
Mai.
FAN
natI
FAN
i>IAT
■Mai
FAN
^k
FAN
NAT
Max
FAN '^/t,
FAN Wat
(ft)
Min
Maj.
Min
Max
Min
Max
f^
Mm
Max
Min
Max
^1
Min
Max
Mm
Max
mi|
Min
Max
^
6
1
NA
NA
',l,^^il
NA
NA l')tep
NA 1 bSi
NA
NA
i«i
179
"1 IJ>!*
231
271
%<>^
292
366 2ol)|
432 2^11
362
474
11
499
594
M
2
NA
NA
w
NA
NA
NA
m
18b
227 JlK
239
321
\mi
301
373
557
509
696
ill
3
NA
NA
¥\
NA
NA [|('l6!||l
134
KiS
\¥
Mi
268 I^R
247
365||^()^l
309
491 2^^
•581
634
iblS
519
793
8
1
NA
NA
•^fi
NA
NAl'l'^O
NA
NA
h\\
195
208 'lllOS
240 Ml
250
29S
hW
313
407
'^07
387
530
3091
529
672
)?3)l
2
NA
NA
1
28 i
NA
NA
w^
137
139
ifffi
202
258
343
W\
323
465
,23^1
397
607
540
76b
391
3
NA
NA >Jm
NA
NA
(6^
143
156
210
264 ijll^S
266
37b
"2W
332
509
1.^4
407
663 N^|6'
551
838
i?o
10
1.
NA
NA il22[
NA
NA
Uvi
130
151
k
202
225 \io^i
267
358 t|i'
333
434 ili^'l^
410
571 Iil^rai
558
727
rt03
%9
2
NA
NA ^h
NA
NA Ills
136
150
||99
210
265
r»7i
276
343
489
AM\
420
640
a
569
813
3
NA
NA;i«k
97
102 1 1^2
HS
166
217
277
284
389
w
352
530
'm^
430
694
580
880
IB
1
NA
NA
|3fl
NA
NA
ijfi*
129
1^)1
199
271
"-itiV'
268
376
]m\
349
502
iiSa
445
646 '&
623
808
fee
tf79
2
3
NA
NA
NA
NA
92
96
103
112
III
135
141
170
185
207
215
295
315
277
286
411
439
ill'
359
368
548
586
#
456
166
706 'i&si
753 3M
634
646
884
945
20
1
NA
NA
I'tbi
87
99
*h
128
167
U^
197
303
itaj?!
265
125 1 1169 1
315
569
t&
439
734
feSp'i
614
921
3^7
m
2
NA
NA Hl&l
91
in nijf
134
185
'"?'
205
325
IbL
274
455
m
355
610
450
787
i'S^'l
627
986
3
NA
NA i IISB
96
U'l l| ^4|
140
199
iJ'o?
213
343 [l!^4
282
481
12J/
365
644
1^99'
4b 1
831
m
639 1042 |l|l4fl6
30
1
NA
f^A jih
86
108 ^h"?!
126
187
1*0
J 93
347 l^lik
259
492
,'iiirf
338
665
112^0
430
864
m
600
1089
ti
2
NA
NA f tf
91
119
ff
132
203
mt
201
366 IJ42I
381 lOQl
269
518
¥
348
899
|282l
442
908
'tei
613
1145
3
NA
NA| ,35
95
127
138
216
209
277
540
^39'
358
729
452
946
'A^l
626
1193 t|5^4
50
1
9
NA
NA
NA 1 sr
85
89
113
123
f%
124
130
201
218
188
196
392
408
252
262
567 20s
588 1286,
328
339
778
806
5287'
I32M
417
429
1022
1058
fa
582
596
1302 Mas
1346 15^5
3
NA
NA t" ,3Bl
94
131
136
231
]p
205
422
271
607 |l255'
349
831 ,S51p
440
1090 iWsl
610
138b [,597
100
1
NA
NA ll(b
84
104 ''M
122
200
t«9'
182
410
151
243
617
^32
315
875
328l
402
1210 |?I^B'i
560
1537 WA
2
NA
NA ,80
88
115 y
127
215
Jiy2i
190
425
^W
253
63b
254,
326
899
m
415
575
1570 MS4
3
NA
NA t^4|
93
124 |t67i)
133
J28
iiii^i
199
438 Iij88l
262
654
m
317
921
m
427
^^^« 0t
589
1604 1,6^7
Common Vent Capacity
Minimum Internal Area of Masonry Chimney Flue (in
■')
12
19
28
38
50
63
78
113
Vent
Combined Appliance Input Rating in Thouiiands of Btu per Hour
H
FAN
5^
FAN
FAN
NAT
FAN
FAN iNiT
FAN
FAN
i^lz'
FAN
FAN
Wati]
FAN
FAN NAT
FAN FAN 'TSUfJ]
FAN FAN |NAT
(ft)
hFAN-
hFAN+NAT
m
hFAN+NATl^Atl],
l-FAN+NAT
S^ir
hFAN+NAT
i-FAN+NAT|i^ATi
l-FAN+NAT IWt
hFAN +FAN |l|l^Jur
6
NA
N^ ' #,i
NA
118
|$^
NA
"^'iiiM'
NA
255
iti
NA
348
lAii
NA
455 (^§171
NA 579
'kih^
NA 846 ' ''if't^k.
8
NA
^^-m
NA
128
iM
NA
190 i|f
NA
276
nw
NA
380
[y
NA
^^"^ -}?i'
NA 633
a
1 136 928
fjm
10
NA
NA m
NA
136 1 ifce
NA
205 lliTj
NA
295
m
NA
405
l!|7s
NA
532 »^3|
771 680
1216 1000
'♦1 4fe0
15
NA
NA
H
NA
NA
„fW
NA
230 lli^l
NA
335
1 160
NA
400
•A
677
602 i|'9S0
866 772
3(}0
1359 1139
540
20
NA
NA
NA
NA
'^
NA
2*7 \%
NA |ImB
NA
362 m
398 ,1^5
NA
503
765
661 P 1^211
947 849 j 415
1495 1264
1 P4P
30
NA
NA
H
NA
NA
NA
NA
NA
558
275'
80S
789 I|l377|
1052 957
430
lfaa2 1447
|I,740
50
NA
NA
NA
NA
^Al
NA
NA ,[kA
NA
NA 'liW
NA
612
S2611
NA
821 456,
1152 1076
600 1
1879 1672
1910
100
NA
NA
w
NA
NA
'M
NA
NA 1 ?^A
NA
NA llJA
NA
NA
ina'
NA
NA l'49i
NA NA
|663
2006 1885 1 1046
For SI units, 1 in. = 25.4 mm, 1 in.- = 645 mm^ 1 ft = 0.30.5 m, 1000 Btu per hr = 29^ W
[N1?PAS4 Table 1.3,2(d)]
95
Table 5-1 8 -Table 5-1 9
2007 CALIFORNIA PLUMBING CODE
Table 5-18 Single-Wall Metal Pipe or Type B Asbestos Cement Vent
Number of Appliances:
Appliance Type:
Appliance Vent Connection:
Two or More
Draft Hood-Equipped
Direct to Pipe or Vent
Vent Connector Capacity^
Total Vent Height
H
(ft)
Connector
Rise
R
(ft)
Vent Connector Diameter — D (in.)
Maximum Appliance Input Rating in Thousands of Btu per Horn-
6-8
21
28
34
40
53
61
68
86
98
102
124
147
146
178
204
205
235
275
1
2S
44
77
117
179
240
15
2
30
55
92
134
194
265
3
35
64
102
155
216
298
1
25
49
84
129
190
270
30
2
31
58
97
145
211
296
and lip
3
36
68
107
164
232
321
Common Vent
Capacity
Common Vent Diameter — D (in.)
10
Total Vent
H
(ft)
Height
Combined Appli ance Input Rating in Thousands of
Btu per Hour
6
48
78
111
155
205
320
NA
8
55
89
128
175
234
365
505
10
59
95
136
190
250
395
560
15
71
115
168
228
305
480
690
20
80
129
186
260
3^10
550
790
30
NA
147
215
300
400
650
940
50
NA
NA
NA
360
490
810
1190
For SI units, 1 in. = 25.4 mm, 1 in." = 645 mm", 1 ft = 0.305 m, 1000 Btu per hr = 0.29,S kW.
Note: See Figure G.l(f) and Section 13.2.
[NFPA 54 Table 13.2(e)]
Table 5-19 Exterior Masonry Chimney
Nimifaer of Appliances:
Appliance l^e;
Appliance Vent Connectibn:
Two or More
Type B Double-Wall
Connector
SPECIAL USE:
Combined Appliance
Maximum Input Rating in
Thousands of Btu per
Hom-
Vent
Hei^t
Internal Area of
Chimiiey (in
■")
H
(ft)
12
19
28
38
50
es
78
U3
6
25
46
71
lOS
143
13S
246
NA
8
28
53
82
119
163
218
278
408
10
31
56
90
131
177
236
302
454
15
NA
67
106
152
212
283
365
546
20
NA
NA
NA
NA
NA
325
419
648
30
NA
NA
NA
NA
NA
NA
496
749
50
NA
NA
NA
NA
NA
NA
NA
922
100
NA
NA
NA
NA
NA
NA
NA
NA
For SI units, 1 in. = 25.4 mm, 1 in.'^ = 645 mm''^, 1 ft = 0.305 m, 1000 Btu per hr = 0.293 kW.
[NFPA 54 Table 13.2(f)]
96
WATER HEATERS
Table 5-20
V,
Table 5-20 Exterior Masonry Chimney
Number of Appliances:
Two or More
Appliance Type:
NAT + NAT
Appliance Vent Connection:
Type B Double-Wall
Connector
snc]\i L"5i
Mnnininn \11oh iblc Input Kilini, ul Sp ii e Hi
itnic; \pplnni i ji
J lious mds ol Km
ptr Jloin
Vent
Height
Internal Area of Cliinmey (in.^)
B
(ft)
12
19
28
38
50
63
78
113
Local 99% winter design temperature: .
W'F or greater
6
NA
8
10
15
NA
20
NA
NA
NA
NA
NA
184
30
NA
NA
NA
NA
NA
393
334
50
NA
NA
NA
NA
NA
NA
NA
579
100
NA
NA
NA
NA
NA
NA
NA
NA
Local 99%
wnter design temperature
27°F to 36°F
6
68
NA
NA
180
212
NA
8
82
NA
NA
187
214
263
10
51
NA
NA
NA
201
225
265
IS
NA
NA
NA
NA
NA
253
274
305
20
NA
NA
NA
NA
NA
307
330
362
30
NA
NA
NA
NA
NA
NA
445
485
50
NA
NA
NA
NA
NA
NA
NA
763
100
NA
NA
NA
NA
NA
NA
NA
NA
Local 99%
winter design temperature:
n-F
to 26°F
6
NA
NA
NA
NA
NA
NA
NA
NA
8
NA
NA
NA
NA
NA
NA
264
352
10
NA
NA
NA
NA
NA
NA
278
358
15
NA
NA
NA
NA
NA
NA
331
398
20
NA
NA
NA
NA
NA
NA
387
457
30
NA
NA
NA
NA
NA
NA
NA
581
50
NA.
NA
NA
NA
NA
NA
NA
862
100
NA
NA
NA
NA
NA
NA
NA
NA
Local 99%
winter design temperature
•5°F
to 1 6°F
6
NA
NA
NA
NA
NA
NA
NA
NA
8
NA
NA
NA
NA
NA
NA
NA
NA
10
NA
NA
NA
NA
NA
NA
NA
430
15
NA
NA
NA
NA
NA
NA
NA
485
20
NA
NA
NA
NA
NA
NA
NA
547
30
NA
NA
NA
NA
NA
NA
NA
682
50
NA
NA
NA
NA
NA
NA
NA
NA
100
NA
NA
NA
NA
NA
NA
NA
NA
Local 99% wnter design temperature:
4''F or lower
Not recommended for
any vent configurations
For SI units, 1 in. = 25.4 mm, 1 in.= = 645 mm^ 1 ft = 0.305 m, 1000 Btu per hr = 0.293 kW, °C = ("F- 32)/1.8.
Note: See Figure G.2.4 for a map sliowng local 99 percent winter design temperatures in the United States.
[NFPA 54 Table 13.2(g)]
97
Table 5-21
2007 CALIFORNIA PLUMBING CODE
Table 5-21 Exterior Masonry Chimney
Number of Appliances:
Appliance T)fpe:
Appliance Vent Connection:
Two or More
FAN + NAT
Type B Double-Wall
Connector
MM.n \i
IM:(
onthiiifd Appliance
Maximum Inpul
Rating in Thcusaiuls of Btu per Hour
' 1
Vent
Height
Internal Area of Chinmey (in.")
H
(ft)
12
19
28
38
50
63
78
113
6
74
119
178
257
351
458
582
853
8
80
130
193
279
384
501
636
937
10
84
138
207
299
409
538
686
1010
15
NA
152
233
334
467
611
781
1156
20
NA
NA
250
368
508
668
858
1286
30
NA
NA
NA
404
564
747
969
1473
50
NA
NA
NA
NA
NA
831
1089
1692
100
NA
NA
NA
NA
NA
NA
NA
1921
For SI units, 1 in. = 25.4 mm, 1 in."
[NFPA54 Table 13.2(h)]
= frl5 mm-, 1 ft = 0.305 ra, 1000 Btu per hr = 0.293 kW.
98
WATER HEATERS
Table 5-22
Table 5-22 Exterior Masonry Chimney
Number of Appliances:
Appliance Type:
Appliance Vent Coimeclion:
TSvo or More
FAN ■!■ NAT
Ty]5e B Double-Wall Connector
SPECIAL USE: Minimum Allowable Input Rating of Space-Heating Appliance in Thousands of Btu pei Hour
Vent
Height
Intcnial Aiea
of Chimney (in.^)
H
(ft)
12
19
28
38
50
63
78
113
Local 99% mntcr design temperature; 37°F or greater
6
8
10
15
NA
21)
NA
NA
123
190
249
184
30
NA
NA
NA
334
398
393
334
50
NA
NA
NA
NA
NA
714
707
579
KIO
NA
NA
NA
NA
NA
NA
NA
1000
Local 99% Awntcr design temperature; 27''1'' to 30"!
6
68
110
156
180
212
266
8
82
127
167
187
214
263
10
51
97
141
183
210
226
265
15
NA
111
142
183
233
253
274
305
20
NA
NA
187
230
284
307
330
362
30
NA
NA
NA
330
319
419
445
485
60
NA
NA
NA
NA
NA
672
705
763
100
NA
NA
NA
NA
NA
NA
NA
1554
Local 99% winter design temperature: WF to 26°r
6
55
99
141
182
215
269
349
8
62
74
111
154
197
226
264
352
10
NA
90
125
1()9
214
245
278
358
15
NA
NA
167
212
263
296
331
398
20
NA
NA
212
258
316
352
387
457
30
NA
NA
NA
362
429
470
507
581
50
NA
NA
NA
NA
NA
723
766
862
100
NA
NA
NA
NA
NA
NA
NA
1669
Local 99% winter design temperature: 5°F to 16°F
6
NA
78
121
166
214
252
301
416
8
NA
94
135
182
230
269
312
423
10
NA
111
149
198
250
289
331
430
15
NA
NA
193
247
305
346
393
486
20
NA
NA
NA
293
360
408
450
547
30
NA
NA
NA
377
450
531
580
BS2
50
NA
NA
NA
NA
NA
797
863
972
100
NA
NA
NA
NA
NA
NA
NA
1833
I
-ocal 99% winter design
temperatiu-e: -1Q°F to 4T
6
NA
NA
145
196
249
,296
349
484
8
NA
NA
159
213
209
320
371
494
10
NA
NA
175
231
292
3SB
397
513
15
NA
NA
NA
283
351
4:04
457
586
20
NA
NA
NA
333
408
468
528
650
30
NA
NA
NA
NA
NA
603
667
805
50
NA
NA
NA
NA
NA
NA
955
1003
100
NA
NA
NA
NA
NA
NA
NA
NA
Local 99% ivinler design temperature; -IFF or lower
Not recommended io
any vent configurations
For SI units, 1 in. = 25.4 mm, 1. In.'' = 64!) nim'^, 1 ft = 0.305 m, 1000 Btu per lir = 0.293 kW.
Note: See Figure G.2.4for amap showing local 99 percent winter design temperatvires in the United States.
[NFI>A 54 Table 13.2(i)]
99
Figure G.1 (a) -G.1(d)
2007 CALIFORNIA PLUMBING CODE
PART II
This is originally from NFPA 54,
which contains additional references from the UPC.
Sizing of Venting Systems Serving Appliances
Equipped with Draft Hoods, Category I
Appliances, and Appliances Listed for Use
with Type B Vents
G. 1 Examples Using Single Appliance Venting Ihbles. See Fig-
ure G.l(a) through Figure G.l(n).
Ventoap^-C±3_
Table 5-8 is used when sizing Type B double-wall
gas vent connected directly to the appliance.
Note: The appliance can be either Category 1 draft-
hood-equipped or fan-assisted type.
FIGURE G.l(a) I^pe B Double-%11 Vent S;fstem Serving a
Single Appliance with a lype B DoubIe-\1M Vent.
Tlle-llned masonry -
chimney
Type B double-wall /y
gas vent used as ^ " '
connector
Table 5-10 Is used when sizing a Type B double-wall gas
vent connector attached to a tile-lined masonry chimney
Notes:
1. 4 is the equivalent cross-sectional area of the tile liner.
2. The appliance can be either Category 1 draft-hood-
equipped or fan-assisted type.
FIGUB£G.l(c) Vent S}istem Serving a Sin^e Appliance With a
Masonry CUbmney and a TJipe B Soable-%11 Vent Connector.
Vent oap-H:
TVpeB
double-wall -
gas vent
Single-wall
vent connector
all— »-(f
neotor
Table 5-9 is used when sizing a single-wall metal vent
connector attached to a Type B double-wall gas vent.
Note: The appliance can be either Category I draft-
hood-equipped or fan-assisted type.
FIGURE G.l(b) Tirpe B DoublerWall Vent System Serving !
Single Appliance With a Single-t^W Metal Vent Connector.
f
Tile-lined masonry— »•
chimney
1 -
1
f
V
f
1
1
Single-wall — w
vent connector
A
1
£
_H
i-
L_
Table 5-11 is used when sizing a single-wall vent
connector attached to a tile-lined masonry chimney.
Notes:
1. /4 is the equivalent cross-sectional area of the tile liner.
2. The appliance can be either Category 1 draft-hood-
equipped or fan-assisted type.
FIGUREG.l(d) Vent System Serving a Single Appliance Using
a Masonry Chimney and a Sln^e-W^ Metal Vent Connector.
100
WATER HEATERS
Figure G.1(e)- G.I (h)
V_
Vent cap
r-
""
p-*-vent cap
1 L
->
«-D
H
-♦—Type B double-wall
common vent
i ^
(( k "ta
1
' <
Conr
] rise 1
. ■
ector
single-wall vent
connectors
Asbestos cement Type B or single-wall metal vent
serving a single draft-hood-equipped appliance.
(See Table 5-12)
KTGTJRE G.l(e) Asbestos Cement Type B or Single-^^^
Metal Vent System Serving a Single Draft-Hood-Equipped
Appliance.
Table 5-15 is used when sizing single-wall vent
connectors attached to a Type B double-wall
common vent.
Note: Each appliance can be either Category I draft-
hood-equipped or fan-assisted type.
FIGURE G.l(g) Vent System Serving Two or More AppU-
ances With T^e B Double-MW Vent and Single-^l^ll Metal
Vent Connectors.
Vent cap
Tile-lined masonry
chimney
TVpeB
double-wall
gas vent used
as connectors
Table 5-14 is used when sizing Type B double-wall
gas vent connectors attached to a Type B double-
wall common vent
Note: Each appliance can be either Category I draft-
hood-equipped or fan-assisted type.
FIGURE G.l(f) Vent^temServinglVoorMoreAppliances
With Type B Double-\^W Vent and Type B Double-AWI Vent
Connectors.
Table 5-16 Is used when sizing Type B double-wall vent
connectors attached to a tile-lined masonry chimney.
Notes:
1. A is the equivalent cross-sectional area of the tile liner.
2. Each appliance can be either Category i draft-fiood-
equipped or fan-assisted type.
FIGUB£G.l(h) Masonry Chimney Serving Two or More
.^pliances With Type B Double-Wall Vent Connectors.
101
Table G.1(i)- Table G.I (I)
2007 CALIFORNIA PLUMBING CODE
t T
■«— Tlle-llned masonry
otiimney
A
f—
t
Single-wall vent
connector
■ ^
D
t
Connector
rIseR
k
D
.
= 1
1_
rTTT
Table 5-17 Is used when sizing single-wall metal vent
connectors attached to a tjle-llned masonry chimney.
Notes:
1. Ate the equivalent cross-sectional area of the tile liner.
2. Each appliance can be either Category I draft -
hood-equipped or fan-assisted type.
FIGURE G.l(i) MasoniyOuniney Serving Two or More
i^>pliances with Single-Wall Metal Vent Connectors.
Manifold common
vent connector
[-« Lm-
Connectors
■« *■
_^^Ei
r
D
L
Example: Manifolded common vent connector Lm can
be no greater than 1 8 times the common vent connector
manifold Insidis diameter; that is, a 4 in. (100 mm) Inside
diameter common vent connector manifold should not
exceed 7a in. (1800 mm) in length.
Note: This Is an illustration of a typical manifolded vent
connector. Different appliance, vent connector, or
common vent types are possible.
FIGURE G.l(k) Use of Manifolded Common VentConnector.
1-*— Vent cap
Asbestos cement Type B or single-wail metal pipe vent
serving two or more draft-hood-equipped appliances.
(See Table 5-18 )
mGXJRE G. 1 (i) Asbestos Cement lype B or Single-Wall Metal
Vent System Serving IWo or More Draft-Hood-Equipped Ap-
pliances.
See
13.2.5.
*Lo- ^
Common vent
l-<— Vent cap
^
Tr
Offset
Connectors
^
gfp
fl2
I
Example: Offset common vent
Note: This is an Illustration of a typical offset vent.
Different appliance, vent connector, or vent types are
possible.
HGURE G.l (1) Use of Offset Common Vent.
102
WATER HEATERS
G.1.1-G1.2
V
G.1.1 Example 1: Single Draft-Hood-Equipped
Appliance. An installer has a 120,000-Btu/h input
appliance with a 5-inch diameter draft hood outlet
that needs to be vented into a 10-foot-high Type B
vent system. Wliat size vent should be used assuming
(1) a 5-foot lateral single-wall metal vent connector is
used witli two 90-degree elbows or (2) a 5-foot lateral
single-waU metal vent connector is used witli tliree 90-
degree elbows in tlie vent system? See Figure G.1.1.
Solution
Table 5-9 should be used to solve this problem
because single-waU metal vent connectors are being
used with a Tj^e B vent, as follows:
(1) Read down the first column in Table 5-9 imtil the
row associated with a 10-foot height and 5-foot
lateral is found. Read across this row until a
vent capacity greater than 120,000 Btu/h is
located in the shaded columns labeled NAT Max
for draft-hood-equipped appliances. In this case,
a 5-inch-diameter vent has a capacity of 122,000
Btu/h and can be used for tliis application.
(2) If three 90-degree elbows are used in the vent
system, the maximum vent capacity listed in the
tables must be reduced by 10 percent (see NFPA
54:13.1.3). Tliis implies tliat the 5-inch-diameter
vent has an adjusted capacity of only 110,000
Vent oonneotor Tee
Tee same size as
segment above
/
Common vent size
based on all Inputs •
entering this segment
and available total height
Total input -
^^
Rise
^
■f Increase
'vent
Available total
height H equals
rise plus distance
between tees
Tee same
j^ size as
segment
above
Blu/hr
Input
oonneotor
size If, I
necessary Other Inputs
from below
''A
Vent connector size
depends on:
• input
• Rise
• Available total height H
• Table 5-14 connectors
Common vent size
depends on:
' Combined inputs
• Available total height H
• Table 5-14 common vent
Btu/h. In this case, the vent system must be
increased to 6 inches in diameter. See the
following calculations:
122,000 X 0.90 = 110,000 for 5-inch vent
From Table 5-10, select 6-inch vent.
186,000 X 0.90 = 167,000
This figure is greater than the required
120,000. Therefore, use a 6-inch vent and
connector where tluree elbows are used.
G.1.2. Example 2: Single Fan-Assisted Appliance.
An installer has an 80,000 Btu/h input fan-assisted
appliance that must be installed using 10 feet of
lateral connector attached to a 30-foot high Type B
vent. Two 90 -degree elbows are needed for the
installation. Can a single-waU metal vent comiector
be used for tWs application? See Figure G.1.2.
Solution
Table 5-10 refeirs to the use of single-wall metal vent
connectors with Type B vent. In the first column
find the row associated with a 30-foot height aiTd a
10-foot lateral Read across tliis row, looking at flie
Use Individual vent for top-floor
appliance If connector
requirement for rise or total ,,..
height cannot be met Listed cap
V,.
fe
11 I
1 1 Available total
1 1 height for top-
Use vent ] I floor appliance
connector ' '
table '
1
Rl3e|
Top-floor—
appliance
m
Available total
height for third-
floor appliance
Use vent
connector
table
Third-floor-
appliance
Rise ^
T^
Available total
height for second-
floor appliance
Use vent
connector
table
?5!.^
^
Second-floor
appliance ->-
J
Use available total
height for top-floor
appliance and
combined Input of
all appliances on
common vent
Third Interconnection tee*
Available total height
for third-floor appliance
and combined Input of
^three appliances
(If top-floor appliance
Is not connected,
measure total
height to vent top)
Second Interconnection
Mee*
Use available total
height for.second-floor
appliance and combined
heat Input of two
appliances
First Interconnection tee*
Design vent oonneotor for
first-floor appliance as an
individual vent of this total
height for Input of first-
floor appliance
Tee with cap optional -J
First-floor -
appliance
* Each Interconnection tee Is same size as
segrnent of common vent directly above
FIGURE G.l(m) Multistoiy Gas Vent Design Procedure for
Each Segment of System.
FIGURE G,l(n) Principles of Design of Mullistoiy Vents
Using Vent Connector and Conunon Vent Design Tibbies.
103
G.1.2-G.2.1
2007 CALIFORNIA PLUMBING CODE
FAN Min and FAN Max columns, to find that a 3-
inch diameter single-wall metal vent connector is not
recommended. Moving to the next larger size single-
wall connector (4 inch), we find that a 4-inch
diameter single-wall metal connector has a
recommended maximum vent capacity of 144,000
Btu/h. The 80,000 Btu/h fan-assisted appUance is
outside this range, so the conclusion is that a single-
wall metal connector could be used to vent the
appliance. Table 5-9 shows the acceptable range of
vent capacities for a 4 inch vent with 5 feet of lateral
to be between 72,000 Btu/h and 157,000 Btu/h.
If the appUance cannot be moved closer to the
vertical vent, then a Type B vent cotdd be used as the
connector material. In this case. Table 5-8 shows
that, for a 30-foot-high vent with 10 feet of lateral,
the acceptable range of vent capacities for a 4-inch-
diameter vent attached to a fan-assisted appliance is
between 37,000 Btu/h and 150,000 Btu/h.
"TVpeB
double-wall ~
gas vsnt
lOfl
Draft hood-
equipped appliance
120,000-Btu/hr Input
For SI units, 1 ft = 0.305 m.
FIGUSE G.1.1 Single Draft Hood-Equipped i^pliance —
Example 1.
G.1.3. Example 3: Interpolating Between Table Values.
An installer has an 80,000 Btu/h input appliance with
a 4-inch diameter draft hood outlet that needs to be
vented into a 12-foot-high Type B. Can this appliance
be vented using a 4-inch diameter vent?
Solution
Table 5-8 is used in the case of an aU Type B Vent
system. However, since there is no entry in Table 5-8
for a height of 12 feet, interpolation must be used.
Read down the 4-inch diameter NAT Max colimrn to
the row associated with a 10-foot height and 5-foot
lateral to find the capacity value of 77,000 Btu/h.
Read further down to the 15-foot height, 5-foot
lateral row to find the capacity value of 87,000
Btu/h. The difference between the 15-foot height
capacity value and the 10-foot height capacity value
is 10,000 Btu/h. The capacity for a vent system with
a 12-foot height is equal to the capacity for a 10-foot
height plus 2/5 of the difference between the 10-foot
and 15-foot height values, or 77,000 -t- 2/5 x 10,000 =
81,000 Btu/h. Therefore, a 4-inch diameter vent can
be used in the installation.
G.2 Examples Using Common Venting Tables.
G.2.1 Example 4: Common Venting Two Draft-Hood-
Equipped Appliances. A 35,000-Btu/h water heater is
to be common vented with a 150,000 Btu/h furnace,
using a common vent with a total height of 30 feet.
The connector rise is 2 feet for the water heater with a
horizontal length of 4 feet. The connector rise for the
furnace is 3 feet with a horizontal length of 8 feet.
Assume single-wall metal connectors will be used
with Type B vent. What size connectors and
combined vent should be used in this installation?
30 ft
For SI units, 1ft = 0.305 m.
EIGUKEG.l.Z Single Fan-Assisted ^pliance — Examples.
-cnzi
r i Combined capacity
■ISil; 35,000 + 150,000 =
185,000 Btu/hr
■«— Type B double-
wall gas vent
Draft hood-
equipped
water heater
35,000 Btu/hr
input
Draft hood-
equipped furnace
150,000 Btu/hr
input
FIGURE G.2.1 Common Venting Two Draft Hood-Equipped
Appliances — ' Example 4.
104
WATER HEATERS
G.2.1 -G.2.2
See Figure G.2.1.
Solution
Table 5-15 should be used to size single-wall
metal vent connectors attached to Type B vertical
vents. In the Vent Connector Capacity portion of
Table 5-15, find the row associated with a 30-foot
vent height. For a 2-foot rise on the vent connector
for the water heater, read the shaded columns for
draft-hood-equipped appliances to find tliat a 3-inch
diameter vent connector has a capacity of 37,000
Btu/h. Therefore, a 3-inch single-wall metal vent
connector can be used with the water heater. For a
draft-hood-equipped furnace with a 3-foot rise, read
across the appropriate row to find that a 5-inch-
diameter vent connector has a maximum capacity of
120,000 Btu/h (which is too small for the furnace),
and a 6-inch diameter vent connector has a
maximum vent capacity of 172,000 Btu/h. Therefore,
a 6-inch diameter vent connector should be used
with the 150,000 Btu/h furnace. Since both vent
connector horizontal lengths are less than the
maximum lengths listed in Table 5-8, the table values
can be used witliout adjustments.
In the Common Vent Capacity portion of Table
5-15, find the row associated with a 30-foot vent
height and read over to the NAT + NAT portion of
the 6-inch diameter column to find a maximum
combined capacity of 257,000 Btu/h. Since the two
appliances total only 185,000 Btu/h, a 6-inch
common vent can be used.
G.2.2 Example 5 (a): Common Venting a Draft-
Hood-Equipped Water Heater with a Fan-Assisted
Furnace into a Type B Vent. In this case, a 35,000-
Btu/h input draft-hood-equipped water heater witli a
4-incli diameter draft hood outlet, 2-feet of connector
rise, and 4-feet of horizontal lengtli is to be common
vented with a 100,000 Btu/h fan-assisted furnace
with a 4-incli diameter flue collar, 3-feet of connector
rise, and 6-feet of horizontal length. The common
vent consists of a 30-foot height of Type B vent. What
are the recommended vent diameters for each
connector and the common vent? Tlie installer would
like to use a single-wall metal vent comiector. See
Figure G.2.2.
Solution (See Table 5-15)
Water Heater Vent Connector Diameter. Since
the water heater vent connector horizontal length of
4 feet is less tlian tlie maximum value Hsted in Table
5-15, the venting table values can be used without
adjustment. Using the Vent Connector Capacity
portion of Table 5-15, read down the Total Vent
Height (H) column to 30 feet and read across the 2-
feet Connector Rise (R) row to the fkst Btu/h rating
Combined capacity
35,000 + 100,000 =
135,000 Btu/hr
3ft
o
TypeB
-double-wall
gas vent soft
Single-wall
connectors
Fan-assisted furnace
100,000 Btu/hr Input
Water heater
35,000 Btu/hr
Input
For SI units, 1 000 Btu/hr = 0.293 kW, 1 ft = 0.305 m.
FIGURE G.2.2 Common Venting a Draft Hood-Equipped
Water Heater >vith a Fan-Assisted Fumaqe into a l^pe B
Double-Wall Common Vent — Example 5(a).
TABLE G.2.3
Masonry Chimney Liner Dimensions withi Circular
Equivalents
Inside
Inside
Diameter
Nominal Dimensions
or Equivalent Equivalent
Liner Size of Liner
Diameter
Area
(in.)
(in.)
(in.)
(in.^)
4x8
2-1/2x6-1/2
4.0
12.2
5.0
19.6
6.0
28.3
7.0
38.3
8x8
6-3/4x6-3/4
7.4
42.7
8.0
50.3
8x12
6-1/2 x 10-1/2
9.0
63.6
10.0
78.5
12x12
9-3/4x9-3/4
10.4
83.3
11.0
95.0
12x16
9-1/2 X 13-1/2
11.8
107.5
12.0
113.0
14.0
153.9
16x16
13-1/4x13-1/4
14.5
162.9
15.0
176.7
16x20
13x17
16.2
206.1
18.0
2544
20x20
16-1/2 X 16-3/4
18.2
260.2
20.0
314.1
20x24
16-1/2x20-1/2
20.1
314.2
22.0
308.1
24x24
20-1/4x20-1/4
22.1
308.1
24.0
452.3
24x28
20-1/4 X 24-1/4
24.1
456.2
28x28
24-1/4x24-1/4
26.4
543.3
27.0
572.5
30x30
25-1/2x25-1/2
27.9
607.0
30x36
25-1/2 X 31-1/2
30.9
749.9
33.0
855.3
36x36
31-1/2x31-1/2
34.4
929.4
36.0
1017.9
For SI tuiits, 1 in. = 25.4 mm, 1 in.^ = 645 mm^
Note; Wlien liner sizes differ dimensionally from those shown in tliis
table, equivalent diameters can be determined from published tables for
square and rectangtilar ducts of equivalent carrying capacity or by
otlier engineering meiliods.
105
G.2.2-G.2.4
2007 CALIFORNIA PLUMBING CODE
in the NAT Max column that is equal to or greater
than the water heater input rating. The table shows
that a 3-inch vent connector has a maximum input
rating of 37,000 Btu/h. Although this rating is
greater than the water heater input rating, a 3-inch
vent connector is prohibited by Section 511.2.18. A 4-
inch vent connector has a maximum input rating of
67,000 Btu/h and is equal to the draft hood outlet
diameter. A 4-inch vent connector is selected. Since
the water heater is equipped with a draft hood, there
are no minimum input rating restrictions.
Furnace Vent Connector Diameter. Using the Vent
Connector Capacity portion of Table 5-15, read down
the Total Vent Height (H) column to 30 feet and
across the 3-foot Connector Rise (R) row. Since the
furnace has a fan-assisted combustion system, find
the first FAN Max column with a Btu/h rating
greater than the furnace input rating. The 4-inch
vent connector has a maximum input rating of
119,000 Btu/h and a minimttm input rating of 85,000
Btu/h.
The 100,000-Btu/h furnace in this example falls
within this range, so a 4-inch connector is adequate.
Since the furnace vent cormector horizontal length of
6 feet is less than the maximiun value listed in Table
5-8, the venting table values can be used without
adjustment. If the furnace had an input rating of
80,000 Btu/h, then a Type B vent connector would be
needed in order to meet the minimum capacity limit,
(see Table 5-14)
Common Vent Diameter. The total input to the
comnion vent is 135,000 Btu/h. Using the Common
Vent Capacity portion of Table 5-15, read down the
Vent Height (H) column to 30 feet and across this
row to find the smallest vent diameter in the FAN +
NAT column that has a Btu/h rating equal to or
greater than 135,000 Btu/h. The 4-inch common
vent has a capacity of 132,000 Btu/h and the 5-inch
common vent has a capacity of 202,000 Btu/h.
Therefore, the 5-inch common vent should be vised in
this example.
Summary: In this example, the installer can use a 4-
inch diameter, single-waU metal vent cormector for
the water heater and a 4-inch-diameter, single-wall
metal vent cormector for the furnace. The common
vent shotdd be a 5-inch-diameter Type B vent.
G.2.3 Example 5 (b): Common Venting into an
Interior Masoruy Chimney. In this case, the water
heater and fan-assisted furnace of Example 5 (a) are
to be common-vented into a clay-tile-lined masoruy
chimney with a 30-foot height. The chimney is not
exposed to the outdoors below the roof line. The
internal dimensions of the clay tile liner are
nominally 8 inches x 12 inches. Assiuning the same
vent connector heights, laterals, and materials found
in example 5 (a), what are the recommended vent
connector diameters, and is this an acceptable
installation?
Solution
Table 5-17 is used to size common venting
installations involving single-wall connectors into
masonry chimneys.
Water Heater Vent Connector Diameter. Using
Table 5-17, Vent Connector Capacity, read down the
Vent Height (H) column to 30 feet, and read across
the 2-foot Connector Rise (R) row to the first Btu/h
rating in the NAT Max column that is equal to or
greater than the water heater input rating. The table
shows that a 3-inch vent connector has a maximum
input of only 31,000 Btu/h, while a 4-inch vent
connector has a maximum input of 57,000 Btu/h. A
4-inch vent cormector must therefore be used.
Furnace Vent Connector Diameter. Using the Vent
Connector Capacity portion of Table 5-17, read down
the total Vent Height (U) column to 30 feet and
across the 3-feet Connector Rise (R) row. Because the
furnace has a fan-assisted combustion system, find
the first FAN Max column with a Btu/h rating
greater than the furnace input rating. The 4-inch vent
cormector has a maximum input rating of 127,000
Btu/h and a minimum input rating of 95,000 Btu/h.
The 100,000 Btu/h furnace in this example falls
within this range, so a 4-inch connector is adequate.
Masonry Chimney. From Table G.2.3, the
equivalent area for a nominal Uner size of 8 inches x
12 inches is 63.6 inchesl Using Table 5-17, Common
Vent Capacity, read down the FAN + NAT column
tmder the Minimum Internal Area of Chimney value
of 63 to the row for 30-foot height to find a capacity
value of 739,000 Btu/h. The combined input rating
of the furnace and water heater, 135,000 Btu/h, is
less than the table value so this is an acceptable
installation.
Section 511.2.4 requires the common vent area to be
no greater than seven times the smallest listed
appliance categorized vent area, flue collar area, or
draft hood outlet area. Both appliances in this
installation have 4-inch-diameter outlets. From Table
G.2.3, the equivalent area for an inside diameter of 4-
inch is 12.2 in.^ Seven times 12.2 equals 85.4, which is
greater than 63.6, so this configuration is acceptable.
G.2.4 Example 5 (c): Common Venting into an
Exterior Masonry Chimney. In this case, the water
heater and fan-assisted furnace of Examples 5(a) and
5(b) are to be common-vented into an exterior
masonry chimney. The chimney height, clay-tile-
liner dimensions, and vent cormector heights and
laterals are the same as in Example 5(b). This system
is being installed in Charlotte, North Carolina. Does
this exterior masonry chimney need to be relined? If
106
WATER HEATERS
G.2.4
so, what corrugated metallic liner size is
recommended? Wliat vent connector diameters are
recommended? See Table G.2.3 and Figure 5-14.
Solution
Accorduig to 13.2.18, Tjrpe B vent comiectors are
required to be used with exterior masomy cliimneys,
Use Table 5-21(a) and Table 5-21(b) to size
FAN+NAT common ventuig iiistallations involving
Type-B double-wall connectors into exterior
masonry cliimneys.
The local 99 percent winter design temperature
needed to use Table 5-21 (a) and Table 5-21 (b) can be
found in tlie ASHRAE Handbook - Fundamentals. For
Qiarlotte, NoiHi caroBna, tliis design temperature is 19°F.
Chimney Liner Requirement. As in Example 5 (b),
use the 63 in.^ column of Table 5-21 (a) to the 30 ft
height row to find that the combined appliance
maximum input is 747,000 Btu/h. The combined
input rating of the appliaiice in this installation,
135,000 Btu/h, is less than the maximum value, so
this criterion is satisfied. Table 5-21 (b), at a 19 °F
design temperatvire, and at tlie same vent height and
iiiternal area used earlier, shows that the minimum
allowable input rating of a space-heating appliance is
470,000 Btu/h. The furnace input rating of 100,000
Btu/h is less than this minimum value. So this
criterion is not satisfied, and an alternative venting
design needs to be used, such as a Type B vent
shown in Example 5(a) or a listed chimney liner
system shown in the rest of tlie example.
According to Section 511.1.6, Table 5-9 or Table
5-10 are used for sizing corrugated metallic Hners in
masonry chimneys, with the maximum common
vent capacities reduced by 20 percent, This example
will be continued assuming Type B vent cpmiectors.
iNater Heater Vent Connector Diameter. Using
Table 5-14 Coraiector Capacity, read down the total
Vent Height (H) colimm to 30 feet, and read across
the 2-foot Connector Rise (R) row to the first
Btu/hour rating in the NAT Max column that is
equal to or greater than the water heater input
rating. The table shows that a 3 in. vent connector
has a maximum capacity of 39,000 Btu/h. Altliough
this rating is greater than the water heater input
rating, a 3-inch vent connector is prohibited by
511.1.6. A 4 iLi. vent connector has a maximum input
rating of 70,000 Btu/h and is equal to the draft hood
outlet diameter. A 4-inch vent connector is selected.
Furnace Vent Connector Diameter. Usmg Table 5-
14, Vent Connector Capacity, read down the total
Vent Height (H) column to 30 feet, and read across
the 3-foot Comiector Rise (R) row to the first Btu/h
rating in the FAN MAX colunui that is equal to or
greater than the furnace mput rating. The 100,000
Btu/h furnace in tWs example falls witiiin this range,
so a 4-inch comiector is adequate.
Chimney Liner Diameter. The total input to the
common vent is 135,000 Btu/h. Using tlie Common
Vent Capacity portion of Table 5-14, read down tiie
total Vent Height (H) column to 30 feet and across
this row to find the smallest vent diameter in the
FAN + NAT column that has a Btu/h rating greater
than 135,000 Btu/h. The 4 in. common vent has a
capacity of 138,000 Btu/h. Reducmg the maximum
capacity by 20 percent (see 13.2.19) results in a
maximum capacity for a 4-inch corrugated liner of
110,000 Btu/h, less than the total input of 135,000
Btu/h. So a larger liner is needed. The 5-inch
common vent capacity listed in Table 5-14 is 210,000
Btu/h, and after reducing by 20 percent is 168,000
Btu/h. Therefore, a 5-inch corrugated metal liner
should be used in tliis example.
Single Wall Connectors. Once it has been
established that relining the chimney is necessary.
Type B double-wall vent connectors are not
specifically required. Tliis example could be redone
usmg Table 5-15 for smgle-waU vent connectors. For
this case, the vent connector and liner diameters
would be tiie same as found for Type B double-wall
connectors.
The following is originally from NFPA 54, which
contains additional reference.
Example of Combination of Indoor and Outdoor
Combustion and Ventilation Opening Design.
J.l Example of Combination Indoor and Outdoor
Combustion Air Opening. Determine the required
combination of indoor and outdoor combustion air
opening sizes for the following equipment
iiistaUation example.
Example Installation: A fan-assisted furnace and a
draft-hood-equipped water heater with the following
inputs are located in a 15-foot x 30-foot basement
with an 8-foot ceiling. No additional indoor spaces
can be used to help meet the equipment combustion
air needs.
Fan-Assisted Furnace Input: 100,000 Btu/h
Draft-Hood-Equipped Water Heater Input:
40,000 Btii/h
Solution
(1) Determine the total available room volume:
Equipment room volume: 15 feet x 30 feet witli an
8-foot ceihng = 3,600 feet^
(2) Determine tlie total required volume: Tlie standard
method to determine combustion air will be
used to calculate tiie required volimie.
The combined mput for the appliances located in
107
G.2.4
2007 CALIFORNIA PLUMBING CODE
the basement is calculated as follows:
100,000 Btu/h +40,000 Btu/h = 140,000 Btu/h
The Standard Method requires that the required
volume be determined based on 50 cubic feet per
1,000 Btu/hour. Using Table A.9.3.2.1, the
required volume for a 140,000 Btu/h water
heater is 7,000 feet'.
Conclusion: Indoor volume is insufficient to
supply combustion air since the total of 3,600 feef
does not meet the required volume of 7000 feef.
Therefore, additional combustion air must be
provided from the outdoors.
(3) Determine ratio of the available volume to the
required volume:
3,600 ft.' = 0.51
7000 ft.'
(4) Determine the reduction factor to be used to
reduce the full outdoor air opening size to the
minimum required based on ratio of indoor
spaces:
1.00 - 0.51 (from Step 3) = 0.49
(5) Determine the single outdoor combustion air
opening size as if aU combustion air is to come
from outdoors. In this example, the combustion
air opening directly connmunicates with the outdoors.
140,000 Btu/h= 47 in.^
3,000 Btu/in.^
(6) Determine the minimum outdoor combustion
air opening area:
Outdoor opening area = 0.49
(from Step 4) x 47 in.'= 23 in.^'
Section 507.3 requires the minimum dimension of the
air opening should not be less than 3 inches.
TABLE A.9.3.2.1
Standard Method Volume, All Appliances
Appliance Input
Required Volume
(Btu/h)
(ft.=)
5,000
250
10,000
500
15,000
750
20,000
1,000
25,000
1,250
30,000
1,500
35,000
1,750
40,000
2,000
45,000
2,250
50,000
2,500
55,000
2,750
60,000
3,000
65,000
3,250
70,000
3,500
75,000
3,750
80,000
4,000
85,000
4,250
90,000
4,500
95,000
4,750
100,000
5,000
105,000
5,250
110,000
5,500
115,000
5,750
120,000
6,000
125,000
6,250
130,000
6,500
135,000
6,750
140,000
7,000
145,000
7,250
150,000
7,500
160,000
8,000
170,000
8,500
180,000
9,000
190,000
9,500
200,000
10,000
210,000
10,500
220,000
11,000
230,000
11,500
240,000
12,000
250,000
12,500
260,000
13,000
270,000
13,500
280,000
14,000
290,000
14,500
' 300,000
15,000
5074.1 See Figure 5-8 • 507.4.1(1) See Figure 5-9 and
Figure 5-10 • 507.4.1(2) See Figiire 5-11 • 507.4.2 See
Figure 5-12 • For information on gas convenience
outlets, see AGA 7-90, Requirements for Gas Convenience
Outlets.
108
CHAPTERS
WATER SUPPLY AND DISTRIBUTION
601 .0 Running Water Required.
601 .1 Except where not deemed necessary for safety
or sanitation by the Authority Having Jurisdiction,
each plumbing fixture shall be provided with an
adequate supply of potable running water piped
thereto in an approved marmer, so arranged as to
flush and keep it in a clean and sanitary condition
without danger of backflow or cross-connection.
Water closets and urinals shall be flushed by means
of an approved flush tanlc or flushometer valve. In
jurisdictions that adopt Chapter 16, water closets,
urinals, and trap primers in designated non-
residential buildings may be provided with
reclaimed water as defined and regulated by
Chapter 16 of this code. [HCD 1 & HCD 2]
Exceptions 1, 2 and 3 apply.
Exceptions:
(1) Listed fixtures tliat do not require water for
tlieir operation and are not connected to the
water supply.
(2) For limited-density owner-built rural dwellings,
potable water shall be available to the dwelling
site, although such water need not be
■pressurized. Wltere water is not piped from a
well, spring, cistern or other source, there shall
be a minimum reserve of 50 gallons (189 L) of
potable water available. Wltere water delivery is
pressurized, piping shall be installed in
accordance with the provisions of this chapter.
(3) Where deemed not necessary for safety or
sanitation by the Enforcing Agency.
601.2 Identification of a Potable and Nonpotable
Water System. In all buUdings where potable water
and nonpotable water systems are installed, each
system shall be clearly identified. Eacli system shall
be color coded as follows:
601.2.1 Potable Water - Green background
wida wliite lettering.
601.2.2 Nonpotable Water - Yellow background
witli black lettering, witli tlie words "CAUTION:
NONPOTABLE WATER, DO NOT DRIMCYHCD
1 & HCD 2] An international symbol of a glass in a
circle with a slash through it shall be provided similar
to that provided in Figure 6-1 .
Each system shall be identified with a
colored band to designate the liquid being
conveyed, and the direction of normal flow shaU
be clearly shown. The minimum size of the
letters and lengtli of die color field shall conform
to Table 6-1.
A colored identification band shall be
indicated every twenty (20) feet (6096 mm) but
at least once per room, and shall be visible from
tlie floor level.
Where vacuum breakers or backflow
preventers are installed with fixtures listed in
Table 14-1, identification of the discharge side
may be omitted. Each outlet on the nonpotable
water line that could be used for special
purposes shall be posted as follows:
"CAUTION: NONPOTABLE WATER, DO NOT
DRINK."
Figure 6-1
International Symbol
601.2.3 Reclaimed Water - Purple (Pantone
color #512) background and shall be imprinted
in. nominal 1/2-inch (12.7 mm) high, black upper-
case letters, with the words "CAUTION:
RECLAIMED WATER, DO NOT DRINK." [HCD
1 & HCD 2] An international symbol of a glass in a
circle with a slash through it shall be provided similar
to that provided in Figure 6-1.
601 .3 Faucets and diverters shall be connected to tlie
water distribution system so that hot water
corresponds to the left side of the fittiiigs.
TABLE 6-1
Minimum Lengtti of Color Field and Size of Letters
Outside Diameter Minimum Lengtii Minimum Size ^
of Pipe or Covering of Coior Field of Letters
inclies (mm) inclies (mm) inclies (mm)
l/2tol-l/4
(15 to 32)
8
(203)
1/2
(12.7)
1-1/2 to 2
(40 to 50)
8
(203)
3/4
(19.1)
2-1/2 to 6
(65 to 150)
12
(305)
1-1/4
(32)
8 to 10
(200 to 250)
24
(619)
2-1/2
(64)
Over 10
(Over 250)
32
(813)
3-1/2
(89)
601.4 [HCD 1 & HCD 2] All sources for drinking water
shall be maintained in a clean and sanitary condition.
Drinking fountains and portable water dispensers shall not
be located in toilet rooms.
109
601 .5 - Table 6-2
2007 CALIFORNIA PLUMBING CODE
601.5 [CA] Schools of Cosmetology and Cosme-
tological Establishments.
601.5.1 Hot-and Cold running Water. At least
one sink with hot-and cold-running water shall he
provided in each work area or workroom where
hairdressing is performed in each school and
establishment.
601.5.2 Handwashing Facilities. Each school and
establishment shall provide adequate handwashing
facilities, including hot-and cold-running water,
located within or adjacent to the toilet room or rooms
in accordance with Table 4-1.
601.5.3 Drinldng Water. Each school and
establishment shall supply potable drinking water
convenient to students, patrons and employees.
Approved sanitary drinking fountains shall be
installed and so regulated that a jet of at least 2
inches (51 mm) shall be constantly available.
601.6 [AGR] Meat and Poultry Processing Plants.
Except as provided in Section 601.6.4, the water supply
shall be ample and potable, with adequate pressure and
facilities for its distribution in the plant, and its protection
against contamination and pollution.
Note: A water report, issued under the authority of
the state health agency, certifying to the potability of
the water supply, shall be obtained by the applicant
and furnished to the administrator whenever such
report is required by the administrator.
TABLE 6-2
Backflow Prevention Devices, Assemblies, and Methods
Degree of Hazard
Device,
Assembly, or
Method'
Pollution
(Low Hazard)
Contamination
(High Hazard)
Installation''
Bacl<-
Siphonage
Back-
Pressure
Back-
Siphonage
Back-
Pressure
Airgap
X
X
See Table 6-3 in this chapter.
Atmospheric
Vacutun
Breaker
X
X
Upright position. No valve
downstream. Minimum of
six (6) inches (152 mm)
or listed distance above all
downstream piping
and flood-level rim of receptor.*^
Spill-Resistant
Pressvxre-Type
Vacuum
Breaker
X
X
Upright position. Minimum
of six (6) inches (152 mm) or
listed distance above all
downstream piping
and flood-level rim of receptor.'
Double Check
Valve Backflow
Preventer
X
X
Horizontal, unless otherwise
listed. Requires one (1)
foot (305 mm) minimum
clearance at bottom for
maintenance. May need platform/
ladder for test and repair.
Does not discharge water.
Pressure
Vacuum
Breaker
X
X
Upright position. May have
valves downstream. Minimum
twelve (12) inches (305 mm)
above all downstream, piping and
flood-level rim of receptor. May
discharge water.
Reduced
Pressure
Principle
Backflow
Preventer
X
X
X
X
Horizontal unless otherwise
listed. Requires one (1) foot
(305 mm) minimimi clear-
ance at bottom for main-
tenance. May need platform
ladder for test and repair.
May discharge water.
' See description of devices and assemblies in this chapter.
^ Installation in pit or vault requires previous approval by the Authority Having Jurisdiction.
' Refer to general and specific requirement for installation.
* Not to be subjected to operating pressure for more than 12 hours in any 24-hoxir period.
^ For deck-mounted and equipment-moimted vacuum breaker, see Section 603.4.15.
110
WATER SUPPLY AND DISTRIBUTION
601 .6 - Table 6-3
601.6.1 A supply of hot water shall he available.
601.6.2 Hose connections with steam and water-
mixing valves or hot-water hose connections shall be
provided at locations throughout the plant.
601.6.3 The refuse rooms shall be provided with
facilities for washing refuse cans and other equipment
in the rooms.
601.6.4 Nonpotable water is permitted only in those
parts of official plants where no product is handled or
prepared, and then only for limited purposes, such as
on condensers not connected with the potable water
supply, in vapor lines serving inedible product
rendering tanks, and in sewer lines for moving heavy
solids in the sewage. In all cases, nonpotable water
lines shall be clearly identified and shall not be cross
connected with the potable water supply.
Exception: Cross connection is permitted if this is
ncessary for fire protection and such connection is of
a type with a break to ensure against accidental
contamination, and to he approved by local
authorities and by the Department.
601.6.5 Equipment using potable water shall be so
installed as to prevent backsiphonage into the potable
water system.
601.6.6 All pipelines, reservoirs, tanks, cooling
towers and like equipment employed in handling
reused water shall be constructed and installed so as
to facilitate their cleaning and inspection.
601.6.7 Hot water of such temperature as to
accomplish a thorough cleanup shall he delivered
under pressure to outlets.
601.4.7.1 An ample suppy of water at not less
than 180 °F (82°C) shall be available when used
for sanitizing purposes.
601.6.8 Pens, alleys and runways shall have hose
connections for cleanup purposes.
601.7 [AGR] Collection Centers and Facilities
601.7.1 The water supply shall be ample with facilities
for its distribution. An ample supply of water at not
less than 180 °F (82 °C), or other suitable method.
TABLE 6-3
Minimum Airgaps for Water Distribution"
Fixtures
Wiien not affected
by sidewalls^
inciies (mm)
Wlien affected by
sidewaii'
inches (mm)
Effective openings' not greater
than one-half (1/2) inch (12.7 mm)
in diameter
1 (25.4)
1-1/2 (38)
Effective openings' not greater •
daan diree-quarters (3/4) incli
(20 mm) in. diameter
1-1/2 (38)
2-1/4 (57)
Effective openings' not greater
tlian one (1) inch (25 mm) in
dianaeter
2 (51)
3 (76)
Effective openings' greater than
one (1) inch (25 mm) in diameter
Two (2) times
diameter of
effective opening
Tk-ee (3) times
diameter of
effective opening
' Sidewalls, ribs, or similar obstructions do not affect airgaps wlien spaced from the inside edge of the spout opening a distance
greater than tliree times the diameter of the effective opening for a shigle wall, or a distance greater than four times tlae effective
opening for two intersecting walls.
^ Vertical walls, ribs, or similar obstructions extending from the water surface to or above tlie horizontal plane of die spout opening
other than specified in Note 1 above. The effect of tliree or more such vertical walls or ribs has not been determined. In such cases,
the airgap shall be measured from the top of the wall.
' The effective opening shall be tlie minimum cross-sectional area at the seat of the control valve or the supply pipe or tubing that
feeds tlie device or outlet, If two or more lines supply one outlet, the effective opening shall be the sum of the cross=sectional areas
of the individual supply lines or the area of the single outlet, whichever is smaller.
* Airgaps less tlian one (1) inch (25.4 mm) shall be approved only as a permanent part of a listed assembly tliat has been tested
under actual backflow conditions with vacuums of to 25 indies (635 mm) of mercury.
111
601.6-603.1
2007 CALIFORNIA PLUMBING CODE
601.7.2 The vehicle cleaning and sanitizing area
shall be provided with adequate line steam, producing
a temperature of at least 180°F (82°C), or other
suitable method.
601.7.3 Hose connections with steam and water-
mixing valves ofhot-and cold-water hose connections
shall be provided at locations throughout the building
and at unloading and vehicle cleaning slabs.
601.8 [AGR] Renderers. This area shall be provided
with live steam or other method of sanitizing vehicles.
601.9 [AGR] Horse Meat and Pet Food Establishments.
601.9. 1 The water supply shall be ample, clean and
potable, with facilities for its distribution in the plant,
and its protection against contamination and
pollution.
601.9. 1. 1 Equipment using potable water shall
be so installed as to prevent backsiphonage into
the potable water system.
601.9.1.2 Nonpotable water is permitted only in
those parts of official plants where no edible product
is handled or prepared, and then only for limited
purposes, such as on ammonia condensers not
connected with the potable water supply, in vapor
lines serving inedible product rendering tanks, in
connection luith equipment used for washing and
washing inedible products preparatory to tanking,
and in sewer lines for moving heavy solids in
sewage. In all cases, nonpotable luater lines shall be
clearly identified and shall not be cross connected
with the potable water supply.
Exception: Cross connection is permitted if this
is necessary for fire protection, and such
connection is of a type with a break to ensure
against accidental contamination, and is approved
by local authorities or by the Department.
601.9.2 All pipelines, reservoirs, tanks, cooling
towers and like equipment employed in handling
reused water shall be constructed and installed so as
to facilitate their cleaning and inspection.
601.9.3 Hot water for cleaning rooms and equipment
shall be delivered under pressure to outlets and shall
be of such temperature as to accomplish a thorough
cleanup.
601.9.3.1 An ample supply of water at not less
than 180°F (82°C) shall be available when used
for sanitizing purposes.
601.9.4 Pens, alleys and runways shall have hose
connections for cleanups purposes.
602.0 Unlawful Connections
602.1 No installation of potable water supply piping
or part thereof shall be made in such a manner that it
will be possible for used, unclean, polluted, or
contaminated water, mixtures, or substances to enter
any portion of such piping from any tank, receptor,
equipment, or plumbing fixture by reason of back-
siphonage, suction, or any other cause, either dturing
normal use and operation thereof, or when any such
tank, receptor, equipment, or plumbing fixture is
flooded or subject to pressure in excess of the
operating pressure in the hot or cold water piping.
602.2 No person shall make a connection or allow one
to exist between pipes or conduits carrying domestic
water supplied by any public or private water service
system, and any pipes, conduits, or fixtures
containing or carrying water from any other source or
containing or carrying water that has been used for
any purpose whatsoever, or any piping carrying
chemicals, liquids, gases, or any substances
whatsoever, unless there is provided a backflow
prevention device approved for the potential hazard
and maintained in accordance with this code. Each
point of use shall be separately protected when
potential cross-contamination of individual tmits exists.
602.3 No plumbing fixture, device, or construction
shall be installed or maintained or shall be connected
to any domestic water supply when such installation
or coimection may provide a possibility of polluting
such water supply or may provide a cross-
cormection between a distributing system of water
for drinking and domestic purposes and water that
may become contaminated by such plumbing
fixture, device, or construction unless there is
provided a backflow prevention device approved for
the potential hazard.
602.4 No water piping supplied by any private
water supply system shall be connected to any other
source of supply without the approval of the
Authority Having Jurisdiction, Healtiti Department,
or other department having jurisdiction.
603.0 Cross-connection Control.
Cross-connection control shall be provided in ac-
cordance with the provisions of this chapter.
No person shall install any water-operated
equipment or mechanism, or use any water-treating
chemical or substance, if it is found that such
equipment, mechanism, chemical, or substance may
cause pollution or contamination of the domestic
water supply. Such equipment or mechanism may be
permitted only when equipped with an approved
backflow prevention deAdce or assembly.
603.1 Approval of Devices or Assemblies. Before
any device or assembly is installed for the prevention
of backflow, it shall have first been approved by the
Authority Having Jurisdiction. Devices or assemblies
shall be tested for conformity with recognized stan-
dards or other standards acceptable to the Authority
Having Jurisdiction that are consistent with the
112
WATER SUPPLY AND DISTRIBUTION
603.1 -603.3
intent of tliis code.
All devices or assemblies installed in a potable
water supply system for protection against backflow
shall be maintained in good worldng condition by tlae
person or persons having coiitrol of such devices or
assemblies. Such devices or assemblies shall be tested
at tlie time of installation, repair, or relocation and at
least on an annual schedule tliereafter, or more often
when required by tlie AutlTority Haviiig Jurisdiction.
If found to be defective or inoperative, tlie device or
assembly shall be repaired or replaced. No device or
assembly shall be removed from use or relocated or
other device or assembly substituted, without the
approval of tlie Autliority Having Jurisdiction.
Testing shall be performed by a certified
backflow assembly tester.
603.2 Backflow Prevention Devices, Assemblies,
and Methods.
603.2.1 Alrgap. The minimum airgap to afford
backflow protection shall be in accordance witli
Table 6-3.
603.2.2 Atmospheric Vacuum Breaker (AVB).
An atmospheric vacuum breaker consists of a
body, a checldng member, and aii atmospheric
openiiig.
603.2.3 Hose Connection Backflow Preventer.
A hose connection backflow preventer consists of
two independent check valves wifli an independent
atmospheric vent between and a means of field
testing and draining.
603.2.4 Double Check Valve Backflow Preven-
tion Assembly (DC). A double check valve
backflow prevention assembly consists of
two independently acting internally loaded clieck
valves, four properly located test cocks, and
two isolation valves.
603.2.5 Pressure Vacuum Breaker Backflow
Prevention Assembly (PVB). A pressure
vacuum breaker backflow prevention assembly
consists of a loaded air inlet valve, an internally
loaded check valve, two (2) properly located test
cocks, and two (2) isolation valves. This device
shall be installed indoors only if provisions for
spillage are provided.
603.2.6 Pressure Vacuum Breaker Spill-
Resistant-Type Backflow Prevention
Assembly (SVB). A pressure-type vacuum
breaker baclcflow prevention assembly consists
of one (1) check valve force-loaded closed and
"an air inlet vent valve force-loaded open to
atmosphere, positioned downstream of the check
valve, and located between and including two
(2) tightly closing shutoff valves and test cocks.
603.2.7 Reduced-Pressure Principle Backflow
Prevention Assembly (RP). A reduced-pressure
priiiciple backflow prevention assembly consists
of two independently acting internally loaded
check valves, a differential pressure-relief valve,
four properly located test cocks, and two
isolation valves.
603.3 General Requirements.
603.3.1 All assemblies shall conform to listed
standards and be acceptable to the Authority
Having Jurisdiction, with jurisdiction over the
selection and installation of baclcflow prevention
assemblies.
603.3.2 Where more than one (1) backflow
prevention valve is installed on a single premise,
and tlie valves are installed in one location, each
separate valve shall be permanently identified
by the permittee in a manner satisfactory to tlie
Authority Having Jurisdiction.
603.3.3 The premise owner or responsible
person shall have the backflow prevention
assembly tested by a certified backflow assembly
tester at the time of installation, repair, or
relocation and at least on an annual schedule
fliereafter, or more often when required by the
Authority Having Jurisdiction. The periodic
testing shall be performed in accordance with
the procedures referenced in Table 14-1 by a
tester qualified in accordance witli tliose standards!
603.3.4 Access and clearance shall be provided
for the required testing, maintenance, and repair.
Access and clearance shall require a minimum of
one (1) foot (305 mm) between the lowest
portion of the assembly and grade, floor, or
platform. Installations elevated more than five
(5) feet (1524 mm) above the floor or grade shall
be provided with a permanent platform capable
of supporting a tester or maintenance person.
603.3.5 Direct connections between potable
water piping and sewer-connected wastes shall
not exist under any condition with or without
backflow protection. Where potable water is
discharged to the drainage system, it shall be by
means of an approved airgap of two (2) pipe
diameters of flie supply inlet, but in no case shall
the gap be less than one (1) inch (25 mm).
Connection may be made to the inlet side of a
trap provided that an approved vacuum breaker
is installed not less tlian six (6) inches (152 mm),
or the distance according to the device's listing,
above the flood-level rim of such trapped
fixture, so fliat at no time will any such device
be subjected to any back-pressure.
603.3.6 Backflow preventers for hot water over
110°F (43.3°C) shall be a type designed to op-
erate at temperatures of 110°F (43.3°C) or more
113
603.3 - 603.4
2007 CALIFORNIA PLUMBING CODE
without rendering any portion of the assembly
inoperative.
603.3.7 Fixtures, appliances, or appurtenances
with integral backflow preventers or integral
airgaps manufactured as a rmit shall be installed
in accordance with their listing requirements
and the manufacturers' instructions.
603.3.8 In cold climate areas, backflow
assemblies and devices shall be protected from
freezing with an outdoor enclosure or by a
method acceptable to the Authority Having
Jurisdiction.
