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Full text of "Massachusetts Plumbing Code"


THE COMMONWEALTH OF MASSACHUSETTS 

William Francis Galvin, Secretary of the Commonwealth 

REGULATiOM FBLING AND PUBLDCATDON 



1. Regulation Chapter, Number & Heading: 



248 C^R 



2 Nameof Apencv BOARD OF STATE EXAMINERS OF 

PLUi¥IBERS & GAS FITTERS 

3. This document is reprinted from the Code of Massachusetts Regulations and contains the following: 



248 CMR 1 „00-2=00 RESERVED 




3=00 GENERAL PROV8S80NS GOVERNING THE CONDUCT OF PLUIVIBING AND 
GAS WORK PERFORMED IN THE COMMONWEALTH 



4.00 BNTRODUCTiON & MASSACHUSETTS MODIFflCATIONS 

5=00 AMENDMENTS TO 2002 EDITION OF ANSI Z223 J =NFPA54 

6.00 RESERVED 

7,00 MASSACHUSETTS CODE FOR GAS UTIUZATION EQUIPMENT IN LARGE 
BOILERS 

10.00 UNIFORM STATE PLUMBING CODE 

11 .00 EDUCATION AND EXPERIENCE STANDARDS AND REQUIREMENTS FOR 

LICENSURE 

Under the Provisions of Massachusetts General Laws, Chapter 30A, § 6, and Chapter 233, § 75, 
this document may be used as evidence of the original documents on file with the Secretary of the Commonwealth 



Compiled as in full force and effect: 



PLUMBING CODES-12.30.85AIII 
PLUriBINGCODE 

llllllllllllll f 25.00 

10048G ^ <fe V B w w 



7/13/2007 



A true copy attest: 



WILLIAM FRANCIS GALVIN 
Secretary of the Commonwealth 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Table of Contents 



(248 CMR 1.00 AND 2.00: RESERVED) 

248 CMR 3.00: GENERAL PROVISIONS GOVERNING THE CONDUCT OF 
PLUMBING AND GAS WORK PERFORMED IN THE 
COMMONWEALTH 

Section 3.01: Scope and Application 

Section 3.02: Definitions 

Section 3.03: Licenses and Registration 

Section 3.04: Product, Design, and Testing Standards 

Section 3.05: Permits and Inspections 

Section 3.06: Grounds for Imposition of Disciplinaiy Sanctions 

Section 3.07: Complaint Handling Process 



Page 
5 



11 
11 
13 
14 
17 
21 
22 



248 CMR 4.00: INTRODUCTION AND MASSACHUSETTS MODIFICATIONS 

Section 4.01 : Scope and Purpose 

Section 4.02: Definitions 

Section 4.03; Adoption of Relevant Codes and Overview of Modifications 

248 CMR 5.00: AMENDMENTS TO 2002 EDITION OF ANSI Z223. 1-NFPA 54 



Section 5,01: 
Section 5.02: 
Section 5.03: 
Section 5.04: 
Section 5.05: 
Section 5.06: 
Section 5.07: 
Section 5.08: 
Section 5.09; 



Scope and 
248 CMR 
248 CMR 
248 CMR 
248 CMR 
248 CMR 
248 CMR 
248 CMR 
248 CMR 



Purpose 

5.02 Modifications 

5.03 Modifications 

5.04 Modifications 

5.05 Modifications 

5.06 Modifications 

5.07 Modifications 

5.08 Modifications 

5.09 Modifications 



to sections of NFPA-54, Chapter 1 
to sections of NFPA-54, Chapter 5 
to NFPA-54, Chapter 6 
to NFPA-54, Chapter 7 
to NFPA-54, Chapter 8 
to NFPA-54, Chapter 9 
to NFPA-54, Chapter 10 
to NFPA-54, Chapter 11 



(248 CMR 6.00; RESERVED) 



248 CMR 7 .00: MASSACHUSETTS CODE FOR GAS UTILIZATION 
EQUIPMENT IN LARGE BOILERS 

Section 7.01 ; Scope and Purpose 

Section 7.02: Definitions 

Section 7.03: General Provisions 

Section 7,04; Installation of Burners and Controls 

Section 7.05: Initial Start-up and Final Adjustments 

(248 CMR 8.00 AND 9.00; RESERVED) 

248 CMR 10.00: UNIFORM STATE PLUMBING CODES 



Section 10:01 
Section 10.02 
Section 10.03 
Section 10.04 
Section 10.05 
Section 10.06 
Section 10.07 



Scope and Jurisdiction 

Basic Principles 

Definitions 

Testing and Safety 

General Regulations 

Materials 

Joints and Connections 



25 

25 
25 
25 

31 

31 
31 
31 
37 
38 
38 
40 
43 
44 

45 



47 

47 
47 
50 
52 
64 

37 

81 

81 
81 
84 
95 
97 
101 
134 



12/30/05 



248 CMR - 1 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Table of Contents 



Page 



248 CMR 10.00: UNIFORM STATE PLUMBING CODE (continued) 




Section 10.08 


Traps and Cleanouts 


138 


Section 10.09 


Interceptors, Separators, and Holding Tanks 


142 


Section 10.10 


Plumbing Fixtures 


147 


SectionlO.il 


Hangers and Supports 


159 


Section 10.12 


Indirect Waste Piping 


160 


Section 10.13 


Piping and Treatment of Special Hazardous Wastes 


163 


Section 10,14 


Water Supply and the Water Distribution System 


170 


Section 10.15 


Sanitary Drainage System 


187 


Section 10.16 


Vents and Venting 


194 


Section 10.17 


Storm Drains 


202 


Section 10.18 


Hospital Fixtures 


205 


Section 10.19 


Plumbing in Manufactured Homes and Construction Trailers 


213 


Section 10.20 


Public and Semi-public Swimming Pools 


213 


Section 10.21 


Boiler Blow-off Tank 


215 


Section 10.22 


Figures 


216 


Section 10.23 


Vacuum Drainage System 


243 


248 CMR 11. < 


30: EDUCATION AND EXPERIENCE STANDARDS AND 






REQUIREMENTS FOR LICENSURE 


253 


Section 11.01 


Scope and Application 


253 


Section 11.02 


Education and Experience Requirements for Apprentices, 





Journeyman and Master Licensees; Education and Experience 

Requirements for Undiluted Liquefied Petroleum Gas Installers 

and Limited Undiluted Liquefied Petroleum Gas Installers 253 

Section 1 1.03: Application Requirements and Examination Administration 261 

Section 1 1 .04; Mandatory Continuing Education (MCE) Requirements for 

Master and Journeymen Plumbers, Master and Journeyman 
Gasfitters and for Undiluted Liquefied Petroleum Gas Listallers 262 

Section 1 1 .05: Qualifications and Requirements for Mandatory Continuing 

Education Providers and Instructors 264 

Section 1 1.06: Education Hour and Course Content Requirements to be 

Administered by Public, Private, Proprietary or Other 
Occupational Trade Schools 266 



(PAGES 3 AND 4 ARE RESERVED FOR FUTURE USE.) 



7/13/07 



248 CMR - 2 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(248 CMR 1.00 AND 2.00: RESERVED) 



3/11/05 248,CMR-5 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(PAGES 7 THROUGH 10 ARE RESERVED FOR FUTURE USE.) 




3/11/05 248 CMR -6 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 3.00: GENERAL PROVISIONS GOVERNING THE CONDUCT OF PLUMBING AND 
GAS WORK PERFORMED IN THE COMMONWEALTH 



Section 



3.01 
3.02 
3.03 
3.04 
3.05 
3.06 
3.07 



Scope and Application 

Definitions 

Licenses and Registration 

Product, Design, and Testing Standards 

Permits and Inspections 

Grounds for Imposition of Disciplinary Sanctions 

Complaint Handling Process 



3.01 : Scope and Application 



(1) Scop e. The provisions of 248 CMR 3.00 govern the administrative requirements regarding 
the constiiiction, removal, alteration, repair, and Inspection of all plumbing and gas fitting work 
pursuant to M.G.L. c. 142, §§ 13 and 21. 248 CMR 3.00 also governs the administrative 
functions of the Board in sanctioning Licensees and Apprentices who engage in the construction, 
alteration, repair and Inspection of plumbing -and gas fitting work pursuant to M.G.L. c. 142, 
§§ 13 and 21, and M.G.L. c. 112, §61. 

(2) Sections Declared Independent . Each Section of 248 CMR 1.00 through 10.00 and every 
part of each Section is hereby declared to be an independent Section and part of Section and the 
holding of any Section or part of Section to be void and ineffective for any cause shall not be 
deemed to affect any other Section or part of Sections. 



3.02: Definitions 



For the purpose of 248 CMR 3.00 through 10.00 the following tenns shall have the meanings 
indicated in 248 CMR 3:02. No attempt is made to define ordinary words that are used in 
accordance with their established dictionary meaning except where it is necessary to define their 
meaning to avoid misunderstanding. 

Apprentice Gas Fitter . A person who is learning and working at the business of gas fitting under 
the direct supervision of a master gas fitter or journeyman gas fitter. 

A pprentice Plumber . A person who is learning and working at the business of plumbing under 
the direct supervision of a master plumber. 

Approved-testine-lab . A testing laboratory that may perform tests on plumbing and gas fitting 
products or systems because the Board has granted Initial-approved-testing-lab status or 
Extended-approved-testirig-lab status pursuant to 248 CMR 3.04(1). 

Board . State Board of Examiners of Plumbers and Gas Fitters as established in M.G.L. c. 13, 
§ 36 and defined as the Examiners in M.G.L. c. 142, § 1. 

Code . 248 CMR 3.00 through 10.00, subsequent amendments thereto, or and any emergency 
rule or regulation that the Board promulgates. 

Executive Director . The Executive Secretary of the Board as provided for in M.G.L. c. 1 13, 
§ 36. 

Generally Accepted Standard . A specification, code, rule, guide, or procedure in the field or 
construction or related thereto, recognized and accepted throughout the plumbing and gas fitting 
profession as authoritative. 



3/11/05 248 CMR -U 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.02: continued 




Inspector . Either the Local Inspector or the State Inspector, as determined in 248 CMR 
3.05(l)(a), who is responsible for granting or denying Permit applications and performing 
Inspections of plumbing or gas fitting work. 

Inspection . The Inspector's act of reviewing plumbing or gas fitting workmanship for 
compliance with the provisions of 248 CMR. The Inspector may require a test be completed as 
part of his or her review. 

Licensee . A person duly holding a license issued by the Board. 

Local Inspector . The inspector of plumbing and gas fitting who is appointed by the building 
inspector or mayor of each city and town in the Commonwealth pursuant to M.G.L.c. 142, §§ 11 
and 12 and who administers and enforces the provisions of 248 CMR 3.00 through 10.00. 

Journeyman Gas Fitter . A person who by herself or himself does any work in gas fitting wherein 
the gas fitting work is subject to Inspection under any law, ordinance, by law, rule or regulation. 

Journeyman Plumber . A person who by herself or himself does any work in plumbing and gas 
fitting wherein the plumbing and gas. fitting work is subject to Inspection under any law, 
ordinance, by law, rule or regulation. 

Master Gas Fitter . A gas fitter having a regular place of business and who performs gas fitting 
work by himself or herself, or by journeyman or Apprentices in his or her employ. 

Master Plumber . A plumber having a regular place of business and who performs plumbing and 
gas fitting work by himself or herself, or by journeyman or Apprentices in his or her employ. 

May . The word "may" is a permissive term. 

Permit . A written notice that the Inspector grants to a plumber or gas fitter to commence work 
on a given installation. The Permit may contain limitations and conditions of the work to be 
performed. 

Permit Holder . The Licensee who is authorized to be granted a Permit under 248 CMR 
3.05Cl)(b)7. or 248 CMR 3.05(l)(b)8. and who has received a Permit from the Inspector. 

Plumber . Any person duly licensed by the Board, as required by M.G.L. c. 142, as a Master or 
Journeyman Plumber. 

Product-approved fProduct-approval) . A plumbing or gas fitting product that may be installed 
pursuant to 248 CMR 3.00 through 10.00 based on the Board's determination that it meets the 
standards of 248 CMR 3.00 through 10,00. Product or materials that have been granted Product- 
approved status by the Board under 248 CMR 3.04 are listed by the Board as being Product- 
approved. 

Shall . The word "shall" is a mandatory term. 

Special-permission. Explicit permission from the Board that is required before installing certain 
products, materials, or systems because the product, material, or system raise special safety 
considerations. 

State Inspector . A person employed by the Commonwealth of Massachusetts 's Division of 
Professional Licensure who grants Permits and performs Inspections of the plumbing and gas 
fitting work in all state owned, used, leased or constructed buildings that are subject to the 
provisions of M.G.L. c. 142, § 21. 



3/11/05 248 CMR -12 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 




3.02: continued 



Testing-laboratory . A nationally recognized agency, firm, company, or association that is in the 
business of reviewing and testing new products to assure their conformance with applicable 
national standards. 

Test-site . A method, system or technology where the design, construction, installation or 
• implementation of the method, system or technology does not comply with 248 CMR. However, 
upon application to the Board, the Board may allow its use for a specific application so that the 
Board may determine the feasibility and safety of the method, system or technology. 

Variance . A grant from the Board to install or retain a plumbing or gas fitting product, system, 
device or fixture because product, device, or fixture deviates from the requirements in 248 CMR 
because the applicant has established an undue hardship. 

3.03: Licenses and Registration 

(1) Licenses and Registration . 

(a) Master Plumbers, Master Gas Fitters, Journeyman Plumbers, Journeyman Gas Fitters. 

1 . No person shall engage in the business of a Master Plumber or Master Gas Fitter, or 
work as a Journeyman Plumber or Journeyman Gas Fitter nor shall any person solicit, by 
sign, listing or any other form of adveitisement, work regulated or controlled by 
248 CMR or by any ordinance, by-law, rule or regulation made hereunder, unless he is 
lawfully licensed by the Board as provided in 248 CMR 3.00. 

2. Any person so licensed as a Master Plumber or a Journeyman Plumber may: 

a. carry on the work of a plumber or gas fitter regulated under 248 CMR 3.00 
through 10.00, notwithstanding any local ordinance, by-law, rule or regulation to the 
contrary; and 

b. may engage in the work of installing house drainage and connecting with 
common sewers without being required to have any local license therefor, but shall 
be subject to local regulations relative to permits and bonding requirements. 

3. Any person so licensed as a Master Gas Fitter or a Journeyman Gas Fitter may carry 
on the work of a gas fitter that is regulated under 248 CMR 3.00 through 7.00, 
notwithstanding any local ordinance, by-law, rule or regulation to the contrary. 

4. The license or certificate of a Licensee or Apprentice shall be exhibited whenever 
required by an Inspector. 

5. The license or certificate of a Master Plumber and Master Gas Fitter shall at all times 
be displayed conspicuously within his/her place of business. 

6. Any sign, listing or advertisement authorized by the Licensee shall contain his/her 
designation and license number. 

7. The Inspector may require Licensees register his/her license number(s) every two 
years, on or before May I", in such each city or town where the licensed plumber or gas 
fitter desires to engage in the business of plumbing and gas fitting. 

8. A person, duly licensed in the Commonwealth as a Master Plumber or Master Gas 
Fitter and who wishes to conduct his/her plumbing or gas fitting business as a 
corporation, shall 

a. register with the Board; and 

b. pay anon-refundable fee in the amount set by the Commission of Administration 
and Finance and made payable to the Commonwealth of Massachusetts. 

Upon receipt of the registration and fee, the person shall be issued a certificate 
authorizing him/her to conduct the plumbing or gas fitting business as a corporation. 

9. It shall be the responsibility of the Licensee plumber or gas fitter to notify the Board 
of any changes of address within 30 days of relocation. 

(b) Apprentices . 

1. No person shall work as an Apprentice unless he or she is registered with the Board, 
such registration requires that the Apprentice: 

a. has completed an Apprentice registration form; and 

b. has submitted the required fee and registration form by mail or in person to the 
Executive Director of the Board. 

2. The Apprentice registration shall be exhibited whenever required by an Inspector. 

3/11/05 248 CMR -13 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.03: continued 

3. The Apprentice shall aid the Master Plumber or Master Gas Fitter in completing the 
Apprentice registration form. 

4. No Apprentice shall solicit by sign, listing or any other form of advertisement, work 
regulated or controlled by 248 CMR 3.00 through 10.00 or by any ordinance, by-law, rule 
or regulation made hereunder. 

(2) Master's Duties Regarding Apprentice Registration : 

(a) Before a prospective Apprentice begins employment as an Apprentice gas fitter or 
Apprentice plumber with a Master Plumber or Master Gas Fitter, the employing Master 
Plumber or Master Gas Fitter shall be responsible for: 

1 . informing the Apprentice of the registration requirements; 

2. insuring that the Apprentice has complied with the registration requirements in 
248 CMR 3.03(b) 1. 

(b) The Apprentice registration form shall be signed by the Apprentice and the employing 
Master Plumber or Master Gas Fitter. 

(c) The Master Plumber or Master Gas Fitter shall not charge a fee to the Apprentice in 
relation to the master's completion of the Apprentice registration form. 

3.04: Product. Desien. and Testing Standards 

(1) Board Required Product-approval . Only products and materials that have been listed by the 
Board as Product-approved shall be used for plumbing and gas fitting work performed in the 
Commonwealth and governed by M.G.L. c. 142 and 248 CMR. 

(a) Permanent Record . The Board shall maintain a list of Product-approved materials or 
products. 

(b) Initial-product-approval . 

1 . For products not already listed as Product-approved by the Board, each manufacturer 
of materials and equipment used in the construction, installation, alteration, repair, or 
replacement of any plumbing or gas fitting system shall apply to the Board for Initial- 
product-approval of each individual item or model number that is to be made available 
for installation in the Commonwealth. 

2. Should the Board grant Initial-product-approval, the grant shall be valid for one year, 
unless otherwise limited by the Board. The product will then be listed by the Board as 
Product-approved. 

3. No product that is subject to a product approval request shall be installed before the 
Board has voted to grant the Initial-product-approval request. 

4. An applicant for an Initial-product-approval request shall: 

a. provide a completed product approval application in compliance with 248 CMR 
.3.04(l)(d); 

b. a non-refundable application fee in the amount set by the Commission of 
Administration and Finance and made payable to the Corrunon wealth of 
Massachusetts; 

c. at the Board's request, appear at the Board meeting wherein the Product Approval 
application is scheduled to be discussed; and 

d. fulfill the testing requirements established by the Board. 

(c) Extended-product-approval . One year after the Board has granted an Initial-product- 
approval, an applicant may request an extension to the Initial-product-approval request. 

1 . The Extended-product-approval may be valid for up to three years. 

2. The Board may renew the request for like terms of up to three years for each term 
upon the: 

a. filing of an application to the Board for a Product Approval extension in 
compliance with 248 CMR 3.04(l)(d); 

b. a non-refundable application fee in the amount set by the Commissioner of 
Administration and Finance and made payable to the Commonwealth of 
Massachusetts; 

c. at the Board's request, appear at the Board meeting wherein the Product Approval 
application is scheduled to be discussed; and 



3/11/05 248 CMR -14 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AlvTD GAS FITTERS 




3.04: continued 



d. fulfill the testing requirements established by the Board. 

3. All permanent Product-approvals granted in the past are null and void. 

4. All modifications to an original approval of product(s) or materials shall be 
resubmitted to the Board. 

5. If the Board grants an Extended-product-approval request, the product or material 
shall remain listed as Product-approved by the Board. If the Board denies such a request, 
further use or installation of the product or material is prohibited. 

(d) A pplications . Applications for Initial or Extended-product-approvals of plumbing or 
gas fitting products or materials shall conform to the following requirements: 

1. The application shall be submitted on the forms provided by the Board. 

2. The manufacturer shall identify each individual item or model number for which 
Product-approval is requested. 

3 . A separate application form shall be submitted for each group of ten individual items 
or model numbers, or fraction thereof, for that approval is sought. 

4. In the event that a single manufacturer is seeking Initial -product-approval, or 
Extended-product-approval, of more than 90 individual items or model numbers at any 
one time, the ten-item limit specified shall apply only to the first nine application forms 

. submitted and the tenth application form shall list all the remaining individual items or 
model numbers for that approval is requested. 

5. The Product-approval application shall be accompanied with a non-refundable check 
in the amount to be set by the Gommissioner of Administration and Finance made 
payable to the Commonwealth of Massachusetts. 

6. If the Board denies a request for Extended-product-approval, further use or 
installation of the product or material is prohibited, and the product, material, or 
technology will be removed from the list maintained by the Board under 248 CMR 
3.04(l)(a). 

(e) All testing for products that are listed as Product-approved by the Board shall have been 
tested by an Approved-testing-lab. 

(f) Product-approval Statement . Any product that has been Product-approved by the Board 
may carry the statement: "This product has been approved by Massachusetts Plumbing 
Board, Approval #." 

(g) At the Board's discretion, in lieu of granting an applicant's Initial-product-approval or 
Extended-product-approval request, the Board may convert such a request to a request for 
a Test-site under 248 CMR 3.04(4). 

(2) Variances . 

(a) The Board may allow an applicant to use an alternative method, system or product that 
does not comply with 248 CMR 3.00 through 10.00 when: 

1. in the Board's opinion there is .an unusual or extraordinary circumstance or an 
established hardship that warrants special terms or conditions; and 

2. the applicant seeks permission from the Board for using the alternative method, 
system, or product for one instance at one location. 

(b) No plumbing or gas-fitting work that is subject to a Variance request shall begin before 
the Board has voted to grant the Variance request. 

(c) The Variance application shall: 

1 . be made to the Board before filing for the related Peraciit application to the Inspector; 

2. be submitted in writing and using the forms provided by the Board; 

3 . include a copy of the petition for a Variance that was made to the Board of Health or 
to the Health Department for variance applications that involve only plumbing work; and 

4. include a copy of the Board of Health or Health Department's response to the petition 
for variance applications that involve only plumbing work. 

(d) The applicant for a Variance request shall: 

1. provide a completed application in compliance with 248 CMR 3.04(2)(c); 

2. include a non-refundable fee in the amount set by die Commissioner of 
Administration and Finance and made payable to the Conunonwealth of Massachusetts; 

3. appear at the Board meeting wherein the Variance application is scheduled to be 
discussed; and 



3/11/05 248 CMR -15 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.04: continued 

4. fulfill the testing requirements established by the Board. 

(3) Special-permission . 

(a) When safety is of special consideration, provisions of 248 CMR 3.00 through 10.00 may 
require that a Licensee obtain Special-permission from the Board before installing or using 
a given product, system, design, or method. 

(b) To obtain Special-permission an applicant shall: 

1 . submit a request to the Board; and 

2. at the Board's request, appear at a Board vv/here the request is scheduled to be 
discussed. 

(c) The Special-permission request shall include: 

1. a fee; 

2. a completed application; 

3. a certification that the system was designed or engineered by a qualified individual; 

4. the submission of a set of construction documents that have been stamped by a 
Massachusetts Registered Professional Engineer; and 

5. any other requested documentation. 

(4) Test-site . 

(a) The Board may allow an applicant to use an alternative method, system or technology 
despite that the design, construction, installation or implementation of the method, system 
or technology does not comply with 248 CMR 3.00 through 10.00 because the Board seeks 
to determine the feasibility or safety of the alternative method, system or technology. In such 
circumstances; the applicant may submit to the Board a request for Test-Site(s). 

(b) A Test-site is appropriate when an applicant anticipates that the alternative method, 
system, or technology will be used for more than one installation and at more than one 
location. 

(c) No work that is subject to a Test-site request shall begin before the Board has voted to 
grant the Test-site request. 

(d) The Test-site application shall: 

1 . be made to the Board before filing for the related Pennit application to the Inspector; 
and 

2. be submitted to the Board in writing and using the forms provided by the Board. 

(e) The applicant for a Test-site request shall: 

1. provide a completed application in compliance with 248 CMR 3.04(4)(d); 

2. include a non-refundable fee in the amount set by the Commissioner of 
Administration and Finance and made payable to the Commonwealth of Massachusetts; 

3. appear at the Board meeting wherein the product Test-site application is scheduled 
to be discussed; and 

4. fulfill the testing requirements established by the Board. 

(5) Required Tests . 

(a) For the purpose of verifying a claim relating to an application made for Product- 
approval, Variance, Test-site, or Special-permission, the Board may require that tests be 
performed and that such tests are performed by an Approved-testing-lab at the expense of the 
applicant. 

(b) Any tests required by the Board for the purpose of verifying a claim relating to an 
application made under this section shall be conducted in accordance with Generally 
Recognized Standards and if no standards exist, the Board may specify the test procedure. 

(c) Additional testing and revocation: 

1 . The Board at any time may request testing to be repeated if its opinion there is reason 
to believe that the product, material, system, technology or method no longer conforms 
to the requirements on that the Board based its grant of the Product-approved status, the 
Variance request, the Test-site request, or the Special-permission request. 

2. Should additional testing prove nonconformance of the product, material, system, 
technology, or method at issue, the Product-approved status, Variance grant, Test-site 
grant, or Special-permission grant will be rescinded immediately. 



3/11/05 248 CMR -16 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




3.04: continued 



(6) A ppro ved-testin g-lab . 

(a) The Board may require that certain tests that are to be performed be conducted by an 
Approved-testing-lab. 

(b) Listing of Laboratories . The Executive Director of the Board shall maintain a current 
list of the Approved-testing-labs. 

(c) Initial-approved-testing-lab . 

1 . Each testing laboratory may apply for Initial-approved-testing-lab from the Board. 

2. If the Board grants an applicant Initial-approved-testing-lab status, the status shall be 
valid for one year and during that time the laboratory will be recognized by the Board as 
an Approved-testing-lab. 

(d) Extended-approved-testing-lab . 

1 . Prior to the expiration of an Initial-approved-testing-lab status each Initial-approved- 
testing-lab shall apply to the Board for Extended-approved-testing-lab status. 

2. The Board may grant Extended-approved-testing-lab status, that may be valid for up 
to three years. 

3. The Board may renew the request for like terais of up to three years for each term 
upon the: 

a. filing of an application to the Board; and 

b. payment of the prescribed fee on or before its expiration. 

4. Each laboratory that successfully applies for and obtains Extended-approved-testing- 
lab status will be recognized by the Board as an Approved-testing-lab during the time 
that the laboratory successfully maintains such status. 

5. Any pennanent approvals granted in past are null and void and an extended approval 
must be requested every three years. 

(e) Applications for Approval . Applications for Initial-approved-testing-lab status or 
Extended-approved-testing-lab ' status for the testing laboratories shall conform to the 
following requirements. 

1. The applications shall be on forms provided by the Board and completed by the 
testing laboratory. 

2. Each testing laboratory shall submit a notarized "Stateiment of Independence" on a 
form provided by the Board with each approval request. 

3. The written request shall be accompanied with a non-refundable check in the amount 
to be set by the Commissioner of Administration and Finance made payable to the 
Commonwealth of Massachusetts. 

(f) At the Board's request, an applicant seeking Initial or Extended-approved-testing-lab 
status shall appear at the Board meeting where the application is scheduled to be discussed. 

(g) The Approved-testing-lab shall promptly notify the Board of any changes to the 
information the Approved-testing-lab provided on the original application form submitted 
to the Board. 

(h) At any time, the Board may revoke the Approved-testing-lab stams if there is reason to 
believe that the laboratory fails to meet the standards of 248 CMR 3.00 through 10.00 or of 
the Board. 



3.05: Permits and Inspections 



(1) Permits . 

(a) Jurisdiction of Inspectors . 

1 . State Inspectors . Permits to perform plumbing and/or gas fitting work in buildings 
owned, or used or leased by the Commonwealth pursuant to M.G.L. c. 142, § 21, shall 
be submitted to State Inspectors who shall grant or deny such Permit applications and 
who shall perform the related Inspections. 

2. Local Inspectors . For all buildings that are not owned or constructed by the United 
States Government or that are not owned, used or constructed by the Commonwealth, 
pursuant to M.G.L. c. 142, §§ 1 1, 1 1 A and 12, all Permit applications shall be submitted 
to the Local Inspectors who shall grantor deny all such Permit applications and who shall 
perform the related Inspections. 



3/11/05 248 CMR -17 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.05: continued 



3. Throughout 248 CMR 3.00 through 10.00 the term "Inspector" shall refer to the 
Inspector having jurisdiction; either the Local or State Inspector as determined by 
248CMR3.05(l)(a). 

4. For those buildings owned or constructed by the United States Government, Permits 
and Inspections for those buildings are only required at the request of the Federal 

. Government. 

5. The Inspector shall, except in the case of emergencies, perform his or her duties and 
Inspections during the normal working hours of the day. 

6. In cases of emergency, a plumbing fixture may be turned on temporarily by the 
licensee provided: 

a. the installer has tested the piping in accordance with the appropriate requirements 
of 248 CMR; 

b. the installer and local water/sewer superintendent (if applicable) are satisfied that 
the installation of piping and use of equipment will assure safe operation; and 

c. the Inspector (or the chief inspector if more th^n one inspector) is notified and a 
regular inspection is made at the earliest opportunity and in no case later than the 
next working day. 

(b) Requirements . 

1 . Until a Permit has been issued by the Inspector, plumbing or gas fitting work shall 
not be: 

a. installed; 

b. altered; 

c. removed; 

d. replaced; or 

e. repaired. 

. 2. Any application for such Permit shall be made in writing to the Inspector before work 
commences. 

3. Each application for the Permit shall include: 

a. a statement of the work to be performed; 

b. the location of the building; and 

c. the names of the persons for and by whom the work is to be done. 

4. Each Permit, that is issued by the Inspector, shall be subject to the express conditions 
set forth therein as to compliance with all provisions of the statutes, rules, and regulations 
that relate to plumbing or gas fitting. 

5. The Inspector may require the applicant to submit a set of construction plans. 

6. A sepai-ate Permit is required for each building. 

7. Permits to perform plumbing work shall be issued in compliance with the following: 

a. Permits shall be issued to licensed plumbers only. 

b. Where a person seeks a Permit on behalf of a corporation, only the Master 
Plumber who has been granted the certificate to conduct the plumbing business as a 
corporation and who is an officer of the corporation under M.G.L. c. 142, § 3B shall 
be issued the Permit. 

c. Where a person seeks a Permit on behalf of a partnership, only the Master 
Plumbers who are partners in the partnership under M.G.L. c. 142, § 3B shall be 
issued the Permit. 

8. Permits to perform gas fitting work shall be issued in compliance with the following. 

a. Permits shall be issued to licensed plumbers or licensed gas fitters only. 

b. Where a corporation seeks a Permit, only the Master Plumber who is the officer 
of the plumbing corporation under M.G.L. c. 142, § 3B or the Master Gas Fitter who 
is the officer of the gas fitting corporation under M.G.L. c. 142, § 3B shall be issued 
the Permit. 

c. Where a partnership seeks a Permit, only the Master Plumbers who are partners 
in the partnership under M.G.L. c. 142, § 3B or the Master Gas Fitters who are 
partners in the partnership under M.G.L. c. 142, § 3B shall be issued the Permit. 

(c) Exceptions to the Permit Requirement : A Permit is not required for plumbing involving 
the repair of leaks in a faucet, valve, or other working pai't of a plumbing fixture, or the 
clearance of a stoppage. 



3/11/05 248 CMR -18 



248 CMR: BOARD OF STATE EXAIvIINERS 
OF PLUMBERS AND GAS FITTERS 



3.05: continued 




(d) Cancellation . Permits may be cancelled ifin the opinion of the Inspector 248 CMR 3.00 
through 10.00 has been violated as a result of the workmanship or product, materials, 
systems, methods or technology used. 

(e) Permit Termination . 

1 . When any of the work outlined in the Permit has commenced but the Permit Holder 
will not complete the work outlined in the Permit, the Permit shall be terminated by: 

a. the Permit Holder; or 

b. a Master Plumber or Master Gas Fitter who is a partner in the same partnership 
of the Permit Holder or the Master Plumber or Master Gas Fitter of a corporation 
under M.G.L. c. 142, § 3B; or 

c. the person or entity who hired the Permit Holder. 

2. Termination consists of sending written notice to the Inspector who issued the Permit, 
wherein the notice includes: 

a. the Permit number; 

b. a description of the work completed; and 

c. a description of the work not to be completed. 

3. The Inspector shall perfomi an Inspection on the work that was completed under the 
Permit. 

(f) Invalidity . Permits shall be invalid if work is not started within 90 days of the date of 
the Permit, unless the holder of the Permit or Pennits can satisfactorily prove that failure to 
start within the 90 day period was beyond his or her control. 

(g) Response Time for Permit Applications . Notwithstanding any regulation to the 
contrary, within two working days upon the Inspector's receipt of the Permit application, the 
Inspector shall act upon a Permit application received from a licensed plumber or gas fitter, 
(h) Permit Applications and Fees . 

1 . Permit applications may be submitted to the Inspector in person or by mail. 

2. The Inspector may mail or submit the Permit to the applicant in person. 

(2) Plans and Specifications . 

(a) Whenever plans and specifications are necessary or requested by the Inspector for any 
plumbing or gas fitting work, the applicant shall submit such plans to the Inspector. The 
Inspector may review the plans for up to 30 days prior to issuing the Permit. 

(b) The plans and specifications shall have thereon; 

1 . the name and address of the designer; 

2. a certification by the designer that said plans and specifications are in compliance 
with 248 CMR; and 

3. the stamp of a Massachusetts Professional Engineer. 

(c) Plans and specifications shall not be required for minor repairs and alterations. 

(3) Ins pections . 

(a) To insure compliance with all the requirements of M.G.L. c. 142 and 248 CMR, the 
Inspector shall inspect: 

1 . all work where a Permit is required; 

2. all the Permit related plumbing and gas fitting work; and 

3. all portions of existing systems that may be directly affected by the plumbing or gas 
fitting work outlined in the related Permit application. 

(b) The Inspector may require that at least two Inspections be performed, one rough 
Inspection and one final Inspection. 

(c) The Inspector may require that a test be performed as part of the Inspection process. 

(d) Notification . 

1. It shall be the duty of the Permit Holder or the licensed plumber or gas fitter 
employed by the Master Plumber or gas fitter to give notice to the Inspector when 
plumbing or gas fitting work is ready for Inspection. 

2. The licensed plumber or gas fitter or the PeiTnit Holder shall establish that the work 
will stand the prescribed test and that the roughing-in has been completed as far as 
practicable before giving the notification. 



3/11/05 248 CMR -19 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



3.05: continued. 



3. If the Inspector determines that the work will not pass the test and/or requirements 
of 248 CMR 3.00 through 10.00, necessai^ corrections shall be made and the work shall 
be resubmitted for Inspection. 

(e) Notwithstanding any regulation to the contrary, within two working days upon the 
Inspector's receipt of proper notification that the plumbing or gas fitting work is ready for 
Inspection, the Inspector shall act upon the request for Inspection. Proper notification shall 
mean that the Permit Holder has had direct communication with the Inspector. 

(f) Covering of Work . 