603.3.9 All drain lines serving backflow devices
or assemblies shall be sized in accordance with
the discharge rates of the manufacturers' flow
charts of such devices or assemblies.
603.3.10 Design and Installation of Plumbing
Fixtures. Plumbing fixtitres shall be installed
such that fixture fittings, complying with the
backflow prevention requirements of ASME
A112.18.1, do not have these requirements
compromised by the designated fixture fitting
motmting surface.
603.4 Specific Requirements.
603.4.1 Water closet and urinal flushometer
valves shall be equipped with an atmospheric
vacuum breaker. The vacuum breaker shall be
installed on the discharge side of the flushometer
valve with the critical level at least six (6) inches
(152 mm), or the distance according to its listing,
above the overflow rim of a water closet bowl or
the highest part of a urinal.
603.4.2 Water closet and urinal tanks shall be
equipped with a ballcock. The ballcock shall be
installed with the critical level at least one (1)
inch (25.4 mm) above the full opening of the
overflow pipe. In cases where the baUcock has no
hush tube, the bottom of the water supply inlet
shall be installed one (1) inch (25.4 mm) above
the full opening of the overflow pipe.
603.4.3 Water closet flushometer tanks shall be
protected against backflow by an approved
backflow prevention assembly, device, or method.
603.4.4 Heat Exchiangers.
603.4.4.1 Heat exchangers used for heat
transfer, heat recovery, or solar heating shall
protect the potable water system from being
contaminated by the heat transfer medium.
Single-wall heat exchangers used in indirect-
fired water heaters shall meet the require-
ments of Section 506.4.2. Double-wall heat
exchangers shall separate the potable water
from the heat-tiansfer mediiim by providing
a space between the two walls that is vented
to me atmosphere.
603.4.5 Water supply inlets to tanks, vats,
sumps, swimming pools, and other receptors
shall be protected by one of the following
means:
(1) An approved airgap.
(2) A listed vacuum breaker installed on the
discharge side of the last valve with the
critical level not less than six (6) inches (152
mm) or in accordance Tvith its listing.
(3) A backflow preventer suitable for the
contamination or pollution, installed in
accordance with the requirements for that
type of device or assembly as set forth in
this chapter.
603.4.6 Protection from Lawn Sprinklers and
Irrigation Systems.
603.4.6.1 Potable water supplies to systems
having no pumps or connections for pumping
equipment, and no chemical injection or
provisions for chemical injection, shall be
protected from backflow by one of the
following devices:
(1) Atmospheric vacuum breaker
(2) Pressure vacuum breaker
(3) Spill-resistant pressure vacuum breaker
(4) Reduced-pressure bacl<flow preventer
603.4.6.2 Where sprinkler and irrigation
systems have pumps, coimections for pumping
equipment, or auxiliary air tanks, or are
otherwise capable of creating back-pressure, the
potable water supply shall be protected by
the following type of device if the backflow
device is located upstream from the source
of back-pressure:
(1) Reduced-pressure bacldlow preventer
603.4.6.3 Where systems have a backflow
device installed downstieam from a potable
water supply pimip or a potable water supply
pump connection, the device shall be one of
the following:
(1) Atmospheric vacuum breaker
(2) Pressure vacuum breaker
(3) Spill-resistant pressure vacuum breaker
(4) Reduced-pressure backflow preventer
603.4.6.4 Where systems include a chemical
injector or any provisions for chemical injection,
the potable water supply shall be protected
by the following:
(1 ) Reduced-pressxjre backflow preventer
603.4.7 Potaible water outlets with hose
attachments, other than water heater drains,
boiler drains, and clothes washer cormections,
shall be protected by a nonremovable hose-bibb-
type backflow preventer, a nonremovable hose
114
WATER SUPPLY AND DISTRIBUTION
603.4
bibb-type vacuum breaker, or by an atmospheric
vacuum breaker installed at least six (6) inches
(152 mm) above the highest point of usage
located on the discharge side of die last valve. In
climates where freezing temperatures occur, a
listed self-draining frost-proof hose bibb with an
integral backflow preventer or vacuum breaker
shall be used.
603.4.8 Water-cooled compressors, degreasers,
or any other water-cooled equipment shall be
protected by a backflow preventer installed iii
accordance witli tlie reqtiirements of tills diapter.
Note:
Water-cooled equipment that produces back-
pressure shall be equipped witli the appropriate
protection.
603.4.9 Water inlets to water-supplied
aspirators shall be equipped with a vacuum
breaker installed in accordance with its listing
requirements and this chapter. The discharge
shall drain through an airgap. When the
tailpiece of a fixture to receive the discharge of
an aspirator is used, the airgap shall be located
above tlie flood-level rim of tlie fixture.
603.4-10 Potable water makeup comiections to
steam or hot water boilers shall be provided
with a listed baclcflow protection assembly.
603.4.11 Nonpotable Water Piping. In cases
where it is impractical to correct individual
cross-connections on tlie domestic waterline, the
Hne supplying sudi outiets shall be considered a
nonpotable water line. No druiking or domestic
water outlets shall be connected to the non-
potable waterline. Whenever possible, all
portions of tlie nonpotable waterlme shall be ex-
posed, and all exposed portions shall be properly
identified in a manner satisfactory to the
Audiority Having Jurisdiction. Eacli outlet on tlie
nonpotable waterline that may be used for
drinking or domestic purposes shall be posted:
"CAUTION: NONPOTABLE WATER, DO NOT
DRINK." [HCD 1 & HCD2]An internationl symbol
of a glass in a circle with a slash through it shall he
■provided similar to thai provided in Figure 6-1.
603.4.12 Potable water supply to carbonators
shall be protected by eitlier an airgap or a vented
backflow preventer for carbonated beverage
dispensers installed within the carbonated
beverage dispenser. The carbonated beverage
dispenser shall bear the label of an approved
testing agency, certif5diig and attesting that sudi
equipment has been tested and inspected and
meets the requirements of the approved
applicable standard. Carbonated beverage
dispensers without an approved internal airgap
or vented backflow preventer for carbonated
beverage dispensers and carbonated beverage
dispensing systems shall have tiie water supply
protected with a vented baclcflow preventer for
carbonated beverage dispensers.
603.4.13 Water Treatment Units. Reverse osmosis
drinking water treatment units shall meet the
requirements of the appropriate standards
referenced in Table 14-1. Waste or discharge
from reverse osmosis or other types of water
treatment units shall enter tlie drainage system
tlirough an airgap.
603.4.14 Backflow preventers shall not be
located in any area containing fumes that are
toxic, poisonous, or corrosive.
603.4.15 Deck-mounted or equipment-mounted
vacuum breakers shall be installed in accordance
with their listing and the manufacturers'
instructions, witii the critical level not less tliaii
one (1) indi (25.4 mm) above tiie flood-level rim.
603.4.16 Protection from Fire Systems.
Note: Tire Protection Systems has not been adopted
by the State Fire Marshal. This section cannot be
adopted or enforced pursuant to California Health
and Safety Code 13114.7(a), which is being cited for
reference.
California Health and Safety Code 13114.7
(a) For the purposes of this section the following are
definitions of class I and class II systems;
(1) American Water Works Association
(A.W.W.A) Manual No. M-14 class 1
— Automatic fire sprinkler systems with
direct connection from public water mains
only; no pumps, tanks, or reservoirs; no
physical connection from other water
supplies; no antifreeze or additives of any
kind; and all sprinkler drains discharging to
the atviosphere or other safe outlets.
(2) American Water Works Association
(A.W.W.A) Manual No. M-14 class 2
■ — Automatic fire sprinkler systems which
are the same as class 1, except that booster
pumps may be installed in the connections
from the street mains.
(b) Automatic fire sprinkler systems described in
subdivision (a) shall not required any backflow
protection equipment at the service connection
other than required by standards for those
systems contained in the publication of the
National Fire Protection Association entitled
"Installation of Sprinkler Systems" (NFPA
Pamphlet No. 13, 1980 edition).
603.4.16.1 Except as provided under
Sections 603.4.16.2 and 603.4.16.3, potable
115
Table 6-4 - 603.4
TABLE 6-4'
2007 CALIFORNIA PLUMBING CODE
Material
Water Distribution
Building Supply Pipe
Pipe
and Fittings
and Fittings
Hot
Cold
Asbestos - Cement
X
Brass
X
X
X
Copper
X
X
X
Cast Iron
X
X
X
CPVC
X
X
X
Galvanized Malleable Iron
X
X
X
Galvanized Wrought Iron
X
X
X
Galvanized Steel
X
X
X
PE
X
PE-AL-PE
X
X
X
PEX'
X
X
X
PEX-AL-PEX'
X
X
X
PVC
X
^ IBSC, DSA/SS & HCD] The use ofPEX and FEX-AL-PEX in potable water supply systems is not adopted for applications under the authority of the California Building
Standards Commission and the Division of State Architect - Structural Safety and the Department of Housing and Community Development.
water supplies to fire protection systems
that are normally under pressure, including
but not limited to standpipes and automatic
sprinkler systems, except in one- or two-
family residential sprinkler systems, piped in
materials approved for potable water
distribution systems shall be protected from
back-pressure and back-siphonage by one of
the following testable devices:
(1) Double check valve assembly
(2) Double check detector assembly
(3) Reduced pressure backflow preventer
(4) Reduced pressure detector assembly
Potable water supplies to fire protection
systems that are not normally under
pressure shall be protected from backflow
and shall meet the requirements of the
appropriate standards referenced in Table 14-1.
603.4.16.2 Where fire protection systems
supplied from a potable water system
include a fire department (siamese) connec-
tion that is located less than seventeen
hundred (1,700) feet (518.2 m) from a non-
potable water source that could be used by
the fire department as a secondary water
supply, the potable water supply shall be
protected by one of the following:
(1) Reduced pressure backflow preventor
(2) Reduced pressm-e detector assembly
Note:
Nonpotable water sources include fire
department vehicles carrying water of
questionable quality or water that is tieated
with antifreeze, corrosion inhibitors, or
extinguishing agents.
603.4.16.3 Where antifreeze, corrosion
inhibitors, or other chemicals are added to a
fire protection system supplied from a
potable water supply, the potable water
system shall be protected by one of the
following:
(1) Reduced pressure backflow preventer
(2) Reduced pressure detector assembly
603.4.16.4 Whenever a backflow device is
installed in the potable water supply to a
fire protection system, the hydraulic design
of the system shall account for the pressure
drop through the backflow device. If such
devices are retrofitted for an existing fire
protection system, the hydraulics of the
sprinkler system design shall be checked to
verify that there will be sufficient water
pressure available for satisfactory operation
of the fire sprinklers.
603.4.16.5 Residential Sprinlder Systems.
When residential sprinkler systems are
installed using the potable water system,
they shall be installed in accordance with
the standards Hsted in Table 14-1.
603.4.17 Special Equipment, Water Supply
Protection. Vacuum breakers for washer-hose
bedpans shall be located not less than five (5)
feet (1,524 mm) above the floor. Hose connections
in health care or laboratory areas shall not be less
than six (6) feet (1,829 mm) above the floor.
603.4.18 Portable cleaning equipment, dental
116
WATER SUPPLY AND DISTRIBUTION
603.4-604.1
( ")
vacuum pumps, and chemical dispensers shall
be protected from backflow by an airgap, an
atmospheric vacuum breaker, a spill-proof
vacuum breaker, or a reduced pressure priiiciple
backflow preventer.
603.4.19 Water Heater Connectors. Flexible
metallic water heater connectors or reinforced
flexible water heater connectors connecting
water heaters to the piping system shall be in
compliance with the appropriate standards
listed in Table 14-1.
603.4.20 Combination stop-and-waste valves
or cocks shall not be installed tmdergroimd.
603.4.21 Pure Water Process Systems. The
water supply to a pure water process system,
such as dialysis water systems, semiconductor
washing systems, and similar process piping
systems, shall be protected from back-pressure
and back-siphonage by a reduced-pressure
principle backflow preventer.
603.4.21 .1 Dialysis Water Systems. The
individual connections of the dialysis
related equipment to tlie dialysis pure water
system do not require additional baclcflow
protection.
603.4.22 Plumbing Fixture Fittings. Plumbing
fixture fittings witli integral backflow protection
shall comply witli ASME A112.18.1.
604.0 l\/iaterials.
604.1 All pipe, tube, and fittiiigs carrying water used
in potable water systems intended to supply drinking
water shall meet tlie requirements of NSF 61 as found
in Table 14-1. All materials used iiT tlie water supply
system, except valves and similar devices, shall be of
a like material, except where oflierwise approved by
tlie Authority Having Jurisdiction.
Materials for building water piping and building
supply piping shall be in accordance witli Table 6-4
and the standards in Table 14-1.
Exceptions:
(1) [OSHPD 1,2, 3 & 4] Use of CPVC is not
permitted for applications under authority of the
Office of Statewide Health Planning and
Development.
(2) [OSHPD 1,2, 3 & 4] Use ofPEX piping is not
permitted for applications under the authority of
- - - the Office of Statewide Health Planning and
:.i<:>ii ..iDevelopment, i -
(3) [OSHPD 1, 2, 3 & 4] Use of PEX-AL-PEX
piping is not permitted for applications under
the authority of the Office of Statewide Health
Planning and Development.
(4) [AGR, DHS] Use ofPEX piping is not adopted
for applications under the authority of the
Department of Health Services and the
Department of Pood and Agriculture.
604.1.1 Local Authority to Approve CPVC
Pipe Within Residential Buildings Under
Specified Conditions
[HCD 1 & HCD 2] The local responsible building
official of any city, county, or city and county, in
accordance with the procedures set forth in Chapter 3
sliall authorize by permit the use of CPVC for hot and
cold water distribution systems within the interior of
residential buildings provided all of the following
conditions are satisfied:
(a) Permit Conditions. Any building permit
issued pursuant to Section 604.1.1 shall be
conditioned on compliance with the mitigation
measures set forth in this section.
(b) Approved Materials. Only CPVC plumbing
material listed as an approved material and
installed in accordance with this code may be
used.
(c) Installation and Use. Any installation and use
of CPVC plumbing material pursuant to this
section shall comply with all applicable
requirements of this code and Section 301.0 of
Appendix I of this code. Installation Standard for
CPVC Solvent Cemented Hot and Cold Water
Distribution Systems, lAPMO IS 20-2005.
(d) Certification of Compliance. Prior to issuing
a building permit pursuant to Section 604.1.1,
the building official shall require as part of the
permitting process that the contractor, or the
appropriate plumbing subcontractors, provide
written certification: (1) that is required in
subdivision (e), and (2) that he or she will
comply with the flushing procedures and worker
safety measures set forth in Section 301.0 of
Appendix I of this code. Installation Standard for
CPVC Solvent Cemented Hot and Cold Water
Distribution Systems, lAPMO IS 20-2005.
(e) Worker Safety. Any contractor applying for a
building permit that includes the use of CPVC
plumbing materials authorized pursuant to this
section shall include in the permit application a
signed written certification stating that:
(1) They are aware of the health and safety
hazards associated with CPVC plumbing
installations;
(2) They have included in their Injury and
Illness Prevention Plan tlte hazards associated
with CPVC plumbing pipe installations; and
117
604.1 -604.13
2007 CALIFORNIA PLUMBING CODE
(3) The worker safety training elements of their
Injury and Illness Prevention Plan meet the
Department of Industrial Relation's
guidelines.
(f) Findings of Compliance. The building official
shall not give final -permit approval of any CPVC
plumbing materials installed pursuant to Section
604.1.1 unless he or she finds that the material
has been installed in compliance with the
requirements of this code and that the installer
has complied with the requirements in Section
1.2.1 of Appendix I of this code, Installation
Standards for CPVC Solvent Cemented Hot and
Cold Water Distribution Systems, lAPMO IS
20-2005.
(g) Penalties. Any contractor or subcontractor
found to have failed to comply with the
ventilation, glove or flushing requirements of
Section 1.2.2 of Appendix I of this code,
Installation Standards for CPVC Solvent
Cemented Hot and Cold Water Distribution
Systems, lAPMO IS 20-2005 shall be subject to
the penalties in Health and Safety Code,
Division 13, Part 1.5, Chapter 6 (Section 17995
et. seq.). In addition, if during the conduct of any
building inspection the building official finds
that the ventilation and glove requirements of
Section 1.2.2 of Appendix I of this code, "Special
Requirements for CPVC Installation within
Residential Buildings," are being violated, such
building officials shall cite the contractor or
subcontractor for that violation.
604.2 Copper tube for water piping shall have a
weight of not less than Type L.
Exception: Type M copper tubing may be used
for water piping when piping is aboveground
in, or on, a building or undergrotind outside of
structures.
604.3 All hard-drawn copper tubing for water supply
and distribution in addition to the required incised
marking, shall be marked in accordance with ASTM
B 88 Seamless Copper Water Tube as listed in Table 14-
1. The colors shall be: Type K, green; Type L, blue;
Type M, red.
604.4 Listed flexible copper water connectors shall be
installed in readily accessible locations, unless
otherwise listed.
604.5 Cast-iron fittings up to and including two (2)
inches (51 mm) in size, when used in connection
with potable water piping, shall be galvanized.
604.6 All malleable iron water fittings shall be
galvanized.
604.7 Piping and tubing that has previously been used
for any purpose other than for potable water systems
shall not be used.
604.8 Approved plastic materials may be used in
water service piping, provided that where metal
water service piping is used for electrical grounding
purposes, replacement piping therefore shall be of
like materials.
Exception: Where a grounding system acceptable
to the Authority Having Jurisdiction is installed,
inspected, and approved, metallic pipe may be
replaced with nonmetalUc pipe.
604.9 Solder shall conform to the requirements of
Section 316.1.3.
604.10 Water pipe and fittings with a lead content
which exceeds eight (8) percent shall be prohibited in
piping systems used to convey potable water.
Note: On or after January 1, 2010, see Section 116875 of
the Health and Safety Code for the lead content of pipes,
pipe or plumbing fittings, or fixtures intended to convey or
dispense water for human consumption.
604.11 PEX. [Not adopted by BSC, HCD, DSA/SS,
DHS, AGR & OSHPD 1, 2, 3 & 4] Cross-linked
polyethylene (PEX) tubing shall be marked with the
appropriate standard designation(s) listed in Table 14-
1 for which the tubing has been approved. PEX tubing
shall be installed in compliance with the provisions of
this section.
604.11.1 PEX Fittings. [Not adopted by BSC,
HCD, DSA/SS, DHS, AGR & OSHPD 1,2,3& 4]
Metal insert fittings, metal compression fittings,
and cold expansion fittings used with PEX
tubing shall be manufactured to and marked in
accordance with the standards for the fittings in
Table 14-1.
604.11.2 Water Heater Connections. [Not
adopted by BSC, HCD, DSA/SS, DHS, AGR &
OSHPD 1,2, 3 & 4] PEX tubing shall not be
installed within the first eighteen (18) inches (457
mm) of piping connected to a water heater.
604.12 Flexible Corrugated Connectors. Flexible
corrugated connectors of copper or stainless steel
shall be Umited to the following connector lengths:
Water Heater Connectors - twenty-four (24)
inches (609 mm).
Fixture Connectors - thirty (30) inches (762 mm).
Washing Machine Connectors - seventy-two
(72) inches (1827 mm).
Dishwasher and Icemalcer Connectors - one
hundred twenty (120) inches (3048 mm).
604.13 PEX-AL-PEX and PE-AL-PE. Crosslinked
polyethylene-aluminum-crosslinked polyethylene
(PEX-AL-PEX) and polyethylene-aluminum-
118
WATER SUPPLY AND DISTRIBUTION
604.13-606.1
polyethylene (PE-AL-PE) composite pipe shall be
marked with the appropriate standard designations
listed in Table 14-1 for which the piping has been
listed or approved. PEX-AL-PEX and PE-AL-PE
piping shall be installed in compliance with the
provisions of tliis section.
[HCD 1 & HCD 2, BSC, DSA SS] PEX-AL-PEX is not
adopted for use in potable water supply and distribution
systems.
Exception: [OSHPD 1,2, 3 & 4] Use of PEX-AL-
PEX piping is not permitted for applications under
the authority of the Office of Statewide Health
Planning and Development.
604.13.1 PEX-AL-PEX and PE-AL-PE. Fittings
used with PEX-AL-PEX and PE-AL-PE piping
shall be rnanufactured to and marked in
accordance witli the standard for the fittings in
Table 14-1.
[HCD 1 & HCD 2, BSC, DSA SS] PEX-AL-PEX
is not adopted for use in potable water supply and
distribution systems.
Exception: [OSHPD 1,2, 3 & 4] Use of PEX-AL-
PEX piping is not permitted for applications under
the authority of the Office of Statewide Health
Planning and Development.
604.13.2 Water Heater Connections. PEX-AL-
PEX or PE-AL-PE tubing shall not be installed
witliin the first eighteen inches (18) (457 mm) of
piping connected to a water heater.
[HCD 1 & HCD 2, BSC, DSA SS] PEX-AL-PEX
is not adopted for use in potable water supply and
distribution systems.
Exception: [OSHPD 1, 2, 3 & 4] Use of PEX-AL-
PEX piping is not permitted for applications under
the authority of the Office of Statewide Health
Planning and Development.
604.14 Water Heater Connectors. Flexible metallic
water heater coraiectors or reinforced flexible water
heater connectors connecting water heating to the
piping system shall be in compliance with the
appropriate standards listed in Table 14-1.
shall be equipped with a Separate fuHway valve to eadi
building, so arranged that the water supply can be
turned on or off to any individual or separate building
provided; however, that supply piping to a single-
family residence aiid building accessory tliereto may be
controlled on one valve. Sucli shutoff valves shall be
accessible at all times. A fullway valve shall be installed
on die disdiarge piping from water supply tanks at or
near die taiilc A fullway valve shall be installed on die
cold water supply pipe to each water heater at or near
the water heater.
605.3 In multidwelling units, one (1) or more shutoff
valves shall be provided in each dwelling unit so
that the water supply to any plumbing fixture or
group of fixtures in diat dwelling unit can be shut off
without stopping water supply to fixtures in other
dwelling units. These valves shall be accessible in the
dwelling unit that they control.
605.4 All valves used to control two (2) or more
openings shall be fullway gate valves, ball valves, or
other approved valves designed and approved for
die service intended.
605.5 A control valve shall be installed immediately
ahead of each water-supplied appliance and
immediately ahead of each slip joint or appliance
supply.
Parallel water distribution systems shall provide
a control valve either immediately ahead of each
fixture being supplied or installed at the manifold
and shall be identified with the fixture being
supplied.
605.6 All required shutoff or control valves shall be
accessible.
605.7 A single conti-ol valve shall be installed on a
water supply line ahead of any automatic metermg
valve diat suppUes a battery of fixtures.
605.8 [For OSHPD 1, 2&4] Each riser or branch shall
be provided with an accessible sectionalizing valve in hot-
and cold-water systems to permit servicing or replacement
of piping or equipment. Stop valves shall be provided at
eachfixture.
605.0 Valves.
605.1 Valves up to and including two (2) uidies (51
mm) in size shall be brass or other approved
material. Sizes over two (2) inches (51 mm) may have
cast-iron or brass bodies. Each gate of ball valve shall
be a fullway type with working parts of non-
corrosive material.
605.2 A fullway valve controlUng all outlets shall be
installed on die discharge side of each water meter
and on eadi unmetered water supply. Water pipiiig
supplying more tiian one building on any one premises
606.0 Joints and Connections.
606.1 Types of Joints.
606.1.1 Flared Joints. Flared joints for soft
copper water tubing shall be made widi fittings
meeting approved standards. The tubing shall
be reamed to die fuU bore, resized to round, and
expanded with a proper flaring tool.
606.1.2 Mechanical Joints. Mechanical joints
for cast-iron water pipe shall conform to
nationally recognized standards.
606.1.3 Meclianically Formed Tee Fittings.
119
606.1-608.3
2007 CALIFORNIA PLUMBING CODE
Mechanically extracted collars shall be formed in
a continuous operation consisting of drilling a
pilot hole and drawing out the tube surface to
form a collar having a height not less than three
(3) times the thickness of the branch tube wall.
The branch tube shall be notched to conform
with the inner curve of the run tube and shall have
two (2) dimple /depth stops to ensure that
penetration of the branch tube into the collar is of
sufficient depth for brazing and that the branch
tube does not obstruct the flow in the main line
tube. Dimple /depth stops shall be in line with the
nm of the tube. The second dimple shall be one
quarter (1/4) inch (6.35 mm) above the first and
shall serve as a visual point of inspection.
All joints shall be brazed in accordance with
Section 316.1.7. Soldered joints shall not be
allowed.
606.2 Use of Joints.
606.2.1 Copper Water Tube. Joints in copper
tubing shall be made by the appropriate use of
approved fittings properly soldered or brazed
together as provided in Section 316.1.3 or 316.1.7
or by means of approved flared or compression
fittings in Section 606.1.1 or 316.1.5. Solder and
soldering flux shall conform to the requirements
of Section 316.1.3. Mechanically formed tee
fittings shall be made by brazing only and shall
conform to the requirements of Section 316.1.7.
606.2.2 Plastic Fittings. Female PVC screwed
fittings for water piping shall be used with
plastic male fittings and plastic male threads only.
606.2.3 Slip Joints. In water piping, slip joints
may be used only on the exposed fixture supply.
606.2.4 PVC Pipe
606.2.4.1 [For DSA/SS, OSHPD 1,2,3& 4]
Joints in PVC pipe shall he made as provided in
Section 316.1.6, UPC.
607.0 Gravity Supply Tanks.
Gravity tanks for potable water shall be tightly
covered, and have not less than a sixteen (16) square-
inch (10,323 mm^) overflow screened with copper
screen having not less than fourteen (14) nor more
than eighteen (18) openings per linear inch (25.4 mm).
608.0 Water Pressure, Pressure Regulators,
Pressure Relief Valves, and Vacuum Relief Valves.
608.1 Inadequate Water Pressure. Whenever the
water pressure in the main or other source of supply
wiU not provide a residual water pressure of at least
fifteen (15) potmds per square indi (103.4 kPa), after
allowing for friction and other pressure losses, a tank
and a pump or other means that will provide said
fifteen (15) pound (103.4 kPa) pressure shall be
installed. Whenever fixtures and /or fixture fittings
are installed that require residual pressure higher
than fifteen (15) potmds per square inch (103.4 kPa),
that minimum residual pressure shall be provided.
608.2 Excessive Water Pressure. Where static
water pressure in the water supply piping is in
excess of eighty (80) pounds per square inch (552
kPa), an approved-type pressture regulator preceded
by an adequate strainer shall be installed and the
static pressure reduced to eighty (80) pounds per
square inch (552 kPa) or less. Such regulator(s) shall
control the pressure to all water outlets in the
building unless otherwise approved by the
Authority Having Jurisdiction. Each such regulator
and strainer shall be accessibly located abovegrotmd
or in a vault equipped with a properly sized and
sloped bore-sighted drain to daylight, shall be
protected from freezing, and shall have the strainer
readily accessible for cleaning without removing the
regulator or strainer body or disconnecting the
supply piping. All pipe size determinations shall be
based on eighty (80) percent of the reduced pressure
when using Table 6-6.
608.3 Any water system provided with a check
valve, backflow preventer, or any other normally
closed device that prevents dissipation of building
pressure back into the water main shall be provided
with an approved, listed, and adequately sized
expansion tank or other approved device having a
similar function to control thermal expansion. Such
expansion tank or other approved device shall be
installed on the building side of the check valve,
backflow preventer, or other device and shall be
sized and installed in accordance with the manu-
facturer's recommendation.
Any water system containing storage water
Sizing IVIethod
Example Using TABLE 6-7
Public Use Fixtures
LAV LAV UR UR WC WC
1 1 1 1 1 1
AV LAV UR UR WC WC
1 1 1 1 1 1
F E D C B A
G H 1 J K L
LAV UR WC LAV UR WC
111111
--*
S R Q P N
120
WATER SUPPLY AND DISTRIBUTION
608.3 - 609.4
heating equipment shall be provided with an
approved, listed, adequately sized combination
pressure and temperature relief valve, except for
listed nonstorage instantaneous heaters having an
inside diameter of not more tlian three (3) inches (80
mm). Each such approved combination temperature
and pressure relief valve shall be installed on the
water-heating device in an approved location based
on its listing requirements and the manufacturer's
instructions. Each such combination temperature
and pressure relief valve shall be provided with a
drain as required in Section 608.5.
608.4 Each pressure relief valve shall be an
approved automatic type witli dram, and each such
relief valve shall be set at a pressure of not more than
oiie hundred fifty (150) pounds per square inch (1035
kPa). No shutoff valve shall be installed between tlie
relief valve and the system or in the drain line.
608.5 Relief valves located inside a building shall be
provided with a drain, not smaller than the relief
valve outlet, of galvanized steel, hard-drawiT copper
piping and fittings, CPVC, or listed relief valve drain
tube with fittings that will not reduce the internal
bore of the pipe or tubing (straight lengths as
opposed to coils) and shall extend from the valve to
tlie outside of the building, with tlie end of tlie pipe
not more tlian two (2) feet (610 mm) nor less tlian six
(6) inches (152 mm) above tlie ground or tlie flood
level of tlie area receiving the discliarge and pointing
downward. Such drains may terminate at other
approved locations. Relief valve drains shall not
terminate in a building's crawl space. No part of
such drain pipe shall be trapped or subject to
freezing. The terminal end of tlie drain pipe shall not
be direaded.
608.6 Any water-heating device connected to a
separate storage tank and having valves between
said heater and tank shall be provided with an
approved water pressure relief valve.
608.7 Vacuum Relief Valves. Where a hot-water
storage tank or an indirect water heater is located at
an elevation above the fixture outlets in the hot-
water system, a vacuum relief valve shall be installed
on the storage tank or heater.
609.0 Installation, Testing, Unions, and Location.
609.1 Installation. All water piping shall be
adequately supported in accordance with Section
314.0. Burred ends shall be reamed to the full bore of
tlie pipe or tube. Changes ill direction shall be made
by the appropriate use of fittings, except that
changes in direction in copper tubing may be made
with bends, provided that sucli bends are made with
bending equipment that does not deform or create a
loss in the cross-sectional area of the tubing. Changes
in direction are allowed with flexible pipe and
tubing without fittings in accordance with the
manufacturer's installation instructions. Provisions
shall be made for expansion in hot-water piping. All
piping, equipment, appurtenances/ and devices shall
be installed in a workmanlike manner in conformity
witli the provisions and intent of tlie code. All water
service yard piping shall be at least twelve (12)
inches (305 mm) below tlie average local frost depth.
The minimum cover shall be twelve (12) inches (305
mm) below finish grade.
609.2 Water pipes shall not be run or laid in the
same trench as building sewer or drainage piping
constructed of clay or materials that are not
approved for use within a building unless both of
tlie followmg conditions are met:
609.2.1 The bottom of the water pipe, at all
points, shall be at least twelve (12) inches (305
mm) above the top of the sewer or drain line.
609.2.2 The water pipe shall be placed on a
solid shelf excavated at one side of tlie common
trench widi a minimum clear horizontal distance
of at least twelve (12) mclies (305 mm) from tlie
sewer or drain line.
Water pipes crossing sewer or drainage
piping constructed of clay or materials that are
not approved for use within a building shall be
laid a minimum of twelve (12) inches (305 mm)
above the sewer or drain pipe.
609.3 Water piping installed witliin a building and
in or under a concrete floor slab resting on the
ground shall be installed in accordance with the
followmg requirements:
609.3.1 Ferrous piping shall have a protective
coating of an approved type, machine applied
and conforming to recognized standards. Field
wrapping shall provide equivalent protection
and shall be restricted to those short sections
and fittings necessarily stripped for threading.
Zinc coating (galvanizing) shall not be deemed
adequate protection for piping or fittings.
Approved nonferrous piping shall not be
required to be wrapped.
609.3.2 Copper tubing shall be installed witliout
joints where possible. Wliere jomts are permitted,
they shall be brazed, and fittings shall be
wrought copper.
Note: For the purpose of fliis section, "witliin tlie
building" shall mean within fiie fixed limits of
tlie building fomidation.
609.4 Testing. Upon completion of a section or of
the entire hot and cold water supply system, it shall
be tested and proved tight under a water pressure
not less tlian die working pressure under which it is
121
609.4-610.1
2007 CALIFORNIA PLUMBING CODE
to be used. The water used for tests shall be obtained
from a potable source of supply. Except for plastic
piping, a fifty (50) pound-per-square-inch (344.5 kPa)
air pressure may be substituted for the water test. In
either method of test, the piping shaU withstand the
test without leaking for a period of not less than
fifteen (15) minutes.
609.5 Unions. Unions shall be installed in the water
supply piping within twelve (12) inches (305 mm) of
regulating equipment, water heating, conditioning
tanks, and similar equipment that may require
service by removal or replacement in a manner that
wiU facilitate its ready removal.
609.6 Location. Except as provided in Section 609.7,
no building supply shall be located in any lot other
than the lot that is the site of the building or
structure served by such building supply.
609.7 Nothing contained in this code shall be
construed to prohibit the use of all or part of an
abutting lot to:
609.7.1 Provide access to connect a building
supply to an available public water service when
proper cause and legal easement not in violation
of other requirements have been first established
to the satisfaction of the Authority Having
Jurisdiction.
609.7.2 Provide additional space for a building
supply when proper cause, transfer of owner-
ship, or change of boundary not in violation of
other requirements have been first established to
the satisfaction of the Authority Having
Jurisdiction. The instrument recording such
action shall constitute an agreement with the
Authority Having Jurisdiction, which shall
dearly state and show that the areas so joined or
used shall be maintained as a unit during the
time they are so used. Such an agreement shall
be recorded ki the office of the County Recorder
as a part of the conditions of ownership of said
properties, and shall be binding on all heirs,
successors, and assigns to such properties. A
copy of the instrument recording such pro-
ceedings shall be filed with the Authority
Having Jurisdiction.
609.8 Low-Pressure Cutoff Required on Booster
Pumps for Water Distribution Systems. When a
booster pump - excluding a fire pump - is connected
to a water service or xmderground water pipe, a low-
pressure cutoff switch on the inlet side of the pump
shall be installed within five (5) feet (1,524 mm) of
the inlet. The cutoff switch shall be set for not less
than ten (10) psi (68.9 kPa). A pressure gauge shall be
installed between the shutoff valve and the ptimp.
609.9 Disinfection of Potable Water System. New
or repaired potable water systems shall be disinfected
prior to use whenever required by the Authority
Having Jurisdiction. [For OSHPD 1,2, 3 & 4] Prior to
utilization of newly constructed or altered -potable water
■piping systems, all ajfected potable water piping shall he
disinfected using procedures prescribed in California
Plumbing Code Sections 609.9.1 through 609.9.4. The
method to be followed shall be that prescribed by the
Health Authority or, in case no method is prescribed
by it, the following:
609.9.1 The pipe system shall be flushed with
clean, potable water until only potable water
appears at the points of outlet.
609.9.2 The system or parts thereof shall be
filled with a water-chlorine solution containing
at least fifty (50) parts per million of chlorine,
and the system or part thereof shall be valved-
off and allowed to stand for twenty-four (24)
hours; or, the system or part thereof shall be
filled with a water-chlorine solution containing at
least two hundred (200) parts per million of
chlorine and allowed to stand for three (3) hours.
609.9.3 Following the allowed standing time,
the system shall be flushed with clean, potable
water until the chlorine residual in the water
coming from the system does not exceed the
chlorine residual in the flushing water.
609.9.4 The procedure shaU be repeated if it is
shown by bacteriological examination made by
an approved agency that contatrunation persists
in the system.
609.10 Water Hammer. [Not adopted by HCD] All
building water supply systems in which quick-acting
valves are installed shall be provided with devices to
absorb the hammer caused by high pressures
resulting from the quick closing of these valves.
These pressure-absorbmg devices shall be approved
mechanical devices. Water pressure-absorbing
devices shall be installed as close as possible to
quick-acting valves.
609.10,1 IWeclianicai Devices. When listed
mechanical devices are used, the manufacturers'
specifications as to location and method of
installation shall be followed.
609.11 [For DSA/SS, OSHPD 1, 2 & 4] Refer to
Title 24, Part 2 of the California Building Code for
seismic anchorage and bracing requirements and
accommodations for building displacements.
610.0 Size of Potable Water Piping.
610.1 The size of each water meter and each
potable water supply pipe from the meter or other
source of supply to the fixture supply branches,
risers, fixtures, connections, outlets, or other uses
shall be based on the total demand and shall be
122
WATER SUPPLY AND DISTRIBUTION
610.1 -610.10
determined according to the raethods and
procedures outlined iii this section. Water pipiiig
systems shall be desigiied to ensure that the
maximum velocities allowed by the code and the
applicable standard are not exceeded.
610.2 Whenever a water filter, water softener
backflow prevention device, or similar device is
installed in any water supply line, the pressure loss
through such devices shall be included in the
pressure loss calculations of the system, and the
water supply pipe and meter shall be adequately
sized to provide for any sucli pressure loss.
No water filter, water softener, backflow
prevention device, or similar device regulated by tliis
code shall be installed in any potable water supply
piping when the installation of such device produces
an excessive pressure drop in any such water supply
piping. In the absence of specific pressure drop
infon-nation, the diameter of the inlet or outlet of any
such device or its connecting piping shall not be less
than tlie diameter of such water distribution piping
to the fixtures served by the device.
All such devices shall be of a type approved by
the Authority Haviiig Jurisdiction and shall be tested
for flow rating and pressure loss by an approved
laboratory or recognized testing agency to standards
consistent with the intent of tliis chapter.
61 0.3 The quantity of water required to be supplied
to every plumbing fixture shall be represented by
fixture units, as shown in Table 6-5. Equivalent
fixture values shown in Table 6-5 include both hot
and cold water demaiid.
61 0.4 Systems witliin the range of Table 6-6 may be
sized from that table or by the method set forth in
Section 610.5.
Listed parallel water distribution systems shall
be installed in. accordance with tlieir listiing, but at no
time shall any portion of the system exceed the
maximum velocities allowed by the code.
61 0.5 Except as provided in Section 610.4, the size of
each water piping system shall be determined in
accordance witli tlie procedm-e set forth in Appendix
A. For alternate methods of sizing water supply
systems, see Appendix L.
610.6 Except where the type of pipe used and the
water characteristics are such that no decrease in
capacity due to lengtli of service (age of system) may
be expected, all friction-loss data shall be obtained
from the "Fairly Rough" or "Rough" charts in
Appendix A of tliis code. Friction or pressure losses
in water meter, valve, and fittings shall be obtained
from the same sources. Pressure losses through
water-treating equipment, backflow prevention
devices, or other flow-restricting devices shall be
computed as required by Section 610.2.
610.7 On any proposed water piping installation
sized usiLig Table 6-6, the following coitditions shall
be determined:
(1) Total number of fixture units as determined
from Table 6-5, Equivalent Fixture Units, for
the fixtures to be installed.
(2) Developed length of supply pipe from meter
to most remote outlet.
(3) Difference in elevation between the meter or
other source of supply and the highest
fixture or outlet.
(4) Pressure ui tlie street main or other source of
supply at the locality where the installation
is to be made.
(5) In localities where there is a fluctuation of
pressure in the main throughout the day,
the water piping system shall be designed
on the basis of the minimum pressure
available.
610.8 Size of Meter and Building Supply Pipe
Using Table 6-6. The size of the meter and the
building supply pipe shall be determined as follows:
(1) Determine the available pressure at the
water meter or other source of supply.
(2) Subtract one-half (1/2) pound per square
inch pressure (3.4 kPa) for each foot (305
mm) of difference in elevation between such
source of supply and the highest water supply
outlet in tlie buUding or on tlie premises.
(3) Use the "pressure range" group within
wliich this pressure wiU fall using Table 6-6.
(4) Select the "length" column that is equal to
or longer tlian tlie required length.
(5) Follow down the column to a fixture unit
value equal to or greater than the total
number of fixture units required by the
installation.
(6) Having located the proper fixture miit value
for the required length, sizes of meter and
building supply pipe as found in the two
left-hand columns shall be applied.
No building supply pipe shall be less
than tliree-quarter (3/4) inch (20 mm) in
diameter.
610.9 Size of Branches. When Table 6-6 is used,
the minimum size of each branch shall be
determined by tlie number of fixture units to be
served by that branch, the total developed length of
the system, and the meter and street service size as
per Section 610.8. No branch piping is required to
be larger in size than that required by Table 6-6 for
the building supply pipe.
610.10 Sizing for Flushometer Valves. When
123
610.10-611.4
2007 CALIFORNIA PLUMBING CODE
using Table 6-6 to size water supply systems serving
flushometer valves, the number of flushometer
fixture units assigned to every section of pipe,
whether branch or main, shall be determined by the
number and category of flushometer valves served
by that section of pipe, in accordance with Table 6-7.
Piping supplying a flushometer valve shall not be
less in size than the valve inlet.
When using Table 6-7 to size water piping, care
must be exercised to assign flushometer fixture imits
based on the number and category of fixtures served.
In the example below, fixture imits assigned to each
section of pipe are computed as follows: Note: Each
capital letter refers to the section of pipe above it,
imless otherwise shown.
A: 1WC = 40F.U.
B: 2WC = 70F.U.
C: 2 WC (70) + 1 UR (20) = 90 F.U.
D: 2 WC (70) + 2 UR (35) = 105 F.U.
E: 2 WC (70) + 2 UR (35) + 1 LAV (1) = 106 F.U.
F: 2 WC (70) + 2 UR (35) + 2 LAV (2) = 107 F.U.
G: 1 LAV = 1 F.U.
H: 2 LAV = 2 F.U.
L 2 LAV (2) + 1UR (20) = 22 F.U.
J: 2 LAV (2)+ 2 UR (35) = 37 F.U.
K: 2 LAV (2) + 2 UR (35) + 1WC (40) = 77 F.U.
L: 2 LAV (2) + 2 UR (35) + 2 WC (70) = 107 F.U.
M: 4 WC (105) + 4 UR (53) + 4 LAV (4) = 162 F.U.
N: 1WC = 40F.U.
O: 1 WC (40) + 1 UR (20) = 60 F.U.
P: 1 WC (40) + 1 UR (20) + 1 LAV (1) = 61 F.U.
Q: 2WC(70) + 1UR(20) + 1LAV(1) = 91F.U.
R: 2 WC (70) + 2 UR (35) + 1 LAV (1) = 106 F.U.
S: 2 WC (70) + 2 UR (35) + 2 LAV (2) = 107 F.U.
T: 6 WC (125) + 6 UR (63) + 6 LAV (6) = 194 F.U.
610.11 Sizing Systems for Flushometer Tan[<s.
The size of branches and mains serving flushometer
tanks shall be consistent with the sizing procedures
for flush tank water closets.
610.12 Sizing for Velocity. Water piping systems
shaU not exceed the maximxim velocities listed in this
section or Appendix A.
610.12.1 Copper Tube Systems. Maximum
velocities in copper and copper alloy tube and
fitting systems shall be limited to a maximum of
eight (8) feet per second (fps) (2.4 mps) in cold
water and five (5) fps in hot water (1.52 mps).
610.12.2 Tubing Systems Using Copper
Alloy Fittings. Maximum velocities through
copper alloy fittings in tubing other than copper
shall be limited to a maximum of eight (8) feet
per secorid (fps) (2.4 mps) in cold water and five
(5) fps in hot water (1.52 mps).
610.13 Exceptions. The provisions of this section
relative to size of water piping shall not apply to the
following:
(1) Water supply piping systems designed in
accordance with recognized engineering
procedures acceptable to the Authority
Having Jurisdiction.
(2) Alteration of or minor additions to existing
installations, provided the Authority Having
Jurisdiction finds that there will be
an adequate supply of water to operate all
fixtures.
(3) Replacement of existing fixtures or
appliances.
(4) Piping that is part of fixture equipment.
(5) Unusual conditions where, in the judgment
of the Authority Having Jurisdiction, an
adequate supply of water is provided to
operate fixtures and equipment.
(6) Nonpotable waterlines as defined in
Sections 601.2.2 and 601.2.3.
(7) The size and material of irrigation water
piping installed outside of any building or
structure and separated from the potable
water supply by means of an approved
airgap or backflow prevention device is not
regulated by this code. The potable water
piping system supplying each such
irrigation system shall be adequately sized
as required elsewhere in this chapter to
deliver the full connected demand of both
the domestic use and the irrigation systems.
611.0 Drinking Water Treatment Units.
611.1 Compliance with Standard. Drinking water
treatment units shall meet the requireinents of the
appropriate standard referenced in Table 14-1.
611.2 Airgap Discharge. Discharge from all
drinking water treatment units shall enter the
drainage system through an airgap or an airgap
device that meets the requirements of the appropriate
standards referenced in Table 14-1.
611.3 Connection Tubing. The tubing to and from
drinking water teeatment tmits shall be of a size and
material as recommended by the manufacturer. The
tubing shall comply with the requirements of the
appropriate standards referenced in Table 14-1.
611.4 Sizing of Residential Softeners. Residential-
use water softeners shall be sized per Table 6-8.
124
WATER SUPPLY AND DISTRIBUTION
Table 6-5
Inch
mm
1/2
15
3/4
20
1
25
TABLE 6-5
Water Supply Fixture Units (WSFU) and lUlinimum Fixture Brancli Pipe Sizes°
Minimum
Fixture Branch
Private
Public
4.0
4.0
0.0
10.0
1.0
4.0
4.0
1.0
1.5
1.5
0.5
0.5
2.5
2.5
1.0
1.0
1.0
1.0
1.0
1.0
2.0
1.0
2.0
3.0
8.0
1.5
1.5
1.5
1.5
1.5
3.0
2.0
2.0
2.0
See Footnote '
See Footnote ?
2.0
2.0
4.0
2.5
2.5
2.5
2.5
See Footnote '
3.0
5.5
See Footnote '
Assembly'
0.75
1.0
Appliances, Appurtenances or Fixtures Pipe Size •
Bathtub or Combination Bath/Shower (fill) 1/2"
3/4" Bathtub Fill Valve 3/4"
Bidet 1/2"
Clothes washer 1/2"
Dental Unit, cuspidor... 1/2"
Dishwasher, domestic 1/2"
Drinking Fountain or Watercooler ,..,..,....... 1/2"
Hose Bibb 1/2"
Hose Bibb, each additional' 1/2"
Lavatory 1/2"
Lawn Sprlni<ier, each head'
Mobilehome, each (minimum)"
Sinks
Bar 1/2"
Clinic Faucet 1/2"
Clinic Fiushomete'r Valve
with or without faucet 1"
Kitchen, domestic 1/2"
Laundry 1/2"
Service or Mop Basin 1/2"
Washup, each set of faucets 1/2"
Shower, per head 1/2"
Urinal, 1.0 GPF Flushometer Valve 3/4"
Urinal, greater than 1 .0 GPF Flushometer Valve 3/4"
Urinal, flush tank 1/2"
Washfountain, circular spray 3/4"
Water Closet, 1 .6 GPF Gravity Tank 1/2"
Water Closet, 1 .6 GPF Flushometer Tank ,.,.... 1/2"
Water Closet, 1.6 GPF Flushometer Valve 1"
Water Closet, greater than 1.6 GPF Gravity Tank 1/2"
Water Closet, greater than 1.6 GPF Flushometer Valve 1"
Notes:
' Size of the cold branch pipe, or both the hot and cold branch pipes.
^ Appliances, Appurtenances or Fixtures not included in this Table may be sized by reference to fixtures having a similar flow rate
and frequency of use.
^ The listed fixture unit values represent their load on their cold water service. The separate cold water and hot water fixture unit
value for fixtures having both hot and cold water connections may each be taken as three-quarter ( 3/4) of the listed total value of
the fixture.
" The listed minimum supply branch pipe sizes for individual fixtures are the nominal (I.D.) pipe size.
° For fixtures or supply connections likely to impose continuous flow demands, determine the required flow in gallons per minute
(GPM), and add it separately to the demand (in GPM) for the distribution system or portions thereof.
= Assembly [Public Use (See Table 4-1 )]■
' When sizing flushometer systems, see Section 61 0.1 0.
= »- Reduced fixture unit loading for additional hose bibbs is to be used only when sizing total building demand and for pipe sizing
, when more than one hose bibb is supplied by a segment of water-distributing pipe. The fixture l^ranch to each hose bibb shall be
sized on the basis of 2.5 fixture units.
° For fixture unit vaiues related to manufactured tiousing (mobiieliomes) in aii parts of tlie State of California, see California Code of
Regulations, Title 25, Division 1, Chapters, Article 5, Section 1278. For fixture unit values related to Special Occupancy Parks in
all parts of the State of California, see California Code of Regulations, Title 25, Division 1, Chapter 2.2, Article 5, Section 2278.
3.0
3.5
3.5
7.0
125
Table 6-6
2007 CALIFORNIA PLUMBING CODE
Pressure Range - 30
Meter Building
and Supply
Street and
Service, Branches,
Inches Inches 40
(12)
3/4 1/2*** 6
3/4 3/4 16
3/4 1 29
1 1 36
3/4 1-1/4 36
1 1-1/4 54
1-1/2 1-1/4 78
1 1-1/2 85
1-1/2 1-1/2 150
2 1-1/2 151
1 2 85
1-1/2 2 220
2 2 370
2 2-1/2 445
TABLE 6-6
Fixture Unit Table for Determining Water Pipe and IVIeter Sizes
to 45 psi (207 to 310 ItPa)**
60
(18)
5
16
25
31
33
47
68
84
124
129
85
205
327
418
80
(24)
4
14
23
27
31
42
57
79
105
129
85
190
292
390
100
(30)
3
12
21
25
28
38
48
65
91
110
85
176
265
370
IViaximum Allowable Length in Feet (meters)
150
(46)
2
9
17
20
24
32
38
56
70
80
85
155
217
330
200
(61)
1
6
15
17
23
28
32
48
57
64
85
138
185
300
250 300
(76) (91)
1 1
5
13
15
21
25
28
43
49
53
82
127
5
12
13
19
23
25
38
45
46
80
120
400 500
(122) (152)
164 147
280 265
4
10
12
17
19
21
32
36
38
66
104
124
240
4
8
10
16
17
18
28
31
32
61
85
96
220
Incli
mm
1/2
15
3/4
20
1
25
1-1/4
32
1-1/2
40
2
50
2-1/2
65
600
(183)
3
6
8
13
14
15
26
26
27
57
70
70
198
700
(213)
2
6
6
12
12
12
22
23
23
52
61
61
175
800 900 1000
(244) (274) (305)
2 2 1
6 6 6
6 6 6
12 11 11
12 11 11
12 11 11
21 20 20
21 20 20
21 20 20
49 46 43
57 54 51
57 54 51
158 143 133
Pressure Range - 46 to
3/4 1/2***
3/4
3/4
1
3/4
1
1-1/2
1
1-1/2
2
1
1-1/2
2
2
3/4
1
1
1-1/4
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
2
2
2
2-1/2
7
20
39
39
39
78
78
85
151
151
85
370
370
654
60 psi
7
20
39
39
39
78
78
85
151
151
85
370
370
640
(317 to
6
19
36
39
39
76
78
85
151
151
85
340
370
610
414 l<Pa)'
5
17
33
36
39
67
78
85
151
151
85
318,
370
580
4
14
28
30
39
52
66
85
128
150
85
272
368
535
3
11
23
25
39
44
52
85
105
117
85
240
318
500
2
9
21
23
34
39
44
80
90
98
85
220
280
470
2
8
19
20
32
36
39
67
78
84
85
198
250
440
1
6
17
18
27
30
33
55
62
67
85
170
205
400
1
5
14
15
25
27
29
49
52
55
85
1
4
12
12
22
24
24
41
42
42
85
150 135
165 142
365 335
4
10
10
19
20
20
37
38
38
85
123
123
315
3
9
9
19
19
19
34
35
35
85
110
110
285
3
8
8
17
17
17
32
32
32
83
102
102
3
8
8
16
16
16
30
30
30
80
94
94
267 250
Pressure Range - Over 60 psi (414
3/4
3/4
3/4
1
3/4
1
1-1/2
1
1-1/2
2
1
1-1/2
2
2
1/2*** 7
3/4 20
1 39
1 39
1-1/4 39
1-1/4 78
1-1/4 78
1-1/2 85
1-1/2 151
1-1/2 151
2 85
2 370
2 370
2-1/2 654
7
20
39
39
39
78
78
85
151
151
85
370
370
654
7
20
39
39
39
78
78
85
151
151
85
370
370
654
l<Pa)**
6
20
39
39
39
78
78
85
151
151
85
370
370
654
5
17
35
38
39
74
78
85
151
151
85
360
370
654
4
13
30
32
39
62
74
85
151
151
85
335
370
650
3
11
27
29
39
53
65
85
130
142
85
305
370
610
3
10
24
26
39
47
54
85
113
122
85
282
340
570
2
8
21
22
34
39
43
81
88
98
85
244
288
510
1
7
17
18
28
31
34
64
73
82
85
1
6
14
14
26
26
26
51
51
64
85
212 187
245 204
460 430
1
6
13
13
25
25
25
48
51
51
85
172
172
404
1
5
12
12
23
23
23
46
46
46
85
153
153
380
1
4
12
12
22
22
22
43
43
43
85
141
141
4
11
11
21
21
21
40
40
40
85
129
129
356 329
* Available static pressure after head loss.
**Building supply, three-quarter (3/4) inch (20 mm) nominal size minimum.
126
WATER SUPPLY AND DISTRIBUTION
61 2.0 -Table 6-8
612.0 [For OSHPD 1,2,3& 4] Domestic Hot-water
Distribution Systems for Healtti Faciiities and
Clinics
612.1 The domestic water-heating equipment and
distribution systems shall supply water at the temperature
and amounts shown in Table 6-9. Wiere the system is
designed by a mechanical engineer, appropriate diversity
factors may be utilized.
612.2 At least two pieces of hot-water-heating equipment
shall be provided to supply hot water for dishwashing and
minimum patient services such as handwashing and
bathing. Booster heaters for 125°F. to 180°F. (52°C. to
82°C.) water are acceptable as a second piece of equipment
for dishwashing.
612.3 Instantaneous heaters are permitted for supplying
hot water to handwashing and bathing fixtures if a
continuous mechanical recirculation system is also provided.
612.4 Water storage tanks shall be fabricated of
corrosion-resistant materials or lined with corrosion-
resistant materials.
612.5 Temperature control valves shall he provided to
automatically regulate the temperature of hot water
delivered to plumbing fixtures used by patients to a range of
105°F (41°C) minimum to 1207 (49°C) maximum. High
temperature alarm set at 125°F (52°C) shall be provided.
The audible/visual device for the high temperature alarm
shall annuciate at a continuously occupied location.
612.6 Hot-water distribution system serving patient care
areas shall he under constant mechanical recirculation to
provide continuous hot water at each hot water outlet.
612.7 At fixtures wliere water exceeding 125°F (52°C) is
accessible to patients or personnel, wanting signs in letters at
least 2 inches (51 mm) high shall be posted above the fixtures.
612.8 Sectionalizing valves shall be provided as required
by Section 605.8.
Table 6-9
[For OSHPD 1,2,3& 4] Hot Water Use
Clinical
Dietauf
Laundry'
LitaiHour/Bed
11.9
7.2
7.6
GallonslHourlBed
3
2
2
Temperature °C
4:1-4:9.0
4:9.0
71.0
Tem-pemture °F
105-110.0
120.0
160.0
Rinse water temperature at automatic dishwashing equipment
and pot sinks shall be 180'F (82 "O.
Exception: The rinse water supply to pot rinse sinks may be
deleted if a method of chemical disinfection using a three-
compartment sink is proposed,
Tim required temperature ofl60°F (71°C) in the laundry is that
measure in teh washing machine and shall be supplied so that
the temperature may be maintained over the entire wash and
rinse period.
Exception A lower water temperature ofl40°F (60'C) may be
utilized, provided linens are subsequently passed tlmugh a tumblei-
diyer at 180'F (82 °C) or aflatwork ironer at 300 °F (149 'O.
Table 6-7
Flushorneter Fixture Units for Water Sizing Using
Table 6-5
Fixture Category: Water Closet w/ Flushorneter Valves
Individual
Fixture Units Assigned
Number of
Fixture Units
for Water Closets and
Flushorneter
Assigned in
Similar 10-Unit Fixtures
Valves
Decreasing Value
in Accumulative Values
1
40
40
2
30
70
3
20
90
4
15
105
5 or more
10 eadv
115 plus 10 for eaclT
additional fixture
in excess of 5
Fixture Category: Urinals w/ Flushorneter Valves
Individual
Fixture Units Assigned
Number of
Fixture Units
for Urinals and
Flushorneter
Assigned in
Similar 5-Unit Fixtures
Valves
Decreasing Value
in Acctmralative Values
1
20
20
2
15
35
3
10
45
4
8
53
5 or more
5 each
58 plus 5 for each
additional fixture
in excess of 5
TABLE 6-8
Sizing of Residential Water Softeners
Required Size of
Softener Connection
Number of Bathroom
Groups Served^
3/4 in.
lin.
up to 2
up to 4
' Installation of a kitchen sink and dishwasher,
laundry tray, and automatic clothes washer
permitted widaout additional size increase.
^ An additional water closet and lavatory permitted.
^ Over four batliroom groups, tlae softener size shall
be engineered for tlie specific iiistallation.
See also Appendix A, Recommended Rules for Sizing the
Water Supply System, and Appendix L, Alternate
Plumbing Systems, for alternate methods of-sizing-watex—
supply systems.
127
2007 CALIFORNIA PLUMBING CODE
128
CHAPTER 7
SANITARY DRAINAGE
Part I - Drainage Systems.
701.0 Materials.
701.1 Drainage piping shall be cast iron, galvanized
steel, galvanized wrought iron, lead, copper, brass.
Stainless Steel 304 or 316L, Schedule 40 ABS DWV,
Schedule 40 PVC DWV, extra-strength vitrified clay-
pipe, or oilier approved materials having a smooHi arid
uniform bore, except tliat:
701.1.1 No galvaiiized wrought-iron or
galvanized steel pipe shall be used iindergrouiid
and shall be kept at least six (6) inches (152 mm)
aboveground.
701 .1 .2 ABS and PVC DWV piping installations
shall be installed in accordance wiidi IS 5, IS 9,
and Chapter 15 "Firestop Protection." Except for
individual single-family dwelling units,
materials exposed witliin ducts or plenums shall
have a flame-spread index of not more than 25
and a smoke-developed index of not more than
50, when tested in accordance wifh the Test for
Surface - Burning Characteristics of tlie Buildiiig
Materials. (See the Building Code standards
based on ASTM E-84 and ANSI/UL 723.)
701.1.2.1 [For OSHPD 1, 2, 3 & 4] ABS and
PVC installations are not allowed.
701.1.2.2 [ HCD 1 & HCD 2] ABS and PVC
installations are limited to not more than two
stories of areas of residential accommodation.
701 .1 .3 No vitrified clay pipe or fittings shall
be used aboveground or where pressurized by
a pump or ejector. They shall be kept at least
twelve (12) inches (305 mm) belowground.
701.1.4 Copper tube for drainage and vent
piping shall have a weight of not less than that
of copper draiiTage tube tjrpe DWV.
701 .1 .5 Stauiless steel 304 pipe and fittings shall
not be mstalled underground and shall be kept
at least 6 inches (152 mm) aboveground.
701 .2 Draitiage fittuigs shall be of cast iron, malleable
iron, lead, brass, copper, ABS, PVC, vitrified clay,
stainless steel 304 and 316L (304 shall not be installed
underground and shall be kept at least 6 inches (152
_nn.m)-aboveground), or other approved materials
having a smooth interior waterway of the same
diameter as the pipiiig served, arid all such fittings
shall be compatible with the type of pipe used.
701 .2.1 Fittings on screwed pipe shall be of the
recessed drainage type. Burred ends shall be
reamed to the full bore of the pipe.
701.2.2 The tlireads of drainage fittmgs shall be
tapped so as to allow one-quarter (1/4) inch per
foot (20.9 mm/m) grade.
701.2.3 Fittings used for drainage shall be of the
drainage type, have a smooth interior water-
way, and be constructed so as to allow one
foui'th (1/4) indiper foot (20.9 mm/m) grade.
TABLE 7-1
Caulking Ferrules
Pipe Size
(tnches)
Inside
Diameter
(inches)
Length
(inches)
Minimum
Weight Each
lb. oz.
2
3
4
2-1/4
3-1/4
4-1/4
4-1/2
4-1/2
4-1/2
1
1 12
2 8
Caullcing Ferrules (Metric)
Pipe Size
(mm)
Inside
Diameter
(mm)
Length
(mm)
Minimum
Weight Each
(kg)
50
80
100
57
83
108
114
114
114
0.454
0.790
1.132
TABLE 7-2
Soldering Busliings
Pipe Size
(inches)
Minimum
Weight Each
lb. oz.
Pipe Size
(inches)
Minimum
Weight Each
lb. oz.
1-1/4
1-1/2
2
6
8
14
2-1/2
3
4
1 6
2
3 8
Soldering Bushings (Metric)
Pipe Size
(mm)
Minimum
Weight Each
(kg)
Pipe Size
(mm) _
Minimum
Weight Each
. (kg)
32
0.168
65
0.622
40
0.224
80
0.908
50
0.392
100
1.586
129
Table 7-3
2007 CALIFORNIA PLUMBING CODE
2.0
Inch
mm
1-1/4
32
1-1/2
40
2
50
2-1/2
65
3
80
TABLE 7-3
Drainage Fixture Unit Vaiues (DFU)
Min. Size
Trap and
Plumbing Appliance, Appurtenance, or Fixture Trap Arm'
Batlitub or Combination Bath/Shower 1-1/2"
Bidet 1-1/4"
Bidet 1-1/2"
Clothes Washer, domestic, standpipe' 2"
Dental Unit, cuspidor 1-1/4"
Dishwasher, domestic, with independent drain 1-1/2"'
Drinking Fountain or Watercooler (per head) 1-1/4"
Food-Waste-Grinder, commercial 2"
Floor Drain, emergency 2"
Floor Drain (for additional sizes see Section 702) 2"
Shower, single-head trap 2"
IVIulti-head, each additional 2"
Lavatory, single 1-1/4"
Lavatory, in sets of two or three 1-1/2"
Washfountain 1-1/2"
Washfountain 2"
Mobile Home, trap' 3"
Receptor, indirect waste" 1-1/2"
Receptor, indirect waste" 2"
Receptor, indirect waste' 3"
Sinks
Bar 1-1/2"
Bar 1-1/2"'
Clinical 3"
Commercial with food waste 1-1/2"'
Special Purpose 1-1/2"
Special Purpose 2"
Special Purpose 3"
Kitchen, domestic 1-1/2"'
(with or without food-waste grinder and/or dishwasher)
Laundry 1-1/2"
(with or without discharge from a clothes washer)
Service or Mop Basin 2"
Service or Mop Basin 3"
Service, flushing rim 3"
Wash, each set of faucets
Urinal, integral trap 1.0 GPF 2"
Urinal, integral trap greater than 1.0 GPF 2"
Urinal, exposed trap 1-1/2"'
Water Closet, 1 .6 GPF Gravity Tank' 3"
Water Closet, 1 .6 GPF Flushometer Tank' 3"
Water Closet, 1.6 GPF Flushometer Valve" 3"
Water Closet, greater than 1.6 GPF Gravity Tank" 3"
Water Closet, greater than 1 .6 GPF Flushometer Valve' 3"
' Indirect waste receptors shall be sized based on the total drainage capacity of the fixtures that drain therein to, in accordance with Table 7-4.
' Provide a 2" (51 mm) minimum drain.
= For refrigerators, coffee urns, water stations, and similar low demands.
^ For commercial sinl<s, dishwashers, and similar moderate or heavy demands.
= Buildings having a clothes-washing area with clothes washers in a battery of three (3) or more clothes washers shall be rated at six (6) fixture units each for
purposes of sizing common horizontal and vertical drainage piping.
" Water closets shall be computed as six (6) fixture units when determining septic tanl< sizes based on Appendix K of this code.
' Trap sizes shall not be increased to the point where the fixture discharge may be inadequate to maintain their self-scouring properties.
■ Assembly [Public Use (See Table 4-1 )].
' For fixture unit values related to manufactured housing (mobilehomes) in all parts of the State of California, see California Code of Regulations, Title 25, Division 1 , Chapter 2,
Article 5, Section 1 268. For fixture unit values related to Special Occupancy Parks in all parts of the State of California, see California Code of Regulations, Title 25, Division 1 ,
Chapter 2.2, Article 5, Section 2268.
Private
Public Assen
2.0
2.0
1.0
2.0
3.0
3.0 3.0
1.0 1.0
2.0
2.0 2.0
0.5
0.5 1.0
3.0 3.0
0.0 0.0
2.0
2.0 2.0
2.0
2.0 2.0
1.0
1.0 1.0
1.0
1.0 1.0
2.0
2.0 2.0
2.0 2.0
3.0 3.0
12.0
See footnote '■=
See footnote '■"
See footnote ^
1.0
2.0 2.0
6.0 6.0
3.0 3.0
2.0
3.0 3.0
3.0
4.0 4.0
6.0 6.0
2.0
2.0
2.0
2.0
3.0
3.0
3.0
3.0
6.0
6.0
2.0
2.0
2.0
2.0
5.0
2.0
2.0
6.0
2.0
2.0
5.0
3.0
4.0
6.0
3.0
4.0
6.0
3.0
4.0
6.0
4.0
6.0
8.0
4.0
6.0
8.0
130
SANITARY DRAINAGE
701 .3 - 704,4
701.3 Lead.
See Table 14-1. Sheet lead shall be iiot less than the
following:
For safe pans - not less than four (4) pomads per
square foot (19.5 kg/irf) or 1/16 incli. (1.6 rmn) thick.
For flashings or vent terminals - not less
than tliree (3) poimds per square foot (15 kg/m^) or
1.2 mm thick.
Lead bends and lead traps shall not be less than
one-eighth (1/8) iiich (3.2 mm) wall thickness.
701 .4 Ferrules and Bushings
701 .4.1 Caulking ferrules shall be manufactured
from bronze or copper and shall be in accordance
with Table 7-1.
701 .4.2 Soldering bushings shall be of broiize or
copper m accordance with Table 7-2.
702.0 Fixture Unit Equivalents.
The unit equivalent of plumbing fixtures showii m
Table 7-3 shall be based on the size of the trap
required, and the unit equivalent of fixtures and
devices not shown m Table 7-3 shall be based on the
rated discharge capacity in gpm (gallons per mhiute)
(liters per second) in accordance with Table 7-4.
Maximum trap loadings for sizes up to four (4)
inches (102 mm) are as follows:
1-1/4 in. (32 mm) — 1 unit
1-1/2 m. (40 mm) — 3 units
2 in. (50 mm) — 4 units
3 ill. (80 rmn) — 6 units
4 in. (100 mm) — 8 units
Exception: On self-service laundries.
703.0 Size of Drainage Piping.
703.1 The minimum sizes of vertical and/or
horizontal drainage piping shall be determined from
the total of all fixture uiuts connected thereto, and
additionally, m the case of vertical dramage pipes, ii\
accordance with their length.
703.2 Table 7-5 shows the maximum number of
fixture units allowed on aiiy vertical or horizontal
drauiage pipe, building drain, or building sewer of a
given size; the maximum number of fixture units
allowed on any branch interval of a given size; and
the maximum length (in feet and meters) of any
vertical drainage pipe of a given size.
TABLE 7-4
Discharge Capacity in Gallons per lUlinute
(Liters per Second)
For Intermittent Flow Only
GPM
(L/sec)
Up to 7-1/2 (Up to 0.47)
8 to 15 (0.50 to 0.95)
16 to 30 (1.00 to 1.89)
31 to 50 (1.95 to 3.15)
Equals 1 Unit
Equals 2 Units
Equals 4 Units
Equals 6 Units
Discharge capacity for over 50 gallons per minute
(3.15 L/sec.) shall be determined by the Authority
Havuig Jurisdictioii.
For a coiitinuous flow into a drainage system,
sucli as from a pump, sump ejector, air conditioning
equipment, or similar device, two (2) fixture units
shall be allowed for each gallon per minute (0.06
L/sec.) of flow.
703.3 For alterriate method of sizing drainage piping,
see Appendix L.
704.0 Fixture Connections (Drainage).
704.1 Drainage piping shall be provided with
approved inlet fittings for fixture connections,
correctly located accordmg to the size and type of
fixture proposed to be connected.
704.2 Two fixtures set back-to-back, or side-by-side,
within the distance allowed between a trap alid its
vent may be served by a single vertical drainage pipe
provided that each fixture wastes separately mto an
approved double-fixture fitting having inlet
openiiTgs at tlie same level.
704.3 Pot sinks, scullery sinks, dishwashing sinks,
silverware suTks, commercial dishwashing machines,
silverware-washing machines, arid other similar
fixtures shall be connected directly to the drainage
system. A floor dram shall be provided adjacent to
the fixture, and tlie fixture shall be connected on the
sewer side of the floor drain ti-ap, provided that no
other drainage Ime is connfected between the floor
dram waste coraaection and the fixture drain. The
fixture and floor drain shall be trapped and vented
as required by tliis code.
704.4 Closet Rings (Closet Flanges).
704.4.1 Closet rings (closet flanges) for water
closets or similar fixtures shall be of an approved"
type and shall be bronze, copper, hard lead, cast
iron, galvanized malleable iron, ABS, PVC, or
ofiier approved materials. Each such closet rmg
(closet flange) shall be approximately seven. (7)
131
Table 7-5 - 705.1
2007 CALIFORNIA PLUMBING CODE
TABLE 7-5
Maximum Unit Loading and Maximum Length of Drainage and Vent Piping
Size of Pipe, inches
1-1/4
1-1/2
2
2-1/2
3
4
5
6
8
10
12
(mm)
(32)
(40)
(50)
(65)
(80)
(100)
(125)
(150)
(200)
(250)
(300)
IVIaximum Units
Drainage Piping'
Vertical
1
2'
16"
32=
48'
256
600
1,380
3,600
5,600
8,400
Horizontal
1
1
8=
14=
35'
216'
428=
720=
2,640=
4,680=
8,200=
lUlaximum Length
Drainage Piping
Vertical, feet
45
65
85
148
212
300
390
510
750
(m)
(14)
(20)
(26)
(45)
(65)
(91)
(119)
(155)
(228)
Horizontal (unlimited)
Vent Piping (See note)
Horizontal and Vertical
Maximum Units
1
8=
24
48
84
256
600
1,380
3,600
Maximum Lengths, feet
45
60
120
180
212
300
390
510
750
(m)
(14)
(18)
(37)
(55)
(65)
(91)
(119)
(155)
(228)
' Excluding trap arm.
= Except sinks, urinals, and dishwashers.
^ Except six-unit traps or water closets.
* Only four (4) water closets or six-unit traps allowed on any vertical pipe or stack; and not to exceed three (3) water closets
or six-unit traps on any horizontal branch or drain.
= Based on one-fourth (1/4) Inch per foot (20.9 mm/m) slope. For one-eighth (1/8) inch per foot (10.4 mm/m) slope, multiply
horizontal fixture units by a factor of 0.8.
Note: The diameter of an individual vent shall not be less than one and one-fourth (1-1/4) inches (31 .8 mm) nor less than
one-half (1/2) the diameter of the drain to which it is connected. Fixture unit load values for drainage and vent piping shall
be computed from Tables 7-3 and 7-4. Not to exceed one-third (1/3) of the total permitted length of any vent may be
installed in a horizontal position. When vents are increased one (1) pipe size for their entire length, the maximum length
limitations specified in this table do not apply.
inches (175 mm) in diameter and, when installed,
shall, together with the soil pipe, present a one
and one-half (1-1/2) inch (38 mm) wide flange or
face to receive the fixture gasket or closet seal.
704.4.2 Caulked-on closet rings (closet flanges)
shall be not less than one-fourth (1/4) inch
(6.4mm) thick and not less than two (2) inches
(51mm) in overall depth.
704.4.3 Closet rings (closet flanges) shall be
burned or soldered to lead bends or stubs, shall
be caulked to cast-iron soU pipe, shall be solvent
cemented to ABS and PVC, and shall be screwed
or fastened in an approved manner to other
materials.
704.4.4 All such closet rings (closet flanges)
shall be adequately designed and secured to
support fixtures connected thereto.
704.4.5 Closet screws, bolts, washers, and
similar fasteners shall be of brass, copper, or
other listed, equally corrosion-resistant
materials. AU such screws and bolts shall be of
adequate size and number to properly support
the fixture installed.
705.0 Joints and Connections.
705.1 Types of Joints.
705.1.1 Caull<ed Joints. Caulked joints for cast-
iron bell-and-spigot soU pipe and other similar
joints shall be firmly packed with oakum or
hemp and filled with molten lead to a depth of
not less than one (1) inch (25.4 mm). The lead
shall be caulked thoroughly at the inside and
outside edges of the joint. After caulking, the
finished joint shall not extend more than one-
eighth (1/8) inch (3.2 mm) below the rim of the
hub. No paint, varnish, or other coatings shaU be
permitted on the joining material imtU after the
joint has been tested and approved. Caulked
joints in cast-iron bell-and-spigot water piping
shall be made with nontoxic materials.
705.1.1.1 Caulked Joints [For DSA/SS,
OSHPD 1, 2, 3 & 4] All joints for liquid
material are to he renamed to full size and
cleaned of all loose materials.
705.1.2 Cement i\/iortar Joints. Except for
repairs and connections to existing lines
constructed with such joints, cement mortar
joints shall be prohibited on building sewers.
132
SANITARY DRAINAGE
705.1-706.2
705.1.3 Burned Lead Joints. Burned (welded)
lead joints shall be lapped, and the lead shall be
fused together to form a uruf orm weld at least as
tl'vick as the lead being joined.
705.1.4 Asbestos Cement Sewer Pipe Joints.
Joints in asbestos cement pipe shall be a sleeve
coupling of the same composition as the pipe or
of other approved materials, and sealed with
rubber rings or joined by an approved-type
compression coupling. Joints between asbestos
cement pipe and other approved pipe shall be
made by means of an approved adapter coupling.
705.1.5 Pacl<ing Additives Proiiibited. The
addition of leak-sealing additives to joint packing
shall be proiiibited.
705.1.6 lUlolded Rubber Coupiing Joints. When
pipe is joined by means of molded rubber
coupling joints^ such joints shall conform to
approved standards and shall not be considered
as slip joints. When required, appropriate rubber
bushings shall be used to allow for any
difference in piping material diameters.
705.1.7 Elastomeric Gaslceted and Rubber-Ring
Joints. Elastomeric gasketed and rubber-ring
joints shall comply with the applicable liTStalla-
tion Standard listed in Appendix I.
Exception: [HCD 1 & HCD 2] Compliance with
an approved nationally recognized installation
standard complying with Section 310.4 of this
code and approved by the Enforcing Agency is
acceptable.
705.1.8 Shielded Coupiing Joints. Wlien piping
systems are joined by means of shielded
couplings, such couplings shall conform to
approved standards and shall not be considered
as slip joints.
705.1.9 Hubless Cast-iron Pipe Joints. Joints for
hubless cast-iron soil pipe and fittings shall
conform to appropriate Installation Standards
listed in Appendix I and shall not be considered
as slip joints.
Exception: [HCD 1 & HCD 2] Compliance with
an approved nationally recognized installation
standard complying with Section 310.4 of this
code and approved by the Enforcing Agency is
acceptable.
705.2 Use of Joints.
705.2.1 Clay and Sewer Pipe. Joints in vitrified
clay pipe or between such pipe and metal pipe
shall be made as provided in Section 316.1.5,
705.1.2, 705.1.6, or 705.1.8.
705.2.2 Cast-iron Pipe. Jomts in cast-iron pipe
shall be made as provided in Section 316.1.1,
316.1.5, 606.1.2, 705.1.1, 705.1.8, or 705.1.9.
705.2.3 Screw Pipe to Cast iron. Joints between
wrought iron, steel, brass, or copper pipe and
cast-iron pipe shall be eitlier caulked or threaded
joints made as provided in Section 316.1.1 or
705.1.1, or shall Ibe made witli approved adapter
fittings.
705.2.4 Lead to Cast Iron, Wrought iron, or Steei.
Joints between lead and cast-iron, wrought-iron,
or steel pipe shall be made by means of wiped
joints to a caulking ferrule, soldering nipple, or
bushing as provided in Section 316.1.2.
705.2.5 ABS and PVC Pipe. [HCD 1 & HCD 2,
OSHPD 1, 2, 3 & 4] Joints in ABS and PVC pipe
shall be made as provided in Section 316.1.6 of this
code.
705.3 Special Joints.
705.3.1 Slip Joints. In fixture drains and traps,
sUp joints of approved materials may be used in
accordance witli their approvals.
705.3.2 Expansion Joints. Expansion joints
shall be accessible, except when in vent piping
or drainage stacks, and may be used where
necessary to provide for expansion and
contraction of the pipes.
705.3.3 Ground Joint, Flared, or Ferrule
Connections. Brass or copper ground joint,
flared, or ferrule-type connections that allow
adjustment of tubing, but provide a rigid joint
when made up, shall not be considered as slip
joints.
706.0 Changes in Direction of Drainage Flow.
706.1 Changes in du-ection of drainage piping shall
be made by the appropriate use of approved fittings
and shall be of the angles presented by a one-
sixteenth (1/16) bend, one-eighth (1/8) bend, or one-
sixth (1/6) bend, or other approved fittings of
equivalent sweep.
706.2 Horizontal drainage lines, connecting with a
vertical stack, shall enter through forty-five (45)
degree (0.79 rad) wye branches, sixty (60) degree
(1.05 rad) wye branches, combination wye and 1/8
bend branches, sanitary tee or sanitary tapped tee
branches, or other approved fittings of equivalent
sweep. No fitting having more than one (1) uilet at
the same level shall be used unless such fitting is
constructed so that the discharge from one (1) inlet
cannot readily enter any other inlet. Double sanitary
tees may be used when the barrel of the fitting is at
least two (2) pipe sizes larger tlian the largest inlet,
(pipe sizes recognized for tliis purpose are 2 in., 2-
1/2 in., 3 in., 3-1/2 in., 4 in., 4-1/2 in., 5 in., 6 in., etc.)
(50, 65, 80, 90, 100, 115, 125, 150 mm, etc.).
133
706.3 - Table 7-6
2007 CALIFORNIA PLUMBING CODE
706.3 Horizontal drainage lines connecting with
other horizontal drainage lines shall enter
through forty-five (45) degree (0.79 rad) wye
branches, combination wye and one-eighth (1/8)
bend branches, or other approved fittings of
equivalent sweep.
706.4 Vertical drainage lines connecting with
horizontal drainage lines shall enter through forty-
five (45) degree (0.79 rad) wye branches, combination
wye and one-eighth (1/8) bend branches, or other
approved fittings of equivalent sweep. Sixty (60)
degree (1.05 rad) branches or offsets may be used
only when installed in a true vertical position.
707.0 Cleanouts.
707.1 Each cleanout fitting for cast-iron pipe shall
consist of a cast-iron or brass body and an approved
plug. Each cleanout for galvanized wrought-iron,
galvanized steel, copper, or brass pipe shall consist
of a brass plug as specified in Table 7-6, or a standard
weight brass cap, or an approved ABS or PVC plastic
plug, or an approved stainless steel cleanout or plug.
Plugs shall have raised square heads or approved
countersunk rectangtilar slots.
707.2 Each cleanout fitting and each cleanout plug or
cap shall be of an approved type.
707.3 Cleanouts shall be designed to be gas and
watertight.
707.4 Each horizontal drainage pipe shall be
provided with a cleanout at its upper terminal, and
each run of piping, that is more than one hxmdred
(100) feet (30,480 mm) in total developed length,
shall be provided with a cleanout for each one
hundred (100) feet (30,480 mm), or fraction thereof,
in length of such piping.
Exceptions:
(1) Cleanouts may be omitted on a horizontal
drain line less than five (5) feet (1524 mm) in
length unless such line is serving sinks or
urinals.
(2) Cleanouts may be omitted on any horizontal
drainage pipe installed on a slope of
seventy- two (72) degrees (1.26 rad) or less
from the vertical angle (angle of one-fifth
(1/5) bend).
(3) Excepting the building drain and its
horizontal branches, a cleanout shall not be
required on any pipe or piping that is
above the floor level of the lowest floor of
the building.
(4) An approved type of two-way cleanout
fitting, installed inside the building wall
near the connection between the building
drain and the building sewer or installed
outside of a building at the lower end of a
building drain and extended to grade, may
be substituted for an upper terminal
cleanout.
707.5 An additional cleanout shall be provided in a
drainage hne for each aggregate horizontal change of
direction exceeding one himdred and thirty-five (135)
degrees (2.36 rad).
707.6 Each cleanout shall be installed so that it opens
to allow cleaning in the direction of flow of the soil or
waste or at right angles thereto and, except in the case
of wye branch and end-of-line cleanouts, shall be
installed vertically above the flow line of the pipe.
707.7 Each cleanout extension shall be considered as
drainage piping and each ninety (90) degree (1.6 rad)
cleanout extension shall be extended from a wye-type
fitting or other approved fitting of equivalent sweep.
707.8 Each cleanout for an interceptor shall be
outside of such interceptor.
707.9 Each cleanout, unless installed under an
approved cover plate, shall be above grade, readily
accessible, and so located as to serve the purpose for
which it is intended. Cleanouts located imder cover
plates shall be so installed as to provide the clearances
and accessibility required by this section.
707.10 Each cleanout in piping two (2) inches (50
mm.) or less in size shall be so installed that there is a
clearance of not less than twelve (12) inches (305
mm) in front of the cleanout. Cleanouts in piping
larger than two (2) inches (50 mm) shall have a
Table 7-6
Cleanouts
Size of Pipe
Size of Cleanout
Threads
(inches)
(inches)
(per Inches)
1-1/2
1-1/2
11-1/2
2
1-1/2
11-1/2
2-1/2
2-1/2
8
3
2-1/2
8
4 & larger
3-1/2
8
TABLE 7-6
Cleanouts (Metric)
Size of Pipe
Size of Cleanout
Threads
(mm)
(mm)
(per 25.4 mm)
40
38
11-1/2
50
38
11-1/2
65
64
8
80
64
8
100 & larger
89
8
134
SANITARY DRAINAGE
707.10-710.6
clearance of not less than eighteen (18) inches (457
mm) in front of the cleanput. Cleanouts in under-
floor piping shall be extended to or above the fiiiished
floor or shall be extended outside the buildiiTg when
there is less than eighteeii (18) inches (457 mm)
vertical overall, allowing for obstructions such as
ducts, beams, and piping, and thirty (30) inches of
(762 mm) horizontal clearance from the means of
access to such cleanout. No under-floor cleanout
shall be located more than twenty (20) feet (6096
mm) from an access door, trap door, or crawl hole.
707.1 1 CleaiTout fittings shall be not less in size than
tliose given in Table 7-6.
707.12 Cleanouts shall be provided for pressure
drainage systems as classified under Section 710.7.
707.13 Couiitersunk cleanout plugs shall be installed
where raised heads may cause a hazard.
707.14 When a hubless blind plug is used for a
required cleanout, the complete coupling and plug
shall be accessible for removal or replacement.
708.0 Grade of Horizontal Drainage Piping.
Horizontal drainage piping shall be run in practical
alignment and a uniform slope of not less than one-
fourth (1/4) inch per foot (20.9 mm/m) or two (2)
percent toward the point of disposal provided tliat,
where it is impractical due to the depth of the street
sewer or to the structural features or to the
arrangement of any building or structure to obtain a
slope of one-fourth (1/4) of an inch per foot (20.9
mm/m) or two (2) percent, any such pipe or piping
four (4) inches (100 mm) or larger in diameter may
have a slope of not less tlian one-eightli (1/8) of an
inch per foot (10.5 mm/m) or one (1) percent, when
first approved by tlie Authority Having jurisdiction.
709.0 Gravity Drainage Required.
Wherever practicable, all plumbmg fixtures shall be
drained to the public sewer or private sewage
disposal system by gravity.
710.0 Drainage of Fixtures Located Below the Next
Upstream Manhole or Below the Main Sewer Level.
710.1 Wliere a fixture is installed on a floor level that
is lower than the next upsti'eam manhole cover of the
public or private sewer, serving sucli drainage piping,
shall be protected from backflow of sewage by
installing an approved type of backwater valve.
-Fixtures on floor levels above sudi elevation shall not
discliarge through the baclcwater valve.
710.2 Drainage piping serving fixtures that are
located below the crown level of the main sewer
shall discharge into an approved watertight sump or
receiving tank, so located as to receive tlie sewage or
wastes by gravity. From such sump or receiving
tank, tlie sewage or other liquid wastes shall be lifted
and discharged mto the building drain or building
sewer by approved ejectors, pumps, or other equally
efficient approved mechanical devices.
710.3 A sewage ejector or sewage pump receiving
the discliarge of water closets or urinals:
710.3.1 Shall have a minimum discharge
capacity of twenty (20) gallons (75.7 liters) per
minute.
710.3.2 In single dwelling units, the ejector or
pump shall be capable of passing a one and one-
half (1-1/2) inch (38 mm) diameter solid ball,
and the discharge piping of each ejector or
pump shall have a backwater valve and gate
valve, and be a minimum of two (2) inches
(51mm) in diameter.
71 0.3.3 Ln. other tliaii single-dwelling units, the
ejector or pump shall be capable of passing a
two (2) iiich (51 mm) diameter solid ball, and the
discharge piping of each ejector or pump shall
have a backwater valve and gate valve, and be a
minimum of tliree (3) incites (80 mm) in diameter.
710.3.3.1 [HCD 1 & HCD 2] The minimum size
of any pump or any discharge pipe from a sump
having a water closet connected thereto shall he
not less than (2) indies (51 mm).
71 0.4 The discharge line from such ejector, pump, or
other mechanical device shall be provided with an
accessible backwater or swing check valve and gate
or ball valve. If the gravity drainage line to which
such discharge line connects is horizontal, the
method of connection shall be from the top tlirough
a wye branch fitting. The gate or ball valve shall be
located on the discharge side of the backwater or
check valve.
Gate or ball valves, when installed in drainage
piping, shall be fuUway type with workmg parts of
corrosion-resistant metal. Sizes four (4) inches
(100mm) or more in diameter shall have cast-iron
bodies, and sizes less than four (4) inches (100 mm),
cast-iron or brass bodies.
71 0.5 Building drains or building sewers receiving
discharge from any pump or ejector shall be
adequately sized to prevent overloading. Two (2)
fixture units shall be allowed for each gallon per
minute (0.06 L/s) of flow.
710.6 Backwater valves, gate valves, fullway ball
valves, rmions, motors, compressors, air tanks, and
other mechanical devices required by this section
shall be located where they will be accessible for
inspection and repair at all times and, unless
continuously exposed, shall be enclosed in a
masonry pit fitted with an adequately sized
removable cover.
135
710.6-712.1
2007 CALIFORNIA PLUMBING CODE
Backwater valves shall have bodies of cast iron,
plastic, brass, or other approved materials; shall have
noncorrosive bearings, seats, and self-aligning discs;
and shall be constructed so as to ensure a positive
mechanical seal. Such backwater valves shall remain
stiffidenfly open during periods of low flows to avoid
screening of solids and shall not restrict capacities or
cause excessive turbulence during peak loads. Unless
otherwise Hsted, valve access covers shall be bolted
type with gasket, and each valve shall bear the
manufacturer's name cast into the body and the cover.
710.7 The drainage and venting systems, in connec-
tion with fixtures, sumps, receiving tanks, and
mechanical waste-lifting devices, shall be installed
under the same requirements as provided for in this
code for gravity systems.
710.8 Sumps and receiving tanks shall be watertight
and shall be constructed of concrete, metal, or other
approved materials. If constructed of poured concrete,
the walls and bottom shall be adequately reinforced
and designed to recognized acceptable standards.
Metal surnps or tanks shall be of such thickness as to
serve their intended purpose and shall be treated
internally and externally to resist corrosion.
710.9 All such sumps and receiving tanks shall be
automatically discharged and, when in any "public
use" occupancy, shall be provided with dual pumps
or ejectors arranged to function alternately in normal
use and independently in case of overload or
mechanical failure. The pumps shall have an audio
and visual alarm, readily accessible, that signals
pump failure or an overload condition. The lowest
inlet shall have a minimum clearance of two (2)
inches (51 mm) from the high-water or "starting"
level of the sump.
710.10 Sumps and receiving tanks shall be provided
with substantial covers having a bolt-and-gasket-
type manhole or equivalent opening to permit access
for inspection, repairs, and cleaning. The top shall be
provided with a vent pipe that shall extend
separately through the roof or, when perroitted, may
be combined with other vent pipes. Such vent shaU
be large enough to maintain atmospheric pressure
within the sump under all normal operating
conditions and, in no case, shall be less in size than
that reqxiired by Table 7-5 for the number and type
of fixtures discharging iato the sump, nor less than
one and one-half (1-1/2) inches (40 mm) in diameter.
When the foregoing requirements are met and the
vent, after leaving the sump, is combined with vents
from fixtures discharging into the sump, the size of
the combined vent need not exceed that required for
the total number of fixtures discharging into the
stunp. No vent from an air-operating sewage ejector
shall combine with other vents.
710.1 1 Air tanks shall be so proportioned as to be of
equal cubical capacity to the ejectors connected
therewith in which there shall be maintained an air
pressure of not less than two (2) potmds for each foot
(3 kg for each m) of height the sewage is to be raised.
No water-operated ejectors shall be permitted.
710.12 Grinder Pump Ejector. Grinder pimips shall
be permitted to be used.
710.13 Macerating Toilet Systems. Listed macerating
toilet systems shall be permitted as an alternate to a
sewage pump system when approved by the
Authority Having Jurisdiction.
710.13.1 Sumps. The sump shall be water- and
gastight.
710.13.2 Discharge Piping. The discharge piping
shall be sized per manufacturer's instructions
and shall be not less than 3/4 inches (20 mm) in
diameter. The developed length of the discharge
piping shall not exceed the manufacturer's
recommendations. A check valve and fullway-
type shutoff valve shall be located within the
discharge line or internally within the device.
710.13.3 Venting. The plumbing fixtures that
discharge into the macerating device shall be
vented per this code. The stimp shall be vented
per manufacturer's instructions and such vent
shall be permitted to connect to the fixture
venting.
71 1.0 Suds Relief.
Drainage connections shall not be made into a
drainage piping system within eight (8) feet (2438
mm) of any vertical to horizontal change of direction
of a stack containing suds-producing fixtures.
Bathtubs, laundries, washing machine standpipes,
kitchen siriks, and dishwashers shall be considered
suds-producing fixtures. Where parallel vent stacl<s
are required, they shall connect to the drainage stack
at a point eight (8) feet (2,438 mm) above the lowest
point of the drainage stack.
Exceptions:
(1) Single-family residences.
(2) Stacks receiving the discharge from less than
three (3) stories of pltimbing fixtures.
712.0 Testing.
712.1 Media. The piping of the plumbing, drainage,
and venting systems shall be tested with water or air
except that plastic pipe shall not be tested with air.
The Authority Having Jurisdiction may require the
removal of any cleanouts, etc., to ascertain whether
136
SANITARY DRAINAGE
712.1 -714.5
the pressure has reached all parts of the system.
After the plumtrng fixtures have been set and their
traps filled with water, they shall be submitted to a
final test.
712.2 Water Test. The water test shall be applied to
tlie drainage and vent systems either in its entirety or
in sections. If tlae test is applied to the entire system,
all openings in the piping shall be tightly closed,
except tlie highest opening, arid tlie system filled witl\
water to point of overflow. If die system is tested ut
sections, each opening shall be tightly plugged,
except the Iiighest opening of tlie section imder test,
and each section shall be filled with water, but no
section shall be tested witli less than a ten (10) foot
(3048 mm) head of water. In testing successive
sectioiis, at least tlie upper ten (10) feet (3048 mm) of
the next preceding section shall be tested, so tliat no
joint or pipe in the building (except the uppermost
ten (10) feet (3048 mm) of tlie system) shall have been
submitted to a test of less than a ten (10) foot (3048
mm) head of water. The water shall be kept in the
system, or in the portion under test, for at least fifteen
(15) minutes before inspection starts. The system shall
tlien be tight at all points.
712.3 Air Test. The air test shall be made by
attaching an air compressor testing apparatus to any
suitable opening and, after closing all other inlets
and outlets to die system, forcing air into the system
until there is a uniform gauge pressure of five (5)
pounds per square inch (34.5 kPa) or sufficient to
balance a column of mercury ten (10) inches (254
mm) in height. The pressure shall be held without
introduction of additional air for a period of at least
fifteen (15) minutes.
Part II - Building Sewers.
713.0 Sewer Required.
713.1 Every building in wliicli plumbing fixtures are
installed and every premises having drainage piping
thereon shall have a connection to a pubHc or private
sewer, except as provided in Sections 101.4.1.3, 713.2,
and 713.4.
713.2 Wlien no public sewer intended to serve any lot
or premises is available in any tlioroughfare or fight
of way abutting such lot or premises, drainage piping
from any building or works shall be coraiected to an
approved private sewage disposal system.
713.3 Within the limits prescribed by Section 713.4
hereof, the rearrangement or subdivision into smaller
parcels of a lot tliat abuts and is served by a public
sewer shall not be deemed cause to permit the
construction of a private sewage disposal system, and
all plumbing or drainage systems on any sucli smaller
parcel or parcels shall connect to tlie public sewer.
713.4 The public sewer may be considered as not
being available when such public sewer or any
building or any exterior drainage facility cormected
thereto is located more than two hundred (200) feet
(60.8 m) from any proposed building or exterior
drainage facility on any lot or premises that abuts
and is served by such public sewer.
71 3.5 No permit shall be issued for tlie installation,
alteration, or repair of any private sewage disposal
system, or part thereof, on any lot for which a
connection with a public sewer is available,
713.6 On every lot or premises hereafter connected
to a public sewer, all plumbing and dramage systems
or parts thereof on such lot or premises shall be
connected with such public sewer.
Exception: Single-family dwellings and
buildings or structures accessory thereto,
existing and connected to an approved private
sewage disposal system prior to the time of
connecting the premises to the public sewer
may, when no hazard, nuisance, or insanitary
condition is evidenced and written permission
has been obtained from the Authority Having
Jurisdiction, remain comiected to sucli properly
maintained private sewage disposal system
when tliere is insufficient grade or fall to permit
drainage to tlie sewer by gravity.
714.0 Damage to Public Sewer or Private Sewage
Disposal System.
714.1 It shall be unlawful for any person to deposit,
by any means whatsoever, into any plumbing fixture,
floor drain, interceptor, sump, receptor, or device
which is connected to any drainage system, public
sewer, private sewer, septic tank, or cesspool, any
ashes; cinders; solids; rags; flammable, poisonous, or
explosive liquids or gases; oils; grease; and any otlier
thing whatsoever that would or could cause damage
to die public sewer, private sewer, or private sewage
disposal system.
714.2 No rain, surface, or subsurface water shall be
connected to or discharged into any drainage
system, unless first approved by the Authority
HaviLig Jurisdiction.
714.3 No cesspool, septic tank, seepage pit, or
drauifield shall be connected to any public sewer or
to any buildmg sewer leading to sucli public sewer.
714.4 The Audiority Having Jurisdiction shall review
before approval, die installation of a commercial food
waste grinder connecting to a private sewage disposal
system.
714.5 An approved-type watertight sewage or
wastewater holding tank, die contents of wliicli, due
137
714.5-719.5
2007 CALIFORNIA PLUMBING CODE
to their character, must be periodically removed and
disposed of at some approved off-site location, shall
be installed only when required by the Authority
Having Jurisdiction or the Health Officer to prevent
anticipated surface or subsurface contamination or
pollution, damage to the public sewer, or other
hazardous or nuisance conditions.
715.0 Building Sewer I\/laterials.
715.1 The building sewer, beginning two (2) feet (610
mm) from any building or structure, shall be of such
[ materials as prescribed in this code.
715.2 Joining methods and materials shall be as
prescribed in this code.
71 5.3 Replacement of existing building sewer and
building storm sewers using trenchless methodology
and materials shall be installed in accordaiice with
lAPMO IS-26.
716.0 Markings.
All pipe, brick, block, prefabricated septic tanks,
prefabricated septic tank or seepage pit covers, or
other parts or appurtenances incidental to the
installation of building sewers or private sewage
disposal systems shall conform to the approval
► requirements of Chapter 3 of this code.
717.0 Size of Building Sewers.
The minimum size of any building sewer shall be
determined on the basis of the total number of
fixture tmits drained by such sewer, in accordance
with Table 7-8. No building sewer shall be smaller
than the building drain.
For alternate methods of sizing building sewers,
see Appendix L.
717.1 [AGR] Meat and Poultry Processing Plants.
The sewer system shall have the capacity to remove all
waste from the various processing and cleaning operations
and to minimize or prevent stoppage and surcharging at
the system.
718.0 Grade, Support, and Protection of Building
Sewers.
718.1 Building sewers shall be run in practical
alignment and at a uniform slope of not less than
one-fourth (1/4) of an inch per foot (20.9 nun/m)
toward the point of disposal.
Exception: When approved by the Authority
Having Jurisdiction and where it is impractical,
due to the depth of the street sewer or to the
structural features or to the arrangement of any
building or structure, to obtain a slope of one-
fourth (1/4) of an inch per foot (20.9 mm/m).
any such pipe or piping four (4) inches (100 mm)
through six (6) inches (150 mm) may have a
slope of not less than one-eighth (1/8) inch per
foot (10.5 mm/m) and any such piping eight (8)
inches (200 mm) and larger may have a slope of
not less than one-sixteenth (1/16) of an inch per
foot (5.3 mm/m).
71 8.2 Building sewer piping shall be laid on a firm
bed throughout its entire length, and any such
piping laid in made or filled-in groimd shall be laid
on a bed of approved materials and shall be properly
supported as required by the Authority Having
Jurisdiction.
718.3 No building sewer or other drainage piping or
part thereof, which is constructed of materials other
than those approved for use under or within a
building, shall be installed under or within two (2)
feet (610 mm) of any building or structure, or part
thereof, nor less than one (1) foot (305 mm) below the
surface of the ground. The provisions of this
subsection include structures such as porches and
steps, whether covered or uncovered; breezeways;
roofed porte cocheres; roofed patios; carports;
covered walks; covered driveways; and similar
structures or appurtenances.
719.0 Cleanouts.
719.1 Cleanouts shall be placed inside the building
near the connection between the building drain and
the building sewer or installed outside the building
at the lower end of the building drain and extended
to grade.
Additional building sewer cleanouts shall be
installed at intervals not to exceed one himdred (100)
feet (30,480 mm) in straight runs and for each
aggregate horizontal change in direction exceeding
one hundred thirty-five (135) degrees (2.36 rad).
719.2 When a building sewer or a branch thereof does
not exceed ten (10) feet (3,048 mm) in length and is a
straight-line projection from a btulding drain that is
provided with a cleanout, no cleanout will be required
at its point of connection to the building drain.
71 9.3 AU required building sewer cleanouts shall be
extended to grade and shall comply with all
appropriate sections of Cleanouts, Section 707.0, for
sizing, construction, and materials. When building
sewers are located under buildings, the cleanout
requirements of Section 707.0 shall apply.
719.4 Each cleanout shall be installed so that it opens
to allow cleaning in the direction of flow of the soU or
waste or at right angles thereto and, except in the case
of wye branch and end-of-line cleanouts, shall be
installed vertically above the flow line of the pipe.
71 9.5 Cleanouts installed mider concrete or asphalt
138
SANITARY DRAINAGE
71 9.5 -Table 7-8
paving shall be made accessible by yard boxes or by
extendiiig flush witli paving with approved materials
and shall be adequately protected.
71 9.6 Approved manl-Toles may be installed in lieu
of cleaiTOUts, when first approved by the Authority
Having Jurisdiction. The maximum distance
between manlioles shall not exceed three hundred
(300) feet (91.4 m).
The inlet and outlet comiections shall be made
by the use of a flexible compression joint no closer
flian twelve (12) inches (305 mm) to aiTd not farther
than tliree (3) feet (914 mm) from the manliole. No
flexible compression joints shall be embedded in the
manliole base.
720.0 Sewer and Water Pipes.
Building sewers or drainage piping of clay or materi-
als that are not approved for use witliin a building
shall not be run or laid in the same trench as tlie
water pipes unless both of the following
requirements are met:
(1) The bottom of tlie water pipe, at all points,
shall be at least twelve (12) inches (305 rmn)
above the top of the sewer or drain line.
(2) The water pipe shall be placed on a solid
shelf excavated at one side of the common
trench with a minimum clear horizontal
distance of at least twelve (12) inches (305
mm) from the sewer or draiii Ime.
Water pipes crossuig sewer or drainage
piping constructed of clay or materials
that are not approved for use within a
buildmg shall be laid a minimum of twelve
(12) inches (305 mm) above that sewer or
dram pipe.
Note:
For the purpose of this section, "within the
buildmg" shall mean within tlie fixed limits of
tlie buUdiiig foundation.
TABLE 7-7
Minimum Horizontal Distance Required From Building Sewer
Buildings or structures' 2 feet (610 mm)
Property line adjoining private
property Clear'
Water supply wells 50feet° (15,240 mm)
Streams 50 feet (15,240 mm)
On-site domestic water
service line , ,. 1 foot' (305 mm)
Public water main 10 feet"'" (3,048 mm)
Note:
' Including porches and steps, whether covered or uncovered; breezeways; roofed portecocheres; roofed patios; carports;
covered walks; covered driveways; and similar structures or appurtenances.
= See also Section 313.3.
^ All drainage piping shall clear domestic water supply wells by at least fifty (50) feet (15,240 mm). This distance may be reduced
to not less than twenty-five (25) feet (7,620 mm) when the drainage piping is constructed of materials approved for use within a
building.
" See Section 720.0.
'= For parallel construction.
^ For crossings, approval by the Health Department or Authority Having Jurisdiction shall be required.
TABLE 7-8
Maximum/Minimum Fixture Unit Loading on Building Sewer Piping
Size of Pipe,
Inches (mm)
6 and smaller (150)
8 (200)
10 (250)
12 (300)
Slope, Inches per Foot (mm/m)
1/16(6.3) 1/8(10.5) 1/4(20.9)
(As specified in Table 7-5/No minimum loading)
1 ,950/1 ,500 2,800/625 3,900/275
3,400/1 ,600 4,900/675 6,800/300
5,600/1,700 8,000/725 11,200/325
See also Appendix K, Private Sewage Disposal Systems. For alternate metlnods of sizing drainage piping, see
Appendix L
139
721 .0 - 726.2
2007 CALIFORNIA PLUMBING CODE
721.0 Location.
721.1 Except as provided in Section 721.2, no
building sewer shall be located in any lot other than
the lot that is the site of the buUding or structure
served by such sewer nor shall any building sewer
be located at any point having less than the
minimum distances tadicated in Table 1-7.
721.2 Nothing contained in this code shall be
construed to prohibit the use of all or part of an
abutting lot to:
(1) Provide access to connect a building sewer to an
available public sewer when proper cause and
legal easement, not in violation of other
requirements, has been first established to the
satisfaction of the Authority Having Jurisdiction.
(2) Provide additional space for a building sewer
when proper cause, transfer of ownership, or
change of boundary, not in violation of other
requirements, has been first established to the
satisfaction of the Authority Having Jurisdiction.
The instrument recording such action shall
constitute an agreement with the Authority
Having Jurisdiction and shall clearly state and
show that the areas so joined or used shall be
maintained as a tmit during the time they are so
used. Such an agreement shall be recorded in the
office of the County Recorder as part of the
conditions of ownership of said properties, and
shall be binding on all heirs, successors, and
assigns to such properties. A copy of the
instrument recording such proceedings shall be
filed with the Authority Having Jurisdiction.
722.0 Abandoned Sewers and Sewage Disposal
Faciiities.
722.1 Every abandoned building (house) sewer, or
part thereof, shall be plugged or capped in an
approved manner within five (5) feet (1,524 mm) of
the property line.
722.2 Every cesspool, septic tank, and seepage pit
that has been abandoned or has been discontinued
otherwise from further use, or to which no waste or
soil pipe from a pltmibing fixture is connected, shall
have the sewage removed therefrom and be
completely fiUed with earth, sand, gravel, concrete,
or other approved material.
722.3 The top cover or arch over the cesspool, septic
tank, or seepage pit shall be removed before filling,
and the filling shall not extend above the top of the
vertical portions of the sidewalls or above the level
of any outlet pipe until inspection has been called
and the cesspool, septic tank, or seepage pit has been
inspected. After such inspection, the cesspool, septic
tank, or seepage pit shall be filled to the level of the
top of the ground.
722.4 No person owning or controlling any cesspool,
septic tank, or seepage pit on the premises of such
person or in that portion of any public street, alley, or
other public property abutting such premises, shall
fail, refuse, or neglect to comply with the provisions
of this section or upon receipt of notice so to comply
from the Authority Having Jurisdiction.
722.5 Where disposal facilities are abandoned
consequent to connecting any premises with the
public sewer, the permittee making the connection
shall fill all abandoned facilities as reqmred by the
Authority Having Jurisdiction within thirty (30) days
from the time of connecting to the pubUc sewer.
723.0 Building Sewer Test.
Building sewers shall be tested by plugging the end
of the building sewer at its points of coimection with
the pubHc sewer or private sewage disposal system
and completely filling the building sewer with water
from the lowest to the highest point thereof, or by
approved equivalent low-pressure air test. The
building sewer shall be watertight at all points.
724.0 [AGR] Meat and Poultry Processing Plant
Drainage
724. 1 The drainage and plumbing systems must permit
the quick runoff of all luater from plant buildings, and of
surface water around the plant buildings, and of surface
water around the plant and on the premises; and all such
water shall be disposed of in such a manner as to prevent a
nuisance or health hazard.
724.2 Toilet soil lines shall be separated from house
drainage lines to a point outside the building unless an
automatic backwater check valve is installed to prevent
backflow. Drainage from toilet bowls and urinals shall not
be discharged into a grease catch basin, nor shall such
drainage be permitted to enter the sewer lines at a point
where there might be a possibility of such drainage
backing up and flooding the floor of the building.
725.0 [AGR] Collection Center and Facilities
Drainage. Drainage and plumbing systems shall meet the
requirements of Section 724.1.
726.0 [AGR] Drainage and Plumbing, General
726.1 The outer premises of every official establishment,
including docks, areas where cars and other vehicles are
loaded, driveways, approaches, yards, pens and alleys,
shall be drained.
726.2 Toilet soil lines shall be separated from house
drainage lines to a point outside the building, and
drainage from toilet boiols and urinals shall not be
discharged into a grease catch basin.
140
SANITARY DRAINAGE 727.0-727.1
727.0 [OSHPP 1] Emergency Sanitary Drainage
727. 1 For acute care hospital facilities required to meet
NPC-5, an on site emergency holding tank(s) sufficient to
store 150 gallons (567.9L) (based on 50 gallons/day/bed
for 72 hours) of waste water per licensed bed shall be
provided. The emergency holding tanks shall have fittings
to allow for transfer of the waste to other disposable
sources, such as tank trucks.
Exceptions:
(1) With the licensing agency approval of a water
rationing plan, the emergency waste water
holding capacity may he computed based on the
approved water rationing plan to provide for 72
hours of operation.
(2) With the approval of the Office of the licensing
agency, hook-ups that allow for the use of
transportable means of waste water disposal may
be provided in lieu of on-site storage.
141
2007 CALIFORNIA PLUMBING CODE
142
CHAPTER 8
INDIRECT WASTES
801.0 Indirect Wastes.
801.1 Alrgap or Airbreak Required. All indirect
waste piping shall discharge into the building
drainage system through an airgap or airbreak as set
forth in this code. Where a drainage airgap is
required by this code, the rrunimuin vertical distance
as measured from the lowest point of the indirect
waste pipe or the fixture outlet to the flood-level rim
of the receptor shall be not less than one (1) inch
(25.4 mm).
801.2 Food and Beverage Handling Establishments.
Establishments engaged in the storage, preparation,
seUing, serving, processing, or oflier handling of food
and beverage involving the following equipment tliat
requires drainage shall provide indirect waste piping
for refrigerators, refrigeration coUs, freezers, waUc-in
coolers, iceboxes, ice-making machines, steam tables,
egg boilers, coffee urns and brewers, hot-and-cold
drink dispensers, and similar equipment.
801.2.1 Except for refrigeration coils and ice-
making machines, the minimum size of the
indirect waste pipe shall not be smaller than the
drain on the unit, but shall not be smaller than
one (1) inch (25 mm), and the maximum
developed length shall not exceed fifteen (15)
feet (4,572 mm). Indirect waste pipe for ice-
making machines shall not be less tlian the drain
on the unit, but shall not be less than three-
quarters (3/4) inch (20 mm).
801 .2.2 For walk-in coolers, floor drains may be
connected to a separate drainage line discliarging
into an outside receptor. The flood-level rim of
flie receptor shall be a minimum of six (6) jinches
(152 mm) lower than tlie lowest floor drain. Sucli
floor drains shall be trapped and individually
vented. Cleanouts shall be provided at every
ninety (90) degree (1.6 rad) turn and shall be
accessibly located. Such waste shall discharge
fluough an airgap or airbreak into a trapped aiTd
vented receptor, except that a fuU-size airgap is
required where flie indirect waste pipe may be
imder vacuum.
801 .2.3 Food-preparation sinks, steam kettles,
potato peelers, ice cream dipper wells, and
similar equipment shall be indirectly connected
to the drainage system by means of an airgap.
Bins, sinks, and other equipment having
drainage connections and used for flie storage of
unpackaged ice used for human ingestion, or
used in direct contact with ready-to-eat food,
shall be indirectly connected to the drainage
system by means of an airgap. Each indirect
waste pipe from food-handling fixtures or
equipment shall be separately piped to the
indirect waste receptor and shall not combine
with other indirect waste pipes. The piping from
the equipment to the receptor shall not be
smaller than the drain on the miit, and it shall
not be smaller than one-half (1/2) iiich (15 mm).
801.3 Bar and Fountain SInIc Traps. Where the
sink in a bar, soda fountain, or counter is so located
tliat file trap serving the sink cannot be vented, the
sink drain shall discharge through an airgap or
airbreak (see Section 801.2.3) into an approved
receptor that is vented. The developed length from
the fixture outlet to the receptor shall not exceed five
(5) feet (1524 mm).
801.4 Connections from Water Distribution
System. Indirect waste connections shall be
provided for drains, overflows, or relief pipes from
potable water pressure tanks, water heaters, boilers,
and similar equipment that is connected to the
potable water distribution system. Such indirect
waste connections shall be made by means of a
water-distribution airgap constructed in accordance
with Table 6-3.
801.5 Sterilizers. Lmes, devices, or apparatus such
as stills, sterilizers, and similar equipment requiring
waste connections and used for sterile materials shall
be indirectly coraiected by means of an airgap. Each
such indirect waste pipe shall be separately piped to
the receptor and shall not exceed fifteen (15) feet
(4,572 mm). Such receptors shall be located in the
same room.
801.6 Drip or Drainage Outlets. Appliances, devices,
or apparatus not regularly classed as plumbing
fixtures, but which have drip or drainage outlets,
may be di-ained by indirect waste pipes discharging
into an open receptor through either an airgap or
ail-break (see Section 801.2.1).
802.0 Approvals.
No plumbing fixtures served by indirect waste pipes
or receiving discharge therefrom shall be installed
until first approved by the Authority Having
Jurisdiction.
143
803.0 - 808.0
2007 CALIFORNIA PLUMBING CODE
803.0 Indirect Waste Piping.
Except as hereinafter provided, the size and
construction of indirect waste piping shall be in
accordance with other sections of this code
applicable to drainage and vent piping. No vent
from indirect waste piping shall combine with any
sewer-connected vent, but shall extend separately to
the outside air. Indirect waste pipes exceeding five
(5) feet (1524 mm), but less than fifteen (15) feet
(4,572 mm) in length shall be directly trapped, but
such traps need not be vented.
Indirect waste pipes less than fifteen (15) feet
(4,572 mm) in length shall not be less than the
diameter of the drain outlet or tailpiece of the fixture,
appliance, or equipment served, and in no case less
than one-half (1/2) inch (15 mm) in size. Angles and
changes of direction in such indirect waste pipes
shall be provided with cleanouts so as to permit
flushing and cleaning.
804.0 indirect Waste Receptors.
804.1 All plumbing fixtures or other receptors
receiving the discharge of indirect waste pipes shall be
approved for the use proposed and shall be of such
shape and capacity as to prevent splashing or flooding
and shall be located where they are readily accessible
for inspection and cleaning. No standpipe receptor for
any clothes washer shall extend more Ihan thirty (30)
inches (762 mm), nor less than eighteen (18) inches
(457 mm) above its trap. No trap for any clothes
washer standpipe receptor shall be installed below the
floor, but shall be roughed in not less than six (6)
inches (152 mm) and not more than eighteen (18)
inches (457 rrmi) above the floor. No indirect waste
receptor shall be installed in any toUet room, closet,
cupboard, or storeroom, nor in any other portion of a
building not in general use by the occupants thereof;
except standpipes for clothes washers may be
installed in toilet and bathroom areas when the
clothes washer is installed in the same room.
804.2 Where water service connections are installed
for a clothes washer, an approved method of waste
disposal shall be provided.
805.0 Pressure Drainage Connections.
Indirect waste cormections shall be provided for
drains, overflows, or relief vents from the water
supply system, and no piping or equipment carrjnng
wastes or producing wastes or other discharges
under pressure shall be directly cormected to any
part of the drainage system.
The foregoing shall not apply to any approved
sump pump or to any approved pressure-wasting
plumbing fixture or device when the Authority
Having Jurisdiction has been satisfied that the
drainage system is adequately sized to accommodate
the anticipated discharge thereof.
806.0 Steriie Equipment.
Appliances, devices, or apparatus such as stills,
sterilizers, and similar equipment requiring water
and waste and used for sterile materials shall be
drained through an airgap.
807.0 Appliances.
807.1 Appliances, devices, equipment, or other
apparatus not regularly classed as pliimbing fixtures,
which are equipped with pumps, drips, or drainage
outlets, may be drained by indirect waste pipes
discharging into an approved type of open receptor.
807.2 When the condensate waste from air-
conditioning coils discharges by direct connection to
a lavatory tailpiece or to an approved accessible inlet
on a bathtub overflow, the connection shall be
located in the area controlled by the same person
controlling the air-conditioned space.
807.3 When undiluted condensate waste from a fuel-
burning condensing appliance is discharged into the
drainage system, the material in the drainage system
shall be cast iron, galvanized iron, plastic, or other
materials approved for this use.
Exceptions:
(1) When the above condensate is discharged to
an exposed fixture tailpiece and trap, such
tailpiece and trap may be brass.
(2) Any materials approved in Section 701.0
may be used when data is provided that the l
condensate waste is adequately diluted. |
807.4 No domestic dishwashing machine shall be
directly connected to a drainage system or food
waste disposer without the use of an approved
dishwasher airgap fitting on the discharge side of the
dishwashing machine. Listed airgaps shall be
installed with the flood-level (FL) marking at or
above the flood level of the sink or drainboard,
whichever is higher.
808.0 Cooling Water.
When permitted by the Authority Having
Jurisdiction, clean running water used exclusively as a
cooling medium in an appliance, device, or apparatus
may discharge into the drainage system through the
inlet side of a fixture trap in the event that a suitable
fixture is not available to receive such discharge. Such
trap connection shall be by means of a pipe connected
to the inlet side of an approved fixture trap, the upper
end terminating in a fuimel-shaped receptacle set
144
INDIRECT WASTES
808.0-811.2
adjacent, aiid not less than six (6) inches (152 mm)
above tlie overflow rim of Hhe fixture,
fliereto when tlae normal water level of such boiler or
boilers is reduced riot less tlian four (4) indies (102 mm).
809.0 Drinking Fountains.
Drinking fountains may be installed with indirect
wastes.
810.0 Steam and IHot Water Drainage Condensers
and Sumps.
81 0.1 No steam pipe shall be directly connected to
any part of a plumbing or drainage system, nor shall
any water having a temperature above one hundred
and forty (140)°F (60°C) be discharged under
pressure directly into any part of a drainage system.
Pipes from boilers shall discharge by means of
indirect waste piping, as determined by the
Authority Having Jurisdiction or the boiler
manufacturer's recommendations. Such pipes may
be indirectly connected by discharging into an open
or closed condenser or an intercepting sump of an
approved type that will prevent the entrance of
steam or such water under pressure into the
drainage system. All closed condensers or sumps
shall be provided with a vent tliat shall be taken off
the top and extended separately, full size above the
roof. All condensers and sumps shall be properly
trapped at tlie outlet with a deep seal trap extending
to wifliin six (6) inches (152 mm) of the bottom of the
tank. Tlie top of flie deep seal trap shall have a tliree-
fourths (3/4) inch (19.1 mm) opening located at the
highest point of the trap to serve as a siphon breaker.
Outlets shall be taken off from the side in such a
manner as to allow a waterline to be maintained that
will permanently occupy not less tlian one-half (1/2)
the capacity of the condenser or sump. All inlets
shall enter above the waterline. Wearing plates or
baffles shall be installed in the tank to protect the
shell. The sizes of the blowoff line inlet, the water
outlets, and the vent shall be as shown in Table 8-1.
The contents of condensers receiving steam or hot
water under pressure must pass through an open
sump before entering tlie drainage system.
81 0.2 Sumps, condensers, or intercepting tanks that
are constructed of concrete shall have walls and
bottom not less than four (4) inches (102 mm) in
thickness, and the inside shall be cement plastered
not less than one-half (1/2) inch (12.7 mm) in
thickness. Condensers constructed of metal shall be
not less than No. 12 U.S. standard gauge (0.109 incli)
(2.77 mm), and all such metal condensers shall be
-protected from external corrosion by an approved
bituminous coating.
81 0.3 Sumps and condensers sliaU be provided with
suitable means of access for cleaning and shall
contain a volume of not less than twice the volume of
water removed from the boiler or boilers connected
TABLE 8-1
Pipe Connections in Blowoff
Condensers and Sumps
Boiler Blowoff
Water Outlet
Vent
3/4 in.* (20 mm) 3/4 in.* (20 mm) 2 in. (50 mm)
lin. (25 mm) lin. (25 mm) 2-1/2 in. (65 mm)
1-1/4 in. (32mm) 1-1/4 in. (32mm) Sin. (SOnmi)
1-1/2 in. (40 mm) 1-1/2 in. (40 mm) 4 in. (100 mm)
2 in. (SOinm) 2 in. (50 mm) 5 in. (125 mm)
2-1/2 in. (65 mm) 2-1/2 in. (65 mm) 6 in. (150 mm)
*To be used only with boilers of 100 square feet (9.29
m^) of heating surface or less.
810.4 Strainers. Every indirect waste interceptor
receiving discharge-containing particles that would
clog the receptor drain shall have a readily
removable beehive strainer.
811.0 Chemical Wastes.
81 1 .1 Chemical or industrial liquid wastes that are
likely to damage or increase maintenance costs on the
sanitary sewer system, detrimentally affect sewage
treatment, or contaminate surface or subsurface waters
shall be pretreated to render them innocuous prior to
discharge into a drainage system. Detailed plans and
specifications of the pretreatment facilities shall be
required by ti.ie Aufliority Having Jurisdiction.
Piping conveying industrial, chemical, or
process wastes from their point of origin to sewer-
cormected pretreatment facilities shall be of such
material and design as to adequately perform its
intended function to flie satisfaction of flie Authority
Having Jurisdiction. Dramage discharge piping from
pretreatment facilities or interceptors shall conform
to standard drainage installation procedures.
Copper tube shall not be used for chemical or
industrial wastes as defmed in this section.
81 1 .2 Eacli waste pipe receiving or intended to receive
the discharge of any fixture into which acid or
corrosive chemical is placed, and each vent pipe
connected thereto, shall be constructed of PP, PVDF, |
diemical-resistant glass, liigli-silicon iron pipe, or lead " ^
pipe witli a wall thickness of not less than oiie-eighth
(1/8) inch (3.2 rnm); an approved type of ceramic
glazed or unglazed vitrified clay; or other approved
corrosion-resistant materials.
145
811.3-814.3
2007 CALIFORNIA PLUMBING CODE
811.3 All jointing materials shall be of approved
tj^e and quality.
811.4 Wherever practicable, all piping shall be
readily accessible and installed with the maximum of
clearance from other services.
81 1 .5 The owner shall make and keep a permanent
record of the location of all piping and venting
carrying chemical waste.
81 1 .6 No chemical vent shall intersect vents for other
services.
811.7 Chemical wastes shall be discharged in a
manner approved by the Authority Having
Jurisdiction.
811.8 The provisions in this section relative to
materials and methods of construction shall not
apply to installations such as photographic or X-ray
dark rooms or research or control laboratories
where' minor amounts of adequately diluted
chemicals are discharged.
812.0 Clear Water Wastes.
Water lifts, expansion tanks, cooling jackets,
sprinkler systems, drip or overflow pans, or similar
devices that discharge clear wastewater into the
building drainage system shall discharge through an
indirect waste.
813.0 Swimming Pools.
Pipes carrying wastewater from swimming or
wading pools, including pool drainage and
backwash from filters, shall be installed as an
indirect waste. Where a pump is used to discharge
waste pool water to the drainage system, the pump
discharge shall be installed as an indirect waste.
814.0 Condensate Wastes and Control.
814.1 Condensate Disposal. Condensate from air
washers, air-cooling coils, fuel-burning condensing
appliances, the overflow from evaporative coolers,
and similar water-supplied equipment or similar air-
conditioning equipment shall be collected and
discharged to an approved plumbing fixture or
disposal area. If discharged into the drainage system,
equipment shall drain by means of aii indirect waste
pipe. The waste pipe shall have a slope of not less
than 1/8 inch per foot (10.5 mm/m) or one percent
slope and shall be of approved corrosion-resistant
material not smaller than the outlet size as required
in either Section 310.3 or 310.4 for air-cooling coils or
condensing fuel-burning appliances, respectively.
Condensate or wastewater shall not drain over a
public way.
81 4.2 Size. Air-conditioning condensate waste pipes
shall be independent of any drainage and waste
system and shall not be smaller than shown in Table
8-2.
TABLE 8-2
Minimum Condensate Pipe Size
Equipment Capacity
Minimum Condensate
in Tons of
Pipe Diameter
Refrigeration (l<W)
in Inches
(mm)
Up to 20 (Up to 70.34)
3/4
(20)
21-40 (73.85-140.67)
1
(25)
41-90 (144.19-316.6)
1-1/4
(32)
91-125 (320.03-439.6)
1-1/2
,(40), -. .
126-250 (443.12-879.2)
2
(50) ...
The size of condensate waste pipes may be for
one unit or a combination of units, or as
recommended by the manufacturer. The capacity of
waste pipes assumes a one-eighth (1/8) inch per foot
(10.5 mm/m) or one percent slope, with the
following pipe conditions:
Outside Air -20%
DB WB
90°F 73°F
(32°C) (23°C)
Room Air -80%
DB WB
75°F 62.5°F
(24°C) (17°)
Condensate drain sizing for other slopes or other
conditions shall be approved by the Authority
Having Jurisdiction.
Air-conditioning waste pipes shall be con-
structed of materials specified in Chapter 7.
814.3 Point of Discliarge. Air-conditioning
condensate waste pipes shall connect indirectly to the
drainage system tiirough an airgap or airbreak to a
properly trapped and vented receptors dry wells,
leach pits, or the tailpiece of plumbing fixtures.
Condensate waste shall not drain over a public
way.
146
CHAPTER 9
VENTS
901.0 Vents Required.
Each plumbing fixture trap, except as otherwise
provided in this code, shall be protected against
siphonage and back-pressure, and air circulation
shall be ensured throughout all parts of the drainage
system by means of veiit pipes installed in
accordance with the requirements of this chapter and
as otherwise required by this code.
902.0 Vents Not Required.
902.1 Vent piping may be omitted on an inter-
ceptor when such interceptor acts as a primary
settling tank and discharges through a horizontal
indirect waste pipe into a secondary interceptor.
The second interceptor shall be properly trapped
and vented.
902.2 Traps serving sinks that are part of the
equipment of bars, soda fountains, and counters
need not be vented when the location and
construction of such bars, soda fountains, and
counters is such as to make it impossible to do so.
When such conditions exist, said sinks shall
discharge by means of approved indirect waste pipes
into a floor sink or other approved type of receptor.
903.0 IVIaterlais.
903.1 Vent pipe shall be cast iron, galvanized steel,
galvaiuzed wrought iron, copper, brass. Schedule 40
ABS DWV, Schedule 40 PVC DWV, stainless steel
304 or 316L (stainless steel 304 pipe and fittings shall
not be installed underground and shall be kept at
least six inches (152 mm) aboveground), or other
approved materials having a smooth and uniform
bore except that:
903.1.1 No galvanized wrought-iron or
galvanized steel pipe shaU be used undergroimd
and shall be kept at least six (6) inches (152 mm)
abovegrotind.
903.1.2 ABS and PVC DWV piping installations
shall be installed in accordance with IS 5, IS 9,
and Chapter 15 "Firestop Protection." Except for
individual single-family dwelling units,
materials exposed within ducts or plenums shall
have a flame-spread index of not more than 25
and a smoke-developed index of not more than
50 when tested in accordance with the Test for
Surface-Burning Characteristics of the Building
Materials (see the Building Code standards
based on ASTM E-84 and ANSI/UL 723).
903.1.2.1 [For OSHPD 1,2, 3 & 4] ABS and
FVC installations are not allowed.
903.1.3 [ HCD 1 & HCD 2] ABS or PVC installa-
tions are limited to not more than two stories of areas
of residential accommodation.
903.2 Use of Copper Tubing.
903.2.1 Copper tube for imderground drainage
and vent piping shall have a weight of not less
than that of copper drainage tube type DWV.
903.2.2 Copper tube for aboveground drainage
and vent piping shall have a weight of not less
than that of copper drainage tube type DWV.
903.2.3 Copper tube shall not be used for
chemical or industrial wastes as defined in
Section 811.0.
903.2.4 All hard-drawn copper tubing, in
addition to the required incised marking, shall
be marked in accordance with either ASTM
B306, Copper Drainage Tube (DWV), or ASTM
BBS Seamless Copper Water Tube as listed in
Table 14-1. The colors shall be: Type K, green;
Type L, blue; Type M, red; Type DWV, yellow.
903.3 Vent fittings shall be cast iron, galvanized
malleable iron or galvanized steel, copper, brass,
ABS, PVC, stainless steel 304 or 316L, or other |
approved materials, except that no galvanized
malleable iron or galvanized steel, or 304 stainless
steel shall be used underground and shall be kept at
least six (6) inches (152 mm) aboveground. Stainless
steel 304 pipe and fittings shall not be installed
undergroimd and shall be kept at least 6 inches (152
mm) abovegroimd.
903.3.1 [HCD 1 & HCD 2] All malleable iron vents
shall he galvanized.
903.4 Changes in direction of vent piping shall be
made by the appropriate use of approved fittings,
and no such pipe shall be strained or bent. Burred
ends shall be reamed to the fuU bore of the pipe.
904.0 Size of Vents.
904.1 The size of vent piping shall be determined
from its length and the total number of fixture units
connected thereto, as set forth in Table 7-5. The
diameter of an individual vent shall not be less than
147
904.1 - 906.7
2007 CALIFORNIA PLUMBING CODE
one and one-fourth (1-1/4) inches (32 mm) nor less
than one-half (1/2) the diameter of the drain to
which it is connected. In addition, the drainage
piping of each building and each connection to a
public sewer or a private sewage disposal system
shall be vented by means of one or more vent pipes,
the aggregate cross-sectional area of which shall not
be less than that of the largest required building
sewer, as determined from Table 7-5. Vent pipes
from fixtures located upstream from pumps, ejectors,
backwater valves, or other devices that in any way
obstruct the free flow of air and other gases between
the building sewer and the outside atmosphere shall
not be used for meeting the cross-sectional area
venting requirements of this section.
Exception: When connected to a common
biiilding sewer, the drainage piping of two (2) or
more btiildings located on the same lot and under
one (1) ownership may be vented by means of
piping sized in accordance with Table 7-5,
provided the aggregate cross-sectional area of all
vents is not less than that of the largest required
common building sewer.
904.2 No more than one-third (1/3) of the total
permitted length, per Table 7-5, of any minimum-
sized vent shall be installed in a horizontal position.
Exception: When a minimum-sized vent is
increased one (1) pipe size for its entire length,
the maximum length limitation does not apply.
905.0 Vent Pipe Grades and Connections.
905.1 All vent and branch vent pipes shall be free
from drops or sags, and each such vent shall be level
or shall be so graded and connected as to drip back
by gravity to the drainage pipe it serves.
905.2 Where vents connect to a horizontal drainage
pipe, each vent pipe shall have its invert taken off
above the drainage centerline of such pipe
downstream of the trap being served.
905.3 Unless prohibited by structural conditions,
each vent shall rise vertically to a point not less than
six (6) inches (152 mm) above the flood-level rim of
the fixture served before offsetting horizontally, and
whenever two or more vent pipes converge, each
such vent pipe shall rise to a point at least six (6)
inches (152 mm) in height above the flood-level rim
of the plumbing fixture it serves before being
connected to any other vent. Vents less than six (6)
inches (152 mm) above the flood-level rim of the
fixture shall be installed with approved drainage
fittings, material, and grade to the drain.
905.4 All vent pipes shall extend vmdiminished in
size above the roof, or shall be reconnected with a
soil or waste vent of proper size.
905.5 The vent pipe opening from a soil or waste
pipe, except for water closets and similar fixtures,
shall not be below the weir of the trap.
905.6 Two (2) fixtures may be served by a common
vertical pipe when each such fixture wastes separately
into an approved double fitting having inlet openings
at the same level.
906.0 Vent Termination.
906.1 Each vent pipe or stack shall extend through
its flashing and shall terminate vertically not less
than six (6) inches (152 mm) above the roof nor less
than one (1) foot (305 mm) from any vertical surface.
906.2 Each vent shall terminate not less than ten (10)
feet (3048 mm) from, or at least three (3) feet (914
mm) above, any openable window, door, opening,
air intake, or vent shaft, nor less than three (3) feet
(914 mm) in every direction from any lot line, alley
and street excepted.
906.2.1 [OSHPD 1,2, 3 & 4] Each vent pipe shall
terminate not less than twenty-five (25) feet (7620
mm) from any air intake or vent shaft.
906.3 Vent pipes shall be extended separately or
combined, of full required size, not less than six (6)
inches (152 mm) above the roof or fire wall. Flagpoling
of vents shall be prohibited except where the roof is
used for purposes other than weather protection. All
vents within ten (10) feet (3048 mm) of any part of the
roof that is used for such other purposes shall extend
not less than seven (7) feet (2,134 mm) above such roof
andshaU be securely stayed.
906.4 Vent pipes for outdoor installations shall
extend at least ten (10) feet (3,048 mm) above the
sxirroxmding grotmd and shall be securely supported.
906.5 Joints at the roof around vent pipes shall be
made watertight by the use of approved flashings or
flashing material.