1 . No new plumbing and gas fitting work and such portions of existing systems that may 
be directly affected by new work shall not be covered until it has been tested if required 
by the Inspector, and the Inspector has certified that the work is in compliance with 
M.G.L. c. 142 and 248 CMR 3.00 through 10.00. 

2. If new plumbing and gas fitting work and such portions of existing systems that may 
be directly affected by new work are covered before being tested and approved by the 
Inspector, the work shall be uncovered for Inspection after the Inspector has issued a 
notice to uncover the work to the Permit Holder responsible. 

(g) Defective Materials and Poor Workmanship . E, at the time of Inspection, any leaks, 
defective or patched materials, or evidence of unskilled or inferior workmanship are found 
with a plumbing or gas installation, the following procedures shall be followed: 

1. The Inspector shall condemn the same affected part(s) or entire systena. 

2. The Inspector shall order the Licensee to remove or correct the defective parts, or 
unskilled or inferior workmanship. 

3. No further progress shall be allowed on the work until the defective parts or the 
unskilled or inferior workmanship is made to be compliant with 248 CMR. 

(4) Right of Entry . Subject to compliance with all relevant federal and state laws, the Inspector 
shall, after proper identification, have the right to enter any premises for the purpose of 
conducting an Inspection of a plumbing or gas fitting system at such times as may be reasonably 
necessary to protect the public health. 

(5) Material and Labor for Inspection and Tests . The equipment, materials, power, and labor 
necessary for the Inspection and any required tests shall be furnished by the licensed plumber or 
licensed gas fitter. 

(6) Appeal Procedure . 

(a) State Inspector Advisory Opinion . 

1 . Any party who disagrees with or is aggiueved by the decision or interpretation of a 
Local Inspector may seek an Advisory Opinion from the State Inspector. 

2. A request for an Advisory Opinion may be made by phone, by letter, or by facsimile 
to the State Inspector. 

3. The State Inspector may respond to the request for an Advisory Opinion by 
requesting information from the relevant parties and then offering his or her 
interpretation of the pertinent portions of 248 CMR. 

4. The State Inspector's interpretation is a nonbinding statement on a matter submitted 
for that purpose. 

5. At the State Inspector's discretion, his or her Advisory Opinion may be issued in 
writing or orally. 

6. Only the parties named in the request for the Advisory Opinion may consider it, and 
its reliability depends on the accuracy and completeness of all material facts. 

(b) Appeal before the Board . Any person who disagrees with or is aggrieved by the 
decision or interpretation of an Inspector may appeal in writing to the Board for a hearing. 

1. The written appeal shall be in writing. 

2. The appeal shall be accompanied by a check in the amount set by the Commissioner 
of Administration and Finance and made payable to the Commonwealth of 
Massachusetts. 

3. The fee shall be submitted by the appellant with the Executive Director of the Board 
who shall schedule the hearing and notify all interested parties. 



3/11/05 248 CMR -20 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.05: continued 

4. If the Board finds in favor of the appellant, the check deposited with the Board may 
be returned to the appellant. 

5. The decision of the Board is final. 

3.06: Grounds for Imposition of Disciplinary Sanctions 

(1) Grounds for Imposition of Disciplinary Sanctions . 

(a) Any violation of or failure to comply with any of the laws of the Commonwealth relating 
to the practice of plumbing or gas fitting, including: 

1. M.G.L. c. 142, 

2. M.G.L. c. 112, §§ 61 through 65 and or 

3. with 248 CMR 3.00 through 10.00. 

is considered unprofessional and improper conduct subject to Board hearing and discipline 
as set forth in M.G.L. c. 142; M.G.L. c. 1 12, §§ 61 through 65; and 248 CMR 3.00 through 
10.00. 

(b) If a current Licensee is convicted of or admits to sufficient facts or pleads nolo 
contendre to a crime in any jurisdiction, whether felony or misdemeanor, in the 
Commonwealth or outside of the Commonwealth, regardless of adjudication orsenience, that 
relates to the practice of plumbing or gas fitting or the ability to safely and effectively 
practice plumbing or gas fitting including, but not limited to violations of any state or federal 
laws or regulations regarding plumbing or gas fitting, the conduct of that Licensee is 
considered unprofessional and improper conduct subject to Board hearing and discipline as 
set forth in M.G.L. c. 1 12, §§ 61 through 65 and 248 CMR 3.00 through 10.00. 

(c) No person shall, aid or abet any plumber or gas fitter to violate the provisions of M.G.L. 
c. 142, M.G.L. c. 1 12, §§ 61 through 65, or 248 CMR 3.00 through 10.00. 

(d) No person shall employ an unlicensed person or employ any unlicensed person in the 
performance of any work that is required by M.G.L. c. 142 or 248 CMR 3.00 through 10.00. 

(2) Deceptive Advertising . The following advertising practices are considered fraudulent, false, 
deceptive or misleading and are prohibited: 

(a) advertising that contains a misrepresentation of facts or false statements regarding the 
Licensee or Apprentice's professional achievements, degrees, trained skills, and 
qualifications in the plumbing or gas fitting profession; 

(b) advertising the content or the context of that makes only a partial disclosure of relevant 
facts, such as advertising that advertises a discounted price without identifying the specific 
product or service to that the discounted price applies and without specifying the usual price 
for the product or services identified; 

(c) advertising that contains a.representation that a continuing education or training program 
is approved by the Boai'd, if the content of the program departs from the content approved 
by the Board or is not in fact approved; 

(d) advertising that contains any representation, statement or claim that the Board 
determines is misleading or deceptive to the public. 

(3) Ethical Standards and Professional Conduct . Requirement to respond to Board 

(a) A Licensee or Apprentice shall respond within 30 days to a written communication from 
the Board or its designee and shall make available to the Board any relevant and authorized 
records .with reispect to an inquiry or complaint about the Licensee or Apprentice's 
professional conduct. The 30-day period commences on the date the Board sends the 
communication by registered or certified mail with return receipt requested to the Licensee's 
or Apprentice's last known address. 

(b) A Licensee or Apprentice shall cooperate with any reasonable request from a the 
Division of Professional Licensure's agent or employee acting on behalf of the Board while 
investigating a complaint or allegation regarding the Licensee or Apprentice's professional 
conduct as a plumber or gas fitter. 

(4) Welfare of Persons Served . 

(a) Neither a Licensee nor an Apprentice shall provide any services beyond the scope of 
their practice or for that they are not appropriately licensed. 

3/11/05 248 CMR -21 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.06: continued 



(b) Neither a Licensee nor an Apprentice shall misrepresent qualifications, affiliations, 
educational background or experience in the profession to the public, colleagues or other 
individuals or institutions. 

(c) Each Licensee and Apprentice shall fully inform persons served of the nature, possible 
effects, and limitations of services rendered or to be rendered. 

(d) Each Licensee's and Apprentice's fees shall be commensurate with services rendered. 
Under no circumstances shall a Licensee or Apprentice charge for services not rendered. 

(e) Unless required by law, neither a Licensee nor an Apprentice shall reveal to any 
unauthorized person any confidential information obtained from the individual that the 
Licensee or Apprentice serves professionally without the client's permission. 

(f) Each Licensee and Apprentice shall take all reasonable precautions to avoid injuring 
persons and property in the delivery of professional services. 

(g) Each Licensee and Apprentice shall establish professional relationships with clients and 
colleagues and follow acceptable patterns of professional conduct with such persons 
regardless of race, religion, gender or age. 

(5) Professional Qbiectivity/Conflict of Interest . 

(a) Licensees and Apprentices shall maintain objectivity in all matters concerning the 
welfare of persons served professionally. 

(b) Licensees and Apprentices must guard against conflicts of professional interest. They 
shall not engage in commercial activities that conflict with responsibility to clients or to 
colleagues. 

3.07: Complaint Handling Process 

(1) Any person, organization, agent or employee of the Division of Professional Licensure, or 
member of the Board may file a complaint or provide information to the Board that alleges 
misconduct by a Licensee or Apprentice. Ifcomplairiant is not anonymous, the complainant shall 
provide his or her name, address, and telephone number and a detailed description of the alleged 
act(s) that prompted the complaint. The complaint form shall be signed by the complainant or 
an authorized representative. The Board, at its discretion may investigate anonymous 
complaints. 

(2) Inquiry and Investigation . After receipt and review of a written complaint, the Board may 
conduct or cause to be conducted any reasonable inquiry or investigation it deems necessary lo 
determine the truth and validity of the allegation(s) set forth in such complaint. If the Board or 
an authorized agent of the Board determines that the complaint is lacking in merit, it may close 
the complaint. 

(3) Request for Response and Response . If the Board or its duly authorized agent deteiinines 
that a complaint has merit, the Board or its duly authorized agent may request that the Licensee 
or Apprentice who is the subject of the complaint provide a response to the complaint. A 
Licensee or Apprentice shall respond to a request for response, and such response may be made 
either personally or through an attorney. A response shall address the substantive allegation(s) 
set forth in the complaint or request for response, be provided in writing, and be provided in a 
timely manner in accordance with such request. 

(4) Investigative Conference . To facilitate disposition, the Board or its duly authorized agent 
may request any person to attend an investigative conference to discuss the complaint and 
response at any time prior to the commencement of a formal hearing conducted pursuant to 
M.G.L. c. 30A. 

(5) Disposition of Complaints . At any point during the course of an investigation or inquiry 
into a complaint, the Board or its duly authorized agent may determine that there is not and will 
not be sufficient evidence to warrant further proceedings or that the complaint fails to allege 
misconduct for that a Licensee may be sanctioned by the Board. In such event, the Board may 
dismiss or close its investigation of the complaint, and otherwise communicate with the Licensee 
or Apprentice and/or the complainant as deemed appropriate by the Board. 

3/11/05 248 CMR -22 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



3.07: continued 



(6) Board Action Required . If a Licensee or Apprentice fails to respond as requested by the 
Board or its duly authorized agent, or, after receipt of a response or at any point in the course of 
investigation or inquiry into a complaint, the Board or its duly authorized agent determines that 
there is reason to believe that the alleged acts occurred and constitute a violation for that a 
Licensee or Apprentice may be sanctioned by the Board, the duly authorized agent or the Board 
may issue an order to show cause or offer to resolve the complaint by consent agreement or 
otherwise informally resolve the matter. 



REGULATORY AUTHORITY 

248 CMR 3.00: M.G.L. c. 112, § 61; M.G.L. c. 142, §§ 13 and 21. 



• 



3/11/05 248 CMR -23 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



3/11/05 248 CMR -24 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 4.00: INTRODUCTION AND MASSACHUSETTS MODMCATIONS 

Section 



4.01 
4.02 
4.03 



Scope and Purpose 

Definitions 

Adoption of Relevant Codes and Overview of Modifications 



4.01 : Scope and Purpose 

248 CMR 4.00 governs the Board's adoption of the ANSI Z223. 1-2002 NFPA-54-2002 
National Fuel Gas Code 2002 Edition and NFPA 58 Liquefied Petroleum Gas Code 2001 Edition 
and the modifications which comprise the Massachusetts Fuel and Gas Code. 

4.02: Definitions 

As used in 248 CMR 4.00 through 7.00. 

NFPA-54 . The ANSI Z223. 1-2002 NFPA-54-2002 National Fuel Gas Code 2002 Edition. 

NFPA-58 . The NFPA 58 Liquefied Petroleum Gas Code 2001 Edition. 
4.03: Adoption of Relevant Codes and Overview of Modifications 

(1) Adoption of Relevant Codes : The Massachusetts Fuel Gas Code shall be: 

(a) The ANSI Z223.I-2002 NFPA-54-2002 National Fuel Gas Code 2002 Edition as 
modified in 248 CMR 4.00 and 248 CMR 5.00. A copy of ANSI Z223. 1-2002 NFPA-54- 
2002 National Fuel Gas Code 2002 Edition may be obtained from any national bookstore 
chain. 

(b) The NFPA 58 Liquefied Petroleum Gas Code 2001 Edition as modified in 248 CMR 
4.00. A copy of NFPA 58 Liquefied Petroleum Gas Code 2001 Edition may be obtained 
from any national bookstore chain. 

(c) 248 CMR 7.00 Massachusetts Code for Gas Utilization Equipment in Large Boilers. 

(2) Overview of Modifications . 

(a) Order of Precedence : 

1. 248 CMR 3.00 through 10.00 shall take precedence when there is a conflict between 
248 CMR 3.00 through 10.00 and the NFPA-54. 

2. 248 CMR 3.00 through 10.00 shall take precedence when there is a conflict between 
248 CMR 3.00 through 10.00 and the NFPA-58. 

3. In the event of a conflict between the 2002 Edition of NFPA-54-ANSI Z223.1 
National Fuel Gas Code as modified in 248 CMR 4.00 and 248 CMR 5.00 and the 2001 
Edition of the NFPA 58 Standard for the Storage and Handling of Liquefied Petroleum 
Gases as modified in 248 CMR 4.00, the 2002 Edition of NFPA-54-ANSI Z223.1 
National Fuel Gas Code with the modifications made in 248 CMR 4.00 and 5.00 shall 
take precedence over the 2001 Edition of the NFPA 58 Standard for the Storage and 
Handling of Liquefied Petroleum Gases with the modifications in 248 CMR 4.00. 

(b) Modifications to NI^^PA 58 - NFPA 58-2001 Standard for the Storage and Handling 
of Liquefied Petroleum Gases shall be modified as follows: 

1 . Chapters 1 , 2, and 3 as they apply to the use of Liquefied Petroleum Gas Systems not 
covered in NFPA-54-ANSIZ223 . 1 , 2002 have been adopted as the Code governing these 
systems. 

2. Reference to Storage Containers in Chapters 1, 2,and 3 are not adopted by the Board 
given that FPR 527 CMR 6.00 governs Storage Containers. 

3 . Reference to Engine Fuel Systems and LP-Gas Systems on Vehicles in Chapter 3 are 
not adopted by the Board. 

(c) NFPA-54- ANSI Z223.1 -2002 the National Fuel Gas Code shall be modified as 
follows: 

1 . Delete pages i through iv and substitute the following: 

In accordance with the provisions of M.G.L. c. 142, § 13, the. Board makes the 
following rules and regulations relative to the installation of fuel gas piping systems, fuel 
gas utilization equipment, and related accessories throughout the Commonwealth. 

3/11/05 248 CMR -25 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



4.03: continued 

Nothing in 248 CMR 3.00 through 7.00 shall conflict with the provisions of 
220 CMR Department ofTelecommunication and Energy lOO.OOthrough 113.00ofthe 
Massachusetts Gas Distribution Code and nothing in 248 CMR shall supersede or 
overrule any of the provisions of M.G.L. c. 142 or any code, rules, or regulations 
established under the authority of M.G.L. c. 142. 

Rule 1 ■ Gas piping systems, in general, shall be low pressure (not in excess of '/2 pound 
per square inch or 14 inches water column). 

Rule 2 . The requirements of 248 CMR 3.00 shall apply to all gas fitting work performed 
in the Commonwealth. 

Rule 3 . In cases of emergency a gas appliance may be turned on temporarily by the 
licensed installer provided: 

a. the installer has tested the piping in accordance with the appropriate section of 
248 CMR; 

b. the installer and the supplier are satisfied that the installation of piping and use 
of the equipment will assure safe operation; and 

c. the Inspector (or the chief inspector if more than one inspector) is notified and a 
regular Inspection is made at the earliest opportunity but not later than the next 
working day. 

Rule 4 . Undiluted Liquefied Petroleum Gas: (Propane Gas) 

a. No deliveries of propane gas shall be made to any new or altered gas piping 
installation without the supplier first ascertaining whether the Inspector has approved 
the permit and Inspected the installation. 

b. Alterations or additions to the original gas piping installation shall require re- 
approval and issuance of new permits. 

Rule 5 . Each trailer that is used in any way for human occupancy and incorporates a gas 
piping system shall be inspected by the Inspector in every location and relocation where 
such trailer is in use and reconnected to a fuel gas source that is regulated by 248 CMR 
3.00 through 7.00. 

Rule 6 . For the purpose of 248 CMR, the Inspector shall be either the Local or State 
Inspector as determined under 248 CMR 3.00. 

Rule 7 . An amendment to Title 49 CFR, Code of Federal Regulations Part 192, 
Subpart A - General Section 192.3 Definitions of the minimum Federal Safety Standards 
relating to transportation of Natural Gas and other Gas by Pipeline redefine a service line 
to mean a distribution line that transports gas from a common source to: 

a. A customer meter or the connection to a customer's piping, whichever is farther 
downstream; or 

b. The connection to a customer's piping if there is no customer meter. A customer 
meter is the meter that measures the transfer of gas from an operator to a customer. 

Rule 8 . Exception to PeiTnit Requirements of 248 CMR 3.00 . No peiTnit shall be 
required for: 

a. The adjusting of gas appliance controls, the adjusting of gas flames, the 
replacement of gas controls, the installation or replacing of gas meters and regulators, 
and the servicing of gas appliances shall be deemed work for which no permit shall 
be required. 

b. The restoration of gas service after a gas meter or meter fit is relocated under the 
following rules: 

i. The work shall be done by authorized employees of gas companies organized 

under M.G.L. c. 164. 

ii The required gas pipiiig reconnection shall not exceed ten feet. 

iii. The gas piping reconnections shall be labeled by the installing gas company. 



3/11/05 248 CMR -26 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



4.03: continued 

Rule 9 . Gas shall not be turned on to a new or existing system, which has been renovated 
unless the installation has been Inspected and approved by the Inspector as required 
under 248 CMR 3.00. 

Rule 10 . Whenever there is reason to believe that the gas system of any building or 
structure has become defective, it shall be subjected to test and/or Inspections, any 
defects found shall be corrected as required in writing by the Inspector. 

Rule 11 . Whenever additional gas piping connections or alterations thereof are being 
made or installed in existing buildings or premises, and existing gas fitting is found to 
be in violation of 248 CMR to the point of being a health menace, nuisance or a safety 
hazard, such existing gas fitting shall be made compliant with 248 CMR 3.00 through 
7.00 before any additional work may be completed. 

Rule 12 . In addition to the requirements of 248 CMR 3.00 through 7.00, when gas 
equipment, which is connected to a gas system, is to be permanently removed and/or 
replaced, a permit for the work shall be secured. All connections to such equipment shall 
be made gas tight by use of a plug or cap. 

Rule 13 . Should a licensed plumber or gas fitter holding a gas permit for installation of 
gas work turn on gas to such work without first notifying the Inspector, he may not be 
granted any further gas permits upon the discretion of the Inspector. 

Rule 14 . Surveyed . Priortothecommencement of work, all portions of existing systems 
that are directly affected by proposed gas fitting work shall be surveyed by the licensed 
plumber or gas fitter to insure that the existing work is adequate to support the proposed 
work. 

Rule 15 . In the case of a fire or explosion involving facilities or buildings regulated by 
the Board, the Inspector shall in reasonable detail promptly notify the Board and the 
Serving Gas Supplier. The Inspector or authorized agent of the State Fire Marshall shall 
impound any gas piping or gas equipment involved in the incident which in his or her 
opinion contributed in any way to the explosion or fire. 

Rule 16 . Utility Gas and Undiluted Liquefied Petroleum Gas systems within the same 
building; 

a. Utility gas and L.P^ gas systems shall not be installed within the same building 
except where the Board has first granted Special-Permission under 248 CMR 3.00. 

b. When the two gas systems are installed within the same building, the natural gas 
piping system shall be color-coded yellow and the L. P. gas piping system colored 
green. 

c. Labeling : The gas piping systems shall be labeled: 
i at a minimum of every ten feet; 

ii. at all changes of direction; 

iii. on each side of a penetration through a partition, wall or ceiling; and, 

iv. at every gas shutoff valve. 

v. The labels shall be: 

(i) colored yellow with black lettering, indicating the type of gas and the 
pressure contained within the piping system, and 

(ii) the letters shall be sized so that the labeling can be read from a normal 
line of vision when standing at the main floor level. 

Rule 17 . The Limited Liquefied Petroleum Gas Installer shall be responsible for the gas 
permits when installing, connecting, and moving liquefied petroleum gas salamanders, 
space heaters and related equipment used in buildings under construction. 

Rule 18 . A secondary meter assembly from utility gas companies is allowed down 
stream of a master meter subject to all permits, testing, rules, and regulations. 



3/11/05 248 CMR -27 



248 CMR: BOAJID OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



4.03: continued 

Rule 19 . Gas piping systems, for gas utilization equipment over 12,500,000 BTU/hour 
and water tube boilers having outputs of 10,000 pounds of steam per hour or more 
require: 

a. that Special-permission by the Board be obtained before installation. 

b. That the plans bear the seal of a Massachusetts Registered Professional Engineer. 

c. That accompanying the plans is a letter from the servicing gas supplier indicating 
that the fuel supply is available. 

Rule 20 . Gas piping systems for cogeneration facilities require: 

a. Special-pennission from the Board prior to installation. 

b. That the plans bear the seal of a Massachusetts Registered Professional Engineer. 

c . That accompanying the plans is a letter from the servicing gas supplier indicating 
that the fuel supply is available. 

Rule 21 . Repairs and Alterations . 

a. In existing buildings or premises where gas piping installations are to be altered, 
replaced, repaired, or renovated, deviations from the provisions of 248 CMR 3.00 
through 7,00 are permitted, provided such deviations are found to conform to the 
intent of 248 CMR 3.00 through 7.00, and are approved by the Inspector. 

b. Whenever compliance with the provisions of 248 CMR 3.00 through 7.00 fails 
to eliminate or alleviate a nuisance which may involve health or safety hazards, the 
owner or his or her agent shall install such additional gas utilization equipment as 
may be found necessary by the Inspector. 

. c. The intent of 248 CMR 4.03 Rule 21a. and b. shall apply only when a hardship 
occurs due to mechanical or structural limitations, and when extreme circumstances 
warrant special terras or conditions in the opinion of the Inspector and the servicing 
gas supplier. 

i. Deviations from the provisions of the code may be permitted in existing 
building or premises where gas fitting installations are to be altered, repaired, or 
renovated. The deviations shall be negotiated by the permit holder and the 
Inspector prior to the installation. The deviations may be allowed provided that 
the deviations are found necessary and conform to the scope and intent of 
248 CMR. 

ii. Whenever the work subject to a permit complies with the provisions of 
248 CMR 3.00 through 10.00, but the Inspector notes other existing plumbing or 
gas fitting that may cause a health or safety hazard, the Inspector shall notify the 
owner of the hazard in writing. 

Rule 22 . For gas utilization equipment in boilers or with burners having inputs that 
exceed 400,000 BTU/hour per combustion chamber refer to 248 CMR 7.00, 
Massachusetts Code for Gas Utilization Equipment in Large Boilers. 

Rule 23 . Work on a gas supply systems at a point upstream of the outlet of the meter set 
assembly or the service regulator when a meter is not provided; 

a. Serving Gas Supplier . No person, unless in the employment of or having 
permission from the sei^ving gas supplier, shall open or make connections with a gas 
distribution main. 

b. Service Gas Piping . When a gas meter is not provided, no persons, unless in the 
employment of or having permission from the serving gas supplier, shall: 

i. repair, 

ii. alter, 

iii. open or make connections to the service gas piping, or 

iv. do any other work on the parts of the gas supply distribution system up to 

and including the meter set assembly, or the service regulator. 

c. Meter or Service Regulator When a Meter is not Provided . 

i. No person, unless in the employment of or having permission from the serving 
gas supplier, shall discormect the inlet of the gas meter, or service regulator when 
a meter is not provided, or move such a meter or regulator. 



3/11/05 248 CMR -28 



4.03: continued 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



ii. A gas fitter or plumber may disconnect the piping from the outlet side of such 
a meter or regulator. He or she shall remake the joint at the meter, or service 
regulator outlet when a meter is not provided, carefully replacing all insulating 
fittings or insulating parts of such fittings, and shall leave the gas turned off at the 
meter or regulator. 

d. Notify Serving Gas Supplier of Any Repairs Needed . In the case of any work 
performed by a gas fitter or plumber that discloses the need for repairs or alterations 
on any part of the gas supply system, the serving gas supplier shall be notified 
promptly of this fact. 

e. Notify Serving Gas Supplier of Any Leaks . If gas is leaking from any part of the 
gas supply system, a gas fitter or plumber not in the employment of the serving gas 
supplier may make the necessary repairs and shall promptly notify the Inspector and 
serving gas supplier. 

Rule 24 . The Board must certify the installer of a field installed automatic gas vent 
damper. 

Rule 25 . Penalties and Appeals . 

a. Penalty . See 248 CMR 3.00 for penalty provisions. 

b. Appeal Procedure . See 248 CMR 3.00 for appeal procedure. 



REGULATORY AUTHORITY 

248 CMR 4.00: M.G.L. c. 112, §61; M.G.L c. 142, §§ 13 and 21. 



3/11/05 248 CMR -29 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



3/11/05 248 CMR -30 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 5.00: AMENDMENTS TO 2002 EDITION OF ANSI Z223. l-NFPA-54 

Section 

5.01: Scope and Purpose 

5.02: 248 CMR 5.02 Modifications to sections of NFPA-54, Chapter 1 

5.03: 248 CMR 5.03 Modifications to sections of NFPA-54, Chapter 5 

5.04: 248 CMR 5.04 Modifications to NFPA-54, Chapter 6 

5.05: 248 CMR 5.05 Modifications to NFPA-54, Chapter 7 

5.06: 248 CMR 5.06 Modifications to NFPA-54, Chapter 8 

5.07: 248 CMR 5.07 Modifications to NFPA-54, Chapter 9 

5.08: 248 CMR 5.08 Modifications to NFPA-54, Chapter 10 

5.09: 248 CMR 5.09 Modifications to NFPA-54, Chapter 1 1 

5.01 : Scope and Purpose 

248 CMR governs the Board's modifications to NFPA-54. 

5.02: Modifications to Sections of NFPA-54. Chanter 1 

(1) Revise NFPA-54 section 1.1.1.1(A) as follows. 

Coverage of piping systems shall extend form 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 shut off valve where no meter is provided. For undiluted 
liquefied petroleum gas systems, the point of delivery shall be considered the outlet of the 
first stage regulator. 

(2) Revise NFPA-54 section 1.1.1.1(B) as follows. 

All Gas piping systems, in general for all buildings and structures shall be low pressure (not 
in excess of Vi P.S.I.G. or 14 inch water column) All low pressure gas piping systems shall 
be designed using a maximum 0.5 inch water column pressure drop. Special-permission 
pursuant to 248 CMR 3.00 may be granted for elevated pressure (greater than Vi P.S.I.G. or 
14 inch water column) when gas utilization equipment specifically requires higher pressure 
or when a designed low pressure system requires pipe sizes in excess of four inch I.P.S. An 
elevated pressure Special-permission request form specified by the Board shall be filled out 
completely and submitted to the Executive Secretary for the Board. If the Board grants 
Special-permission, a copy shall be filed with the Inspector before the commencement of any 
work. 

(3) Revise NFPA-54 section 1.1.1 .2.( 1 3) as follows. 

All Undiluted Liquefied Petroleum or Natural gas piping connections installed for the 
purpose of providing temporary heat in or adjacent to buildings or structures under 
construction or renovation shall comply with 248 CMR 3.00 through 7.00: 

,(4) Revise NFPA-54 section 1.1.2 as follows. Amend the first sentence to read: 

Other Standards: In applying NFTPA - 54, reference should also be made to the 
manufacturer's instructions, the serving gas supplier regulations, and local building, heating, 
plumbing or other codes in effect in the area in which the installation is made, 

5.03: Modifications to sections of NFPA-54. Chapter 5 

(1) Revise NFPA-54 section 5. 1.1 as follows: 

Permits and Piping Plans. 



12/30/05 248 CMR -31 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.03: continued 



(a) In addition to the permit requirements of 248 CMR 3.05, for gas installations of over 
5,000,000 BTU/Hr the following is required: 

1. A plan of the proposed piping system and equipment shall be submitted for approval 
to the Inspector. 

2. This plan shall contain a written statement from the local gas supplier that such fuel 
. demand is available. 

3. The system shall be designed by a Registered Professional Engineer. 

(b) Gas piping systems requiring gas pressure in excess of Vi P.S.I.G. require Special- 
permission of the Board before being installed. This Special-permission requirement does 
not apply to propane gas piping systems that are between the first and second stage regulator 
if the second stage regulator is located outside the building. 

(2) Revise NFPA-54 section 5.4.2.1 by adding a last sentence and table as follows: 

Diversity factor is an important factor determining the correct gas piping size to be used for 
supplying domestic ranges in multiple family dwellings; it applies to domestic ranges only 
and shall not apply to any other gas appliances. 

TABLE 

Multi-Family Dwellings 

Diversity Factor in Percent of Total Load for 

Domestic Gas Ranges with connected Load Ratings 

of 63,000 Btu/hr. or more per Range 



No. of Ranges 


Demand cubic 
ft/hour 


Percent of 
Rating 


No. of Ranges 


Demand cubic 
ft/hour 


Percent of 
Ratings 


1 


63 


100 


13 


270 


33 


2 


107 


85 


14 


283 


32 


3 


132 


70 


15 


293 


31 


4 


151 


60 


16 


312 


31 


5 


173 


55 


17 


332 


30 


6 


189 


50 


18 


340 


30 


7 


198 


50 


19 


346 


29 


8 


212 


42 


20 


353 


28 


9 


225 


39 


21 


358 


27 


10 


233 


31 


22 


374 


27 


11 


243 


37 


23 


390 • 


27 


12 


257 


35 


24 & Over 


408 


• 27 



(3) Replace NFPA-54 section 5.5. 1 with the following: 

Elevated Pressure Piping to be Labeled: Piping supplying gas at a pressure greater than V2 
P.S.LG. or 14 inch water column shall be labeled: 

(a) at a minimum of every ten feet; 

(b) at all changes of direction; 

(c) on each side of a penetration through a partition, wall or ceiling; and, 

(d) at every gas shutoff valve. 

(e) The labels shall: 

1. be colored yellow with black lettering; 

2. indicate the type of gas and the pressure contained within the piping system; and 

3. the letters shall be sized so that the labeling can be read from a normal line of 
vision when standing at the main floor level. 

(4) Revise NFPA-54 section 5.6.2.1 as follows:. 

Cast-iron and Galvanized Pipe and pipe fittings shall not be used. 



3/1 1/05 



248 CMR - 32 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.03: continued 

(5) Replace NFPA-54 section 5.6.2.2 with the following. 

Steel and Wrought-Iron. 

(a) Steel and wrought-iron pipe shall be at least of standard weight (schedule 40) and 
shall comply with one of the following standards: 

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 Seamless Carbon Steel Pipe for High- 
Temperature Service. 

(b) Welding of gas piping systetns with pressures under or equal to 70 P.S.I.G shall be 
performed according to the following; 

1 . Welding will be performed by a qualified welder who is a licensed plumber or 
gas fitter, or under the direct supervision of a licensed plumber or gas fitter. The 
welding shall conform to a Welding Procedure Specification (WPS), accompanied 
by a Procedure Qualification Record ( PQR), which will be available to the Inspector. 
■2. The WPS and PQR must be in accordance with one of the following: 

a. American Welding Society (AWS) B2. 1 

b. American Petroleum Institute (API) 1104 

c. ASME Section DC 

3. The installation shall meet the following Inspection criteria: 

a. A visual Inspection as to the quality of the weld shall be performed in 
accordance with AWS D 1.1 or API 1 104 standards 

b. The test pressure used during an Inspection shall comply with the following: 
i. Systems with a maximum operating pressure of ten P.S.I.G. or less, shaD 
be tested to a minimum of three P.S.I.G. or ten times the operating pressure, 
whichever is greater. 

ii. Systems with an operating pressure greater than ten P.S.I.G. and less than 
70 P.S.I.G. shall be tested at 100 P.S.I.G. 

iii. The test duration shall be one hour for every 100 feet of pipe, or 
fraction thereof. The minimum test duration shall be one hour and the 
maximum test duration shall be 24 hours, irrespective of system design. 

(c) Welding on gas piping systems with pressures over 70 P.S.I.G. shall be performed 
according to the following: 

1 . All welds shall be full penetration and performed by a qualified welder. 

2. All welds shall be subjected to a 100% X-ray or 100% Ultrasonic Examination 
(UT) test. 

3. The manifolding in any combination of gas regulators and relief vents is 
prohibited 

4. All Socket Welded Type Joints on gas piping supplying pressures over 70 
P.S.I.G. shall require a magnetic particle test or other recognized non-destructive test. 

5. The gas piping system shall be pressure tested to a minimum of 1.25 times the 
gas piping systems working pressure. 

a. The test duration shall be a minimum of one hour. 

b. The test shall be witnessed by the Inspector. 

6. The testing company and their authorized field agent that provides the (UT) field 
examination shall be certified by a recognized and accredited agency in such testing. 

A copy of the AWS certification shall be submitted to the Board prior to the 
examination. 

7. Repairs that are made to welded joints that fail the X-Ray or (UT) test shall be 
re-tested and re-certified. For future reference; the failed welded joint that is re- 
tested shall be identified by stenciling Vi inch high white lettering at the weld 
location the date of the re-test. 

8. The Board shall require an affidavit signed by the individual who performed the 
X-ray or (UT) examination for the testing agency. The affidavit shall state that all 
welds meet the requirements of the Welding Procedure Specification (WPS) and that 
all welds passed the X-Ray or (UT) examination. 



3/11/05 248 CMR -33 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.03: continued 

(6) Replace NFPA-54 section 5.6.3.4 with the following: 

For purposes of this section CSST shall mean corrugated stainless steel tubing systems. 

Corrugated stainless steel tubing systems must be tested and listed in accordance with ANSI/ 
LC- 1 -/CS A 6.26 and installed by manufacmrer trained, licensed plumbers and gas fitters The 
system shall be sized in accordance with NFPA-54 - ANSI Z233. 1 - 2002. 

(a) CSST Fittings. All fittings and accessories used in the installation of CSST piping 
systems shall be approved by the CSST manufacturer for use with their system. 

(b) CSST Concealed Fittings: 

1. Where gas piping is to be concealed: 

a. connections shall only be made with CSST fittings listed for use in concealed 
spaces; and 

b. connections shall be produced by the manufacturer of the CSST piping 
system. 

2. Malleable fittings shall be permitted in concealed locations when used in 
combination with CSST fittings. 

3. For each malleable fitting there shall only be a single CSST connection. 

(c) Repairs to Concealed CSST Piping: 

1. Repairs required in a CSST system which is concealed, or otherwise not readily 
accessible, shall be repaired with a fitting hsted for the CSST system being used. 

2. Installation of an access panel shall be required at the repair site. 

(d) Interior Meter Connections: Interior meter connections may be directly connected 
to the CSST system as long as the meter is securely affixed to the building, and the CSST 
is secured to the building structure when 24 inches or more of tubing is exposed. 

(e) Exterior Meter Connections: 

1 . No CSST shall be connected to an exterior meter. 

2. The tubing shall terminate at the foundation wall with a termination fitting, and 
the meter shall be rigidly connected with steel piping to the building structure. 

(f) Sleeved Gas CSST: 

1 . CSST shall be sleeved when passing through a metal or concrete deck to protect 
the integrity of the mbing and be fire - stopped in accordance with the State Building 
Code. 