906.6 Lead. See Table 14-1. Sheet lead shall be not
less than the following:
For safe pans - not less than four (4) pounds per
square foot (19.5 kg/m^) or 1/16-inch (1.6 mm) thick.
For flashings or vent ternxLnals - not less than
three (3) pounds per square foot (14.7 kg/m^) or 1.2
mm thick.
Lead bends and lead traps shall not be less than
one-eighth (1/8) inch (3.2 mm) wall thickness.
906.7 Frost or Snow Closure. Where frost or snow
closure is likely to occur in locations having minimum
design temperature below 0°F (-17.8°C), vent
terminals shall be a minimum of two (2) inches (51
mm) in diameter, but in no event smaller than the
required vent pipe. The change in diameter shall be
z'
148
VENTS
906.7-910.1
made inside the btulding at least one (1) foot (305 mm)
below tlie roof in an insulated space and terminate not
less than ten (10) iridies (254 mm) above tlie roof, or as
required by tlie Aufliority Having Jurisdiction.
907.0 Vent Stacks and Relief Vents.
907.1 Each drainage stack that extends ten (10) or
more stories above the building drain or other
horizontal drain, shall be served by a parallel vent
stack, wliich shall extend undiminished in size from
its upper terminal and connect to the drainage stack at
or immediately below tlie lowest fixture drain. Each
sucli vent stack shall also be connected to the drainage
stack at each fifth floor, counting down from the
uppermost fixture drain, by means of a yoke vent, the
size of wliich shall be not less in diameter than eitlier
tlie drainage or the vent stack, wliichever is smaller.
907.2 The yoke vent cormection to the vent stack
shall be placed not less than forty-two (42) inches
(1,067 mm) above the floor level, and the yoke vent
comiection to tlie drainage stack shall be by means of
a wye-branch fitting placed below the lowest
drainage branch connection serving that floor.
908.0 Vertical Wet Venting.
908.1 Wet venting is limited to vertical drainage
piping receiving the discharge from the trap arm of
one (1) and two (2) fixture unit fixtures that also
serves as a vent for not to exceed four (4) fixtures,
All wet-vented fixtures shall be within the same
story; provided, further, that fixtures with a
continuous vent discharging into a wet vent shall be
witi-iin the same story as the wet-vented fixtures. No
wet vent shall exceed six (6) feet (1829 mm) in
developed length.
908.2 The vertical piping between any two (2)
consecutive inlet levels shall be considered a wet-
vented section. Each wet-vented section shall be a
minimum of one (1) pipe size larger than the
required minimum waste pipe size of the upper
fixture or shall be one (1) pipe size larger than the
required miniinum pipe size for the sum of the
fixture units served by such wet-vented section,
wliichever is larger, but in no case less than two (2)
inches (51 mm).
908.3 Common vent sizing shall be the sum of the
fixture units served but, in no case, smaller than the
minimum vent pipe size required for any fixture
served, pr by, Section 904.0.
908.4 Bathroom Wet Venting.
908.4.1 Where permitted. Any combination of
fixtures within one (1) or two (2) bathrooms
located on the same floor level in dwellings and
guest rooms shall be permitted to be vented by a
wet vent. The wet vent shall be considered the
vent for the fixtures and shall extend from the
comiection of tlie dry vent alorig the direction of
the flow in the drain pipe to the most
downstream fixture drain connection to the
horizontal branch drain. Only the fixtures
witliin the batliroom(s) shall connect to the wet-
vented horizontal branch drain. Any additional
fixtures shall discharge downstream of the wet
vent system and be conventionally vented.
908.4.2 Vent Connection. The dry vent
connection to tlie wet vent shall be an individual
vent or common vent for the lavatory, bidet,
shower, or bathtub.
908.4.3 Size. Tlie wet vent shall be sized based
on the fixture unit discharge into the wet vent.
The wet vent shall be a minium size of 2 inches
for 4 dfu or less, and 3 inches for more than 4 dfu.
909.0 Special Venting for Island Fixtures.
Traps for island sinks and similar equipment shall be
roughed in above the floor and may be vented by
extending the vent as liigh as possible, but not less
than the drainboard height and then returning it
downward and connecting it to the horizontal sink
drain immediately downstream from the vertical
fixture drain. The return vent shall be connected to the
horizontal drain through a wye-branch fitting and
shall, in addition, be provided with a foot vent taken
off the vertical fixture vent by means of a wye brancli
immediately below the floor and extending to the
nearest partition and then through the roof to the
open air, or may be connected to otlier vents at a point
not less than six (6) inches (152 mm) above the flood-
level rim of the fixtures served. Drainage fittings shall
be used on all parts of the vent below tlie floor level,
and a minimum slope of one-quarter (1/4) inch per
foot (20.9 mm/m) back to the drain shall be
maintained. The return bend used under the
drainboard shall be a one (1) piece fitting or an
assembly of a forty-five (45) degi-ee (0.79 rad), a ninety
(90) degree (1.6 rad), and a forty-five (45) degree (0.79
rad) elbow in tlie order named. Pipe sizing shall be as
elsewhere required in fliis code. Tlie island sink drain,
upstream of the returned vent, shall serve no other
fixtures. An accessible cleanout shall be installed in
the vertical portion of tiie foot vent.
910.0 Combination Waste and Vent Systems.
91 0.1 Combination waste and vent systems shall be
permitted only where structural conditions preclude
149
910.1-910.7
2007 CALIFORNIA PLUMBING CODE
the installation of conventional systems as otherwise
prescribed by this code.
910.2 Plans and specifications for each combination
waste and vent system shall first be approved by the
Authority Having Jurisdiction before any portion of
any such system is installed.
910.3 Each combination waste and vent system, as
defined in Chapter 2, shall be provided with a vent
or vents adequate to ensure free circulation of air.
Any branch more than fifteen (15) feet (4,572 mm)
in length shall be separately vented in an approved
marmer. The minimum area of any vent installed in
a combination waste and vent system shall be at
least one-half (1/2) the inside cross-sectional area
of the drain pipe served. The vent cormection shall
be downstream of the uppermost fixture.
91 0.4 Each waste pipe and each trap in any such
system shall be at least two (2) pipe sizes larger than
the sizes reqtiired by Chapter 7 of this code, and at
least two (2) pipe sizes larger than any fixture
tailpiece or connection.
910.5 No vertical waste pipe shall be used in any
such system, except the tailpiece or connection
between the outlet of a plumbing fixture and the
trap. Such tailpieces or connections shall be as short
as possible, and in no case shall exceed two (2) feet
(610 mm).
Exception: Branch lines may have forty-five (45)
degree (0.79 rad) vertical offsets.
910.6 An accessible cleanout shall be installed in
each vent for the combination waste and vent
system. Cleanouts may not be reqtiired on any wet-
vented branch serving a single trap when the fixttire
tailpiece or connection is not less tiian two (2) inches
(50 mm) in diameter and provides ready access for
cleaning through the trap.
910.7 No water closet or urinal shall be installed on
any such system. Other one (1), two (2), or three (3)
unit fixtures remotely located from the sanitary
system and adjacent to a combination waste and
vent system may be connected to such system in the
conventional manner by means of waste and vent
pipes of regular sizes, providing that the two (2) pipe
size increase required in Section 910.4 is based on the
total fixture imit load connected to the system.
Note:
See Appendix B of this code for explanatory notes on
the design of combination waste and vent systems.
150
CHAPTER 10
TRAPS AND INTERCEPTORS
1001.0 Traps Required.
1001.1 Each plumbing fixture, excepting those
having integral traps or as permitted in Section
1001.2, shall be separately trapped by an approved
t5^e of waterseal trap. Not more than one (1) trap
shaU be permitted on a trap arm.
1 001 .2 One (1) trap may serve a set of not more than
tliree (3) single compartment sinks or laundry tubs of
the same depth or three (3) lavatories immediately
adjacent to each other and iii the same room if the
waste outlets are not more than thirty (30) inches
(762 mm) apart and the trap is centrally located
when three (3) compartments are installed.
1001 .3 No food waste disposal unit shall be installed
with any set of restaurant, commercial, or industrial
sinks served by a single trap; each such food waste
disposal unit shaU be coimected to a separate trap.
Each domestic clothes washer and each laundry tub
shall be connected to a separate and independent
trap, except that a trap serving a laundry tub may
also receive the waste from a clothes washer set
adjacent thereto. No clothes washer or laimdry tub
shall be connected to any trap for a kitchen sink.
1001.4 The vertical distance between a fixture outlet
and the trap weir shall be as short as practicable, but
in no case shall the tailpiece from any fixture exceed
twenty-four (24) inches (610 mm) in length.
1002.0 Traps Protected by Vent Pipes,
1002.1 Each plumbing fixture trap, except as
otherwise provided in this code, shall be protected
against siphonage and back-pressure, and air
circulation shall be assured throughout all parts of
tlie drainage system by means of a vent pipe installed
in accordance with the requirements of tliis code.
1 002.2 Eacli fixture trap shall have a protecting vent so
located that the developed length of the trap arm from
the trap weir to the irmer edge of the vent shall be
within tlie distance given in Table 10-1, but in no case
less tlian two (2) times the diameter of flTe trap arm.
1 002.3 A trap arm may change direction without the
use of a cleanout when such change of direction does
not exceed ninety (90) degrees (1.6 rad). All
horizontal changes in direction of trap arms shall
comply with Section 706.3.
Exception: For trap arms three (3) inches (80
mm) in diameter and larger, the change of
direction shall not exceed one hundred and
thirty-five (135) degrees (2.36 rad) without the
use of a cleanout.
1002.4 The vent pipe opening from a soil or waste
pipe, except for water closets and similar fixtures,
shall not be below the weir of the trap.
TABLE 10-1
Horizontal Distance of Trap Arms
(Except for water closets and similar fixtures)*
Distance Distance
Trap Arm Trap to Vent Trap Arm Trap to Vent
Inches Feet Inches mm mm
1-1/4
2
6
32
762
1-1/2
3
6
40
1067
2
5
50
1524
3
6
80
1829
4 & larger
10
100 & larger
3048
Slope one-^fourth (1/4) inch
per
foot (20.9
mm/m)
*The developed length between the trap of a water closet or
similar fixtm'e (measured from tlie top of the closet ring [closet
flange] to the inner edge of the vent) and its vent shall not
exceed six (6) feet (1829 mm).
1003.0 Traps — Described.
1003.1 Each trap, except for traps within an
interceptor or similar device, shall be self-cleaning.
Traps for bathtubs, showers, lavatories, sinks,
laundry tubs, floor drains, urinals, drinking
foimtains, dental units, and similar fixtures shall be
of standard design and weight and shall be of ABS,
cast brass, cast iron, lead, PP, PVC, or other
approved material. An exposed and readily
accessible drawn-brass tubing trap, not less than 17
B&S Gauge (0.045 inch) (1.1 mm), may be used on
fixtures discharging domestic sewage.
Exception: Drawn-brass tubing traps shall not
be used for urinals. Each trap shall have the
manufacturer's name stamped legibly in the
metal of the trap, and each tubing trap shall
have tlie gauge of the tubing in addition to tlie
manufacturer's name. Every trap shall have a
smooth and tmiform interior waterway.
1003.2 No more than one (1) approved slip joint
fitting may be used on the outlet side of a trap, and
no tubing trap shall be installed without a listed
tubing trap adapter. Listed plastic trap adapters may
be used to comiect listed metal tubing traps.
151
1003.3-1010.0
2007 CALIFORNIA PLUMBING CODE
1 003.3 The size (nominal diameter) of a trap for a
given fixture shall be sufficient to drain the fixture
rapidly, but in no case less than nor more than one
(1) pipe size larger than given in Table 7-3. The
trap shall be the same size as the trap arm to which
it is connected.
1004.0 Traps — Prohibited.
No form of trap that depends for its seal upon the action
of movable parts shall be used. No trap that has
concealed interior partitions, except those of plastic,
glass, or similar corrosion-resisting material, shall be
used. "S" traps, beU traps, and crown-vented traps shall
be prohibited. No fixture shall be double trapped. Drum
and bottle traps shall be installed only for special
conditioris. No trap shall be installed without a vent,
except as otherwise provided in this code.
1005.0 Trap Seals.
Each fixture trap shall have a water seal of not less
than two (2) inches (51 mm) and not more than four
(4) inches (102 mm), except where a deeper seal is
found necessary by the Authority Having Jurisdiction.
Traps shall be set true with respect to their water
seals and, where necessary, they shall be protected
from freezing.
1006.0 Floor Drain Traps.
Floor drains shall connect into a trap so constructed
that it can be readily cleaned and of a size to serve
efficiently the purpose for which it is intended. The
drain inlet shall be so located that it is at all times in
full view. When subject to reverse flow of sewage or
liquid waste, such drains shall be equipped with an
approved backwater valve.
1007.0 Trap Seal Protection.
Floor drain or similar traps directly connected to the
drainage system and subject to infrequent use shaU
be protected with a trap seal primer, except where
not deemed necessary for safety or sanitation by the
Authority Having Jurisdiction. Trap seal primers
shall be accessible for maintenance.
intake shall be carried above grade and terminate in
a screened outlet located outside the building.
1009.0 Industrial interceptors (Clarifiers) and
Separators.
1009.1 Wlien Required. Interceptors (clarifiers)
(including grease, oil, sand interceptors [clarifiers],
etc.) shall be required by the Authority Having
Jurisdiction when they are necessary for the proper
handling of liquid wastes containing grease,
flammable wastes, sand, solids, acid or alkaline
substances, or other ingredients harmful to the
building drainage system, the public or private
sewer, or to public or private sewage disposal.
1009.2 Approval. The size, type, and location of each
interceptor (clarifier) or separator shall be approved
by the Authority Having Jurisdiction. Except where
otherwise specifically permitted, no wastes other
than those requiring treatment or separation shall be
discharged into any interceptor (clarifier).
1009.3 Design. Interceptors (clarifiers) for sand and
similar heavy solids shall be so designed and located
as to be readily accessible for cleaning and shall have
a water seal of not less than six (6) inches (152 mm).
1009.4 Relief Vent. Interceptors (clarifiers) shall be
so designed that they will not become air-bound if
closed covers are used. Each interceptor (clarifier)
shall be properly vented.
1009.5 Location. Each interceptor (clarifier) cover
shall be readily accessible for servicing and
maintaining the interceptor (clarifier) in working and
operating condition. The use of ladders or the
removal of bulky equipment in order to service
interceptors (clarifiers) shall constitute a violation of
accessibility. Location of all interceptors (clarifiers)
shall be shown on the approved biiilding plan.
1009.6 Maintenance of Interceptors. Interceptors
shall be maintained in efficient operating condition
by periodic removal of accumulated grease, scum,
oil, or other floating substances and solids deposited
in the interceptor.
1009.7 Disctiarge. The waste pipe from oil and sand
interceptors shall discharge as approved by the
Authority Having Jurisdiction.
1008.0 Building Traps.
Building traps shall not be installed except where
required by the Authority Having Jurisdiction. Each
building trap when installed shall be provided with
a cleanout and with a relieving vent or fresh-air
intake on the inlet side of the trap, which need not be
larger than one-half the diameter of the drain to
which it connects. Such relieving vent or fresh-air
1010.0 Slaugiiterliouses, Packing Establishments, etc.
Every fish, fowl, and animal slaughterhouse or
establishment; every fish, fowl, and meat packing or
curing establishment; every soap factory, tallow-
rendering, fat-rendering, and hide-curing establish-
ment shall be connected to and shall drain or
discharge into an approved grease interceptor
(clarifier).
152
TRAPS AND INTERCEPTORS
1010.1 -1014.1C
1010.1 [AGR] Meat and Poultry Processing Plants
1010.1.1 Drainage and Plumbing Systems.
Drainage and plumbing systems shall meet the
requirements of Section 724.0.
1010.1.1.1 Each floor drain shall be equipped
with a deep-seal trap.
1010.1.2 The plumbing shall be installed so as to
prevent sewage from backing up and flooding the
floor.
Exception: Floor drains in areas not regularly
washed down will be acceptable with deep-seal traps,
provided that such drains are connected to secondary
drainage systems discharging into a safe sink or basin
(air gap) thai is properly trapped and vented, and
that such drains accomplish the objectives and intent
of this section,
1010.1.3 Interceptor traps which are connected with
the sewer system shall not be near any edible
products department or in any area where products
are unloaded fivm or loaded into vehicles. To facilitate
cleaning, such traps shall have inclined bottoms and
be provided with suitable covers.
1010.2 [AGR] Collection Centers and Facilities.
All drains shall be properly installed with adequate deep-
sealed traps of the conventional "P," "U" or "S" type and
vents.
1010.3 [AGR] Horse Meat and Pet Food Establish-
ments. There shall be an efficient drainage and plumbing
system for the establishment and premises. All drains and
gutters shall be installed with traps and vents approved by
the Department.
1010.4 [AGR] Draining and Plumbing. There shall be
an efficient drainage and plumbing system for the plant
and premises.
1010.4.1 Drainage and Gutters, All drains and
gutters shall be properly installed with approved
traps and vents. The drainage and plumbing system
must permit the quick runoff of all water fivm plant
buildings, and of surface water around the plant on
the premises, and all such water shall be disposed of
in such a manner as to prevent a nuisance or health
hamrd.
1010.4.2 Sewage and Plant Waste. The sewer
system have adequate slope and capacity to remove
readily all waste from the various processing
operations and to minimize, or if possible, prevent
stoppage and surcharging of the system. When the
sewage disposal system is a private system which is
_"- _ required to be approved by a state or local health-
authority, the applicant shall furnish the admini-
strator a letter from the proper health authority
indicating that the sewage disposal system is
acceptable to such authority.
1 01 1 .0 Minimum Requirements for Auto Wasli Racks.
Every private or public wasli rack and/or floor or slab
used for cleaniiTg machinery or machine parts shall be
adequately protected against storm or surface water and
shall drain or discharge into an approved interceptor
(claiifier).
1012.0 Commercial and Industrial Laundries.
Laundry equipment in commercial and industrial
btiildings that does not have integral strainers shall
discharge into an interceptor having a wire basket or
similar device that is removable for cleaning and that
will prevent passage into the drainage system of
solids one-half (1/2) inch (12.7 mm) or larger in
maximum dimension, such as string, rags, buttons,
or other solid materials detrimental to the public
sewerage system.
1013.0 Bottling Establishments. Bottling plants
shall discharge their process wastes into an
interceptor that will provide for the separation of
broken glass or other solids, before discharging
liquid wastes into tlie drainage system.
1014.0 Grease Interceptors.
1014.1 Where it is determined by the Authority
Having Jurisdiction that waste pretreatment is
requked, an approved type of grease rnterceptor(s)
complying with the provisions of this section shall be
correctly sized and properly installed in grease waste
line(s) leading from sinks and drains, such as floor
drains and floor sinks and other fixtures or
equipment in serving establishments such as
restaurants, cafes, lunch couiiters, cafeterias, bars
and clubs, hotels, hospitals, saiiitariums, factory or
school kitchens, or other establishments where
grease may be introduced into the drainage or
sewage system in quantities that can effect line
stoppage or hinder sewage treatment or private
sewage disposal. A grease interceptor shall not be
required for individual dwelling units or for any
private living quarters. Water closets, uritials, and
other plumbing fixtures conveying human waste
shall not drain iiito or through tlie grease interceptor.
101 4.1 A [For OSHPD 1, 2, 3 & 4] The Authority
Having Jurisdiction the individual official, board,
department or agency authorized to administer and
enforce the sewage treatment system in the area of the
location of the health facility.
101 4.1 B [For OSHPD 1, 2, 3 & 4] Grease traps shall
not be installed in food preparation area of the kitchens.
101 4.1 C [For OSHPD 1,2, 3 & 4] Grease interceptors
shall be installed outside of the kitchen area in location
affording ease of maintenance and servicing.
153
1014.1 -1014.3
2007 CALIFORNIA PLUMBING CODE
1014.1.1 Each fixture discharging into a grease
interceptor shall be individually trapped and
vented in an approved manner.
1014.1.2 All grease interceptors shall be
maintained in efficient operating condition by
periodic removal of the accumulated grease and
latent material. No such collected grease shall be
introduced into any drainage piping or public or
private sewer. If the Authority Having Jxirisdic-
tion determines that a grease interceptor is not
being properly cleaned or maintained, the
Authority Having Jurisdiction shall have the
authority to mandate the installation of addi-
tional equipment or devices and to mandate a
maintenance program.
1014.1.3 Food Waste Disposal Units and
Disliwasliers. Unless specifically required or
permitted by the Authority Having Jurisdiction,
no food waste disposal unit or dishwasher shall
be connected to or discharge into any grease
interceptor. Commercial food waste disposers
shall be permitted to discharge directly into the
building's drainage system.
1014.2 Hydromeclianical Grease interceptors.
1014.2.1 Each plumbing fixture or piece of
eqtiipment connected to a hydromechanical grease
interceptor shall be provided with an approved
type of vented flow control installed in a readily
accessible and visible location. How control devices
shall be designed and installed so that the total flow
through such device or devices shall at no time be
greater than the rated flow of the grease interceptor.
No flow-control device having adjustable or
removable parts shall be approved. The vented
flow-control device shall be located such that no
system vent shall be between the flow-control and
the grease trap inlet. The vent or air inlet of the
flow-control device shall connect with the sanitary
■drainage vent system, as elsewhere required by ihis
code, or shall terminate through the roof of the
building, and shall not terminate to the free
atmosphere inside the building.
Exception: Listed grease interceptors with
integral flow controls or restricting devices
shall be installed in an accessible location in
accordance with the manufacturers'
instructions.
1014.2.2 The total capacity in gallons (L) of
fixtures discharging into any hydromechanical
grease interceptor shall not exceed two and one-
half (2-1/2) times the certified GPM (L/s) flow
rate of the interceptor as per Table 10^2.
For the purpose of this section, the term
"fixture" shall mean and include each plumbing
fixhire, appliance, apparatus, or other equipment
required to be connected to or discharged into a
grease interceptor by any provision of this section.
1 01 4.2.3 A vent shall be installed downstream
of hydromechanical grease interceptors in
accordance with the requirements of this code.
Table 10-2
l-iydromechanicai Grease Interceptor (i-1Gi)
Sizing Cliart*
DFU HGI FLOW (gpm)
L
8
20
10
25
13
35
20
50
35
75
172
100
216
150
342
200
428
250
576
350
720
500
*Based on intermittent potentially full flow in
drainage Hnes.
1014.3 Gravity Grease Interceptors. Required
gravity grease interceptors shall comply with the
provisions of Sections 1014.3.1 throvigh 1014.3.7.
1014.3.1 General.
The provisions of this section shall apply to the
design, construction, installation, and testing of
commercial kitchen gravity grease interceptors.
1014.3.2 Waste Dischiarge Requirements.
1 01 4.3.2.1 Waste discharge in establishments
from fixtures and equipment which may
contain grease, including but not limited to,
scullery sinks, pot and pan sinks, dishwashers,
soup ketfles, and floor drains located in areas
where grease-containing materials may exist,
may be drained into the sanitary waste
through the interceptor when approved by the
Authority Having Jurisdiction.
1014.3.2.2 Toilets, urinals, and other
similar fixtures shall not drain through the
interceptor.
1014.3.2.3 All waste shall enter the
interceptor through the inlet pipe orily.
1014.3.3 Design.
1014.3.3.1 Gravity Interceptors shall be
154
TRAPS AND INTERCEPTORS
Table 10-3 -1015.2
Table 10-3
Gravity Grease Interceptor Sizing
DFUs (1)
8
21 (3)
35
90 (3)
172
216
307 (3)
342
428
576
720
2112
2640
Interceptor Volume (2)
500 gallons
750 gallons
1,000 gallons
1,250 gallons
1,500 gallons
2,000 gallons
2,500 gallons
3,000 gallons
4,000 gallons
5,000 gallons
7,500 gallons
10,000 gallons
15,000 gallons
Notes
(1) The maximum allowable DFUs plimibed to the kitdaen drain Hnes (liat will be connected to (he grease interceptor.
(2) Tliis size is based on; tlie DFUs, tlie pipe size from this code; Table 7-5; Useful Tables for flow in half-full pipes (ref: Mohinder Nayyar Piping
Hnndboph 3rd Edition, 1992).
(3) Based on 30-rmnute retention time (ref.: Metcalf & Eddy, hic. Smnll and Decentralized Wastewater Management Systems, 3rd Ed, 1998). Rounded up
to nominal interceptor volume.
constructed hi accordance wife tlie applicable
standard in Table 14-1 or tlie design approved
by tlie Autliority Having Jurisdiction.
1014.3.4 Location.
1 01 4.3.4.1 Each grease interceptor shall be
so installed and connected that it shall be
at all times easily accessible for inspection,
cleaning, and removal of the intercepted
grease. A gravity grease interceptor
complying with lAPMO PS 80, shall not be
installed in any part of a building where
food is handled. Location of the grease
interceptor shall meet the approval of the
Authority Having Jurisdiction. ■
1 01 4.3.4.2 hiterceptors shall be placed as
close as practical to the fixtures they serve.
1014.3.4.3 Each business establishment for
which a gravity grease interceptor is
required shall have an interceptor which
shall serve only that establishment unless
otherwise approved by the Authority
Havmg Jurisdiction.
1014.3.4.4 Each gravity grease interceptor
shall be located so as to be readily accessible
to the equipment required for maintenance.
1014.3.5 Construction Requirements.
1014.3.5.1 Purpose. Gravity grease
' interceptors shall be designed to remove
grease from effluent and shall be sized in
accordance with this section. Gravity grease
hiterceptors shall also be designed to retahi
grease until accumulations can be removed by
pumping tlie hiterceptor. It is recommended
tliat a sample box be located at tlie outlet end
of all gravity grease interceptors so that the
Autliority Having Jurisdiction can periodi-
cally sample effluent quality.
1014.3.6 Sizing Criteria.
1014.3.6.1 Sizing. The volume of the
interceptor shall be determined by using
Table 10-3. If drahiage fixture units (DFUs)
are not known, the hiterceptor shall be sized
based on tlie maxhnum DFUs allowed for tlie
pipe size connected to the inlet of the
interceptor. Refer to Table 7-5, Drainage
Piphig, Horizontal.
1014.3.7 Abandoned Gravity Grease Interceptors.
Abandoned grease interceptors shall be pumped
and filled as requked for abandoned sewers and
sewage disposal facilities in Section 722.0.
1015.0 FOG (Fats, Oils, and Greases) Disposal
System.
1015.1 Purpose.
Tlie puipose of this section is to provide tlie necessary
criteria for the sizing, application, and histallation of
FOG disposal systems designated as a pretreatment or
disdiarge water quality compliance strategy.
1015.2 Scope.
FOG disposal systems shall be csonsidered
engineered systems and shall comply with the
requirements of section 301.2 of tliis code.
155
1015.3-1017.1
2007 CALIFORNIA PLUMBING CODE
1015.3 Components, Materials, and Equipment.
FOG disposal systems, including all components,
materials, and equipment necessary for the proper
function of the system, shall comply with sections
301.1.3 or 301.2 of this code.
1015.4 Sizing Application and installation.
FOG disposal systems shall be engineered, sized,
and installed in accordance with the manufacturers'
specifications and as specified in lAFMO PS 118-
2000, as listed in Chapter 14, Table 14-1 of this code.
1015.5 Performance.
FOG disposal systems shall be tested and certified as
described in lAPMO PS 118-2000, as listed in Chapter
14, Table 14-1 of this code, and other national
consensus standards applicable to FOG disposal
systems as discharging no more than lOOmg/L FOG.
1015.6 [For OSHPD 1,2, 3 & 4] Grease traps shall not
be installed in food preparation area of the kitchens.
1015.7 [For OSHPD 1, 2, 3 & 4] Grease Interceptors
shall be installed outside of the kitchen area in location
affording ease of maintenance and servicing.
Gravity Grease Interceptor Sizing Example:
Given: A restaurant with the following fixtures and
equipment.
one food preparation sink; three floor drains - one in the food
prep area, one in the grill area, and one receiving the indirect
waste from the ice machine; a mop sink; a dishwasher with a
maximum discharge flow rate of 20 gpm discharging into a
dedicated receptor; and two public restrooms, each with one
water closet and one lavatory.
Kitchen Drain Line DFU Count (from Table 7-3):
3 floor drains ® 2 DFUs each = 6 DFUs
Mop sink @ 3 DFUs each = 3 DFUs
Food prep sink ® 3 DFUs each = 3 DFUs
Dishwasher @ 4 DFUs (Table 7-4) = 4 DFUs
Total 16 DFUs
Using Table 10-3, the grease interceptor wUl be sized at 750
gallons.
1016.0 Sand Interceptors.
1016.1 Where Required.
1016.1.1 Whenever the discharge of a fixture or
drain may contain solids or semi-solids heavier
than water that woiild be harmful to a drainage
system or cause a stoppage within the system,
the discharge shall be tfirough a sand interceptor.
Multiple floor drains may discharge into one
sand interceptor.
1016.1.2 Sand interceptors are required when-
ever the Authority Having Jurisdiction deems it
advisable to have a sand interceptor to protect
the drainage system.
1016.2 Construction and Size.
Sand interceptors shall be built of brick or concrete,
prefabricated coated steel, or other watertight material.
The interceptor shall have an interior baffle for full
separation of the interceptor into two (2) sections. The
outlet pipe shall be the same size as the inlet pipe of the
sand interceptor, the minimum being three (3) inches
(80 mm.), and the baffle shall have two (2) openings
of the same diameter as the outlet pipe and at the
same invert as the outlet pipe. These openings shall
be staggered so that there cannot be a straight line
flow between any inlet pipe and the outlet pipe. The
invert of the inlet pipe shall be no lower than the
invert of the outlet pipe.
The sand interceptor shall have a minimum
dimension of two (2) feet square (0.2 m^) for the net
free opening of the inlet section and a minimum
depth imder the invert of the outlet pipe of two (2)
feet (610 mm).
For each five (5) gallons (18.9 L) per minute flow
or fraction thereof over twenty (20) gallons (75.7 L)
per minute, the area of the sand interceptor inlet
section is to be increased by one (1) square foot (0.09
m^). The outlet section shall at all times have a
minimum area of fifty (50) percent of the inlet section.
The outlet section shall be covered by a solid
removable cover, set flush with the finished floor,
and the inlet section shall have an open grating, set
flush with the finished floor and suitable for the
traffic in the area in which it is located.
1016.3 Separate Use. Sand and similar interceptors
for every solid shall be so designed and located as to
be readily accessible for cleaning, shall have a water
seal of not less than six (6) inches (152 mm), and shall
be vented.
1017.0 Oil and Flammable Liquid Interceptors.
1017.1 Interceptors Required. All repair garages
and gasoline stations with grease racks or grease
pits, and all factories that have oily, flammable, or
both types of wastes as a result of manufacturing,
storage, maintenance, repair, or testing processes,
shall be provided with an oil or flammable liquid
interceptor that shall be cormected to all necessary
floor drains. The separation or vapor compartment
shall be independently vented to the outer air. If two
(2) or more separation or vapor compartments are
used, each shall be vented to the outer air or may
connect to a header that is installed at a minimum of
six (6) inches (152 mm) above the spill line of the
lowest floor drain and vented independently to the
outer air. The minimtun size of a flammable vapor
156
TRAPS AND INTERCEPTORS 1017.1-1017.2
vent shall not be less than two (2) inches (50 mm),
and, when vented tlirough a sidewall, the vent shall
not be less than ten (10) feet (3048 mm) above the
adjacent level at an approved location. The
interceptor shall be vented on the sewer side and
shall not connect to a flammable vapor vent. All oil
and flammable interceptors shall be provided with
gastight cleanout covers that shall be readily
accessible. Tlie waste line shall not be less than tliree
(3) inches (80 mm) in diameter with a full-size
cleanout to grade. Wlien an interceptor is provided
with an overflow, it shall be provided with an
overflow line (not less than two (2) inches (50 mm) in
diameter) to an approved waste oil tank having a
mkiimum capacity of five hundred fifty (550) gallons
(2,080 L) and meeting the requirements of the
Authority Having Jurisdiction. The waste oil from
the separator shall flow by gravity or shall be
pumped to a higher elevation by an automatic
pump. Pumps shall be adequately sized and
accessible. Waste oil tanks shall have a two (2) inch
(50 mm) minimum pump-out connection at grade
and a one and one-half (1-1/2) inch (40 mm)
minimum vent to atmosphere at an approved
location at least ten (10) feet (3,048 mm) above grade.
1017,2 Design of Interceptors. Each manufactured
interceptor tliat is rated shall be stamped or labeled
by the manufacturer with an indication of its full
discliarge rate in gpm (L/s). Tlie full discharge rate to
such an interceptor shall be determined at fuH flow-
Each interceptor shall be rated equal to or greater
than flie incoming flow and shall be provided with an
overflow line to an tinderground tank.
Interceptors not rated by the manufacturer shall
have a depth of not less than two (2) feet (610 mm)
below the invert of the discharge drain. The outlet
openii-Tg shall have not less than an eighteen (18) inch
(457 mm) water seal and shall have a minimum
capacity as follows: where not more than three (3)
motor vehicles are serviced and/or stored,
interceptors shall have a minimum capacity of six (6)
cubic feet (0.2 m^), and one (1) cubic foot (0.03 m^) of
capacity shall be added for each vehicle up to ten
(10) veWcles. Above ten (10) vehicles, the Autliority
Having Jurisdiction shall determine the size of the
interceptor required. Where vehicles are serviced
only and not stored, interceptor capacity shall be
based on a net capacity of one (1) cubic foot (0.03 m')
for each one hundred (100) square feet (9.3 m^) of
surface to be drained into the interceptor, with a
minitntun of six (6) cubic feet (0.2 m').
157
2007 CALIFORNIA PLUMBING CODE
158
CHAPTER 11
STORM DRAINAGE
11 01.0 General.
1101.1 Where Required. All roofs, paved areas,
yards, courts, and courtyards shall be drained into a
separate storm sewer system, or into a combined
sewer system where a separate storm sewer system
is not available, or to some other place of disposal
satisfactory to the Authority Having Jurisdiction. In
the case of one- and two-family dwellings, storm
water may be discharged on flat areas such as streets
or lawns so long as the storm water shall flow away
from the building and away from adjoining
property, and shall not create a nuisance.
1101.2 Storm Water Drainage to Sanitary Sewer
Prollibited. Storm water shall not be drained into
sewers intended for sanitary drainage only.
1101.3 lUlaterial Uses. Rainwater piping placed
within the interior of a building or run witliin a vent
or shaft shall be of cast iron, galvanized steel,
wrought iron, brass, copper, lead. Schedule 40 ABS
DWV, Schedule 40 PVC DWV, stainless steel 304 or
316L (stainless steel 304 pipe and fittings shall not be
installed tindergroimd and shaU be kept at least six
inches (152 mm) aboveground), or other approved
materials, and changes in direction shall conform to
the requirements of Section 706.0. ABS and PVC
DWV piping installations shall be installed in
accordance with IS 5, IS 9, and Chapter 15 "Firestop
Protection." Except for individual single-family
dwelling units, materials exposed within ducts or
plenums shall have a flame-spread index of not more
than 25 and a smoke-developed iiidex of not more
than 50, when tested in accordance witli the Test for
Surface-Burning Characteristics of the Building
Materials (see the Building Code standards based on
ASTM E-84 and ANSI/UL 723.).
[HCD 1 & HCD 2] ABS or PVC installations are limited
to not more than two stories of areas of residential
accommodation.
1101.3.1 [For OSHPD 1,2, 3 & 4] ABS and PVC
installations are not allowed.
1101.4 Expansion Joints Required. Expansion
joints or sleeves shall be provided where warranted
by temperature variations or physical conditions.
11 01 .5 Subsoil Drains.
1 1 01 .5.1 Subsoil drains shall be provided around
' ' the perimeter of buildings having basements,
cellars, or crawl spaces or floors below grade.
Such subsoil drains may be positioned inside or
outside of the footing, shall be of perforated or
open-jointed approved dram tile or pipe not less
than three (3) inches (80 mm) in diameter, and
shall be laid in gravel, slag, crushed rock,
approved three-quarter (3/4) inch (19.1 mm)
crushed recycled glass aggregate, or other
approved porous material with a minimum of
four (4) inches (102 mm) surrounding the pipe
on all sides. Filter media shall be provided for
exterior subsoil piping.
Exception: [HCD 1 & HCD 2] Subsoil drains
are mandatory only when required by the
Authority Having Jurisdiction due to geological
conditions.
1101 .5.2 Subsoil drains shall be piped to a storm
drain, to an approved water course, to tlie front
street curb or gutter, or to an alley, or the
discharge from the subsoil drains shall be
conveyed to tlie alley by a concrete gutter. Wliere
a continuously flowing spring or groundwater is
encountered, subsoil drains shall be piped to a
storm drain or an approved water course.
1 1 01 .5.3 Wliere it is not possible to convey the
drainage by gravity, subsoil drains shall
discharge to an accessible sump provided with
an approved automatic electric pump. Tlie sump
shall be at least fifteen (15) inches (375 mm) in
diameter, eighteen (18) inches (457 mm) in
depth, and provided with a fitted cover. The
sump pump shall have an adequate capacity to
discharge all water coming into the sump as it
accumulates to the required discharge point, and
the capacity of the pump shall not be less tlian
fifteen (15) gpm (1.0 L/s). The discharge piping
from the sump pump shall be a minimum of one
and one-half (1-1/2) inches (40 nnm) in diameter
and have a union or other approved quick-
disconnect assembly to make the pump
accessible for servicing.
1101 .5.4 For separate dwellings not serving
continuously flowing springs or groundwater,
the sump discharge pipe may discharge onto a
concrete splash block with a minimum length of
twenty-four (24) inches (610 mm). This pipe shall
be witliin four (4) inches (102 mm) of the splash
block and positioned to direct the flow parallel
to the recessed line of the splash block.
1101.5.5 Subsoil drains subject to backflow
when discharging into a storm drain shall be
provided with a backwater valve in the drain
line so located as to be accessible for inspection
and maintenance.
169
1101.5-1101.11
2007 CALIFORNIA PLUMBING CODE
1101.5.6 Nothing in Section 1101.5 shall prevent
drains that serve either subsoil drains or areaways
of a detached building from discharging to a
properly graded open area, provided that:
(1) They do not serve continuously flowing
springs or groundwater;
(2) The point of discharge is at least ten (10) feet
(3,048mm.) from any property line; and
(3) It is impracticable to discharge such drains
to a storm drain, to an approved water
course, to the front street curb or gutter, or
to an alley.
1101.6 Building Subdrains. Building subdrains
located below the public sewer level shall discharge
into a sump or receiving tank, the contents of which
shall be automatically lifted and discharged into the
drainage system as required for building sumps.
1101.7 Areaway Drains. All open subsurface space
adjacent to a building, serving as an entrance to the
basement or cellar of a building, shall be provided
with a drain or drains. Such areaway drains shall be
two (2) inches (50 mm) minimum diameter for
areaways not exceeding one hundred (100) square
feet (9.3 m^) in area, and shall be discharged in the
manner provided for subsoil drains not serving
continuously flowing springs or groimdwater (see
Section 1101.5.2). Areaways in excess of one hundred
(100) square feet (9.3 m^) shall not drain into subsoil.
Areaway drains for areaways exceeding one
hundred (100) square feet (9.3 m^) shall be sized
according to Table 11-2.
1101.8 Window Areaway Drains. Window areaways
not exceeding ten (10) square feet (0.9 m^) in area
may discharge to the subsoil drains through a two
(2) inch (50 mm) pipe. However, window areaways
exceeding ten (10) square feet (0.9 m^) in area shall be
handled in the manner provided for entrance
areaways (see Section 1101.7).
1101.9 Filling Stations and IVIotor Veliicle Washing
Establisliments. Public filling stations and motor
vehicle washing establishments shall have the paved
area sloped toward sumps or gratings within the
property lines. Curbs not less than six (6) inches (152
mm) high shall be placed where required to direct
water to gratings or sumps.
1101.10 Paved Areas. Where the occupant creates
sturface water drainage, the sumps, gratings, or floor
drains shall be piped to a storm drain or an
approved water course.
1101.11 Roof Drainage.
1101.11.1 Primary Roof Drainage. Roof areas
of a building shall be drained by roof drains or
gutters. The location and sizing of drains and
gutters shall be coordinated with the structural
design and pitch of the roof. Unless otherwise
required by the Authority Having Jurisdiction,
roof drains, gutters, vertical conductors or
leaders, and horizontal storm drains for primary
drainage shall be sized based on a storm of sixty
(60) minutes duration and 100-year return
period. Refer to Table D-1 (in Appendix D) for
100-year, 60-minute storms at various locations.
1101.11.2 Secondary drainage. Secondary
(emergency) roof drainage shall be provided by
one of the methods specified in Section
1101.11.2.1 or 1101.11.2.2.
1101.11.2.1 Roof Scuppers or Open Side.
Secondary roof drainage shall be provided
by an open-sided roof or scuppers where the
roof perimeter construction extends above
the roof in such a manner that water will be
entrapped. An open-sided roof or scuppers
shall be sized to prevent the depth of
ponding water from exceeding that for
which the roof was designed as determined
by Section 1101.11.1. Scupper openings
shall be a minimum of 4" high and have a
width equal to the circumference of the roof
drain reqxaired for the area served, sized by
Table 11-1.
1101.11.2.2 Secondary Roof Drain.
Secondary roof drains shall be provided.
The secondary roof drains shall be located a
minitnum of 2 inches above the roof surface.
The maximum height of the roof drains shall
be a height to prevent the depth of ponding
water from exceeding that for which the
roof was designed as determined by Section
1101.11.1. The secondary roof drains shall
cormect to a piping system conforming to
Section 1101.11.2.2.1 or 1101.11.2.2.2.
1101.11.2.2.1 Separate Piping System.
The secondary roof drainage system
shall be a separate system of piping,
independent of the primary roof
drainage system. The discharge shall be
above grade, in a location observable by
the building occupants or maintenance
personnel. Secondary roof drain
systems shall be sized in accordance
with Section 1101.11.1 based on the
rainfall rate for which the primary
system is sized.
1101.11.2.2.2 Combined System. The
secondary roof drains shall connect to
the vertical piping of the primary storm
drainage conductor downstream of any
horizontal offset below the roof. The
160
STORM DRAINAGE
1101.11 -1104.1
primary storm drainage system shall
connect to the building storm water that
connects to an underground public
storm sewer. The combined secondary
and primary roof drain systems shall be
sized in accordance with Section 1106.0
based on double tlTe rainfall rate for the
local area.
1101.12 Cleanouts.
1101.12.1 Cleanouts for building storm
drains shall comply with the requirements
of Section 719.0 of this code.
1101.12.2 Rain leaders and conductors
connected to a building storm sewer shall
have a cleanout iiistalled at the base of the
outside leader or outside conductor before it
connects to the horizontal drain.
1101.13 All rainwater sumps serving "public
use" occupancy buildings shall be provided with
dual ptmips arranged to function alternately in
case of overload or mechanical failure.
1102.0 Materials.
1102.1 Conductors.
1102.1.1 Conductors installed aboveground in
buildings shall be constructed of materials
specified in Table 14-1.
11 02.1 .2 Tlie inside of conductors installed above
groxmd level shall be of seamless copper water
tube, Type K, L, or M; Schedule 40 copper pipe or
Scliedule 40 copper alloy pipe; Tjqpe DWV copper
drainage tube; service weight cast-iron pipe or
hubless cast-iron soil pipe; standard weight
galvanized steel pipe; stainless steel 304 or 316L
(stainless steel 304 pipe and fittings shaU not be
installed undergrotmd and shall be kept at least 6
mches (152 mm) aboveground); or Schedule 40
ABS or Scliedule 40 PVC plastic pipe.
[HCD 1 & HCD 2] ABS or PVC installations are
limited to not more than two stories of areas of
residential accommodation.
1102.1.2 [OSHPD 1, 2, 3 & 4] ABS and PVC
installations are not allowed.
1102.2 Leaders.
1102.2.1 Leaders shall be constructed of
materials specified in Table 14-1.
1102.2.2 Leaders shall be of seamless copper
water tube, Tj^e K, L, or M; Schedule 40 copper
pipe; Scliedule 40 copper alloy pipe; t5^e DWV
copper drainage tube; service weight cast-iron
soil pipe or hubless cast-iron soil pipe; aluminum
sheet metal, galvanized steel sheet metal, or
copper sheet metal; standard weight galvanized
steel pipe; Class DL or XL lead pipe; stainless
steel 304 or 316L (stainless steel 304 pipe and
fittings shall not be installed underground and
shall be kept at least 6 mches (152 mm) above-
ground); or Schedule 40 ABS or Schedule 40
PVC plastic pipe.
1102.3 Underground Building Storm Drains. All
underground building storm drains shall be
constructed of materials specified in Table 14-1.
1102.4 Building Storm Sewers. Building storm
sewers shall be constructed of materials specified m
Table 14-1.
1102.5 Subsoil Drains.
1102.5.1 Subsoil drains shall be constructed of
materials specified in Table 14-1.
1 1 02.5.2 Subsoil drains shall be open-jointed or
of perforated pipe, vitrified clay, plastic, cast
iron, or porous concrete.
1103.0 Traps on Storm Drains and Leaders.
1103.1 Where Required. Leaders and storm drams,
when connected to a combined sewer, shall be
trapped. Floor and area drains connected to a storm
drain shall be trapped.
Exception: Traps shall not be required where
roof drams, rain leaders, and other inlets are at
locations allowed under Section 906.0, Vent
Termination.
1103.2 Where Not Required. No trap shall be
required for leaders or conductors that are connected
to a sewer carrying storm water exclusively.
1103.3 Trap Size. Traps, when installed for
individual Conductors, shall be the same size as the
horizontal drain to wliicli they are connected.
1103.4 Method of Installation of Combined Sewer.
Individual storm-water traps shall be installed on the
storm-water drain branch serving each storm-water
inlet, or a suigle trap shall be installed in the mam
storm drain just before its connection with the
combined building sewer. Such traps shall be
provided with an accessible cleanout on the outlet
side of the trap.
1104.0 Leaders, Conductors, and Connections.
1104.1 Improper Use. Leaders or conductors shall
not be used as soil, waste, or vent pipes nor shall
161
1104.1 -1108.1
2007 CALIFORNIA PLUMBING CODE
soil, waste, or vent pipes be used as leaders or
conductors.
1104.2 Protection of Leaders. Leaders installed
along aUe5rways, driveways, or other locations where
they may be exposed to damage shall be protected
by metar guards, recessed into the wall, or
constructed from ferrous pipe.
1104.3 Combining Storm with Sanitary Drainage.
The sanitary and storm drainage system of a
building shall be entirely separate, except where a
combined sewer is used, in which case the building
storm drain shall be connected in the same
horizontal plane through single wye fittings to the
combined building sewer at least ten (10) feet (3,048
mm) downstream from any soil stack.
1105.0 Roof Drains.
1105.1 IVIaterial.
1105.1.1 Roof drains shall be constructed of
materials specified in Table 14-1.
1 1 05.1 .2 Roof drains shall be of cast iron, copper
or copper alloy, lead, or plastic.
1105.2 Dome or Strainer for General Use. All roof
drains and overflow drains, except those draining to
hanging gutters, shall be equipped with strainers
extending not less than four (4) inches (102 mm)
above the stirface of the roof immediately adjacent to
the drain. Strainers shall have a minimum inlet area
above the roof level of not less than one and One-half
(1-1/2) times the area of the conductor or leader to
which the drain is connected.
1105.3 Strainers for Flat Decl(S. Roof drain strainers
for use on sun decks, parking decks, and similar areas
that are normally serviced and maintained may be of
the flat surface t5^e. Such roof drain strainers shall be
level with the deck and shall have an available inlet
area of no less than two (2) times the area of the
conductor or leader to which the drain is connected.
1105.4 Roof Drain Flashings. Coimection between
the roof and roof drains that pass through the roof
and into the interior of the building shall be made
watertight by the use of proper flashing material.
1 1 05.4.1 Where lead flashing material is used, it
shall be a minimum of four (4) pounds per
square foot (19.5 kg/m^).
1105.4.2 Where copper flashing material is
used, it shall be a minimum of twelve (12)
oimces per square foot (3.7 kg/m^).
1106.0 Size of Leaders, Conductors, and Storm
Drains.
1106.1 Vertical Conductors and Leaders. Vertical
conductors and leaders shall be sized on the basis of
the maximum projected roof area and Table 11-1.
1106.2 Size of Horizontal Storm Drains and
Sewers. The size of building storm drains or building
storm sewers or any of their horizontal branches shall
be based upon the maximxim projected roof or paved
area to be handled and Table 11-2.
1106.3 Size of Roof Gutters. The size of semi-
circular gutters shall be based on the maximum
projected roof area and Table 11-3.
1106.4 Side Walls Draining onto a Roof. Where
vertical walls project above a roof so as to permit
storm water to drain to the roof area below, the
adjacent roof area may be computed from Table 11-1
as follows:
(1) For one (1) wall - add fifty (50) percent of
the wall area to the roof area figures.
(2) For two (2) adjacent walls - add thirty-five
(35) percent of the total wall areas.
(3) Two (2) opposite walls of same height - add
no additional area.
(4) Two (2) opposite walls of differing heights-
add fifty (50) percent of the wall area above
the top of lower wall.
(5) Walls on three (3) sides - add fifty (50)
percent of the area of the inner wall below
the top of the lowest wall, plus allowance
for the area of the wall above the top of the
lowest wall, per (2) and (4) above.
(6) Walls on four (4) sides - no allowance for
wall areas below the top of the lowest wall -
add for areas above the top of the lowest
wall per (1), (2), (4), and (5) above.
1107.0 Values for Continuous Flow.
Where there is a continuous or semi-continuous
discharge into the building storm drain or building
storm sewer, as from a pump, ejector, air-
conditioning plant, or similar device, one (1) gpm
(3.8 L/min.) of such discharge shall be computed as
being equivalent to twenty-four (24) square feet (2.2
m^) of roof area, based upon a rate of ramfall of four
(4) inches (102 mm) per hour.
1108.0 Controlled-Flow Roof Drainage.
1108.1 Application. In lieu of sizing the storm
drainage system in accordance with Section 1106.0,
the roof drainage may be sized on the basis of
controlled flow and storage of the storm water on the
roof, provided the following conditions are met:
(1) The water from a 25-year-frequency storm
shall not be stored on the roof for more than
twenty-foxor (24) hours.
(2) During the storm, the water depth on the
roof shall not exceed the depths specified in
Table 11-4.
162
STORM DRAINAGE
Table 11-4- 1109.2
TABLE 11-4
Controlled-Flow Maximum Roof Water Depth
TABLE 11-5
Distance of Scupper Bottoms Above Roof
Roof Rise,*
Inches (mm)
IWax Water Depth at Drain,
Inches (mm)
Flat (Flat)
2 (51)
4 (102)
6 (152)
3
4
5
6
(76)
(102)
(127)
(152)
'Vertical measurement from tlie roof surface at tlie drain to ihe liigl^est
point of the roof surface served by the drain, ignoring any local
depression immediately adjacent to flie drain.
(3) No less than two (2) draiiis shall be installed
in roof areas of ten tliousand (10,000) square
feet (929.0 m^) or less, and no less than one
(1) additional drain shall be installed for
each ten tiaousand (10,000) square feet (929.0
m^) of roof area over ten tliousand (10,000)
square feet (929.0 m").
(4) Each roof drairi shall have a precalibrated,
fixed (nonadjustable), and proportional
weir (notched) in a standing water
collar inside the strainer. No mechanical
devices or valves shall be allowed.
(5) Pipe sizing shall be based on the pre-
calibrated rate of flow (gpm) of the pre-
calibrated weir for the maximum allowable
water depth, and Tables 11-1 and 11-2.
(6) The height of stones or other granular
material above the waterproofed surface
shall not be considered in water depth
measurement, and the roof surface in the
vicinity of the drain shall not be recessed to
create a reservoir.
(7) Roof design, where controlled-flow roof
drainage is used, shall be such that the
minimum design roof Hve load is tliirty (30)
pounds per square foot (146.5kg/m^) to
provide a safety factor above tlie fifteen (15)
pounds per square foot (73.2kg/m^)
represented by the depth of water stored on
tlie roof as indicated in Table 11-4.
(8) Scuppers shall be provided in parapet walls.
The distance of scupper bottoms above the
roof level at tlie drains shall not exceed die
maximum distances specified in Table 11-5.
Maximum Distance of
Scupper Bottom
Roof Rise,*
Above Roof Level at Drains,
inches (mm)
Inches
(mm)
Flat (Flat)
3
(76.2)
2 (51)
4
(102.0)
4 (102)
5
(127.0)
6 (152)
6
(152.0)
'Vertical measurement from Hie roof surface at tlie drain to the highest
point of the roof surface served by the drain, ignoring any local
depression immediately adjacent to tlie drain.
(9) Scupper openings shall be a minimum of 4
inches high and have a width equal to the
circumference of the roof drain required for
the area served, sized by Table 11-1.
(10) Flashings shall extend above the top of the
scuppers.
(11) At any wall or parapet, forty-five (45)
degree (0.79 rad) cants shall be installed.
(12) Separate storm and sanitary drainage
systems shall be provided within the
building.
(13) Calculations for the roof drainage system
shall be submitted along with the plans to
the Authority Having Jurisdiction for
approval.
1108.2 Setback Roofs. Drains on setback roofs may
be cormected to the controlled-flow drainage systems
provided:
(1) Tlie setback is designed for storing water, or
(2) The square footage of the setback drainage
area is converted as outlined in Section
1108.0 to gpm, and the storm-water pipe
sizes in the controlled-flow system are
based on the sum of the loads.
(3) Tlie branch from each of the roof drains that
are not provided with controlled flow shall
be sized in accordance with Table 11-1.
1109.0 Testing.
1109.1 Testing Required. New building storm
drainage systems and parts of existing systems that
have been altered, extended, or repaired shall be
tested as described in Section 1109.2.1 to disclose
leaks and defects.
1109.2 Methods of Testing Storm Drainage
Systems. Except for outside leaders ai\d perforated
163
1109.2
2007 CALIFORNIA PLUMBING CODE
or open-jointed drain tile, the piping of storm drain
systems shall be tested upon completion of the rough
piping installation by water or air, and proved tight.
The Authority Having Jurisdiction may require the
removal of any cleanout plugs to ascertain whether
the pressure has reached all parts of the system.
Either of the following test methods shall be used:
1109.2.1 Water Test. After piping has been
installed, the water test shall be applied to the
drainage system, either to the entire system or to
sections. If the test is applied to the entire system,
aU openings in the piping shall be tightly closed
except for the highest operiing, and the system
shall be filled with water to the point of
overflow. If the system is tested in sectioris, each
opening shall be tightly plugged except for the
highest opening of the section under test, and
each section shall be filled with water, but no
section shall be tested with less than a ten (10)
foot (3,048 mm) head of water. In testing
successive sections, at least the upper ten (10) feet
(3,048 mm) of the next preceding section shall be
tested so that no joint of pipe in the building
(except the uppermost ten (10) foot (3,048 mm) of
a roof drainage system, which shall be filled with
water to the flood level of the uppermost roof
drain) shall have been submitted to a test of less
than a ten (10) foot (3048 mm) head of water. The
water shall be kept in the system or in the
portion vmder test for at least fifteen (15) minutes
before inspection starts; the system shall then be
tight at all points.
1109.2.2 Air Test. The air test shall be made by
attaching an air compressor testing apparatus to
any suitable opening after closing aU other inlets
and outlets to the system, forcing air into the
system until there is a uniform gauge pressure of
five (5) psi (34.5 kPa) or sufficient pressure to
balance a column of mercury ten (10) inches (254
mm) in height. This pressure shall be held without
introduction of additional air for a period of at
least fifteen (15) minutes. Schedtde 40 plastic DWV
systems shall not be tested by the air test method.
1109.2.3 Exceptions. When circumstances
exist that make air and water tests described in
Sections 1109.2.1 and 1109.2.2 above impractical,
see Section 103.5.3.3.
164
STORM DRAINAGE
Table 11-1
TABLE 11-1
Sizing Roof Drains, Leaders, and Verticai Rainwater Piping^'^
Size of Drain,
IVIaximum Allowable Horizontal Projected Roof Areas
Leader, or Pipe,
Flow,
Square Feet at Various Rainfall Rates
Indies
gpm
1 inyh
2in7h
3in7h
4inyh
5inyh
einVh
2
23
2,176
1,088
725
544
435
363
3
67
6440
3,220
2,147
1,610
1,288
1,073
4
144
13,840
6,920
4,613
3,460
2,768
2,307
5
261
25,120
12,560
8,373
6,280
5,024
4,187
6
424
40,800
20,400
13,600
10,200
8,160
6,800
8
913
88,000
44,000
29,333
22,000
17,600
14,667
TABLE 11-1 (Metric)
Sizing Roof Drains, Leaders, and Vertical Rainwater Piping"'
Size of Drain
Leader or Pipe, Flow,
mm 17s
Maximum Allowable Horizontal Projected Roof Areas
Square Meters at Various Rainfall Rates
25 mm/h 50 mm/h 75 mrn/h 100mm/h 125 mm/h 150 mm/h
50
1.5
202
101
67
51
40
34
80
4.2
600
300
200
150
120
100
100
9.1
1,286
643
429
321 ■
257
214
125
16.5
2,334
1,117
778
583
467
389
150
26.8
3,790
1,895
1,263
948
758
632
200
57.6
8,175
4,088
2,725
2,044
1,635
1,363
Notes:
1 . The sizing data for vertical conductors, leaders, and drains are based on the pipes flowing 7/24 full.
2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the
1 inch/hour (25 mm/hour) column by the desired rainfall rate.
3. Vertical piping may be round, square, or rectangular. Square pipe shall be sized to enclose its equivalent
round pipe. Rectangular pipe shall have at least the same cross-sectional area as its equivalent round pipe,
except that the ratio of its side dimensions shall not exceed 3 to 1 .
165
Table 11 -2
2007 CALIFORNIA PLUMBING CODE
TABLE 11-2
Sizing of l-lorizontal Rainwater Piping'"
Size of
Fiow at Maxinium Allowable Horizontal Projected Roof Areas
Pipe,
1/8 inyft. Slope, Square
Feet at Various Rainfall Rates
Inches
gpm
1 inyh 2 in^h
3 InJh
4in7h
SinVh
einVh
3
34 3,288 1,644
1,096
822
657
548
4
78 7,520 3,760
2,506
1,880
1,504
1,253
5
139 13,360 6,680
4,453
3,340
2,672
2,227
6
222 21,400 10,700
7,133
5,350
4,280
3,566
8
478 46,000 23,000
15,330
11,500
9,200
7,670
10
860 82,800 41,400
27,600
20,700
16,580
13,800
12
1,384 133,200 66,600
44,400
33,300
26,650
22,200
15
2,473 238,000 119,000
79,333
59,500
47,600
39,650
Size of Flow at
Pipe, 1/4 Inyft. Slope,
Inches gpm
Maximum Allowable Horizontal Projected Roof Areas
Square Feet at Various Rainfall Rates
1 in^h
2in7h
SinTh
4in7h
5 in^
6inyh
3
48
4,640
2,320
1,546
1,160
928
773
4
110
10,600
5,300
3,533
2,650
2,120
1,766
5
196
18,880
9,440
6,293
4,720
3,776
3,146
6
314
30,200
15,100
10,066
7,550
6,040
5,033
8
677
65,200
32,600
21,733
16,300
13,040
10,866
10
1,214
116,800
58,400
38,950
29,200
23,350
19,450
12
1,953
188,000
94,000
62,600
47,000
37,600
31 ,350
15
3,491
336,000
168,000
112,000
84,000
67,250
56,000
Size of
Flow at
Maximum Allowable Horizontal Projected Roof Areas
Pipe,
1/2 inyft. Slope,
Square Feet at Various Rainfall Rates
Inches
gpm
1 inJh
2inyh
3 inyji
4inyh
5inyh
einJh
3
68
6,576
3288
2,192
1,644
1,310
1096
4
156
15,040
7,520
5,010
3,760
3,010
2500
5
278
26,720
13,360
8,900
6,680
5,320
4450
6
445
42,800
21,400
14,267
10,700
8,580
7140
8
956
92,000
46,000
30,650
23,000
18,400
15,320
10
1,721
165,600
82,800
55,200
41 ,400
33,150
27,600
12
2,768
266,400
133,200
88,800
66,600
53,200
44,400
15
4,946
476,000
238,000
158,700
119,000
95,200
79,300
Notes:
1 . The sizing data for horizontal piping are based on the pipes flowing full.
2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the
1 inch/hour (25 mm/hour) column by the desired rainfall rate.
166
STORM DRAINAGE
Table 11-2 (Metric)
TABLE 11-2 (Metric)
Sizing of IHorizontai Rainwater Piping^ '
Size of
Flow at
IVIaximum Allowable Horizontal Projected Roof Areas
Pipe,
10 mm/m Slope,
>
Square 1
Meters at Various Rainfall Rates
mm
Us
25 mm/li
50 mm/li
75 mm/li
lOOmm/h
125 mm/li
150mm/h
80
2.1
305
153
102
76
61
51
100
4.9
700
350
233
175
140
116
125
8.8
1,241
621
414
310
248
207
150
14.0
1,988
994
663
497
398
331
200
30.2
4,273
2,137
1,424
1,068
855
713
250
54.3
7,692
3,846
2,564
1,923
1,540
1,282
300
87.3
12,375
6,187
4,125
3,094
2,476
2,062
375
156.0
22,110
11,055
7,370
5,528
4,422
3,683
Size of Flow at
Pipe, 20 mm/m Slope,
mm Us
Maximum Allowable Horizontal Projected Roof Areas
Square Meters at Various Rainfall Rates
25mni/h
50mm/ii
75 mm/h
100 mm/h
125 mm/h
150 mm/h
80
3.0
431 ,
216
144
108
86
72
100
6.9
985
492
328
246
197
164
125
12.4
1,754
877
585
438
351
292
150
19.8
2,806
1,403
935
701
561
468
200
42.7
6,057
3,029
2,019
1,514
1,211
1009
250
76.6
10,851
5,425
3,618
2,713
2,169
1807
300
123.2
17,465
8,733
5,816
4,366
3,493
2912
375
220,2
31,214
15,607
10,405
7,804
6,248
5202
Size of
Flow at
Maximum Allowable Horizontal Projected Roof Areas
Pipe,
40 mm/m Slope,
Square Meters at Various Rainfall Rates
mm
L/s
25mni/h
50 mm/li
75 mm/li
100 mm/h
125 mm/h
150 mm/h
80
4.3
611
305
204
153
122
102
100
9.8 :
1,400
700
465
350
280
232
125
17.5
2,482
1,241
827
621
494
413
150
28.1
3,976
1,988
1,325
994
797
663
200
60.3
8,547
4,273
2,847
2,137
1,709
1,423
250
108.6
15,390
7,695
5,128
3,846
3,080
2,564
300
174.6
24,749
12,374
8,250
6,187
4,942
4,125
375
312.0
44,220
22,110
14,753
11,055
8,853
7,367
Notes:
1 . The sizing data for horizontal piping are based on the pipes flowing full.
2. For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the
1 inch/hour (25 mm/hour) column by the desired rainfall rate.
167
Table 11-3
2007 CALIFORNIA PLUMBING CODE
TABLE 11-3
Size of Gutters
Diameter of Gutter
in Indies
Maximum Rainfall in
Inches per Hour
1/16 inyft. Slope
2
3
4
5
6
3
340
226
170
136
113
4
720
480
360
288
240
5
1,250
834
625
500
416
6
1,920
1,280
960
768
640
7
2,760
1,840
1,380
1,100
918
8
3,980
2,655
1,990
1,590
1,325
10
7,200
4,800
3,600
2,880
2,400
Diameter of Gutter
in Inches
Maximum Rainfall in Inches per Hour
1/8 in^. Slope
2
3
4
5
6
3
480
320
240
192
160
4
1,020
681
510
408
340
5
1,760
1,172
880
704
587
6
2,720
1,815
1,360
1,085
905
7
3,900
2,600
1,950
1,560
1,300
8
5,600
3,740
2,800
2,240
1,870
10
10,200
6,800
5,100
4,080
3,400
Diameter of Gutter
in Inches
Maximum Rainfall in
Inches per Hour
1/4 inift. Slope
2
3
4
5
6
3
680
454
340
272
226
4
1,440
960
720
576
480
5
2,500
1,668
1,250
1,000
834
6
3,840
2,560
1 ,920
1,536
1,280
7
5,520
3,680
2,760
2,205
1,840
8
7,960
5,310
3,980
3,180
2,655
10
14,400
9,600
7,200
5,750
4,800
Diameter of Gutter
in Inches
Maximum Rainfall in
Inches per Hour
1/2 inyft. Slope
2
3
4
5
6
3
960
640
480
384
320
4
2,040
1,360
1,020
816
680
5
3,540
2,360
1,770
1,415
1,180
6
5,540
3,695
2,770
2,??0
1,850
7
7,800
5„200
3,900
3,120
2,600
8
11,200
7,460
5,600
4,480
3,730
10
20,000
13,330
10,000
8,000
6,660
168
STORM DRAINAGE
Table 11-3 (Metric)
^
TABLE 11-3 (Metric)
Size of Gutters
Diameter of
Gutter in mm
Maximum Rainfall in Millimeters per Hour
5.2 mm/m Slope
50.8
76.2
101.6
127.0
152.4
80
31.6
21.0
15.8
12.6
10.5
100
66.9
44.6
33,4
26.8
22.3
125
116.1
77.5
58.1
46.5
38.7
150
178.4
119.1
89.2
71.4
59.5
175
256.4
170.9
128.2
102.2
85.3
200
369.7
246.7
184,9
147.7
123.1
250
668.9
445.9
334.4
267.6
223.0
Diameter of
Gutter in mm
Maximum Rainfall in Millimeters per Hour
10.4 mm/m Slope
50.8
76.2
101.6
127.0
152.4
80
44.6
29.7
22.3
17.8
14.9
100
94.8
63.3
47.4
37.9
31.6
25
163.5
108.9
81.8
65,4
54,5
150
252.7
168.6
126.3
100.8
84.1
175
362.3
241.5
181.2
144.9
120.8
200
520.2
347.5
260.1
208.1
173,7
250
947.6
631.7
473.8
379
315.9
Diameter of
Gutter in mm
Maximum Rainfall in Millimeters per Hour
20.9 mm/m Slope
50.8
76.2
101.6
127.0
152.4
80
63.2
42.2
31.6
25.3
21.0
100
133.8
89.2
66.9
53.5
44,6
125
232.3
155.0
116.1
92.9
77.5
150
356.7
237.8
178,4
142.7
118.9
175
512.8
341.9
256.4
204.9
170.9
200
739.5
493.3
369.7
295.4
246.7
250
133.8
891.8
668.9
534.2
445.9
Diameter of
Gutter in mm
Maximum Rainfall in Millimeters per Hour
41 .7 mm/m Slope
50.8
76.2
101.6
127.0
152.4
80
89.2
59.5
44.6
35.7
29.7
100
189.5
126.3
94.8
75.8
63.2
125
328.9
219.2
164.4
131.5
109.6
150
514.7
343.3
257.3
206.2
171.9
175
724.6
483.1
362.3
289,9
241.4
200
1,40.5
693.0
520.2
416.2
346.5
250
1,858.0
1,238.4
929.0
743.2
618.7
169
2007 CALIFORNIA PLUMBING CODE
170
CHAPTER 12
FUEL PIPING
1201.0 Scope of Gas Piping.
(A) Coverage of piping systems shall extend
from the point of delivery to the connections
with each gas utilization device. For other
than undiluted liquefied petroleum gas
systems, the point of delivery shall be
considered the outlet of the service meter
assembly, or the outlet of the service
regulator or service shutoff valve where no
iTieter is provided. For undiluted liquefied
petroleum gas systems, the point of delivery
shall be considered the outlet of the final
pressure regulator, exclusive of the line gas
regulators, in tlie system. [NFPA 54: 1.1.1.1(A)]
(B) Piping systems requirements shall include
design, materials, components, fabrications,
assembly, installation, testing inspection,
operation, andmaintaiance. [NFPA 54: 1.1.1.1(C)]
(C) This code shall not apply to the following
(reference standards for some of which
appear in Appendix L [NFPA 54:1.1.1.2]):
(1) Portable LP-Gas equipment of all
types that is not connected to a
fixed fuel piping system,
(2) histallation of farm equipment such
as brooders, dehydrators, dryers,
and irrigation equipment.
(3) Raw material (feedstock) applications,
except for piping to special
atmosphere generators.
(4) Oxygen-fuel gas cutting arid
welduig systems.
(5) Industrial gas applications using
gases sudi as acetylene and acetylenic
compounds, hydrogen, ammonia,
caibon monoxide, oxygen, aiid nitrogen
(6) Petroleum refineries, pipeline
compressor or pumping stations,
loading terminals, compounding
plants, refinery tank farms, aiid
natural gas processing plants.
(7) Large integrated chemical plaiits or
portions of such plants where
flammable or coinbustible liquids
or gases are produced by chemical
reactions or used in chemical
reactions.
(8) LP-Gas installations at utility gas
plants.
(9) Liquefied natural gas (LNG)
installations.
(10) Fuel gas piping in power and
atomic energy plants.
(11) Proprietary items of equipment,
apparatus, or instruments such as
gas-generating sets, compressors,
and calorimeters.
(12) LP-Gas equipment for vaporization,
gas mixing, and gas manufacturiiig.
(13) LP-Gas piping for buildings under
construction or renovations that are
not to become part of the
permaiTent building piping system—
that is, temporary fixed piping for
building heat.
(14) Installation of LP-Gas systems for
railroad switch heating.
(15)Installation of LP-Gas and
compressed natural gas systems on
veliicles.
(16) Gas piping, meters, gas-pressure
regulators, and otlier appurtenances
used by the serving gas supplier u'l
distribution of gas, other than
undiluted LP-Gas.
1202.0 General.
The regulations of this chapter shall govern the
installation of all fuel gas piping in or in comiection
with any building or structure or within the property
lilies of any premises up to 5 psi, other than service
pipe. Fuel oil piping systems shall be installed in
accordance with NFPA 31.
Exception: Gas piping, meters, gas-pressure
regulators, and other appurtenances used by the
serviiig gas suppHer in distribution of gas, other
than undiluted LP-Gas [NFPA 54: 1.1.1.2(16)]
1203.0 Definitions.
For the purposes of tliis code, these definitions shall
apply to this chapter. Certain terms, plu'ases, words,
and their derivatives shall be mterpreted as set forth
in tills section, provided, however, that whenever the
words "gas meters" appear, they shall be construed
to also mean valves and those devices required for
the regulation of pressure and the ffieasurement of
natural gas being dispensed for any building,
structure, or premises.
1203.1 Appliance Fuel Connector - An assembly
of listed semi-rigid or flexible tubing and fittings to
171
1203.1 -1205.3
2007 CALIFORNIA PLUMBING CODE
carry fuel between a fuel-piping outlet and a fuel-
burning appliance.
1203.2 Fuel Gas - Natural, manufactured, liquefied
petroleum, or a mixture of these.
1203.3 Gas Piping - Any installation of pipe,
valves, or fittings that is used to convey fuel gas,
installed on any premises or in any building, but
shall not include:
(1) Any portion of the service piping.
(2) Any approved piping connection six (6) feet
(1,829 mm) or less in length between an
existing gas outlet and a gas appliance
in the same room with the outlet.
1203.4 Gas-Piping System - Any arrangement of
gas piping supplied by one (1) meter, and each
arrangement of gas piping serving a bviilding,
structure, or premises, whether individually metered
or not.
1203.5 Liquefied Petroleum Gas (LPG) Facilities -
Liquefied petroleum gas (LPG) facilities means
tanks, containers, container valves, regulating
equipment, meters, and /or appurtenances for the
storage and supply of liquefied petroleum gas for
any building, structure, or premises.
1203.6 Provision for Location of Point of Delivery -
The location of the point of delivery shall be
acceptable to the serving gas supplier. [NFPA 54:5.2]
1203.7 Quick-Disconnect Device - A hand-
operated device that provides a means for connecting
and disconnecting an appliance or an appliance
connector to a gas supply and that is equipped with
an automatic means to shut off the gas supply when
the device is disconnected.
1203.8 Service Piping - The piping and equipment
between the street gas main and the gas piping
system inlet that is installed by, and is under the
control and maintenance of, the serving gas supplier.
1203.9 Transition Gas Riser - Any listed or
approved section or sections of pipe and fittings
used to convey fuel gas and installed in a gas piping
system for the purpose of providing a transition
from belowground to aboveground.
1203.10 [For DSA-SS] Earthquake-actuated Gas
Shutoff Valve. A valve for installation in a gas piping
system and designed to automatically shut off the gas at the
location of the valve in the event of a seismic disturbance.
1204.0 Inspection.
1204.1 Upon completion of the installation, altera-
tion, or repair of any gas piping, and prior to the use
thereof, the Authority Having Jurisdiction shall be
notified that such gas piping is ready for inspection.
1204.2 All excavations required for the installation
of imderground piping shall be kept open until such
time as the piping has been inspected and approved.
If any such piping is covered or concealed before
such approval, it shall be exposed upon the direction
of the Authority Having Jurisdiction.
1204.3 The Authority Having Jurisdiction shall make
the following inspections and either shall approve
that portion of the work as completed or shall notify
the permit holder wherein the same fails to comply
with this code.
1204.3.1 Rougli Piping Inspection.
This inspection shall be made after all gas piping
authorized by the permit has been installed and
before any such piping has been covered or
concealed or any fixture or appliance has been
attached thereto. This inspection shall include a
determination that the gas-piping size, material,
and installation meet the requirements of this code.
1204.3.2 Final Piping Inspection.
This inspection shall be made after all piping
authorized by the permit has been installed and
after all portions thereof that are to be covered or
concealed are so concealed and before any
fixtures, appliance, or shutoff valve has been
attached thereto. This inspection shall be in
accordance with Section 1214.1. Test gauges
used in conducting tests shall comply with
Section 319.0, Test Gauges.
1204.4 In cases where the work authorized by the
permit consists of a minor installation of additional
piping to piping already connected to a gas meter,
the foregoing inspections may be waived at the
discretion of the Authority Having Jurisdiction. In
this event, the Authority Having Jurisdiction shall
make such inspection as deemed advisable in order
to be assured that the work has been performed in
accordance with the intent of this code.
1205.0 Certificate of Inspection.
1205.1 If, upon final piping inspection, the
installation is found to comply with the provisions of
this code, a certificate of inspection may be issued by
the Authority Having Jurisdiction.
1 205.2 A copy of the certificate of such final piping
inspection shall be issued to the serving gas supplier
supplying gas to the premises.
1205.3 It shall be unlawful for any serving gas
supplier, or person furnishing gas, to turn on or
cause to be turned on, any fuel gas or any gas meter
or meters, tintil such certificate of final inspection, as
herein provided, has been issued.
172
FUEL PIPING
1206.0-1209.4
1206.0 Authority to Render Gas Service.
1206.1 It shall be tinlawful for any person, firm, or
corporation, excepting an authorized agent or
employee of a person, firm, or corporation engaged
in the business of furnishing or supplying gas and
whose service pipes supply or connect with the
particular premises, to turn on or reconnect gas
service ut or on any premises where and when gas
service is, at the time, not being rendered.
1 206.2 It shall be unlawful to turn on or connect gas
in or on any premises unless aU outlets are properly
and securely coraiected to gas appliances or capped
or plugged with screw joint fittings.
1 207.0 Authiority to Disconnect.
1207.1 The Authority Having Jurisdiction or the
serving gas supplier is hereby authorized to
disconnect any gas piping or appliance or both that
shall be found not to conform to the requirements of
fliis code or tliat may be found defective and in such
condition as to endanger life or property.
1 207.2 Where such disconnection has been made, a
notice shall be attached to such gas piping or
appliance or botlT tliat shall state the same has been
disconnected, togetlier witli tlie reasons tlTereof.
1207.3 It shall be unlawful to remove or disconnect
any gas piping or gas appUance without capping or
plugging with a screw joint fittmg the outlet from
which said pipe or appliance was removed. All
outlets to which gas appliances are not connected
shall be left capped gastight on any piping system
fliat has been installed, altered, or repaired.
Exception: When an approved listed quick-
discoraiect device is used.
1 208.0 Temporary Use of Gas.
Where temporary use of gas is desired and the
Authority Having Jurisdiction deems the use
necessary, a permit may be issued for such use for a
period of time not to exceed that designated by the
Authority Having Jurisdiction, provided that such
gas-piping system otherwise conforms to the
requirements of tliis code regarding material, sizing,
ai\d safety.
1209.0 Gas-Piping System Design, IVIaterials, and
Components.
1209.1 Piping Plan.
1209.1.1 Instailatlon of Piping System. Wliere
required by the Authority Having Jurisdiction, a
piping sketch or plaii shall be prepared before
proceeding with tiie installation. TlTis plan shall
show the proposed location of piping, the size of
different braiiches, the various load demands,
and tlie location of the pomt of delivery.
1209.1.2 Addition to Existing System. Wlien
additional gas utilization equipment is being
connected to a gas-piping system, the existing
piping shall be checked to determine whether it
has adequate capacity (see Section 1209.4.3). If
inadequate, the existing system shall be enlarged
as required, or separate gas piping of adequate
capacity shall be provided.
1209.2 Provision for Location of Point of Delivery.
The location of the point of delivery shall be
acceptable to the serving gas supplier.
1209.3 Interconnections Between Gas-Piping
Systems.
1209.3.1 Interconnections Supplying Separate
Users. Where two or more meters, or two or
more service regulators where meters are not
provided, are located on the same premises and
supply separate users, the gas-piping systems
shall not be interconnected on the outlet side of
the meters or service regulators.
1209.3.2 Interconnections for Standby Fuels.
Wliere a supplementary gas for standby use is
connected downstream from a meter or a service
regulator where a meter is not provided, a device
to prevent backflow shall be installed. A tliree-
way valve installed to admit the standby supply
and, at the same time, shut off tlTe regular supply,
shall be permitted to be used for tliis purpose.
1209.4 Sizing of Gas-Piping Systems.
1209.4.1 General Considerations. Gas-piping
systerns shall be of sucli size and so installed as to
provide a supply of gas sufficient to ineet the
maximum demand wifliout imdue loss of pressure
between the point of delivery and the gas
utilization equipment.
1209.4.2 IVIaximum Gas Demand. Tlie volume
of gas to be provided (in cubic feet per hour) shall
be determmed directly from the manufacturer's
input ratings of the gas utilization equipment
served. Wliere the input rating is not indicated,
the gas supplier, equipment manufacturer, or a
qualified agency shall be contacted or the rating
from Table 12-1 shall be used for estimating the
volimie of gas to be supplied. Tlie total connected
hourly load shall be used as the basis for piping
sizing, assuming all equipment is operating at
fuU capacity simultaiieously.
Exception: Sizing shall be permitted to be
based upon established load diversity factors.
173
Table 12-1 -1209.5
2007 CALIFORNIA PLUMBING CODE
TABLE 12-1
Approximate Gas Input for Typical Appliances
Appliance Input Btu/h. (Approx.)
Space Heating Units
Warra air furnace
Single family
100,000
Multifarrdly, per imit
60,000
Hydronic boiler
Single family
100,000
Multifamily, per unit
60,000
Space-and Water-Heating Units
Hydronic boiler
Single family
120,000
Multifamily, per xinit
75,000
Water-Heating Appliances
Water heater, automatic
storage 30 to 40 gal. tank
35,000
Water heater, automatic
storage 50 gal. tank
50,000
Water heater, automatic instantaneous
Capacity at 2 gal. /minute
142,800
Capacity at 4 gal. /minute
285,000
Capacity at 6 gal. /minute
428,400
Water heater, domestic.
circulating or side-arm
35,000
Cooking Appliances
Range, freestanding.
domestic
65,000
Built-in oven or broUer tinit.
domestic
25,000
Btdlt-in top unit.
domestic
40,000
Other Appliances
Refrigerator
3,000
Clothes dryer. Type 1
(domestic)
35,000
Gas fireplace direct vent
40,000
Gas log
80,000
Barbecue
40,000
Gaslight
2,500
For SI units: 1 Btu per hour = 0.293 W
[NFPA 54: Table 5.4.2.1]
1209.4.3 Sizing Methods. Gas piping shall be
sized in accordance with one of the following:
[NFPA 54: 5.4.3]
(1) Pipe sizing tables or sizing equations in this
chapter.
(2) Other approved engineering methods
acceptable to the Authority Having
Jurisdiction.
(3) Sizing tables included in a listed piping
system manufacturer's installation
instructions.
1209.4.4 Allowable Pressure Drop. The design
pressure loss in any piping system under
maximum probable flow conditions, from the
point of delivery to the inlet connection of the
gas utilization equipment, shall be such that the
supply pressure at the equipment is greater than
the minimum pressure required for proper
equipment operation. [NFPA 54: 5.4.4]
1209.5 Acceptable Piping IVIaterials and Joining
Methods.
1209.5.1 General.
1209.5.1.1 Materials. Materials used for
piping systems shall comply with the
requirements of this chapter or shall be
acceptable to the Authority Having
Jurisdiction. [NFPA 54: 5.6.1.1]
1209.5.1.2 Used Materials. Pipe, fittings,
valves, or other materials shall not be used
again unless they are free of foreign materials
and have been ascertained to be adequate for
the service intended. [NFPA 54: 5.6.1.2]
1209.5.1.3 Other Materials. Material not
covered by the standards specificatioiis listed
herein shall be investigated and tested to
determine that it is safe and siiitable for the
proposed service and, in addition, shall be
recommended for that service by the
manufacturer and shall be acceptable to the
Authority Having Jtuisdiction. [NFPA 54: 5.6.1.3]
1209.5.2 Metallic Pipe.
1 209.5.2.1 Cast-iron pipe shall not be used.
[NFPA 54: 5.6.2.1]
1209.5.2.2 Steel and wrought-iron pipe
shall be at least of standard weight
(Schedule 40) and shall comply with one of
the following standards: DSIFPA 54: 5.62.2]
(1) ANSI/ASME B36.10, Welded and
Seamless Wrought-Steel Pipe
(2) ASTM A 53, Standard Specification
for Pipe, Steel, Black and Hot-Dipped, Zinc-
Coated Welded and Seamless
(3) ASTM A 106, Standard Specification for
174
FUEL PIPING
1209.5
Seamless Carbon Steel Pipe for High-
Temperature Service
1 209.5.2.3 Copper and brass pipe shall not be
used if iiie gas contains more tlian an average
of 0.3 grains of hydrogen stilfide per 100 scf of
gas (0.7 mg/100 L). [NFPA54: 5.6.2.3]
Threaded copper, brass, or aluminum
alloy pipe shall not be used with gases
corrosive to such material. [NFPA 54: 5.6.2.4]
1209.5.2.4 Aluminum alloy pipe shall
comply with ASTM B 241, Specification for
Aluminum-Alloy Seamless Pipe and Seamless
Extruded Tube (except that the use of alloy
5456 is prohibited) and shall be marked at
each end of each length indicating
compliance. Aluminum alloy pipe shall be
coated to protect against external corrosion
where it is in contact with masomy, plaster,
or insulation or is subject to repeated
wettings by such liquids as water,
detergents, or sewage. [NFPA 54: 5.6.2.5]
Aluminum alloy pipe shall not be used in
exterior locations or underground. [NEPA54'
5.6.2.6]
1209.5.3 Metallic Tubing. Seamless copper,
aluminum alloy, or steel tubing shall not be used
with gases corrosive to such material. [NFPA 54:
5.6.3]
1209.5.3.1 Steel tubing shall comply with
ASTM A 539, Standard Specification for
Electric Resistance-Welded Coiled Steel TuUng
for Gas and Fuel Oil Lines, or ASTM A 254,
Standard Specification for Copper Brazed Steel
Tubing. [NFPA 54: 5.6.3.1]
1209.5.3.2 Copper and brass tubing shall
not be used if 1iie gas contains more than an
average of 0.3 g of hydrogen sulfide per 100
scf of gas (0.7 mg/100 L). Copper tubing
shall comply with standard Type K or L of
ASTM B 88, Specification for Seamless Copper
Water Tube, or ASTM B 280, Specification for
Seamless Copper Tube for Air-Conditioning and
Refiigeration Field Service. [NFPA 54: 5.6.3.2]
1209.5.3.3 Aluminum alloy tubing shall
comply with ASTM B 210, Specification for
Aluminum-Alloy Drawn Seamless Tubes, or
ASTM B 241, Specification for Aluminum Alloy
Seamless Pipe and Seamless Extruded Tube.
Aluminum alloy tubing shall be coated to
protect against external corrosion where it is
in contact with masonry, plaster, or
insulation or is subject to repeated wettiiigs
by liquids such as water, detergent, or
sewage. Aluminum alloy tubing shall not be
used in exterior locations or underground.
[NFPA 54: 5.6.3.3]
1209.5.3.4 Corrugated stainless steel tubing
shall be tested and listed in compliance with
Hie construction, installation, and performance
requirements of ANSI/IAS LC-1, Standard
for Fuel Gas Piping Systems Using Corrugated
Stainless Steel Tubing. [NFPA 54: 5.6.3.4]
1209.5.4 Plastic Pipe, Tubing, and Fittings.
Plastic pipe, tubing, and fittings shall be used
outside underground only and shall conform
with ASTM D 2513, Standard Specification for
Thermoplastic Gas Pressure Pipe, Tubing, and
Fittings. Pipe to be used shall be marked "gas"
and "ASTM D 2513." [^JFPA54: 5.6.4.1]
Anodeless risers shall comply with the
following: [NFPA 54: 5.6.4.3]
1209.5.4.1 Factory-assembled anodeless
risers shall be recommended by the
manufacturer for the gas used and shall be
leak-tested by the manufacturer in
accordance with written procedures.
1 209.5.4.2 Service head adapters and field-
assembled anodeless risers incorporating
service head adapters shall be
recommended by the manufacturer for the
gas used by the manufacturer and shall be
design-certified to meet the requirements of
Category I of ASTM F 1973, Factory
Assembled Anodeless Riser and Transition
Fitting on Polyethylene (PE) Fuel Gas
Distribution Systems and the code of Federal
Regulations, Title 49, Part 192.281(e). The
manufacturer shall provide the user with
qualified installation instructions as
prescribed by the code of Federal
Regulations, Title 49, Part 192.283(b).
1 209.5.4.3 The use of plastic pipe, tubing,
and fittings in undiluted liquefied
petroleum gas-piping systems shall be in
accordance with NFPA 58, Liquefied
Petroleum Gas Code.
1209.5.5 Workmanship and Defects. Gas pipe
or tubing and fittings shall be clear and free from
cutting burrs and defects in structure or
tlireading, and shall be thoroughly brushed and
chip and scale blown. Defects in pipe, tubing,
and fittings shall not be repaired. Defective
pipe, tubing, and fittings shall be replaced.
[NFPA 54: 5.6.5]
1209.5.6 Protective Coating. Wliere in contact
witli material or atmosphere exerting a Corrosive
action, metallic piping and fittings coated with a
175
1209.5
2007 CALIFORNIA PLUMBING CODE
corrosion-resistant material shall be used.
External or internal coatings or linings used on
piping or components shall not be considered as
adding strengtii. [NFPA 54: 5.6.6]
1209.5.7 Metallic Pipe Tlireads.
(A) Specifications for Pipe Threads. Metallic
pipe and fitting threads shall be taper pipe
threads and shall comply with ANSI/ASME
Bl.20.1, Standard for Pipe Threads, General
Purpose (Inch). [NETA 54: 5.6.7.1]
(B) Damaged Threads. Pipe with threads that
are stripped, chipped, corroded, or otherwise
damaged shall not be used. Where a weld
opens during the operation of cutting or
threading, that portion of the pipe shall not
be used. [NBPA 54: 5.6.7.2]
(0) Number of Threads. Field threading of
metallic pipe shall be in accordance with
Table 12-2. [NFPA 54: 5.6.7.3]
(D) Thread Compounds. Thread (joint)
compoimds (pipe dope) shall be resistant to
the action of Uquefied petroleum gas or to
any other chemical constituents of the gases
to be conducted through the piping.
TABLE 12-2
Specifications for Threading Metallic Pipe
Approximate Length
Approximate
Iron Pipe
of Threaded
No. of
Size (in.)
Portion (in.)
Threads to Be Cut
1/2
3/4
10
3/4
3/4
10
1
7/8
10
1-1/4
1
11
1-1/2
1
11
2
1
11
2-1/2
1-1/2
12
3
1-1/2
12
4
1-5/8
13
For SI units, 1 in. = 25.4 mm.[NEPA54: 5.6.7.3]
1209.5.8 Metallic Piping Joints and Fittings.
The type of piping joint used shall be suitable for
the pressure-temperature conditions and shall
be selected giving consideration to joint
tightness and mechanical strength under the
service conditions. The joint shall be able to
sustain the maximum end force due to the
internal pressure and any additional forces due
to temperature expansion or contraction,
vibration, fatigue, or to the weight of the pipe
and its contents. [NFPA 54: 5.6.8]
1209.5.8.1 Pipe Joints. Pipe joints shall be
threaded, flanged, brazed, or welded.
Where nonferrous pipe is brazed, the
brazing materials shall have a melting point
in excess of 1,000°F (538°C). Brazing alloys
shall not contain more than 0.05 percent
phosphorus. [NFPA 54: 5.6.8.1]
1209.5.8.2 Tubing Joints. Tubing joints
shall either be made with approved gas
tubing fittings or be brazed wi1h a material
having a melting point in excess of 1,000°F
(538°C). Brazing alloys shall not contain
more than 0.05 percent phosphorus. [NFPA
54:5.6.8.2]
1209.5.8.3 Flared Joints. Flared joints
shall be used only in systems constructed
from nonferrous pipe and tubing where
experience or tests have demonstrated that
the joint is suitable for the conditions and
where provisions are made in the design to
prevent separation of the joints. [NFPA 54:
5.6.8.3]
1209.5.8.4 Metallic Fittings (Including
Valves, Strainers, Filters). [NFPA 54:
5.6.8.4]
(1) Threaded fittings in sizes larger than 4
in. (100 mm) shall not be used unless
acceptable to the Authority Having
Jurisdiction.
(2) Fittings used with steel or wrought-iron
pipe shall be steel, brass, bronze,
malleable iron, or cast iron.
(3) Fittings used with copper or brass pipe
shall be copper, brass, or bronze.
(4) Fittings used with aluminum alloy pipe
shall be of aluminiun alloy.
(5) Cast-iron Fittings.
(a) Flanges shall be permitted.
(b) Bushings shall not be used.
(c) Fittings shall not be used in
systems containing flammable
gas-air mixtures.
(d) Fittings in sizes 4 inches (100 mm)
and larger shall not be used
indoors unless approved by the
Authority Having Jurisdiction.
(e) Fittings in sizes 6 inches (150 mm)
176
FUEL PIPING
1209.5
and larger shall not be used
unless approved by the
Authority Having Jurisdiction.
(6) Aluminum Alloy Fittiiigs. Tlueads shall
not form the joint seal.
(7) Zinc- Aluminum Alloy Fittings. Fittings
shall not be used in systems containing
flammable gas-air mixtures.
(8) Special Fittings. Fittings such as
couplings; proprietary-type joints;
saddle tees; gland-type compression
fittings; and flared, flareless, or
compression-type tubing fittings
shall be (1) used within the fitting
manufacturers' pressure-temperature
recommendations; (2) used within the
service conditions anticipated with
respect to vibration, fatigue, thermal
expansion, or contraction; (3) installed
or braced to prevent separation of the
joint by gas pressure or external
physical damage; and (4) acceptable to
tlie Authority Having Jurisdiction.
1209.5.9 Plastic Piping, Joints, and
Fittings.
Plastic pipe, tubing, and fittings shall be
joined in accordance with flie manufacturers'
instructions. The following shall be
observed when making such joints: [NFPA
54:5.6.9]
(A) The joint shall be designed and installed
so that the longitudinal puUout
resistance of the joint will be at least
equal to the tensile strength of the
plastic piping material.
(B) Heat-fusion joints shall be made in
accordance with qualified procedures
that have been established and proven by
test to produce gastight joints at least as
strong as the pipe or tubing being joined.
Joints shall be made with the joining
method recommended by the pipe
manufacturer. Heat-fusion fittings shall
be marked "ASTM D 2513."
(C) Where compression-type mechanical
joints are used, the gasket material in the
fitting shall be compatible with the
plastic piping and with the gas
distributed by the system. An internal
tubular rigid stiffener shall be used in
conjunction with the fitting. The
stiffener shall be flush with the end of
the pipe or tubing and shall extend at
least to the outside end of the pipe or
tubing and shall extend at least to the
outside end of the compression fitting
when installed. The stiffener shall be
free of rough or sharp edges and shall
not be a forced fit in the plastic. Split
tubular stiffeners shall not be used.
(D) Plastic piping joints and fittings for use
in liquefied petroleum gas-piping
systems shall be in accordance with
Liquefied Petroleum Gas Code, NFPA 58.
1209.5.10 Flanges. All flanges shall comply
with ANSI/ASME B16.1, Standard for Cast Iron
Pipe Flanges and Flanged Fittings; ANSI/ASME
B16.20, Standard for Ring-Joint Gaskets and Grooves
for Steel Pipe Flanges; or MSS SP-6, Standard
Finishes for Contact Faces of Pipe Flanges and
Connecting-End Flanges of Valves and Fittings. The
pressure-temperature ratings shall equal or
exceed that required by the application. [NFPA
54:5.6.10]
(A) Flange Facings. Standard facmgs shall be
permitted for use under this code. Where
150-psi (1,090 kPa) steel flanges are bolted to
Class 125 cast-iron flanges, the raised face
on the steel flange shall be removed. [NFPA
54:5.6.10.1]
(B) Lapped Flanges. Lapped flanges shall be
used only aboveground or in exposed
locations accessible for inspection. [NFPA
54:5.6.10.2]
1209.5.11 Flange Gaskets. The material for
gaskets shall be capable of withstanding the
design temperature and pressure of the piping
system and the chemical constituents of the gas
being conducted witliout change to its chemical
and physical properties. The effects of fire
exposure to the joint shall be considered in
choosing the material. [NFPA 54: 5.6.11]
(1) Acceptable materials include the following:
[NFPA 54: 5.6.11.1]
(a) Metal or metal-jacketed asbestos
(plain or corrugated)
(b) Asbestos
(c) Aluminum "O" rmgs and spiral-
wound metal gaskets
(2) When a flanged joint is opened, the gasket
shall be replaced. [NFPA 54: 5.6.11.2]
(3) Full-face gaskets shall be used with all
bronze and cast-iron flanges. [NFPA 54:
5.6.11.3]
177
1209.6-1209.7
2007 CALIFORNIA PLUMBING CODE
1209.6 Gas Meters.
1209.6.1 Capacity. Gas meters shall be selected
for the maximum expected pressure and
permissible pressure drop. [NFPA 54: 5.7.1]
1209.6.2 Location.
(A) Gas meters shall be located in ventilated
spaces readily accessible for examination,
reading, replacement, or necessary
maintenance. [NEPA 54: 5.7.2.1]
(B) Gas meters shall not be placed where they
will be subjected to damage, such as
adjacent to a driveway; under a fire escape;
in public passages, halls, or coal bins; or
where they will be subject to excessive
corrosion or vibration. [NEPA 54: 5.7.2.2]
(C) Gas meters shall be located at least 3 feet
(0.9 m) from sources of ignition. pMFPA 54:
5.7.2.3]
(D) Gas meters shall not be located where they
will be subjected to extreme temperatures or
sudden extreme changes in temperature.
Meters shall not be located in areas where
they are subjected to temperatures beyond
those recommended by the manufacturer.
[NFPA 54: 5.7.2.3]
1209.6.3 Supports. Gas meters shall be
supported or connected to rigid piping so as not
to exert a strain on the meters. Where flexible
connectors are used to connect a gas meter to
downstream piping at mobile homes in mobile
home parks, the meter shall be supported by a
post or bracket placed in a firm footing or by
other means providing equivalent support.
[NFPA 54: 5.7.3]
1209.6.4 IVieter Protection. Meters shall be
protected against overpressure, back-pressure,
and vacuum where such conditions are
anticipated. [NFPA 54: 5.7.4]
1209.6.5 Identification, Gas piping at multiple
meter installations shall be marked by a metal
tag or other permanent means attached by the
installing agency, designating the building or
the part of the building being suppHed. [NFPA
54: 5.7.5]
1209.7 Gas Pressure Regulators.
1209.7.1 Where Required. A line gas pressiu'e
regulator or gas equipment pressure regulator,
as applicable, shall be installed where the gas
supply pressure is higher than that at which the
branch svipply line or gas utilization eqmpment
is designed to operate or varies beyond design
pressure limits. PSEFPA 54: 5.8.1]
1209.7.2 Listing. The line gas pressure regulator
shall be Usted in accordance with ANSI Z21.80.
[NFPA 54: 5.8.2]
1209.7.3 Location. The gas pressure regtilator
shaUbe accessible for servicing. PS1FPA54: 5.8.3]
1209.7.4 Regulator Protection. Pressure
regulators shall be protected against physical
damage. [NEPA 54: 5.8.4]
1209.7.5 Venting.
(A) Line Gas Pressure Regulators.
[NFPA 54: 5.8.5.1]
(1) An independent vent to the outside of
the buUding, sized ia accordance with
the regulator manufacturer's instructions,
shall be provided where the location of
a regulator is such that a ruptured
diaphragm wUl cause a hazard. Where
there is more than one regulator at a
location, each regulator shall have a
separate vent to the outside or, if
approved by the Authority Having
Jurisdiction, the vent lines shall be
permitted to be manifolded in
accordance with accepted engineering
practices to minimize back-pressure in
the event of diaphragm failure. [See
NFPA 54:5.9.7] for information on
properly locating the vent.) Materials
for vent piping shall be in accordance
with Section 1209.5.
Exception: A regulator and vent-
limiting means combination listed
as complying with ANSI Z21.80,
Standard for line Pressure Regulators,
shall be permitted to be used without
a vent to the outdoors.
(2) The vent shall be designed to prevent
the entry of water, insects, or other
foreign materials that could cause
blockage.
(3) At locations where regulators might be
submerged during floods, a special
antiflood-type breather vent fitting shall
be installed, or the vent line shall be
extended above the height of the
expected flood waters.
(4) A regulator shall not be vented to the
gas equipment flue or exhaust system.
(B) Gas Appliance Pressure Regulators.
Venting' of Gas Appliance :Pressiire Regulators.
Venting of gas appliance pressure regtilators shall
comply with the following requirements: [NFPA
54:9.1.19]
178
FUEL PIPING
1209.7-1209.11
(1) Gas ap-pliance pressure regulators requiring
access to the aimosphere for successful operation
shall be equipped with vent piping leading
outdoors or, if the regulator vent is an integral
part of the equipment, into the combustion
chamber adjacent to a continuous pilot, unless
constructed or equipped with a vent-limiting
means to limit the escape of gas from the vent
opening in the event of diaphragm failure.
(2) Vent-limiting means shall be employed on listed
gas appliance pressure regulators only.
(3) In the case of vents leading outdoors, means shall
be employed to prevent water from entering this
piping and also to prevent blockage of vents by
insects and foreign matter.
(4:) Under no circumstances shall a regulator be
vented to the gas utilization equipment flue or
exhaust system.
(5) In the case of vents entering the combustion
chamber, the vent shall be located so the escaping
gas will be readily ignited by the pilot and the
heat liberated thereby will not adversely affect
the normal operation of the safety shutoff system.
The terminus of the vent shall be securely held in
a fixed position relative to the pilot. For
manufactured gas, the need for aflame anester in
the vent piping shall be determined.
(6) Vent lines from a gas appliance pressure
regulator and bleed lines fivm a diaphragm-type
valve shall not be connected to a common
manifold terminating in a combustion chamber.
Vent lines shall not, terminate in positive-
pressure- type combustion chambers.
(C) Discharge of Vents [NFPA 54:5.9.7]
(1) Tlie discharge stacks, vents, or outlet parts of
all pressure-relieving and pressure-limiting
devices shall be located so thai gas is safely
discharged into the outside atmosphere.
{!) Discharge stacks or vents shall be designed
to prevent the entry of water, insects, or any
other foreign material that could cause
blockage. The discharge stack or vent line
shall be at least the same size as the outlet of
the pressure-relieving device.
1209.7.6 Bypass Piping. Valved aiid regulated
bypasses shall be permitted to be placed around
gas line pressure regulators where continuity of
service is imperative. [NFPA 54: 5.8.6]
1209.7.7 Identification. Line pressure regulators
at multiple regulator installations shall be
marked by a metal tag or other permanent
means designating tlie building or the part of the
building being supplied. [NFPA 54: 5.8.7]
1209.8 Baclc-Pressure Protection.
1209.8.1 Wliere to Install. Protective devices
shall be installed as close to the utilization
equipment as practical, where the design of
txtilization equipment connected is such that
air, oxygen, or standby gases could be forced
into the gas supply system. [NFPA 54: 5.10.1.1]
Gas and air combustion mixers incorporating
double diaphragm "zero" or "atmosphere"
governors or regulators shall require no further
protection unless connected directly to
compressed air or oxygen at pressures of 5 psi
(34 kPa) or more. [NFPA 54: 5.10.1.2]
1209.8.2 Protective Devices. Protective
devices shall include but not be limited to the
following: [NFPA 54: 5.10.2]
(1) Check valves
(2) Three-way valves (of the type that
completely closes one side before starting to
open the other side)
(3) Reverse flow indicators controlling positive
shutoff valves
(4) Normally closed air-actuated positive
shutoff pressure regulators
1209.9 Low-Pressure Protection.
A protective device shall be installed between the
meter and the gas utilization equipment if the
operation of the equipment (i.e., gas compressors) is
such that it could produce a vacuum or a dangerous
reduction in gas pressure at the meter. Such devices
include, but are not limited to, mechanical,
diaphragm-operated, or electrically operated low-
pressure shutoff valves, [NFPA 54: 5,11]
1209.10 Sliutoff Valves. Shutoff valves shall be
approved and shall be selected giving coitsideration
to pressure drop, service uivolved, emergency use,
and reliability of operation. Shutoff valves of size 1
incli (25 mm) National Pipe Thread and smaller shall
beUsted. [NFPA54:5.12]
1209.11 Expansion and Flexibility.
1209.11.1 Design. Piping systems shall be
desigiied to have sufficient flexibility to prevent
thermal expansion or contraction from causing
excessive stresses in the piping m.aterial,
excessive bending or loads at joints, or
undesirable forces or moments at poiiits of
comiections to equipment and at anchorage or
guide points. Formal calculations or model tests
shall be required only where reasonable doubt
exists as to the adequate flexibility of the
'• system. [NFPA 54: 5.13.1]
Flexibility shall be provided by the use of
bends, loops, offsets, or couplings of the slip
179
1209.11-1211.1
2007 CALIFORNIA PLUMBING CODE
type. Provision shall be made to absorb thermal
changes by the use of expansion joints of the
bellows type, or by the use of "ball" or "swivel"
joints. Expansion joints of the slip type shall not
be used inside buildings or for thermal
expansion. Where expansion joints are used,
anchors or ties of sufficient strength and rigidity
shall be installed to provide for end forces due to
fluid pressure and other causes. [NEPA 54: 5.13.1.1]
Pipe alignment guides shall be used with
expansion joints according to the recommended
practice of the joint manufacturer. [NFPA 54:
5.13.1.2]
1209.11.2 Special Local Conditions. Where
local conditions include earthquake, tornado,
unstable ground, or flood hazards, special
consideration shall be given to increased
strength and flexibility of piping supports and
connections. [NFPA 54: 5.13.2]
1210.0 Excess Flow Valve. When automatic excess
flow gas shutoff devices (valves) are used, they shall
be listed and approved and shall be sized for the
maximimn. flow anticipated for the main or branch of
the fuel gas system in which the excess flow valve is
installed.
1211.0 Gas Piping Installation.
1211.1 Piping Underground.
1211.1.1 Clearances. Undergroimd gas piping
shall be installed with sufficient clearance from
any other underground structure to avoid
contact therewith, to allow maintenance, and to
protect against damage from proximity to other
structures. In addition, underground plastic
piping shall be installed with sufficient clearance
or shall be insulated from any source of heat so
as to prevent the heat from impairing the
serviceability of the pipe. [NEPA 54: 7.1.1]
1211.1.2 Protection Against Damage.
(A) Cover Requirements. Undergrotmd piping
systems shall be installed with a minimum
of 18 inches (460 mm) of cover. Where external
damage to the pipe is not likely to result, the
minimum cover shall be 12 inches (300 mm).
Where a minimum of 12 inches (300 mm) of
cover cannot be provided, the pipe shall be
installed in conduit or bridged (shielded).
pMEPA 54: 7.1.2.1]
(B) Trenches. The trench shall be graded so
that the pipe has a firm, substantially
continuous bearing on the bottom of the
trench. [NEPA 54:71.2.2]
(C) Backfilling. Where flooding of the trench is
done to consolidate the backfill, care shall be
exercised to see that the pipe is not floated
from its firm bearing on the trench bottom.
[NEPA 54: 7.1.2.3]
1211.1.3 Protection Against Corrosion. Gas
piping in contact with earth or other material
that could corrode the piping shall be protected
against corrosion in an approved manner. When
dissimilar metals are joined underground, an
insulating coupling or fitting shall be used.
Piping shall not be laid in contact with cinders.
Uncoated threaded or socket-welded joints shall
not be used in piping in contact with soil or
where internal or external crevice corrosion is
known to occur. [NEPA 54: 7.1.3]
1211.1.4 Protection Against Freezing. Where
the formation of hydrates or ice is known to
occur, piping shall be protected against freezing.
[NEPA 54: 7.1.4]
1211.1.5 Piping Through Foundation Wall.
Underground piping, where installed through
the outer foundation or basement wall of a
building, shall be encased in a protective pipe.
The space between the gas piping and the
btdlding shall be sealed to prevent entry of gas
or water. [NEPA 54:71.5]
1211.1.6 Piping Underground Beneath
Buildings. Where the installation of gas piping
underground beneath buildings is unavoidable,
the piping shall be encased in an approved
condmt designed to withstand the superimposed
loads. [NEPA 54: 71.6] The conduit shall extend
into a normally usable and accessible portion of
the building and, at the point where the conduit
terminates in the building, the space between the
conduit and the gas piping shall be sealed to
prevent the possible entrance of any gas leal<age.
Where the end sealing is of a type that wiQ retain
the full pressure of the pipe, the conduit shall be
designed for the same pressure as the pipe. The
conduit shall extend at least 4 inches (100 mm)
outside the building, be vented above grade to
the outside, and be installed so as to prevent the
entrance of water and insects. [NEPA 54: 7.1.6.1]
1211.1.7 Plastic Pipe.
(A) Connection of Plastic Piping. Plastic
pipe shall be installed outside, rmderground
only. [NEPA 54: 7.1.71]
Exception No. 1: Plastic pipe shall be
permitted to terminate aboveground
where an anodeless riser is used.
Exception No. 2: Plastic pipe shall be
permitted to terminate with a wall head
adapter aboveground in buildings.
180
FUEL PIPING
1211.1 -Table 12-3
including basements, where tlie plastic
pipe is inserted in a piping material
permitted for use in buildings.
(B) Connections made outside and
underground between metallic and plastic
piping shall be made only with ASTM D
2513, Standard Specification for Thermoplastic
Gas Pressure Pipe, Tubing, and Fittings,
Category I transition fittings. DSIFPA54: 7.1.7.2]
(C) An electrically continuous corrosion-
resistant tracer wire (irunimiun AWG 14) or
tape shall be buried with the plastic
pipe to facilitate locating. One end shall be
brought aboveground at a building wall or
riser. [NFPA 54: 7.1.7.3]
1 211 .2 Installation of Piping.
1211.2.1 Piping installed aboveground shall be
securely supported and located where it will be
protected from physical damage (also see
1211.1.4). Where passing through an outside
wall, the piping shall also be protected against
corrosion by coating or wrapping with an inert
material approved for such applications. Wliere
piping is encased in a protective pipe sleeve, the
aruTular space between the gas piping and the
sleeve shall be sealed at the wall to prevent the
entry of water, insects, or rodents. |MTA54: 7.2.1]
1211.2.2 Building Structure.
(1) The installation of gas piping shaU not cause
structural stresses within building components
to exceed allowable design limits. [NFPA
54:7.2.2.1]
(2) Approval shall be obtained before any
beams or joists are cut or notched. [NFPA 54:
7.2.2.2] Permission shall be obtained from tlie
Authority Having Jurisdiction.
1211.2.3 Other than Dry Gas. Drips, sloping,
protection from freezing, and branch pipe
connections, as provided for in Section 1211.1.4,
1211.6.1, and Section 1211.8, shall be provided
when other than dry gas is distributed and
climactic conditions make such provisions
necessary. [NFPA 54: 7.2.3]
1211.2.4 Gas Piping to be Sloped. Piping for
other tlian dry gas conditions shall be sloped not
less than 1/4 inch in 15 feet (8 mm in 4572 mm)
to prevent traps. [NFPA 54: 7.2.4]
1211.2.4.1 Ceiling Locations. Gas piping
shall be permitted to be installed in
accessible spaces between a fixed ceiling and
a dropped ceiling, whether or not such
spaces are used as a plenum. Valves shall
riot be located in such Spaces.
Exception: Equipment shutoff valves
required by tliis code shall be permitted
to be installed in accessible spaces
containing vented gas utilization
equipment.
1211.2.5 Prohibited Locations. Gas piping
inside any building shall not be installed in or
through a circulating air duct, clothes chute,
chimney or gas vent, ventilating duct,
dumbwaiter, or elevator shaft. This provision
shall not apply to ducts used to provide
combustion and ventilation air in accordance
with Section 507.0 or to above-ceiling spaces as
covered in Section 1211.2.4.1.
1211.2.6 Hangers, Supports, and Anchors.
(A) Piping shall be supported with pipe hooks,
metal pipe straps, bands, brackets, or
hangers suitable for tlie size of piping; be of
adequate strength and quality; and located
at intervals so as to prevent or damp out
excessive vibration. Piping shall be
anchored to prevent undue strains on
connected equipment and shall not be
supported by other piping. Pipe hangers
and supports shall conform to the
requirements of ANSI/MSS SP-58, Pipe
Hangers and Supports - Materials, Design and
Manufacture. [NFPA 54: 7.2.6.1]
(B) Spacings of supports in gas-piping
installations shall not be greater tlian shown
in Table 12-3. Spacing of supports for CSST
shall be in accordance with the CSST
manufacturer's instruction. [NFPA 54: 7.2.6.2]
(C) Supports, hangers, and anchors shall be
installed so as not to interfere with the free
expansion and contraction of the piping
between anchors. All parts of the supporting
equipment shall be designed and installed
so they will not be disengaged by
movement of tlie supported piping.
[NFPA 54: 7.2.6.3]
TABLE 12-3
Support of Piping
steel Pipe, Spacing of Nominal Size of Spacing of
Nominal Size Supports Tubing Supports
of Pipe (ft.) Smootii-waii (ft.)
(in.) (in. O.D.)
1/2
6
1/2
4
3/4 or 1
8
5/8 or 3/4
6
1-1/4 or larger
10
7/8 or 1
8
(horizontal)
(horizontal)
1-1/4 or larger
every floor
1 or larger
every floor
(vertical)
level
(vertical)
level
For SI units: 1 ft. = 0.305 m. [NFPA 54: Table 7.2.6.2]
181
1211.2-1211.5
2007 CALIFORNIA PLUMBING CODE
1211.2.7 Removal of Pipe. Where piping
containing gas is to be removed, the line shall
be first disconnected from all sources of gas
and then thoroughly purged with air, water,
or inert gas before any cutting or welding is
done. (See Section 1214.6.) [NFPA 54: 7.2.7]
1211.3 Concealed Piping in Buildings.
1211.3.1 General. Gas piping in concealed
locations shall be installed in accordance with
this section. [NFPA 54: 7.3.1]
1211.3.2 Connections. Where gas piping is to
be concealed, unions, tubing fittings, right and
left couplings, bushings, swing joints, and
compression couplings made by combinations of
fittings shall not be used. Connections shall be of
the following type: [NFPA 54: 7.3.2]
(1) Pipe fittings such as elbows, tees, and
couplings.
(2) Joiningtubingbybrazing (see Section 12095.82).
(3) Fittings listed for use in concealed spaces
that have been demonstrated to sustain,
without leakage, any forces due to
temperature expansion or contraction,
vibration, or fatigue based on their
geographic location, application, or operation.
(4) Where necessary to insert fittings in gas pipe
that has been installed in a concealed
location, the pipe shall be reconnected by
welding, flanges, or the use of a ground joint
union with the nut center-punched to
prevent loosening by vibration.
1211.3.3 Piping in Partitions. Concealed gas
piping shall not be located in solid partitions.
[NFPA 54: 7.3.3]
1211.3.4 Tubing in Partitions. This provision
shall not apply to tubing that pierces walls,
floors, or partitions or to tubing installed
vertically and horizontally inside hollow walls or
partitions without protection along its entire
concealed length where both of the following
requirements are met: [NFPA 54: 7.3.4]
(1) A steel striker barrier not less than 0.0508
inches (1.3 mm) thick, or equivalent, is
installed between the tubing and the
finished wall and extends at least 4 inches
(100 inm)beyond concealed penetrations of
plates, fire stops, waU studs, and so on.
(2) The tubing is installed in single runs and is
not rigidly secured.
1211.3.5 Piping in Floors. In industrial
occupancies, gas piping in solid floors such as
concrete shall be laid in channels in the floor and
covered to permit access to the piping with a
minimum of damage to the building. Where
piping in floor charmels could be exposed to
excessive moisture or corrosive substances, the
piping shall be protected in an approved
manner. [NFPA 54: 7.3.5.1]
Exception: In other than industrial occupancies
and where approved by the Authority Having
Jurisdiction, gas piping embedded in concrete
floor slabs constructed with portland cement
shall be stirrounded with a minimum of 1-1/2
inches (38 mm) of concrete and shall not be in
physical contact with other metallic structures
such as reinforcing rods or electrically neutral
conductors. AU piping, fittings, and risers shall
be protected against corrosion in accordance
with Section 1209.5.6. Piping shall not be
embedded in concrete slabs containing qmck-set
additives or cinder aggregate. [NFPA 54: 7.3.5.2]
1211.4 Piping in Vertical Chases. (See Section
1202.0.) Where gas piping exceeding 5 psi (34 kPa) is
located within vertical chases in accordance with
Section 1211.5, the requirements of Sections 1211.5.1
through 1211.5.3 shaU apply. [NFPA 54: 7.4]
1211.5 IVIaxImum Design Operating Pressure. The
maximum design operating pressure for piping
systems located inside buildings shall not exceed 5
psi (34 kPa) unless one or more of the following
conditions are met: [NFPA 54:5.5.1]
(1) The piping system is welded.
(2) The piping is located in a ventilated chase or
otherwise enclosed for protection against
accidental gas accumulation.
(3) The piping is located inside buildings or
separate areas of buildings used exclusively
for one of the following:
(a) Industrial processing or heating
(b) Research
(c) Warehousing
(d) BoUer or mechanical equipment rooms
(4) The piping is a temporary installation for
buildings imder construction.
1211.5.1 Pressure Reduction. (See Section
1202.0.) Where pressure reduction is required in
branch connections for compliance with Section
1211.5, such reduction shall take place either
inside the chase or immediately adjacent to the
outside wall of the chase. Regulator venting and
downstream overpressure protection shall comply
with Section 1209.7.4 and NFPA Section 5.9. The
regulator shall be accessible for service and repair
and vented in accordance with one of the
foUowing: [NFPA 54: 7.4.1]
(1) Where the fuel gas is lighter than air,
regulators equipped with a vent-limiting
182
FUEL PIPING
1211.5-1211.8
means shall be perixutted to be vented into
the chase. Regulators not equipped with a
vent-limiting means shall be permitted to be
vented eitlier directly to the outdoors or to a
point witliin tlie top 1 foot (0.3m) of tlie claase.
(2) Where the fuel gas is heavier than air, the
regulator vent shall be vented only directly
to the outdoors.
1211.5.2 Construction. Chase construction
shall comply with local building codes with
respect to fire resistance and protection of
horizontal and vertical openings. [NFPA 54:
7.4.2]
1211.5.3 Ventilation. A chase shall be
ventilated to the outdoors and only at the top.
Tlie openings shall have a minimum free area (in
square inches) equal to the product of one-half
of the maximum pressure in the piping (in psi)
times tlie largest nominal diameter of that piping
(in inches), or the cross-sectional area of the
chase, whichever is smaller. Where more than
one fuel gas piping system is present, the free
area for each system shall be calculated and tl'ie
largest area used. [NFPA 54: 7.4.3]
1211.6 Gas Pipe Turns. Changes in direction of gas
pipe shall be made by the use of fittings, or factory
)-^ bends. [NFPA 54: 7.5]
1211.6.1 IVIetallic Pipe. Metallic pipe bends
shall comply with the following: [NFPA 54:
7.5.1]
(1) Bends shall be made only with bending
equipment and procedures intended for that
purpose.
(2) All bends shall be smooth and free from
buckling, cracks, or other evidence of
mechanical damage.
(3) The longitudinal weld of the pipe shall be
near the neutral axis of the bend.
(4)
(5)
The pipe shall not be bent through an arc of
more than 90 degrees.
The inside radius of a bend shall be not less
than six times the outside diameter of the
pipe.
1211.6.2 Plastic Pipe. Plastic pipe bends shall
comply with the following: [NFPA 54: 7.5.2]
(1) The pipe shall not be damaged, and the
internal diameter of the pipe shall not be
effectively reduced.
Joints shall not be located in pipe bends.
Tlie radius of the inner curve of such bends
shall not be less than 25 times the inside
diameter of the pipe.
(2)
(3)
(4) Wliere the piping manufacturer specifies the
use of special bending equipment or
procedures, such equipment or procedures
shall be used.
1211.6.3 Eibows. Factory-made welding
elbows or transverse segments cut therefrom
shall have an arc length measured along the
crotch of at least 1 inch (25 mm) for pipe sizes 2
inches and larger. [NFPA 54: 7.5.3]
1 21 1 .7 Drips and Sediment Traps.
1211.7.1 Provide Drips Wliere Necessary. For
other than dry gas conditions, a drip shall be
provided at any point in the line of pipe where
condensate could collect. Wliere required by the
Authority Having Jurisdiction or the serving gas
supplier, a drip shall also be provided at the
outlet of the meter. Tliis drip shall be so installed
as to constitute a trap wherein an accumulation
of condensate will shut off the flow of gas before
it wiU run back into tlie meter. [NFPA 54: 7.6.1]
1211.7.2 Location of Drips. All drips shall be
installed only in such locations that they wUl be
readily accessible to permit cleaning or
emptying. A drip shall not be located where the
condensate is likely to freeze. [NFPA 54: 7.6.2]
1 21 1 .7.3 Sediment Traps. (See Section 1 21 2.7.)
1211.8 Outlets.
1211.8.1 Location and Installation.
(1) Tlie outlet fittings or piping shall be securely
fastened in place. [NFPA 54: 7.7.1.1]
(2) Outlets shall not be located beliind doors.
[NFPA 54: 7.7.1.2]
(3) Outlets shall be located far enough from
floors, walls, patios, slabs, and ceilings to
permit the use of wrenches without
strainiLig, bending, or damaging the piping.
[NFPA 54: 7.7.1.3]
(4) The unthreaded portion of gas piping
outlets shall extend not less than 1 in. (25
mm) through finished ceilings or indoor or
outdoor walls. [NFPA 54: 7.7.1.4]
(5) The unthreaded portion of gas-piping
outlets shall extend not less than 2 inches (50
mm) above the surface of floors or outdoor
patios or slabs. [NFPA 54: 7.7.1.5]
(6) Tlie provisions of Sections 1211,7.1 (4) and (5)
shall not apply to listed quick-disconnect
devices of the flush-mounted type or listed
gas convenience outlets. Such devices shall
be installed in accordance with the manu-
facturers' installation instructions. [NFPA
54: 7.7.1.6]
183
1211.8-1211.13
2007 CALIFORNIA PLUMBING CODE
1211.8.2 Cap All Outlets.
(A) Each outlet, including a valve, shall be
closed gastight with a threaded plug or cap
immediately after installation and shall be
left closed until the gas utilization
equipment is connected thereto. When
equipment is disconnected from an outlet
and the outlet is not to be used again
immediately, it shall be closed gastight.
[NFPA 54: 7.7.2.1]
Exception No. 1: Laboratory equipment
installed in accordance with 1212.2(A)
shall be permitted.
Exception No. 2: The use of a listed
quick-discormect device with integral
shutoff or listed gas convenience outlet
shall be permitted.
(B) Equipment shutoff valves installed in
fireplaces shall be removed and the piping
capped gastight where the fireplace is used
for sohd-fuel burning. [NFPA 54: 7.7.2.2]
1211.9 Branch Pipe Connection. When a branch
outlet is placed on a main supply line before it is
known what size pipe will be cormected to it, the
outlet shall be of the same size as the line that
supplies it. [NFPA 54: 7.8]
1211.10 Manual Gas Shutoff Valves. (Also see
Section 1212.4.)
1211.10.1 Valves at Regulators. An accessible
gas shutoff valve shall be provided upstream of
each gas pressure regulator. Where two gas
pressure regulators are installed in series in a
single gas line, a manual valve shall not be
required at the second regxilator. [NFPA 54: 7.9.1]
1211.10.2 Valves Controlling Multiple
Systems.
(A) Accessibility of Gas Valves. Main gas
shutoff valves controlling several gas piping
systems shall be readily accessible for
operation and installed so as to be protected
from physical damage. They shall be
marked with a metal tag or other permanent
means attached by the instaUing agency so
that the gas piping systems supplied
through them can be readily identified.
[NFPA 54: 7.9.2.1]
(B) Shutoff Valves for Multiple House Lines.
In multiple-tenant buildings supplied
through a master meter, or through one
service regulator where a meter is not
provided, or where meters or service
regulators are not readily accessible from
the equipment location, an individual
shutoff valve for each apartment or tenant
line shall be provided at a convenient point
of general accessibility.
In a common system serving a ntunber
of individual buildings, shutoff valves shall
be installed at each building. [NFPA 54:
7.9.2.2]
1211.10.3 Emergency Shutoff Valves. An
exterior shutoff valve to permit turning off the
gas supply to each building in an emergency
shall be provided. The emergency shutoff valves
shall be plainly marked as such and their
locations posted as required by the Authority
Having Jurisdiction. [NFPA 54: 7.9.2.3]
1211.11 Prohibited Devices. No device shall be
placed inside the gas piping or fittings that will
reduce the cross-sectional area or otherwise obstruct
the free flow of gas, except where proper allowance
in the piping system design has been made for such
a device and where approved by the Authority
Having Jurisdiction. [NFPA 54: 7.10]
1211.12 Systems Containing Gas-Air Mixtures
Outside the Flammable Range. Where gas-air
mixing machines are employed to produce mixtures
above or below the flammable range, they shall be
provided with stops to prevent adjustment of the
mixture to within or approacMng the flammable range.
[NFPA 54: 7.11]
1211.13 Systems Containing Flammable Gas-Air
Mixtures.
1211.13.1 Required Components. A central
premix system with a flammable mixture in the
blower or compressor shall consist of the
following components: [NFPA 54: 7.12.1]
(1) Gas-mixing machine in the form of an
automatic gas-air proportioning device
combined with a downstream blower or
compressor.
(2) Flammable mixture piping, minimum
Schedule 40 NPS.
(3) Automatic firechecks.
(4) Safety blowouts or backfire preventers for
systems utilizing flammable mixture lines
above 2-1/2 inch (65 mm) nominal pipe size
or the equivalent.
1211.13.2 Optional Components.
The following components shall also be
permitted to be utilized in any type of central
premix system: [NFPA 54: 7.12.2]
(1) Flowrneters.
(2) Flame arresters.
1211.13.3 Additional Requirements. Gas-
mixing machines shall have nonsparking
184
FUEL PIPING
1211.12-1211.13
blowers and shall be so constructed that a
flashback will not rupture machine casings.
[NFPA 54: 7.12.3]
1211.13.4 Special Requirements for IWixing
Biowers. A mixing blower system shall be
limited to applications with minimum practical
lengtlis of mixtui-e piping, limited to a maximum
mixture pressure of 10 incli water column (25 Pa)
and limited to gases containing no more tlian 10
percent hydrogen.
The blower shall be equipped with a gas-
control valve at its air entrance so arranged that
gas is admitted to the airstream, entering the
blower in proper proportions for correct
combustion by the type of burners employed,
the said gas-control valve being of either the
zero governor or mechanical ratio valve type
that controls the gas and air adjustment
simultaneously. No valves or other obstructions
shall be installed between the blower discliarge
and the burner or burners. [NFPA 54: 7.12.4]
1211.13.5 Instailation of Gas-iUlixing
IVIacliines.
(A) The machine shall be located in a large,
well-ventilated area or in a small detached
building or cutoff room provided with room
construction and explosion vents in
accordance with sound engineering
principles. Such rooms or below-grade
installations shall have adequate positive
ventilation. [NFPA 54: 7.12.5.1]
(B) Where gas-mixing macliines are installed in
well-ventilated areas, the type of electrical
equipment shall be in accordance with
California Electrical Code, for general service
conditions, unless other hazards in the area
prevail. Where gas-mixing machines are
installed in small detached buildings or
cutoff rooms, the electrical equipment and
wiring shall be installed in accordance witla
California Electrical Code, for hazardous
locations (Articles 500 and 501, Class I,
Division 2). [NFPA 54: 7.12.5.2]
(C) Air intakes for gas-mixing machines using
compressors or blowers shall be taken from
outdoors whenever practical. [NFPA 54:
7.12.5.3]
(D) Controls for gas-mixing machines shall
include interlocks and a safety shutoff valve
of the manual reset tj^e m the gas supply
connection to each machine arranged to
automatically shut off tlie gas supply in the
event of high or low gas pressure. Except for
open burner installations only, the controls
shall be interlocked so that the blower or
compressor will stop operating following a
gas supply failure. Wlaere a system employs
pressurized air, means shall iDe provided to
shut off the gas supply in the event of air
failure. [NFPA 54: 7.12.5.4]
(E) Centrifugal gas-mixmg machines m parallel
shall be reviewed by the user and
equipment manufacturer before installation,
and means or plans for minimizing these
effects of downstream pulsation and
equipment overload shall be prepared and
utilized as needed. [NFPA 54: 7.12.5.5]
1211.13.6 Use of Automatic Firechecks,
Safety Blowouts, or Backfire Preventers.
Automatic firechecks and safety blowouts or
backfire preventers shall be provided in piping
systems distributing flammable air-gas mixtures
from gas-mixing macliines to protect tlie piping
and the machines in the event of flashback, in
accordance witli tlie following: [NFPA 54: 7.12.6]
(A) Approved automatic firechecks shall be
installed upstream as close as practicable to
the burner inlets following the firecheck
maiiufacturers' instructions.
(B) A separate manually operated gas valve
shall be provided at each automatic
firecheck for shutting off the flow of gas-air
mixture through the firecheck after a
flashback has occurred. The valve shall be
located upstream as close as practical to the
inlet of the automatic firecheck.
CAUTION:
Tliese valves shall not be reopened after a flashback
has occurred until the firecheck has cooled
sufficiently to prevent reignition of flie flammable
mixture and has been reset properly.
(C) A safety blowout or backfiring preventer
shall be provided in flie mixture line near the
outlet of each gas-mixing machine where flie
size of the piping is larger than 2-1/2 inch
(65 mm) NFS, or equivalent, to protect the
mixing equipment in the event of an
explosion passing through an automatic
firecheck. The manufacturers' instructions
shall be followed when installing these
devices, particularly after a disc has burst.
The discharge from the safety blowout
or backfire preventer shall be located or
sliielded so lliat particles from the ruptured
disc cannot be directed toward persormel.
Wherever there are interconnected
installations of gas-mixing machines with
safety blowouts or backfire preventers.
185
1211.13-1211.17
2007 CALIFORNIA PLUMBING CODE
provision shall be made to keep the mixture
from other machines from reaching any
ruptured disc opening. Check valves shall
not be used for this ptirpose.
(D) Large-capacity premix systems provided
with explosion heads (rupture disc) to
relieve excessive pressure in pipelines shall
be located at and vented to a safe outdoor
location. Provisions shall be provided for
automatically shutting off the supply of gas-
air mixture in the event of rupture.
1211.14 Electrical Bonding and Grounding.
(A) Each aboveground portion of a gas piping
system that is likely to become energized
shall be electrically continuous and bonded
to an effective ground-fault current path.
Gas piping shall be considered to be bonded
when it is connected to gas utilization
equipment that is cormected to the equip-
ment grounding conductor of the circuit
supplying that equipment. [NFPA 54: 7.13.1]
(B) Gas piping shall not be used as a grounding
conductor or electrode. [NFPA 54: 7.13.2]
1211.15 Electrical Circuits. Electrical circuits shall
not utilize gas piping or components as conductors.
[NFPA 54: 7.14]
Exception: Low-voltage (50 V or less) control
circuits, ignition circuits, and electronic flame
detection device circuits shall be permitted to
make use of piping or components as a part of
an electric circuit.
1211.16 Electrical Connections.
(A) All electrical cormections between wiring
and electrically operated control devices in
a piping system shall conform to the
requirements of California Electrical Code.
(See Section 1211.13.)
(B) Any essential safety control depending on
electric current as the operating medium
shall be of a type that will shut off (fail safe)
the flow of gas in the event of current
failure. [NFPA 54: 7.15.2]
1211.17 Pipe Sizing Methods.
1211.17.1 Where the pipe size is to be
determined using any of the methods in
Sections 1211.17.1.1 through 1211.17.1.3, the
diameter of each pipe segment shall be obtained
from the pipe-sizing tables in Section 1211.17.2
or from the sizing equations in Section
1211.17.3. [NFPA 54: 6.1]
1211.17.1.1 Longest Length Method. The
pipe size of each section of gas piping shall
be determined using the longest length of
piping from the point of delivery to the
most remote outlet and the load of the
section. [NFPA 54: 6.1.1]
1211.17.1.2 Branch Length Method. Pipe
shall be sized as follows: [NFPA 54: 6.1 .2]
(A) Pipe size of each section of the longest
pipe run from the point of delivery to the
most remote outlet shaU be determined
using the longest run of piping and the
load of the section.
(B) The pipe size of each section of branch
piping not previously sized shall be
determined using the length of piping
from the point of delivery to the most
remote outlet in each branch and the
load of the section.
1211.17.1.3 Hybrid Pressure, The pipe size
for each section of higher-pressure gas
piping shall be determined using the longest
length of piping from the point of delivery
to the most remote line pressure regulator.