2. The sleeve shall be Schedule 40 black or galvanized pipe and shall extend a 
minimum six inches from the top of the finished floor and the underside of the deck, 

(g) Only manifolds for CSST systems supplied and listed by the CSST manufacturer 
may be concealed. 

1 . Assembled manifolds shall be installed in an accessible location as defined in the 
2002NFGC-Z223.1. 

2. Assembled manifold is a piping combination made up of close nipples and 
malleable tees. 

(h) Fireplace Log Installations: 

1 . CSST shall terminate with a termination fitting at the entrance to the masonry fire 
box. 

2. The workmanship shall be performed and completed in such a manner so that the 
termination will not be exposed to any adverse effects. 

(i) Fixed Appliance Connection Using CSST: CSST may be directly connected to a 
fixed appliance when the following conditions are met. 

1 . The tubing is securely attached to the building structure or other means of solid 

support. 
. 2. Tubing shall not run exposed for a distance greater than or equal to 30 inches 

without being physically attached to the building stmcture or other means of solid 

support. 

3. CSST terminates with a proper fitting and gas cock, 
(j) CSST Used Underground: 

1 . When in contact with the earth or other material that could corrode the piping, the 
CSST shall be installed within a sleeve designed to withstand the superimposed 
loads. 



3/11/05 248 CMR -34 



5.03: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



2. Except for pre-engineered sleeves that are Product-approved by the Board, the 
sleeve shall allow free movement of the CSST. 

3. All sleeve ends shall be sealed liquid tight. 

4. An acceptable tape marking system shall be in place no more than six inches from 
the top of the grade indicating that a gas line is below. 

5. The minimum depth for buried gas piping as describe herein is 18 inches from 
the top of grade and the minimum size of the CSST to be buried is % inch. 

(k) CSST Used as an Appliance Connection: CSST shall not be used as a flexible 

•appliance connector downstream of the appliance shutoff device. 

(I) Sizing CSST Systems: CSST systems shall be sized and installed with a maximum 

14 inch water column (Vi P.S.I.G.) gas pressure unless Special -permission has been 

granted by the Board. 

(m) CSST Installation and Modifications: Installation of CSST in the Commonwealth 

of Massachusetts shall be in strict compliance with the manufacturer's instructions and 

the Massachusetts State Plumbing and Gas Code 248 CMR 3.00 through 7.00. 

(n) Testing Requirements for CSST Systems: 

1. Before any piping is covered, when CSST piping systems are installed in new 
construction or remodeling, the system shall be tested as part of the Inspection as 
prescribed under NFPA-54 Chapter 7.1 as modified under 248 CMR 5.05. 

2. Before piping is connected to any appliance the licensed plumber or gas fitter 
shall do a second test of the system. 

3. A tag shall be: 

a. affixed to the meter or service manifold acknowledging this test; and 

b. signed and dated by the licensed plumber or gas fitter. 

(o) Liquid Leak Detector: No corrosive liquids shall be used in the testing of the CSST 

system. Some household soaps and detergents may be corrosive to gas and plumbing 

products. 

(p) Exposed CSST. Tubing: When CSST is installed outdoors or is subject to corrosive 

chemicals, exposed stainless CSST tubing (where the jacket has been removed) shall be 

recovered with tape as specified by the CSST manufacturer. (After the completion of 

testing.) 

(q) CSST Piping Installed on Roofs: CSST shall be installed for roof top equipment 

only when it is supported by one of the following methods: 

1 . The CSST tubing with a UV stabilized jacket is supported the full length of the 
CSST run. 

a. The tubing shall be affixed to a wooden plank or a steel channel that is 
securely attached by an appropriate method every six feet to the roof structure. 

b. The tubing shall be attached directly to the support every six-feet. 

2. The CSST tubing is installed within a metal or plastic conduit that is securely 
attached by an appropriate method every six feet to the roof structure. Where the 
piping system requires a tee to be installed within the line, the sleeve shall terminate 
no more than 12 inches from the tee on both runs and the branch line. 

3. For CSST tubing having sizes of IV2 inch and two inches and having a UV 
stabilized jacket, the following requirements shall be satisfied: 

a. the CSST shall be supported on blocks which are spaced not more than 48 
inches apart. 

b. The blocks shall be constructed of materials appropriate for outdoor 
conditions and shall be securely attached by an appropriate method to the roof 
structure, and 

. c. The method used to attach the CSST to the block shall not damage the plastic 
coating. 

4. The maximum length of tubing not supported by any method listed shall not 
exceed 30-inches when connected to a gas fired roof top unit or similar gas 
equipment. 



3/11/05 248 CMR -35 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.03: continued 

(7) ReviseNFPA-54section5.6.7.4by replacing it with the following: 

Thread Compounds: Thread (joint) compounds (pipe dope) and pipe thread sealing tape 
(Teflon, etc.) shall be resistant to the actions of liquefied petroleum gas or to any other 
chemical constituents of the gases to be conducted through the piping. 

(8) Revise NFPA-54 section 5. 1 2 as follows: 

5.12 Acceptable Shutoff Devices: Gas Cocks and Ball Valves installed for use shall either 
be listed by a nationally recognized testing agency or comply with applicable American 
Standard Approval or Listing Requirements and shall be Product-Approved by the Board. 
They shall: 

(a) Have clearly indicated open and closed positions and rigidly secured stops to limit 
both extremes of rotation. W.O.G. Ball Valves lever or Tee Handle Type are acceptable. 

(b) Show no evidence of leakage when subjected to an air pressure test of a six inch 
mercury column (3 P.S.I.G.) for ten minutes. 

(c) Be capable of withstanding without deformation, breakage or leakage the following 
"Turning Effort" standards when screwed onto a pipe fitting: 

NOMINAL PIPE SIZE TURNING EFFORT 

Vi inch 300 inch-pounds 

Vi inch 450 inch-pounds 

1 inch 600 inch-pounds 
VA inch 700 inch-pounds 
I'/zinch 750 inch-pounds . 

2 inch 950 inch-pounds 
2^2 inch 1050 inch-pounds 

3 inch 1050 inch-pounds 

(d) Have a capacity not less than that specified in the following table for 0.60 Specific 
Gravity, 1000 BTU Per Cubic Foot Gas at 1.0 inch water column pressure drop. 

NOMINAL PIPE SIZE MINIMUM CAPACITX 

»/2inch 260,000 BTU Per hour 

3/4 inch 698,000 BTU Per hour 

1 inch 1,1 92,000 BTU Per hour 
Wa inch 1,768,000 BTU Per hour 
P/zinch 3,097,000 BTU Per hour 

2 inch 5,346,000 BTU Per hour 
21/2 inch 6,859,000 BTU Per hour 

3 inch 11,923,000 BTU Per hour 

(e) Each valve shall be marked in a conspicuous place with the manufacturer's name or 
trademark. 

(Testing procedures for 5. 12(b), (c), and (d) shall be consistent with those outlined in the 
American National Standard for Manually Operated Gas Valves). 

(9) After NFPA-54 section 5.13 add a new section 5. 14 as follows: 

5.14 Installation of Consumer-owned Gas Pressure Boosters. 

(a) When Special -permission has been granted by the Board and the serving gas supplier 
has granted its approval, consumer owned gas pressure boosters may be installed in that 
portion of the gas piping system extending from the outlet of the meter set assembly to 
the inlet of the equipment requiring the elevated pressure. 

(b) Hermetically Sealed: Gas pressure boosters shall be of the hermetically sealed type. 
Any exception to this provision shall be noted in the applicant's Special-Permission 
request to the Board. 

3/11/05 248 CMR -36 



5.03: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(c) Proper Location: 

1 . Gas pressure boosters shall be installed on a firm foundation or concrete floor and 
shall be free of vibration. 

2. Gas pressure boosters shall be located in well-ventilated spaces and readily 
accessible for examination, replacement or necessary maintenance. 

(d) Underpressure Protection Device: A manual reset low pressure shutoff device shall 
be installed between the gas pressure booster and the gas meter to protect against a 
reduction in supply pressure lower than that acceptable to the serving gas supplier. 

(e) Additional Provisions: 

1 . Gas pressure boosters shall be installed and maintained in accordance with the 
manufacturer's instructions. 

2. The gas equipment for which the booster is required, shall be equipped with a 
properly set, low gas pressure switch that will prove the correct pressure is available 
before startup. 

3. Check valves shall be installed to prevent the increased pressure from 
pressurizing the system upstream of the booster. Where bypasses are installed they 
shall include a shutoff valve and a check valve. 

4. A pressure regulator to maintain a constant outlet pressure shall be installed 
immediately downstream of the booster (exception: not required if the booster has 
an integral pressure regulator). 

5.04: Modifications to NFPA-54. Chapter 6 

(1) After NFPA-54 section 6.1.6 add a new sub-section 6.1.6.1 as follows; 

Minimum Size: Threaded gas piping underground shall be % inch iron pipe size on low- 
pressure gas systems. Installation shall conform to Section 6.1 Piping Underground. 

(2) After NFPA - 54 section 6.3.1 add a new sub-section 6.3. 1. 1 as follows: 

Minimum Size: No gas piping smaller than standard Yi inch iron pipe size shall be installed 
in any concealed location. 

(3) After NFPA -54 section 6.3.4 add a new section 6.3.4.1 as follows: 



CSST installed vertically and horizontally in concealed wall spaces or partitions of 2 X 4 
construction that does not penetrate the walls, floors or partitions shall be protected in 
accordance with 248 CMR 5.04: Table Il-a. 







Table II- a 


Profection of 
Tubing Orientation 


CSST Tubing Installed in Concealed Wall Spaces of 2 X 4 Construction 


Insulation 


Tubing Size 


and Location 


Type 


< 1-inch 


> 1-inch 


Vertical Interior 


None 


1. Single runs only. 


Same as CSST < in and CSST 


Wall 




2. Tubing not secured to structure. 


manufacturer specified 






3. CSST manufacturer specified 


shielding device along entire 






strilce plates at points of penetration. 


length in concealed space. 






4. CSST Strike plates on both sides 








of wall. 




Horizontal Interior 


None 


CSST manufacturer specified shielding device along length between 


Wall 




studs and strike plates at points of penetration on both sides of wall. 


Vertical Exterior 


Non-Rigid 


1. Single runs only. 


Same as CSST < in and CSST 


Wall 


(Fiberglass) 


2. Tubing not secured to structure. 


manufacturer specified 






3. Tubing installed between insula- 


shielding device along entire 






tion and wall board. 


length in concealed space. 






4. CSST manufacturer specified 








strike plates at points of penetration 




Vertical Exterior 


Rigid 


Schedule 40 pipe or CSST manufacturer specified shielding device 


Wall 




along entire length and at points of penetration. 



3/11/05 



248 CMR - 37 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.05: Modifications to NFPA-54. Chapter 7 

(1) Revise NFPA-54 section 7.1 as follows: 

Pressure Testing and Inspection: 

(a) Inspection of the rough gas system: Inspections shall conform to the requirements 
of 248 CMR 3.00 in addition to the following: 

1. Before any gas piping system is put into service, it shall be tested in the presence 
of the Inspector to insure that it meets the requirements of 248 CMR. Where any 
part of the gas piping system is to be enclosed or concealed, the test shall be 
conducted prior to the covering of any portion of the gas piping system. The test 
medium shall be air or other inert gas {e.g. nitrogen, carbon dioxide). OXYGEN 
SHALL NEVER BE USED. 

2. Gas piping systems, not in excess of Vi P.S.I.G. or 14 inches water column, 
extending from the outlet of the meter set assembly to the closed shutoff valve of 
each appliances shall withstand a pressure of at least six inches mercury or three 
pounds gauge for a period of not less than ten minutes without showing any drop in 
pressure. Pressure shall be measured with a mercury manometer, slope gauge or an 
equivalent device so calibrated as to be read in increments of not greater than 1/10 
pound. The source of pressure shall be isolated before the pressure tests are made. 

3. If an additional appliance is connected to a gas piping system previously installed, 
the additional piping shall be isolated and tested to a pressure of at least six inches 
of mercury or three pounds gauge for a period of not less than ten minutes without 
showing any drop in pressure and the remainder of the piping system previously 
installed may be tested to not more than three inches of mercury or 1 Vz pounds gauge 
for a period of not less than ten minutes without showing any drop in pressure. 

4. Gas piping systems for industrial and other large installations shall be tested at 
a pressure at least ten times (maximum 100 P.S.I.G.) the proposed maximum 
working pressure. Test duration shall be long enough to determine if there are any 
leaks but not less than one hour for each 100 linear feet of pipe or fraction thereof. 
The duration of the test need not exceed 24 hours irrespective of system design. 

5. Gas piping systems for undiluted liquefied petroleum gases. Such gas piping 
systems shall be tested at a pressure no less than IV2 times the proposed working 
pressure, but not less than three P.S.I.G. for not less than ten minutes without the 
gauge showing any drop in pressure, irrespective of design pressure. 

6. All piping before the. second stage low pressure regulator in undiluted liquefied 
petroleum gas systems shall be tested using a pressure not less than the maximum 
operating pressure of the tank or container, for a period of not less than ten minutes 
without any drop in pressure. 

(b) Inspection of Final Gas System: 

1. After the test of the rough piping for tightness as described in 248 CMR 
5.05(l)(a) gas may be turned on and appliances tested at normal operating pressure 
by means: 

a. of a non-corrosive foaming agent test; or 

b. by the use of an electronic leak detector. 

2. Following the testing and approval of a gas system, the Inspector shall attach a 
permanent tag in a conspicuous place indicating that the system has passed 
Inspection. 

5.06: Modifications to NFPA-54. Chapter 8 

( 1 ) Revise NFPA-54 section 8 . 1 . 1 as follows : 

Appliances, Accessories and Equipment to comply with Standard Requirements. All gas 
appliances, accessories and gas utilization equipment shall comply as follows. 

(a) All residential and commercial appliances shall be listed by a nationally recognized 
testing agency, constructed in accordance with applicable American National Standards 
Institute (ANSI), and Product-approved by the Board. 



3/11/05 . 248 CMR -38 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.06: continued 



(b) Commercial and industrial equipment that is not certified by a nationally recognized 
testing agency acceptable to the Board shall not be installed unless Special-permission 
has been granted by the Board or the Lispector has granted his or her approval prior to 
the installation. Such installation, if allowed, shall be in accordance with NFPA-54 
Chapter 1 1 entitled Procedures for the Initial Operation of Industrial Gas Equipment as 

., modified by 248 CMR 5.09. 

(c) A List of Reference Standards acceptable to the Board is provided in Appendix A 
of NFPA-54. It may be referred to for the installation of specific equipment. 

(2) Add new NFPA-54 section 8. L 10.4: 

Direct Vent Appliances, as defined in Section 3.3.68, may be installed. 

(3) Add the following language after the last paragraph of NFPA-54 section 8.1. II. 2: 
Exception No. 3: Direct Vent Appliances, as defined in Section 3.3.68 may be installed. 

(4) Revise NFPA-54 section 8.1.22 as follows: 

(a) The installing agency shall conform to the equipment manufacturers specific 
recommendations in completing an installation that will provide satisfactory performance and 
semceability. 

(b) The installing agency shall also leave the manufacturer's installation, operating and 
maintenance instructions in a location at the premises where they will be readily available 
for reference and guidance of the authority having jurisdiction, the Inspector, serviceperson 
and the owner or operator. 

(c) When required by the Inspector, a copy of the manufacturer's installation, operating and 
maintenance instructions shall be given to said authority for review within two working days 
prior to calling for a fmal Inspection. 

(5) Revise NFPA-54 8.5.1 as follows: Add to sub-section (3) as follows: 

(a) In addition to being Product-approved under 248 CMR 3.00, flexible appliance 
connectors shall meet the requirements of ANSI Z21.24 and shall be approved by a 
nationally recognized testing agency recognized by the Board. 

(b) The maximum length of a connector shall not exceed 36 inches. 

(c) A flexible connector shall not be installed where it will be subject to physical or thermal 
damage. 

(d) A flexible appliance connector shall not be used on gas pressure in excess of V2 pound 
per square inch gauge (P.S.i.G.). 

(e) An accessible shutoff valve shall be located on rigid piping upstream of a flexible 
connector. 

(f) Only one flexible connector shall be used for connecting each appliance. 

(g) A flexible connector shall not be re-used except for disconnecting and reconnecting the 
original appliance for servicing. 

(h) A flexible connector shall not extend from one room to another nor pass through any 
walls, partitions, ceilings or floors. 

(6) Revise NFPA-54 section 8.5.4 as follows: Add at the end 

Laboratories or similar spaces in Schools, Colleges, Universities or similar occupancies or 
classrooms where gas burning laboratory type equipment is used by students shall be 
equipped with a single readily accessible emergency master shutoff valve located within the 
laboratory or space. This valve shall be kept closed except during periods of equipment use. 
This provision shall also apply whenever alterations to existing gas systems are made. 



3/11/05 248 CMR -39 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



5.07: Modifications to NFFA-54. Chapter 9 

(1) Revise NFPA-54 section 9.1 by adding the following last sentence: 

Unlisted equipment or accessories shall be prohibited unless Product-approval is granted by 
the Board or the Inspector. 

(2) Revise NFPA-54 section 9. 1.2 by replacing it with the following language: 

Gas utilization equipment shall not be installed so its combustion, ventilation and dilution 
air is obtained from a bedroom or bathroom. EXCEPTION: Type 1 dryers may be installed 
in bathrooms when air for combustion and ventilation is introduced to the space according 
to the following: 

(a) The minimum size of the single air intake shall be equal to the size of the exhaust 
vent of the di7er. 

(b) The air for combustion shall not be obtained from a bedroom or bathroom. 

(c) The air for combustion shall be obtained from a space that is sized according to 8.3. 

(d) The dr)'er is installed according to 9.4. 

(3) Revise NFPA-54 9.6. 1 by replacing it to read as follows: 

Decorative appliances for installation in vented fireplaces that are installed in bedrooms or 
bathrooms shall be of the type that obtain all air for combustion directly from the outdoors. 
When decorative appliances are installed in vented fireplaces, the flue damper must be 
removed or welded in a fully open position. 

(4) Revise NFPA-54 section 9.7.1 to read as follows: 

Vented gas fireplaces that are installed in bedrooms or bathrooms shall be of the types and 
design that obtain all air for combustion directly from the outdoors. 

(5) Revise NFPA-54 section 9.8.1 by adding a second sentence as follows: 

The specifications for Non- Re-circulating Direct Gas-fired Industrial Air Heaters shall 
require that there be no more than 50 P.P.M. of Carbon Monoxide in the total volume of air 
discharged from the unit. 

(6) Revise NFPA-54 section 9.8.2 to read as follows: Non-Re-circulating Direct Gas-fired 
Industrial Air Heaters shall not be used to supply any area containing sleeping quarters or places 
of public assembly. These units are intended for use in industrial and commercial occupancies, 
such as commercial kitchens, factories, and warehouses where there is direct relief. All other 
installations require Special-perjmission by the Board. 

(7) After NFPA-54 section 9.9. 1 add a new sub-section 9.9. 1 . 1 as follows: 

The specifications for Re-circulating Direct Gas-fired Industrial Air Heaters shall require that 
there be no more than 50 P.P.M. of Carbon Monoxide in the total volume of air discharged 
from the unit. . 

(8) Revise NFPA-54 section 9.9.2.1 to read as follows: 

Re-circulating Direct Gas-fired Industrial Air Heaters shall not be used to supply any area 
containing sleeping quarters or places of public assembly. These units are intended for use 
in industrial and commercial occupancies, such as factories and warehouses where there is 
direct relief. All other installations require Special-permission by the Board. 



3/11/05 248 CMR -40 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.07: continued 

(9) After NFPA-54 section 9.12.8 add a new section, 9. 12.9 as follows: 

Thermally Actuated Gas Shutoff Valves Used for Commercial Cooking Equipment (In-Line 
Gas Valves). 

When in-line gas valves are used in junction with a fire protection/suppression system, 
the installation of these valves shall conform to the following: 

(a) Only a licensed plumber or gas fitter shall install an in-line gas valve in new or 
existing gas piping for the purpose of shutting off the gas supply to commercial cooking 
equipment. 

(b) All in-line gas valves shall be mechanical type with manual reset and shall be 
installed in close proximity to the cooking equipment and shall shut off the gas supply 
to the equipment served by the hood and duct system protected by the 
extinguisher/suppression system. 

(c) A plan of the 'Mechanical Fuel Shutoff System" shall be submitted to the Inspector 
prior to any installation. 

(d) If a wiring and gas piping plan in which an electrically operated gas valve is 
necessary for certain equipment it shall be submitted to the Board for Special-permission. 
When Special-permission has been granted by the Board, a copy of this plan shall be 
submitted to the Inspector. 

(e) When an in-line gas valve is used in conjunction with a fire prevention suppression 
system, a permanent notice shall be posted at the reset device and gas meter or propane 
regulator cautioning the operator to shut off the gas to all appliances before resetting the 
device. 

(f) Actuation of the in-line gas valve shall be made in the presence of the Inspector at 
the time of the gas piping tests. 

(g) An annual inspection certificate shall be submitted to the. Inspector certifying that 
the in-line gas valve is in working condition. 

(h) In any case not covered by these provisions, contact the Board for a ruling. 

(10) Add a new NFPA-54 section 9.12.10 as follows: 

Unlisted Food Service Equipment or accessories shall be prohibited unless Product-approved 
by the Board. 

(a) The use of gas range ovens, broilers, or top burners for space heating shall be 
prohibited. 

(b) The installation of gas ranges with match-lit ovens shall be prohibited. 

(c) The installation of any listed or unlisted commercial cooking range without a listed 
type oven safety pilot shall be prohibited. 

(1 1) Revise and replace NFPA-54 section 9.23.1 as follows: 

(a) Prohibited Installations: Unvented room heaters shall not be installed in bathrooms 
or bedrooms. 

(b) Only direct vented appliances, (see definition 3.3.68) shall be installed in sleeping 
quarters, bedrooms and bathropms and shall be installed in accordance with 248 CMR 
3.00 though 7.00. 

(12) After NFPA-54 section 9.23.4 add a new section. 9.23.5 as follows: 

Un-vented Room Heaters shall be installed in accordance with 527 CMR 30.00 and 
248 CMR 3.00 through 7.00: 

(a) Permits and Inspections: In addition to complying with 248 CMR 3.05 the following 
requirements must be satisfied; 

1 . A permit shall be obtained from the head of the fire department and the local or 
state gas inspector having jurisdiction for the installation of all unvented propane or 
natural gas-fired space/room heaters. 



3/11/05 248 CMR -41 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.07: continued 



2. The permits shall be conditioned upon final inspection and approval of 
installation by the head of the fire department and the local or state gas inspector 
having jurisdiction. 

3. A copy of the manufacturer's installation/operating literature shall be submitted 
with each permit application. 

4. Before operation, the Head of the Fire Department and the local or state gas 
inspector shall inspect the installation for compliance with 527 CMR (Board of Fire 
Prevention Regulations) and 248 CMR (Board of State Examiners of Plumbers and 
Gas Fitters). 

5. A final inspection by the state or local gas inspector of the unvented space/room 
heater shall not be performed until proof is provided that the head of the fire 
department having jurisdiction has granted a permit. 

(b) Unvented propane or natural gas-fired space/room. heaters shall conform to ANSI 
Z21.11.2, be equipped with an oxygen depletion safety (ODS) shuioff system and be 
Product-approved in accordance with 248 CMR. 

(c) Unvented propane or natural gas-fired space/room heaters shall be installed in 
accordance with their listings and the manufacturer's instructions. Proper clearances to 
combustibles shall be maintained. In no case shall the clearances be such as to interfere 
with combustion air and accessibility. 

(d) Installations shall be of a permanent type, with a permanently piped fuel supply in 
accordance with 248 CMR. LPG appliances shall be subject to the storage requirements 
in accordance with 527 CMR 6.00. Portable unvented propane or natural gas-fired 
space/room heaters shall be prohibited. 

(e) Unvented propane or natural gas-fu-ed space/room heaters shall be prohibited in 
bedrooms and bathrooms. 

(f) Space/room heaters shall be properly sized for the room or space of installation, but 
shall not exceed a maximum of 40,000 BTU input per room or space. 

(g) In occupancies with an unvented propane or natural gas-fired space/room heater, no 
less than one listed carbon monoxide detector that is installed in accordance with the 
manufacturers instructions shall be installed and maintained near the space where the 
heater is located. 

1 . Any building wherein the heater is to be installed shall, as a precondition to such 
installation, have working smoke detectors installed and maintained in accordance 
with the requirements of 780 CMR (State Board of Building Regulations and 
Standards) in effect at the time of construction or; 

2. If no requirement was in effect at the time of construction the smoke detector 
shall be compliant and installed as provided for in M.G.L. c. 148, § 26E. 

(h) In rooms and buildings served by an unvented propane or natural gas-fired 
space/room heater, a primary source of heat, which is operable, shall be permanently 
installed and maintained in the building in accordance with 105 CMR (Department of 
Pubhc Health). 

(i) Sellers of unvented propane or natural gas-fired space/room heaters shall provide to 
each purchaser a copy of 527 CMR 30.00 upon sale of the unit. 

(13) After NFPA-54 section 9.24 add the following new sub-sections: 

(a) 9.24.1 Solenoid Valve: Gas engines shall be equipped with an automatic solenoid 
gas valve electrically connected to the ignition circuit of the engine that closes whenever 
the engine stops running. 

(b) 9.24.2 Flexible connectors: 

1 . Engines operating at gas pressure of 1 5 P.S .I.G. or less connected to generator of 
1 5 KW or less may use a flexible neoprene hose bearing the manufacturer's name and 
acceptance for LP. or Natural Gas service. 

2. Engines operating at gas pressures above 1 5 P.S.I.G. connected to generators with 
an output of 15 KW or more shall use a Product-approved flexible connector. 



3/11/05 248 CMR -42 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



5.07: continued 

(c) 9.24.3 Fuel Supply: Fuel lines to gas engines shall be supplied only from hard case 
gas meters. 

(d) 9.24.4 Emergency power generators for life safety purposes shall be installed 
according to the following: 

1. A dedicated fuel line shall be installed for the emergency power generator 
immediately downstream of the meter assembly or shut off valve (if no meter is 
provided). 

2. The fuel line for the emergency power generator and the fuel line for the 
remaining appliances shall have shut off valves installed immediately downstream 
of the meter fit to enable each line to operate independently. 

3. The installation of pressure regulators, if required, shall enable each fuel line to 
operate independently and not adversely affect the gas pressure of the other fuel line. 

4. The fuel line for the emergency power generator shall be labeled at: 

a. the shutoff valve, 

b. on each side of the wall, floor or roof penetration, and 

c. every ten feet with the following: 

WARNING: Emergency Power Generator for Life Safety Systems. Do not shut 
off without the approval of appropriate aiithorities. 

(14) Add a new NFPA-54 section 9.32 as follows: 

Gas-fired Kilns . Gas-fired Kilns shall not be installed until after Special-permission under 
248 CMR 3.00 has been granted by the Board. 

5.08: Modifications to NFPA-54. Chapter 10 

(1) Revise NFPA-54 section 10.5.4.2 by adding a second exception as follows: 

Existing chimneys shall be permitted to have their use continued when a gas conversion 
burner is installed, and shall be equipped with a manually reset device that will automatically 
shut off the gas to the burner in the event of a sustained back-draft. 

(2) Revise 10.8.3 by adding the following additional requirements: 

(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, 
building or structure used in whole or in part for residential purposes, including those owned 
or operated by the Commonwealth and where the side wall exhaust vent termination is less 
than seven feet above finished grade in the area of the venting, including but not limited to 
decks and porches, the following requirements shall be satisfied: 

1. INSTALLATION OF CARBON MONOXIDE DETECTORS . At the time of 
installation of the side wall horizontal vented gas fueled equipment, the installing 
plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an 
alarm and battery back-up is installed on the floor level where the gas equipment is to be 
installed. In addition, the installing plumber or gasfitter shall observe that a battery 
operated or hard wired carbon monoxide detector with an alarm is installed on each 
additional level of the dweUing, building or structure served by the side wall horizontal 
vented gas fueled equipment. It shall be the responsibility of the property owner to secure 
the services of qualified licensed professionals for the installation of hard wired carbon 
monoxide detectors 

a. In the event that the side wall horizontally vented gas fueled equipment is 
installed in. a crawl space or an attic, the hard wired carbon monoxide detector with 
alarm and battery back-up may be installed on the next adjacent floor level. 

b. In the event that the requirements of this subdivision can not be met at the time 
of completion of installation, the owner shall have a period of 30 days to comply with 
the above requirements; provided, however, that during said 30 day period, a battery 
operated carbon monoxide detector with an alarm shall be installed. 

2. APPROVED CARBON MONOXIDE DETECTORS . Each carbon monoxide 
detector as required in accordance with the above provisions shall comply with NFPA 
720 and be ANSI/UL 2034 listed and L\S certified. 

12/30/05 248 CMR -43 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.08: continued 

3. SIGNAGE . A metal or plastic identification plate shall be permanently mounted to 
the exterior of the building at a minimum height of eight feet above grade directly in line 
with the exhaust vent terminal for the horizontally vented gas fueled heating appliance 
or equipment. The sign shall read, in print size no less than Vz inch in size, "GAS VENT 
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS". 

4. INSPECTION . The state or local gas inspector of the side wall horizontally vented 
gas fueled equipment shall not approve the installation unless, upon inspection, the 
inspector observes carbon monoxide detectors and signage installed in accordance with 
the provisions of 248 CMR 5.08(2)(a)l through 4. 

(b) EXEMPTIONS : The following equipment is exempt from 248 CMR 5. 08(2)(a)l. 
through 4.: 

1. The equipment listed in Chapter 10 entitled "Equipment Not Required To Be 
Vented" in the most current edition of NFPA 54 as adopted by the Board; and 

2. Product Approved side wall horizontally vented gas fueled equipment installed in a 
room or structure separate from the dwelling, building or structure used in whole or in 
part for residential purposes. 

(c) MANUFACTURER REOUIREMENTS - GAS EOUIPMENT VENTING SYSTEM 
PROVIDED . When the manufacturer of Product Approved side wall horizontally vented gas 
equipment provides a venting system design or venting system components with the 
equipment, the instructions provided by the manufacturer for installation of the equipment 
and the venting system shall include: 

1 . Detailed instructions for the installation of the venting system design or the venting 
system components; and 

2. A complete parts list for the venting system design or venting system. 

(d) MANUFACTURER REOUIREMENTS - GAS EOUIPMENT VENTING SYSTEM 
NOT PROVIDED . When the manufacturer of a Product Approved side wall horizontally 
veiited gas fueled equipment does not provide the parts for venting the flue gases, but 
identifies "special venting systems", the following requirements shall be satisfied by the 
manufacturer: 

1. The referenced "special venting system" instructions shall be included with the 
appliance or equipment installation instructions; and 

2. The "special venting systems" shall be Product Approved by the Board, and the 
instructions for that system shall include a parts list and detailed installation instructions. . 

(e) A copy of all installation instructions for all Product Approved side wall horizontally 
vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, 
and/or all venting design instructions shall remain with the appliance or equipment at the 
completion of the installation. 

(3) After NFPA-54 section 10.10.4.2 add a new section 10.10.4.3 as follows: 

When more than four gas appliances are to be vented through a common gas vent or common 
horizontal vent manifold, a plan of the proposed vent installation shall be submitted to the- 
Inspector and the serving gas supplier for review and approval. 

5.09: Modifications to NFPA-54. Chapter 1 1 

After NFPA-54 section 11.7 add new 11.8 in sections as follows: 

Procedures for Initial Operation of Industrial Gas Equipment as defined in 248 CMR 7.01: 

(1) 11.8.1 General: 

(a) The following procedures are to be followed in connection with initial operation of 
gas equipment, necessary adjustments, development of operating instructions, instruction 
of the operator in the safe and satisfactory use of the equipment and required acceptance 
tests. 

(b) An authorized representative of the gas equipment manufacturer shall be used to 
start, light, and adjust burners, mixers, flames, blowers, temperature controls and safety 
devices. 



12/30/05 248 CMR -44 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



5.09: continued 



(2) 1 1.8.2 New Gas Equipment Procedures: 

(a) Before initial start, it shall be determined by physical check that all protective 
devices are connected and operative, the installation is in all respects capable of safe 
operation, the equipment has been purged in accordance with manufacturer's instructions, 
and that all concerned persons have been notified. 

(b) Initial Start-up and Final Adjustments. An authorized representative of the gas 
equipment manufacturer shall perform the initial start up, final adjusting and testing of 
the burner and controls in the presence of the Inspector and a gas company 
representative. 

(c) Operation: Installed protective devices shall be tested under operating conditions as 
promptly as possible to determine that they are functioning properly. Other instruments 
and controls should also be tested in the same manner. Gas equipment shall be shut 
doWn immediately if any defect is noted during initial start-up or operation. Defects 
shall be corrected before the equipment is again started. In shutting down equipment, 
manufacturers instructions and applicable safety requirements shall be followed. 

(d) Adjustments: Adjustments to burners, pilots, ignition devices, safety devices, and 
controls shall be made in accordance with manufacturer's instructions and applicable 
safety requirements. 

(3) 11.8.3 Operating Instructions: Operating instructions, as supplied by equipment 
manufacturers, shall be assembled and integrated into a system, delivered to the user, and the 
operator instructed in their use in order to assure safe and satisfactory operation of the 
equipment. 

(4) 11.8.4 Acceptance Tests: Acceptance tests shall be conducted if necessary to establish 
compliance with applicable codes or requirements of the Inspector. 



REGULATORY AUTHORITY 

248 CMR 5.00: M.G.L. c. 1 12, § 61; M.G.L. c. 142, §§ 13 and 21. 



12/30/05 248 CMR -44.1 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



12/30/05 248 CMR - 44.2 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




(248 CMR 6.00: RESERVED) 



3/11/05 248 CMR -45 



248 CMR: BOARD OF STATE EXAAllNERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



3/1 1/05 248 CMR - 46 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 7:00: MASSACHUSETTS CODE FOR GAS UTILIZATION EQUIPMENT IN LARGE 

BOILERS 

Section 



7.01 
7.02 
7.03 
7.04 
7.05 



Scope and Purpose 

Definitions 

General Provisions 

Installation of Burners and Controls 

Initial Start-up and Final Adjustments 




7.01: Scope and Purpose 

248 CMR 7.00 covers gas utilization equipment in commercial and industrial boilers having 
inputs over 400,000 BTU per hour per combustion chamber except: gas designed atmospheric 
multiple burner type boilers and water-tube boilers having outputs of 10,000 pounds of steam 
per hour (approximately 12,500,000 BTU per hour input) or more.* 

7.02: Defmitions 

As used in 248 CMR 7.00: 

Air Shutter . An adjustable device for varying the size of the air inlet or inlets regulating primary 
or secondary air. 

Boiler, High-pressure . A boiler furnishing steam at pressure in excess of 15 psi or hot water at 
temperatures in excess of 250°F or at pressures in excess of 160 psi. 