The pipe size from the line pressure
regulator to each outlet shall be determined
using the length of piping from the
regulator to the most remote outlet served
by the regulator. [NFPA 54: 6. 1 .3]
1211.17.2 Tables for Sizing Gas-Piping
Systems. Tables 12-7 through 12-41 shall be
used to size gas piping in conjtinction with one
of the methods described in Sections 1211.17.1.1
through 1211.17.1.3. [NFPA 54: 6.2]
1211.17.3 Sizing Equations. The inside
diameter of smooth-wall pipe or tubing shall be
determined by the sizing equations 12-1 or 12-2,
using the equivalent pipe length determined by
Sections 1211.17.1.1 through 1211.17.1.3. [NFPA
54: 6.4]
Equation 12-1 Low-Pressure Gas Formula (Less
than 1.5 psi [10.3 l<Pa]): [NFPA 54: 6.4.1]
D=
Q
0.381
19.17
\CrxL/
0206
where:
D = inside diameter of pipe, inches
Q = input rate appliance(s), cubic feet per hour at
60°F (16°C) and 30-inch (759 mm) mercury
column
Pj = upstream pressure, psia (Pj + 14.7)
Pj = downstream pressure, psia (P2 + 14.7)
L = eqtiivalent length of pipe, feet
AH = pressure drop, inches water column (27.7 in.
H20= Ipsi)
186
FUEL PIPING
Table 12-4-1212.2
r
Equation 12-2 High-Pressure Gas Formula (1.5 psi
[10.3 kPa] and above): [NFPA 54: 6.4.2]
D=
Q'
,0.381
18.93 !(£
r(p^'-P2')-Y |
|_ CrxL J
0,206
where:
D = inside diameter of pipe, inches
Q = input rate appliance(s), cubic feet per hour at
60T (16°C) and 30 iiich (759 mm) mercury
colunm
Pi = upstream presstire, psia (Pi + 14.7)
P2 = downstream pressure, psia (P2 + 14.7)
L = equivalent length of pipe, feet.
2H = pressure drop, inches water column (27.7 in.
H2O = 1 psi)
TABLE 12-4
Cr and Y for Natural Gas and Undiluted Propane
at Standard Conditions [NFPA 54: Table 6.4.2]
Formula Factors Gas
Cr
Natural Gas 0.6094 0.9992
Undiluted Propaiie 1.2462 0.9910
For SI units, 1 ft.'= 0.028 m^; 1 ft. = 0.305 m; 1 in.
water column = 0.249 kPa; 1 psi = 6.894 kPa; 1,000
Btu/h = 0.293 kW.
1211.18 [For DSA-SS] Earthquake-actuated Gas
Shutoff Valves. Earthquake-actuated gas shutoff valves,
certified by the State Architect as conforming to California
Referenced Standard 12-16-1, shall be provided for
buildings when such installation is required by local
ordinance. Earthquake-actuated gas shutoff valves which
have not been certified, by the State Architect shall be
prohibited in buildings open to the public under
mandatory installation by local ordinance.
1212.0 Equipment Connections to Building
Piping.
1212.1 Connecting Gas Equipment. Gas utilization
equipment shall be connected to the buildmg piping
in compliance with Sections 1212.4 and 1212.5 by
one of tlie following: [NFPA 54: 9,6.1]
(1) Rigid metallic pipe and fittings.,
(2) Semirigid metallic tubing and metallic
fittiags. Aluminum alloy tubing shall not be
used iLi exterior locations.
(3) Listed flexible gas connectors in compliance
witli ANSI Z21.24, Standard for Connectors for
Gas Appliances. Tlie connector shall be used
in accordance with the terms of their listing
that are completely in the same room as the
equipment.
(4) CSST where installed in accordance with the
manufacturer's instructions.
(5) Listed nonmetallic gas hose connectors in
accordance with 1212.2.
(6) Gas-fired food service (commercial cooking)
equipment listed for use with casters or
otherwise subject to movement for cleaniiig,
and other large and heavy gas utilization
equipment that can be moved, shall be
coraiected in accordance with the coraiector
manufacturer's installation instructions
using a listed appliance connector
complying with ANSI Z21.69, Standard for
Connectors for Movable Gas Appliances.
[NFPA 54: 9.6.1.1]
(7) In 1212.1(2), (3), and (5), the connector or
tubing shall be installed so as to be
protected against physical and thermal
damage. Aluminum alloy tubing and
comiectors shall be coated to protect against
external corrosion where they are in contact
with masonry, plaster, or insulation or are
subject to repeated wettings by such liquids
as water (except rain water), detergents, or
sewage.
1212.2 Use of Nonmetallic Gas Hose Connectors.
Listed nonmetallic gas hose connectors shall be used
in accordance with the terms of tlieir listiiig and as
follows: [NFPA 54: 9.6.2]
(A) Indoor. Indoor gas hose comiectors shall be
used only to comiect laboratory, shop, and
ironing equipment requiring mobility
during operation. An equipmeiit shutoff
valve shall be mstalled where the comiector
is attached to the building piping. The
connector shall be of minimum length and
shall not exceed 6 feet (1829 mm). The connector
shall not be concealed and shaU not extend
from one room to another or pass through
wall partitions, ceilings, or floors.
(B) Outdoor. Outdoor gas hose connectors are
permitted to comiect portable outdoor gas-
fired equipment, An equipment shutoff
valve, a listed quick-discomiect device, or
a listed gas convenience outlet shall be
installed where the connector is attached to
the supply piping and in such a manner to
prevent the accumulation of water or
foreign matter. This connection shall be
made only in the outdoor area where the
equipment is to be used. The connector
lengiii shall not exceed 15 feet (4572 rmn).
187
1212.3-1214.0
2007 CALIFORNIA PLUMBING CODE
1212.3 Connection of Portable and Mobile
Industrial Gas Equipment.
(A) Where portable industrial gas utilizatiori
equipment, or equipment reqiiiring mobility
or subject to vibration, is connected to the
building gas piping system by the use of a
flexible hose, the hose shall be sxoitable and
safe for the conditions under which it can be
used. [NFPA 54: 9.6.3.1]
(B) Where industrial gas utilization equipment
reqtdring mobility is connected to the rigid
piping by the use of swivel joints or
couplings, the swivel joints or couplings
shall be suitable for the service required,
and only the minimum number required
shaU be instaUed. [NFPA 54: 9.6.3.2]
(C) Where industrial gas utilization equipment
subject to vibration is connected to the
building piping system by the use of all-
metal flexible connectors, the connectors
shall be suitable for the service required.
[NFPA 54: 9.6.3.3]
(D) Where flexible connections are used, they
shall be of the minimum practical length
and shall not extend from one room to
another or pass through any walls,
partitions, ceilings, or floors. Flexible
connections shall not be used in any
concealed location. They shall be protected
against physical or thermal damage and
shall be provided with gas shutoff valves in
readily accessible locations in rigid piping
upstream from the flexible connections.
[NFPA 54: 9.6.3.4]
1212.4 Equipment Sliutoff Valves and Connections.
Gas utilization equipment connected to a piping
system shall have an accessible, approved manual
shutoff valve with a nondisplaceable valve member,
or a listed gas convenience outlet [NFPA 54: 9.6.4],
installed within 6 feet (1.8 m) of the equipment it
serves. Where a connector is used, the valve shall be
installed upstream of the connector. A union or
Gas supply inlet
i.
n
To
equipment -
inlet
"1
-< — Tee fitting
Nipple -
Cap^.[
3 in. (80 mm)
minimum
i
Figure 12-1 Metiiod of Installing a Tee Fitting
Sediment Trap.
flanged connection shall be provided downstream
from this valve to permit removal of controls.
Shutoff valves serving decorative gas appliances
shall be permitted to be installed in fireplaces if
listed for such use. [NFPA 54: 9.6.4.1]
1212.5 Quick-Disconnect Devices. Quick-
disconnect devices used to connect equipment to the
building piping shall be Usted. [NFPA 54: 9.6.5.1]
Where they are installed indoors, an approved
manual shutoff valve with a nondisplaceable valve
member shall be installed upstream of the quick-
disconnect device. [NFPA 54: 9.6.5.2]
1212.6 Support of Cliimneys. All portions of
chimneys shall be supported for the design and weight
of the materials employed. Listed factory-built
chitrmeys shall be supported and spaced in accordance
with their listings and the manufacturers' instructions.
1212.7 Sediment Trap. Where a sediment trap is
not incorporated as a part of the gas utilization
equipment, a sediment trap shall be installed as close
to the inlet of the equipment as practical at the time
of equipment installation. The sediment trap shall be
either a tee fitting with a capped nipple in the bottom
outlet, as illustrated in Figure 12-1, or other device
recognized as an effective sediment trap. Illuminating
appliances, ranges, clothes dryers, decorative vented
appUances for installation in vented fireplaces, gas
fireplaces, and outdoor grills shall not be required to
be so equipped. [NFPA 54: 9.6.7]
1212.8 installation of Piping. Piping shall be
instaUed in a manner not to interfere with inspection,
maintenance, or servicing of the gas utilization
equipment. [NFPA 54: 9.6.8]
1213.0 Liquefied Petroleum Gas Facilities and
Piping.
Liquefied petroleum gas facilities shall comply with
NFPA 58, Liquefied Petroleum Gas Code.
1214.0 Pressure Testing and Inspection.
1214.1 General.
1 21 4.1 .1 Prior to acceptance and initial operation,
all piping installations shall be inspected and
pressure-tested to determine that the materials,
design, fabrication, and installation practices
comply with the requirements of this code.
[NFPA 54: 8.1.1.1]
1214.1.2 Inspection shall consist of visual
examination during or after manufacture, fabrica-
tion, assembly, or pressure tests, as appropriate.
Supplementary types of non-destructive
inspection techniques, such as magnetic-particle,
racfiographic, and ultrasonic, shall not be required
unless specifically listed herein or in the
engineering design. [NFPA 54: 8.1.1.2]
188
FUEL PIPING
1214.1 -1214.4
1214.1.3 Where repairs or additions are made
following the pressure test, the affected piping
shall be tested. Minor repairs and additions are
not required to be pressure-tested provided that
the work is inspected and connections are tested
witli a noncorrosive leak-detecting fluid or otlier
leak-detecting methods approved by the
Autliority Having Jurisdiction. [NFPA54: 8.1.1.3]
1214.1.4 Wliere new brandies are installed from
file point of delivery to new appliances, only tlie
newly installed brandies shall be required to be
pressure-tested. Cormections between the new
piping and the existing piping shall be tested witli
a noncorrosive leak-detecting fluid or approved
leak-detecting mefliods. [NFPA 54: 8.1.1.4]
1214.1.5 A piping system shall be tested as a
complete unit or m sections. Under no circum-
stances shall a valve in a line be used as a
bulkhead between gas in one section of the
piping system and test medium in an adjacent
section, unless two valves are installed in series
with a valved "telltale" located between these
valves. A valve shall not be subjected to the test
pressure unless it can be determined that the
valve, including tlie valve-closing mechanism, is
designed to safely withstand the pressure.
[NFPA 54: 8.1.1.5]
1214.1.6 Regulator and valve assemblies
fabricated independently of the piping system in
wliich they are to be installed shall be permitted
to be tested with inert gas or air at the time of
fabrication. [NFPA 54: 8.1.1.6]
1214.1.7 Test Medium. The test medium shall
be air, nitrogen, carbon dioxide, or an inert gas.
OXYGEN SHALL NEVER BE USED.
[NFPA 54: 8.12]
1 21 4.2 Test Preparation.
1214.2.1 Pipe joints, including welds, shall be
left exposed for examination during the test.
[NFPA 54: 8.1.3.1]
Exception: Covered or concealed pipe end
joints that have been previously tested in
accordance with tliis code.
1214.2.2 Expansion joints shall be provided witli
temporary restraints, if required for tlie additional
tlirust load under test. [NFPA 54: 8.1.3.2]
1214.2.3 Appliances and equipment that are not
to be included in the test shall be either
disconnected from the piping or isolated by
blanks, blind flanges, or caps. Flanged joints at
which blinds are inserted to blank off other
- equipment during the test shall not be required
to be tested. [NFPA 54: 8.1.3.3]
1214.2.4 Where the piping system is connected
to appliances, equipment, or equipment com-
ponents designed for operating pressures of less
than the test pressure, such appliances, equip-
ment, or equipment components shall be isolated
from the piping system by disconnecting them
and capping the outlets. [NFPA 54: 8.1.3.4]
1214.2.5 Wliere the piping system is connected
to appliances, equipment, or equipment com-
ponents designed for operating pressures equal to
or greater than the test pressure, such appliances
and equipment shall be isolated from the piping
system by closing the individual appliance
equipment shutoff valves. [NFPA 54: 8.1.3.5]
1214.2.6 All testmg of piping systems shall be
done witli due regard for tlie safety of employees
and the public during the test. Bulkheads,
andiorage, and bracing suitably designed to resist
test pressures shall be installed if necessary. Prior
to testing, the interior of tlie pipe shall be cleared
of all foreign material. [NFPA 54: 8.1.3.6]
1214.3 Test Pressure.
1214.3.1 Test pressure shall be measured witli a
manometer or witli a pressure-measuring device
designed and calibrated to read, record, or
indicate a pressure loss due to leakage during
the pressure test period. Tlie source of pressure
shall be isolated before the pressure tests are
made. Mechanical gauges used to measure test
pressures shall have a range such that the
liighest end of the scale is not greater than five
times the test pressure. [NFPA 54: 8.1.4.1]
1214.3.2 The test pressure to be used shall be no
less than 1-1/2 times the proposed maximum
working pressure, but not less than 3 psi (20 kPa),
irrespective of design pressure. [NFPA 54: 8.1.4.2]
1214.3.3 Test duration shall be not less than 1/2
hour for each 500 cubic feet (14 m^) of pipe
volume or fraction thereof. When testing a
system having a volume less than 10 cubic feet
(0.28 m^) or a system in a single-family dwelling,
the test duration shall be a minimum of 10
minutes. The duration of the test shall not be
required to exceed 24 hours. [NFPA 54: 8.1.4.3]
1 21 4.4 Detection of Leaks and Defects.
1214.4.1 The piping system shall withstand the
test pressure specified without showing any
evidence of leakage or other defects. Any reduc-
tion of test pressures as indicated by pressure
gauges shall be deemed to mdicate the presence
of a leak unless such reduction can be readily
attributed to some otlier cause. [NFPA 54: 8.1.5.1]
1214.4.2 The leakage shall be located by means
of an approved gas detector, a noncorrosive leak
detection fluid, or otlier approved leak detection
methods. Matches, candles, open flames, or
other methods that provide a source of ignition .
shall not be used. [NFPA 54: 8.1.5.2]
189
1214.4-1215.1
2007 CALIFORNIA PLUMBING CODE
1214.4.3 Where leakage or other defects are
located, the affected portiori of the piping system
shall be repaired or replaced and retested. [See
Section 1214.1.3.] [NFPA 54: 8.1.5.3]
1214.5 System and Equipment Leakage Test.
1214.5.1 Test Gases. Leak checks using fuel
gas shall be permitted in piping systems that
have been pressure-tested in accordance with
Section 1214.0. [NFPA 54: 8.2.1]
1214.5.2 Before Turning Gas On. Before gas is
introduced into a system of new gas piping, the
entire system shall be inspected to determine that
there are no open fittings or ends and all valves at
tmused outiets are dosed and plugged or capped.
[NFPA 54: 8.2.2]
1214.5.3 Test for Leal<age. Immediately after the
gas is turned on into a new system or into a
system that has been initially restored after an
interruption of service, the piping system shall be
checked for leakage. Where leakage is indicated,
the gas supply shall be shut off until the necessary
repairs have been made. [NFPA 54: 8.2.3]
1214.5.4 Placing Equipment in Operation.
Gas utilization eqmpment shall not be placed in
operation until after the piping system has been
tested in accordance with Section 1214.5.3 and
purged in accordance with Section 1214.6.2.
[NFPA 54: 8.2.4]
1214.6 Purging.
1214.6.1 Removal From Service. When gas
piping is to be opened for servicing, addition, or
modification, the section to be worked on shall
be turned off from the gas supply at the nearest
convenient point and the line pressure vented to
the outdoors or to ventilated areas of siifficient
size to prevent accumulation of flammable
mixtures. The remaining gas in this section of
pipe shall be displaced with an inert gas as
required by Table 12-5. [NFPA 54: 8.3.1]
TABLE 12-5
Length of Piping Requiring Purging with Inert
Gas for Servicing or Modification
[NFPA 54: Table 8.3.1]
Nominal Pipe
Size (in.)
Length of Piping
Requiring Purging (ft.)
2
>50
3
>30
4
>15
6
>10
8 or larger
Any length
For SI units: 1 ft = 0.305 m.
1214.6.2 Placing in Operation. When piping
full of air is placed in operation, the air in the
piping shall be displaced with fuel gas, except
where such piping is reqtiired by Table 12-6 to
be purged with an inert gas prior to introduction
of fuel gas- The air can be safely displaced with
fuel gas provided that a moderately rapid and
continuous flow of fuel gas is intioduced at one
end of the line and air is vented out at the other
end. The fuel gas flow shall be continued without
interruption until the vented gas is free of air. The
point of discharge shall not be left unattended
during purging. After ptirging, the vent shall then
be dosed. Where required by Table 12-6, the air in
the piping shall first be displaced with an inert
gas, and the inert gas shall then be displaced with
fuel gas. [NFPA 54: 8.3.2]
TABLE 12-6
Length of Piping Requiring Purging with inert
Gas Before Placing in Operation
[NFPA 54: Table 8.3.2]
Nominal Pipe
Size (in.)
Length of Piping Requiring
Purging (ft.)
3
4
6
8 or larger
>30
>15
>10
Any length
For SI units: 1 ft. = 0.305 m.
1214.6.3 Discharge of Purged Gases. The
open end of piping systems being purged shall
not discharge into confined spaces or areas
where there are sources of ignition unless
precautions are taken to perform this operation
in a safe manner by ventilation of the space,
control of purging rate, and elimination of all
hazardous conditions. [NFPA 54: 8.3.3]
1214.6.4 Placing Equipment in Operation.
After the piping has been placed in operation, all
equipment shaU be purged and then placed in
operation, as necessary. [NFPA 54: 8.3.4]
1215.0 Interconnections Between Gas Piping
Systems [NFPA 54: 5.3]
1215.1 Interconnections Supplying Separate Users.
Where two or more meters, or two or more service
regulators where meters are not provided, are
located on the same premises and supply separate
users, the gas-piping systems shall not be
intercoimected on the outlet side of the meters or
service regulators. [NFPA 54: 5.3.1]
190
FUEL PIPING
1215.2-1217.3
1215.2 Interconnections for Standby Fuels.
Where supplementary gas for standby use is
connected downstream from a meter or a service
regulator where a meter is not provided, a device to
prevent backflow shall be installed. [NFPA 54:
5.3.2.1] A three-way valve installed to admit the
standby supply and at the same time shut off the
regular supply shall be permitted to be used for tliis
purpose. [NFPA 54:5.3.2.2]
1216.0 Required Gas Supply.
1216.1 The following regulations, as set forth in
this section and in Section 1217.0, Required Gas
Piping Size, shall be the standard for the
installation of gas piping. All natural gas
regulations and tables are based on the use of gas
having a specific gravity of sixty hundredths
(0.60), supplied at six (6) to eight (8) inches
(152-203 mm) water column pressure at the outlet
of the meter. For undiluted liquefied petroleum
gas, gas piping may be sized for 2,500 Btu per cubic
foot (25.9 Watt-hours /L) at eleven (11) inches (279
mm) water column and specific gravity of one and
fifty-two hundredtlis (1.52).
Note: Where gas of a different specific gravity is to
be delivered, the serviiig gas supplier should be
contacted for specific gravity conversion factors to
use in sizing piping systems from the pipe sizing
tables in fliis chapter.
1 21 6.2 The hourly volume of gas required at each
piping outlet shall be taken as not less than the
maximum hourly ratii\g as Specified by the
manufacturer of the appliance or appliances to be
coimected to each sudi outlet.
1 21 6.3 Where tlae gas appliances to be installed have
not been definitely specified. Table 12-1 may be used
as a reference to estimate requirements of typical
appliances.
To obtain tlie cubic feet per hour (L/sec.) of gas
required, divide u^put of appliances by the average
Btu (Watt-hour) heating value per cubic foot (L) of
file gas. The average Btu (Watt-hour) per cubic foot
(L) of tlie gas in tlie area of tlie installation may be
obtained from tlie serving gas supplier.
1216.4 The size of the supply pipiiig outlet for any
gas appliance shall not be less than one-half (1/2)
inch (15 mm).
The minimum size of any piping outlet for a
mobile home shall be three-quarter (3/4) inch (20 mm).
1217.0 Required Gas Piping Size.
1217.1 Where the maximum demand does not
exceed two hundred fifty (250) cubic feet per hour (2
L/sec.) and the maximum length of piping between
tlie meter and tlie most distant outlet is not over two
hundred fifty (250) feet (76,200 mm), the size of each
section and eacli outlet of any system of gas piping
shall be determined by means of Table 12-7 for steel
pipe, or Table 12-15 for copper tubing systems, or
Table 12-19 for CSST systems. Otlier Systems within
the range of Table 12-7 or 12-15 or Table 12-19 may
be sized from that table or by means of the methods
set forfli in Section 1217.3.
1217.2 To determine the size of each section of pipe
in any system within the range of Table 12-7,
proceed as follows:
(1) Measure tlie length of tlie pipe from the gas
meter location to the most remote outlet on
the system.
(2) In Table 12-7 select tlie length in feet column
and row showing that distance, or the next
longer distance if the table does not give the
exact lengtli.
(3) Starting at the most remote outlet, find in
the row just selected the gas demand for
that outlet. If tlie exact figure of demand is
not shown, choose the next larger fig-
ure in tlie row.
(4) At tlie top of diis column wiH be found the
correct size of pipe.
(5) Using this same row, proceed in a similar
manner for eacli section of pipe serving this
outlet. For each section of pipe, determine
the total gas demand supplied by that
section. Where gas piping sections serve
both heating and cooling equipment and tlie
installation prevents both units from
operating simultaneously, only the larg-
er of tlie two demand loads needs be used in
sizing these sections. .
(6) Size each section of branch piping not
previously sized by measuring the distance
from the gas meter location to the most
remote outlet in that brancli and follow tlie
procedures of steps 2, 3, 4, and 5 above.
Note:
Size branch piping in tlie order of tlieir distance from
the meter location, begiraiing with the most distant
outlet not previously sized.
1217.3 For conditions other than those covered by
Section 1217.1, such as longer runs or greater gas
demands, tlie size of each gas piping system shall be
determined by standard engineering methods
acceptable to tlie Authority Having Jurisdiction, and
each such system shall be so designed tliat the total
191
1217.3-1217.4
2007 CALIFORNIA PLUMBING CODE
pressure drop between the meter or other point of
supply and any outlet when full demand is being
supplied to all outlets, wiU at no time exceed five-
tenihs (0.5) inches (12.7 mm) water coliuim pressure.
1217.4 Where the gas pressure may be higher than
fourteen (14) inches (356 mm) or lower than six (6)
inches (152 mm) of water coltimn, or when diversity
demand factors are used, the design, pipe, sizing,
materials, location, and use of such systems first
shall be approved by the Authority Having
Jurisdiction. Piping systems designed for pressures
higher than the serving gas supplier's standard
delivery pressure shall have prior verification from
the gas supplier of the availability of the design
pressure. Systems using undiluted liquefied
petroleum gas may be sized using Table 12-11 for
steel pipe and Table 12-23 for CSST for eleven (11)
inches (279 mm) of water column and in accordance
with the provisions of Sections 1217.1 and 1217.2. For
copper tubing systems using undiluted liquefied
petroleum gas, the capacity of the tubing shall be
determined by multiplying the values of Table 12-15
by the appropriate factor from Table 12-16.
Figure 12-2 Example Illustrating Use of Tables 12-1 and 12-7
Problem: Determine the required pipe size of each section and outlet of the piping system shown in Figure 12-2. Gas
to be used has a specific gravity of sixty htmdredths (0.60) and eleven hundred (1,100) Btu per cubic foot (11.4 Watt-
hour /L), delivered at eight (8) inch (203 mm) water column pressure.
150,000 btu/h
M3,950W)
Furnace
Section 3
20'
- (6096 mm) -
r-
iH
Section 2 Section 1 >
10' 10'
.(3048 rnmM3048 mm)„
30 gallon (113.6 1)
Automatic
Water Heater
u
o
*. .
3
Gas IVIeter
^J
v|_^
Gas
Refrigerator
Range
Solution:
(1) Maximum gas demand of outlet A —
32 cubic feet per hour (0.21 L/sec.) (from Table 12-1).
Maximum gas demand of outlet B —
3 cubic feet per hotir (0.02 L/sec.) (from Table 12-1).
Maximum gas demand of outlet C —
59 cubic feet per hour(0.46L/sec.) (from Table 12-1).
Maximum gas demand of outlet D —
136 cubic feet per hour (1.1 L/sec.) (150,000 Btu/hour [43,950 W])
divided by 1,100 Btu per cubic foot (11.4 Watt-hour/L)
(2) The length of pipe from the gas meter to the most remote outlet (outlet A) is 60 feet (18,288 mm).
(3) Using the length in feet column row marked 60 feet (18,288 mm) in Table 12-7:
Outlet A, suppl)dng 32 cubic feet per hour (0.21 L/sec), requires one-half (1 /2) inch (15 mm) pipe. Section 1, suppljong outlets
A and B, or 35 cubic feet per hotir (0.24 L/sec.) requires one-half (1 /2) inch (15 mm) pipe.
Section 2, supplying outlets A, B, and C, or 94 cubic feet per hour (0.7 L/sec.) requires three-quarter (3/4) inch (20 mm) pipe.
Section 3, suppl5nLng outlets A, B, C, andD, or 230 cubicfeetperhour (1.8 L/sec), requires one and one quarter (1-1/4) inch (32
mm) pipe.
(4) Using the column marked 60 feet (18288 mm) in Table 12-7 (no column for actual length of 55 feet [16,764 mm]: Outlet B
suppl3ang 3 cubic feet per hour (0.02 L/sec), requires one-half (1 /2) inch (15 mm) pipe.
Outlet C, supplying 59 cubic feet per hour (0.46 L/sec), requires one-half (1/2) inch (15 mm) pipe.
(5) Using the column marked 50 feet (15,240 mm) in Table 12-7:
Outlet D, suppl}dng 136 cubic feet per hour (1.1 L/sec), requires (1) inch (25 rrmi) pipe.
192
FUEL PIPING
Table 12-7
Table 1 2-7 Schedule 40 MetalHc Pipe [NFPA Table 6.2 (a)]
Gas:
Natural
Inlet Pressure:
Less than 2
psi
Pressure Drop;
0.3 in. w.c.
Specific Gravity;
0.60
Pipe Size (In.)
Nominal:
'A
%
1
Wi
VA
2
i'A
3
4
5
6
8
10
12
Actual ID:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
8.047
6.066
7.98]
10.020
11.9S8
Lengtii (ft)
Cap.icity in Cubic Feet of Gas per Hour
JO
m.
273
514
1,000
1,580
3,050
4,860
8,580
17,500
31.700
51,300
106,000
191,000
303,000
20
90
188
353
720
1,090
2,090
3,340
5,900
12.000
21,800
35,300
72,400
132,000
208,000
90
72
161
284
683
873
1,680
2,080
4,740
9,660
17,600
28,300
68,200
106,000
157,000
40
02
129
243
499
747
1,44,0
2,290
4,050
8,270
15,000
24,200
49,800
90,400
143,000
60
55
114
216
442
662
1,280
2,030
3,690
7,330
13,300
21,500
44,100
80,100
127,000
60
50
104
196
400
000
1,160
1,840
3,260
6,640
12,000
19,600
40,000
72,600
115,000
70
46
95
179
308
552
1,060
1,690
3,000
6,110
11,100
17,900
36,800
66,800
106,000
80
42
89
107
843
614
989
1,680
2,790
5,680
I0,.300
16,700
34,200
62,100
98,400
90
40
83
l!i7
322
482
928
1,480
2,610
6,330
9,050
1.5,600
32,100
68,300
92,300
lOO
.38
79
148
304
455
877
1,400
2,470
5,040
9,110
14,800
30,300
55,100
87,200
125
33
70
131
269
403
777
1,240
2,190
4.460
8,080
13,100
26,900
48,800
77,300
160
30
63
119
244
360
704
1,120
1,980
4,050
7,320
11,900
24,300
4:4,200
70,000
175
28
58
109
224
336
648
1,030
1,820
3,720
6,730
10,900
22,4:00
40,700
64,400
200
26
54
102
209
313
602
960
1,700
3,460
6,260
10,100
20,800
37,900
59,900
250
28
48
90
186
277
534
861
1,600
3,070
6,650
8,990
18,500
33,600
63,100
SOO
21
43
82
168
251
484
771
1,360
2,780
5,030
8,150
16,700
30,400
48,100
350
l.q
40
75
164
231
446
709
1,260
2,660
4,630
7,490
15,400
28,000
44,300
40O
18
37
70
143
215
414
660
1,170
2,380
4,310
6,970
14,300
26,000
41,200
450
17
36
60
136
202
, 3S9
619
1,090
2,230
4,040
6,640
13,400
24,400
38,600
500
16
.33
62
127
191
867
585
1,0.30
2,110
3,820
6,180
12,700
23,100
36,500
560
\h
31
59
121
181
349
666
982
2,000
8,620
5,870
12,100
21,900
34,700
600
14
30
56
115
173
333
530
937
1,910
3,460
5,000
11,600
20,900
33,100
650
14
29
54
110
165
318
608
897
1,830
3,310
6,360
11,000
20,000
31,700
700
la
27
52
106
159
306
488
862
1,760
3,180
6,160
10,600
19,200
30.400
760
13
26
60
102
153
296
470
830
1,690
3.060
4,960
10,200
18,600
29,300
800
12
26
48
99
148
286
464
802
1,640
2,960
4,790
9,84:0
17,900
28,300
850
12
26
46
96
143
2V6
4.39
776
1,580
2,860
4,640
9,630
17,300
27,400
900
11
24
45
93
139
267
430
762
1,530
2,780
4,500
9,240
16,800
26,600
950
11
23
44
90
135
259
413
731
1,490
2,700
4,370
8,970
16,300
25,800
1,000
11
23
43
87
131
252
402
711
1,460
2,620
4,260
8,720
16,800
25,100
1,100
10
21
4:0
83
124
240
382
675
1,380
2,490
4,030
8,290
16,100
23,800
1,200
NA
20
39
79
119
229
364
644
1,310
2,380
3,850
7,910
14,400
22,700
1,300
NA
20
37
70
114
219
.349
617
1,260
2,280
3,680
7,5'70
13,700
21,800
1,400
NA
19
36
73
109
210
336 ■
592
1,210
2,190
3,540
7,270
13,200
20,900
1,600
NA
18
34
70
105
203
323
571
1,160
2,110
3,410
7,010
12,700
20,100
1,000
NA
18
33
68
102
1S6
312
651
1,120
2,030
8,290
6,770
12,300
19,600
1,700
NA
17
32
66
98
189
302
533
1,090
1,970
3,190
0,650
11,900
18,800
1,800
NA
16
31
04
85
184
293
517
1,050
1,910
3,090
6,350
11,500
18,300
1,900
NA
IS
30
62
93
178
284
502
1,020
1,860
3,000
6,170
11,200
, 17,700
2,000
NA
16
29
60
90
173
276
488
1,000
1,800
2,920
6,000
10,900
17,200
NA means a flow of less Uian 10 c£li.
Note: All table entries are rounded to 3 signilkant digits.
193
Table 12-8
2007 CALIFORNIA PLUMBING CODE
Table 1 2-8 Schedule 40 Metallic Pipe [NFPA Table 6.2(b)]
Gas:
Natural
Inlet Pressure:
Less tiian 2 psi
Pressure Drop:
0.5 in. w.c.
Specific Gravity:
0.60
Pipe Size (in.)
Nominal:
■/S
3/4
1
I'A
1V4
2
2'/4
3
4
5
6
8
10
12
Actual ID:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
5.047
6.065
7.981
10.020
11.938
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
172
360
678
1,390
2,090
4,020
6,400
11, .300
23,100
41,800
67,600
1.39,000
252,000
399,000
20
lis
247
466
957
1,430
2,760
4,400
7,780
15,900
28,700
46,500
95,500
173,000
275,000
30
95
199
374
768
1,150
2,220
3,530
6,250
12,700
23,000
37,300
76,700
139,000
220,000
40
81
170
320
657
985
1,900
3,020
5,350
10,900
19,700
31,900
65,600
119,000
189,000
50
72
151
284
583
873
1,680
2,680
4,740
9,660
17,500
28,300
58,200
106,000
167,000
60
65
137
257
528
791
1,520
2,430
4,290
8,760
15,800
25,600
52,700
95,700
152,000
70
60
126
237
486
728
1.400
2,230
3,950
8,050
14,600
23,600
48,600
88,100
139,000
SO
56
117
220
452
677
L.'SOO
2,080
3,670
7,490
13,600
22,000
4.5,100
81,900
130,000
90
52
110
207
424
635
1,220
1,950
3,450
7,030
12,700
20,600
42,300
76,900
122,000
100
50
104
195
400
600
1,160
1,840
3,260
6,640
12.000
19,500
40,000
72,600
115,000
125
44
92
173
355
532
1,020
1,630
2,890
5,890
10,600
17,200
35,400
64.300
102,000
150
40
83
1.57
322
482
928
1,480
2,610
5,330
9.650
15,600
.32,100
58,300
92,.300
175
37
77
144
296
443
854
1,360
2,410
4,910
8,880
14,400
29,500
53,600
84,900
200
34
71
134
275
412
794
1.270
. 2,240
4,560
8,260
13,400
27,500
49,900
79,000
250
30
63
119
244
366
704
1,120
1,980
4,050
7,320
11,900
24,300
44,200
70,000
300
27
57
108
221
331
638
1,020
1,800
3,670
6,630
10,700
22,10Q
40,100
63,400
350
25
53
99
203
305
587
935
1,6.50
3,370
6,100
9,880
20,300
36,900
58,400
400
23
49
92
189
283
546
870
1,540
3,140
5,680
9,190
18,900
34,300
54,300
450
22
46
85
177
266
512
816
1,4-10
2,940
5,330
8,620
17,700
32,200
50,900
500
21
43
82
168
251
484
771
1,360
2,780
5,030
8,150
16,700
30,400
48,100
5S0
20
41
78
159
2.39
459
"732
1,290
2,640
4,780
7,740
15,900
28,900
45,700
600
19
39
74
152
228
438
699
1,240
2,520
4,560
7,380
15,200
27,500
43,600
650
18
38
71
145
218
420
669
1,180
2,410
4.360
7,070
14,500
26,400
41,800
700
17
36
68
140
209
403
643
1,140
2,320
4,190
6,790
14,000
25,300
40,100
750
17
35
66
135
202
389
619
1,090
2,230
4,040
6,540
13,400
24,400
38,600
800
16
34
63
1.30
195
37.5
598
1,060
2,160
3,900
6,320
13,000
23,600
37,300
850
16
S3
61
126
189
363
579
1,020
2,090
3,780
6,110
12,600
22,800
36,100
900
15
32
59
122
183
352
561
992
2,020
3,660
5,930
12,200
22,100
35,000
950
15
31
58
lis
178
.342
545
963
1,960
3,550
5,760
11,800
21,500
34,000
1,000
14
30
56
115
173
333
E30
937
1,910
3.460
5,600
11,500
20,900
33,100
1,100
14
28
53
109
164
316
503
890
1,810
3,280
5,320
10,900
19,800
31,400
1,200
13
27
51
104
156
301
480
849
1,730
3,130
5,070
10.400
18,900
30,000
1,300
12
26
49
100
150
289
460
813
1,660
3,000
4,860
9,980
18,100
28,700
1,400
12
25
47
96
I'M
277
4'12
781
1,590
2,880
4,670
9,590
17,400
27,600
1,500
11
24
45
93
139
267
426
752
1,530
2,780
4,500
9,240
16,800
26,600
1,600
11
23
44
89
134
258
411
727
1,480
2,680
4,340
8,920
16,200
25,600
1,700
11
22
42
86
1.30
250
398
703
1,430
2,.590
4,200
8,630
15,700
24,800
1,800
10
22
41
84
126
242
386
682
1,390
2,-520
4,070
a,.370
15,200
24,100
1,900
10
21
40
81
122
235
375
662
1,350
2,440
3,960
8,130
14.800
23,400
2,000
NA
20
39
79
119
229
364
1
6*1
1,310
2,380
3,850
7,910
14,400
22,700
NA means a flow of less than 10 cfli.
Note: All table entries are rounded to 3 significant digits.
194
FUEL PIPING
TatDle 12-9
Table 1 2-9 Schedule 40 MetaUic Pipe [NFPA Table 6.2 (c)]
Gas:
Natural
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity:
0.60
Pipe Size (in.)
Nominal:
>A
M
1
VA
1%
2
VA
3
4
Actual ID;
0.622
0.824
1.049
1.380
I.GIO
2.067
2.469
3.068
4.026
LengUi (ft)
Capacity in
Cubic Feet of Gas per Hour
10
1,510
3,040
5,560
11,400
17,100
32,900
52,500
92,800
189,000
20
1,070
2,1.50
3,930
8,070
12,100
23,300
37.100
65,600
134,000
30
869
1,760
3,210
6,590
9,880
19,000
30,300
53,600
109,000
40
753
1,520
2,780
5,710
8,550
16,500
26,300
46,400
94,700
BO
673
1,360
2,490
5,110
7,650
14,700
23,500
41,500
84,700
eo
61.5
1,240
2,270
4,660
6,980
13,500
21,400
37,900
77,300
70
569
1,150
2,100
4,320
6,470
J2.500
19,900
.35,100
71,600
SO '
532
1,080
1,970
4,040
6,050
11.700
18,600
32,800
67,000
90
502
1,010
1,850
3,810
5,700
11,000
17,500
30,900
03,100
100
462
934
1,710
3,510
5,260
10,100
16,100
28,500
58,200
125
414
836
1,.5.30
3,140
4,700
9,060
14,400
25,500
52,100
150
372
751
1,370
2,820
4,220
8,130
13,000
22,900
46,700
175
344
696
1,270
2,601
3,910
7,530 ■
12,000
21,200
43,300
200
SIS
642
1,170
2,410
3.610
6,960
11,100
19,600
40,000
250
279
583
1,040
2,140
3,210
6.180
9,850
17,400
35,500
300
253
528
945
1,040
2,910
5,600
8,920
15,800
32,200
350
232
486
869
1,790
2,670
5,160
8,210
14,500
29,600
400
216
452
809
1,660
2,490
4,790
7,640
13,500
27,500
450
203
424
759
1,560
2,330
4,500
7,170
12,700
26,800
500
192
401
717
1,470
2,210
4,250
6,770
12,000
24,400
650
1 82
381
681
1,400
2,090
4,030
0,430
1 1,400
23,200
600
174
363
650
1,330
2.000
3,850
6.130
10,800
22,100
650
166
348
622
1,280
1,910
3,680
5.870
10,400
21,200
700
160
334
598
1,230
1,840
S.540
5,640
9,970
20,300
750
154
322
576
1,180
1,770
3,410
5,440
9,610
19,600
800
149
311
556
1,140
1,710
3,290
5,250
9,280
18,900
850
144:
301
538
1,100
1,6.50
3,190
5,080
8,980
18,300
900
139
292
522
1,070
1,600
3,090
4,930
8,710
17.800
950
135
283
507
1,040
1,560
3,000
4,780
8,460
17.200
1,000
132
275
493
1,010
1,520
2,920
4,650
8,220
16,800
1,100
125
262
468
960
1,440
2,770
4,420
7,810
15,900
1,200
119
2.'i0
446
917
1,370
2,640
4.220
7.450
l!j,200
1,300
114
239
4.27
878
1,320
2.530
4,040
7,140
14,600
1,400
110
230
411
843
1,260
2,430
3,880
6,860
14,000
1,500
106
221
396
812
1,220
2,340
3,740
6,600
13,500
1,600
102
214
382
784
1,180
2,260
.3,610
6,380
13,000
1.700
99
207
370
759
1,140
2,190
3,490
6,170
12,600
1,800
96
200
358
736
1,100
2,120
3,390
5,980
12,200
1,900
93
105
348
715
1.070
2,0BO
3,290
5,810
11,900
2,000
91
189
339
695
1.040
2,010
3,200
6,650
11,500
Note: All tabic entries nre rounded to 3 .significant digiui.
195
Table 12-10
2007 CALIFORNIA PLUMBING CODE
Table 12-10 Schedule 40 MetalUc Pipe [NTPA Table 6.2(d)]
Gas:
Natural
Inlet Pressure:
3.0 psi
Pressure Drop:
2.0 psi
Specific Gravily:
0.60
Pipe Size (in.)
Nominal:
14
%
1
1V4
V/i
2
2W
3
4
Actual ID:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity ir
Cubic Feet of Gas per Hour
10
2,350
4,920
9,270
19,000
28,500
54,900
87,.500
155,000
316,000
20
1,620
3,380
6,370
13,100
19,600
37,700
60,100
106,000
217,000
30
1,300
2,720
5,110
10,500
15,700
30,300
48,300
85,400
174,000
40
1,110
2,320
4,380
8,990
13,!;00
25,900
41 ,,300
73,100
149,000
50
985
2,060
3.880
7,970
11,900
23,000
36,600
64,800
132.000
60
892
1,870
3,520
7,220
10,800
20,800
33,200
58.700
120,000
70
821
1,720
3,230
6,640
9,950
19,200
30,500
54,000
110.000
80
764
1,600
3,010
6,180
9.260
17,800
28,400
50,200
102.000
90
717
1,500
2,820
5,800
8.680
15,700
26.700
47.100
96,100
100
677
1,420
2,670
5,470
8,200
15,800
26,200
44,500
90,800
125
600
1,250
2,360
4,850
7,270
14.000
22,300
39,500
80,500
150
544
1,140
2,140
4,400
6,590
12.700
20,200
35,700
72,900
175
500
1,050
1,970
4,040
6,060
11,700
18,600
32,900
67,100
200
465
973
1,830
3,760
5,640
10,900
17,300
30.600
62,400
250
412
862
1,620
3,330
5,000
9,620
15.300
27.100
55,300
300
374
781
1,470
3.020
4.530
8,720
13,900
24,600
50,100
350
344
719
1,3.50
2,780
4.170
8,020
12,800
22.600
46,100
400
320
669
1,260
2,590
3,870
7,460
11,900
21,000
42,900
450
300
627
1,180
2,430
3,640
7,000
11,200
19,700
40,200
500
283
593
1.120
2,290
3,430
6,610
10,!500
18,600
38,000
550
269
563
1,060
2,180
3,260
6,280
10,000
17,700
36,100
600
257
537
1,010
2,080
3,110
5.990
9,550
15,900
34,400
650
246
514
969
1,990
2,980
5,740
9,150
16,200
33,000
700
236
494
931
1,910
2,860
5,510
8.790
15,500
31.700
750
228
475
897
1,840
2,760
.5,310
8.470
15,000
30,500
800
220
460
866
1,780
2,660
5,130
8.180
14.500
29,500
850
213
445
838
1,720
2,580
4,960
7,910
14,000
28,500
900
206
431
812
1,670
2,500
4,810
7,670
13,600
27,700
950
200
419
7S9
1,620
2,430
4,670
7,450
■ 13,200
26,900
1,000
195
407
767
1,580
2,360
4,J>50
7,240
12,800
26,100
1.100
185
387
729
1,500
2,240
4,320
6,890
12.200
24.800
1,200
177
369
695
1,430
2,140
4,120
6,570
11.600
2.3,700
1,300
169
353
666
1,370
2,050
3,940
6,290
11.100
22,700
1,400
162
340
640
1,310
1,970
3,790
6,040
10,700
21,800
1,500
156
327
616
1,270
1.900
3.650
5,820
10,300
21,000
1,600
151
316
595
1,220
1,830
3,530
5,620
10,000
20,300
1,700
146
306
576
1,180
1,770
3,410
5,440
9,610
19,600
1,800
142
296
558
1,150
1,720
3,310
5,270
9,320
19,000
1,900
138
238
542
1,110
1,670
3,210
5,120
9,050
18,400
2,000
134
280
527
1,080
1,620
3,120
4,980
8,800
18,000
Note: All table entries are rounded to 3 sigBificant digits.
196
FUEL PIPING
Table 12-11
Table 12-1 1 Schedule 40 Metallic Pipe [NEPA Table 6.2(e)]
Gas:
Natiural
Inlet Pressure;
5.0 psi
Pressure Drop:
3.5 psi
Specific Gravity:
0.60
Pipe Size (in.)
Nominal:
'/S
»4
1
VA
VA
2
21^
3
4
Actual ID:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in
Cubic Feet of Gas per Hour
10
.S,190
6,430
11.800
24.200
36,200
69,700
111,000
196,000
401,000
20
2,250
4,550
8.320
17.100
25,600
49.300
78,600
139,000
283,000
30
1,840
3,720
6.790
14,000
20.900
40,300
64,200
113,000
231,000
40
1.590
3,220
5,880
12,100
18,100
34,900
56,600
98,200
200,000
50
1,430
2,880
5,260
10.800
16,200
31,200
49,700
87,900
179,000
60
1,300
2,630
4,800
9.860
14,800
28.500
45,400
80,200
164,000
70
1,200
2,430
4,450
9.130
13,700
26.400
42,000
74,300
151,000
80
1,1,50
2,330
4,260
8,540
12,800
24,700
,39,300
69,500
142,000
90
1,060
2,160
3,920
8,050
12,100
23,200
37,000
65,500
134,000
100
979
1,980
3,620
7,430
11,100
21,400
34,200
60,400
123,000
125
876
1.770
3,240
6,640
9,950
19,200
30,600
54,000
110,000
150
786
1.590
2,910
5,960
8,940
17,200
27,400
48,600
98,900
175
728
1.470
2,690
5,520
8,270
15,900
25,400
44,900
91,600
200
673
1.360
2.490
6,100
7,650
14,700
23,500
41,600
84,700
250
558
1,170
2.200
4,510
6,760
13,000
20,800
36,700
74,900
300
506
1,060
1.990
4,090
6,130
11,800
18,800
33,300
67,800
350
465
973
1.830
3.760
5,640
10,900
17,300
30,600
62,400
400
433
905
1,710
3.500
5,250
10,100
16,100
28,500
58,100
m
406
849
1,600
3.290
4,920
9.480
15,100
26,700
54,500
500
384
802
1,510
3.100
4,650
8.950
14„300
25,200
51,500
550
364
762
1,440
2,950
4,420
8,500
13,600
24.000
48,900
600
348
727
1.370
2,810
4,210
8.110
12,900
22.900
46,600
550
333
696
1,310
2,690
4.030
7,770
12.400
21,900
44,600
700
320
669
1,260
2,590
3,880
7.460
11,900
21.000
42,900
■ 750
308
644
1,210
2.490
3.730
7,190
11.500
20.300
41,300
800
298
622
1,170
2.410
3.610
6,940
11.1,00
19,000
39,900
850
288
602
1,130
2.330
3.490
6,720
10.700
18,900
38,600
900
279
684
1.100
2,260
3.380
6,520
10.400
18,400
37,400
960
271
567
1,070
2,190
3,290
6,330
10.100
17,800
36,400
1,000
2(J4
651
1,040
2,130
3,200
6,1,50
9,810
17,300
.35,400
1,100
250
524
987
2,030
3.030
5,840
9,320
16,500
33,600
1,200
239
500
941
1,930
2.900
5.680
8.890
15.700
32.000
1,300
229
478
901
1,850
2.770
5,340
8,510
15.000
30,700
1,400
220
460
866
1,780
2,660
,6.130
8.180
14.600
29.500
1.500
212
443
834
1,710
2,570
4,940
7,880
13.900
28,400
1,600
205
428
806
1,650
2,480
4,770
7,610
13.400
27,400
1,700
198
414
780
1,600
2,400
4,620
7,360
13.000
26.500
1,800
192
401
756
1,550
2,330
4,4,80
7,140
12,600
26.700
1,900
186
390
734
1,510
2,260
4,350
6,930
12,300
26.000
2,000
181
379
714
1,470
2,200
4,230
6,740
11,900
24,300
Note: All table entries are rounded to 3 significant digits.
197
Table 12-12
2007 CALIFORNIA PLUMBING CODE
Table 12-12 Semi-Rigid Copper Tubing [NFPA Table 6.2(f)]
Gas:
Natural
Inlet Pressure:
Less than 2 psi
Pressure Drop:
0.3 in. W.C.
Specific Gravity:
0.60
Tube Size (in.)
K&L:
Vi
%
'A
'/a
%
1
IW
IVi
2
ACR:
%
V6
%
»/i
%
I'/ft
1%
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:*
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
20
42
85
MS
210
448
806
1,270
2,650
20
14
29
58
102
144
30S
554
873
1,S20
30
11
23
47
82
116
247
446
701
1,460
40
10
20
40
70
99
211
381
600
1,250
50
NA
17
35
62
88
187
337
532
1,110
60
NA
16
32
56
79
170
306
482
1,000
'70
NA
14
29
52
73
156
281
443
924
80
NA
13
27
48
68
145
262
413
859
90
NA
13
26
45
64
136
245
387
806
100
NA
12
24
43
60
129
232
366
761
125
NA
11
22
38
53
114
206
324
675
■150
NA
10
20
34
48
103
186
294
612
175
NA
NA
18
31
45
95
171
270
563
200
NA
NA
17
29
41
89
159
251
523
250
NA
NA
15
26
37
78
141
223
464
300 ■
NA
NA
13
23
33
71
128
202
420
350
NA
NA
12
22
31
65
118
186
337
400
NA
NA
11
20
28
61
110
173
360
450
NA
NA
11
19
27
57
103
162
338
500
NA
NA
10
18
25
54
97
153
319
550
NA
NA
NA
17
24
51
92
145
303
600
NA
NA
NA
16
23
49
88
139
289
650
NA
NA
NA
15
22
47
84
133
277
700
NA
NA
NA
15
21
45
81
128
266
750
NA
NA
NA
14
20
43
78
123
256
800
NA
NA
NA
14
20
42
75
119
247
860
NA
NA
NA
13
19
40
73
115
239
900
NA
NA
NA
13
18
39
71
111
232
950
NA
NA
NA
13
IS
38
69
lOS
225
1,000
NA
NA
NA
12
17
37
67
105
219
1,100
NA
NA
NA
12
16
35
63
100
208
1,200
NA
NA
NA
11
16
34
60
95
199
1,300
NA
NA
NA
11
15
32
58
91
190
1,400
NA
NA
NA
10
14
31
56
SS
1S3
1,500
NA
NA
NA
NA
14
30
54
84
176
1,600
NA
NA
NA
NA
13
29
52
82
170
1,700
NA
NA
NA
NA
13
28
50
79
164
1,800
NA
NA
NA
NA
13 .
27
49
77
159
1,900
NA
NA
NA
NA
12
26
47
74
155
2,000
NA
NA
NA
NA
12
25
46
72
151
NA means a flow of less than 10 cfli.
Note: All table entries are rounded to ?> significant digits.
"Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside
diameter of the copper tubing products.
198
FUEL PIPING
Table 12-13
Table 12-13 Semi-Rigid Copper Tubing [NFPA Table 6.2(g)]
( )
y
Gas:
Natural
Inlet Pressure:
Le,ss tlian 2 psi
Pressure Drop:
0.5 in. w.c.
Specific Gravity;
0.60
Tube Size (in.)
K&L:
'/4
%
%
44
Vi
1
l'/4
I'/4
2
Nonuni)]:
ACR:
H
'/t
%
»/i
%
I'/s
1%
—
—
Oulside:
0.375
0.500
0.625
0.750
0.875
1.125
1.376
1.625
2.125
Inside;*
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
GapaciLy in
Cubic Feel ol: Gas per Hour
10
27
55
111
195
276
590
1,060
1,680
3,490
20
18
38
77
134
190
406
730
1,150
2,400
30
15
30
61
107
1.52
326
586
925
1,930
40
13 '
26
53
92
131
279
502
791
1,650
BO
11
23
47
82
110
247
445
701
1,460
60
10
21
42
74
105
224
403
635
1,320
70
NA
■ 19
39 ,
BS
96
206
371
585
1,220
80
NA
IS
36
as
90
192
345
544
1,130
90
NA
17
34
59
84
180
324
510
1,060
100
NA
Ifi
32
56
79
170
.306
482
1,000
125
NA
14
28
50
70
161
271
427
890
150
NA
13
26
ih
64
136
24,5
3S7
80S
175
NA
12
24
41
59
125
226
350
742
200
NA
11
22
39
55
117
210
331
690
250
NA
NA
20
34
48
103
186
294
612
SOO
NA
NA
18
31
4.4
94
1S9
266
554
350
NA
NA
16
28
40
80
155
245
510
400
NA
NA
15
26
38
80
144
228
474
450
NA
NA
14
25
35
75
135
214
445
500
NA
NA
13
23
33
71
128
202
420
550
NA
NA
13
22
32
68
122
192
399
fiOO
NA
NA
12
21
30
64
116
183
381
050
NA
NA .
12
20
29
62
111
175
365
700
NA
NA
U
20
28
59
107
168
350
750
NA
NA
11
19
27
57
103
162
338
800
NA
NA
10
18
26
55
99
156
326
850
NA
NA
10
18
25
53
96
151
315
900
NA
NA
NA
17
24
52
93
147
306
950
NA
NA
NA
17 >
24.
50
90
143
297
1,000
NA
NA
NA
16
23
49
88
139
289
, 1,100
NA
NA
NA
15
22
46
84
132
274
1,200
NA
NA
NA
15
21
44
80
126
262
1,300
■NA
NA
NA
H
20
42
76
120
251
1,400
NA
NA
NA
13
19
41
73
116
241
1,500
NA
NA
NA
IS
18
39
71
111
2.32
1,600
NA
NA
NA
13
18
.38
68
108
224
1,700
NA
NA
NA
12
17
37
66
104
217
1,800
NA
NA
NA
J2
17
36
64
101
210
1,900
NA
NA
NA
11
16
35
62
98
204
2,000
NA
NA
NA
11
16
34
60
95
199
NA means aflow of less tJian 10 cfh.
Note: All, table entries are rounded to 3 .significant digits.
'Table ca]5acities are based on "Vf^e. K copper tubing inside diameter (sbown), wbich has the smallest inside
diameter of the copper tubing products.
199
Table 12-14
2007 CALIFORNIA PLUMBING CODE
Table 1 2-14 Semi-Rigid Copper Tubing [NFPA Table 6.2(h)]
Gas: Natural
Inlet Pressure:
Pressure Drop:
Specific Gravity:
Less than 2 psi
l.din. w-c.
^i'! ( TM I ^L* Jutit* Si/iii<^lii>mc<-ii [rtiiisi Inn Id unLinu ,inil lIh- \)i|iliii:iii
Tube Size (in.)
K&L:
Vi
%
'A
%
%
1
1V4
Hi
2
ACR:
%
M
%
%
'/6
VA
1%
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside;
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
39
80
162
283
402
859
1,550
2,440
5,080
20
27
55
111
195
276
590
1,060
1,680
3,490
30
21
44
89
156
222
474
853
1,350
2,800
40
IS
38
77
134
190
406
730
1,150
2,400
50
16
33
68
119
168
359
647
1,020
2,130
60
15
30
61
107
152
326
586
925
1,930
70
13
28
57
99
140
300
539
851
1,770
80
13
26
53
92
131
279
502
791
1,650
90
12
24
49
86
122
262
471
742
1,550
100
11
23
47
82
116
247
446
701
1,460
125
NA
20
41
72
103
219
394
622
1,290
150
NA
18
37
65
93
198
357
563
1,170
175
NA
17
34
60
85
183
329
518
1,080
200
NA
16
32
56
79
170
306
482
1,000
250
NA
14
28
50
70
151
271
427
890
300
NA
13
26
45
64
136
245
387
806
350
NA
12
24
41
59
125
226
356
742
400
NA
11
22
39
55
117
210
331
690
450
NA
10
21
36
51
110
197
311
647
500
NA
NA
20
34
48
103
186
294
612
550
NA
NA
19
32
46
98
177
279
581
600
NA
NA
18
31
44
94
169
266
554
650
NA
NA
17
30
42
90
152
255
531
700
N/V
NA
16
28
40
86
155
245
510
750
NA
NA
16
27
39
83
150
236
491
800
NA
NA
15
26
38
80
144
228
474
850
NA
NA
15
26
36
78
140
220
459
900
NA
NA
14
25
35
75
1.35
214
^15
950
NA
NA
14
24
34
73
132
207
432
1,000
NA
NA
13
23
33
71
128
202
420
1.100
NA
NA
13
22
32
68
122
192
399
1,200
NA
NA
12
21
30
64
116
183
381
1,300
NA
NA
12
20
29
62
111
175
365
1,400
NA
NA
11
20
28
59
107
168
350
1,500
NA
NA
11
19
27
57
103
162
338
1,600
NA
NA
10
18
26
55
99
156
326
1,700
NA
NA
10
18
25
53
96
151
313
1,800
NA
NA
NA
17
24
52
93
147
306
1,900
NA
NA
NA
17
24
50
90
143
297
2,000
NA
NA
NA
16
23
49
88
139
289
NA means a flow of less than 10 cfli.
Note: All table entries are rounded to 3 signiHcant digits.
'Table capacities are based on Type K copper tubing inside diameter (shown) , which has the smallest inside
diameter of the copper tubing products.
200
FUEL PIPING
Table 12-15
Table
12-15 Semi-Rigid Copper Tubing [NFPA Table 6.2 (i)]
Gas;
Natural
Inlet Pressure:
Less tlian 2.0
psi
Pressure Drop:
17.0 in. w.c.
Specific Gravity;
0.60
Tube Size (in.)
K&L:
. 'A
%
'A
%
%
1
V/4
IMi
2
ACR:
%
'A
%
V4
H
V/a
P/b
—
—
Outside;
0.375
0.500
0.625
0.750
0.875
1.126
1.375
1.625
2.125
Inside:
. 0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
LengUi (ft)
Capacity in Guliic Feet of Gas per Hour
10
190
391
796
1,390
1,970
4,220
7,590
12,000
24,900
20
130
269
547
956
1,360
2,900
5,220
8,230
17,100
30
106
216
439
768
1,090
2,330
4,190
6,610
13,800
40
90
18B
376
657
932
1,990
3,590
5,650
11,800
50
79
164
333
582
826
1,770
S,180
5,010
10,400
60
72
148
302
528
749
1,600
2,880
4,540
9,460
70
66
137
278
486
689
1,470
2,6.50
4,180
8,700
80
62
127
258
452
641
1,370
2,460
3,890
8,090
90
58
119
243
424
601
1,2S0
2,310
3,650
7,590
100
56
113
229
400
568
1,210
2,180
3,440
7,170
125
48
100
203
355
503
1,080
1,940
3,050
6,360
ISO
44
90
184
321
456
974
1,7.50
2,770
5.750
175
40
S3
169
296
420
896
1,610
2,540
6,300
200
as
77
157
275
390
834
1,500
2,370
4,930
250
33
69
140
244
346
7.39
1,.330
2,100
4,370
300
30
62
126
221
313
670
1,210
1,900
3,960
350
28
57
116
203
288
616
1,110
1,750
3,640
400
26
53
108
189
268
573
1,030
1,630
3,390
450
24
50
102
177
252
538
968
1,530
3,180
500
23
47
96
168
238
508
914
1,440
3,000
550
22
45
91
159
226
482
868
1,370
2,850
600
21
43
87
152
215
460
829
1,310
2,720
650
20
41
83
145
205
441
793
1,250
2,610
700
19
39
80
14.0
198
423
762
1,200
2,500
750
18
38
77
135
191
408
734
1,150
2,410
800
IS
87
74
130
184
394
709
1,120
2,330
850
17
35
72
126
178
,381
686
1,080
2,250
900
17
34
70
122
173
370
665
1,050
2,180
950
16
33
68
118
168
359
646
1,020
2,120
1,000
16
32
66
lis
163
349
628
991
2,060
1,100
15
31
63
109
155
332
597
941
1,960
1,200
14
29
60
104
148
316
569
898
1,870
1,300
14
28
57
100
142
303
545
850
1,790
1,400
IS
27
55
96
136
291
524
826
1,720
1,500
13
26
53
93
131
280
505
796
1,650
1,600
12
25
51
89
127
271
487
768
1,600
1,700
12
24
49
86
123
262
472
744
1,!J50
1,800
11
24
48
84
119
254
457
721
1,500
1,900
11
23
47
81
115
247
444
700
1,460
2,000
11
22
45
79
112
240
432
681
1,420
Note: All table eiime.s are rounded to 3 significant digits,
''Table capacities are based on l^i^e K co]5per tubing inside diameter (showi) , wbich has the smallest inside
diameter of tlie copper tubing products.
c
201
Table 12-16
2007 CALIFORNIA PLUMBING CODE
Table 12-16 Semi-Rigid Copper Tubing [NTPA Table 6.2(j)]
Gas:
Natural
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity:
0.60
Tube Size (in.)
K&L:
14
%
Vi
%
Vi
1
l'/4
l'/2
2
ACR:
%
H
'A
'A
%
1V6
1%
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in
Cubic Feet of Gas per Hour
10
245
506
1,030
1,800
2,550
5.450
9,820
15,500
32.200
20
169
348
708
1.240
1,760
3,750
6,750
10,600
22,200
30
135
279
568
993
1,410
3,010
5.420
8,550
17,800
40
116
239
486
850
1,210
2,580
4,640
7,310
15,200
50
103
212
431
754
1,070
2,280
4,110
6,480
13,.500
60
93
192
.391
683
969
2,070
3,730
5,870
12,200
70
86
177
359
628
891
1,900
.3,430
5,400
11, .300
ao
80
164
334
584
829
1,770
S,190
5,030
10,500
90
75
154
314
548
778
1,660
2,990
4,720
9.820
100
71
146
296
518
735
1,570
2,830
4,4.50
9,280
125
63
129
263
459
651
1,390
2,500
3,950
8,220
150
57
117
238
416
590
1,260
2,270
3,580
7,450
175
52
108
219
383
543
1,160
2,090
3,290
6,850
200
49
100
204
356
505
1,080
1,940
3,060
6,380
2S0
43
89
181
315
448
956
1,720
2,710
5,650
300
39
80
164
286
406
866
1,560
2,460
5,120
350
36
74
150
263
373
797
1,430
2,260
4.710
400
33
69
140
245
347
741
1,330
2,100
4,380
450
31
65
131
230
326
696
1,2.50
1,970
4,110
500
30
61
124
217
308
657
1,180
1,870
3,880
550
28
58
118
206
292
624
1,120
1,770
3,690
600
27
.55
112
196
279
595
1,070
1,690
3,520
650
26
53
108
188
267
570
1,0.30
1,620
3,370
700
25
51
103
181
256
548
986
1,550
3,240
760
24
49
100
174
247
528
950
1,500
3,120
SOO
23
47
96
168
239
510
917
1,450
3,010
850
22
46
93
163
231
493
888
1.400
2,920
900
22
«
90
158
224
478
861
1,360
2,8.30
950
21
43
88
153
217
464
836
1,320
2,740
1,000
20
42
85
149
211
452
813
1,280
2,670
1,100
19
40
81
142
201
429
772
1,220
2,540
1,200
IS
38
77
135
192
409
7.37
1,160
2,420
1,300
18
36
74
129
183
392
705
1,110
2,320
1,400
17
35
71
124
176
375
678
1,070
2,230
1,500
16
34
68
120
170
363
653
1,030
2,140
1,600
16
33
66
116
164
350
630
994
2,070
1,700
15
31
64
112
159
3.39
610
962
2,000
1,800
15
30
62
108
154
329
592
935
1,940
1,900
14
30
60
105
149
319
575
906
1,890
2.000
14
29
59
102
145
310
5£>9
881
1,830
Note: All table entries are rounded to 3 significant digiB.
"Table capacities are based on Type It copper tubing inside diameter (shown) , which has tlie smallest inside
diameter of die copper tubing products.
202
FUEL PIPING
Table 12-17
Table 12-1'
1 Semi-Rigid Copper Tubing [NFPA Table 6.2(k)]
Gas:
Natural
Inlet Pressure:
2.0 psi
Pressure Drop:
1.5 psi
Specific Graiily:
0.60
SPECIAL USE: Pipe Sizinir Between Point of Delivery and the House Line Retfulator. Total Load Supplied by a
Single House Line Regulator Not Exceeding 150 CubicFeet per Hour.''",
, , ' 1
Tube Size (in.)
K&L:
'A
%
'A
%
%
1
I'A
V/i
2
ACR:
V»
Vi
V»
%
%
I'/d
l-Mi
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.37S
1.625
2.125
Inside:*
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
■ Capacity in Cubic Feet of Gas per Hoiu-
10
303
625
1,270
2,220 .