Boiler. Low-pressure Hot Water and Low-pressure Steam . A boiler furnishing hot water at 
pressures not exceeding 160 P.S.I.G. and at temperatures not more than 250°F or steam at 
pressures not more than 15 P.S.I.G. 

Breeching . (See Chimney Connector.) 

Burner . A device for the final conveyance of the gas, or a mixture of gas and air to the 
combustion zone. 

(a) Injection (Bunsen) Type Burner . A burner employing the energy of a iet of gas to inject 
air for combustion into the burner and mix it with the gas. 

(b) Atmospheric Injection Type Burner . A burner in which the air at atmospheric pressure 
is injected into the burner by a jet of gas. 

(c) Luminous or Yellow Flame Burner . A burner in which secondary air only is depended 
on for combustion of the gas. 

(d) Power Burner . A burner in which either gas or air or both are supplied at pressures, 
exceeding, for gas, the line pressure and, for air, atmospheric pressure; this added pressure 
being applied at the burner. A burner for which air for combustion is supplied by a fan ahead 
of the appliance is commonly designated as a forced draft burner. 

(e) Premixing Burner . A power burner in which all or nearly all of the air for combustion 
is mixed with the gas as primary air. 

(f) Induced Draft Burner . A burner which depends on the draft induced by a fan beyond the 
appliance for its proper operation. 

(g) Pressure Burner . A biuner which is supplied with an air-gas mixture under pressure 
(usually from 0.5 to 14.0 inches of water and occasionally higher). 

Burner Head . That portion of a burner beyond the outlet end of the mixer tube which contains 
the ports. 

Burner, Automatica:Ilv Lighted . One where fuel to the main burner is normally turned on and 
ignited automatically. 

* See NFPA No. 8501-1992 and NFPA No. 85C-1991 for Water - Tube Boilers having outputs 

of 10,000 pounds of steam or more. 

3/1 1/05 248 CMR - 47 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.02: continued 



Burner, Manually Lighted . One where fuel to the main burner is turned on only by -hand and 
ignited under supervision. 

Chimney . A vertical shaft enclosing one or more flues for conveying flue gases to the outside 
atmosphere. 

(a) Factory-built Chimney . A listed chimney. 

(b) Masonry Chimney . A chininey of solid masonry units, bricks, stones, listed masonry 
chimney units or reinforced concrete, lined with suitable flue liners. 

(c) Metal Chimney . A field-constructed chimney of metal. 

Chimney Connector . The pipe which connects a fuel-burning appliance to a chimney. 

Combustion . The rapid oxidation of fuel gases accompanied by the production of heat or heat 
and light. 

Combustion Control . A control which automatically regulates the firing rate at predetermined 
air-fuel ratios in accordance with load demand. 

(a) High-low Firing . The action of a combustion control which positions the air and fuel 
supply for low-fire and for high-fire in accordance with load demand. 

(b) Modulating . The action of a cornbustion control which gradually varies the air and fuel 
supplies within limits in accordance with load demand. 

Combustion (Inpuf) Control Valve . An. automatic gas-control valve for regulating boiler input. 

Combustion Products . Constituents resulting from the combustion of a fuel gas with the oxygen 
of the air, including die inerts, but excluding excess. air. 

Condensate . The liquid which separates from a gas (including flue gases) due to a reduction in 
temperature. 

Controls . Devices designed to regulate the gas, air, water or electrical supply to a boiler. These 
may be manual, semi-manual, semi-automatic or automatic. 

Control, Limit . An automatic control responsive to changes in liquid level; in fuel, steam or air 
pressure; in air, gas or liquid flow; or in temperature; for limiting the operation of the controlled 
equipment. 

Control. Primary Safety . A control responsive directly to flame properties; sensing the presence 
of flame and causing fuel to be shut off in the event of ignition or flame failure requiring manual 
reset. 

Control. Safety . Automatic controls and interlocks (including relays, switches, and other 
auxiliary equipment used in conjunction therewith to form a safety control system which are 
intended to prevent unsafe operation of the controlled equipment). 

Damper . A valve or plate for controlling draft or flow of the flue gases. A damper is generally 
considered as being located on the downstream side or the combustion chamber usually in a flue 
passage of the appliance or in the chimney or vent connector. 

Damper, Automatically Operated . A damper operated by an automatic control. 

Damper, Manually Operated . An adjustable damper manually set and locked in the desired 
position. 

Draft Regulator. Barometric . A device which functions to maintain a desired draft in the 
appliance by automatically reducing the chimney draft to the desired value. 

Flame Safeguard . {See Control, Primary Safety.) 



3/11/05 248 CMR -48 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.02: continued 

Flue Gases . Products of combustion and excess air. 

Interlock . A device to prove the physical state of a required condition, and to furnish that proof 
to the primary safety control circuit. 

Labeled . Equipment or materials to which has been attached a label of a nationally recognized 
testing laboratoiy that maintains periodic inspection of production of labeled equipment or 
materials and by whose labeling is indicated compliance with nationally recognized standards 
or has been tested and found safe for use in a specified manner. 

Listed . Equipment or materials included in a hst published by a nationally recognized testing 
laboratory that maintains periodic inspections of production of listed equipment or materials and 
whose listing states either that the equipment or material meets nationally recognized standards 
or has been tested and found safe for use in a specified manner. 

Low-fire Start. Proven . The firing of a burner with fuel and combustion air controls interlocked 
in a low-fire position to provide safe operatmg conditions during light off. 

Lubricated Plug-type Valve . A valve of the plug-and-barrel type designed for maintaining a 
lubricant between the bearing surfaces. 

Main Burner Flame-establishing Period . The length of time the main burner flue safety shutoff 
valves are permitted to be open before the flame sensing device is required to supervise the main 
burner flame. 

Optimum Air-fuel Ratio . A ratio of air to fuel going to the furnace which will provide complete 
combustion of the fuel with sufficient range of excess air to maintain a stable flame envelope. 

Pilot . A flame which is utilized to ignite the gas at the main bumer or burners. 

Pilot, Continuous . A pilot that bums without turndown throughout the entire time the burner is 
in service, whether the main bumer is firing or not. 

Pilot. Expanding . A continuously burning pilot that is automatically expanded so as to reliably 
ignite the main bumer. This pilot may be tumed down at the end of the main bumer flame- 
establishing period. 

Pilot Flame-establishing Period . The length of time fuel is permitted to be delivered to a proved 
pilot before the flame sensing device is required to detect pilot flame. 

Pilot. Intermittent . A pilot which is automatically lighted each time there is a call for heat. It 
bums during the entire period that the main bumer is firing. 

Pilot Intemipted . A pilot which is automatically lighted each time there is a call for heat. The 
pilot fuel is cut off automatically at the end of the main bumer flame-establishing period. 

Pilot. Proved . A pilot flame supervised by a primary safety control. 

Purge . To introduce air into the combustion chamber and boiler passes in such volume and 
manner as to completely replace the air or gas-air mixture contained therein. 

Regulator. Gas Pressure . An automatic gas pressure reducing device for the purpose of 
maintaining a uniform gas supply pressure. 

Safety Shutdown . The action of shutting off ail fuel and ignition energy to the appliance by 
means of a safety control or controls such that restart cannot be accomplished without manual 
reset. 



3/11/05 248 CMR -49 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.02: continued 



Safety Shutoff Valve . A gas-control valve that is automatically closed by the safety control 
system or by an emergency device. The valve may be of the automatically or manually opened 
type. 

Throttling . {See "Modulating" under Combustion Control.) 

Trial-for-ignition Period . {See Main Burner Flame-establishing Period.) 

Zero Governor . A regulating device which is normally adjusted to deliver gas at atmospheric 
pressure within its flow rating. 



7.03: General Provisions 



(1) Special-permission Required : Special-permission from the Board is required before 
installatior) of any all gas-fired boilers, burners, or their accessories. 

(a) In determining acceptability, the Board would normally base acceptance on compliance 
with the appropriate Boiler Code and 248 CMR 7.00. 

(b) The Board of State Examiners of Plumbers and Gas Fitters may also refer to the listings 
or labeling practices of nationally recognized testing laboratories, i.e., laboratories qualified 
and equipped to conduct the necessary tests, in a position to determine compliance with 
appropriate standards for the current ' production of listed items, and the satisfactory 
performance of such equipment or materials in actual usage; or the recommendations of a 
nationally recognized engineering agency specializing in. the field of safety to life and 
property. 

(c) Before aiianging for the selection or mstallation of a large gas burner or boiler, the 
licensed plumber or gas fitter shall check with the serving gas supplier as to the availability 
of gas, specifying the gas input rating and the gas pressure required at the entrance to gas 
train. {See Figure 3 in 248 CMR 7.02). 

(d) As required in 248 CMR 3.00, a written permit in a form and manner prescribed by the 
Inspector shall be obtained by persons performing gas fitting work as defined in M.G.L. 
c. 142 before commencing each installation. 

(2) Combustion Air Supply and Ventilation . 

(a) General . 

1 . Positive means for supplying an ample amount of outside air to permit combustion 
of the gas shall be provided. Automatic or manually adjustable control devices for 
outside air intake shall be interlocked with the burner. 

2. To determine air requirements at the boiler, under standard atmospheric conditions 
(60°F and 30 inches mercury), the following minimum factors apply: 

a. For boilers with draft hoods - 30 cubic feet per 1000 Btu input; 

b. or boilers directly connected to a chimney without neutralizing air openings - 12 
cubic feet per 1000 Btu input. 

3. When a boiler is located in an inside room or space, air supply shall be provided 
through ducts or openings leading to the outside air. 

4. Openings to the outside shall be unobstructed and screens, if used, shall have a 
minimum of Vz inch mesh. 

5. When a room or space in which a boiler is installed is ventilated by mechanical 
means, air sufficient to replace that exhausted and consumed by combustion shall be 
supplied from a safe, uncontarmnated source. The means for ventilation shall not create 
an unsafe pressure condition in the boiler room. 

6. In addition to the combustion air required, sufficient air shall be supplied to the boiler 
room to make the room safe for occupancy and proper operation of equipment. 

(b) Boilers Equipped with Draft Hoods . 

1 . The effective cross-sectional area of the permanent outside air opening(s) to the 
boiler room shall be large enough to supply the air required in the boiler room. 



3/11/05 248 CMR -50 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.03: continued 



2. For supplying combustion air, the area of the opening shall be of a size at least equal 
to the boiler(s) breeching but not less than one square inch of free area per 5,000 Btu per 
hour input (approximately equal to 1,4 square feet per million Btu), except as noted in 
248CMR7.01(2)(e). 

(c) Boilers with Barometric Dampers . 

1. The effective cross-sectional area of the permanent outside air opening(s) to the 
boiler room shall be lai-ge enough to supply the air required in the boiler room. 

2. For supplying air, the area of the opening shall be of a size at least equal to the 
boiler(s) breeching but not less than one square inch of free area per 1 4,000 Btu per hour 
input (approximately equal to 0.5 square foot per million Btu), except as noted in 
248CMR7.01(2)(e). 

(d) Boilers Directly Connected to Chimney without Neutralizing Air Openings . 

1, The effective cross-sectional area of the permanent outside air opening(s) to the 
boiler room shall be large enough to supply the air required in the boiler room. 

2. For supplying air, the area of the opening shall be of a size at least equal to the 
boiler(s) breeching but not less than one square inch of free area per 17,500 Btu per hour 
input (approximately equal to 0.4 square foot per million Btu), except as noted in 
248CMR7.01(2)(e). 

(e) Exceptions . 

1 . Ducts to a Boiler Room : In determining the cross-sectional area of duct(s) used to 
convey air from the outdoors to the boiler room, the resistance to air flow imposed by the 
duct(s) shall be considered. 

2. Forced Air Supply to Boiler Room : If mechanical means for boiler room air supply 
are used, the size of the duct or opening may be reduced to not less than that needed to 
provide the required quantity of air. 

(3) Accessibility for Cleaning and Inspection . Sufficient and reasonable accessibility shall be 
offered for Inspection, cleaning, repair and replacement of all burners, combustion controls, 
safety devices and boiler components. 

(4) Venting of Flue Gases . 

(a) Chimneys . 

1 . All boilers shall be securely connected to a chimney in good condition and of proper 
construction and ample size to carry away the flue gases and permit satisfactory burner 
operation under all weather and operating conditions. 

2. The chimney shall be designed and built to take care of the maximum volume of flue 
gases which may be produced by the boilers connected to it, as well as any other 
combustion equipment, under the least conditions of draft which can be encountered. 
The design should also provide proper constmction to resist wind forces, weathering, 
interior corrosion and flue gas temperatures. 

3. The chimney shall be pre-inspected and, if necessary, tested to determine whether it 
is in suitable condition to handle the flue gases to be dispersed. Any defects shall be 
corrected. 

4. An existing chimney shall be checked as to cross-sectional area, arrangement, and 
height to determine if it will handle the volume of flue gases produced by the boiler or 
boilers, under the least condition of draft that may be encountered. This shall include 
consideration of pressure and temperature conditions at which the flue gases enter the 
chimney and the effect of flue gases which may be fed into the chimney from other 
combustion equipment. 

(b) Chimney Connectors . 

1 . Connectors from a boiler to its chimney shall be of noncombustible material capable 
of withstanding the corrosion effects and temperatures of the flue gases to be handled. 
They shall have sufficient strength to withstand the physical stresses likely to occur under 
the conditions of use and shall be securely supported. 

2. The connector shall be installed so as to avoid excessive turns or other construction 
features which create unnecessary resistance to flow of flue gases. 

3. The joint between the connector and the chimney shall be sealed to prevent gas 
leakage or air infiltration. 



3/11/05 248 CMR -51 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.03: continued 

4. A connector shall not extend into a chimney beyond the inner wall of the chimney 
flue. 

5. The connector shall be sized as recommended by the boiler or burner manufacturer. 
If the manufacturer's recommendations are not available, the connector shall be the size 
of the boiler flue collar, or if a draft hood is used, shall be the size of the outlet of the 
draft hood unless the connector is designed and installed in accordance with industry 
recognized and approved engineering methods. 

6. On multiple installations, separate connectors should be run to the chimney. When 
this is not practical, each connector shall be y-connected to a common breeching, the 
cross-sectional area of which shall be not less than the combined areas of the individual 
connectors. 

(c) Draft Control . 

1 . Boilers requiring controlled chimney draft shall be provided with equipment capable 
of automatically regulating the draft to that recommended by the boiler manufacturer. 
Such control may be of the barometric type which regulates the draft in the boiler 
breeching or the mechanically operated damper type which controls the pressure in the 
boiler firebox or the draft hood type which is nonadjustable. 

2. A double-acting barometric draft regulator, if used, shall be equipped with a device 
which will automatically shut off the fuel to the burner in the event flue gas spillage 
exceeds 60 seconds. 

3. Mechanically operated dampers shall be designed to maintain a safe damper opening 
at all times and be arranged to prevent firing of the burner unless the damper is in the 
proper position. 

4. Draft Control : 

a. When a draft control device is used, it shall be installed without alteration in 
accordance with the manufacturer's instructions. 

b. In no case shall a barometric draft control device be installed in a false ceiling, 
in a different room or in any place or manner that will permit a difference in pressure 
between a draft relief opening and the combustion air supply. 

c. A draft control device shall be installed in the position for which it was designed 
with reference to the horizontal and vertical planes and shall be located so that a 
relief opening is not obstructed. 

d. When induced or forced draft devices are used, provision shall be made to 
prevent flow of gas to the burners upon failure of these devices. 

5. Adjustable manual dampers should be removed except when a damper must be used 
to control excess chimney draft. Positive means shall then be provided to lock the 
damper in the proper position by welding or riveting. As an alternate, a portion of the 
damper can be removed to prevent full closure. 

6. Full closing outlet isolation dampers shall be interlocked so that the boiler firing 
system cannot be operated unless its isolation damper is in the proper open position. 

7. Adjustable (modulating) dampers, shall be airanged to maintain a safe fuel-air ratio 
over the full operating range. Linkage shall be arranged to resist accidental damage and 
disengagement. Any counter-balancing arms or weights attached to the damper shall be 

^located or shielded as to prevent personal injury or damage to equipment in case of 
breakage. 

8. When a draft hood is used, it shall be installed without alteration in accordance with 
the manufacturer's instructions. In no case shall a draft hood be installed in a false 
ceiling, in a different room, or in a manner that will permit a difference in pressure 
between the draft hood relief opening and the combustion air supply. 

7.04: Installation of Burners and Controls 

(1) Main Burners . 

(a) Each burner assembly and its component parts shall be installed according to the 
manufacturer's instructions and shall be properly and firmly secured in place to maintain 
correct alignment in normal use. 

(b) The burner assembly shall be installed so that sufficient accessibility is afforded for 
cleaning, inspection, repair, and replacement of all burners, controls and safety devices. 



3/11/05 248 CMR -52 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 




(c) Burner assembly parts, when adjustable, shall be provided with suitable locking devices 
to prevent accidental shifting. 

(d) Provision shall be made to permit ready observation of each pilot and main burner flame 
during adjustment and under operating conditions. 

(e) A burner assembly, when adjusted according to the manufacturer's instruction, shall 
maintain satisfactory operating characteristics as specified in 248 CMR 7.05(5) at all firing 
rates called for by input and air-gas ratio controls applied to the installation. 

(2) Control Application . 

(a) Each control shall be supported in such a manner that it and its sensing element will 
remain in proper position. It shall be possible to determine by observation or test thai each 
control is in its proper location and capable of functioning as intended. 

(b) Nothing shall be provided for the puipose of permitting any safety control to be rendered 
ineffective or allowing firing of the burner assembly without the protection of all of the 
specified safety controls except as permitted by 248 CMR 7.04(2)(c). 

(c) A low-water cutoff may be bypassed for blow-down purposes only. Such a bypass shall 
be of a type which must be manually held in the bypass portion and which is self-restoring 
when released. 

(d) A burner assembly not equipped to provide safe automatic restarting shall be arranged 
to require manual restart after any control functions to cause the fuel supply to be shut off 
and the following restoration of an interrupted power supply. 

(e) The safety-control circuit shall be two-wire, one side grounded, having a nominal 
voltage of 150 volts or less. The circuit shall be connected to a branch circuit that can be 
protected against overcurrent at not more than the value appropriate for the rating of the 
electrical components included in the circuit. 

(f) A safety control or protective device switch shall interrupt the ungrounded conductor(s). 

(g) Safety controls shall not depend on electricity to attain the off position. 

(3) Control of Combustion Air . 

(a) An air shutter shall be capable of being readily adjusted to any desired setting and 
securely locked to prevent accidental change in setting. 

(b) The air inlet(s) shall supply an adequate amount of air for combustion under the 
specified draft conditions and at the maximum firing rate of the burner assembly as installed. 
All air required for combustion shall be introduced in a manner so as to provide thorough 
mixing of the gas and air. If a burner is intended for installation with an air or wind box(es), 
it shall be supplied by the burner manufacturer or be built in accordance with the burner 
manufacturer's instructions. 

(c) Linkage for controDing air and gas input rates shall be designed to reliably maintain the 
correct gas-air ratio and to resist accidental damage and disengagement. 

(d) Boilers having forced or induced draft fans or both, shall be provided with means to 
automatically continue safe combustion or to shut off the gas supply upon failure of the 
equipment supplying the air. 

(e) If air under pressure is mixed with the gas supply in a mixer, effective means shall be 
provided to prevent air from passing back into the gas line or gas into the air supply. The gas 
and air supply shall be controlled to prevent gas from entering burners until the air supply 
is available and, in the event of air failure, to shut off the gas supply. 

(4) Primary Safety Control (Flame Safeguard) . 

(a) Each burner assembly shall be provided with a non-recycling primary safety control that 
will de-energize the main gas safety shutoff valve(s) upon loss of flame at point of 
supervision. 

(b) Safety control timings shall not exceed the values given in 248 CMR 7.04: Table 1. 

(c) Gas to pilots shall be automatically shut off if the pilot is not proved, and safety 
shutdown established. 

(d) Pilot supervision by the primary safety control shall be only at the point where the pilot 
flame will effectively ignite the gas at the main burner or burner group with the pilot burning 
at any flame that will actuate the safety control. 



3/11/05 248 CMR -53 



248^CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 



(e) Supervision of the main burner flame only shall begin at the end of the main burner 
flame-establishing period for: 

1. Power burners having a firing rate per combustion chamber of 2,500,000 Btu per 

hour and over. 



TABLE 1 

Maximum Safety Control Timings 

Maximum Firing Rate Per Combustion 
Chamber in Million Btu Per Hour 




2.5 or less 


Over 2.5 to 12.5 


Over 12.5 


Pilot Flame Establishing Period 


15 Seconds 


10 Seconds 


10 Seconds 


Main Burner Flame Establishing Period 
(If Required) 


15 Seconds "* 


10 Seconds 


10 Seconds * 


Flame Failure Response Time 


4 seconds 


4 Seconds 


4 Seconds 


Valve Closing Time 


5 Seconds 


1 Second 


1 Second 



* Main burner flame-establishing period may be 30 seconds for burner other than power burners equipped 
with a safety shutoff valve having a full opening time of not less than 25 seconds. 

2. All types of burners with modulating or high-low firing rate per combustion chamber 
of 2,500,000 Btu per hour and over, 

3. All types of burners with an interrupted pilot(s), and 

4. Atmospheric type burners having a firing rate per combustion chamber of 5 ,000,000 
Btu per hour and over. 

If the main burner flame is not proved, safety shutdown shall be established. 

(f) A burner assembly shall be equipped so that no gas can flow to the main burner on 
burner group operating as a unit unless the pilot is proved. 

(g) If two or more burner assemblies are installed in a single boiler, the primary safety 
control of each bumer assembly shall operate independently of the other, or equivalent safety 
features shall be provided so that in no case can any one bumer operate unsafely. 

(5) Limit Controls . 

(a) Limit Control : 

1. A limit control shall be provided to prevent excessive steam pressure in a steam 
boiler or excessive pressure or temperature in a hot water boiler. 

2. Each steam and hot water boiler shall be equipped with a control which willprevent 
firing of the boiler in the event of insufficient water in the boiler. 

3. The limit control shall be in addition to operating controls. Manual restart shall be 
required after a pressure or temperature limit control functions. 

(b) A limit control which functions by opening a switch shall directly open the electrical 
circuit to the safety shutoff valve(s). 

(6) Combustion (Input") Control Systems . 

(a) The combustion (input) control system shall maintain predetermined air-fuel mixtures 
within the limits required by the bumer for stable combustion throughout the entire operating 
range of the bumer and during changes in the firing rate. 

(b) To accomplish changes in the firing rate, the fuel and air supplies shall be maintained 
at a pre-determined optimum air-fuel ratio, either manually or automatically. 

(c) Burners having a firing rate per combustion chamber of 1 ,000,000 Btu per hour and over 
shall be equipped with a proven low-fire start. 

(d) Burners having a firing rate per combustion chamber of 2,500,000 Bm per hour and over 
shall be provided with combustion control. 



3/11/05 



248 CMR - 54 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




7.04; continued 




(7) Pilots . 

(a) Main burners shall be equipped with a supervised pilot adequate to provide safe main 
burner ignition under all conditions of operation. Multiple burner heads operated as a single 
burner unit shall use a sufficient number of supervised pilots to accomplish safe ignition. 

(b) A pilot burner not automatically lighted shall be located so that it can be safely lighted 
manually. 

(c) Gas supply pressure to the pilot or group of pilots: 

1 . The gas supply pressure to the pilot or group of pilots shall be regulated. 

2. The regulator(s) shall be listed; and vented in accordance with the 248 CMR 
7.04(Il)(c), unless constructed or equipped to limit the escape of gas from the vent 
opening in the event of diaphragm failure to not more that 2.5 cubic feet per hour. 

3. The pilot supply line shall be connected upstream of all main burner valves and the 
main gas pressure regulator. 

(d) Primary air openings and orifices shall be easily accessible for servicing. 

(e) An electric ignition system shall ignite only a pilot. 

(f) If means for ignition is cut off at the termination of either the main burner flame- 
establishing period, the ignition shall remain off for the duration of that fixing cycle and for 
the specified purge period. 

(g) A pilot burner, electric igniter, and pilot flame sensing device shall be supported in such 
a manner that their position relative to each other and to the main burner port(s) will remain 
fixed. 

(8) Gas Valve Pressure Ratings . 

(a) Gas valves shall be capable of withstanding without damage a pressure of not less than 
10% above the relieving pressure of the nearest upstream relief device. 

(b) In case no relief device is provided, the gas valves shall be capable of withstanding 
without damage a pressure of not less than the maximum inlet pressure of tlie nearest 
upstream gas pressure regulator or the maximum setting of the over-pressure protection 
device. 

(9) Manually Operated Gas Shutoff Valves . {See 248 CMR 7.04 Figures 1 and 2.) 

(a) A manually operated main burner shutoff valve shall be installed in the line supplying 
all main burners of each boiler and upstream of all other main burner control valves. 

(b) A manually operated main pilot shutoff valve shall be located in the gas supply line to 
the pilot burner. 

(c) Manually operated main shutoff and pilot shutoff valves in sizes larger than two inches 
or for pressures greater than Vz psig shall be of the lubricated plug or ball type with stops. 
Manually operated valves shall have the handle securely attached parallel to the gas flow in 
the open position, shall be readily accessible, and shall clearly indicate the "on" and "off" 
positions. 

(d) A manually operated main burner test valve (checking gas cock) shall be provided 
downstream from the safety shutoff valve for each main burner. On manually lighted 
burners, the valves shall be interlocked with the safety conu-ol circuit and arranged so that 
the main burner safety shutoff valves must be opened against their associated closed test 
valves. 

(e) In multiple burner installations a manual valve shall be provided for each main and each 
pilot burner except those utilizing a single zero governor inspirator mixer for several burners 
in which case this valve shall be located at a point immediately upstream of the zero 
governor. 

(f) Provisions shall be made so that the gas supply to the boiler(s) may be shut off from a 
location outside the boiler room. 



3/11/05 248 CMR -55 



248 CMR: BOAJRD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 



FIGURE 1. 
Elustration of Manual Valving Arrangement for a Single Burner Single Boiler Installation 



MANUAL MAIN PILOT 

SHUTOFF VALVE 
248 CMR 7.04: (9)(h) 



MAIN GAS SUPPLY 



-Z 



/SINGLE BOILER 
\SINGLE BURNER 




MANUAL MAIN BURNER TEST VALVE 
248 CMR 7.04:C9X'l) 



MANUAL:MAINBURNER::SHUTQFF.yALVE 

248-(:MRi:7^p4:/(;9xa). % ' .' 



ADDITIONAL BOILERS 






."■-> 



MANUAL SHUTOFF VALVE 
248 CMR 7.04: (9X0 



3/11/05 



248 CMR - 56 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 

FIGURE 2. 
Illustration of Manual Valving Arrangement for a Multiple Burner, Single Boiler Arrangement 



MANUAL PILOT VALVE(S) 
248 CMR 7.04: (9Xe) 



MANUAL MAIN PILOT 

SHUTOFF VALVE 
248 CMR 7.04: (9Xb) 



SINGLE BOILER 
MULTIPLE BURNER(S) 



MAIN SHUTOFF VALVE 
248 CMR7.04I (5X^ 





MANUAL MAIN BURNER TEST VALVE 
248 CMR 7.04: (9Xd)ajid 
248 CMR 7.04: (9Xe) 



MANUAL MAIN BURNER SHUTOFF VALVE 
248 CMR 7.04: (?Xa> 



— ^ 




3/11/05 



248 CMR - 57 



248 CUR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 



(10) Control and Safety Shutoff Valves . (5eg 248 CMR 7.04 Figure 3.) 

(a) An automatic boiler input control valve may be in combination with a safety shutoff 
valve. 

(b) A bypass to provide for minimum flame may be installed around a valve to control 
boiler input only. A bypass shall not be installed around a safety shutoff valve or a 
combustion input control and safety shutoff valve. 

(c) Safety Valves ; 

1. Each main burner supply line and each pilot supply line shall be equipped with a 
safety shutoff valve(s) which will close independent of external force. 

2. The safety shutoff valve(s) shall close with sufficient force to provide tight shutoff 
under normal operating conditions and when closed by the safety control system or by 
an emergency device. 

3. If the maximum firing rate per combustion chamber exceeds 1,000,000 BTU/hour, 
the main burner supply line shall be equipped as indicated in 248 CMR 7.04(10)(c)3.a. 
and b.: 

a. Two safety shutoff valves, in series, or one safety shutoff valve of the type 
incorporating a valve seal overtravel interlock, when the maximum firing rate per 
combustion chamber exceeds 1,000,000 BTU/hour but less than 5,000,000 
BTU/hour. 

b. Two safety shutoff valves, in series, one of which is of the type incorporating a 
valve seal overtravel interlock when the maximum firing rate per combustion 
chamber exceeds 5,000,000 BTU/hour. 

The Board may prescribe two safety shutoff valves in series, for combustion 
chambers with inputs less than 1 ,000,000 BTU/hour, in buildings of public assembly. 

(d) Safety shutoff valves shall be suitable for the application and shall have a shutoff time 
not to exceed that specified in 248 CMR 7.04 Table 1 . They shall be constructed so that they 
cannot be restrained or blocked in the open position. Such valves shall close upon being de- 
energized regardless of the positions of damper-operating levers or reset handles. 

(e) An electrically operated safety shutoff valve shall not depend on electricity to shut off 
the gas supply. 

(f) A pressure-operated safety shutoff valve shall close upon failure of its operating 
pressure. 

(g) Permanent and ready means for making easy, accurate, periodic tightness tests of the 
main burner gas safety shutoff valves shall be provided in the piping. 



3/11/05 248 CMR -58 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 

FIGURE 3A. 
niustration of Gas Train 248 CMR 3.00 through 7.00 requirements 400,000 to Less Than 1,000,000 
BTU/hour Input 




To /Vfain Burner- 



\J Burner Pressure 
Test Port 




Safety ShutofF 
Valve 



3/11/05 



248 CMR - 59 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.04: continued 



. FIGURE 3B. 
Illustration of Gas Train 248 CMR 3.00 through 7.00 1,000,000 to Less Than 2,500,000 BTU/hour Input 



Safety Shutoff Valve. , 

v/ith Valve Seal- 
Oveftravellaterloclc". 






^ -iW^^' 


-"■ 






^^Pil^Llhe-: 








V\.= ShutoffValYe;Withio Six Feet : • , 
; ;;brEhtrafuie:toGa&1irain ■ V , 

B =.uriion :•■;;.:::;:•:>''-••;.;■;•.■ ■;• 

C = start of Gas train 

D = lilotVeiitti OijfaiiUUrdwj E([i£qpjei\\ifli 
liinijirifSeuteaf 2 J cufLflir 

E = Vent to Outside Per Table 2 

F = Combination High and Low Pressure 
Switch Allowed at Low Pressure 
Switch Locationi^^!i:";". 



3/11/05 



248 CMR - 60 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




7.04: continued 

FIGURE 3C. 
Illustration of Gas Train 248 CMR 3.00 through 7.00 requirements for 2,500,000 to less than 5,000,000 
BTU/hour Input 



Pilot 
Line 




a 



Pressure 
Regulator 



Safety; ShutofF 
Valve 



A = 

8 = 
C = 
D = 



E 
F 



Shutoff Valve Within Six Feet 

of Entrance to Gas Train - 

Union 

Start of Gas Train 

Pilot Vent to Outside Unless 

Equipped with Limiting Device 

of 2.5 cu. ft./hr 

Vent to Outside per Table 2 

Combination High and Low 

Pressure Switch Allowed at 

Low Pressure Switch Location 



3/11/05 



248 CMR -61 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7D4: continued 



FIGURE 3D. 
Illustration of Gas Train 248 CMR 3.00 through 7.00 5,000,000 to 12,500,000 BTU/hour Input. 



Manual Shuioff Valve 



Low Pressure 
Swiuh 




Safety ShutafT Valve 
v/i(li V^lve Seal 
Overtravel Interlock 



C=0=3 



High Pressure 
Switch 



Manual Shutoff Valve 




Burner Pressure 
Test Port 



Pilot Supply 



Manual ShutofT Valve 



A = 


Shutoff Valve Within Six Feet of 




Entrance to Gas Train 


B = 


Union 


C = 


Start of Gas Train 


D = 


Pilot Vent to Outside Unless 




Equipped with Limiting Device of 




2.5 cu. ft./hr 


E = 


Vent to Outside per Table 2 


F = 


Combination High and Low 




Pressure Switch Allowed at Low 




Pressure Switch Location 


G = 


MaybePartofSSOV 



(11) Main Gas Pressure Regulators and Gas Pressure Interlocks . 

(a) Each burner assembly shall be equipped with a listed main gas pressure regulator that 
will regulate within plus or minus 10% of the operating pressure at all firing rates. {See 
248 CMR 7.04 Figure 3 for location). 

(b) Spring or weight-loaded regulators shall have springs covered by a suitable housing. 
Under no circumstances shall a weight and lever type of regulator be used. 

(c) Main Gas Pressure Regulators : 

1 . Except where zero governors are used in connection with air-gas mixers, all main gas 
pressure regulators shall be independently vented to a safe outdoor location. 

2. Vent lines from main gas pressure regulators shall not be connected into a common 
line with the bleed line from gas operated diaphragm valves or from pressure relief 
valves. 

3. Vent lines shall be steel, wrought iron pipe or corrugated stainless steel tubing 
(CSST) with Product-approved devices provided at termination points to prevent 
stoppage of the lines by foreign material, water or insects and, shall extend no less than 
18-24 inches above the roof surface. 

4. Vent lines shall be sized as specified in 248 CMR 7.04 Table 2 . 

5. Vent lines shall be supported in accordance with 248 CMR 1 .00 through 10.00. 



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248 CMR - 62 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




7.04: continued 




6. Vent lines shall be run to the outside using the shortest practical route and shall not 
be trapped or installed in a manner that restricts air-flow. 

7. Vent lines that penetrate roofs and sidewalls shall be run through metallic sleeves that 
are sealed from the weather and insects. 

8. CSST vent lines that penetrate roofs shall transition to steel pipe no less than one foot 
inside the building. 

9. Vent lines that terminate a building shall be located no Jess than four-feet away from 
any building opening or air intake. Outside vent termination shall consist of steel pipe 
and malleable fittings. 

(d) Pressure Switches . 

1. If the maximum firing rate per combustion chamber exceeds 1,000,000 BTU/hour, 
gas pressure supervision shall be provided by listed pressure switches, or listed 
combination high-low switch, interlocked to accomplish anon-recycling safety shutdown 
in the event of either high or low gas pressure. 

2. Pressure setting shall be adjusted by the installer in accordance with the burner or 
boiler manufacturer's instruction. 

3. Pressure switches that require venting to the outside atmosphere shall be vented in 
accordance with 248 CMR 7.04(1 l)(c). Pressure switches only may be manifolded. 

(e) Accessible 14 inch IPS plugged pressure tappings or connections shall be provided; one 
located upstream of the main gas pressure regulator and another located near the burner head 
to permit accurate measurement of gas pressure. {See 248 CMR 7.04 Figure 3.) 