3,150
6,740
12,100
19,100
39,800
20
208
430
874
1,5,30
2,170
4,630
8,330
13,100
27,400
30
167
345
702
1,230
1,740
3,720
6,690
10,600
22,000
' 40
143
295
601
,1,050
1,490
3,180
5,730
9,030
18,800
TjO
127
262
532
931
1,320
2,820
5,080
8,000
16,700
60
115
237
482
843
1,200
2,560
4,600
7,250
15,100
70
106
218
444
776
1,100
2,350
4,230
6,670
13,900
80
98
203
413
722
1,020
2,190
3,940
6,210
12,900
90
92
190
387
677
961
2,050
3,690
5,820
12,100
100
87
180
366
640
907
1,940
3,4,90
5,500
11,500
125
77
159
324
567
804
1,720
3,090
4,880
10,200
150
70
144
294
514
729
1,560
2,800
4,420
,9,200
175
64
133
270
472
670
1,430
2,580
4,060
8,460
200
60
124
2.52
440
624
1,3.30
2,400
■,3,780
7,870
250
53
110
223
' 390
553
1,180
2,130
3,350
6,980
300
48
99
202
353
501
1,070
1,930
3,040
6,320
350
44
91
186
.325 ,
461
984
1,770
2,790
5,820
400
41
85
173
302
429
916
1,650
2,600
5,410
' 450
39
80
162
283
402
859
1,550
2,440
5,080
500
36
75
153
268
380
811
1,460
2,300
4,800
550
35
72
!(' 254
361
771
1,390
2,190
4,560
BOO
33
68
IV 243
.344
7.35
1,320
2,090
4,350
050
32
65
133
232
330
704
1,270
2,000
4,160
700
30
63
128
223
317
676
1,220
1,920
4,000
750
29
60
123
215
305
652
1,170
1,850
3,850
800
28
58
119
208
295
629
1,130
1,790
3,720
850
27
57
115
201
285
609
1,100
1,730
3,600
900
27
55
111
195
276
590
1,060
1,680
3,490
950
26
53
108
189
268
573
1,030
1,630
3,390
1,000
25
52
105
184
261
5.58
1,000
1,580
3,300
1,100
24
49
100
175
248'
530
954
1,500
3,130
1,200
23
47
95
167
237
505
910
1,430
2,990
1,300
22
45
91
160
227
484
871
1,370
2,860
1,400
21
43
88
1.53
218
465
837
1,320
2,750
1,500
20
42
85
148
2J0
448
806
1,270
2,650
1,600
19
40
82
143
202
432
779
1,230
2,560
1,700
19
39
79
138
19B
419
753
1,190
2,470
1,800
18
38
77
134
•190
406
731
1,150
2,400
1,900
18
37
74
130
184
394
709
1,120
, 2,330
2,000
17
36 72
126 179
383
690
1,090
2,270
Note: All table entries are rounded to 3 significant digits.
"Table capacities are based on Type K copper tubing inside diameter (shown) , which has tlie smallest: inside
diameter of the copper tubing products.
'Wlien this table is used to size the tubing upstream of a line pressure regulator, die pipe or tubing down-
stream of the line pressure regulator shall be sized using a pressure drop no greater than 1 in. w.c.
203
Table 12-18
2007 CALIFORNIA PLUMBING CODE
Table 12-18 Semi-Rigid Copper Tubing [NFPA Table 6.2(1)]
Gas:
Natural
Inlet Pressiu-e:
5.0 psi
Pressure Drop:
3.5 psi
Specific Gravity:
0.60
Tube Size (in.)
Nominal:
K&L:
1/4
%
!^
H
%
1
VA
1V4
2
ACR:
%
•A
H
%
%
I'A
1%
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:*
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
511
1,050
2,140
3,750
5,320
11,400
20,400
32,200
67,100
20
S61
724
1,470
2,580
.3,650
7,800
14,000
22,200
46,100
30
282
582
1,180
2,070
2,930
6,270
11,300
17,800
37,000
40
241
498
1,010
1,770
2,510
5,360
9,660
15,200
31,700
50
214
441
898
1,570
2,230
4,750
8,560
13,500
28,100
60
194
400
813
1,420
2,020
4,310
7,750
12,200
25,500
70
178
368
748
1,310
1,860
3,960
7,1.30
11,200
23,400
80
166
.342
696
1,220
1,730
3,690
6,640
10,500
21,800
90
156
.321
653
1,140
1,620
3,460
6,230
9,820
20,400
100
147
303
617
1,080
1,530
3,270
5,880
9,270
19,300
125
130
269
547
955
1,360
2,900
i),210
8,220
17,100
150
118
243
495
866
1,230
2,620
4,720
7,450
15,500
175
109
224
456
796
1,1,30
2,410
4,350
6,850
14,-300
200
101
208
424
741
1,050
2,250
4,040
5,370
13,300
250
90
185
376
657
932
1,990
3,580
5,650
11,800
300
81
167
340
595
844
1,800
3,250
5,120
10,700
350
75
154:
313
547
777
1,660
2,990
4,710
9,810
400
69
143
291
509
722
1,540
2,780
4,380
9,120
450
65
134
273
478
678
1,450
2,610
4,110
8,560
500
62
127
258
451
640
1,370
2,460
3,880
8,090
550
58
121
245
429
608
1,.300
2,340
3,690
7,680
600
56
115
234
409
580
1,240
2,230
3,520
7,330
650
53
110
224
392
656
1,190
2,140
3,370
7,020
700
51
106
215
376
534
1,140
2,050
3,240
6,740
750
49
102
207
362
514
1,100
1,980
3,120
6,490
800
48
98
200
350
497
1,060
1,910
3,010
6,270
850
46
95
194
339
481
1,030
1,850
2,910
6,070
900
45
92
188
328
466
1,000
1,790
2,820
5,880
950
43
90
182
319
452
967
1,740
2,740
5,710
1,000
42
87
177
310
440
940
1,690
2,670
5,560
1,100
40
83
169
295
418
893
1,610
2,530
5,280
1,200
38
79
161
281
399
852
1,530
2,420
5,040
1,300
37
7S
154
269
382
816
1,470
2,320
4,820
1,400
.35
73
148
259
367
784
1,410
2,220
4,630
1,500
34
70
143
249
353
755
1,360
2,140
4,460
1,600
33
68
138
241
341
729
1,310
2,070
4,310
1,700
32
65
133
233
330
705
1,270
2,000
4,170
1,800
31
63
129
226
320
684
1,2.30
1,940
4,040
1,900
30
62
125
219
311
664
1,200
1,890
3,930
2,000
29
60
122
213
302
646
1,160
1,830
3,820
Note: All table entries are roxuiclecl to 3 significant digits.
"Table capacities are based on Type K copper tubing inside diameter (sliown) , whicli has the smallest inside
diameter of tlie copper tubing products.
204
FUEL PIPING
Table 12-1 9 -Table 12-20
Table 1 2-19 Corrugated Stainless Steel Tubing (CSST) [NFPA Table 6.2(m)]
Gas:
Natural
Inlet Pressure:
Less tlian 2 psi
Pressure Drop:
0.5 in. w.c.
Specific Gravitj*:
0.60
Tube Size (EHD)»
Flow Designation:
13
IB
18
19
23
25
30
31
37
46
48
60
62
Lengtli (ft)
Capacity in Cubic Feet of Gas per Hour
5
46
63
116
134
225
270
471
646
895
1,790
2,070
3,660
4,140
10
32
'H
82
96
161
192
3S0
383
039
1,200
1,470
2,000
2,930
15
25
35
06
77
132
157
207
310
524
1,030
1,200
2,140
2,400
ao
22
31
68
67
116-
137
231
269
456
8S8
1,050
1,850
2,080
25
19
27 '
62
00
104
122
206
240
409
793
936
1,060
1,860
SO
18
25
47
65
96
112
188
218
374
. 723
856
1,.520
1,700 >
40
16
21
41
47
83
97
102
188
326
625
742
1,320
1,470
50
13
19
37
42
76
87
144
168
292
669
665
1,180
1,320
60
12
17
34
38
68
80
131
153
267
509
608
1,080
1,200
70
11
16
31
36
6S
74
121
141
248
471
563
1,000
1,110
80
10
15
29
33
60 ■
69
113
132
232
440
527
940
1,040
90
10
M
28
32
57
06
107
125
219
415
498
887
983
100
9
13
20
30
54
02
101
118
208
393
472
843
933
150
7
10
20
23
42
48
78
91
171
320
387
091
702
200
9
18
21
38 ,
44
71
82
148
277
336
600
661
' 260
5
8
16
19
34
39
03
74
133
247
301
538
691
300
5
7
15
17
32
36
67
67
95
220
275
492
540
*EHD = Equivalent Hydraulic Diameter, which is a measure of tlie relative hydraulic efficiency between
diilerent tubing sizes. Tlie greater the value ofEHD, the greater the gas capacity of the tubing.
Notes:
(1) Table includes losses for four 90 degree bends and two end fittings. Tubing mnswith larger numbers of
bends and/or fitungs shall be increased by an equi\'alent!engthofuibing to the following equation: L=l.'6n,
where L is additional lengdi (ft) of tubing and n is the number of addiuonal fittings and/or bends.
(2) All table entries are rounded to 3 significant digits.
Table 12-20 Corrugated Stainless Steel Tubing (CSST) [NEPA Table 6.2(n)]
Gas;
Natural
Inlet Pressure:
Less than 2 psi
Pressure Drop:
3.0 in. w.c.
Specific Gravity;
0.60
Tube Size (EHD)*
Flow Designation;
13
15
18
19
23
25
30
31
37
46
48
60
62
Length (ft)
Cat
acity in Cubic Feet of C
.as per Ho
iir
5
120
160
277
327
529
649
1,180
1,370
2,140
4,430
5,010
8,800
10,100
10
83
112
197
231
380
462
828
• 958
1,530
3,200
3,560
6,270
7,160
15
67
90
161
189
313
379
673
778
1,250
2,540
2,910
5,140
5,850
20
57
78
140
164
273
329
580
672
1,090
2,200
2,530
4,460
5,070
25
51
69
125
147
245
295
618
599
978
1,960
2,270
4,000
4,540
30
46
63
115
134
225
270
471
546
895
1,790
2,070
3,660
4,140
40
39
54
100
116
196
234
407
471
778
1,550
1,800
3,180
3,590
50
,3S
48
89
104
176
210
363
421
698
1,380
1,610
2,850
3,210
BO
32
44
82
95
161
192
330
383
639
1,260
1,470
2,600
2,930
70
29
41
76
88
150
178
306
355
593
1,170
1,360
2,420
2,720
80
27
38
71
82
141
167
285
331
555
1,090
1,280
2,260
2,540
90
2(i
36
67
77
LS3
157
268
311
524
1,030
1,200
2,140
2,400
100
24
34
63
73
126
149
254
295
498
974
1,140
2,030
2,280
ISO
19
27
52
60
104
122
206
240
409
793
936
1,660
1,860
200
17
23
45
52
91
106
178
207
355
686
812
1,440
1,610
250
15
21
40
46
82
95
159
184
319
613
728
1,290
1,440
.SOO
13
19
37
42
75
87
144
168
234
!559
665
1,180
1,320
*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between
different tubing sizes. Tlie greater the vjilue of EHD, the greater the gas capacity of tlie tubing.
Notes:
(1) Table includes losses for four 90 degree bends and two end fittings. Tubing runs with larger numbers of
bends and/or fittings shall be increa-sed by an equiviilent length of tubing to the following eqtiation: L = 1.3«,
where L is additional lengdi (ft) of tubing and n is the number of additional fitdngs and/or bends.
(2) All table enhies are rounded to 3 significant digits.
205
Table 12-21 -Table 12-22
2007 CALIFORNIA PLUMBING CODE
Table 12-21 Corrugated Stainless steel Tubing (CSST) [NFPA Table 6.2(o)]
Gas:
Natural
Inlet Pressm-e:
Less than 2 psi
Pressure Drop:
6,0 in, w.
:.
Specific Gravity:
0.60
Tube Size (EHD)«
Flow Designation:
13
15
18
10
23
25 I 30 1 31
3,
46 1 48
60
62
Lengtl. (ft)
Capacity in Cubic Feet of Gas per Hour
5
173
229
389
461
737
911
1,690
1.9.50
3,000
6,280
7,050
12,400
14.260
10
120
100
277
327
529
649
1,180
1,370
2,140
4,4.30
3,010
8,800
10,100
15
96
130
227
207
436
532
960
1.110
1,760
3,610
4,100
7,210
8,260
20
83
112
197
231
380
462
828
9.58
1,530
3,120
.3,660
6,270
7,160
25
74
99
176
207
342
414
739
855
1..370
2,790
3,190
5,020
6,400
30
1)7
90
161
189
313
379
673
778
1,250
2,540
2,910
5,140
5,850
40
57
78
140
164
273
329
580
672
1,090
2,200
2,530
4,460
5,070
50
51
69
125
147
245
295
518
.599
978
1,960
2,270
4,000
4,540
ISO •
46
63
115
134
225
270
471
546
895
1,790
2,070
3,660
4,140
70
42
58
100
124
209
250
435
505
830
1,600
1,920
3,390
3,840
SO
39
54
100
116
196
234
407
471
778
1,5.50
1,800
.3,180
3,.590
90
37
51
94
109
185
221
383
444
735
1,460
1,700
3,000
3,390
100
35
48
89
104
176
210
383
421
69S
1,380
1,610
2,850
3,210
150
28
89
73
85
145
172
294
342
573
1,130
1,320
2,340
2,630
200
24
84
63
73
126
149
254
295
498
974
1,140
2,030
2,280
250
21
30
57
66
114
134
220
263
447
870
1,020
1,820
2.040
300
19
27
52
60
104
122
206
240
409
793
936
1,660
1,860
*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between
diflerent tubing sizes. The greater the value ofEHD, the greater the gascapacit\'ofthe tubing.
Notes:
(1) Table includes losses for four 90-degree bends and two end litdngs. Tubing runs wth larger numbers of
bends and/or iitttngs shall be increased by an equi\'alent length of tubing to the following equadon: L=l.3n,
where L is additional length (ft) of tubing and n is die number of additional fittings and/or bends.
(2) A\\ table entries are roxuided to 3 significant digits.
Table 12-22 Corrugated Stainless Steel
Tubing (CSST)
[NFPA Table 6.2(p)]
Gas:
Natural
Inlet Pressure:
2.0 psi
Presstn-e Drop:
1.0 psi
Specific Gravity:
0.60
Tube Size (EHD)«
Flow Designation:
13
IS
18
19
23
25
30
31
37
46
48
60
62
Length (ft)
Ca
aacity in Cubic Feet of Gas per H<
>ur
10
270
363
687
700
1,100
1,370
2,690
2,990
4,610
9,600
10,700
18,600
21,600
2.5
166
220
374
444
709
876
1,620
1,870
2,890
6,040
6,780
11,900
13,700
30
151
200
342
405
650
801
1,480
1,700
2,640
6,510
6,200
10,900
12,500
40
129
172
297
XI
5(57
696
1,270
1,470
2,Si00
4,760
5,380
9,440
10,900
50
115
154
266
314
510
624
1,140
1,310
2,060
4,260
4,820
8,470
9,720
7.5
93
124
218
2.57
420
612
922
1,070
1,690
3,470
3,950
6,940
7,940
80
89
120
211
249
407
496
892
1,030
1,640
3,360
3,820
6,730
7,690
100
79
107
189
222
366
445
795
920
1,470
3,000
3,420
6,030
6,880
150
64
87
155
182
302
364
646
748
1,210
2,440
2,800
4,940
5,620
200
55
75
135
157
263
317
5.57
643
1,050
2,110
2,430
4,290
4,870
250
49
67
121
141
236
284
497
.576
941
1,890
2,180
3,850
4,360
300
44
61
110
129
217
260
433
325
862
1,720
1,990
3,520
3,980
400
38
52
96
111
189
225
390
453
749
1,490
1,730
3,060
3,450
500
34
46
86
100
170
202
348
404
552
1,330
1,550
2,740
3,090
*EHD = Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efliciency between
diflferent tubing sizes. The gi-eater the value of EHD, the greater the gas capacity of the tubitig.
Notes:
(1) Table does not include effect of pressure drop acro.ss the line regulator. Wliere regulator loss exceeds
"A psi, do not usethis table. Consult with regulator manufacturer for pressure drops and capacity factors.
Pressure drops across a regulator may vary with flow rate.
(2) CIMJTION: Capacities shown in table may exceed maximum capacity for a .selected regulator. Consult
witli regulator or tubing manufacturer for guidance.
(3) Table includes losses for four 90-degree bends and two end fittings. Tubing runs mth larger number of
Ijends and/or fittings shall be increased by an equivalent length of tubing according to the following equa-
don: L= 1.3n, where Lis addidonal length (ft) of tubing and nis the number of addidonalfitdngs and/ or
bends.
(4) All tiible enhies are rounded to 3 significant digits.
206
FUEL PIPING
Table 12-23 -Table 12-24
Table 12-23 Corrugated Stainless
Steel
Tubing (CSST)
[NFPA Table 6.2(q)]
Gas:
Natural
Inlet Pressure:
6.0 psi
Pressure Drop:
3.5 psi
Specific Gravity:
0.60
Tube Size (EHD)«
Flow Designation:
13
IS
18
19
23
25
30
31
37
46
48
60
62
Length (ft)
Capacity in Cubic Feet of Gas per Hour
JO
523
074
1,080
1,300
2,000
2,!>S0
4,920
5,660
8,300
18,100
19.800
34,400
40.400
25
322
420
691
827
1,290
1,620
3,080
3,540
6,310
11,400
12,600
22,000
25,600
30
292
382
632
755
1,180
1,480
2,800
3,230
4,860
10,400
11,500
20.100
23,400
'10
251
S29
649
654
1,030
1,280
2,420
2,790
4,230
8,970
10.000
17,400
20,200
50
223
293
492
586
926
1,150
2,160
2,490
3,790
8,020
8.930
15,600
18,100
V5
ISO
238
403
479
763
944
1,750
2,020
3,110
6,530
7,320
12,800
14,800
80
174
280
391
463
740
916
1,690
1,960
3,020
6,320
7,090
12.400
14.300
100
154
205
350
415
665
820
1,510
1,740
2.710
6,650
6,350
11,100
12.800
150
124
166
287
339
548
672
1,230
1,420
2,220
4.60O
5,200
9,130
10.500
200
107
143
249
294
478
584
1,060
1,220
1,930
3,980
4,610
7,930
9.090
250
95
128
223
263
430
624
945
1,090
1,730
3,650
4,040
7,110
8,140
300
86
116
204
240
394
479
800
995
1,590
3,240
3,090
6.600
7,430
400
74
1(10
177
208
343
416
742
853
1,380
2,800
3,210
5.650
6,440
300
GO
89
159
186
309
373,
.662
706
1.040
2,500
2,870
6.060
5,760
*EHD = .EqmviUent Hydraulic Diameter, which is a measure of the rekdve hydraulic efficiency between
diflerent tubing sizes. The greater tlie value of EHD, the greater the gas capacitj' of die tubing.
Notes:
(1) Table does not include effect of pressiue drop across line regulator. "Wliere regulator loss exceeds 1 psi,
do not use this table. Consult wJdi regulator manufacturer for pressure drops and capacity factors. Pressure
drop acro.ss regulator may vary iwdi the ilow rate.
, (2) CAUTION: Capacities shown in table may exceed maximum capacity of selected regulator. Consult wth
tubing manufacturer for guidance.
(3) Table includes losses for four 90<legree bends and t\v'0 end fittings. Tubing runs with larger numbers of
bends and/or fittings shall be increased by an equivalent length of tubing to the following equation; L= I .St?,
where L is additional length (ft) of tubing and n is the number of additional fittings and/or bends.
(4) All table endies are rounded to 3 significant digits.
Table 12-24 Polyethylene Plastic Pipe [NFPA Table 6.2(r)]
Gas:
Natural
Inlet Pressure:
Less tlian 2 psi
Pressure Drop:
0.3 hi. w.c.
Specific Gravity:
0.60
Pipe Size (in.)
Nominal OD:
'/j
Vi
1
VA
IMi
2
Designation:
SDR 9.33
SDR 11.0
SDR 11.00
SDR 10.00
SDR 11.00
SDR 11.00
Actual ID:
0.660
0.860
1.077
1.328
1.564
1.943
Lengtii (ft) •,
Capacity in Cubic Feet of Gas per Hour
10
153
305
551
966
1.440
2,590
20
105
210
379
656
991
1.780
30
84
169
304
527
796
1.430
40
72
144
260
451
681
1.220
50
64
128
231
400
604
1,080
60
58
116
209
. 3(i2
547
983
70
53
107
192
333
503
904
80
50
99
179
810
468
841
90
46
93
168
291
439
789
100
44
88
159
275
415
746
125
39
78
141
243
368
661
150
36
71
127
221
333
698
175
32
65
117
203
306
551
200
30
60
109
189
286
512
250
27
54
97
167
253
454
300
24
48
88
152
229
411
360
22
45
81
139
211
378
400
21
42
76
130
196
352
450
19
39
70
122
184
330
500
IS
S7
66
115
174
312
Note: All table entries are rounded to B .significant digits.
207
Table 12-25
2007 CALIFORNIA PLUMBING CODE
Table 12-25 Polyethylene Plastic Pipe [NIPA Table 6.2(s)]
Gas:
Natural
Inlet Pressure:
Less tlian 2 psi
Pressure Drop:
0.5 in. w.c.
Spedric Gravity:
0.60
Pipe Size (in.)
Nominal OD:
■/i
Vi
1
I'/4
Wi
2
Designation:
SDR 9.33
SDR 11.0
SDR 11.00
SDR 10.00
SDR 11.00
SDR 11.00
Actual ID:
0.660
0.860
1.077
1.328
1.554
1.943
Lengtli (ft)
Capacity in Cubic Feet of Gas per Hour
10
201
403
726
1,260
1,900
3,410
20
138
277
499
865
1,310
2,350
30
HI
222
401
695
1,050
1,880
40
95
190
343
.594
898
1,610
50
84
169
304
.527
796
1,430
60
76
153
276
477
721
1,800
70
70
140
254
439
663
1,190
80
65
131
236
409
617
1,110
90
61
123
221
383
579
1,040
100
58
116
209
362
547
983
125
51
103
185
321
485
871
150
46
93
168
291
439
789
175
43
86
154
268
404
726
200
40
80
144
249
376
675
250
35
71
127
221
333
598
300
32
64
115
200
302
542
350
29
59
106
184
278
499
400
27
t,h
99
171
258
464
450
26
51
93
160
242
435
500
24
48
88
152
229
411
Note: All table entries are rounded to 3 significiint digits.
208
FUEL PIPING
Table 12-26
Table 12-26 Polyethylene Plastic Pipe [NEPA Table 6.2(t)]
Gas:
Natural
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity:
0.60
Pipe Size (in.)
Nominal OD:
Vi
Vi
I
I'/i
VA
2
Designation:
SDR 9.33
SDR 11.0
SDR 11.00
SDR 10.00
SDR 1 1.00
SDR 11.00
Actual ID:
U.660
0.860
1.077
1.328
1.554
1.943
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
1,860
3,720
6,710
11,600
17,600
31,600
20
1,280
2,560
4,610
7.990
12,100
21,700
30
1,030
2,050
.3,710
6,420
9,690
17,400
40
, 878
1,760
3,170
5,490
8,300
14,900
50
778
1,560 ■
2,810
4,870
7,350
13,200
60
705
1,410
2.550
4,410
6,660
12,000
70
649
1,300
2,340
4,060
6,130
11,000
80
603
1,210
2,180
3,780
5,700
10,200
90
566
1.130
2,050
3,540
5,350
9,610
100
535
1,070
1,930
3,350
5,050
9,080
125
474
949
1,710
2,970
4,480
8,050
150
429
860
1,550
2,690
4.060
7,290
175
395
791
1,430
2,470
3,730
6,710
200
368
736
1,330
2,300
.3,470
6,240
250
326
652
1,180
2,040
3,080
5,5.30 ,
300
295
591
1,070
1,850
2,790
5.010
350
272
544
981
1,700
2,570
4.610
'100
253
506
913
1,580
2,390
4.290
450
237
475
856
1,480
2,240
4,020
500
224
448
809
1,400
2,120
3,800
550
213
426
768
1,330
2,010
3,610
600
203
406
733
1,270
1.920
3,440
650
194
389
702
1,220
1.840
3,300
700
187
374
674
1,170
1,760
3,170
750
180
360
649
1,130
1,700
3,050
800
174
348
627
1,090
1,640
2.950
850
168
336
607
1,050
1,590
2,850
900
163
326
588
1,020
1,540
2,770
950
158
317
572
990
1.500
2,690
1,000
154
308
556
963
1.450
2,610
1,100
146
293
528
915
l.,380
2,480
1,200
139
279
504
873
1.320
2,370
1,300
134
267
482
836
1,260
2,270
1,'I00
128
257
463
803
1,210
2,180
1,500
124
247
446
773
1,170
2,100
l.fiOO
119
239
431
747
1,130
2,030
1,700
115
231
417
723
1,090
1,960
1,800
112
224
404
701
1,060
1,900
1,900
109
218
393
680
1,030
1,8.50
2,000
106
212
382
662
1,000
1.800
Note: All table entries are rounded to 3 significant digits.
209
Table 12-27 -Table 12-28
2007 CALIFORNIA PLUMBING CODE
Table 12-27 Polyethylene Plastic Tubing
[NFPA Table 6.2 (u)]
Gas:
Natural
Inlet Pressure:
Less than 2.0 psi
Pressure Drop:
0.3 in. w.c.
Specific Gravity:
0.60
Plastic Tubing Size (CTS)* (in.)
Nominal OD:
1/2
%
Designation:
SDR 7.00
SDR 11.00
Actual ED:
0.445
0.927
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
54
372
20
37
256
30
30
205
40
26
176
50
23
156
60
21
141
70
19
130
80
18
121
90
17
113
100
16
107
125
14
95
150
13
86
175
12
79
200
11
74
225
10
69
250
NA
65
275
NA
62
300
NA
59
350
NA
54
400
NA
51
450
NA
47
500
NA
45
Table 12-28 Polyethylene Plastic Tubing
[NFPA Table 6.2(y)]
Gas:
Natural
Inlet Pressure:
Less than 2.0 psi
Pressure Drop:
0.5 in. w.c.
Specific Gravity:
0.60
Plastic Tubing Size (CTS)* (in.)
Nominal OD:
Vi
%
Designation:
SDR 7.00
SDR 11.00
ActuallD:
0.445
0.927
Length (ft)
Capacity in Cubic Feet of Gas per Hour
10
72
490
20
49
337
30
39
271
40
34
232
50
30
205
60
27
186
70
25
171
80
23
1.59
90
22
149
100
21
141
125
18
125
150
17
113
175
15
104
200
14
97
225
13
91
250
12
86
275
11
82
300
11
78
350
10
72
400
NA
67
450
NA
63
500
NA
59
*CTS = Copper tube size.
NA means a flow of less than 10 cfli.
Note: All table entries are rounded to 3 significant digits.
*CTS = Copper tube size.
NA means a flow of less than 10 cfli.
Note: All table entries are rounded to .? significant digits.
210
FUEL PIPING
Table 12-29
Table 1 2-29 Schedule 40 Metallic Pipe [NFPA Table 6.3(a)]
Gas:
Inlet Pressure:
Pressure Drop:
Specific Gravity:
UticIiUited Propane
10.0 psi
1.0 psi
SPECLAL USE: Pipe Sizing Between Firat Stage (High Pressure Regiilntor) and Second Stage (Low Pressure Regulator)
Pipe Size (in.)
Nominal
Inside:
Vx
»/.
1
I'/i
I'/j
2
2Vi
3
4
Actual:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Lengtli (ft)
Capaclt)' ill Tliousands of Btu per Hour
10
3,320
6,950
13,100
26,900
40,300
77,600
124,000
219,000
446,000
20
2,280
4,780
9,000
18,500
27,700
53,300
85,000
150,000
306,000
30
1,830
3,840
7,220
14,800
22,200
42,800
68,200
121,000
246,000
■10
1,570
3,280
6,180
12,700
19,000
36,600
58,400
103,000
211,000
50
1,390
2,910
5,480
11, .300
16,900
32,500
51,700
91, .500
187,000
60
1,260
2,640
4,970
10,200
1.5,300
29,400
46,900
82,900
169,000
70
1,160
2,430
4,570
9,380
1-1,100
27,100
43,100
76,300
156,000
SO
1,080
2,260
4,260
8,730
1.3,100
25,200
40,100
70,900
146,000
90
1,010
2,120
3,990
8,190
12,300
23,600
37,700
66,600
136,000
100
936
2,000
3,770
7,730
11,600
22,.300
35,600
62,900
128,000
125
848
1,770
3,340
6,850
10,300
19,800
31,500
55,700
114,000
150
708
1,610
3,020
6,210
9,300
17,900
28,600
50,600
103,000
175
706
1,480
2,780
.5,710
8,560
16,500
26,300
46,-500
94,700
200
657
1,370
2,590
5,320
7,960
15,300
24,400
43,200
88,100
250
582
1,220
2,290
4,710
7,060
13,000
21,700
38,300
78,100
300
528
1,100
2,080
4,270
6,400
12,300
19,600
34,700
70,800
350
486
1,020
1,910
.3,930
5,880
11,.300
18,100
31,900
66,100
400
452
945
1,780
.3,650
5,470
10,500
16,800
29,700
60,600
450
424
886
1,670
3,430
5,140
9,890
15,800
27,900
56,800
500
400
837
1,580
3,240
4,850
9,340
14,900
26,300
53,700
550
380
795
1,500
3,070
4,610
8,870
14,100
25,000
51,000
600
363
7!)9
1,430
2,930
4,400
8,4.60
13,600
23,900
48,600
660
347
726
1,370
2,810
4,210
8,110
12,900
22,800
46,600
700
334
698
1,310
2,700
4,040
7,790
12,400
21,900
44,800
750
321
672
1,270
2,600
3,900
7,500
12,000
21,100
43,100
800
310
649
1,220
2,510
3,760
7,240
11, .500
20,400
41,600
850
aoo
628
1,180
2,430
3,640
7,010
11,200
19,800
40,300
900
291
609
1,150
2,360
3,530
6,800
10.800
19,200
39,100
950
283
592
1,110
2,290
3,430
6,600
10,600
18,600
37,900
1,000
275
575
1,080
2,230
3,330
6,420
10,200
18,100
36,900
1,100
261
.546
1,030
2,110
3,170
6,100
9,720
17,200
35,000
1,200
249
521
982
2,020
3,020
5,820
9,270
16,400
33,400
1,300
239
499
940
1,930
2,890
5,570
8,880
1.5,700
32,000
1,400
229
480
903
1,8.50
2,780
5,350
8,530
15,100
30,800
1,500
221
462
870
1,790
2,680
6,160
8,220
14,500
29,600
1,600
213
446
840
1,730
2,590
4,980
7,940
14,000
28,600
1,700
206
432
813
1,670
2,500
4,820
7,680
13,600
27,700
1,800
200
419
789
1,620
2,430
4,670
7,460
13,200
26,900
1,900
194
407
766
1,570
2,360
4,540
7,230
12,800
26,100
2,000
189
395
745
1,630
2,290
4,410
7,030
12,400
25,400
Note: All table entries are rounded to 3 significant digits.
211
Table 12-30
2007 CALIFORNIA PLUMBING CODE
Table 12-30 Schedule 40 Metallic Pipe [NFPA Table 6.3(b)]
Gas:
Undiluted Propane
Inlet Pressure;
10.0 psi
Pressure Drop:
3.0 psi
Specific Gravity:
1.50
SPECIAL USE: Pipe Sizing Betiveen First Stage (High Pressure Regulator) aiid Second Stage (Low Pressure Regulator)
Pipe Size (in.)
Nominal
Inside:
V4
%
1
VA
V/z
2
2'/4
3
4
Actual:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in
Thousands of Btu per Hour
10
5,890
12,300
23,200
47,600
71,300
137,000
219,000
387,000
789,000
20
4,050
8,460
15,900
32,700
49,000
94,400
150,000
266,000
543,000
30
3,250
6,790
12,800
26,300
39,400
75,800
121,000
214,000
436,000
40
2,780
5,810
11,000
22,500
33,700
64,900
103,000
183,000
373,000
.1)0
2.460
5,1,50
9,710
19,900
29,900
57,500
91,600
162,000
330,000
60
2,230
4,670
8,790,
18,100
27,100
52,100
83,000
147,000
299,000
70
2,050
4,300
8,090
16,600
24,900
47,900
76,400
135,000
275,000
80
1,910
4,000
7,530
15,500
23,200
44,600
71,100
126,000
256,000
90
1,790
3,750
7,060
14,500
21,700
41,800
66,700
118,000
240,000
100
1,690
3,540
6,670
13,700
20,500
.S9,500
63,000
111,000
227,000
125
1,500
3,140
6,910
12,100
18,200
35,000
,55,800
98,700
201,000
150
1,360
2,840
5,360
11,000
16,500
31,700
50,600
89,400
182,000
175
1,250
2,620
4,930
10,100
15,200
29,200
46,500
82,300
167,800
200
1,160
2,430 ■
4,580
9,410
14,100
27,200
43,300
76,500
1!J6,100
250
1,030
2,160
4,060
8,340
12,500
24,100
38,400
67,800
138,400
300
935
1,950
3,680
7,560
11,300
21,800
34,800
61,500
125,400
350
860
1,800
3,390
6,950
10,400
20,100
32,000
56,500
H5,.300
400
800
1,670
3,1.50
6,470
9,690
18,700
29,800
52,600
107,300
450
751
1,570
2,960
6,070
9,090
17,500
27,900
49,400
100,700
500
709
1,480
2,790
5,730
8,590
16,500
26,400
46,600
95,100
550
673
1,410 '
2,650
5,450
8,160
15,700
25,000
44,300
90,300
600
642
1,340 .
2,530
5,200
7,780
1.5,000
23,900
42,200
86,200
650
615
1,290
2,420
4,980
7,450
14,400
22,900
40,500
82,500
700
591
1,240
2,330
4,780
7,160
13,800
22,000
38,900
79,300
750
569
1,190
2,240
4,600
6,900
13,300
21,200
37,400
76,400
800
550
1,150
2,170
4,450
6,660
12,800
20,500
36,200
73,700
850
.532
1,110
2,100
4,300
6,450
12,400
19,800
35,000
71,400
900
516
1,080
2,030
4,170
6,250
12,000
19,200
33,900
69,200
950
501
1,050
1,970
4,050
6,070
11,700
18,600
32,900
67,200
1,000
487
1,020
1,920
3,940
5,900
11,400
18,100
32,000
65,400
1,100
463
968
1,820
3,740
5,610
10,800
17,200
30,400
62,100
1,200
442
923
1,740
3,570
5,350
10,300
16,400
29,000
59,200
1,300
423
884
1,670
3,420
5,120
9,870
15,700
27,800
56,700
1,400
406
849
1,600
3,280
4,920
9,480
1.5,100
26,700
54,500
1,500
.391
818
1,540
3,160
4,740
9,130
14,600
25,700
52,500
1,600
.378
790
1,490
3,060
4,580
8,820
14,100
24,800
50,700
1,700
366
765
1,440
2,960
4,430
8,530
13,600
24,000
49,000
1,800
355
741
1,400
2,870
4,300
8,270
13,200
23,300
47,600
1,900
344
720
1,360
2,780
4,170
8,040
12,800
22,600
46,200
2,000
335
700
1,320
2,710
4,060
7,820
12,500
22,000
44,900
Note: All table entries are rounded to 3 .significant digits.
212
FUEL PIPING
Table 12-31
Table 12-31 Schedule 40 Metallic Pipe [NFPA Table 6.3(c)]
Gas;
Undiluted Propane
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity:
1.50
Pipe Size (in.)
Nominiil:
¥i
¥,
1
VA
\'A
2
2'/j
3
4
Actual ID:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
LengUi (ft)
Capacity in Tliousands of Btu per Hour
10
2,680
5,590
10,500
21,600
32,400
62,400
99,500
176,000
359,000
20
1,840
3,850
7,240
14,900
22,300
42,900
68,400
121,000
247,000
30
1,480
3,090
J),820
11,900
17,900
34,500
.54,900
97,100
198,000
40
1,260 .
2,640 .
4,980
10,200
15,300
29,500
47,000
83,100
170,000
50
1,120
2,340
4,410
9,060
13,600
26,100
41,700
73,700
150,000
60
1,010
2,120
4,000
8,210
12,300
23,700
37,700
66,700
136,000
70
934
1,950.
3,680
7,550
11, .300
21,800
,34,700
61,400
125,000
SO
869^
1,820
3,420
7,020
10,500
20,300
32,300
.57,100
116,000
90
815
1,700
3,210
.6,590
9,880
19,000
30,300
53,600
109,000
100
770
1,610
3,030
,6,230
9,330
18,000
28,600
50,600
103,000
125
682
1,4.30
2,690
5,520
8,270
15,900
25.400
44,900
91,500
150
618
1,290
2,440
5,000
7,490
14,400
23,000
40,700
82,900
175
569
1,190
2,240
4,600
6,890
13,300
21,200
37,400
76,300
200
529
1,110
2,080
4,280
6,410
12,300
19,700
34,800
71,000
250
. 469,
981
1,850
3,790
5,680
10,900
17,400
30,800
62,900
300
425
889
1,670
3,440
5,1.50
9,920
15,800
27,900
57,000
350
391
817
1,540
3,160
4,740
9,120
14,500
25,700
52,400
400
364
760
1,430
2,940
4,410
8,490
13,600
23,900
48,800
450
341
714
1,340
2,760
4,130
7,960
12,700
22,400
45,800
500
322
674
1,270
2,610
3,910
7,520
12,000
21,200
43,200
S50
306
640
1,210
2,480
3,710
7,140
11,400
20,100
41,100
600
292
611
1,150
2,360
3,540
6,820
, 10,900
19,200
39,200
650
280
585
1,100
2,260
3,390
6,530
10,400
18,400
37,500
700
269
562
1,060
2,170
3,260
6,270
9,990
17,700
36,000
750
258
541
1,020
2,090
3,140
6,040
9,630
17,000
34,700
800
250
523
985
2,020
3,030
5,830
9,300
16,400
33,500
850
242
.506
953
1,960
2,930
5,640
9,000
15,900
32,400
900
235.
490
924
1,900
2,840
5,470
8,720
15,400
31,500
950
228
476
897
1,840
2,760
5,310
8,470
15,000
30,500
1,000
222
463
873
1,790
2,680
5,170
8,240
14,600
29,700
i.ioo
210
44;0
829
1,700
2,550
4,910
7,830
13,800
28,200
1,200
201
420
791
1,620
2,430
4,680
7,470
13,200
26,900
1,300
192
402
757
1,550
2,330
4,490
7,150
12,600
25,800
1,400
185
386
727
1,490
2,240
4,310
6,870
12,100
24,800
1,500
. 178
372
701
1,440
2,160
4,150
6,620
1 1,700
23,900
1,600
J 72
359
677
1,.390
2,080
4,010
6,.390
, 11,300
23,000
1,700
166
348
655
1,340
2,010
3,880
6,180
10,900
22,300
1,800
161
337
635
1,300
1,950
3,760
6,000
10,600
21,600
1,900
157
327
617
1,270
1,900
3,650
5,820
10,300
21,000
2,000
152
318
600
1,230
1,840
3,550
5,660
10,000
20,400
Note; All table entries are rounded to 3 significant digits.
213
Table 12-32
2007 CALIFORNIA PLUMBING CODE
Table 12-32 Schedule 40 Metallic Pipe [NFPA Table 6,3(d)]
Gas:
Undiluted Propane
Inlet Pressure:
ll.Oin. w.c.
Pressure Drop:
0*5 in. w.c.
SpeciHc Gravity:
1.50
SPECIAL USE: Pipe Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance
Pipe Size (in.)
Nominal
Inside:
W
%
1
VA
1V4
2
2'A
3
4
Actual:
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in
Thousands of Btu per Hour
10
291
608
1,150
2,350
3,520
6,790
10,800
19.100
39,000
20
200
418
787
1,620
2,420
4,660
7,430
13,100
26,800
30
160
336
632
1,300
1,940
3,750
5,970
10,600
21,500
40
137
287
541
1,110
1,660
3,210
5,110
9,030
18,400
50
122
255
480
985
1,480
2,840
4,530
8,000
16,300
60
110
231
434
892
1,340
2,570
4,100
7,250
14,800
80
101
212
400
821
1,230
2,370
3,770
6.670
13,600
100
94
197
372
763
1,140
2,200
3,510
6,210
12,700
125
89
185
349
716
1,070
2,070
3,290
5,820
11,900
150
84
175
330
677
1,010
1,950
3,110
3,600
11,200
175
74
155
292
600
899
1,730
2,760
4,880
9,950
200
67
140
265
543
814
1,570
2,500
4,420
9,010
250
62
129
243
500
749
1,440
2,300
4,060
8,290
300
58
120
227
465
697
1,340
2.140
3,780
7,710
350
51
107
201
412
618
1,190
1,900
3,350
6,840
400
46
97
182
373
560
1,080
1,720
3.040
6,190
450
42
89
167
344
515
991
1,580
2.790
5,700
500
40
83
156
320
479
922
1,470
2,600
5,300
550
37
78
146
300
449
865
1,.380
2,440
4,970
600
35
73
138
283
424
817
1,300
2,300
4,700
650
33
70
131
269
403
776
1.240
2,190
4,460
700
32
66
125
257
385
741
1,180
2,090
4,260
750
30
64
120
246
368
709
1,130
2.000
4,080
800
29
61
115
236
354
681
1,090
1.920
3.920
850
28
59
111
227
341
656
1,050
1.850
3.770
900
27
57
107
220
329
634
1,010
1,790
3,640
950
26
55
104
213
319
613
978
1,730
3,530
1,000
25
53
100
206
309
595
948
1,680
3,420
1,100
25
52
97
200
300
578
921
1,630
3,320
1,200
24
50
95
195
292
562
895
1.580
3,230
1,300
23
48
90
185
277
534
850
1,500
3,070
1.400
22
46
86
176
264
509
811
1,430
2,930
1,500
21
44
82
169
253
487
777
1,370
2,800
1,600
20
42
79
162
243
468
746
1,320
2,690
1,700
19
40
76
156
234
451
719
1,270
2,590
1,800
19
39
74
151
226
436
694
1,230
2,500
1,900
18
38
71
146
219
422
672
1.190
2,420
2,000
18
37
69
142
212
409
652
1,150
2,350
Note: Al] table entries are rounded to 3 significant digits.
214
FUEL PIPING
Table 12-33
Table 12-33 Semi-Rigid Copper Tubing [NFPA Table 6.3(e)]
Gas:
Inlet Pressure:
Pressure Drop;
Specific Gravity:
Undiluted Propane
10.0 psi
1.0 psi
.SIM c:r\I, L'SI-: Tnlir .Si/iiij; Bel\n i;n I-ii-si Sl.i;;*' illi^Ii Pifssurc [(i-l;uI.i((ii ) and *» nd .Sl.im" (LdW l*i<.-..suii' Rri
1.50
ul.lL'il I
Tube Size (in.)
Note: All table entries are rounded to 3 significant digits.
"Table capacities are based on Type K copper tubing inside diameter (shown) , whicli has the smallest inside
diameter of the copper tubing products.
K&L;
'A
%
'A
•/»
%
1
I"/.
I'/Sc
2
ACR:
%
¥i
%
»/i
%
IVs
1»/S
—
—
Outside:
0.375
■ 0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:"
0.30S
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Lengtli (ft)
Capacity in Thousands of Btu per Hour
10
513
1,060
2,1.50
3,760
5,330
11,400
20,500
32,300
67,400
20
352,
727
1,480
2,580
3,670
7,830
14,100
22,200
46,300
30
283
584
1,190
2,080
2,940 .
. 6,290
11..300
17,900
37,200
40
' 242
500
1,020
1,780
2,520
5,380
9,690
15,300
31,800
50
215 •
443
901
1,570
2,230
4,770
8,590
13,500
28,200
60
194
401
816
1,430
2,020
4,320
7,780
12,300
25,600
70
179
369
751
1,310 .
1,860
3,980
7,160
11,300
23,500
SO
166
343
699
1,220
1,730
3,700
6,660
10,500
21,900
90
156
322
655
1,150
1,630
3,470
6,250
9,850
20,500
100
147
304
619
1,080
1,540
3,280
5,300
9,310
19,400
125
131
270
549
959
1,360
2,910
5,230
8,250
17,200
150
118
244
497
869
1,2.30
2,630
4,740
7,470
1.5,600
175
109
225
457
799
1,1.30
2,420
4,380
6,880 .
:14,SQ0
200
101
209
426 .
744
1,060
2,250
4,060
6,400
13,300
250
90
185
377
659
935
2,000
3,600
5,670
11,800
300
81
168
342
597
84:7
1,810
3,260
5,140
10,700
350
75
155
314
549
779
1,660
3,000
4,730
9,840
400
70
144
292
511
725
1,550
2,790
4,400
,9,160
450
65
135
274
480
680
1,450
2,620
4,130
8,590
500
62
127
259
453
643
1,370
2,470
3,900
8,120
.550
59
121
246 .
430
610
1,300
2,350
3,700
7,710
600
56
115
235
410
582
1,240
2,240
3,530
7,350
650
64
HI
225
393
558
1,190
2,140
3,380
7,040
700
51
106
216
378
536
1,140
2,060
■),250
6,770
750
50
102
208
364
516
1,100
1,980
.3,130
6,520
800
48
99
201
351
498
1,060
1,920
3,020
6,290
850
46
96
195
340
482
1,030
1,850
2,920
6,090
900
45
93
189
330
468
1,000
, 1,800
2,840
5,910
950
44
90
183
320
454
970
1,750
2,750
5,7.30
i.oOo
42
88
178
311
442
944
1,700
2,680
5,580
1,100
40
83
169
296
420
896
1,610
2,540
5,300
1,200
38
79
161
282
400
855
1,540
2,430
5,050
1,300
37
76
155
270
383
819
1,470
2,320
4,840
1,400
35
7S
148
260
368
787
1,420
2,230
4,650
1,500
34
70
143
250
355
758
, 1,360
2,150
4,480
l,6b0
33
68
138
241
343
732
1,320
2,080
4,330
1,700
32
66
134
234
331
708
1,270
2,010
4,190
1,800
31
64
130
227
321
687
1,240
1,950
4,060
1,900
30
62
126
220
312
667
1,200
1,890
3,940
2,000
29
60
122
214
304
648
1,170
1,840
3,830
215
Table 12-34
2007 CALIFORNIA PLUMBING CODE
Table 12-34 Semi-Rigid Copper Tubing [NFPA Table 6.3(f)]
"
Gas:
Undiluted Propane
Inlet Pressure:
ll.Oin.w.c,
Pressure Drop:
0.5 in. w.c.
Specific Gravity:
L50
SPECIAL USE: Tube Sizing Between Single or Second Stage (Low Pressure Regulator) and Appliance
Tube Size (in.)
K&L-.
./■
%
V4
%
»/.
1
VA
VA
2
ACR:
%
'/4
%
%
%
VA
1%
—
—
Outside;
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:'
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Thousands of Btu per Hour
10
45
93
188
329
467
997
1,800
2,8.30
5,890
20
31
64
129
226
321
6S5
1,230
1,950
4,050
30
25
51
104
182
258
560
991
1,560
3,250
40
21
44
89
155
220
471
848
1,340
2,780
50
19
.S9
79
138
195
417
762
1,180
2,470
60
17
35
71
12.5
177
.378
681
1,070
2,240
70
16
32
66
115
163
348
626
988
2,060
80
15
30
61
107
152
324
583
919
1,910
90
14
28
67
100
142
304
547
862
1,800
100
13
27
54
95
134
287
517
814
1,700
125
11
24
48
84
119
264
458
722
1,500
150
10
21
44
76
108
230
415
654
1,360
175
NA
20
40
70
99
212
382
602
1,250
200
NA
18
37
65
92
197
355
560
1,170
250
NA
16
33
58
82
175
315
496
1,030
300
NA
15
30
52
74
158
285
449
936
350
NA
14
28
48
68
146
262
414
861
400
NA
13
26
45
63
136
244
385
801
450
NA
12
24
42
60
127
229
361
762
500
NA
11
23
40
56
120
216
341
710
550
NA
11
22
38
53
114
205
.324
674
600
NA
10
21
36
51
109
196
.309
643
650
NA
NA
20
34
49
104
188
296
616
700
NA
NA
19
33
47
100
180
284
592
750
NA
NA
18
32
45
96
174
274
570
800
NA
NA
18
31
44
93
168
264
551
850
NA
NA
17
30
42
90
162
256
533
900
NA
NA
17
2SI
41
87
157
248
517
950
NA
NA
16
28
40
86
1.53
241
502
1,000
NA
NA
16
27
39
83
149
234
488
1,100
NA
NA
15
26
37
78
141
223
464
1,200
NA
NA
14
25
35
75
135
212
442
1,300
NA
NA
14
24
34
72
129
203
423
1,400
NA
NA
13
23
ii2
69
124
196
407
1,500
NA
NA
13
22
31
66
119
188
392
1,600
NA
NA
12
21
30
64
115
182
378
1,700
NA
NA
12
20
29
62
112
176
366
1,800
NA
NA
11
20
28
60
108
170
.355
1,900
NA
NA
11
19
27
58
105
166
345
2,000
NA
NA
11
19
27
57
102
161
335
NA means a flow of less iJian 10,000 Bm/hr.
Note; All table entries are rounded to 3 significant digits.
"Table capacities are based on Type K copper tubing inside diameter (shown) , which has die smallest inside
diameter of the copper tubing products.
216
FUEL PIPING
Table 12-35
Table 12-35 Semi-Rigid Copper Tubing [NFPA Table 6.3(g)]
Gas:
Undiluted Propane
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity;
1.50
Tube Size (in.)
K&L:
Vi
■%
Vi
%
%
1
VA
I'/i
2
ACRi
Vs
'A
%
Vi
%
VA
1%
—
—
Outside:
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside:'
0.305
0.402
0.i>27
0.652
0.745
0.995 '
1.245
1.481
1.959
Leiigtli (ft)
Capacity in
Thousands of Btu per Hour
10
413
852
1,730
3,030
4,300
9,170
16,500
26,000
54,200
20
284
585
1,190
2,080
2,950
6,310
11,400
17,900
37,300
30
228
470
956
1,670
2,370
5,060
9,120
14,400
29,900
40
195
402
818
1,430
2,030
4,330
7,800
12,300
25,600
50
173
356
725
1,270
1,800
3,840
6,920
10,900
22,700
60
157
323
657
1,150
1,630
3,480
6,270
9,880
20,600
70
144
297
605
1,060
1,500
3,200
5,760
9,090
18,900
80
134
276
562
983
1,390
2,980
5,360
8,450
17,600
90
126
259
528
922
1,310
2,790
5,030
7,930
16,500
100
119
245
498
871
1,240
2,640
4,750
7,490
15,600
125
105
217
442
772
1,100
2,340
4,210
6,640
13,800
150
95
197
400
700
992
2,120
3,820
6,020
12,500
175
88
181
368
644
913
1,950
3,510
5,540
11,500
200
82
168
343
599
849
1,810
3,270
5,150
10,700
250
72
149
304
531
753
1,610
2,900
4,560
9,510
300
66
135
275
481
682
1,460
2,620
4,140
8,610
350
60
124
253
442
628
1,340
2,410
3,800
. 7,920
400
5B
116
235
411
584
1,250
2,250
3,540
7,370
450
53
109
221
.388
548
1,170
2,110
3,320
6,920
500
50
103
209
365
517
1,110
1,990
3,140
6,530
550
47
97
198
346
491
1,050
1,890
2,980
6,210
600
45
93
189
330
469
1,000
1,800
2,840
5,920
650
43
89
181
316
449
959
1,730
2,720
5,670
700
41
86
174
304
431
921
1,660
2,620
5,450
750
40
82
168
293
415
888
1,600
2,520
5,250
800
39
80
162
283
401
857
1,.540
2,430
5,070
850
37
77
157
274
388
829
1,490
2,350
4,900
900
36
75
152
265
376
804
1,450
2,280
4,750
950
35
72
147
258
366
781
1,410
2,220
4,620
1,000
34
71
143
251
356
760
1,370
2,160
4,490
1,100
32
67
136
238
338
721
1,300
2,050
4,270
1,200
31
64
1,30
227
,322
688 '
1,240
1,950
4,070
1,300
30
61
124
217
309
659
1,190
1,870
3,900
1,400
28
59
120
209
296
633
1,140
1,800
3,740
1,500
27
57
115
201
286
610
1,100
1,730
3,610
1,600
26
55
111
194
276
589
1,060
1,670
3,480
1,700
26
53
108
188
267
570
1,030
1,620
3,370
1,800
25
51
104
182
259
553
1,000
1,570
3,270
1,900
24
50
101
177
251
537
966
1,520
3,170
2,000
23
48
99
172
244
.522
940
1,480
.3,090
Note: All table enti-ies are rounded to ?i significant digits.
"Table capacities are based on Type K copper tubing in.side diameter (shown) , which ha,s the smallest inside
diameter of tlie copper tubing products.
217
Table 12-36 -Table 12-37
2007 CALIFORNIA PLUMBING CODE
Table 12-36 Corrugated Stainless Steel
Tubing (CSST) [NEPA Table 6.3(h)]
Gas:
Undiluted Propane
Inlet Pressure:
ll.Oin. w.c.
Pressure Drop:
0.5 in. w.c.
Specific Gravity:
l.SO
Tube Size (EHD)»
Flow Designation:
18
15
18
19
23
25
30
31
37
46
48
60
62
Lengtii (ft)
Capncily in Thousands of Btu per Hour
5
72
99
ISl
211
365
426
744
863
1,420
2,830
3,270
6,780
6,650
10
60
09
129
150
264
303
321
605
971
1,990
2,320
4,110
4,640
15
39
55
104
121
208
248
422
490
776
1,620
1,900
3,370
3,790
20
34
49
91
106
183
216
365
425
061
1,400
1,660
2,930
3,290
25
30
42
82
94
164
192
325
379
583
1,250
1,480
2,630
2,940
80
28
39
74
87
151
177
297
344
528
1,140
1,350
2,400
2,080
40
23
33
64
74
131
153
285
297
449
988
1,170
2,090
2,330
50
20
30
58
66
118
137
227
266
397
884
1,050
1,870
2,080
60
19
20
53
60
107
126
207
241
369
805
961
1,710
1,900
70
17
25
49
67
99
117
191
222
330
745
890
1,690
1,760
80
15
23
45
62
94
109
178
208
307
696
833
1,490
1,650
90
15
22
44
60
90
102
169
197
286
666
787
1,400
1,550
100
14
20
41
47
85
98
159
186
270
621
746
1,330
1,480
150
11
15
SI
36
66
75
123
143
217
606
611
1,090
1,210
200
9
14
28
33
60
69
112
129
183
438
,531
948
1,050
250
8
12
25
30
63
61
99
117
163
390
476
850
934
300
8
11
23
26
60
57
90
107
147
357
434
777
854
*EHD = Equiralent Hydraulic Diameter, which is a measure of tlie relative hydraulic eftlciency between
different tubing sizes. The greater tlie vahie of EHD, die greater the gas capacity of die tubing.
Notes:
( 1 ) Table includes losses for foxu- 90 degree bends and two end fittings. Tubing runs with larger numbers of
bends and/or fittings shall be increased by an equivalent length of tubing to the following equation: L= 1.3«,
where L is additional lengdi (ft) of tubing and n is the number of additional fittings and/or bends.
(2) All table entries are rounded to 3 significcint digits.
Table 12-37 Corrugated Stainless Steel
Tubing (CSST) [NFPA Table 6.3(i)]
Gas:
Undiluted
Propane
Inlet Pressure:
2.0 psi
Pressure Drop:
1.0 psi
Specific Gravity:
1.50
Tube Size (EHD)*
Flow Designation:
13
15
18
19
23
25
30
31
37
46
48
60
62
Length (ft)
Capacity in Thousands of Btu per Hour
10
426
568
927
1,110
1,740
2,170
4,100
4,720
7,130
15,200
16,800
29,400
34,200
25
262
347
.691
701
1,120
1,380
2,560
2,950
4,560
9,550
10,700
18,800
21,700
30
238
316
.640
640
1,030
1,270
2,.3,10
2,690
4,180
8,710
9,790
17,200
19,800
40
203
271
469
554
896
1,100
2,010
2,320
3,630
7,530
8,500
14,900
17,200
50
181
243
420
496
800
986
1,790
2,070
3,2(i0
6,730
7,610
13,400
15,400
75
147
196
344
406
663
809
1,460
1,690
2,680
5,480
6,230
11,000
12,600
80
140
189
.333
393
643
768
1,410
1,630
2,590
5,300
6,040
10,600
12,200
100
124
169
298
350
578
703
1,260
1,460
2,330
4,740
5,410
9,630
10,900
160
101
137
245
287
477
575
1,020
1,180
1,910
3,860
4,430
7,810
8,890
200
86
118
213
248
415
501
880
1,020
1,660
3,340
3,840
6,780
7,710
260
77
105
191
222
373
448
785
910
1,490
2,980
3,440
6,080
6,900
300
69
96
173
203
343
411
716
829
1,360
2,720
.3,1.60
5,660
6,300
400
60
82
151
175
298
.Wi5
616
716
1,160
2,330
2,730
4,830
5,460
500
53
72
135
168
268
319
550
638
1,030
2,100
2,460
4,330
4,880
*EHD = Equivalent Hydraulic Diameter, whicli is a measure of the relative hydraulic efticienc)' between
different tubing sizes. Tlie greater the value of EHD, the greater the gas capacity of die tubing.
Notes:
(1) Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds
¥> psi (based on 13 in. w.c. oudet pressure), do not use this table. Consult with regulator manufacturer for
pressure drops and capacit)' factor.s. Pressure drops across a regulator may vary witJi flow rate.
(2) CAUTION: Capacities shown in table may exceed maximum capacity for a selected regulator. Consult
with regulator or tubing manufacturer for guidance.
(3) Table includes losses for four 90 degree bends and uvo end fittings. Tubing runs with larger number of
bends and/or fittings shall be increased by an equivalent lengtii of tubing according to the following equa-
tion: /,= 1.3«, where Z. is additional length (ft) of tubing and wis die number of additional fittings and/or
bends.
(4) All table entries are rounded to 3 significant digits.
218
FUEL PIPING
Table 12-38 -Table 12-39
Table 12-38 Corragated Stainless Steel
Tubing (CSST) [NFPA Table 6.3(j)]
Gas;
Undiluted
Propane
Inlet Pressure;
5,0 psi
Pressure Drop;
3,5 psi
Specific Gravity;
1.50
Tube Size (EHD)»
Flow Designation:
13 15 18
10
23
25 1 30 1 31 1 37
46 1 48
60
62
Lcngd, (fl)
Capacity in Tliotisands of Bin per Hour
]0
30
■10
50
820
508
•101
396
352
1,070
66^1
003
520
463
1,710
1,090
999
867
777
2,060
1,310
1,190
1,030
920
3,150
2,040
1,870
1,030
1,400
•1,000 .
2,650
2,340
2.030
1,820
7,830
4,860
4.430
3,820
3.410
8,950
5,600
,5,100
4,400
3,930
13,100
8,400
7,680
6,680
5,9!)0
28,600
18,000
16,400
14,200
12,700
31,200
19,900
18,200
16,800
14,100
54,'100
3'1,700
31.700
27,000
24,700
63,800
40,400
36,900
32,000
28,000
75
80
100
150
200
284
275
243
196
169
376
303
324
262
226
637
618
553
453
393
7,57
731
656
535
464
1,210
1,170
1,050
860
755
1,.190
1,450
1,300
1,060
923
2,770
2,680
2.390
1,940
1,680
3,190
3,090
2,760
2,240
1,930
•1,920
4,770
4,280
3,510
3,0,50
10,300
9,990
8,930
7,270
6,290
11,600
11,200
10,000
8,210
7,130
20,300
19,000
17,600
14,400
12,.5O0
23,400
22,700
20,300
16,000
14,400
250
son
•100
SOO
150
136
117
10-1
. 202
183
158
140
352
322
279
251
415
379
328
294
679
022
.542
488
828
757
(i57
589
1,490
J,3()0
1,170
1,050
1,730
1,570
1,360
1.210
2,7.10
2,510
2,180
1,960 .
5,620
.5,120
4,430
3,960
6,390
5,840
i),070
4,540
11,200
10,300
8,920
8,000
12,900
11,700
10,200
9.110
"^EHD = Equivalent Hydniulic Diameter, winch is a measure of Uie relative hydraulic eHiciency between
dilitirent tubing sizes. The greater the value of EHD, the greater the gas capacity of tiie tubing.
Notes:
(1) Table does not incliide effect of pressure di-op across the line regulator. Wliere regulator loss exceeds
¥2 psi (based on 13 in. w.c. outlet pressure), do not use this table. Consult witli regulator manufacturer for
pressure dro]js and capacit)' factors. Pressure drops across a regulator may rary with How rate.
(2) CAUTION; Capacities shown in table may exceed maxhntun capacity for a selected regulator. Consult
widi regulator or tubing manufacturer for guidance.
(3) Table includes losses for four 90 degree bends and two end littings. Tubing runs with larger niunber of
bentis and/or fittings shall be increased by an equivalent lengdi of mbing according to the following equa-
tion: L= 1.3?;, where Lis addiuonal length (ft) of tubing and 7?. is the number of additional fudngs and/or
bends.
(4) All table entries are rounded to 3 significant digits.
Table 12-39 Polyethylene Plastic Pipe [NFPA Table 6.3(k)]
Gas:
Undiluted Propane
Inlet Pressure;
11,0 in, w.c.
Pressure Drop:
0.5 in. w.c.
Specific Gravity:
1.60
Pipe Size (in.)
Nominal OD;
VS
%
1
I'/j
IVS
2
Designation;
SDR 9,33
SDR 11.0
SDR 1 1.00
SDR 10.00
SDR 11,00
SDR 11.00
Actual ID;
0.660
0.860
1.077
1.328
1.564
1.943
Lcngtli (ft)
Capacity in Thotwands of Btn per Hour
10
940
680
1,230
2,130
3,210
5,770
20
233
468
844
1,460
2,210
3,970
3D
187
375
677
1,170
1,770
3,180
40
160
321
580
1,000
1,620
2,730
50
142
285
614
890
1,340
2,420
60
129
258
406
807
1,220
2,190
70
119
237
428
742
1,120
2,010
SO
no
221
398
690
1,040
1,870
90
103
207
374
648
978
1,760
100
98
190
353
612
924
1,660
120
87
173
313
542
819
1,470
150
78
157
284
•191
742
1,330
176
72
145
261
'152
683
1,230
200
(57
133
243
■120
635
1,140
260
60
119
215
373
563
1,010
300
54
108
196
338
610
916
350
60
99
179
,311
'109
8'13
•100
46
92
107
289
'130
784
450
43
87 ' •
157
271
409
736
500
41
82 '
148
256
,^87
6S15
Note: All table entries are rounded to 3 significant digits.
219
Table 12-40
2007 CALIFORNIA PLUMBING CODE
Table 12-40 Polyethylene Plastic Pipe [NFPA Table 6.3(1)]
Gas:
Undiluted Propane
Inlet Pressure:
2.0 psi
Pressure Drop:
I.Opsi
' Specific Gravity:
1.50
Pipe Size (in.)
Nominal OD:
Vi
%
1
I'/4
1'^
2
Designation:
SDR 9.33
SDR 11.0
SDR 11.00
SDR 10.00
SDR 11.00
SDR 11.00
Actual ID:
0.660
0.860
1.077
1.328
1.S54
1.943
Length (ft)
Capacity in Tliousands of Btu per Hour
10
3,130
6,260
11,300
19,600
29,500
53,100
20
2,150
4,300
7,760
13,400
20,300
36,500
30
1,7.30
3,450
6,230
10,800
16,300
29,300
40
1,480
2,960
5,330
9,240
14,000
25,100
50
1,310
2,620
4,730
8,190
12,400
22,200
60
1,190
2,370
4,280
7,420
11,200
20,100
70
1,090
2,180
3,940
6,830
10,300
18,500
80
1,010
2,030
3,670 .
6,350
9,590
17,200
90
952
1,910
3,440
5,960
9,000
16,200
100
899
1,800
3,250
5,630
8,500
15,300
125
797
1,600
2,880
4,990
7,530
13,500
150
722
1,450
2,610
4,520
6,830
12,300
175
664
1,330
2,400
4,160
6,280
11,300
200
618
1,240
2,230
.3,870
5,840
10,500
250
548
1,100
1,980
3,430
5,180
9,300
300
496
994
1,790
3,110
4,690
8,430
350
457
914
1,650
2,860
4,320
7,760
'100
425
851
1,530
2,660
4,020
7,220
■150
399
798
1,440
2,500
3,770
6,770
300
377
734
l,.3C0
2,360
3„560
6,390
550
3i>8
716
1,290
2,240
3,380
6,070
BOO
341
683
1,230
2,140
3,220
5,790
650
327
654
1,180
2,010
3,090
5,550
700
314
628
1,130
1,960
2,970
5,330
750
302
605
1,090
1,890
2,860
5,140
800
292
585
1,050
1,830
2,760
4,960
850
283
566
1,020
1,770
2,670
4,800
900
274
549
990
1,710
2,iJ90
4,650
950
266
533
961
1,670
2,520
4,.520
1,000
259
518
9B5
1,620
2,450
4,400
1,100
246
492
888
1,540
2,320
4,170
1,200
234
470
847
1,470
2,220
3,980
1,300
225
4ii0
811
1,410
2,120
3,810
1,400
216
432
779
1,350
2,040
3,660
1,500
208
416
751
1,300
1,960
3,530
1,600
201
402
725
1,260
1,900
3,410
1,700
194
389
702
1,220
1,840
3,300
1,800
188
377
680
1,180
1,780
3,200
1,900
183
366
661
1,140
1,730
3,110
2,000
178
356
643
1,110
1,680
3,020
Note: All table entrie.s are roiinded to Z significant digit-s.
220
FUEL PIPING
Table 12-41
Table 12-41 Polyethylene Plastic Tubing
[NFPA Table 6.3 (m)]
Gas:
Undiluted Propane
Inlet Pressure:
11.0 in. w.c.
Pressure Drop:
0.5 in. w.c
Specific Gravity:
1.50
Plastic Tubing Size (CTS) (in.)