TABLE 2 

Minimum Pipe Size/CSST for Venting 

Gas Train Components in 248 CMR 7.04 Figures 3a, 3b, 3c, and 3d. 



Gas Train Components 


Maximum lengths of iron pipe or corrugated stainless steel 
tubing (CSST) from components to outside the building 


- 40 feet 


0- 100 feet 


- 200 Feet 


Main Gas Pressure Regulator 

- Steel Pipe Size 

- CSST Size (Low Pressure Gas only) 


% inch IPS 
30/31 EHD 


1 inch IPS 
37 EHD 


P/4 inch IPS 
46/48 EHD 


High & Low Gas Pressure Switches When 
Manifolded 

- Steel Pipe Size 

- CSST Size (Low Pressure Gas only 


% inch IPS 
30/31 EHD 


1 inch IPS 
37 EHD 


11/2 inch IPS 
60/62 EHD 


Block and Bleed Valves (when used) 

- Steel Pipe Size 

- CSST Size (Low Pressure Gas only 


Full IPS Relief 


Increase PS/CSST 
one Size 


Increase IPS/CSST 
two Sizes 



(12) Electrical Equipment . Electrical installations shall conform to the Massachusetts Electrical 
Code - 1993. 



(13) Operating Sequencing , (i'ee also 248 CMR 7.05, Initial Start-Up and Final Adjustments). 

Each installation shall be equipped to provide for sequencing in accordance with the following 

and in the order listed. 

(a) Natural and mechanical draft systems with continuously burning pilot(s) capable of 
igniting any gas flowing from the main burner shall, upon demand for heat: 

1. Prove all interlocks. 

2. Prove combustion air flow for mechanical draft systems. 

3. Prove in light-off position, if either an automatically operated damper, or an 
automatically operated air shutter, or both, are employed. 

4. Prove combustion (input) control, if employed, in light-off position. 

5. Prove pilot(s). 

6. Admit fuel to main burner. 

7. Prove main flame, if required, in accordance with 248 CMR 7,04(4)(e). 

8. Release combustion (input) control. 



3/11/05 



248 CMR - 63 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FirTERS 



7.04: continued 

9. Upon flanie failure at point of supervision, shut off fuel by primary safety control. 

10. Shut off fuel to main burner on release from demand. 

(b) Natural draft systems with intermittent pilot or interrupted pilot shall, upon demand for 
heat: 

1. Prove all interlocks. 

2. Prove open for at least 90 seconds if either an automatically operated damper, an 
automatically operated air shutter, or both, are employed. 

3. Prove in the light-off position if either an automatically operated damper, and 
automatically operated air shutter, or both are employed. 

4. Prove combustion (input) control, if employed, in light-off position. 

5. Prove pilot(s). 

6. Admit fuel to main burner. 

7. Prove main flame, if required, in accordance with 248 CMR 7.04(4)(e). 

8. Release combustion (input) control. 

9. Upon flame failure at point of supervision, shut off fuel by primary safety control. 

10. Shut off fuel on release from demand. 

11. If an automatically operated damper is employed, return to stand-by position. 

(c) Mechanical draft systems with intermittent pilot or interrupted pilot shall, on demand: 

1. Prove all interlocks. 

2. If an automatically operated damper is employed, prove in open position. 

3. Stait fan(s) and prove air flow. Provide at least a four-air change purge of the 
. combustion chamber and boiler passes. The four air changes must be accomplished in 

not more than 90 seconds with burners having maximum firing rate per combustion 
chamber of not more than 2,500,000 Btu per hour. With burner having maximum firing 
rates per combustion chamber in excess of 2,500,000 Btu per hour, the four air changes 
shall be accomplished without time limitation by an air flow rate not less than 60% of the 
air flow provided for the maximum firing rate. 

4. Prove combustion (input) control and automatically operated damper, if employed, 
in light-off position. 

5. Prove pilot(s). 

6. Admit fuel to main burner. 

7. Prove main flame, if required, in accordance with 248 CMR 7.04(4)(e). 

8. Release combustion (input) control. 

9. Upon flame failure at point of supervision, shut off fuel by primary safety control. 

10. Shut off fuel on release from demand. 

11. If an automatically operated damper is employed, return to stand-by position. 

7.05: Initial Start-up and Final Adjustments 

(1) Authorized Representative . An authorized representative of the boiler or burner 
manufacturer shall perform the initial start-up, final adjusting and testing of the burner and 
controls in the presence of the gas inspector and gas company representative. 

(2) Purging Boiler . The furnace, passes, and connected flue piping shall be thoroughlypurged 
before lighting of pilots or burners. This shall be done by creating air flow through the setting 
by fully opening flue dampers and air shutters and by operation of induced and forced draft fans, 
if present. 

(3) Control Operating Tests . 

(a) All controls shall be thoroughly checked for proper operation and sequencing before the 
burner is put into operation. Manufacturer's instructions shall be followed. 

(b) All safety shutoff gas valves shall be tested for gas tightness while in the closed position 
before being placed in service. During this test, gas shall be shut off to all burners 
downstream from the safety shutoff gas valve. 



3/11/05 248 CMR -64 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



7.05; continued 




(4) Pilot Operation Tests . 

(a) After the gas piping has been thoroughly cleared of air and any foreign materials, the 
pilot burner shall be lighted and adjusted with the main burner manual and automatic valves 
in the closed position. Adjustment to the pilot shall be made in accordance with 
manufacturer's instructions. 

(b) Pilots shall not deposit carbon when adjusted according to the manufacturer's 
instmctions. 

(c) When escapement or bleed pilots are used, the discharge shall be in a fixed position and 
shall be freely ignited by the continuous burning pilot or vented to a safe location. 

(5) Burner Operation Tests . 

(a) The main burner shall be put into operation and tested only after 248 CMR 7.05(2), (3), 
and (4) have been completed. Manufacturer's instructions shall be followed for light-off and 
adjustment of the main burner. 

(b) Pilots shall reliably effect immediate ignition of the main burner even when the gas 
supply to the pilot(s) is reduced to a point where the pilot flame is just sufficient to actuate 
or energize the flame detection device. Follow the manufacturer's instructions in conducting 
this test. 

(c) Continuously burning pilot flames shall not, become extinguished: when the main 
burners are turned on or off in a normal manner, either manually or by automatic controls, 
when the air flow through the burner is rapidly changed from maximum to minimum or vice 
versa after the main burners are shut off following operation of boiler at its maximum 
capacity, nor during any normal operating conditions that will occur. The above tests shall 
be repeated three times. 

(d) The pilot burner shall reliably ignite the main burner under any normal condition of 
operation. 

(e) The arrangement of burners, valves, and pilots shall be such that when only the pilots 
supervised by the flame safeguard equipment are in operation, any burner or combination of 
burners shall be effectively ignited without delayed ignition or flash back. 

(f) Burner flames shall not flash back when fired at any rate within the installed operating 
ra,nge of the burner. 

(g) Burner flames shall not flash outside the boiler when the gas is turned on or off by the 
automatic control mechanism. 

(h) Proper air-gas ratio shall be maintained and combustion shall be complete over the full 
installed operating range of the burner. 

(6) Test for Venting . A check shall be made for proper venting with the burner operating at 
maximum installed input and with all building exhaust fans operating which are in 
communication with the boiler room and with all outside closeable boiler room openings shut. 

(7) Instructions to the Operator . 

(a) Complete written or printed instructions including wiring diagrams shall be supplied and 
made conveniently available or posted in a permanent form in a prominent place near the 
boiler. These instiuctions shall include complete start up as well as normal and emergency 
shutdown procedures. Start up shall be from the methods provided by the control system for 
that purpose. 

(b) To guard against malfunctioning all controls should periodically be tested on a 
scheduled basis. 

(c) Extended Shutdown. When a boiler is shut down for an extended period it is 
reconmiended that in addition to closing all gas valves, as a further precaution, gas be 
prevented from leaking into the boiler by blocking off or disconnecting and capping or 
plugging the gas supply pipe. 



REGULATORY AUTHORITY 

248 CMR 7.00: M.G.L. c. 112, § 61; M.G.L. c. 142, §§ 13 and 21. 

3/1 1/05 248 CMR - 65 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



3/11/05 . 248 CMR -66 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(248 CMR 8.00 AND 9.00: RESERVED) 



3/11/05 248 CMR -67 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(PAGES 69 THROUGH 80 ARE RESERVED FOR FUTURE USE.) 




3/11/05 248 CMR -68 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 10.00: UNIFORM STATE PLUMBING CODE 

Section 

10:01: Scope and Jurisdiction 

10.02: Basic Principles 

10.03: Definitions 

10.04: Testing and Safety 

10.05: General Regulations 

10.06: Materials 

10.07: Joints and Connections 

10.08: Traps and Cleanouts 

10.09: Interceptors, Separators, and Holding Tanks 

10.10: Plumbing Fixtures 

10.11: Hangers and Supports 

10.12: Indirect Waste Piping 

10.13; Piping and Treatment of Special Hazardous Wastes 

10.14: Water Supply and the Water Distribution System 

10.15: Sanitary Drainage System 

10.16: Vents and Venting 

10.17: Storm Drains 

10.18: Hospital Fixtures 

10.19: Plumbing in Manufactured Homes and Construction Trailers 

10.20: Public and Semi-public Swimming Pools 

10.21: Boiler Blow-off Tank 

10.22: Figures 

10.23: Vacuum Drainage System 



10.01: Scope and Jurisdiction 



(1) Scope . 248 CMR 10.00 governs the requirements for the installation, alteration, removal, 
replacement, repair or construction of all plumbing. 

(2) Jurisdiction . 

(a) Nothing in 248 CMR 10.00 shall" be construed as applying to: 

1. refrigeration 

2. heating, 

3. cooling, 

4. ventilation or fire sprinkler systems beyond the point where a direct connection is 
made with the potable water distribution system. 

(b) Sanitary drains, storm water drains, hazardous waste drainage systems, dedicated 
systems, potable and non-potable water supply lines and other connections shall be subject 
to 248 CMR 10.00. 



10.02: Basic Principles 



Founding of Principles . 248 CMR 10.00 is founded upon certain principles of public health 
environmental sanitation and safety through properly designed, acceptably installed, and 
adequately maintained plumbing systems. Some of the details of plumbing construction may 
vary but the basic sanitary and safety principles .desirable and necessary to protect the health of 
people are the same everywhere. As interpretations may be required, and as unforeseen 
situations arise which are not specifically covered in 248 CMR 10.00, the fmal interpretation 
shall be made by the Board. The following principles shall comply with all Articles of the State 
Sanitary Code and Titles of the Environmental Code. 

(1) Principle No. 1 - All Occupied Premises Must Have Potable Water . All premises intended 
for human habitation, occupancy, or use must be provided with a supply of potable water. Such 
a water supply shall not be connected with unsafe or questionable water sources, nor shall it be 
subject to the hazards of backflow, backpressure, or back-siphonage. 



3/11/05 248 CMR -81 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.02: continued 



(2) Principle No. 2 - Adequate Water Required . Plumbing fixtures, devices, and appurtenances 
must be supplied with water in sufficient volume and at pressures adequate to enable them to 
function properly and without undue noise under normal conditions of use. 

(3) Principle No. 3 - Hot Water Required . Hot water must be supplied to all plumbing fixtures 
which normally need or require hot water for their proper use and function. 

(4) Principle No. 4 -- Water Conservation . Plumbing must be designed and adjusted to use the 
minimum quantity of water consistent with proper performance and cleaning. 

(5) Principle No. 5 —Dangers of Explosion or Overheating . Devices and appliances for heating 
and storing water must be so designed and installed as to guard against dangers from explosion 
or overheating. 

(6) Principle No. 6 — Required Plumbing Fixtures . 

(a) To meet the basic prerequisites of sanitation and personal hygiene each dwelling shall 
include the following: 

1. At least one toilet. 

2. At least one lavatory. 

3. At least one kitchen style sink. 

4. At least one bathtub or shower compartment or shower unit. 

5. Laundry Facility Requirements . A washing machine connection that consists of a 
piping arrangement that includes a cold water supply, hot water supply and a sufficient 
drain connection shall be provided in conformance with the following: 

a. One and Two Family Dwelling . At least one washing machine connection per 
unit. 

b. Multiple Dwellings . 

i. Non-elderly Housing . In multiple dwellings that are not restricted to the 

elderly, at least one washing machine connection for every ten dwelling units or 

fraction thereof that do not have a washing machine in the unit. 

ii. Elderly Housing . In housing that is restricted to the elderly, at least one 

washing machine connection for every 20 dwelling units or faction thereof that 

do not have a washing machine in the unit. 

iii. The washing machine cormection shall be located so that each occupant in 

a dwelling has access to a washing machine that may be affixed to the washing 

machine connection. 

(b) All buildings and structures other than residential dwellings that are intended for 
occupancy shall be equipped with sufficient sanitary facilities as outlined in 248 CMR 10.00. 

(c) Plumbing fixtures must be constructed of durable, smooth, nonabsorbent and corrosion 
resistant material and must be free of concealed fouling surfaces. 

(7) Principle No. 7 — Drainage System of Adequate Size . The plumbing drainage system must 
be installed, designed, arranged, constructed, and maintained to protect against fouling, deposit 
of solids, and stoppages. The drainage system shall incoiporate adequate cleanouts placed in a 
manner that the drainage system may be readily cleaned. 

(8) Principle No. 8 - Durable Materials and Good Workmanship . The piping and other 
components of the plumbing system must be manufactured of durable material, free from 
defective workmanship, and designed and constructed to provide satisfactory service for its 
reasonable expected life. 

(9) Principle No. 9 -- Liquid Sealed Traps Required . Every fixture directly connected to the 
drainage system must be equipped with a liquid-seal trap. 

(10) Principle No. 10 - Protection of Trap Seals . The drainage and vent system must be 
designed to provide adequate circulation of air in and throughout all piping. Trap seals shall be 
protected from the dangers of, siphonage, leakage, aspiration, momentum, oscillation, back 
pressure, evaporation and capillary action under conditions of normal ordinary use. 



3/11/05 .. 248 CMR -82 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.02: continued 




(11) Principle No. 1 1 -- Exhaust Sewage Gases to Outside . Vent temiinals shall extend to the 
outer air above the roof line and be installed to prohibit the possibility of vent obstruction and 
the return of sewage gases into the building. 

(12) Principle No. 12 •- Test the Plumbing System . The plumbing system must be subjected 
to such tests as will effectively disclose all leaks and defects in the work or the materials. 

(13) Principle No. 13 — Exclude Harmful Substances from the Plumbing System . No substance 
that will cause or exacerbate clogs or stoppages in pipes, produce explosive naixtures, destroy 
the pipes or their joints, or interfere unduly with the sewage disposal process shall enter the 
building drainage system. 

(14) Principle No. 14 -- Prevent Contamination by Installing Indirect Waste . Indirect drainage 
piping installations shall be provided to prevent contamination of food, water, ice, sterile goods, 
and other similar products. When the potential of a backflow of sewage event is possible the 
fixture, device, or appliance shall be connected indirectly wich the building sanitary or storm 
drainage system. 

(15) Principle No. 1 5 -- Light and Ventilation . No toilets, urinals, bathtubs, or shower facilities 
shall be installed into a new or renovated room, space, or compartment that does not incorporate 
proper illumination and mechanical exhaust to the exterior of the building. This Principle does 
not apply to the removal and replacement of existing fixtures. 

(16) Principle No. 16 -- Individual Sewage Disposal Systems . If toilets or other plumbing 
fixtures ai-e to be installed in buildings where there is no sewer within a reasonable distance, 
suitable provision shall be made for disposing of the sewage in compliance with 248 CMR and 
3 10 CMR 15.00. 

( 1 7) Principal No. 17 — Prevent Sewer Flooding . Where a plumbing drainage system is subject 
to back-flow of sewage from the public sewer system suitable provision shall be incorporated 
to prevent the potential of overflow into the building. 

(18) Principle No. 18 — Proper Maintenance . Plumbing systems shall be maintained in a safe 
and serviceable condition from the standpoint of both mechanics and health. 

(19) Principle No. 19 -- Fixtures Shall Be Accessible . AH plumbing fixtures shall be installed 
in a manner with respect to clearances for spacing and accessibility for their intended use and 
cleansing. 

(20) Principle No. 20 -- Structural Safety . Plumbing shall be installed with regard to the 
preservation of the strength of structural members and the prevention of damage to walls, floors 
and other strucmrally sensitive surfaces when performing fixture installations and through fixture 
usage. 

(21) Principle No. 2 1 - Protect Ground and Surface Water . All discharges to ground or surface 
water must meet all local, state, and federal water quality discharge standards. 

(22) Principle No. 22 - Piping and Treatment of Hazardous Wastes . AH waste dischai^ge 
materials that may become detrimental to the health and welfare of the general public, that enter 
the sanitary drainage system of any building, shall be carried within hazardous waste piping 
systems. The hazardous waste shall be collected and disposed of or treated prior to entering the 
sanitary drainage system in accordance with the requirements of 248 CMR. 10.00. 

(23) Principle No. 23 - Privacy for Toilets . In a room that accommodates more than one toilet 
or that incorporates a urinal and a toilet, each toilet shall be enclosed and each urinal shall be side 
shielded for privacy. 



3/11/05 248 CMR -83 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.02: continued 



(24) Principle No. 24 --Drinking Fountain . Drinking fountains shall be installed in safe, clean 
and hazard free areas. The installation of a drinking fountain in a rest room that incorporates 
toilets or urinals is prohibited. 

(25) Principle No. 25 -- Temporary Construction Trailers . Temporary construction trailers are 
exempt from the material, provisions of 248 CMR. 10.06 the water and sewer connections shall 
be the same materials as supplied by the trailer manufacturer. 

(26) Principle No. 26 --Materials and Design : The materials, products, devices, methods, 
systems, design, and installation of any and all aspects of a plumbing systems shall be in 
confonnance with 248 CMR 3.00 thi-ough 10.00, including that all products used in any 
plumbing or gas fitting systems shall be Product-Approved by the Board. 



10.03: Definitions 



For the purpose of 248 CMR 10.00, the terms defined in 248 CMR 3.00 have the meanings 
as defined therein. In addition, for the purposes of 248 CMR 10.00, the following terms shall 
have the meanings. No attempt is made to define ordinary words which are used in accordance 
with their established dictionary meaning except where it is necessary to define their meaning 
as used in 248 CMR 10.00 to avoid nnisunderstanding. 

Accessible. Having access thereto that may require the removal of an access panel, door, or 
similar obstruction. 

Air Break (Drainage System) . A piping arrangement wherein a drain from a fixture, appliance, 
or device discharges indirectly into a fixture, receptacle, or interceptor at a point below the flood 
level rim of the receptacle. 

Air Gap (Drainage System) . The unobstructed vertical distance through the free atmosphere 
between the outlet of a waste pipe and the flood level rim of the receptacle into which the waste 
discharges. 

Air Gap (Water Distribution SystemV The unobstructed verfical distance through the free 
atmosphere between the lowest opening from any pipe or faucet supplying water to a tank, 
plumbing fixture, or other device and the flood level rim of the related receptacle. 

Alkalinity . The measure of its capacity to neutralize acids. The quality or state of being alkaline. 
Containing more alkali than normal. Having a pH factor of more than seven. The opposite of 
acidity. 

Anti-siphon Vacuum Breaker — Non-pressure Type (Back-siphonage Preventer) . A device or 
means to prevent back-siphonage. Not to be used under continuous pressure.. 

Anti-siphon Vacuum Breaker — Pressure Type (Back-siphonage Preventer) . A device or means 
to prevent back-siphonage. Designed to be used under continuous pressure. 

Anti-siphon Valve . A diaphragm type spring loaded device that prevents unwanted siphoning 
or over pumping of a chemical into a potable supply of water. Such device is constructed so as 
to sit tight on increasing vacuum, and its positive pressure opening point shall is not less than 
fiveP.S.LG. 

Area Drain . A receptacle designed to collect surface or storm water from an open area. 

Backflow . The flow of water or other liquids, mixtures, or substances into the distributing pipes 
of a potable supply of water from any source or sources other than its intended source. 
Back-siphonage and back pressure are examples of backflows. 

Backflow Connection . Any arrangement whereby backflow can occur. 



3/11/05 248 CMR -84 





248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 

Backflow Preventor . A device or means to prevent backflow. 

Backflow Preventor CReduced Pressure Zone Type) . An assembly of differential valves and 
check valves including an automatically opened spillage port to the atmosphere. 

Back-pressure . Pressure created by mechanical means or other means, causing water, liquids or 
other substances to flow, or move, in a reverse or opposite direction than intended. 

Back-pressure Valve . A spring loaded one way check valve to prevent over pumping or 
unwanted siphoning of a chemical into a potable supply of water. 

Back-siphonage . The flowing back of used, contaminated, or polluted water from a plumbing 
fixture, vessel or other sources into a water supply pipe due to a negative pressure in such pipe. 

Barometric Loop . A vertical loop of pipe, rising to a height sufficient to prevent back-siphonage 
from occurring in the potable water supply pipe. (Approximately 35 feet, depending on the 
weight of the atmosphere.) 

Bathroom (Residential) . A room equipped with a bathtub or shower stall, toilet and a lavatory 
basin or any combination thereof. 

Bathroom (Half-bath) . A room equipped with a toilet and a lavatory basin. 

Battery of Fixtures . Any group of two or more similar fixtures, that are adjacent, which 
discharge into a common horizontal waste or soil branch. 

Battery Waste & Vent System . See Combination Waste & Vent System. 

Black-water. Waste water containing fecal matter and other human waste that is flushed or 
discharged from toilets or urinals. 

Boiler Blow-off . An outlet on a boiler to permit emptying or discharge of sediment. 

Boiler Blow-off Tank . A vessel designed to receive the discharge from a boiler blow-off outlet, 
to cool the discharge to a temperature of 150°F or less, and permits the discharge to flow safely 
to the drainage system. 

Branch . Any part of a piping system other than a main, riser, or stack. 

Branch Interval . A distance along a soil or waste stack coixesponding in general to a story 
height, but not less than eight feet in vertical height, and wherein the horizontal branches from 
one floor or story of a building are connected to the stack. 

Branch Vent . A vent connecting one or more individual vents with a vent stack or stack vent. 

Building . A structure used for the housing, shelter, enclosure, or support of persons, animals or 
property. ' 

Building Drain . The lowest horizontal piping of a drainage system that extends from the base 
of the main stack to a terminating point ten feet outside the inner surface of a building's 
foundation wall, and is of sufficient size to receive the discharge from branch drains and/or 
stacks. 

Building Drain -- Sanitary . A building drain which conveys the discharge of plumbing fixtures. 

Building Drain — Storm . A building drain which conveys storm water waste or other clear water 
drainage. r . 



3/1 1/05 248 CMR - 85 



248 CMR: BOARX) OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 



Building Sewer . The pipe that begins ten feet outside the inner face of a building's foundation 
wall and extends to a public sewer, septic tank, or other place of sewage disposal. 

Building Sewer -- Combined . A building sewer that conveys both sewage and storm water or 
other drainage. 

Building Sewer - Sanitary . A building sewer that conveys the discharge of plumbing fixtures. 

Building Sewer - Storm . A building sewer that conveys storm water waste or other clear- water 
drainage except that it does not convey sewage. 

Building Subdrain . The portion of a drainage system that cannot drain its discharge into a 
building sewer via the force of gravity. 

Building Subdrain - Sanitary . The portion of a drainage system that cannot drain its sewage 
discharge into a building sewer via the force of gravity. 

Building Subdrain - Storm. The portion of a drainage system that cannot drain -its storm water 
waste, clear water discharge or other subsurface clear water discharge excluding sewage, into a 
building storm sewer via the force of gravity. 

Circuit Vent . A branch vent that serves two or more floor-outlet fixtures that are battery wasted. 
Said vent extends from the top of the horizontal soil and/or waste branch in front of the last 
fixture waste and cormects to a vent stack adjacent to the upstream end of the horizontal branch. 

Combination Fixture . A fixture that combines multiple compartments into one unit. 

Combination Waste and Vent System . A specially designed system of waste piping embodying 
the horizontal wet venting of one or more plumbing fixtures or floor drains by means of a 
common waste and vent pipe. In such a system, the piping is adequately sized to provide free 
movement of air above the flow line of the drain. 

Common Vent . A vertical vent that serves two fixtures and connects in compliance with 
248 CMR 10.16: Table 1. 

Conductor . A pipe that is inside a building and that conveys storm water from the roof to a 
storm drain or combined building sewer/storm sewer. 

Continuous Vent . A vertical vent that is a continuation of the vertical drain to which it connects. 

Critical Level . In the potable water supply piping, the minimum elevation that a backflow 
prevention device or anti-siphon vacuum breaker is installed, above the flood level rim of the 
fixture or receptacle it is to serve. 

Cross Connection . Any actual or potential physical connection or arrangement between a pipe 
containing potable water from a public water system and any non-potable water supply, piping 
arrangement, or equipment, including, but not limited to waste pipe, soil pipe, sewer drain or 
other unapproved sources. {See Back-flow and Back-siphonage.) 

Dead End . A branch leading from a soil, waste, or vent pipe, building drain, or building sewer, 
and terminating at a developed length of two feet or more by means of a plug, cap or other closed 
fitting. 

Decontamination. The reduction or removal of microbial or hazardous chemical contamination 
from surfaces, liquids or spaces. 



3/1 1/05 248 CMR - 86 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



10.03: continued 




Dedicated Systems 

(a) Dedicated Acid Waste and Special Hazardous Waste Systems . Ail acid drainage or 
special drainage and acid vent piping or special vent piping normally associated with exterior 
or interior acid neutralizing or hazardous waste treatment devices. 

(b) Dedicated Gasoline. Oil and Sand Systems . AJl drainage and vent piping normally 
associated with exterior or interior gasoline, oil and sand Separators. 

(c) Dedicated Grease Systems . All sanitary drainage and vent pipes normally associated 
with exterior grease interceptors/separators. 

(d) Dedicated Gray Water Recycling System . Includes all piping, valves, pumps, meters, 
retaining tanks for exterior or interior gray water collection points. 

(e) Dedicated Waste Water Recycling System . Shall be considered the assembly of all 
piping, valves, pumps, meters and retaining tanks for installation at exterior or interior waste 
water recycling system locations that shall include but not be limited to collection points and 
points of use. 

Developed Length . The length of a pipeline as measured along the center line of the pipe or 
fittings. 

Diameter . The nominal diameter as designated commercially. 

Double Offset . Two changes of direction that are or have been installed in succession or series 
in a continuous pipe. 

Domestic Sewage . The waterbome wastes derived from ordinary living processes. 

Drain . A horizontal pipe that carries waste water or waterbome waste in a drainage system. 

Drainage System . Includes all the piping contained within a public or private premises that 
conveys sewage, rain water, or other liquid wastes to an appropriate point of disposal. It does 
not include the mains of a public sewer system or private or public sewage treatment or disposal 
plant. 

Drainage System. Building Gravity . A drainage system that drains via the force of gravity into 
a building sewer. 

Dual Vent . {See Common Vent) 

Durham System . Soil or waste systems where all piping is threaded pipe that uses recessed 
drainage fittings to correspond to the types of piping. 

Dwelling -- Single . A room or group of rooms, forming a single habitable unit that is an 
independent building enclosed within its own exterior walls, roof and foundation, with facilities 
which are used, or intended to be used, for sleeping, living, cooking, and eating; and where the 
sewer connection and water supply are within the building's own premise and is separate from 
and completely independent of any other dwelling. 

Dwelling ~ Multiple . Three, or more single dwellings that are not independent buildings, that 
share exterior walls, a roof, and a foundation and where a corrunon sewer connection and water 
supply are contained within the premise. 

Dwelling - Two Family . Two single dwellings that are not independent buildings, that share 
a common exterior wall, a roof, and a foundation and a where a conmion water supply and sewer 
connection are contained within its own premises. 

Effective Opening . The minimum cross-sectional area at the point of water supply discharge, 
measured or expressed in terms of (a) if the opening is circular as the diameter of a circle, or (b) 
if the opening is not circular, as the diameter of a circle having the equivalent cross sectional area 
of the opening. 



3/11/05 248 CMR -87 



248 CMR: BOARD OF STATE EXAMINERS 
. OF PLUMBERS AND GAS FITTERS 



10.03: continued 

Existine Work . A plumbing system or any part thereof installed prior to March 11, 2005. 

Fire Line . A system of pipes and equipment used exclusively to supply water for extinguishing 
fires. 

Fixture fPlumbing Fixture) . Installed receptacles, devices or appliances that are either supplied 
with water and/or receive and/or discharge liquids, or liquid-bome wastes, or both, with or 
without discharge into the drainage system with which they may be directly or indirectly 
connected. 

Fixture Branch . A pipe connecting several fixtures. 

Fixture Drain . A drain connected to the trap of one fixture. 

Fixture Supply . The water supply pipe that connects a fixture to either a branch water supply 
pipe or directly to a main water supply pipe. 

Fixture Unit . The rate of discharge of water through a plumbing fixture wherein IV2 gallons per 
minute is equal to one fixture unit. 

Flood Level Rim . The edge of a receptacle from which water overflows. 

Flooded . When the liquid in a fixture or receptacle rises to the flood level rim. 

Flow Pressure CResidual Pressure) . The pressure in a water supply pipe as measured at the faucet 
or water outlet when the faucet or water outlet is wide open and flowing. 

Flush Valve . A device that is located at the bottom of a tank and that is used for flushing toilets 
and similar fixtures. 

Rushometer Valve . A device used for flushing purposes that discharges a predetermined 
quantity of water into fixtures and where the device is closed by direct water pressure. 

Genetics . The branch of biology that deals with heredity and variations of organisms. 

Grade. The fall (slope) 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 per foot length of pipe. 

Gray-water. Used water out-flowing from a clothes-washer, shower, bathtub or bathroom sink 
and reused on the same site for below ground irrigation only. Gray-water is typically not treated. 

Grease Interceptor . A passive interceptor whose rated flow exceeds 50 gpm (189 L/m). 
(See Interceptor) 

Grease Trap . A passive interceptor whose rated flow is 50 gpm (189 L/m) or less. (See 
Interceptor) 

Hangers . (See Supports) 

Hazardous Waste. A waste, or combination of wastes, which because of its quantity, 
concentration, or physical, chemical or infectious characteristics may cause, or significantly 
contribute to an increase in mortality or an increase in serious irreversible, or incapacitating 
reversible illness or pose a substantial present or potential hazard to human health, safety, or 
welfare or to the environment when improperly treated, stored, transported, used or disposed of, 
or otherwise managed. See 310 CMR 30.00 for possible exemptions and for "Mixed waste." 

Hazardous Wastes. Piping or Treatment . Wastes which require special treatment before entry 
into a normal plumbing system. 



3/11/05 248 CMR -88 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



10.03: continued 

Hazardous Waste Pipe . Pipes which convey hazardous wastes. 

Horizontal Branch Drain . A drain branch pipe that extends laterally from a soil or waste stack 
or a building drain, that may or may not have vertical sections or branches, that receives the 
discharge from one or more fixture drains and that conducts the discharge to the soil or waste 
stack or to the building drain. 

Horizontal Pipe . Any pipe or fitting that makes an angle of less than 45° in reference to a 
horizontal plane. 

Hot Water . Water at a temperature of at least 120°F. 

Individual Sewage Disposal System . A system for disposal or treatment of domestic sewage by 
means of a septic tank or sewage treatment plant wherein the system is designed for use apart 
from a public sewer and serves a single establishment or building where a public sewer is not 
available. 

Indirect Waste Pipe . A waste pipe that does not connect directly with a drainage system, but 
discharges into a drainage system through an air break or air gap into a properly wasted and 
vented trap, fixture, receptacle or interceptor. 

Individual Vent . A pipe installed to vent a fixture drain. It connects with the vent system above 
• the fixture served or terminates at a point above the roof level. 

Individual Water Supp ly. A water supply, other than a public water supply, that serves one or 
more buildings, dwellings or structures. 

Industrial Waste Water ! Water that has been contaminated with by-products of industrial 
manufacturing processes. 

Industrial Wastes . Liquid wastes that result from the processes employed in industrial and 
commercial establishments. 

Insanitary . Contrary to sanitary principles; injurious to health. 

Interceptor . A device designed and installed to separate and retain for removal, by automatic or 
manual (passive) means deleterious, hazardous, or undesirable matter from nonrial wastes and 
permits normal sewage or liquid wastes to discharge into the drainage system by gravity. 

Installed . An altered, changed, or new installation. 

Irrigation System . A system of water distribution piping used to wet or moisten the landscape. 

Leaching Well or Pit . A pit or receptacle having porous walls that permits the contents to seep 
into the ground. 

Leader . An exterior drainage pipe for conveying storm water from a roof or gutter drains. 

Liquid Waste . Discharge from any fixture, appliance, area or appurtenance that does not contain 
human or animal waste matter suspended in a solution. 

Load Factor . The percentage of the total connected fixture unit flow which is likely to occur at 
any point in the drainage system. It varies with the type of occupancy, the total flow unit above 
this point being considered, and with the probability factor of simultaneous use. 

Loop Vent . A branch vent that serves two or more floor-outlet fixtures that are battery wasted. 
The loop vent extends from the top of the horizontal soil and/or waste branch in front of the last 
fixture waste and connects to a vent stack or stack vent that is adjacent to the down-stream end 
of the horizontal branch. 

3/1 1/05 248 CMR - 89 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 

Main. The principal pipe artery to which branches may be connected. 

Materials . All piping, tubing and fittings, drains and receptacles, interceptors and protectors, 
hangers and supports, covers and coverings, appliances and other devices and appurtenances 
used, or referred to, in the definitions of Plumbing, Plumbing Fixtures and Plumbing Systems. 

Mezzanine . An intermediate or fractional level between a floor and a ceiling that projects in the 
form of a balcony over the floor and wherein the aggregate floor area of the intermediate or 
fractional level is less than 33% of the area of the floor over which it is located. 

Non-potable Water . Water that does not meet the standards of potable water. 

Nuisance . Public nuisance as known in common law or in equity jurisprudence; what is 
dangerous to human life or detrimental to health; what building, structure or premise is not 
sufficiently ventilated, sewered, drained, cleaned or lighted, in reference to its intended or actual 
use; or what renders the air or human food or drink or water supply unwholesome. 

Offset . A combination of elbows or bends which brings a pipe out of line with one section of 
piping but into a line parallel with another section of piping. 

pH . The negative logarithm of the hydrogen-ion concentration used in expressing both acidity 
and alkalinity on a scale whose values run from zero to 14, with a lower value of less than seven 
indicating increasing acidity and values greater than seven indicating increasing alkalinity. A 
value of seven would indicate a neutral pH condition. 

Person . A natural person, his heirs, executors, administrators or assigns; a firm, partnership, 
corporation, institution, association or group, its or their successors or assigns; or a city, town, 
county, or other governmental unit, owning or renting, leasing or controlling property, or 
carrying on an activity regulated by M.G.L. c. 142 or 248 CMR. 

Plumbing . Plumbing includes the work and/or practice, materials and fixtures used in the 
installation, removal, maintenance, extension and alteration of a plumbing system; of all piping, 
fixtures, fixed appliances and appurtenances in connection with any of the following: sanitary 
drainage or storai drainage facilities, hazardous wastes, the venting system and the public or 
private water-supply systems, within or adjacent to any building, structure, or conveyance; to 
their connection with any point of public disposal or other acceptable terminal within the 
property line. 

It is the interpretation of this Board that that portion of the plumbing system consisting of all 
building drains beginning from a point ten feet outside from the inside face of the foundation 
wall and running into the building structure shall be installed by a licensed plumber only. On 
public or private water supply systems, any pipe beginning on the house side of the metering 
device or, if none, the main control valve immediately inside the foundation wall to the point of 
actual connection to heating/cooling equipment, appliance, fixture, etc. shall be installed by a 
licensed plumber only. When a metering device is installed as part of the water supply and 
distribution system for a building or group of buildings at a location outside the foundation 
wall(s) of said building(s), the cutting, fitting, connection and testing of all water supply piping 
between the metering device and said building(s) shall be performed by a licensed plumber in 
accordance with the requirements of 248 CMR. Other work involved in the installation of such 
piping such as trenching, tunneling, placement of assembled piping in the trenches, backfilling 
etc., may be performed by unlicensed personnel. 

Plumbing System . The water supply and distribution pipes; plumbing fixtures and traps; soil, 
waste, and vent pipes; building sanitary and storm drains including the respective cormections, 
devices, and appurtenances of the drains that are connected a point of public disposal or other 
appropriate terminal within the propeity line. 



3/11/05 248 CMR -90 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 




Potable Water . Water that does not contain impurities in amounts sufficient to cause disease or 
harmful physiological effects. Its bacteriological and chemical quality shall conform to the 
pertinent requirements of 310 CMR, the regulations of the Massachusetts Department of 
Environmental Protection or to the pertinent local Board of Health regulations. 

Private or Private Use. In the classification of plumbing fixtures, private shall apply to fixtures 
in residences, apartments, condominiums and to private guest rooms in hotels and motels. 

Private Sewer . A sewer, serving two or more buildings, privately owned, and not directly 
controlled by a public authority. 

Public or Public Use . In the classification of plumbing fixtures, public shall apply to every 
fixture not defined under Private or Private Use. 

Public Sewer . A common sewer directly controlled by public authority. 

Public Water Main . A water supply pipe for public use controlled by public authority. 

Purification Waste . A by-product of waste material generated by or from the fermentation 
process to produce a pure substance. 

Purified Water . Water produced by distillation, deionization, reverse osmosis, or other methods 
so that it meets the requirements of purified water in the most recent edition of the United State 
Pharmacopoeia. 

Readily Accessible . Direct access without the necessity of removing or moving any panel, door, 
lock or similar- obstruction. 

Receptor . A fixture or device that receives the discharge from indirect waste pipes. 

Recombinant Deoxyribonucleic Acid DNA Molecules . Viable organisms containing molecules 
made outside living cells by joining natural or synthetic DNA segments to DNA molecules that 
can replicate in a living cell, or DNA molecules that can result from the replication of those 
described above. Such use shall be in accordance with the NIH Guidelines for Research 
Involving Recombinant DNA Molecules, Federal Register Vol. 49, No. 227, November 23, 
1984, P.462266. 

Relief Vent . A vent that is designed to permit additional circulation of air between drainage and 
vent systems. 

Return Offset . A double offset installed so that it retums the pipe to its original alignment. 

Reverse Osmosis . A water treatment process that removes undesirable materials from water by 
using pressure to force the water molecules through a semi-permeable membrane. This process 
is referred to as "reverse" osmosis. Pressure forces the water to flow in the reverse direction 
(from the concentrated solution to the dilute solution) to the flow direction (from the dilute to 
the concentrated) in the process of natural osmosis. Reverse osmosis removes ionized salts, 
colloids, and organic molecules down to a molecular weight of 100. This process is sometimes 
referred to as hyperfiltration. 

Reverse Osmosis - rWater Treatment Unit") . A device installed within a potable drinking water 
system that uses reverse osmosis as the primary technology for processing potable tap water into 
high quality drinking water. The reverse osmosis drinking water device is designed to separate 
water from undesirable dissolved and undissolved substances such as particulate matter, salts, 
metals, organic matter, and niicroorganisms. 

Rim . An unobstructed open edge of a fixture. 



3/11/05 248 CMR -91 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 



Riser . A water supply pipe which extends vertically one full story or more to convey water to 
branches or to a group of fixtures. 

Roof Drain . A drain receptor installed to receive water that collects on the surface of a roof and 
conveys the discharge water into a leader or a conductor. 

Roughing-in . The installation of all parts of the plumbing system that can be completed prior 
to the installation of fixtures. This includes drainage piping, water supply piping, vent piping, 
the necessary fixture supports, and any fixtures that are built into the building. 

Sand Trap . See Interceptor. 

Sanitary Sewer . A pipe that carries sewage but does not carry storm, surface, clear water or 
ground water. 

Seepage Well or Pit . A covered pit with open jointed lining. The septic tank effluent the pit 
receives may seep or leach into the surrounding porous soil through the open jointed lining. 

Separator . See Interceptor. 

Septic Tank . A watertight receptacle to receive sewage from a building sewer or building drain 
which is designed and constructed to penmit sufficient retention of wastewater to allow for the 
separation of scum and sludge and the partial digestion of organic matter before discharge of the 
liquid portion to a soil absorption system. 

Sewage . Any liquid waste containing animal or vegetable matter in suspension or solution, and 
the waste may include liquids containing chemicals in solution. 

Sewage Ejectors . A device for moving sewage by entraining it on a high velocity steam, air or 
water jet. 

Sewage Pump . A permanently installed mechanical device, except an ejector, for removing 
sewage or liquid waste from a sump. 

Side Vent . A vent that coimects to a drain pipe via a fitting where the angle of the vent is less 
than 45° from the vertical. 

Siphon Breaker . A siphon breaker is a valve device, or appurtenance, constructed and installed 
to prevent back flow in the plumbing system or any portion thereof (See Back-flow and 
Back-siphonage) 

Size of Pipe and Tubing . {See Diameter) 

Slope . {See Grade) 

Soil Pipe . Any pipe that conveys' the discharge of toilets, urinals or fixtures having similar 
functions to the building drain or building sewer. The discharge may be conveyed with or 
without the discbarge from other fixtures. 

Stack . A general term for any vertical line of soil, waste, vent or inside conductor piping which 
extends beyond at least one branch interval in height. 

Stack Group . A term that is applied to the location of fixtures in relation to the stack so that by 
means of proper fittings vents may be reduced to a minimum. 

Stack Vent . The portion of a soil or waste stack that is six inches above the highest flood level 
rim of the highest fixture cormected to the stack. The stack vent terminates in compliance with 
248 CMR 10.16. 



3/1 1/05 248 CMR - 92 





248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 

Stack Venting . A method of venting a fixture or fixtures through a soil or waste stack. 

Sterilization . The act or process that is physical or chemical that results in the complete 
destruction of microorganisms. 

Storm Drainage System . A system that is used for conveying rain water, surface water, 
condensate, cooling water, sprinkler discharge or similar clear liquid wastes to the storm sewer 
or other place of disposal. The clear liquid waste conveyed excludes sewage or industrial waste. 

Storm Sewer . A sewer used for conveying rain water, surface water, condensate, cooling water, 
or similar clear liquid wastes. 

Subsoil Drain . A drain that collects subsurface, ground or seepage water and conveys it to a 
place of disposal. 

Sump . A tank or pit that receives sewage or liquid waste, that is located below the normal grade 
of the gravity drainage system, and that must be emptied by mechanical means. 

Sump Pump . A mechanical device, except for an ejector or bucket, that removes clear liquid 
waste from a sump. 

Supports — Hangers — Anchors . Devices for supporting and securing pipe, fixtures, and 
equipment, to walls, ceilings, floors or structural members. 

Swimming Pool . Any structure, basin, chamber, or tank containing an artificial body of water 
for swimming, diving, or recreational bathing and having a depth of two feet or more at any 
point. 

Trap . A fitting or device that provides a liquid seal that prevents the emission of sewer gases 
without materially effecting the flow of sewage or waste water through it. 

Trap Arm . That portion of a fixture drain or waste drain between the trap and its vent. 

Trap Primer . A trap primer is a device or system of piping to maintain a water seal in a trap. 

Trap Seal . The vertical distance between the crown weir and the top of the dip of the trap. 

Treated Water . Potable water that has passed through a system for the purpose of purification, 
aeration, filtration, disinfection, softening, conditioning, fluoridation, stabilization, or corrosion 
correction and/or has had chemicals added which may alter its physical, chemical or radiological 
quality. 

Troughs . An open conduit, drain, channel, trench or gutter. 

Unisex/Handicap Toilet Room . A room containing one toilet and one lavatory available for use 
by either sex. 

Vacuum . Any pressure less than that exerted by the atmosphere. 

Vacuum Breaker. Non-pressure Type rAtmospheric\ See Anti-Siphon Vacuum Breaker — 
Non-pressure Type. 

Vacuum Breaker. Pressure Type . See Anti-Siphon Vacuum Breaker ~ Pressure Type. 

Vacuum Relief Valve . A device to prevent an excessive vacuum in a water storage tank or 
heater. 



3/11/05 248 CMR -93 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.03: continued 



Vent - Automatic . A mechanical device that opens as a result of negative pressure in the 
drainage system to prevent trap siphonage, and closes gas and water tight when the pressure in 
the drainage system is equal to or greater than ambient pressure to prevent the entry of sewer gas 
into the building. 

Vent Pipe . Part of a vent system. 

Vent Stack . A vertical vent pipe installed to provide circulation of air to and from the drainage 
system. 

Vent System . A pipe or pipes installed to provide a flow of air to or from the drainage system 
or to provide a circulation of air within such system to protect trap seals from siphonage and 
back pressure. 

Vertical Pipe . Any pipe or fitting which makes an angle of 45° or less with the vertical plane. 

Wail Hung Toilet . A wall mounted toilet installed in such a way that no pait of the toilet touches 
the floor. 

Waste . See Liquid Waste. 

Waste Pipe . A pipe which conveys only waste. 

Water Distribution Pipe . A pipe within the building or on the premises that conveys water from 
the water service pipe to the point of usage. 

Water Filter . A device installed on a potable water system through which water flows for the 
reduction of turbidity, microorganisms, particulate matter, taste, color, odor or other 
contaminants. 

Water Main . A pipe used to convey the public water supply. 

Water of Questionable Safety . Water that passes through an isolated portion of the water piping 
distribution system. The system is defined as beginning at the outlet of a back-flow preventing 
device and ends at a point of final or actual connection with heating/cooling equipment or other 
fixtures, apparatus and appliances that require water for operation and process. 

Water Outlet . As used in connection with a water-distribution system, a discharge opening for 
water: 

(a) to a fixture; 

(b) to atmospheric pressure (except into an open tank which is part of the water supply 
system); 

(c) to a boiler or heating system; or 

(d) to any water operated device or equipment requiring water in a plumbing system. 

Water Service Pipe . The pipe from the municipal water main or private other source of water 
supply to the water distribution system of the building served. 

Water Softener . A device installed on a potable water system through which water flows for the 
reduction of hardness and other metals using the cation exchange process. 

Water Supply Svstem . The water service pipe, the water distribution pipes, and the necessary 
connection pipes, fittings, control valves, and all appurtenances in or adjacent to a building or 
premises. 




3/11/05 248 CMR -94 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



10.03:. continued 



Water Treatment Device . A device which means any instrument or product sold, rented or 
leased, or offered for sale, rental or lease designed or claimed either to benefit potable water 
systems or to treat water intended for human consumption or use; including but not limited to, 
instruments or products using filtration, distillation, absorption, adsoiption/ion exchange, reverse 
osmosis or other treatoient processes or technologies such as magnetic or electro-magnetic field 
and catalytic conversion which is claimed to alter the radiological, chemical or physical 
properties of water. 

Water Vending Machine . Any self-service device which, upon receipt of payment, dispenses 
purified or drinking water in bulk without the necessity of replenishing the device between each 
vending operation. The device is connected to a public or private system. 

Wet Vent . A waste pipe that also serves as a vent, on the same floor level. 

Workmanship . Work of such character that will fully secure the desired or needed results. 

Yoke Vent (Relief Vent-footl . A pipe connecting upward from a soil or waste stack to a vent 
stack and designed for the purpose of preventing pressure changes in the stack. 



10.04: Testing and Safetv 




(1) Surveyed . Prior to the commencement of work, all portions of existing systems that are 
directly affected by proposed plumbing work shall be surveyed by the licensed plumber to insure 
that the existing work is adequate to support the proposed work. 

(2) Inspections of the Plumbing System . An Inspection is required for all plumbing work 
pursuant to 248 CMR 3.00. In addition, the following requirements shall be satisfied. 

(a) Inspection of Rough Plumbing . 

1. The piping of the plumbing, drainage, and venting systems shall be tested as part of 
the Inspection. 

2. Upon proper notice of a request for an Inspection of the rough plumbing, the 
Inspector shall make the Inspection within two working days after receipt of such notice. 

3. The Inspector shall proceed with the Inspection only if the licensed plumber 
requesting the Inspection is on site, with a current edition of 248 CMR the Massachusetts 
Fuel Gas and Plumbing Code. 

4 Methods of Testing the Drainage and Vent System . 

a. Water. Test . A water test shall be applied to the drainage system either in its 
entirety or in sections. If applied to the entire system, all openings in the piping shall 
be tightly closed, except the highest opening and the system filled with water to point 
of overflow. If the system is tested in sections, each openingshall be lightly plugged, 
except the highest opening of the section under test, and each section shall be filled 
with water. When testing successive sections, at least the upper ten feet of the next 
preceding section shall be tested, so that no joint or pipe in the building (except the 
uppermost ten feet of the system) shall have been submitted to a test that utilizes less 
than a ten foot head of water. The water shall be kept in the system or in the portion 
under test for at least 15 minutes before the inspection starts: the system shall then 
be tight at all points. 

b. Air Test . An air test shall be performed by attaching an air compressor testing 
apparatus to any suitable opening, and, after closing all other inlets and outlets to the 
system, forcing air into the system, until there is a uniform gauge pressure of five 
P.S.I.G. or sufficient pressure to balance a column of mercury ten inches in height. 
This pressure shall be held without introduction of additional air for a period of at 
least 15 minutes. The gauge used for this test shall be calibrated in increments no 
greater than 1/10 of a pound. 



3/11/05 248 CMR -95 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.04: continued 

c. Peppermint Test . 

i. A peppermint test shall only be used and perforaied on the concealed piping 
within existing buildings or structures. The test shall be applied by creating a 
liquid mixture with the appropriate amount of oil of peppermint and hot water. 
The mixture shall contain two ounces of oil of peppermint for evei7 one gallon 
of hot water. This mixmre shall be sufficient for testing a stack 50 feet in height 
or the equivalent offive branch intervals, (includingthebasement, if applicable), 
ii. The mixture shall be poured down a main stack, 
iii. The stack opening shall then be sealed. 

iv. The individual who has handled the oil of peppermint or the peppermint 
mixture shall not enter the building until the test has been completed. The 
presence of the aroma of the oil of peppermint may potentially be present on the 
individual who created the mixture and will compromise the building 
environment under test and observation. 

V. After the completion of the test and upon irrunediate inspection of the 
building, if the odor of peppermint is prominent in a given area, then the test 
indicates a defect in that portion of the system in that vicinity, 

d. Smoke Test . 

i. A smoke test shall be performed by obtaining smoke injector equipment 
designed for the purpose of producing and introducing a heavy volume of smoke. 
Smoke injector testing equipment utilizes several methods for producing 
adequate smoke conditions for testing; manufacturer's recommendations shall be 
observed. 

ii. The discharge hose from the smoke injector equipment shall be extended to 
and through a smoke test cap or plug and all voids encompassing the hose shall 
be sealed with putty or other similar compound. 

iii. When the entire system or portion thereof is charged with smoke, air 
pressure equal to one-inch water column shall be applied, 
iv. Defects, failures and leaks in the piping system will be revealed by plumes 
of smoke that will discharge through them. 
2. Methods of Testing the Water Distribution and Supply System . Upon completion of 
a section or of the entire water supply system when roughed, it shall be tested and proved 
tight under a pressure not less than 125 pounds per square inch. Water used for tests 
shall be obtained from a potable supply source. Air or other inert gases may be used for 
testing, 
(b) Final Test and Inspection . 

1. Within five days after the plumbing work is sufficiently advanced so that Principle 
No. 6 in 248 CMR 10.02(6) is satisfied, the plumber who performed the work or the 
Permit Holder shall notify the Inspector. 

2. Within two working days after receipt of such notice, the Inspector shall proceed with 
the inspection and examine the work with the water turned on to the fixtures. If 
requested by the Inspector, the licensed plumber shall be present with a current edition 
of 248 CMR. 

3. If the installation is found in compliance with 248 CMR an Inspection approval tag 
shall be issued by the Inspector. 

4. Defects . 

a. Should the examination of work disclose any defects or violations of 248 CMR, 
the plumber shall be required to remedy the violations and defects, without delay, and 
notify the Inspector for a repeat Inspection of the installation. 

b. If the licensee holding a permit for work in a building turns the water on and fails 
to properly notify the Inspector as required, or neglects to remedy any defects or 
violations that may have been found and pointed out to him/her by the Inspector 
he/she shall not be granted any further permits until he/she has complied with 
248 CMR. Other disciplinary action may be pursued by the Inspector as provided for 

. in M.G.L. c. 142 and 248 CMR. 

(5) Defective Materials and Poor Workmanship . If at the time of testing and Inspection leaks, 
defective or patched materials, or evidence of unskilled or inferior workmanship is found with 
the plumbing installation, the following procedures shall be followed: 

3/11/05 248 CMR -96 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.04: continued 



(a) The Inspector shall condemn the affected part(s) or entire system. 

(b) The Inspector shall order that the defective parts, unskilled or inferior workmanship be 
removed and corrected. 

(c) No further progress shall be allowed with the installation until the defective parts, 
unskilled or inferior workmanship is compliant with 248 CMR 3.00 through 10.00. 

(6) Repairs and Alterations . 

(a) Deviations from the provisions of 248 CMR may be permitted in existing buildings or 
premises where plumbing installations are to be altered, repaired, or renovated. The 
deviations shall be negotiated by the Permit Holder and the Inspector prior to the installation: 
The deviations may be allowed provided that the deviations ai-e found to be necessary and 
conform to the scope and intent of 248 CMR. 10.00, 

(b) Whenever compliance with all of the provisions of 248 CMR 10.00 fails to eliminate or 
alleviate a nuisance that may involve health or safety hazards, the Inspector shall notify the 
owner or his or her agent in writing of the violations. The owner or his or her agent shall 
notify a licensed plumber to install such additional plumbing or equipment that may be found 
necessary by the Inspector. 

(7) Defective Plumbing . 

(a) Whenever there is reason to believe that the plumbing system of any building has 
become defective, it shall be subjected to test and/or inspection, and any defects found shall 
be corrected as required in writing by the Inspector. 

(b) Whenever the work subject to a peiTnit complies with the provisions 9f 248 CMR 3.00 
through 10.00, but the Inspector notes other existing plumbing or gas fitting that may cause 
a health or safety hazai'd, the Inspector shall notify the owner of the hazard in writing. 

(8) Maintenance . The plumbing and drainage system of any premises shall be caused to be 
maintained in a sanitary and safe operating condition by the owner or his or her agent. 

(9) Demolition and Removal . ~ 

(a) When a fixture that is connected to the plumbing system is to be permanently removed, 
a permit for the work shall be secured. All plumbing connections to that fixture shall be 
made water and gas tight. 

(b) Insofar as they ai-e pertinent, the provisions of 248 CMR 10.04(9)(a) shall also apply 
when a building, structure, dwelling or tenant space is to be demolished. 

(10) Personal Safety . 

(a) In General . All personnel working on plumbing systems water, waste, vents systems, 
fixtures and, appliances and appurtenances shall wear appropriate protected clothing and/or 
equipment and conform to M.G.L. c. 1 IIF, § 2, the "Right to Know Law". 

(b) Special Labs . All licensed plumbers and plumbing apprentices installing pipe 
connections or' working on drains to hospital waste and vent systems, mortuary waste and 
vent systems, laboratory waste and vent systems, dental waste and vent systems and 
plumbing systems in radioactive sensitive areas shall have the surface of their body and 
clothing protected by disposable or washable gowns similar or equal to the gowns, gloves 
and face masks worn by surgical staff. 



10.05: General Regulations 



(1) Conforming with 248 CMR 10.00 . Except as otherwise allowed by specific exception 
granted by the Board under 248 CMR 3.00, all plumbing which is installed shall confoim to the 
following general requirements as outlined in 248 CMR 10.00. 

(2) Pitch of Horizontal Drainage Piping . 

(a) Horizontal drainage piping shall be run in straight practical alignment and at a consistent 
uniform pitch. 

(b) Horizontal drainage piping which is three inches in diameter or smaller shall be installed 
with a minimum uniform pitch of V4 inch per foot. 



3/1 1/05 248 CMR - 97 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.05: continued 



(c) Horizontal drainage piping which is larger than three inches in diameter shall be 
installed with a minimum uniform pitch of Vb inch per foot. 

(d) Storm or sanitary drains shall be installed at a slope that produces a computed velocity 
of discharge of not less than two feet per second. 

(3) Changes in Direction of Drainage Piping . 

(a) Fittings to Be Used . 

1. Changes in the direction of drainage piping shall be made by the use of wyes, long 
sweep quarter bends, fifth, sixth, eighth or sixteenth bends, or their equivalent. 

2. Quarter bends, or their equivalent may be used in soil and waste lines when the 
change in the direction of the flow is from the horizontal to the vertical. 

3. Tees and crosses for vent fittings may be used for changes in the direction of vent 
piping only. 

4. Short sweep fittings may be used in a branch waste line when the waste line serves 
only one outlet and cleanouts are provided in accordance with 248 CMR 10.08. 

(b) Back to Back Fixtures . Back to back fixmres shall be installed: 

1 . with fittings that are designed to prevent the discharge of each fixture to mix prior to 
a change in horizontal direction; or 

2. with fittings especially designed to eliminate throw over from the discharge of one 
fixture to the discharge of the other fixture without compromising venting requirements. 

(4) Fittings and Connections Prohibited . 

(a) Fittings Prohibited . 

1 . No fitting that incorporates a straight T branch shall be used as a drainage fitting. 

2. No fitting or connection that has an enlargement chamber or that has a recess with 
a ledge or shoulder, or that incorporates a reduction in pipe area shall be used. 

3. No running threads, bands or saddles shall be used in a drainage system. 

4. No drainage pipe or vent piping shall be drilled, tapped, burned or welded. 

5. A fitting commonly referred to as a "Sisson Joint" is prohibited. 

(b) Obstruction to Flow . 

1 . No fitting, connection, device, or method of installation that obstructs or retards the 
flow of water, wastes, sewage, or air in drainage or venting systems where the 
obstruction results in flow resistance that is greater than the normal frictional resistance 
to flow shall be used unless otherwise specifically indicated elsewhere in 248 CMR 
10.00. 

2. The enlargement of a three-inch closet bend or stub to four inches shall not be 
considered an obstruction under this provision provided that the horizontal flow line or 
insert is continuous without forming a ledge. 

(c) Dead Ends . Dead ends shall not be used as any part of a drainage system except where 
the use of a dead end is necessary to extend a cleanout so as to be accessible. 

(d) Heel or Side-inlet Bends . A heel or side-inlet quarter bend shall not be used as a dry 
vent when the inlet is placed in a horizontal position, or any similar arrangement of pipe and 
fittings producing a similar effect, except when the entire fitting is part of a dry vent 
arrangement. 

(5) Trenching. Tunneling and Backfilling , 
(a) Trenching and Bedding . 

1 . Trenches shall be of sufficient width to permit proper installation of the pipe. 

2. Where shoring is required, ample allowance shall be made in the trench's width to 
facilitate proper working conditions. 

3. Where trenches are excavated to a grade such that the bottom of the trench foirns the 
bed for the pipe: 

a. care must be exercised to provide solid bearing between joints; and 

b. bell holes shall be provided at points where the pipe is joined. 

4. Where trenches are excavated below grade such that the bottom of the trench does 
not form the bed for the pipe, the trench shall be back-filled to grade with sand tamped 
in place so as to provide a uniform bearing surface for the pipe between joints. 



3/11/05 248 CMR -98 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.05: continued 



5. Where rock is encountered in trenching; 

a. The rock shall be removed to a point at least three inches below the grade line of 
the trench and the trench shall be backfilled to grade with sand tamped in place so as 
to provide a uniform bearing for the pipe between joints; and 

b. care shall be exercised to ensure that no portion of the pipe, including its joints, 
rests on any portion of a rock. 

6. If soft materials'of poor bearing qualities are found at the bottom of the trench: 

a. a concrete foundation shall be provided to ensure a firm foundation for the pipe; 
and 

b. the concrete foundation shall be bedded with sand tamped in place so as to 
provide a uniform bearing for the pipe between joints. 

7. For PVC and ABS piping underground, >See 248 CMR 10.06(2Xo)19.: Piping Trench 
Installation. 

(b) Tunneling . 

1 . Where necessary, pipe may be installed by tunnelmg or jacking, or a combination of 
both. In such cases special care shall be exercised to protect the pipe from damage either 
during installation or from subsequent uneven loading. 

2. Where earth tunnels are used, adequate supporting strucUires shall be provided to 
prevent future settling or caving. 

3. Pipe may be installed in a larger conduit that has been jacked through unexcavated 
portions of the trench. 

(c) Backfilling . 

1. Until the crown of the pipe is covered by at least two feet of tamped earth 
considerable care shall be exercised in backfilling trenches. 

2. Loose eaith, free of rocks, broken concrete, frozen chunks and other mbble, shall be 
carefully placed in the trench in six-inch layers and tamped in place. 

3. Care shall be taken to thoroughly compact the backfill under and beside the pipe to 
be sure that the pipe is properly supported. 

4. Backfill shall be brought up evenly on both sides of the pipe so that it retains proper 
alignment. 

(d) Safety Pi-ecautions . All laws, mles and regulations pertaining to safety and protection 
of workmen, other persons in the vicinity, and neighboring property shall be observed where 
excavating, trenching, blasting, or other hazardous operations are being conducted. 

(6) Structural Safety . In the process of installing or repairing any plumbing installation, the 
finished floors, walls, ceilings, tile work or any other part of the building or premises that must 
be changed or replaced shall be returned to a safe structural condition upon completion of the 
plumbing work. 

(7) Workmanship . Workmanship shall conform to generally accepted good practice. Particular 
attention shall be applied to all piping installations in regard to the alignment of piping (straight, 
level, plumb). 

(8) Protection of Piping . 

(a) Corrosion . Any pipe that is in contact with or that passes through or under a masonry 
product, concrete product or any other similar and potentially con-osive material shall be 
protected against external damage by application of a protective sleeve, coating, wrapping, 
or other means that will prevent corrosion. 

(b) Cutting, Notching, or Drilling . 

1. A structural member of any building shall not be weakened or impaired by cutting, 
drilling or notching. 

2. Any cutting, drilling, or notching shall be completed in compliance with the local 
Inspector of Buildings or as specified in 780 CMR: The Massachusetts State Building 

Code. 

(c) Freezing Prevention . 

1. No water supply or drainage piping shall be installed outside of or under a building 
in an exposed, open or unhealed area. 



3/11/05 248 CMR -99 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.05: continued 



2. For water supply or drainage piping ttiat is installed in an exterior wall, 
unconditioned space or similar areas that may be directly influenced by freezing 
temperatures, adequate provision shall be made to protect all pipes from freezing. 

3. The protection and covering of water and waste pipes shall be the responsibility of 
the instalhng plumber. 

(d) Rat Proofing . 

1 . All strainer plates on drain inlets shall be designed and installed so that the diameter 
of the opening is no greater than or equal to '/z inch. 

2. Meter boxes shall be constructed in such a manner that rats cannot enter a building 
by following the water service pipe from the box into the building. 

(e) Physical Damage . All exposed drainage piping, vent piping, or water piping in parking 
garages, in residential garages, warehouses or similar type buildings must be protected 
against physical damage from all types of vehicles such as automobiles, carts, pallet jacks 
or forklifts. 

(9) Prevent Damage to the Drainage System or Sewer . No person shall discharge by any means 
into a building drain or sewer the following matter: 

(a) ashes; 

(b) masonry products; 

(c) textiles; 

(d) paints; 

(d) solvents; 

(e) flanmriables; 

(f) corrosive or explosive liquid(s); 

(g) gas; 
(h) oil; 

(i) grease; or 

(j) any product that would or could obstruct, or damage a drain or sewer. 

(10) Detrimental Wastes . Waste that is detrimental to the public sewer system or to the 
functioning of the sewage treatment plant shall be treated and disposed of according to the 
requirements of the State, local or Federal authorities having jurisdiction. 

(11) Sleeves . The annular space between the sleeve and a pipe that passes through an exterior 
wall shall be made water tight or weather tight. 

(12) Second Hand or Previously Installed Plumbing Material . 

(a) No person shall install second hand or previously installed plumbing material or 
a plumbing fixture unless the fixture or material complies with the minimum standards set 
forth in 248 CMR 10.00. 

(b) If installation of a second hand or previously installed plumbing fixture is in compliance 
with 248 CMR 10.00, before installation, it shall be thoroughly cleansed.and disinfected. 

(13) Piping in Relation to Footings . 

(a) Outside of Footings . Piping which is installed outside of and below a footing shall not 
destroy the bearing value of the soil. 

(b) Through or Under Footings. Foundations or Walls . No pipe shall be installed through 
or under a footing, foundation or wall, except when a provision is made in the footing to 
carry the building or structural loads without transmitting such loads to the pipe. 

(14) Drainage Below Sewer Level . Drainage piping which is located below the sewer shall be 
installed as provided in 248 CMR 10.15(10) 

(15) Connections to Plumbing System Required . All plumbing fixtures, drains and 
appurtenances which are used to receive or discharge liquid waste or sewage waste shall be 
properly connected to the sanitary or storm drainage system of the building or premises in 
accordance with the requirements of 248 CMR 10.00. 



3/11/05 248 CMR -100 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.05: continued 



(16) Sewage Disposal Connections (Buildings') . 

(a) The plumbing of each building shall have an independent connection to a public sanitary 
sewer outside of building, unless, in the opinion of the Inspector, a single separate connection 
is not feasible. 

(b) If a public sanitary sewer is not available, the sewage shall be discharged into a sewage 
disposal system that complies with 310 CMR 15.00: The State Environmental Code, Title 5: 
Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of 
On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of 
Septage. 

(17) Location of Fixtures . 

(a) Light and Ventilation . Plumbing fixtures shall be located in compartments, rooms, 
spaces or areas that are provided with mechanical ventilation and illumination that conform 
to 105 CMR410.000: Minimum Standards of Fitiiess for Human Habitation (State Sanitary 
Code, Chapter 11) and 780 CMR: The Massachusetts State Building Code. 

(b) Improper Location . Piping, fixtures, or plumbing devices and equipment shall not be 
installed in a manner that will interfere with the normal operation of windows, doors, or other 
openings. 



10.06: Materials 



(1) Materials . 

(a) Minimum Standards . All materials, systems, and equipment used in the construction, 
installation, alteration, repair, replacement, or removal or any plumbing or drainage system 
or part thereof, shall conform at least to the standards listed.in 248 CMR 10.06, except that: 

1. the Inspector may allow the extension, addition to or relocation of existing water, 

soil, waste and/or vent pipes with materials of like grade or quality as permitted under 

248 CMR I0.04(6)(a); or 

2. materials not covered by the standards listed in 248 CMR 10.06 may be used with the 

approval of the Board as permitted under 248 CMR 3.04. 
(b)- Installation . 

1. All materials installed in plumbing systems shall be so handled and installed as to 
avoid damage so that the quality of the material will not be impaired. 

2. No defective or damaged materials, equipment or apparatus shall be installed or 
maintained. 

3. All materials used shall be installed in strict accordance with the standards under 
which the materials are accepted and approved by the Board, including the appendices 
of the standards, and in strict accordance with the manufacturer's instructioris. 

(c) Standards and Approval . 

1. Materials not listed in 248 CMR 10.06: TaWe 7 sliall be used only as provided for 

in 248 CMR 10.06(l)(a) or as permitted in 248 CMR 3.04. 

2 Abbreviations in 248 CMR 10.06: Table 1 refer to the following organizations: 

a. ANSI - Americgji National Standards Institute, 25 West 43"* Street, New York, 
New York 10036, 212-642-4900 

b. ASSE -- American Society of Sanitai7 Engineering, 90 1 Canterbui7 Road, Suite 
A, Westlake, OH44 145- 1480, 440-835-3040 

c. ASTM ~ American Society for Testing 8c Materials, 100 Barr Harbor Drive, 
West Conshohocken, PA 19428-2959, 610-832-9598 

d. American Society of Mechanical Engineers ( ASME), Three Park Avenue, New 
York, NY 10016-5990 

e. AWS~American Welding Society, P.O. Box 35 1040, 550 N.W. Lejune Road, 
Miami, FL 33126 

f. AWWA - American Water Works Association, 6666 West Quincy Ave., Denver, 
COLO. 80235, 303-794-7711 

g. CDA ~ Copper Development Association, P.O. Box 1305, 140 Konhans Road, 
Mechanicsburg, PA 170555, 717-795-5495 

h. CISPI - Cast Iron Soil Pipe Institute, 5959 Shallowford Road, Suite 419, 
Chattanooga, TN 37421, 615-892-0137 



3/11/05 248 CMR -101 



248 CMR: BOAJRD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTITERS 



10.06: continued 



i. CS - Commercial Standards/Commodity Standards Division, Office of Industry 

and Commerce, U.S. Department of Commerce, 14th St., between E & Constitution 

Ave., N.W., Washington, D.C. 20004, 202-377-2000 

j. FS ~ Federal Supply Service, Standards Division, General Services 

Administration, Washington, D.C. 20405, 202-472-1082 

j. NAMA " National Automatic Merchandising Association, 20 North Wacker Dr., 

Chicago, IL 60606, 312-346-0370 

1. MSS - Manufacturers Standardization Society, (of the) Valve and Fittings 

Industry, 127 Paric St., N.E., Vienna, VA 22180, 703-281-6613 

m. NIST - National Institute of Standards and Technology, U.S. Dept. of 

Commerce, Quincy Orchard & 1270, Gaithersburg, MD 20878, 301-948-2791 

n. NSF - International 789 North Dixboro Road, Ann Arbor, MI 48 104, 734-769- 

5361 

0. PDl - Plumbing and Drainage Institute, 800 Turnpike Street, Suite 300 North 

Andover, MA 01845, 978-557-0720 

p. PPI - Plastic Pipe Institute, 1 825 Connecticut Ave., NW, Suite 680, Washington, 

DC 20009, 202-462-9607 

q. PS ~ Product Standards (Published by Superintendent of Documents), U.S. 