Nominal OD:
'/2
s/i
Designation:
SDR 7.00
SDR 11.00
Actual ID:
0.445
0.927
Length (ft)
Capacity in Thousands of Btu per Hour
10
121
828
20
83
569
30
67
457
40
57
, 391
50
51
347
60
46
314
70
42
289
80
39
269
90
37
252
100
35
238
125
31
211 ■
150
28
191
175
26
176
200
24
164
225
22
154
250
21
145
275
20
138
300
19
132
350
18
121
400
16
113
450
15
106
500
15
100
Note: All table entries are rounded to 3 significant digits.
221
2007 CALIFORNIA PLUMBING CODE
222
CHAPTER 13
HEALTH CARE FACILITIES AND MEDICAL GAS AND VACUUM SYSTEMS
Part I - Special Requirements for
Health Care Facilities.
1301.0 Application.
1301.1 Construction and equipment requirements
shall be applied only to new construction and new
equipment, except as modified in individual
chapters. Only the altered, renovated, or modernized
portion of an existing system or individual
component shall be required to meet the installation
and equipment requirements stated in this standard.
If the alteration, renovation, or modernization
adversely impacts existing performance requirements
of a system or component, additional upgrading
shall be required. [NFPA 99.1.3.2]
1301.2 This chapter applies to the special fixtures
and systems in health care facilities and to the special
plumbing requirements for such facilities. Other
plumbing in such facilities shall comply with other
applicable sections of this code. [For OSHPD 1, 2, 3
& 4] Medical gas systems for health care facilities that are
regulated hy OSHPD (hospitals, skilled nursing facilities',
and intermediate care facilities, licensed clinics, and
correctional treatment centers) shall he in accordance with
NFPA 99-2005. See California Building Code Table
1224.2 for location and number of station outlets for
oxygen, vacuum, and medical air.
1 301 .3 This chapter shall not apply to breathing air
replenishment (BAR) systems.
1302.0 Medical Gas and Vacuum Piping Systems
- Installation Requirements.
The installation of medical gas and vacuuna piping
systems shall be in accordance with the reqxiirements
of this chapter and/or the appropriate standards
adopted by the Authority Having Jurisdiction. For
additional standards see Table 14-1.
1302.1 The installation of individual components
shall be made in accordance with the instructions of
the manufacturer. Such instructions shall include
directions and information deemed by the
manufacturer to be adequate for attaining proper
operation, testing, and maintenance of the medical
gas and vacuum systems. Copies of the manu-
facturer's instructions shall be left with the system
owner. [NFPA 99 5.1.10.6.9.1, 5.1.10.6.9.2, 5.1.10.6.9.3]
1 302.2 The installation of medical gas and vacuum
systems shall be made by qualified, competent
technicians who are experienced in making such
installations. Installers of medical gas and vacuum
systems shall meet the requirements of ANSI/ASSE
Standard 6010, Professional Qualification Standard for
Medical Gas and Vacuum System Installers. [NFPA 99
5.1.10.6.11.1,5.1.10.6.11.2]
1 302.3 Brazing shall be performed by individuals
who are qualified under the provisions of Section
1311.6. [NFPA 99 5.1.10.6.11.3]
1302.4 Prior to any installation work, the installer of
medical gas and vacuum piping shall provide and
maintain documentation on the job site for the
qualification of brazing procedures and individual
brazers that is required under Section 1311.6.
[NFPA 99 5.1.10.6.11.4]
1303.0 Protrusions from Walls.
1303.1 Drinking fountain control valves shall be
flush-mounted or fully recessed when installed in
corridors or other areas where patients may be
transported on a gurney, bed, or wheelchair.
1303.2 Piping exposed in corridors and other areas
where subject to physical damage from the move-
ment of carts, stretchers, portable equipment, or
vehicles shall be protected. [NFPA 99 5.1.10.6.2.1]
1304.0 Psychiatric Patient Rooms.
Piping and drain traps in psychiatric patient rooms
shall be concealed. Fixtures and fittings shall be
resistaiit to vandalism. [NFPA 101]
1305.0 Locations for Ice Storage.
Ice makers or ice storage containers shall be located
in nursing stations or similarly supervised areas to
minimize potential contamination. [See NFPA 101]
1306.0 Sterilizers.
1306.1 General. The requirements of this section
apply to sterilizers and bedpan steamers. Such
equipment shall be installed in accordance with this
code and the manufacturer's installation instructions.
1306.2 Indirect Waste Connections.
Waste drainage from sterilizers and bedpan steamers
shall be connected to the sanitary drainage system
through an airgap in accordance with this chapter
and Chapter 8. The size of indirect waste piping shall
223
1306.2-1310.3
2007 CALIFORNIA PLUMBING CODE
not be less than the size of the drain connection on
the fixture. Each such indirect waste pipe shall not
exceed fifteen (15) feet (4,572 mm) in length and shall
be separately piped to a receptor. Such receptors
shall be located in the same room as the equipment
served. Except for bedpan steamers, such indirect
waste pipes shall not require traps. A trap having a
minimum seal of three (3) inches (80 mm) shall be
provided in the indirect waste pipe for a bedpan
steamer.
1307.0 Vapor Vents and Stacks for Sterilizers.
1307.1 General. When a sterilizer has provision for
a vapor vent and such a vent is required by the
manufacturer, the vent shall be extended to the
outdoors above the roof. Sterilizer vapor vents shall
be installed in accordance with the manufacturer's
instructions and shall not be connected to any
drainage system vent.
1308.0 Aspirators.
1308.1 See Section 603.4.9, Water Inlets to Water
Supplied Aspirators. Provisions for aspirators or
other watersupplied suction devices shall be
installed only with the specific approval of the
Authority Having Jurisdiction. Where aspirators are
used for removing body fluids, they shall include a
collection container to collect liquids and solid
particles. Aspirators shall indirectly discharge to the
sanitary drainage system through an airgap in
accordance with Chapter 8. The potable water
supply to an aspirator shall be protected by a
vacuum breaker or equivalent backflow protection
device in accordance with Section 603.0.
Part II — Medical Gas and Vacuum Systems.
1309.0 Application.
1309.1 The provisions herein shall apply to the
installation, testing, and verification of medical gas
and vacuum piping in hospitals, clinics, and other
health care facilities.
1309.2 The purpose of this chapter is to provide
requirements for the installation, testing, and
verification of medical gas and medical vacuum
systems, from the central supply system to the
station outlets or inlets.
1309.3 Wherever the terms medical gas or vacuum
occiir, the provisions shall apply to aU piped systems
for oxygen, nitrous oxide, medical air, carbon
dioxide, helium, medical-surgical vacuum, waste
anesthetic gas disposal, and mixtures thereof.
Wherever the name of a specific gas or vacuum
service occurs, the provision shall apply only to that
gas. [NFPA 99 5.1.1.2]
1309.4 This chapter does not apply to portable
compressed gas systems. [NFPA 99 4-1.3]
1309.5 This chapter does not apply to:
(A) Cylinder and container management,
storage, and reserve requirements.
(B) Gas central supply and bulk supply systems,
except as addressed in this chapter.
(C) Electrical connections and requirements.
(D) Motor requirements and controls.
(E) Systems having nonstandard operating
pressures, except as addressed in this chapter.
(F) Waste anesthetic gas disposal (WAGD)
systems.
(G) Surface-mounted medical gas rail systems
1 309.6 The requirements of this chapter shall not be
interpreted to conflict with the requirements of
NFPA 99 Standard for Health Care Facilities. For
requirements of portions of medical gas and medical
vacuum systems not addressed in this chapter or
medical gas and medical vacuum systemis beyond
the scope of this chapter refer to NFPA 99 Standard
for Health Care Facilities.
1309.7 An existing system that is not in strict
compliance with the provisions of the standard
(Code) shall be permitted to be continued in use as
long as the Authority Having Jurisdiction has
determined that such use does not constitute a
distinct hazard to life. [NFPA 99 4-1.4] (Same as the
2002 edition of NFPA 99 5.1.1.3.)
1310.0 Definitions.
1310.1 Building Supply - The pipe from the source
of supply to a buUding or structure.
1310.2 Critical Care Area - Those special care
units, intensive care units, coronary care units,
angiography laboratories, cardiac catheterization
laboratories, delivery rooms, operating rooms,
postanesthesia recovery rooms, emergency
departments, and similar areas in which patients are
intended to be subjected to invasive procedures and
connected to line-operated, patient-care-related
electrical appliances. [NFPA 99 3.3.135.2]
1310.3 General Care Areas - General care areas are
patient bedrooms, examining rooms, treatment
rooms, clinics, and similar areas in which it is
intended that the patient will come in contact with
ordinary appliances such as a nurses-call system,
electric beds, examining lamps, telephones, and
entertainment devices. [NFPA 99 2-2]
224
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
1310.4 Manifold - A device for connecting outlets of
one or more gas cylinders to the central piping
system for that specific gas. [NFPA 99.2-2]
1310.5 Medical Air - For purposes of this standard,
medical air is air supplied from, cylinders, bulk
cor\tainers, medical air compressors, or has been
reconstituted from oxygen USP and oil-free, dry
nitrogen NF. Medical air shall be required to have
the following characteristics:
(1) Be supplied from cylinders, bulk containers,
medical air compressor sources, or be
reconstituted from oxygen USE and oil-free
dry nitrogen NF.
(2) Meet the requirements of medical air USP.
(3) Have no detectable liquid hydrocarbons.
(4) Have less than 25 ppm gaseous hydrocarbons.
(5) Have equal to or less than 5 mg/m^ of
permanent particulates sized 1 micron or
larger in the air at normal atmospheric
pressure. [NFPA 99 3.3.106, 5.1.3.5.1]
1310.6 Medical Gas - Gas used in a medical
•- facility, including oxygen, nitrous oxide, carbon
dioxide, helium, medical air, and mixtures of these
gases. Standards of purity apply.
1310.7 Medical Gas System - Complete system
consisting of a central supply system (manifold,
bulk, or compressors), including control equipment
and piping extending to station outlets at the points
where medical gases may be required.
1310.8 Medical Vacuum System - See 1310.19,
Vacuum System - Level 1.
1310.9 Nitrogen, NF (Oil-Free, Dry) (Nitrogen for
Brazing and Testing) - Nitrogen complying, at a
I minimum, with oil-free, dry nitrogen NF. [NFPA 99
3.3.120.1]
1310.10 Patient Care Area - Any portion of a health
care facility wherein patients are intended to be
examined or treated. [NFPA 99 2-2]
1310.11 Purge, Flow - The removal of oxygen from
a system by oil-free dry nitrogen during brazing.
1310.12 Purge, System - The removal of nitrogen
from a system with the medical gas required for that
system.
1310.13 SCFM - Standard cubic feet per minute. \NPPA
993.3.159]
1310.14 Special Hazard Area - An area such as a
kitchen or electrical switch-gear room.
1310.15 Station Inlet - An inlet point in a medical-
surgical piped vacuiun distribution system at which
the user makes connections and disconnections.
[NFPA 99 3.3.171]
1310.16 Station Outlet - An inlet point in a piped
1310.4-1311.1
medical/surgical vacuum distribution system at
which the user makes connections and
disconnections. [NFPA 3.3.167]
1310.17 Use Point - A room or area of a room
where medical gases are dispensed to a single
patient for medical purposes. A use point is
permitted to be comprised of a number of station
outlets of different gases. [NFPA 99 2-2]
1310.18 User Outlet - See Station Outlet.
1310.19 Vacuum System - Level 1 - A system
consisting of central vacuum-producing equipment
with pressure and operating controls, shutoff valves,
alarm warning systems, gauges, and a network of
piping extending to and terminating with suitable
station inlets at locations where patient suction could
be required. [NFPA 99 2-2]
1310.20 Valve, Isolation - A valve that isolates one
piece of equipment fronn. another.
1310.21 Valve, Riser - A valve at the base of a
vertical riser that isolates that riser.
1310.22 Valve, Service - A valve serving horizontal
piping extending from a riser to a station outlet or
inlet.
1310.23 Valve, Source - A single valve at the
source that controls a niimber of imits that make up
the source.
1310.24 Valve, Zone - A valve that controls the gas
or vacuum to a particular area.
1310.25 Waste Anestiietic Gas Disposal - The
process of capturing and carrying away gases vented
from the patient breathing circuit during the normal
operation of gas anesthesia or analgesia equipment.
[NFPA 99 3.3.178]
1311.0 General Requirements.
1311.1 Oxygen Compatibility - Tubes, valves,
fittings, station outlets, and other piping cortiponents
in medical gas systems shall have been cleaned for
oxygen service by the manufacturer prior to
installation in accordance with CGA 4.1, Gleaning
Equipment for Oxygen Service, except that fittings shall
be permitted to be cleaned by a supplier or agency
other than the manufacturer. [NFPA 99 5.1.10.1.1]
1311.1.1 Components include but are not
limited to containers, valves, valve seats,
lubricants, fittings, gaskets, and interconnecting
equipment including hose. Easily ignitable
materials should be avoided.
Compatibility involves both combustibility
and ease of ignition. Materials that burn in air
will burn violently in pure oxygen at normal
pressure and explosively in pressurized oxygen.
225
1311.1 -1311.6
2007 CALIFORNIA PLUMBING CODE
Also, many materials that do not bum in air wUl
do so in pure oxygen, particularly under
pressure. Metals for containers and piping have
to be carefully selected, depending on service
conditions. The various steels are acceptable for
many applications, but some service conditions
can call for other materials (usually copper or its
alloys) because of their greater resistance to
ignition and lower rate of combustion.
Similarly, materials that can be ignited in air
have lower ignition energies in oxygen. Many
such materials can be ignited by friction at a
valve seat or stem packing or by adiabatic
compression produced when oxygen at high
pressure is rapidly introduced into a system
initially at low pressure.
1311.1.2 Materials used in central supply
systems shall meet the following requirement:
In those portions of systems intended to
handle oxygen or nitrous oxide at gauge
pressures of less than 2,070 kPa (300 psi),
material construction shall be compatible with
oxygen under the temperatures and pressures to
which the components can be exposed in the
containment and use of oxygen, nitrous oxide,
mixtures of these gases, or mixtures containing
more than 23.5 percent oxygen. [NFPA 99
5.1.3.4.3 (2)]
1311.2 Certification of medical gas and medical
vacuum systems shall conform to the requirements
of Section 1328.0 of this code, the Authority Having
Jurisdiction, and NFPA 99 Standard for Health Care
Facilities section 5.1.12. [NFPA 5.1.12].
131 1 .3 Prior to any installation work, the installer of
medical gas and vacuum piping shall provide and
maintain documentation on the job site for the
qualification of brazing procedures and individual
brazers that is required under Section 1311.6. [NFPA
99 5.1.10.6.11.4]
1 31 1 .3.1 Each length of tube shall be delivered
plugged or capped by the manufacturer and
kept sealed until prepared for installation.
Fittings, valves, and other components shall be
delivered sealed, labeled, and kept sealed until
prepared for installation. [NFPA 99 5.1.10.1.2
and 5.1.10.1.3]
1 31 1 .4 AU medical gas and medical vacuum systems
shall be supplied from a source consisting of at least
two units - primary and secondary, e.g., a manifold
consisting of two cylinder banks with at least two
cylinders in each bank, a minimum of two air
compressors, or a minimum of two vacuum ptmips.
However, two supply pipelines are not required.
1 31 1 .5 Health Care Organization personnel shall be
permitted to install piping systems if all the
requirements of this chapter are met during
instaUation. [NFPA 99 4-3.1.2.10(b)]
1 31 1 .6 Brazing procedures and brazer performance
for the installation of medical gas and vacuum
piping shall be qualified in accordance with either
Section IX, Welding and Brazing Qualifications, of the
ASME Boiler and Pressure Vessel Code, or AWS
B2.2, Standard for Brazing Procedure and Performance
Qualifications, both as modified below. [NFPA
5.1.10.6.12.1]
1311.6.1 Brazers shall be qualified by visual
examination of the test coupon followed by
sectioning. [NFPA 5.1.10.6.12.2]
1311.6.2 The Brazing Procedure Specification
(BPS) shall address cleaning, joint clearance,
overlap, internal purge gas purge gas flow rate,
and filler metal. [NFPA 99 4-3.1.2.12(b)]
1311.6.3 The brazing procedure specification
and the record of brazer performance
qualification shall document filler metal used,
cleaning, joint clearance, overlap, internal
purge gas, and flow rate during brazing of
coupon, and the absence of internal oxidation
in the completed coupon. [NFPA 5.1.10.6.12.4]
1311.6.4 Brazing procedures qualified by a
technically competent group or agency shall be
permitted xmder the following conditions:
(1) The brazing procedure specification and
the procedure qualification record
meets the requirements of this standard.
(2) The employer obtains a copy of both the
brazing procedure specification and the
supporting qualification records from
the group or agency and signs and dates
these records, thereby accepting
responsibility for the qualifications that
were performed by the group or agency.
(3) The employer qualifies at least one
brazer following each brazing procedure
specification used. [NFPA 5.1.10.6.12.5]
1311.6.5 An employer shall be permitted to
accept brazer qualification records of a previous
employer under the following conditions:
(1) The brazer has been qualified following
the same or an equivalent procedure
that file new employer uses.
(2) The new employer obtains a copy of the
record of brazer performance qualifi-
cation tests from the previous
employer and signs and dates these
records, thereby accepting responsibility
for the qualifications performed by the
previous employer. [NFPA 99 5.1.10.6.12.6]
226
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
1311.6.6 Performance qualifications of brazers
shall remain in effect indefinitely unless the
brazer does not braze with the qualified
procedure for a period exceeding six months, or
there is a specific reason to question the ability
of the brazer. [NFPA 99 5.1.10.6.12.7]
1312.0 Plan Review.
1312.1 Before any medical gas or medical vacuum
system is installed or altered in any hospital,
medical facility, or clinic, duplicate plans and
specifications shall be filed with the Authority
Having Jurisdiction. Approval of the plans shall be
obtained prior to issuance of any permit by the
Authority Having Jurisdiction.
1312.2 Plans and specifications shall show the
following, in detail:
1312.2.1 Plot plan of the site, drawn to scale,
indicating the location of existing or new
cylinder storage areas, property lines,
driveways, and existing or proposed bvdldings.
1312.2.2 Piping layout of the proposed piping
system or alteration, including alarms, valves,
origin of gases, and user outlets /inlets. The
demand and loading of any piping, existing or
future, shall also be indicated.
1312.2.3 Complete specification of materials.
1312.3 Plans and specifications submitted to the
Authority Having Jurisdiction shall clearly indicate
the nature and extent of the work proposed and shall
show in detail that such work will conform to the
provisions of this code.
1312.4 A record of as-built plans and valve
identification records shall remain on the site at
all times.
1313.0 System Performance.
1313.1 Required Operating Pressures. All medical
gas and medical vacuum systems shall be capable of
delivering service in the pressure ranges listed in Table
13-1. [NFPA 99 Table 5.1.11]
1313.2 IViinimum Flow Rates. All medical gas and
medical vacuum systems shall be capable of
supplying the flow rates Usted in Table 13-2.
1313.3 IViinimum Station Outlets/Inlets. Station
outlets and inlets for medical gas and medical vacuum
systems shall be provided as listed in Table 13-3.
1314.0 Required Pipe Sizing.
1314.1 Where the maximum demand for each
medical gas or vacuum system and the maximum
length of piping between the source equipment and
1311.6-1314.3
the most distant station outlet/inlet do not exceed the
values in Table 13-6, the size of pipe of each section of
the system shall be determined using Tables 13-4 and
13-6. The size for systems beyond the range of Table
13-6 shall be determined by using the methods set
forth in Section 1314.3 of this chapter.
1314.2 To determine the size of each section of pipe
in any system within the range of Table 13-6,
proceed as follows:
1314.2.1 Measure the length of the pipe from
the source equipment location to the most
remote station inlet/outlet on the system.
1314.2.2 In Table 13-6, select the column
showing that distance, or the next longer
distance if the table does not give the exact
length.
1 31 4.2.3 Starting at the most remote outlet/inlet,
find in the vertical column just selected the
medical gas or vacuum demand for that
inlet/ outlet. If the exact figure of demand is not
shown, choose the next larger figure below in the
column.
1314.2.4 Opposite this demand figure, in the
first column at the left in Table 13-6, will be
foimd the correct size of pipe.
1314.2.5 Using this same vertical column,
proceed in a similar maimer for each section of
pipe serving this inlet/outlet. For each section of
pipe, determine the total gas or vacuum demand
supplied by the section, using Table 13-4.
1314.2.6 Size each section of branch piping not
previously sized by measuring the distance from
the source equipment location to the most
remote inlet/outlet in that branch, and follow
the procedures of Sections 1314.2.2, 1314.2.3,
1314.2.4, and 1314.2.5.
Note:
Size branch piping in the order of the distance from
the source location, beginning with the most distant
outlet not previously sized.
1314.3 For conditions other than those covered by
Section 1314.1 of this section, such as longer runs of
greater gas or vacuum demands, the size of each gas
or vacuum piping system shall be determined by
standard engineering methods acceptable to the
Authority Having Jurisdiction, and each system shall
be so desigiied that the total pressure drop or gain
between the source equipment and any iidet/ outlet
will not exceed the allowable pressures shown in
Table 13-1.
227
1315.0-1316.6
2007 CALIFORNIA PLUMBING CODE
1315.0 Workmanship.
1315.1 All design, construction, and workmanship
shall be in conformity with accepted engineering
practices and shall meet the requirements of this code.
1315.2 Cracks, holes, or other imperfections in
materials shall not be concealed by welding, brazing,
or soldering, or by using paint, wax, tar, or other
leak-sealing or repair agents.
1315.3 Burred ends of all tubing shall be deburred
using a deburring tool to the full bore of the tube,
and aU chips shall be removed.
1316.0 Materials. The provisions of this section
apply to the field-installed piping for the distribution
of medical piped gases. [NFPA 4-3.1.2.7]
1316.1 Tubes, valves, fittings, station outlets, and
other piping components in medical gas systems
shall have been cleaned for oxygen service by the
manufacturer prior to installation in accordance
with CGA 4.1, Cleaning Equipment for Oxygen Service,
except that fittings shall be permitted to be cleaned
by a supplier or agency other than the manu-
facturer. [NFPA 99: 5.1.10.1.1]
1316.2 Each length of tube shall be delivered
plugged or capped by the manufacturer and kept
sealed until prepared for installation. Fittings,
valves, and other components shall be delivered
sealed, labeled, and kept sealed until prepared for
instaUation. [NFPA 99: 5.1.10.1.2, 5.1.10.1.3]
1316.3 Tubes shall be hard-drawn seamless copper
ASTM B 819 medical gas tube. Type L, except that
where operating pressures are above a gauge
pressure of 1,275 kPa (185 psi). Type K shall be used
for sizes larger than DN80 (NFS 3) (3-1/8 in. O.D.).
ASTM B 819 medical gas tube shall be identified
by the manufacturer's markings "OXY," "MED,"
"OXY/MED," "OXY/ACR," or "ACR/MED" in blue
(Type L) or green (Type K).
Piping for vacuum systems shall be constructed
of any of the following:
(1) Hard-drawn seamless copper tube
(a) ASTM B 88, Standard Specification for
Seamless Copper Water Tube, copper tube
(Types K, L, M).
(b) ASTM B 280, Standard Specification for
Seamless Copper Tubing for Air Condition-
ing and Refrigeration Field Service, copper
ACR tube.
(c) ASTM B 819, Standard Specification for Seam-
less Copper Tube for Medical Gas Systems,
copper medical gas tubing (Type K or L).
(2) Stainless steel tube
Piping systems shall be designed and sized to
deliver the required flow rates at the utilization
pressures.
Mains and branches in medical gas-piping
systems shaU be not less than DN15 (NFS 1/2) (5/8
in. CD.) size.
Mains and branches in medical-surgical vacuum
systems shall be not less than DN20 (NFS 3/4) (7/8
in. CD.) size.
Drops to individual station outlets and inlets
shall be not less than DN15 (NFS 1/2) (5/8 in. CD.)
size.
Runouts to alarm panels and connecting tubing
for gauges and alarm devices shall be permitted to
be DNS (NFS 1/4) (3/8 in. CD.) size. [NFPA 99
5.1.10.1.4, 5.1.10.1.5, 5.1.10.10.1]
1316.4 Turns, offsets, and other changes in direction
in welded or brazed medical gas and vacuum piping
shall be made with wrought-copper capillary fittings
complying with ASME B16.22, Wrought Copper and
Copper Alloy Solder-Joint Pressure Fittings, or
brazed fittings complying with ASME B16.50,
Wrought Copper and Copper Alloy Braze-Joint
Pressure Fittings.
1316.4.1 Cast-copper alloy fittings shall not be
permitted.
1 31 6.4.2 Branch connections in vacuum piping
systems shall be permitted to be made using
mechaiucally formed, drilled, and extruded tee-
branch connections that are formed in accordance
with the tool manufacturer's instructions and
brazed. [NFPA 5.1.10.3.1, 5.1.10.3.2, 5.1.10.3.3,
5.1.10.5.8 (4)-(7)]
1316.5 The following special fittings shall be
permitted to be used in Ueu of brazed joints:
(1) Memory-metal couplings having temperature
and pressure ratings joints not less than that
of a brazed joint.
(2) Listed or approved metallic gas tube fittings
that, when made up, provide a permanent
joint having the mechanical, thermal, and
sealing integrity of a brazed joint.
(3) Dielectric fittings where required by the
manufacturer of special medical equipment
to electrically isolate the equipment from the
piping distribution system.
(4) Axially swaged, elastic strain preload fittings
providing metal to metal seal having pressure
and temperature ratings not less than that of
a brazed joint and, when complete, are
permanent and nonseparable.
1316.6 The following joints shall be prohibited
throughout medical gas and vacuum distribution
pipeline systems:
(1) Flared and compression-type cormections.
228
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
including connections to station outlets and
inlets, alarm devices, and other components.
(2) Other straight-threaded connections, including
unions.
(3) The use of pipe-crimping tools to permanently
stop the flow.
131 6.6.1 Threaded joints in medical gas and
vacuum distribution piping shall meet the
following requirements:
(1) Be limited to cormections to pressure/
vacuum indicators, alarm devices, and
source equipment.
(2) Be tapered pipe threads compl5dng with
ANSI Bl.20.1, Pipe Threads, General
Purpose.
(3) Be made up with polj^etrafluoroethylene
(such as Teflon'''^) tape or other thread
sealant recommended for oxygen
service, with the sealant apphed to the
male fhreads only. [NFPA 99 5.1.10.5.8,
5.1.10.5.9 and 5.1.10.4]
1 31 6.7 New or replacement shutoff valves shall be
as follows:
(1) Quarter turn, full ported baU type.
(2) Brass or bronze construction.
(3) Have extensions for brazing.
(4) Have a handle indicating open or closed.
(5) Consist of three pieces permitting in-line
serviceability. [NFPA 99 5.1.4.3]
1316.8 Soldered joints in copper Level 3 vacuimi and
Level 3 gas-powered systems piping shall be made
in accordance with ASTM B 828, Making Capillary
Joints by Soldering of Copper and Copper Alloy Tube and
Fittings, using a lead-free solder filler metal
containing not more than 0.2 percent lead by
volume. [NFPA 5.1.10.2.1, 5.1.10.4, and 5.3.10.5]
1317.0 Cleaning for Medical Gas Piping Systems.
1317.1 The interior surfaces of tube ends, fittings,
and other components that were cleaned for oxygen
service by the manufacturer, but become
contaminated prior to being installed, shall be
permitted to be recleaned on-site by the installer by
thoroughly scrubbing the interior surfaces with a
clean, hot water-alkaline solution, such as sodium
carbonate or trisodiiun phosphate 450 g to 11 L (1 lb.
to 3 gal.) of potable water and thoroughly rinsing
them with clean, hot potable water.
Other aqueous cleaning solutions shall be permitted
to be used for on-site recleaning permitted above.
1316.6-1318.4
provided that they are as recommended in CGA
Pamphlet G-4.1, Cleaning Equipment for Oxygen
Service, and are listed in CGA Pamphlet 02-DIR,
Directory of Cleaning Agents for Oxygen Service. [NFPA
99 5.1.10.5.3.10 and 5.1.10.5.3.11]
1317.2 Material that has become contaminated
internally and is not clean for oxygen service shall
not be installed. [NFPA 99 5.1.10.5.3.12]
1318.0 Installation of Piping.
1318.1 Piping shall be protected against freezing,
corrosion, and physical damage.
Piping exposed in corridors and other areas
where subject to physical damage from the
movement of carts, stretchers, portable equipment,
or vehicles shall be protected.
Piping underground within buildings or
embedded in concrete floors or walls shall be
installed in a continuous conduit. [NFPA 99
5.1.10.6.2]
1318.2 Piping risers shall be permitted to be
installed in pipe shafts if protected from physical
damage, effects of excessive heat, corrosion, or
contact with oU.
Piping shall not be installed in kitchens, elevator
shafts, elevator machine rooms, areas with open
flames, electrical service equipment over 600 volts,
and areas prohibited under NFPA 70, National
Electrical Code, except for the following locations:
(1) Room locations for medical air compressor
supply systems and medical-surgical vacuiom
pump supply systems.
(2) Room locations for secondary distribution
circuit panels and breakers having a maximtun
voltage rating of 600 volts.
Medical gas piping shall be permitted to be
installed in the same service trench or turmel with
fuel gas lines, fuel oil lines, electrical lines, steam
lines, and similar utilities provided that the space is
ventilated (naturally or mechanically) and the
ambient temperature aroimd the medical gas piping
is limited to 130°F (54°C ) maximum.
Medical gas piping shall not be located where
subject to contact with oil, including a possible
flooding area in the case of a major oil leak. [NFPA
99 5.1.10.10.3]
1318.3 Buried piping outside of buildings shall be
installed below the local level of frost penetration.
1 31 8.4 The installation procedure for underground
piping shaU protect the piping from physical damage
while being backfilled.
If underground piping is protected by a condtiit,
cover, or other enclosure, the following requirements
shall be met: ,
229
1318.4-1319.1
2007 CALIFORNIA PLUMBING CODE
(1) Access shall be provided at the joints for
visual inspection and leak testing.
(2) The conduit, cover, or enclosure shall be self-
draining and not retain groundwater in
prolonged contact with the pipe.
Buried piping that will be subject to surface
loads shall be buried at a depth that wiU protect the
piping and its enclosure from excessive stresses.
The minimum backfilled cover above the top of
the pipe or its enclosure for buried piping outside of
buildings shall be 36 inches (900 mm), except that the
minitniim cover shall be permitted to be reduced to
18 inches (450 mm) where physical damage is
otherwise prevented.
Trenches shall be excavated so that the pipe
enclosure has firm, substantially continuous bearing
on the bottom of the trench.
Backfill shall be clean and compacted so as to
protect and imiformly support the pipe enclosure.
A continuous tape or marker placed immediately
above the enclosure shall clearly identify the pipeline
by specific name.
A continuous warning means shall also be
provided above the pipeline at approximately one-
half the depth of bury.
Where underground piping is installed through
a wall sleeve, the ends of tiie sleeve shall be sealed to
prevent the entrance of groundwater into the
building. [NFPA 99 5.1.10.6.5]
1318.5 Hose and flexible connectors, both metallic
and nonmetallic, shall be no longer than necessary
and shall not penetrate or be concealed in walls,
floors, ceilings, or partitions. Flexible cormectors,
metallic or nonmetallic, shall have a minimum burst
pressure, with a gauge pressure of 6,895 kPa (1,000
psi). [NFPA 99 5.1.10.6.7]
1318.6 Where a positive-pressure medical gas-
piping distribution system, originally used or
constructed for the use at one pressiure and for one
gas, is converted for operation at another presstire or
for another gas, all provisions of NFPA 5.1.10 shall
apply as if the system were new.
A vacuum system shall not be permitted to be
converted for use as a gas system. [NFPA 99
5.1.10.6.10]
1318.7 Piping exposed in corridors and other areas
where subject to physical damage from the
movement of carts, stretchers, portable equipment, or
vehicles shall be protected.
1318.8 Piping shall be supported from the building
structure in accordance with MSS Standard Practice
SP-69, Piping Hangers and Supports - Selection and
Application.
Hangers and supports shall comply with MSS
Standard Practice SP-58, Pipe Hangers and Supports -
Materials, Design, and Manufacture.
Hangers for copper tube shall have a copper
finish and be sized for copper tube.
In potentially damp locations, copper tube hangers
or supports that are in contact with the tube shall be
plastic-coated or otherwise be instdated from the tube.
Maximum support spacing shall be in
accordance with Table 13-7. [NFPA Table 5.1.10.6.4.5]
1318.9 Where required, medical gas and vacuum
piping shall be seismically restrained against
earthquakes in accordance with the applicable
building code. [NFPA 99 5.1.10.6.4.6] Seismic
considerations shall coriform to the requirements of
this code and the Authority Having Jurisdiction.
1318.10 Two or more medical gas-piping systems
shall not be interconnected for testing or any other
reason. Leak testing shall be accomplished by
separately charging and testing the individual piping
system. [NFPA 99 4-3.1.2.10(d)]
1318.11 Piping shall be labeled by stenciling or
adhesive markers that identify the patient medical
gas, the support gas, or vacuum system, and include:
(1) The name of the gas/vacuum system or the
chemical symbol per NFPA 99 Table 5.1.11.
(2) The gas or vacuum system color code per
Table 5.1.11.
(3) Where positive-pressure gas piping systems
operate at pressures other than the standard
gauge pressure in NFPA 99 Table 5.1.11, the
pipe labeling shall include the operating
pressure in addition to the name of the gas.
[NFPA 99 5.1.11.1.1]
1319.0 Joints. This section sets forth the require-
ments for pipe joint installation for positive-pressure
medical gas systems.
1319.1 Brazed joints shall be made using a brazing
alloy that exhibits a melting temperature in excess of
1,000°F (538°C) to retain the integrity of the piping
system in the event of fire exposure. [NFPA 99
5.1.10.5.1.1]
Brazed tube joints shall be the socket type.
[NFPA 99 5.1.10.5.1.2]
Filler metals shall bond with and be
metallurgically compatible with the base metals
being joined. [NFPA 99 5.1.10.5.1.3]
Filler metals shall comply with ANSI/AWS
A.5.8, Specification for Brazing Filler Metal. [NFPA 99
5.1.10.5.1.4]
230
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
Copp.er-to-copper joints shall be brazed using a
copper-phosphorus or copper-phosphorus-silver
brazing filler metal (BCuP series) without flux.
[NFPA 99 5.1.10.5.1.5]
Flux shall ordy be used when brazing dissimilar
metals, such as copper and broiize or brass, using a
silver (BAg series) brazing filler material. [NFPA 99
5.1.10.5.4.1]
Joints to be brazed in place shall be accessible for
necessary preparation, assembly, heating, filler
application, cooling, cleaning, and inspection. [NFPA
99 5.1.10.5.1.7]
1 31 9.2 Tube ends shall be cut square using a sharp
tubing cutter to avoid deforming the tube. [NFPA 99
5.1.10.5.2.1]
The cutting wheels ori tubing cutters shall be
free from grease, oil, or other lubricant not suitable
for oxygen service. [NFPA 99 5.1.10.5.2.2]
The cut ends of the tube shall be deburred with a
sharp, clean deburring tool, taking caire to prevent
chips from entering the tube. [NFPA 99 5.1.10.5.2.3]
1319.3 The interior surfaces of tubes, fittings, and
other componertts that are cleaned for oxygen service
shall be stored and handled to avoid contamination
prior to assembly and brazing. [NFPA 99 5.1.10.5.3.1]
The exterior surfaces of tube ends shall be
; cleaned prior to brazing to remove any surface
oxides. [NFPA 99 5.1.10.5.3.2]
When cleaning the exterior surfaces of tube
ends, no matter shall be permitted to enter the tube.
[NFPA 99 5.1.10.5.3.3]
If the interior surfaces of fitting sockets become
contaminated prior to brazing, they shall be
recleaned for oxygen in accordance with NFPA 99
5.1.10.5.3.10 and be cleaned for brazing with a clean,
oil-free wire brush. [NFPA 99 5.1.10.5.3.4]
I Clean, nonshedding, abrasive pads shall be used
to clean the exterior surfaces of tube ends. [NFPA 99
5.1.10.5.3.5]
The use of steel wool or sand cloth shall be
prohibited. [NFPA 99 5.1.10.5.3.6]
The cleaning process shall not result in grooving
of the surfaces to be joined. [NFPA 99 5.1.10.5.3.7]
After being abraded, the surfaces shall be wiped
using a clean, lint-free white cloth. [NFPA 99
5.1.10.5.3.8]
Tubes, fittings, valves, and other components
shall be visually examined internally before being
joined, to verify that they have not become
contaminated for oxygen service and that they are free
of obstructions or debris. [NFPA 99 5.1.10.5.3.9]
The interior surfaces of tube ends, fittings, and
other components that were cleaned for oxygen
1319.1 - 1319.5
service by the manufacturer, but become
contaminated prior to being installed, shall be
permitted to be recleaned on-site by the installer by
thoroughly scrubbing the interior surfaces with a
clean, hot water-alkaline solution, such as sodium
carbonate or trisodium phosphate 450 g to 11 L (1 lb.
to 3 gal.) of potable water and thoroughly rinsing
them with clean, hot potable water. [NFPA 99
5.1.10.5.3.10]
Other aqueous cleaning solutions shall be
permitted to be used for on-site recleaning permitted
in NFPA 99:5.1.10.5.3.10, provided that they are as
recommended inCGA Pamphlet G-4.1, Cleaning
Equipment for Oxygen Service, and are listed in CGA
Pamphlet 02-DIR, Directory of Cleaning Agents for
Oxygen Service. [NFPA 99 5.1.10.5.3.11]
Material that has become contaminated
internally and is not clean for oxygen service shall
not be installed. [NFPA 99 5.1.10.5.3.12]
Joints shall be brazed within eight hours after
the surfaces are cleaned for brazing. [NFPA 99
5.1.10.5.3.13]
1319.4 Flux shall only be used when brazing
dissimilar metals such as copper and bronze or brass,
using a silver (BAg series) brazing filler metal.
[NFPA 99 5.1.10.5.4.1]
Surfaces shall be cleaned for brazing in
accordance with Section 1319.3. [NFPA 99 5.1.10.5.4.2]
Flux shall be applied sparingly to minimize
contamination of the inside of the tube with flux.
[NFPA 99 5.1.10.5.4.3]
The flux shall be applied and worked over the
cleaned surfaces to be brazed using a stiff bristle
brush to ensure complete coverage and wetting of
the surfaces with flux. [NFPA 99 5.1.10.5.4.4]
Where possible, short sections of copper tube
shall be brazed onto the noncopper component and
the interior of the subassembly shall be cleaned of
flux prior to installation in the piping system. [NFPA
99 5.1.10.5.4.5]
On joints DN20 (NFS 3/4) (7/8 in. O.D.) size
and smaller, flux-coated brazing rods shall be
permitted to be used in lieu of applying flux to the
surfaces being joined. [NFPA 99 5.1.10.5.4.6]
1319.5 Tube ends shall be inserted fully into the
socket of the fitting. [NFPA 99 5.1.10.5.6.1]
Where flux is permitted, the joint shall be heated
slowly until the flux has liquefied. [NFPA 99
5.1.10.5.6.2]
After flux is liquefied, or where flux is not
permitted to be used, the joint shall be heated quickly
to the brazing temperature, taking care not to overheat
the joint. [NFPA 99 5.1.10.5.6.3]
231
1319.5-1320.1
2007 CALIFORNIA PLUMBING CODE
Techniques for heating the joint; applying the
brazing filler metal; and making horizontal,
vertical, and large-diameter joints shall be as stated
in sections on Applying Heat and Brazing and
Horizontal and Vertical Joints in Chapter VII,
Brazed Joints, in the CDA Copper Tube Handbook.
[NFPA 99 5.1.10.5.6.4]
1 31 9.6 When being brazed, joints shall be continuously
purged with oil-free, dry nitrogen MP to prevent the
formation of copper oxide on the inside surfaces of
the joint. [NFPA 99 5.1.10.5.5.1]
The source of the purge gas shall be monitored,
and the installer shall be audibly alerted when the
soxirce content is low. [NFPA 99 5.1.10.5.5.2]
The purge gas flow rate shall be controlled by
the use of a pressure regulator and flow meter or
combination thereof. [NFPA 99 5.1.10.5.5.4]
Pressure regulators alone shall not be used to
control purge gas flow rates. [NFPA 99 5.1.10.5.5.4]
In order to ensure that all ambient air has been
removed from the pipeline prior to brazing, an
oxygen analyzer shall be used to verify the
effectiveness of the purge. The oxygen analyzer shall
read below 1 percent oxygen concentration before
brazing is to begin. [NFPA 99 5.1.10.5.5.5]
During and after installation, openings in the
piping system shall be kept sealed to maintain a
nitrogen atmosphere within the piping to prevent
debris or other contaminants from entering the
system. [NFPA 99 5.1.10.5.5.6]
While a joint is being brazed, a discharge
opening shall be provided on the opposite side of the
joint from where the purge gas is being introduced.
[NFPA 99 5.1.10.5.5.7]
The flow of purge gas shall be maintained imtil
the joint is cool to the touch. [NFPA 99 5.1.10.5.5.8]
After the joint has cooled, the purge discharge
opening shall be sealed to prevent contamination of
the inside of the tube and maintain the nitrogen
atmosphere within the piping system. [NFPA 99
5.1.10.5.5.9]
The final connection of new piping to an
existing, in-use pipeline shall be permitted to be
made without the use of a nitrogen purge. [NFPA 99
5.1.10.5.5.10]
After a final coimection in a positive-pressure
medical gas pipeline is made without a nitrogen
purge, an outlet in the immediate downstream zone
of the affected portions of both the new and existing
in-use piping shall be tested in accordance with
NFPA 99: 5.1.12.3,9, Final Tie-in Test. [NFPA 99
5.1.10.5.5.11]
When using the autogenous orbital welding
process, joints shaU be continuously purged inside
and outside with inert gas(es) in accordance with
the qualified welding procedure. [NFPA 99
5.1.10.5.5.12]
1319.7 After brazing, the outside of all joints shall
be cleaned by washing with water and a wire brush
to remove any residue and permit clear visual
inspection of the joint. [NFPA 99 5.1.10.5.7.1]
Where flux has been used, the wash water shall
be hot. [NFPA 99 5.1.10.5.7.2]
Each brazed joint shall be visually inspected
after cleaning the outside surfaces. [NFPA 99
5.1.10.5.7.3]
Joints exhibiting the following conditions shall
not be permitted:
(1) Flux or flux residue (when flux or flux-
coated BAg series rods are used with
dissimilar metals).
(2) Base metal melting or erosion.
(3) Untnelted filler metal.
(4) Failure of the filler metal to be clearly visible
all the way aroimd the joint at the interface
between the socket and the tube.
(5) Cracks in the tube or component.
(6) Cracks in the brazed filler metal.
(7) Failure of the joint to hold the test pressure
under the installer-performed initial
pressure test (1329.10) and standing pressure
test (Section 1329.11). [NFPA 99 5.1.10.5.7.4 ]
Brazed joints that are identified as defective
under conditions 1319.7(2) or (5) shall be replaced.
[NFPA 99 5.1.10.5.7.5]
Brazed joints that are identified as defective
under Sections 1319.7(1), (3), (4), (6), or (7) shall be
permitted to be repaired, except that no joint shall be
reheated more than once before being replaced.
[NFPA 99 5.1.10.5.7.6]
1320.0 Valves - Requirements, Locations, and
Labeling.
1320.1 General Requirements. Shutoff valves
accessible to other than authorized persoimel shall
be installed in valve boxes with frangible or
removable windows large enough to permit manual
operation of valves. [NFPA 99 5.1.4.2.1]
Shutoff valves for use in certain areas, such as
psychiatric or pediatric, shall be permitted to be
secured with the approval of the Authority Having
Jurisdiction to prevent inappropriate access. [NFPA
99 5.1.4.2.2]
1320.1.1 Where valves are concealed in any
232
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
enclosure, the door or entry to the enclosure
shall be identified and color coded with the type
of gas service installed, as described in Section
1323.0. Enclosures shall be of sufficient size to
permit valve operation. Valve handles in the off
position shall prevent closure of the access panel
or door.
1320.2 In-line shutoff valves intended for use to
isolate piping for maintenance or modification shall
meet the following requirements:
(1) Be located in a restricted area.
(2) Be locked or latched open.
(3) Be identified in accordance with Section
1323. [NFPA 99 5.1.4.9.1]
1 320.3 Shutoff valves provided for the connection of
future piping shall meet the following requirements:
(1) Be locked in a restricted area.
(2) Be locked or latched closed.
(3) Be identified in accordance with Section
1323. [NFPA 99 5.1.4.10]
1320.3.1 Future connection valves shall be
labeled as to gas content. [NFPA 99 5.1.4.10.1]
1320.3.2 Downstream piping shall be closed
with a brazed cap with tubing allowance for
cutting and rebrazing. [NFPA 99 5.1.4.10.2]
1320.3.3 A zone valve shall be located
immediately outside each vital life-support,
critical care, and anesthetizing location in
each medical gas and/or vacuum line, and
located so as to be readily accessible in an
emergency. [NFPA 99 5.1.4.8.7]
1320.3.4 AH gas-delivery columns, hose reels,
ceiling tracks, control panels, pendants,
booms, or other special installations shall be
located downstream of the zone valve. [NFPA
99 5.1.4.8.7.1]
1 320.3.5 Zone valves shall be so arranged that
shutting off the supply of gas to any one
operating room or anesthetizing location will
not affect the others. [NFPA 99 5.1.4.8.7.2]
1320.4 Source Valve. A shutoff valve shall be
placed at the immediate connection of each source
system to the distribution piping to permit the entire
source, including all accessory devices (such as hair
dryers, final line regulators, etc.), to be isolated from
the facility. [NFPA 99 5.1.4.4]
1320.4.1 The source valve shall be located in the
immediate vicinity of the source equipment.
[NFPA 99 5.1.4.4.1]
1320.4.2 The source valve shall be labeled in
accordance with Section 1323.0, Source Valve for
the (Source Name). [NFPA 99 5.1.4.4.2, 5.1.11.2.3]
1320.1 -1320.8
1 320.5 Main Valve. A shutoff valve shall be provided
in the main supply line inside of the buUding, except
where one or more of the following conditions exist:
(1) The source and source valve are located
inside the building served.
(2) The source system is physically motmted to
the waU of the buUding served and the pipe-
line enters the building in the immediate
vicinity of the source valve. [NFPA 99 5.1.4.5]
1320.5.1 The main line valve shall be located to
permit access by authorized persormel only (i.e.,
by locating above a ceiling or behind a locked
access door). [NFPA 99 5.1.4.5.1]
1320.5.2 The main line valve shall be located on
the facility side of the source valve and outside of
the source room, enclosure, or where the main
line first enters the building. [NFPA 99 5.1.4.5.2]
1320.5.3 The main line shall be labeled in
accordance with Section 1323.0. [NFPA 99
5.1.4.5.3 and 5.1.11.2.4]
1320.6 Riser Valve. Each riser supplied from the
main line shall be provided with a shutoff valve
adjacent to the riser connection. Riser valves shall be
permitted to be located above ceilings, but shall
remain accessible and not be obstructed. [NFPA 99
5.1.4.6, 5.1.4.6.1]
1320.7 Zone Valve. All station outlets/inlets shall
be supplied through a zone valve as follows:
(1) The zone valve shall be placed such that a
wall intervenes between the valve and
outlets /inlets that it controls.
(2) The zone valve shaU serve only outlets/inlets
located on that same story.
1320.7.1 Zone valves shall be readily operable
from a standing position in the corridor on the
same floor they serve. [NFPA 99 5.1.4.8.1]
1320.7.2 Zone valves shall be so arranged that
shutting off the supply of medical gas or
vacuum to one zone will not affect the supply of
medical gas or vacuum to another zone or the
rest of the system. [NFPA 99 5.1.4.8.2]
1320.8 Service Valves. Service valves shall be
placed in the branch piping prior to any zone valve
box assembly on that branch. [NFPA 99 5.1.4.7.2]
1320.8.1 Only one service valve shall be
required for each branch off of a riser regardless
of how many zone valve boxes are installed on
that lateral. [NFPA 99 5.1.4.7.1]
1320.8.2 Service valves shaU be installed to allow
servicing or modification of lateral branch piping
from a main or riser without shutting down the
entire main, riser, or facility. [NFPA 99 5.1.4.7]
233
1321.0-1323.4
2007 CALIFORNIA PLUMBING CODE
1321.0 Pressure-Regulating Equipment.
1321.1 Pressure-regulating equipment shall be
installed in the supply main upstream of the final
line-pressure valve. Where multiple piping systems
for the same gas at different operating pressures are
required, separate pressure-regulating equipment,
relief valves, and source shutoff valves shall be
provided for each pressure.
1321.2 Each central supply system shall have a
pressure-relief valve set at fifty (50) percent above
normal line pressure, installed downstream of the
pressure regulator and upstream of any shutoff
valve. This pressure-relief valve shall be permitted to
be set at a higher pressure, provided another
pressure-relief valve set at 50 percent above normal
line pressure is installed in the main supply line.
1321.2.1 All pressure-relief valves shall close
automatically when excess pressure has been
released.
1321.2.2 Pressure-relief valves set at 50 percent
shall be vented to the outside from all gas
systems, except medical air, or if the total
capacity of the supply system is in excess of
3,000 feet^ (85 m^) of gas.
1 321 .2.3 Pressure-relief valves shall be of brass
or bronze and specially designed for the gas
service involved.
1321.2.4 A pressure-relief valve shall not be
isolated from its intended use by any valve.
1321.3 Pressure Gauges.
Pressure and vacuum indicators shall be readable
from a standing position. Pressure/vacuum
indicators shall be provided at the following
locations, as a minimum:
(1) Adjacent to the alarm-initiating device for
source main-line pressure and vacuum alarms
in the master alarm system.
(2) At or in area alarm panels to indicate the
pressure/vacuum at the alarm activating
device for each system that is monitored by
the panel.
(3) On the station outlet/inlet side of zone
valves. [NFPA 99 5.1.8.2.1, 5.1.8.2.2]
1322.0 Station Outlets/Inlets.
Station outlets and inlets shall be installed in strict
accordance with the manufacturers' instructions.
1322.1 After installation of the piping, but before
installation of the station outlets /inlets and other
medical gas and medical gas system components
(e.g., pressure-actuating switches for alarms,
manifolds, pressure gauges, or pressure relief
valves), the line shall be blown clear by means of oil-
free, dry nitrogen.
1323.0 Labeling and Identification. The gas content
of medical gas piping systems shall be readily
identifiable by appropriate labeling with the name
and pressure contained. Such labeling shall be by
means of metal tags, stenciling, stamping, or
adhesive markers, in a maimer that is not readily
removable. Where supplementary color identification
of piping is used, it shall be in accordance with the
gases and colors indicated in CGA Pamphlet C-9,
Standard Color-Marking of Compressed Cylinders
Intended for Medical Gas Use, See Table 13-1.
1323.1 Piping shall be labeled by stenciling or
adhesive markers that identify the medical gas,
support gas, or vacuum system and include:
(1) The name of the gas/vacuiun system or the
chemical symbol per NPPA 99 Table 5.1.11.
(2) The gas or vacuum system color code per
NFPA 99 Table 5.1.11.
(3) Where positive-pressure gas piping systems
operate at pressures other than the standard
gauge in NFPA 99 Table 5.1.11, the pipe
labeling shall include the operating
pressure in addition to the name of the gas.
[NFPA 99 5.1.11.1.1]
Pipe labels shall be located as follows:
(1) At intervals of not more than 20 ft (6,100 mm).
(2) At least once in or above every room.
(3) On both sides of walls or partitions penetrated
by the piping.
(4) At least once in every story height traversed
by risers. [NFPA 99 5.1.11.1.2]
1 323.2 Shutoff valves shall be identified as foUows:
(1) The name or chemical symbol for the
specific medical gas or vacuum system.
(2) The room or areas served.
(3) A caution to not close or open valve except
in emergency. [NFPA 99 5.1.11.2.1]
1 323.3 Station outlets and inlets shall be identified as
to the name or chemical symbol for the specific
medical gas or vacuum provided. [NFPA 99
5.1.11.3.1]
1 323.4 The shutoff valves described in Sections
1320.4, 1320.5, and 1320.6 shall be labeled to reflect
the rooms that are controlled by such valves.
Labeling shall be kept current from initial
construction through acceptance. Valves shall be
labeled in substance as follows:
In-line shutoff valves shall be labeled in substance
as follows:
CAUTION
(NAME OF MEDICAL GAS) VALVE
DO NOT CLOSE EXCEPT IN EMERGENCY
THIS VALVE CONTROLS SUPPLY TO...
234
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
Source valves shall be labeled in substance as
follows:
SOURCE VALVE
FOR THE (SOURCE NAME).
Main line valves shall be labeled in substance as
follows:
MAIN LINE VALVE FOR THE
(GAS/VACUUM NAME) SERVING THE
(NAME OF BUILDING).
Riser valve(s) shall be labeled in substance as
follows:
RISER FOR THE (GAS/VACUUM NAME)
SERVING (NAME OF THE AREA/BUILDING
SERVED BY THE PARTICULAR RISER).
Service valve(s) shall be labeled in substance as
follows:
SERVICE VALVE FOR THE
(GAS/VACUUM NAME) SERVING
(NAME OF THE AREA/BUILDING
SERVED BY THE PARTICULAR VALVE).
[NFPA 99 5.1.11.2.1]
1324.0 Alarms. All master, area, and local alarm
systems used for medical gas and vacuum systems
shall include the following:
(1) Separate visual indicators for each condition
monitored, except as permitted for local
alarms that are displayed on master alarm
panels.
(2) Visual indicators that remain in alarm until
the situation that has caused the alarm is
resolved.
(3) A cancelable audible indication of each
alarm condition that produces a sound
with a minimum level of 80 dBA at 3 feet
(920 mm).
(4) A means to visually identify a lamp or LED
failure.
(5) Visual and audible indication that the
wiring to an alarm initiating device is
discormected.
(6) Labeling of each indicator, indicating the
condition monitored.
(7) Labeling of each alarm panel for its area of
surveillan.ce.
(8) Re-initiation of the audible signal if another
alarm condition occurs while the audible
alarm is silenced.
(9) Power for master and area alarms from the
1323.4-1325.1
life safety branch of the emergency electrical
system as described in Chapter 4, Electrical
Systems.
(10) Power for local alarms, dew point sensors,
and carbon monoxide sensors permitted to
be from the same essential electrical branch
as is used to power the air compressor
system.
(11) Wiring from switches or sensors that is
supervised or protected as required by
Section 517.30(C)(3) of NFPA 70, National
Electrical Code, for emergency system circuits.
(12) Assurance by the responsible authority of
the facUity that the labeling of alarms, where
room numbers or designations are used, is
accurate and up-to-date.
(13) Provisions for automatic restart after a power
loss of 10 seconds (e.g., during generator
startup) without giving false signals or
requiring manual reset. [NFPA 99 5.1.9.1(1),
(3), (4), (5), (6), (7)]
1324.1 Functioning of all alarm components shall be
verified in accordance with testing and monitoring
requirements of the manufacturer and the Authority
Having Jurisdiction.
1325.0 Medical Air System. Medical air
compressors shall be installed in a w;ell-lit,
ventilated, and clean location and shall be accessible.
The location shall be provided with drainage
facilities. The medical air compressor area shall be
located separately from medical gas cylinder system
sources, and shall be readily accessible for
maintenance.
1325.1 Medical air compressors shall be sufficient to
serve the peak calculated demand with the largest
single compressor out of service. In no case shall
there be fewer than 2 (two) compressors. [NFPA 99
5.1.3.5.11.2]
Medical air compressor systems shall consist of the
following:
(1) Components complying with NFPA 99
5.1.3.5.4 through NFPA 99 5.1.3.5.10, arranged
per NFPA 99 5.1.3.5.11.
(2) An automatic means to prevent backflow
from all on-cycle compressors through all
off-cycle compressors.
(3) A manual shutoff valve to isolate each
compressor from the centrally piped system
and from other compressors for maintenance
or repair without loss of pressure in the system.
(4) Intake filter-mufflers of the dry type.
(5) Pressure relief valves set at 50 percent above
line pressure.
235
1325.1 -1326.1
2007 CALIFORNIA PLUMBING CODE
(6) Piping between the compressor and the source
shutoff valve compatible with oxygen that
does not contribute to contaminant levels.
[NFPA 99 5.1.3.5.3.2]
(7) Except as defined in NFPA 99 5.1.3.5.3.2(1)
through NFPA 99 5.1.3.5.3.2(6), materials
and devices used between the medical air
intake and the medical air source valve shall
be permitted to be of any design or construc-
tion appropriate for the service, as determined
by the man-ufacturer. [NFPA 99 5.1.3.5.3.2]
1 325.2 The medical air compressors shall draw their
air from a source of clean air located where no
contamination is anticipated from engine exhausts,
fuel storage vents, medical-surgical vacuum system
discharges, particulate matter, or odor of any type.
[NFPA 99 5.1.3.5.13.1]
1 325.3 Compressor intake piping shall be hard-
drawn seamless copper, and one of the following:
(1) ASTM B 819, Standard Specification for
Seamless Copper Tube for medical Gas
Systems, medical gas tube.
(2) ASTM B 88, Standard Specification for
Seamless Copper Water Tube, water tube
(Type K or L).
(3) ASTM B 280, Standard Specification for Seam-
less Copper Tubing for Air Conditioriing and
Refrigeration Field Service, 280ACR tube.
[NFPA 99 5.1.3.5.13.4]
The compressor air intake shall be located
outdoors above roof level, at a minimum distance of
10 feet (3,050 mm) from any door, window, exhaust,
other intake, or opening in the building and a
minimum distance of 6,100 mm (20 feet) above the
ground. [NFPA 99 5.1.3.5.13.2]
If an air source equal to or better than outside air
(e.g., air already filtered for use in operating room
ventilating systems) is available, it shall be permitted
to be used for the medical air compressors with the
following provisions:
(1) This alternate source of supply air shall be
available on a continuous 24-hours-per-day,
7-days-per-week basis.
(2) Ventilating systems having fans with motors
or drive belts located in the air stream shall
not be used as a source of medical air intake.
[NFPA 99 5.1.3.5.13.3]
Air intakes for separate compressors shall be
permitted to be joined together to one common
intake where the following conditions are met:
(1) The common intake is sized to minimize
back pressure in accordance with the
manufacturer's recommendations
(2) Each compressor can be isolated by manual
or check valve, blind flange, or tube cap to
prevent open inlet piping when compressors
are removed from service and consequent
backflow of room air into the other com-
pressor(s). [NFPA 99 5.1.3.5.13.5]
1 325.3.1 Each medical air compressor shall have
an isolation valve installed so that shutting off or
failure of the largest unit will not affect the
operation of the other urut(s).
1325.4 Drains shall be installed on dryers,
aftercoolers, separators, and receivers.
1325.5 Medical air receivers shall be provided with
proper valves to allow the flow of compressed air to
enter and exit out of separator receive ports during
normal operation and allow the receiver to be by-
passed during service, without shutting down the
medical air system. [NFPA 99 5.1.3.5.11.4]
1325.6 Medical Air Receivers. Receivers for
medical air shall meet the following requirements:
(1) Be made of corrosion-resistant materials or
otherwise be made corrosion resistant.
(2) Comply with Section VIII, Unfired Pressure
Vessels, of the ASME Boiler and Pressure
Vessel Code.
(3) Be equipped with a pressure-relief valve,
automatic drain, manual drain, sight glass,
and pressure indicator.
(4) Be of a capacity sufficient to prevent the
compressor from short cycling. [NFPA 99
5.1.3.5.6]
Piping within compressor systems upstream
of the source shutoff valve shall comply with
Sections 1316 and 1319, except that stainless steel
shall be permitted to be used as a piping
material.
1326.0 lUledical Vacuum Pump System. The
vacuum plant shall be installed in a well-lit,
ventilated, and clean location with ample accessibility.
The location shall be provided with drainage facilities.
The vacuum plant, when installed as a source, shall be
located separately from other medical vacuimi system
sources, and shall be readily accessible for
maintenance.
1326.1 Medical-surgical vacuum sources shall
consist of the following:
(1) Two or more vacuum pumps sufficient to
serve the peak calculated demand with the
largest single vacuum pump out of service.
(2) An automatic means to prevent backflow
from any on-cycle vacuum pumps through
any off-cycle vacuum pumps.
236
HEALTH CARE FACILITIES AND
MEDICAL GAS AND VACUUM SYSTEMS
(3) A shutoff valve or other isolation means to
isolate each vacuum pump from the
centrally piped system and other vacuum
pumps for maintenance or repair without
loss of vacuum in the system. [NFPA 99
5.1.3.6.1.2(1), (2), (3)]
, (4) A vacuum receiver.
(5) Piping betv^reen the vacuum pump(s),
discharge(s), receiver(s), and the vacuum
source shutoff valve shall be in accordance
with 5.1.10.2, except that stainless, galvanized,
or black steel pipe shall be permitted to be used.
(6) Except as defined in NFPA 99 5.1.3.6.1.2(1)
through NFPA 99 5.1.3.6.1.2(5), materials
and devices used between the medical
vacuum exhaust and the medical vacuum
source shall be permitted to be of any design
or construction appropriate for the service,
as determined by ttie manufacturer. [NFPA
99 5.1.3.6.1.2(1), (2), (3), (4), (5), (6)]
1326.1.1 Additional pumps shall automatically
activate when the pumps in operation are
incapable of adequately maintaining the
required vacuum.
Automatic or manual alternation of pumps
shall allow division of operating time. If
automatic alternation of pumps is not provided,
the facility staff shall arrange a schedule for
manual alternation. [NFPA 99 5.1.3.6.6.1,
5.1.3.6.6.2]
1326.2 The medical-surgical vacuum pumps shall
exhaust in a manner and location that will minimize
the hazards of noise and contamination to the facility
and its environment.
The exhaust shall be located as follows:
(1) Outdoors.
(2) At least 10 feet (3,050 mm) from any door,
window, air intake, or other openings in
buildings.
(3) At a level different from air intakes.
(4) Where prevailing winds, adjacent buildings,
topography, or other irifluences that would
not divert the exhaust into occupied areas or
prevent dispersion of the exhaust.
The end of the exhaust shall be turned down
and screened or otherwise be protected against
the entry of vermin, debris, or precipitation by
screening fabricated or composed of a non-
corroding material
The exhaust shall be piped of materials
approved for medical-surgical vacuum piping
under Section 1316.3 (Vacuum tubes).
The exhaust shall be free of dips and loops
that might trap condensate or oil. Where such
1326.1 -1327.1
low points are unavoidable, a drip leg and
valved drain shall be installed. [NFPA 99
5.1.3.6.7.1 - .5]
1326.2.1 Vacuum exhausts from multiple
pumps shall be permitted to be joined together
to one common exhaust where the following
conditions are met:
(1) The common exhaust is sized to
minimize back-pressure in accordance
with the pump manufacturer's recom-
mendations.
(2) Each pump can be isolated by manual
or check valve, blind flange, or tube cap
. to prevent open exhaust piping when
pumps are removed for service and
consequent flow of exhaust air into the
room. [NFPA 99 5.1.3.6.7.6]
1326.3 Receivers for vacuum shall meet the
following requirements:
(1) Be made of ferrous and/or nonferrous
materials.
(2) Comply with Section VIII, Unfired Pressure
Vessels, of the ASME Boiler and Pressure
Vessel Code.
(3) Be capable of withstanding a gauge pressure
of 415 kPa (60 psi) and 29.9 inch (760 mm)
gauge HgV.
(4) Be equipped with a manual drain.
(5) Be of a capacity based on the technology of
the pumps. [NFPA 99 5.1.3.6.3]
1326.4 Piping between vacuum pumps, discharges,
receivers, and the vacuum main line valve shall be in
accordance with Section 1316.1, except that steel pipe
shall be permitted to be either black or galvanized.
1326.5 Drains shall be installed and terminate in an
approved location.
1327.0 Testing and Inspection.
1327.1 Inspection and testing shall be performed on
all-new piped gas systems, additions, renovations,
temporary installations, or repaired systems, to
ensure the facility, by a documented procedure, that
all applicable provisions of this document have been
adhered to and system integrity has been achieved
or maintained. [NFPA 99 5.1.12.1.1.]
1327.1.1 Tests and inspections required by this
section shall not be interpreted to conflict with
the requirements of NFPA 99 Standard for Health
Care Facilities. Final certification or verification
shall require the completion of all tests and
inspections required by Sections 4-3.4.1.1, 4-
3.4.1.2, and 4-3.4.1.3 of NFPA 99 Standard for
Health Care Facilities. For requirements of the
portions of medical gas and medical vacuum
237
1327.1-1327.9
2007 CALIFORNIA PLUMBING CODE
systems testing and inspection not addressed in
this chapter or medical gas and medical vacuum
systems testing and inspection beyond the scope
of this chapter, refer to NFPA 99 Standard for
Health Care Facilities.
1327.2 All systems that are breached and com-
ponents that are subject to additions, renovations, or
replacement (e.g., new gas sources: bulk, manifolds,
compressors, dryers, alarms) shall be inspected and
appropriately tested. [NFPA 99 5.1.12.1.3]
1327.2.1 Systems shall be deemed breached at
the point of pipeline intrusion by physical
separation or by system component removal,
replacement, or addition.
Breached portions of the systems subject to
inspection and testing shall be confined to only
the specific altered zone and components in the
immediate zone or area that is located
upstream for vacuum systems and down-
stream for pressure gases at the point or area of
intrusion. [NFPA 99 5.1.12.1.4, 5.1.12.1.5]
1327.3 Advance Notice. It shall be the duty of the
person doing the work authorized by the permit to
notify the Authority Having Jurisdictio 