Government Printing Office, North Capitol St., between G & H Sts., N.W. 

Washington, D.C. 2001 1, 202-783-3238 

r. Water Quality Association, 4151 Naperville Road, Lisle, Illinois 60632, 312- 

369-1600 

NOTE. Because material standards and specifications are subject to change, the designations 
carrying indication of the year of issue may thus become obsolete. 248 CMR 10.06, Table 1 
gives the full designations of standards current when 248 CMR was last promulgated. This table 
will be reviewed and updated by the Board at regular intei-vals. 

3. REFERENCED STANDARDS : The following is a listing of the standards 
referenced in 248 CMR 10.00, the effective date of the standard, the promulgating 
agency of the standard and the section(s) that refer to the standard. Many titles are 
referenced by both ANSI and ASME. 

ANSI . American National Standards Institute 
25 West 43'" Street 
New York, New York 10036 

Standard 

Reference Title 

Number 

ANSI/ASME 

Al 12.6.1-1997 (R2002) Supports for Off-the-Floor Plumbing Fixtures for Public Use 
ANSI/ASME ■ 

Al 12. 14. 1 (R2003) Backwater Valves 

ANSI/ASME 

Al 12. 14.3 (2000) Grease Interceptors 

ANSI/ASME 

Al 12. 14.4 (2001) Grease Removal Devices 

ANSI/ASME 

Al 12. 18.1 (2003) Plumbing Fixture Fittings 

ANSI/ASME 

A112.19.1-94(R2004) Enameled Cast Iron Plumbing Fixtures with Supplement 1-1998 and 
Supplement 2-2000 
ANSI/ASME 

A112.19.2-2003 Vitreous China Plumbing Fixtures and Hydraulic Performance 

Requirements for Toilets and Urinals 



3/11/05 248 CMR -102 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



10.06: continued 



Standard 

Reference 

Number 



Title 




ANSI/ASME . 

A112.19.3-(R2004) 

ANSI/ASME 

Al 12.19.4- 94 (R2004) 

ANSI/ASME 

A112. 19.7-95 
ANSI\ASME 

A112.19.8(RI996) 

ANSI\ASME 

A112.6.3-2001 
ANSI/ASME 

A 11 2. 6.4-2003 

ASSE 1010-2004 
ANSI/ASME 

A112.36.2-91 (R2002) 
ANSI/AWS 

A5.31 
ANSI/AWS 

A5.8 
ANSl/AW 

C3.4 
Z 21. 10. 1-98 

Z 21.10.3. -2001 

Z 21.22.86 -99 

Z124.1-95 
Z124.2-95 
Z124.3-95 
Z124.4-96 



Stainless Steel Plumbing Fixtures (Designed for Residential Use) with 
Supplement 1-2002 

Porcelain Enameled Formed Steel Plumbing Fixtures with Supplement 1- 
1999 and Supplement 2-2000 

Whirlpool Bathtub Appliances 

Suction Fittings for Use in Swinruning Pools, Wading Pools, Spas, Hot 
Tubs, and Whirlpool Bathtub Appliances 

Floor and Trench Drains 

Roof, Deck and Balcony Drains 

Performance Requirements for Water Hammer An-estors 

Cleanouts 

Fluxes, Brazing, and Braze Welding 

Filler Metals, Brazing, Braze Welding 

Torch Brazing 

Gas Water Heaters Volume I Storage Water Heaters with Input Ratings of 

75,000 BTU per Hour or Less 

Gas Water Heaters Volume HI Storage, with Input Ratings Above 75,000 

BTU per Hour, Circulating and Instantaneous Water Heaters 

Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply 

Systems 

Plastic Bathtub Units 

Plastic Shower Receptors and Shower Stalls 

Plastic Lavatories 

Plastic Toilets Bowls and Tanks 



3/11/05 



248 CMR -103 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 

ASME American Society of Mechanical Engineers 
Three Park Avenue 
New York, New York 1 00 1 6-5990 



Standard 

Reference 

Number 



Title 



ASME/ ANSI 

A112.6.1-97(R2002) 
ASME/ANSI 

A 11 2. 14.1 (R2003) 
ASME/ANSI 

A112.18. 1(2003) 
ASME/ANSI 

Al 12.19.1- 94 (R2004) 

ASME/ANSI 

Al 12. 19.2 (2003) 

ASME/ANSI 

A112.19.3(R2004) 

ASME/ANSI 

A112.19.4-94(R2004) 

ASME/ANSI 

A112.19.7-95 
ASME/ANSI 

A112.19.8(1996) 

ASME/ANSI 

A112.6.3-2001 
ASME/ANSI 

Al 12. 6.4-2003 
ASME/ANSI 

B 1.20.1 (R1999) 

B16.3-99 

B 16.4- 98 

B16.12-98 

B16.14-91 

B16.15(R1994) 

B16.18(R1994) 

B16.21-92 

B 16.22 (2001) 

316.23(2002) 

B16.28(1988) 

B 16.29 (2001) 

B16.39-98 
B 16.45-97 
B 16.50 (2001) 



Supports for Off-the-Floor Plumbing Fixtures for Public Use 

Backwater Valves 

Plumbing Fixture Fittings 

Enameled Cast Iron Plumbing Fixtures with Supplement 1 - 1998 and 
Supplement 2 - 2000 

Vitreous China Plumbing Fixtures and Hydraulic Performance 
Requirements for Toilets and Urinals 

Stainless Steel Plumbing Fixtures (Designed for Residential Use) with 
Supplement 1 - 2002 

Porcelain Enameled Formed Steel Plumbing Fixtures with Supplement 1- 
1999 ann Supplement 2 - 2000 

Whirlpool Bathtub Appliances 

Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, Hot 
Tubs, and Whirlpool Bathtub Appliances 

Floor and Trench Drains 

Roof , Deck and Balcony Drains 

Pipe Threads, General Purpose (inch) 

Malleable Iron Threaded Fittings 

Cast Iron Threaded Fittings 

Cast Iron Threaded Drainage Fittings 

Ferrous Pipe Plugs, Bushings, and Locknuts with pipe threads 

Cast Bronze Threaded Fittings 

Cast Copper Alloy Solder Joint Pressure Fittings 

Nonmetallic Flat Gaskets for Pipe Flanges 

Wrought Copper and Copper Alloy Solder Joint Pressure Fittings 

Cast Copper Alloy Solder Joint Drainage Fittings (DWV) 

Cast Copper Alloy Fittings for Flared Copper Tubes 

Wrought Copper and Wrought Copper Alloy Solder Joint Fittings for 

Drainage Fittings 

Malleable Iron Threaded Pipe Unions 

Cast Iron Fittings for Sovent Drainage Systems 

Wrought Copper and Copper Alloy Braze-joint Pressure Fittings 



3/1 1/05 



248 CMR - 104 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.06; continued 

ASSE American Society of Sanitary Engineering 

901 Canterbury Road, Suite A 
Westlake, OH 44145- 1480 



Standard 

Reference 

Number 



Title 



1001-2002 

1002- 99 
1003-2002 
1005- 99 

1006- 89R 

1007- 92 
1008- 89R 
1010- (2004) 
1011- (2004) 
1012-2002 

1013-99 

1014- (2004) 
1015-90 

1016- (2004) 

1017- 2003 

1018- 2001 
1019- (2004) 

1020- (2004) 
1021-2001 

1023-79 



Performance Requirements for Pipe Applied Atmospheric Type Vacuum 

Breakers 

Performance Requirements for Toilet Flush Tank Ball Cocks 

Performance Requirements for Water Pressure Reducing Valves 

Performance Requirements for Water Heater Drain Valves 

Performance Requirements for Residential Use (Household) Dishwashers 

Performance Requirements for Home Laundry Equipment 

Performance Requirements for Household Food Waste Disposer Units 

Performance Requirements for Water Hammer Arresters 

Performance Requirements for Hose Connection Vacuum Breakers 

Performance Requirements for Backflow Preventers with Intermediate 

Atmospheric Vent 

Performance Requirements for Reduced Pressure Principle Backflow 

Preventers 

Performance Requirements for Hand-held Showers 

Performance Requirements for Double Check Backflow Prevention 

Assembly 

Performance Requirements for Individual Thermostatic, Pressure Balancing 

and Combination Control Valves for Bathing Facilities 

Performance Requirements for Temperature Activated Mixing Valves for 

Primary Domestic Use 

Performance Requirements for Trap seal Primer Valves 

Performance Requirements for Wall Hydrants, Frost Resistant Automatic 

Draining, Types 

Performance Requirements for Pressure Vacuum Breaker Assembly 

Performance Requirements for Drain Air Gaps for Domestic Dishwasher 

Applications 

Plumbing Requirements forHot Water Dispensers Household Storage Type 

Electrical 



1037- 90 
1044-2001 



(covered in ASME Al 12.18.1) 

Performance Requirements for Pressurized Flushing Devices 

(Flushometers) for Plumbing Fixtures 

Performance Requirements for Trap Seal Primer Valves Drainage Type. 



3/11/05 



248 CMR - 105 



248 CMR: BOAJID OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 

ASTM International 

100 Barr Harbor Drive 

West Conshohocken, PA 19428-2959 



Standard 

Reference 

Number 



Title 



A53-2001 

A74- 98 
A3 12- 2001 

A377- 99 
B42-02el 
B43- 98el 
B88- 2003 
B302- 2002 
B306- 2002 
B370- 2003 
B8l3-2000el 

B819-00 
B 828-2002 

C12-86 
C14- 99 
C76- 2000 

C301-89 
C361-89 
C425- 2002 
C443- 2001 

C444-80 
C564- 97 
C700-2002 

D1330-85 
D1527- 99 

D1785-99 

D2 104- 2001 
D2235- 2001 

D2239- 2001 
D2241- 2000 
D2282-99 

D232 1-2000 

D2447-2001 

D2464- 99. 

D2466- 2001 



Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded 

and Steamless 

Specification for Cast Iron Soil Pipe and Fittings 

Standard Specification for Seamless and Welded Austeniiic Stainless Steel 

Pipes 

Index for Specifications for Ductile-Iron Pressure Pipe 

Specification for Seaniless Copper Pipe, Standard Sizes 

Specification for Seamless Red Brass Pipe, Standard Sizes 

Specifications for Seamless Copper Water Tube 

Specification for Threadless Copper Pipe 

Specification for Copper Drainage Tube (DWV) 

Standard Specification for Copper Sheet Strip for Building Construction 

Standard specification for liquid and paste fluxes for soldering of copper 

and copper alloy tube 

Standard Specification for Seamless Copper Tube for Medical Gas Systems 

Standard practice for making capillary joints by Soldering of copper and 

copper alloy tube and fittings 

Standard Practice for Installing Vitrified Clay Pipe Lines 

Specification for Concrete Sewer, Storm Drain, and Culvert Pipe 

Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer 

Pipe 

Standard Test Methods for Vitrified Clay Pipe 

Standard Specification for Reinforced Concrete Low-Head Pressure Pipe 

Specification for Compression Joints for Vitrified Clay Pipe and Fittings 

Specifications for Joints for Circular Concrete Sewer and Culvert Pipe, 

Using Rubber Gaskets 

Standard Specification for Perforated Concrete Pipe 

Specification for Rubber Gaskets for Cast Iron Soil Pipe and Fittings 

Specification for Vitrified Clay Pipe, Extra Strength, Standard Strength and 

Perforated 

Standard Specification for Rubber Sheet Gaskets 

Specification for Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe 

Schedules 40 and 80 

Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Schedules 40, 

80 and 120 

Standard Specification for Polyethylene (PE) Plastic Pipe, Schedule 40 

Specification for Solvent Cement for Acrylonitrile-Butadiene-Styrene 

(ABS) Plastic Pipe and Fittings 

Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) 

Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe (SDR-Series) 

Specification for Acrylontrile-Butadiene-Styrene (ABS) Plastic Pipe (SDR- 

PR) 

Standard Practice for Underground Installation of Flexible Thermoplastic 

Sewer Pipe 

Standard Specification for Polyethylene (PE) Plastic Pipe, Schedules 40 

and 80, Based on Outside Diameter 

Specification for Thi-eaded Poly (Vinyl Chloride) (PVS) Plastic Pipe 

Fittings, Schedule 80 

Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings 

Schedule 40 



3/11/05 



248 CMR - 106 




10.06: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Standard 

Reference 

Number 



Title 



D2467- 2001 

D2468- 96a 

D2564-96a 

D26G9- 2000 
D266 1-2001 

D2665- 2001 

D2672- 96a 

D2729- 96a 
D2737- 2001 
D2751-96a 

D2774-72 

D2846- 99 

D2852-89 . 

D2855- 96 

D2949-2000a 

D3034-2001 

D3 122-95 

D3 139-98 

D3212-96a 

D3261-88 

D33 11-94 

D4068-2001 

F402-98(R99) 

F405-98 
F409-2002 

F437-99 

F438-2001 

F439-2001 



Specification for Socket-type Poly (Vinyl Chloride) (PVC) Plastic Pipe 

Fittings, Schedule 80 

Specification for Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe 

Fittings, Schedule 40 

Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic 

Pipe and Fittings 

Specification for Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe 

Specifications for Aciylonitrile-Butadiene-Styrene (ABS) Schedule 40 

Plastic Drain, Waste, and Vent Pipe 

Specification for Poly (Vinyl Chloride) (PVC) Plastic Drain, Waste and 

Vent Pipe Fittings 

Specification for Solvent Cement Joint Sockets on Belled PVC Pressure 

Pipe 

Specification for Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings 

Specification for Polyethylene (PE) Plastic Tubing 

Specification for Acrylonitrile-Butadiene-Styrene (ABS) Sewer Pipe and 

Fittings 

Recommended Practice for Underground Installation of Thermoplastic 

Pressure Piping 

Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Hot 

and Cold Water Distribution Systems 

Standard Specification for Styrene-Rubber (SR) Plastic Drain Pipe and 

Fittings 

Standard Practice for Making Solvent-Cemented Joints with Poly Vinyl 

Chloride) (PVC) Pipe and Fittings 

Specification for 3.25-fo Outside Diameter Poly (Vinyl Chloride) (PVC) 

Plastic Drain, Waste, and Vent Pipe and Fittings 

Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and 

Fittings 

Standard Specification for Solvent Cements for Styrene-Rubber (SR) 

Plastic Pipe and Fittings 

Specification for Joints for Plastic Pressure Pipes Using Flexible 

Elastomeric Seals 

Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible 

Elastomeric Seals 

Standard Specification for Butt Heat Fusion Polyethlene (PE) Plastic 

Fittings for Polyethylene (PE) Plastic Pipe and Tubing discontinued 

Standard Specification for Drain, Waste, and Vent (DWV) Plastic Fittings 

Patterns 

Standard Specification for Chlorinated Polyethylene (CPE) Sheeting 

for Concealed Water Contairunent 

Recommended Practice for Safe Handling of Solvent Cements Used for 

Joining Thermoplastic Pipe and Fittings 

Specification for Corrugated Polyethylene (PE) Tubing and Fittings 

Specification for Thermoplastic Accessible and Replaceable Plastic Tube 

and Tubular Fittings 

Specification for Threaded Chlorinated Poly (Vinyl Chloride) (CPVC) 

Plastic Pipe Fittings, Schedule 80 

Specification for Socket Type Chlorinated Poly (Vinyl Chloride) (CPVC) 

Plastic Pipe Fittings, Schedule 40 

Specification for Socket Type Chlorinated Poly (Vinyl Chloride) (CPVC) 

Plastic Pipe Fittings. Schedule 80 



3/11/05 



248 CMR - 107 



10.06: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Standard 

Reference 

Number 



Title 



F441-99 

F442-99 

F493-97 

F628-2001 

F656-96a 

F789-95a 

F876-99A 
F877-99A 

F891-88A 

Fl 807-97 

F1960-99 



Specification for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, 

Schedules 40 and 80 

Specifications for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe 

(SDR-PR) 

Specifications for Solvent Cements for Chlorinated Poly (vinyl Chloride) 

(CPVC) Plastic Pipe and Fittings 

Specification for Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 

Plastic Drain, Waste, and Vent Pipe with a Cellular Core 

Specification for Primers for Use in Solvent Cement Joints of Poly (Vinyl 

Chloride) (PVC) Plastic Pipe and Fittings 

Standard Specification for Type PS-46 Poly (Vinyl Chloride) (PVC) Plastic 

Gravity Flow Sewer Pipe and Fittings 

Standard specifications for Cross-liniced polyethylene (PEX) tubing. 

Standard specifications for Cross-linked Polyethylene (PEX), plastic hot 

and cold water distribution systems. 

Specifications for co-extruded, (Polyvinyl Chloride), (PVC) plastic pipe 

with a cellular core. 

Standard specifications for metal insert fittings utilizing a copper crimp ring 

for SD9 Cross-linked Polyethylene (PEX) tubing. 

Standard specifications for cold expansion fittings with (PEX) reinforcing 

rings for use with Cross-linked Polyethylene (PEX) tubing. 



AWWA American Water Works Association 
6666 West Quincy Avenue 
Denver, CO 80235 



Standard 

Reference 

Number 



C110/A21. 10-98 

C 11 1/A2 1.11-2000 

C151/A21.51-96 

C203-91a 

C205-89 

C2 10-84 

C2 13-2001 

C303-87 

C606-97 



Title 



Ductile-Iron and Gray-Iron Fittings, 3 in. through 48 in., for Water and 

other Liquids 

Rtibber-Gasket Joints for Ductile-Iron and Gray-Iron Pressure Pipe and 

Fittings 

Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or Sand-Lined Molds, 

for Water or Other Liquids 

Coal-Tar Protective Coatings and Linings for Steel Water Pipelines Enamel 

and Tape- Hot Applied 

Cement-Mortar Protective Lining and Coating for Steel Water Pipe four 

inches and Larger - Shop Applied 

Liquid Epoxy Coating Systems for the Interior and Exterior of Steel Water 

Pipelines 

Standard for Fusion-Bonded Epoxy Coating for the Interior and Exterior of 

Steel Water Pipelines 

Reinforced Concrete Pressure Pipe, Steel Cylinder Type, Pretensioned, for 

Water and Other Liquids; Erratum 

Grooved and Shouldered Joints 



3/11/05 



248 CMR - 108 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 

CDA Copper Development Association Inc. 

260 Madison Avenue, 16* Floor 
New York, NY 100016 



Standard 

Reference 

Number 



Title 



Design Assistance Publication- 
409-80 



Copper Sovent Single Stack Plumbing System 



CIS PI Cast L-on Pipe Institute 

Suite 419 

5959 Shallowford Road 
Chattanooga, TN 37421 



Standard 

Reference 

Number 



Title 



301-2000 



Specification for Hubless Cast Iron Soil Pipe and Fittings for Sanitary and 
Storm Drain, Waste and Vent Piping Applications 



International Cast Polymer Alliance 
1010 North Glebe Road, Suite 450 
Ai-lington, VA 22201 



. Standard 
Reference 
Number 



Title 



LS-2-97 



Property and Performance Standard for Cast Polyester Lavatories 
(Note: includes cultured marble and onyx) 



FS Federal Specification that is available from the Supt. of Documents U.S. 

Government Printing Office Washington D.C. 20402-9325 
General Service Administration 
7th and D Streets 
Specification Section 
Room 6039 
Washington, DC 20407 



MSS Manufacturers Standardization Society of the Valve and Fitting Agency 

127 Park Street, NE 
Vienna, VA 22180 



Standard 

Reference 

Number 



Title 



SP-58-2002 
SP-69-03 
SP-70-84 
SP-71-84 

3/11/05 



Pipe Hangers and Supports-materials, Design and Manufacture 
Pipe Hangers and Supports-selection and Application 
Cast Iron Gate Valves, Flanges and Threaded Ends 
Cast lion Swing Check Valves, Flanged and Threaded Ends 

248 CMR -109 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 

NAMA National Automatic Merchandising Association 
20 N. Wacker Dr. 
Chicago, DL 60606-3 102 



Standard 

Reference 

Number 



Title 



Section 900-2001 



Standard for the Sanitary Design and Construction of Food and Beverage 
Vending Machines 



NSF International 

789 North Dixboro Road 

Ann Aitor, MI48104 



Standard 

Reference 

Number 



Title 



14-2003 
42-2002 
44-2002 
53-2002 
58-2002 
61-2003 



Plastics Piping Components and Related Materials 
Drinking Water Treatment Units-Aesthetics Effects 
Cation Exchange Water Softeners 
Drinking Water Treatment Units-Health Effects 
Reverse Osmosis Drinking Water Treatment Systems 
Drinking Water System Components - Health Effects 



PPFA Plastic Pipe and Fittings Association 

800 Roosevelt Road 
Building C, Suite 20 
Glen Ellyn.IL 60137 



UL Underwriters Laboratories Inc. 

333 Pfingsten Road 
Northbrook, IL 60062 



Standard 

Reference 

Number 



Title 



174-96 
399-93 
499-97 
732-95 
749-97 



Household Electric Storage Tank Water Heaters 
Drinking Water Coolers 
Electric Heating Appliances 
Oil-Fired Storage Tank Water Heaters 
Household Dishwashers 



3/11/05 



248 CMR -110 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.06: continued 

WQA Water Quality Association 

4151 Naperville Road 
Lisle, IL 60532 



Standard 

Reference 

Number 



Title 



SI 00-2000 
S200-2000 
S300-2000 
S400-2000 



Household Comn:\ercial and Portable Exchange Water Softeners 
Household and Commercial Water Filters 

Point-of-Use Low Pressure Reverse Osmosis Dnnking Water Systems 
Point-of-Use Distillation Drinking Water Systems 



TABLE 1 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERLU.S AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 




Ferrous Pipe. Fittings and Valves 
Cast Iron Aerators and De-Aerators 

ASME Hubless Fittings 
Cast Iron Drainage Fittings, Threaded 
Cast Iron Screwed Fittings (Threaded) 
Cast Iron Pipe (Threaded) DWV 
Cast Iron Pipe, Thickness Design of 
Cast Iron Soil Pipe and Fittings Hub & 

Spigot 
Cast Iron Water Pipe (2") 
Cast Iron Water Pipe (Cast in Meial 

Molds) 
Cast Iron Water Pipe (Cast in Sand-Lined 

Molds 
Cast Iron Water Pipe Fittings 
Dufitile-Iron Pipe 

Grove & Shoulder Type Joints (Split- 
Couplings) 
Cast Iron Soil Pipe and Fittings for 
Hubless Cast Iron Sanitary System 
Malleable Iron Screwed Fittings, 150 lbs. 
& 300 lbs. 

Nipples, Pipe, Threaded 
Pipe Fittings, Ferrous (Bushing, Plugs, and 
Locknuts) Threaded, 125 & 150 lb. 

Pipe Threads (except Dry Seal) 
Steel Pipe, Stainless 
Steel, Stainless, Water-DWV Tubes 
Steel Pipe, Welded or Seamless (for 
coiling) Black or Galvanized 



B 16.45-1987 


None 


None 


None 


B16.12-1998 


None 


WW-P-46B-I967 


None 


B 16.4-1998 


None 


WW-P-501d-1967 


None 


None 


None 


WW-P356a-1967 


None 


None 


None 


WW-P-421C-1967 


None 


None 


A74-98 


WW-P-401e-1974 


None 


None 


A377-99 


WW-P-360b-1968 


None 


None . 


A377-99 


WW-P-42IC-1967. 


None 


None 


A377-99 


WW-P-421C-1967 


None 


A2 1.1 0-1998 


A377.-99 


None 


*AWWAC110-98 


A21.51-1996 


A377-99 


WW-P-421C-1967 


*AWWAC151-96 


None 


None 


None 


*AWWA C606-97 


None 


None 


WW-P-104e-1974 


CISPI 301-2000 


B16.3-1985 


None 


WW-P-521f-1968 
WW-N-351b(l)- 


None 


None 


None 


1970 




B16,4-198 


None 


WW-P47b-1970 


None 


ASME 






NFS Handbook 


Bl.20.1-1992 


None 


None 


H28-Partn-1966 


None 


A3 12-200 la 


89 


None 


None 


None 


None 
WW-P-471b-1970 


None 


None 


A53-2001 


Int Amend 3-1971 


None 



NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/11/05 



248 CMR -111 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Steel Pipe, Welded or Seamless Black or 

Galvanized 
Steel Pipe (Cement-Mortar Lining and 
Reinforced Cement-Mortar (Coating) 
Steel Pipe (Coal Tar Enamel or Cement 

Coated and Wrapped) 
Unions, Pipe, Steel or Malleable Iron 
Valves, Ball 

Valves, Cast Iron, Gate 125 & 250 lb. 
Valves, Cast Iron, Swing Check 



None 


None 


None 


None 


B16.39-1986 


None 


None 


None 


None 


None 


None 


None 



WW- 

P-406d(])-l973 None 

SS-P-385a(l)-I968 AWWA C205-2000 

WW-P-1432-1970 *AWWAC203-91a 

WW-U-531C-1965 None 

WW-V-35a-I965 None 

WW-V-58b-197t MSS-SP-70-1984 

None MSS-SP 02-1997 



Non-FejTOus Metallic Pipe, Fittings and Valves 
* Aerator and De-aerator Copper Solder 

Joint Drainage Fittings 
Aluminum Pipe, Drainage DWV 
Brass Tube, Red, Seamless, Pipe, Standard 

Sizes 
Bronze Pipe Flanges and Flanged Fittings B 16.24-1979 
Cast Copper Alloy Fittings for Flared 

Copper Tubes 
Cast Copper Alloy Solder-joint Pressure 

Fittings 
Cast Copper Alloy Solder-joint Drainage 

Finings 
Copper Pipe, Seamless, Standard Sizes 
Copper Pipe, Thread less 
Copper Tube, Drainage DWV 
Copper Tube, Water, Seamless, Types K, 

L, and M 
Lead Pipes, Bends and Traps 
Pipe Fittings, Bronze, 125 and 250 Lbs. 

Cast 
Solder-joint Fittings, Pressure, Wrought 

Copper-copper and Copper AJloy 
Solder-joint Fittings, Drainage, DWV 

Wrought Copper and Copper Alloy 
Unions, Brass or Bronze, 250 lbs. 
Valves, Angle Check and Globe, Bronze, 

125 lb. Screwed, Flanged or Solder None 



None 


None 


None 


CDA-409-80 


None 


None 


None 


None 


None 


B43-98 


WW-P-351a-1963 


None 


B 16.24-1979 


None 


None 


None 


B 16.26-2002 


None 


None 


None 


B 16. 18-2001 


None 


WW-T-00725-1967 None 


B 16.23-2002 


None 


( 
None 


None 


None 


B42-98 


WW-P377d-1962 


None 


None 


B 302-2002 


WW-P-377d-1962 


None 


None 


B306-99 


None 


None 


None 


B88-99. 


WW-T-799d-1971 


NSF61 


None 


None 


WW-P-325a-1967 


None 


B16.15-1994 


None 


WW-P-460b-1967 


None 


B16.22-2001 


None 


WW-T-00725-1967 None 


B 16.29-2002 


None 


None 


None 


None 


None 


WW-V-35a-1965 


None 



None 



WW-V51d-l967 None 



Non-Metallic Pipe and Fitiines 
Clay Pipe, Perforated, Standard and Extra 
Strength None *C700-2002 SS-P-361E None 

NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approvesd by ANSI 



3/1 1/05 



248 CMR -112 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



None 
None 



None 



Concrete Low Head Pressure Pipe 

Reinforced 
Concrete Pipe, Perforated 
Concrete Pipe (Sewer, Storm Drain and 

Culvert) Non-reinforced 
Concrete Pipe, Pressure, Reinforced 

Concrete, Pretensioned Reinforcement None 
(Steel Cylinder Type) 
Concrete Pipe (Culvert, Storm Drain, and 

Sewer) Reinforced 
Acryloniirile-Butadiene-Styrene (ABS) 

Plastic Pipe, Schedules 40 and 80 



None 



None 



Acrylonitrile-Butadiene-Styrene (ABS) 
Plastic Pipe, (SDR-PR) 



None 



Socket-Type Acrylonitrile-Butadiene- 
Styrene (ABS) Plastic Pipe Fittings, 

Schedule 40 None 

Socket-type Acrylonitrile- Butadiene- 

Styrene (ABS) Plastic Pipe Fittings, 

.Schedule 80 None 

Threaded Acrylonitriie-Butadiene-Styrene 

(ABS) Plastic Pipe Fittings, Schedule 80 None 
Acrylonilrile-Butadiene-Styr6ne(ABS) 

Plastic Drain, Waste, and Vent Pipe None 



Acrylonitrile-Butadiene-Styrene (ABS) 
Plastic Drain, Waste & Vent Pipe 
Schedule 40 with Cellular Core None 



Acrylonitrile-Butadiene-Styrene (ABS) 
Sewer Pipe and fittings None 



C361 -2003a 


None .None 


♦C444-2003 


None None 


*C14-88 


SS-P-371e-1968 None 


None 


SS-P-381A(1)-1989 AWWA 




SS-P-381A(2)-1972 C303-37 



C76-89 



D 1527-99 



*D2282-99 



*D2468-96a 



None 



None 



*D2661-2001 



F628-200I 



D2751-96a 



SS-P-375d-]970 None 



None NSFI 



None 



None 



None 



None 



L-P-332B-1973 



None 



None 



See ASTM D2774for 
underground instal- 
lation procedure 

NSF14-2003 
See ASTM D2774 
for underground 
installation procedure 



NSFI 4-2003 



NSF 14-2003 

NSF 14-2003 

NSF 14-2003 
See ASTM. Appendix 
XI for installation 
procedures 



NSF 14-2003 
See ASTM Appendix 
Al for installation 
procedures 

NSF 14-2003 

See ASTM D2321 for 

underground 

installation procedures 



NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/1 1/05 



248 CMR -113 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Coniinued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Solvent Cement for Acrylonitrile- 
Butadiene-Styrene (ABS) Plastic 
Pipe and Fittings None 

Polyethylene (PE) Plastic Pipe, 
Schedule 40 None 



*D2235-2001 None 

*D2 104-2001 None 



NSF 14-2003 

NSF- 14-2003 

See ASTM D2774 for 

underground 

installation procedures 



Non-Metallic Pipe and Fittings 
Polyethylene (PE) Plastic Pipe, Schedules 
40 and 80 Based on Outside Diameter None 



Polyethylene (PE) Plastic Pipe, (SIDR-PR) 
Based on Controlled Inside Diameter None 



Butt Heat Fusion Polyethylene (PE) Plastic 

Fittings for Polyethylene (PE) Plastic 

Pipe and Tubing 
Butt Fusion Polyethylene (PE) Plastic 

Fittings, Schedule 40 
Butt Fusion Polyethylene (PE) Plastic Pipe 

Fittings, Schedule 80 
Plastic Insert Fittings for Polyethylene 

Plastic Pipe 
. Crosslinked Polyethylene (PEX) Tubing 
Crosslinked Polyethylene (PEX) Water 

Distribution Systems 
Metal Insert Fittings with Copper Crimp 

Rings for use with PEX Tubing 
Cold Expansion Fittings with PEX 

Reinforcing Rings for use with PEX 

Tubing 
Cold-expansion Fittings with Metal 

Compression Sleeves for use with PEX 

Tubing 
Stainless Steel Clamps for Securing SDR- 

9 PEX Tubing to Metal Insert Fittings 
Polyethylene (PE) Plastic Tubing 



NOTE: Standards on materials do 
service. Materials permitted for a 
248 CMR. 



D2447-2001 None NSFl 4-2003 

See ASTM D274 for 
.underground 
installation procedure 

*D2239-2001 L-P315c-I972 NSF 14-2003 

L-P-3 1 5c2- 1 975 See ASTM D2774 for 
underground 
installation procedures 



None 


D326 1-2003 


None 


None 


None 


None 


None 


NSF 14-2003 


None 


None 


None 


NSF 14-2003 


None 


D2609-2000 


L-F-00 1546- 1968 


NSF 14-2003 


None 


F876-99 


None 


NSF 14/61 


None 


F877-99 


None 


NSF 14/61 


None 


Fl 807-97 


None 


NSF14/61 


None 


Fl 960-99 


None 


NSFl 4/61 


None 


F2080 


None 


NSF 14/61 


None 


F2098 


None 


NSF 14/61 


None 


D2737-2001 


None 


NSF 14-2003 



See ASTM D2774 For 
underground 
installation procedures 

not imply that these materials may be used for a specific 
specific service shall be specified under the various sections of 



NOTE: * A standard also listed or approved by ANSI. 



3/11/05 



248 CMR -114 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Chlorinated Poly (Vinyl Chloride) (CPVC) 
Plastic Hot- and Cold-Water Distribution 
System None 



Socket-Type Chlorinated Poly Vinyl 
Chloride (CPVC) Plastic Pipe Fittings) 
Schedule 40 None 

Socket-Type Chlorinated Poly Vinyl 
Chloride (CPVC) Plastic Pipe Fittings, 
Schedule 80 None 



D2846-99 None 



■F438-2001 None 



F439-2001 None 



NSF 14-2003 
See ASTM Appendix 
X2 for Installation 
procedures 



NSF 14-2003 



NSF 14-2003 



Non-Metallic Pipe and Fittings . 
Poly (Vinyl Chloride) (PVC) Plastic Pipe, 
Schedules 40, 80 and 120 



None 



Making Solvent-Cemented Joints with 
•Poly (Vinyl Chloride) (PVC) Pipe and 
Fittings 

Poly (Vinyl Chloride) (PVC) Plastic Pipe 
(SDR-Series) 



None 



None 



Chlorinated Poly (Vinyl Chloride) (CPVC) 
Piastic Pipe (SDR-PR) None 

Chlorinated Poly (Vinyl Chloride) (CPVC) 
Plastic Pipe, Schedules 40 and 80 None 

Coextruded Poly (Vinyl Chloride) (PVC) 
Plastic Pipe with a Cellular Core None 



Solvent Cements for Chlorinated Poly 
(Vinyl Chloride) (CPVC) Plastic Pipe 
and Fittings None 



*D1785-99 



D2855-96 



D224 1-2000 



F442-99 



F441-99 



F89 1-2000 



F493-97 



L-P-1035A-1974 



None 



None 



None 



None 



NSF 14-2003 
See ASTM D2774 for 
underground instal- 
lation procedures. See 
ASTM D2855 
Section 4.2.14 



None 

NSF 14-2003 
See ASTM D2774 for 
underground installa- 
tion Procedures. See 
Section 4.2.14 

None 

NSF 14-2003 
See ASTM D2846 



See ASTM 
Appendixes XI, X2 
X3 for Storage, 
Joining and Instal- 
lation Procedures. 



NSF 14-2003 



None 



None 



NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/1 1/05 



248 CMR -115 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Socket-Type Polyvinyl Chloride (PVC) 
Plastic Pipe Fittings, Schedule 40 None 



Socket-Type Polyvinyl Chloride (PVC) 
Plastic Pipe Finings, Schedule 80 None 



Solvent Cements for Poly (Vinyl Chloride) 
(PVC) Plastic Pipe and Fittings None 



Primers for Solvent Cement Joints (PVC) F656-96a 
Threaded Chlorinated Poly Vinyl Chloride 
(CPVC) Plastic Pipe Fittings, Schedule 
80 None 

Threaded Polyvinyl Chloride (PVC) 
Plastic Pipe Fittings, Schedule 80 None 

Joints for IPS PVC Pipe Using Solvent 
Cement None 



*D2466-2001 


None 


NSF 14-2003 
See ASTM D2855. 
5ee Section 4.2.14 


*D2467-99 


None 


NSF 14-2003 
See ASTM D2855. 
i'ee Section 4.2. 14 


'D2564-96a 


None 


NSF 14-2003 
See ASTM D2855 
See Section 4.2.14 


None 


None 


None 


F437-99 


None 


NSF 14-2003 


*D2464-99 


None 


NSF 14-2003 


*D2672-96a 


None- 


NSF 14-2003 
See ASTM D2774 for 
underground installa- 
tion Procedures 
See ASTM D2855 
5ee Section 4.2. 14 



Non-Metallic Pipe and Fittings 

Poly (Vinyl Chloride) (PVC) Plastic Drain 

Waste And Vent Pipe and Fittings None 

Drain, Waste, and Vent (DWV) Plastic 

Fittings Patterns None 

Type PSM Poly (Vinyl Chloride) (PVC) 

Sewer Pipe and Fittings None 



Type PS-46 Poly (Vinyl Chloride) (PVC) 
Plastic Gravity Flow Sewer Pipe and 
Fittings None 



Underground Installation of Flexible 
Thermoplastic Sewer Pipe 



None 



*D2665-2000 


L-P-320a-l966 


NSF 14 


D3311-94 


None 


None 


D3034-2001 


None 


D2321-74e 
See ASTM for under- 
ground installation 
procedures. 
See ASTM D2855. 
5ee Section 4.2.14 


F789-95a 


None 


None 

5ec ASTM D2855. 

5e(? Section 4.2.14 


D232 1-2000 


None 


None 

. See ASTM D2855 
5ee Section 4.2.14 



NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: ♦ A standard also listed or approved by ANSI. 



3/11/05 



248 CMR- 116 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Styrene-Rubber (SR) Plastic Drain None 



Solvent Cements for Styrene-Rubber (SR) 
Plastic Pipe and Fittings None 

3.25-In. Outside Diameter Poly (Vinyl 
Chloride) (PVC) Plastic Drain, Waste, 
Vent Pipe and Fittings None 

Thermoplastic Accessible & Replaceable 
Plastic Tube & Tubular Fittings None 

Poly (Vinyl Chloride) (PVC) Sewer Pipe 
and Fittings None 

Corrugated Polyethylene (PE) Tubing and 
Fittings None 



*D2852-2002 None 



See ASTM D2321 for 
Pipe and Fittings 
underground installa- 
tion procedures 



*D3 122-95 


None 


None 


D2949-2000a 


None 


NSF14 


F409-99a 


None 


None 


D2729-96a 


None 


None 


F405-98 


None 


None 



Pipe Jointing Materials and Gaskets, and Supports 
Caulking, Lead Wool and Lead Pig 

Compression Joints and Vitrified None 

Clay Bell and Spigot Pipe None 
Joints for Plastic Pressure Pipes Using 

Flexible Elastomeric Seals None 
Joints for Drain and Sewer Plastic Pipes 

Using Flexible Elastomeric Seals None 

Fixture Setting Compound None 



None 


QQ-C-4G(2)1970 


None 


*C425-2002 


None 


None 


*D3 139-98 


None 


None 


*D3212-96a 


None 


None 


None 


Tr-P-00i536 
(1968) Revision of 
HHC536a-l954 


None 



Pipe Jointing Materials and Gaskets, and Supports 
Non-Metallic Gaskets for Pipe Flanges None 



None 



None 



ASMEB 16.21-92 



Neoprene Rubber Gaskets for Hub Spigot 

Cast Iron Soil-Pipe and Fittings None 

Pipe Hangers and Supports None 

Rubber Gaskets for Cast Iron Soil-Pipe 

and Fittings None 

Rubber Gasket Joints for Cast Iron 

Pressure Pipe and Fittings A2 1 . 1 1 -2000 

Rubber Gaskets, Molded or Extruded, for 

Concrete Non Pressure Sewer Pipe None 

Rubber Gaskets, Sheet None 

Sealing Compound, Preformed Plastic, for 

Expansion Joints and Pipe Joints None 

Sealing Compound, Sewer, Bituminous, 

Two-Component, Mineral-Filled Cold 

Applied None 



C564-97 
None 

C564-97 

None 

*C443-200I 
D- 1330-2002 

None 



None 



None 
WW-H-171d-1970 

None 

None 

HH-G-160B-1968 
None 



None 
*MSS-SP-58-83 

None 

*AWWAClll-'2000 

None 
None 



SS-S-00210:(1965) None 



SS-S- 168(2) 1962 None 



NOTE; Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/11/05 



248 CMR -117 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Plumbing Appliances 

Dishwashing Machines, Household None 

Drinking Water Coolers, self-Contained, 
Mechanical Refrigerated None 

Food Waste Disposer Units, Household None 



Home Laundry Equipment 



None 



**Water Heaters, Automatic Storage Type Z2 1.1 0.1 a- 1998 
**Water Heaters, Circulating Tank . Z21.l0.3a-1998 

** Water Heater, Electric storage Tank None 
**Water Heater, Oil Fired Storage Type None 
**Water Heater, Side Arm Type Z21. 10. 1-1998 



None 


None 


*UL 749-1997 
ASSE-1006-1989 


None 


None 


*UL399-2002 
*YK439-78 


None 


QQ-G-001513- 


*YK439-78 




1968 


ASSE 1008-1989 


None 


None 


*UL 560-1986 
ASSE 1007-1992 


None 


None 


None 


None 


None 


None 


None 


W-H-196j0)1971 


*UL 174-1996 


None 


None 


*UL 732-1997 


None 


None 


None 



Plumbing Fixtures and Appurtenances 
Accessories (Land Use) 



None 



None 



An2.19.1M.1999 None 
Zl 24. 1.1 995 
AI12.18.1M-2003 None 



Bathtubs 

Plastic 

Fittings, Plumbing fixtures 

Hand Held Showers, Performance 

Requirements None None 

Hydraulic Requirements for Water Closet 

and Urinals A112-19.6-1995 None 

Individual Shower Control Valves, Anti- 
Scald Type None None 
Lavatories None None 
Lavatory, Cultured Marble Z124.3-1995 None 
Lavatories, Plastic Z124.3-1995 None 
Plumbing Fixtures, General Specification None • None 
Plumbing Fixtures, Enameled Cast Iron Al 12. 19.1 M- 1999 None 
With Supplement 1-1998 and Supplement 2 - 2000 



Plumbing Fixtures, Stainless Steel 



Al 12.19.32000 None 



None 

None 

None 

None 

None 
None 

None 

None 

None 



None 



None 



*ASSE 1014-1990 

None 

*ASSE 1016-1996 

None 

CMI LS-2 

None 



With Supplement 1 
2002 



Plumbing Fixtures, Vitreous China Al 12.19.2-1998 None 

With Supplement 1 - 2002 

Plumbing Fixtures, Enameled Steel A112.19.4M-1994 None None 

With Supplement 1 -1999 and Supplement 2 2000 

Pressurized Hushing Devices Plumbing 

Fixtures (Flushometers) None None None ASSE 1037-1990 

Shower Baths and Heads and Water 

Control Valves Al 12,18.12003 None None 

NOTE; Standards on materials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 

** All Water Heaters must comply with M.G.L. c. 142 



3/11/05 



248 CMR -118 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



ASTM 



FS 



OTHER 



Plastic Shower Receptors and Shower 
Stalls 

Sinks, Kitchen and Service, and Laundry 

• Tub 

Supports for off-the-floor Plumbing 
Fixtures for Public Use 

Thermostatic Mixing Valves, Self- 
Actuated for Primary Domestic Use 

Urinals 

Toilets (Vitreous China Plumbing 
Fixtures) (1.6 GPF Max.) 

Plastic Toilet Bowls & Tanks (1.6 GPF 
Max.) 

Whirlpool Bathtub Appliances Suction 
Fittings for use in Whirlpool 

Bathtub Appliances 



Z124.2-1995 None None 

A112. 19.2 2002 None None 

Al 12.19.3--2000 With Supplement 1-2002 



None 



A 112.6.1-2002 


None 


None 


None 


None 


None 


None 


*ASSE 1017-2003 


None 




None 


All 2. 19.2 2003 


Al 12.19.2 2003 


None 


None 




Zl 24.4- 1996 


None 


None 


None 


Al 12.19.7-1995 


None 


None 


None 


A112.19.8-1996 


None 


None 


None 



Backflow Preventers 

Air Gap S tandards A 11 2. 1 .2-2002 

Air Gap Drains for Domestic Dishwashers None 
Vacuum Breakers, Anti-Siphon None 

Vacuum Breakers, Hose Connection None 

Double Check with Intermediate 

Atrriospheric Vent None 

Reduced Pressure Principle Backflow 

Preventer None 

Double Check Valve, Back Pressure, 

Backflow Assembly None 

Wall Hydrants, Freezeless, Automatic 

Draining, Anti-Backflow Type None 

Vacuum Breakers, Pressure Type None 

Diverters for Plumbing Faucets with Hose 

Spray Anti-Siphon Type, Residential 

Application None 



None 
None 
None 
None 

None 

None 

None 

None 
None 

None 



None 
None 
None 
None 

None 

None 

None 

None 
None 

None 



None 

ASSE 1021-2002 
ASSE 1001-2002 
*ASSE 1011-1993 

ASSE 1012-2002 

ASSE 1013-1999 

ASSE 1015-1999 

*ASSE 1019-1999 
ASSE 1020-1994 



ASMEAH2.18,1- 
2003 



Miscellaneous and Installation Standards 
Arrestors, Water Haiiuner None 

Toilet, Flush Tank, Fill Valves (Ballcocks) None 
Enamel, Coal-Tar (Protective Coating) None 



Chlorinated Polyethylene (CPE) Sheeting 
for Concealed Water Containment 
Membrane 



None 



None 
None 
None 



D4068-2001 



None 
None 



Norie 



ASSE 1010-1982 
*ASSE 1002-1999 
*AWWAC203-91a 
*A WW A C2 10-2003 



None 



NOTE: Standards on ntaterials do not imply that these materials may be used for a specific 
service. Materials permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/11/05 



248 CMR -119 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 


ANSI 


ASTM 


FS 


OTHER 


Clamps, hose 


None 


None 


WW-C-440B(a)- 
1969 


None 


Coating, Pipe, Epoxy, Fusion Bond 


None 


None 


None 


* AWW A C2 13-2001 


Coating, Pipe, Tiiermoplastic Resin or 










Thermosening, Epoxy 


None 


None 


L-C-530B-1970 


None 


Connector, Water, Flexible Copper 


None 


None 


None 


lAPMO PS- 14-99 


Copper, Sheet and Strip for Building 










Construction 


None 


B370-98 


None 


None 


Clay Pipe, Installation 


None 


*C1 2-2003 


None 


None 


Clay Pipe, Testing 


None 


*C301-98- 


None 


None 


Cross-linked Polyethylene tubing 


None 


None 


None 


NSF 14 and 61 


Drain, Floor 


Al 12.6.3-2001 


None 


None 


None 


Drain for Prefabricated and Precast 










Showers 


None 


None 


None 


L^PMO PS-4-2000 


Drain, Roof 


A 11 2.6.4-2003 


None 


None 


None 


Flux 


None 


B8l3-2000el 


None 


None 


Lead, Sheet, Grade A 


None 


None 


QQ-L-201f(2)1970 


None 


Plugs, Metallic Cleanout 


A1I2.36.2-2002 


None 


None 


None 


Relief Valves 


Z2I.22-1999 


None 


None 


None 


Recommended Practice for Making 










Solvent Cemented Joints with Polyvinyl 










Chloride (PVC) Plastic Pipe and Finings None 


♦D2855-96 


None 


None 


■Reducing Valves, Water Pressure for 


None 


None 


None 


ASSE 1003-2002 


Safe Handling of Solvent Cements Used 










for Joining Thermoplastic Pipe and 










Fittings Solder, Soft 


None 


F402-99 


None 


None 


Shower Pan Liner 


A] 18.10-93 


None 


None 


None 


Tape, Pipe Coating, Pressure Sensitive 










Polyethylene 


None 


None 


L-T-0075(l)-1966 


None 


Tee, Diversion and Twin Waste Elbow 


None 


None 


None 


L\PMO PS-9-84 


Thermoplastic Accessible and Replaceable 








Plastic Tube and Tubular Finings 


None 


*F409-200. 


None 


NSF 14-2003 


Underground Installation of Flexible 










Thermoplastic Sewer Pipe 


None 


*D232 1-2000 


None 


None 


Underground Installation of 










Thermoplastic Pressure Piping 


None 


*D2774-2001 


None 


None 


Trap Seal Primer Valves, Water 










Distribution Type 


None 


None 


None 


ASSE 1018-2001 


Drainage Type 


None 


None 


None 


ASSE 1044-2001 


Valve, Backwater 


A112.I4.1-1975 


None 


None 


lAPMO PS-8-77 


Valve, Drain, Water eater 


None 


None 


None 


ASSE 1005-1999 


Water Treatment Devices 










Activated Carbon Filter 


None 


None 


None 


WQAS200-2000 
NSF 42-2002 
NSF 53-2002 




NOTE: Standards on materials do not imply that these materials may be used for a specific 
service. Materids permitted for a specific service shall be specified under the various sections of 
248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 



3/1 1/05 



248 CMR - 120 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



TABLE 1 (Continued) 
STANDARDS FOR PRODUCT- APPROVED PLUMBING MATERIALS AND EQUIPMENT 



Description 



ANSI 



Reverse Osmosis 



Distiller 



Water Filter 



Water Softener 



Water Vending Machine 



None 



None 



None 



None 



None 



ASTM 



FS 



None 



None 



None 



None 



None 



None 



None 



None 



None 



None 



OTHER 



WQA S300-2000 
NSF 58-2002 
WQA S400-2000 
NSF 42-2002 
NSF 53-2002 
WQA S200-2000 
NSF 42-2002 
NSF 53-2002 
WQA SI 00-2000 
NSF 44-2002 
NAMA Section 
900-2001 



NOTE:. Standards on materials do not imply that these materials may be used for 
a specific service. Materials permitted for a specific service shall be specified 
under the various sections of 248 CMR. 

NOTE: * A standard also listed or approved by ANSI. 




• 



(d) Identification . Materials shall be identified as provided in the standard to which they 
conform. 

(2) Allowable Materials . 

(a) When installing fittings or piping for renovations or alterations within an existing soil 
stack, waste stack, vent stack or drain, the fitting or piping shall be of the same material as 
the existing stack or drain and be compliant with a joining method outlined in 248 CMR 
10.07. Exception : In new residential construction cast iron pipe may be used exclusively 
with PVC for sound reduction. 

(b) Sheet Lead , shall meet the following requirements: 

1. For a safe pan the sheet lead shall not be less than four pounds per square foot. 

2. For vent terminal flashing the sheet lead shall not be less than three pounds per 
square foot. 

3. For bends or traps the sheet lead shall not have less than an Va inch wall thickness. 

(c) Sheet Copper . Sheet copper shall not be less than 12 ounces per square foot when used 
in the following applications: 

1 . safe pan; 

2. shower pan; 

3. flush tank linings; 

4. vent terminal flashing; or 

5. general use. 

(d) Floor Flanges . A floor flange used for a toilet or other similar fixture shall conform to 
the foUowing requirements. 

1 . If the flange is composed of brass, the flange shall have a minimum thickness of Va 
inch. 

2. If the flange is composed of cast iron the flange shall have a minimum thickness of 
Va inch, and the minimum caulking depth shall be two inches. 

3. If the flange is composed of hard lead, it shall weigh at least one pound nine ounces 
and be composed of lead alloy with not less than 7.75% antimony by weight. 

4. Copper and plastic flanges may be used. 

5. A plastic flange must meet current NSF Standards and shall be of the same material 
to which it connects. 



3/11/05 



248 CMR - 121 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



6. A flange shall be secured to the finished floor on which it sets by screwing or bolting 
and shall be connected to the specific piping by soldering, caulking or solvent welding 
as provided for in 248 CMR 10.07. 

(e) Cleanouts . Cleanout plugs shall meet the following requirements. 

1 . Shall be composed of brass or plastic. 

2. Shall meet the latest Standards. 

3. Shall have raised or countersunk square or hexagon heads. 

4. If a tripping hazard may exist, only a countersunk head shall be used. 

5. A plastic cleanout plug shall be of the same material to which it connects. 

(f) Building Drains flnside Building) . When the Sanitary Drain or Storm Drain is installed 
in a trench excavated to a uniform width and level and the trench will also encompasses the 
water service pipe, the drain piping shall be bell and spigot cast iron tarred soil pipe with lead 
and oakum joints. 

(g) Storm and Sanitai^ Below Ground . The followmg materials may be used for storm and 
sanitary piping that is located below ground level, except for materials .that are to .be used for 
Special Hazardous Wastes (for Special Hazardous Wastes, See 248 CMR 10.13). 

1. Extra heavy cast iron soil pipe and fittings, coated tar or asphaltum may be used 
provided that the joints are made with packed oakum and molten lead or resilient gaskets. 

2. Ii'on size brass or copper pipe with cast brass drainage fittings. 

3. Hai'd drawn type K or L copper tubing, with cast brass drainage pattern fittings. 

4. Copper alloy tubing "Heavy" weight conforming to ASTM Standard, color coded 
aqua and incised marked as "Heavy" with cast brass drainage pattern fittings. 

5. Grade H or SL copper coated stainless steel tubing conforming to ASTM Standard, 
made of Type 430 or Type 439 stainless steel, marked in conformance with 248 CMR 
10.06(2)(q); provided that the fittings are cast in the brass drainage pattern. 

6. ABS (Acrylonitrile-Butadiene-Styrene) Schedule 40 pipe and fittings as specified 
under 248 CMR 10.06(2)(p). 

7. PVC (Polyvinyl-Chloride) Schedule 40 pipe and fittings as specified under 248 CMR 
10.06(2)(o). 

8. Epoxy re-enforced fiberglass piping system may be used only for storm water 
drainage. 

9. Service weight cast iron soil pipe and fittings provided that the tarred or plain joints 
are made with packed oakum and molten lead or resilient gaskets. 

10. Hubless Cast Iron Soil Pipe and Fittings . 

a. Hubless cast iron soil pipe and fittings may be used if: 

i. they are manufactured in accordance with CISPI Standard 301-75; and 

ii. the following test requirements are satisfied: 

(i) Every manufacturer shall perform the pressure and leak test as required 
under 248 CMR 10.06(2)(v). 

(ii) Deflection Test . A test deflecting the free end of a ten-foot length of 
hubless cast iron soil pipe joined together with a coupling to a secured length 
of pipe. The test assembly shall be subjected to an internal hydrostatic 
pressure of ten P.S.I.G and a minimum deflection of one-inch per lineal foot 
and shall show no visible signs of leakage. 

(iii) Shear Test . The shear test requires the application of a uniformly 
distributed force or weight of 50 pounds-per-inch of nominal diameter of the 
pipe over an arc of 120°, along a longitudinal distance of 12 inches of the 
unsupported end of the two coupled lengths of pipe immediately adjacent to 
the assembled joint. The opposite end of the test assembly shall be rigidly 
secured and the entire unit shall be under an internal hydrostatic pressure of 
ten P.S.I.G. and shall show no visible signs of leakage, 
(iv) All tests shall be performed in the Commonwealth of Massachusetts and 
certified as per 248 CMR 10.06(2)(v)5. 

b. Installations . Installations of hubless systems underground shall conform to 
248 CMR 10.05(l)and (2)(a) through (d) and 10.06(l)(b). 

c. Trenching. Tunneling and Backfilling . Trenching, tunneling and backfilling 
procedures for hubless systems underground shall conform to 248 CMR 10.05(5)(a) 
through (d) and 10,06(2)(g)10.d. 



3/11/05 248 CMR -122 



• 



10.06: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



d. Hangers and Supports for hubless cast iron soil piping shall conform to the 
following requirements. 

i. General piping shall be installed with provisions for expansion, contraction 

or structural settlement. 

ii. Material Hangers, anchors and supports shall be composed of metal having 

sufficient strength to support the piping and its contents, except that piers may be 

composed of concrete or brick. 

iii. Attachments to Buildings or Structures . Hubless cast iron soil pipe shall be 

supported in accordance with the manufacturer's recommendations or as outlined 

in the most recent edition of the Cast Iron Soil Pipe Institute (CISPI) Handbook. 

iv. Base of Stacks . Bases of stacks shall be supported on concrete, brick laid in 

cement mortar or metal brackets attached to the building or stiucture. 

V. Hubless Fittings . 

(i) There shall be a hanger installed at each change of direction. 

(ii) When joining three or more fittings, there shall be a minimum of one 

hanger for every three-feet or part thereof, 
vi. Backfilling . The on-site Ucensed plumber or the holder of the pennit for the 
underground hubless cast iron soil piping system shall notify the Inspector when 
the installation is to be backfilled. A licensed plumber shall be present during the 
backfilling procedure including when ail concrete slabs are being poured. This 
notification provision shall not be subject to the 48 hour notice requirement of 
248 CMR 3.05(3)(b). 

11. Ductile pipe and approved compatible drainage fittings. 

12. For Limited Use Only: Schedule 40 PVC, See 248 CMR 10.06(2)(o). 



3/11/05 248 CMR -123 



n 



to 



SHEAR TEST 




paii9>j«( »« 



no^^^: 



PROCEDURE: A force of 50 pounds per inch of nominal 
diameter of pipe per 12 inch longitudinal distance was 
applied over an arc of 120° and along the longitudinal 
dimension of the unsupported end of the two coupled 
lengths of pipe. The other end of the test assembly was 
rigidly secured. A Unite-O-Matic Universal Tester, with a 
load cell and a recorder, was used to apply the load. The 
load was held for one hour, the test assembly was 
subjected to an internal hydrostatic pressure of /tf PSI 
during the lest. The maximum deflection of the coupling 
joining the two pieces of pipe was also noted. 



RESULTS: 



1 W coupling 
'2" coupling 
3" coupling 
4" coupling 
5" coupling 
6" coupling 
8" coupling 
10" coupling 



Maximum 
Coupling 
Deflection 



no leakage 
no leakage 
no leakage 
no leakage 
no leakage 
no leakage 
no leakage 
no leakage 



DEFLECTION TEST 



f I* f D PI"! 



count, «6 .icTIOH 




f -^"ctii f I. OP r\n 



PROCEDURE; the free end of the {o^. length of pipe was 
deflected /" p6r foot of pipe length, while the length 
of pipe, on the other side of the coupling, was secured. 
The test assembly was subjected to an internal hydro- 
static pressure of i PPSI during the test. 

RESULTS: 



1 Vi" coupling 
2" coupling 
3" coupling 
4" coupling 
5" coupling 
•6" coupling 
8" coupling 
10" coupling 



no leakage was noted 
no leakage was noted 
no leakage was noted 
no leakage was noted 
no, leakage was noted 
no leakage was noted 
no leakage was noted 
no leakage was noted 



r 



o 
b 

0\ 



n 



o 



C/3 CTl 

q X 

H > 

si 

tn 

CO 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



• 



10.06: continued 



(h) Storm and Sanitary Above Ground . The following materials may be used for storm and 
sanitary piping that is located above ground level, except the following materials shall not 
be to be used for Special Hazardous Wastes (for Special Hazardous Wastes, See 248 CMR 
10.13). 

1. Extra heavy cast iron soil pipe and fittings, tarred or plain provided that joints are 
made with packed oakum and molten lead or resilient gaskets. 

2. Service weight cast iron soil pipe and fittings provided that tarred or plain joints are 
made with packed oakum and molten lead or resilient gaskets. 

3. Hubless cast iron soil pipe and fittings that are manufactured in accordance with 
CISPI Standard 301-75, and joined with a product approved clamp. 

4. Iron size brass or copper pipe with cast brass drainage fittings. 

5. Hard drawn Type K, L, M or DWV copper tubing having cast brass or wrought 
copper drainage pattern fittings; 

6. Copper alloy tubing "Heavy" and "Standard" weights conforming to ASTM Standard, 
color coded aqua and incised marked as either "Heavy" or "Standard" having cast brass 
or wrought copper drainage pattem fitting. 

7. Grades H, G, SL or SM copper coated stainless steel tubing conforming to ASTM 
Standard, manufacmred of Type 430 or Type 439 stainless steel that are plainly marked 
in conformance with 248 CMR 1 0.06(2)(q) and provided that the relevant fittings are cast 
in a brass or wrought copper drainage pattem. 

8. Schedule 40 galvanized wrought iron or galvanized steel pipe provided that for sizes 
greater than two inches it has a plain or galvanized drainage pattem fittings. 

9. Schedule 40 galvanized wrought iron or galvanized steel pipe for cases when pipe 
and fittings are end grooved and are to be joined with an approved split and bolted 
galvanized steel coupling with gasket; 

10. Groove type couplings and fittings for applications that join storm water piping. 

1 1 . ABS (Acrylonitrile-Butadiene-Styrene) Schedule 40 pipe and fittings as specified 
under 248 CMR 10.06(2)(p). 

12. PVC (Polyvinyl-Chloride) Schedule 40 pipe and fittings as specified under 
248 CMR 10.06(2)(o). 

13. For Storm Water Drainage Only . Approved epoxy re-enforced fiberglass piping 
system. 

14. Aluminum DWV pipe with pipe end cap protectors manufactured and installed with 
hubless cast iron fittings manufactured according to CISPI Standard 301 and joined with 
a Product-approved stainless steel no hub pipe clamp and elastomeric sealing sleeve. 

15. Ductile pipe and approved compatible drainage fittings. 

(i) Vent Pipe and Fittings Below Ground . All materials listed under 248 CMR 
10.06(2)(g)l. through 10.06(2)(g)ll may be used. 

(j) Vent Pipe aqd Fittings Above Ground . For vent pipe and fitting above ground the 
following materials may be used. 

1. All materials listed under 248 CMR 10.06(2)(h)L through 10.06(2)(h)15. 

2. Galvanized wrought or galvanized steel pipe not lighter than schedule 40, with cast 
iron or malleable iron screw or grooved end fittings, plain or galvanized. 

(k) Water Service Piping (Outside Building) . The materials used shall be those specified 

by the local municipality. 

(1) Water Distribution Piping Below Ground Tlnside Building\ For water distribution piping 

that is installed inside a building and below ground, only the following materials may be 

used. 

1. Type K or L tubing incised marked with cast brass fittings. 

2. Copper alloy tubing "Heavy" weight conforming to ASTM Standard, color coded 
aqua and incised marked as "Heavy" with cast brass fittings. 

3. Copper core pre-insulated cement pressure pipe that is PVC coated. 

4. Any pipe, valve, pipe fitting, aerator, or faucet used in a potable water system shall 
comply with all applicable NSF-61 Standards. 

5. Cross-linked Polyethylene (PEX) tubing and fittings installed in accordance with 
248 CMR 10.06 and 248 CMR 10.08. 



10/5/07 (Effective 6/26/07) 248 CMR -125 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



(m) Water Distribution Piping Above Ground CInside Building) . For water distribution 
piping that is installed inside a building and above ground, only the following materials niay 
be used: 

1 . Iron size brass or copper pipe with cast brass fittings. 

2. Type K or L hard drawn copper tubing that is incised marked and has cast brass or 
wrought copper fittings. 

3. Copper alloy tubing "Heavy" and "Standard" weight incised marked, color coded 
aqua, conforming to ASTM Standard and having cast brass or wrought copper fittings, 

4. Exposed galvanized wrought iron or galvanized steel pipe and galvanized fittings 
only when used for replacement in existing buildings or structures or when used for 
replacement of large size water mains. 

5. CPVC (Chlorinated Polyvinyl Chloride) pipe and fittings may be used in the 
following situations provided that none of this material is located within 24 inches of any 
connection to a hot water tank as defined in M.G.L. c. 142, § 17: 

a. for hot and cold water distribution that is located only in the dwelling portion of 
a residential dwelling, multiple family dwelling, hotel, motel, inn, condominium and 
similar building six stories or 60 feet in height; or 

b. for the exclusive cold water supply distribution beginning at the outlet of the 
water meter (or the control valve inside a building) directly dedicated to a drinking 
water fountain(s) in state licensed or accredited school buildings only. 

6. Mechanically grooved pipe couplings and fittings when the following requirements 
are satisfied. 

a. The couplings and fittings are used with exposed galvanized wrought iron pipe 
or exposed galvanized steel pipe on water supply distribution systems provided that 
the water supply systems operating condition temperature will not exceed 130°R 

b. The coupling housings and fittings are cast of malleable galvanized iron as 
described in ASTM A-47 or all products that meet the requirements of ASTM A-269. 

c. The elastomeric gasket for the coupling has properties as designated by ASTM 
D-2000. 

7. Cross-linked Polvethvlene (PEX) Tubing and Fittings . 

a. PEX may be used for residential dwellings/ buildings if the installation conforms 
to the following requirements: 

i. The PEX tubing is used for hot and cold water distribution in residential 

dwelling/buildings up to and including three stories in height. 

ii. PEX tubing shall not be installed closer than 24-inches to any connection to 

a direct-fired water heater, tankless type hot water coil or heating boiler. 

iii. Mechanical compression type fittings shall not be concealed and must be 

accessible. 

iv. Fittings meet one of the ASTM, (standards for the fittings) listed in 

248 CMR 10.06: Table 1 unless otherwise Product-approved by the Board as 

provided for under 248 CMR. 3.04. 

v. PEX tubing and fittings shall be installed in accordance with the 

manufacturers recommendations and meet the U.L. flame spread requirements 

for return air plenums in commercial buildings in accordance with 

780 CMR: The Massachusetts State Building Code. 

b. PEX tubing and fittings shall be used in commercial buildings if the installation 
conforms to the following requirements: 

i. PEX tubing is used in a commercial building for the purpose of conveying 
reverse osmosis or other similar technology processes that produce ("purified 
water" 248 CMR 10.03), from the point of treatment to a point or multiple points 
of use for drinking water. 

ii, PEX tubing shall be installed at a point which, begins on the outlet side of a 
Product- Approved reverse osmosis, ("purified water") drinking water device and 
terminates at a point or multiple points of use e.g. Produpt-approved dispensers 
and faucets. 



3/11/05 248 CMR -126 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 




iii. PEX tubing and fittings are not to be used for steam flushing of water 
purification systems. Only type 316 stainless steel tube and fittings shall be used 
for this purpose. 

8. Polybutylene or polyethylene tanks when used for Storage Heaters and when the 
tanks have been reinforced with a Product- Approved material. 

9. 316 stainless steel tanks when used for storage heaters. 

10. Polybutylene, polyethylene, natural polypropylene. Type 1 Grade I polyvinyl 
chloride meeting ASTM standard D 1784 and D 1785, schedule 40 or 80 and cross- 
linked polyethylene shall be used for the purpose of conveying reverse osmosis purified 
water from a point of purification to a final point of use. 

1 1 . The use of a Product- Approved polypropylene homopolymer drain tube assembly 
that is designed to be vertically mounted in the downtumed outlet of a horizontally 
mounted relief valve provided that the capacity of the relief valve served by the approved 
drain assembly does not exceed 100,000 BTU per hour. 

12. Any pipe, valve, pipe fitting, aerator, or faucet used in a potable water system shall 
comply with all applicable NSF-61 standards. 

(n) Pipe. Fittings and Gaskets . Resilient gaskets specified for use with cast iron soil pipe 
shall be marked as follows. 

1. The exposed lip shall be marked clearly and legibly to include: 

a. Manufacturer's name and/or registered trade-mark; 

b. Neoprene; 

c. Date of manufacture; and 

d. ASTM standard. 

2. Gaskets for service weight cast iron soil pipe shall bear the letters "SV" on the 
exposed lip. 

3. Gaskets for extra heavy cast iron soil pipe shall bear the letters "XH" on the exposed 
lip. 

(o) PVC Plastic Pipe and Fittings . The following requirements apply to PVC plastic pipe 
and fittings. 

1. PVC shall not be used for drains, waste or vents in commercial kitchens, laundry 
rooms, public toilet facilities or other commercial areas located in assisted living 
facilities, hotels, motels, inns or similar establishments, except where provided for 
elsewhere in 248 CMR 10.06, Le. 248 CMR 10.06(2)(o)2. 

2. PVC, Schedule 40 Pipe and Fittings, may be used for the drains, waste and vent 
piping that serve the sanitary or storm drainage systems in the following buildings: 

a. residential dwellings; 

b. assisted living facilities; 

c. hotels; 

d. motels; 

e. inns; 

f. condominiums; and 

g. other residential buildings that are similar to 248 CMR 10.06(2)(o)2.a. through 
10.06(2)(o)2,f, and that are no greater than ten stories in height. 

3. Limited use of PVC for Commercial Buildings . PVC pipe and fittings may be 
installed for limited purposes in commercial buildings or establishments, provided that 
the following requirements are satisfied. 

a. PVC is used for the drains, waste, or vents when the piping serves only the 
fixtures that are necessary to accommodate waste generated as a direct result of the 
conduct of business that is particular to the type of commercial establishment 
itemized in 10.06(o)(3)b. 

b. PVC Schedule 40 may by used in the following buildings: 
i. beauty salons; 

ii. barbershops; 
iii. manicure salons; 
iv. pedicure salons; 
V. photo-labs; and 



10/5/07 (Effective 6/26/07) 248 CMR -127 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



vi. in commercial buildings that incorporate patron areas for tlie purpose of 
serving alcohol, soda or other similar carbonated type beverages where the 
carbonated liquid waste shall drain directly into a floor sink or floor drain, 
c. The PVC Schedule 40 shall be installed in compliance with the following: 
i. No PVC schedule 40 pipe and fittings may be used for the toilet fixtures and 
other plumbing connections in the building. 

ii. The piping shall be connected to a main drain or branch drain from other 
fixtures to provide a point of waste dilution. 

iii. A label shall be affixed at the point of dilution that reads "Limited Use 
Waste Drain" in one inch high lettering shall identify the piping, 
iv. The vent piping from the fixture discharging the waste shall extend to a point 
six inches above the flood rim of the fixture and then shall re-transition to cast 
iron or copper piping material as used throughout the rest of the commercial 
building. 

4. Use of PVC Schedule 40 for Dial vsis Equipment . Type 1 PVC pipe and fittings may 
be used as indirect waste piping for dialysis equipment in medical buildings, 

5. PVC Schedule 40 perforated pipe may be used for subsoil drainage in commercial 
buildings. 

6. Pipe and Fittings shall be manufactured from Type I, Polyvinyl Chloride (PVC) 
materials having a deflection temperature of 169°F under a load of 264 P.S.I.G. when 
tested in accordance with ASTM D-648. 

7. PVC materials shall be classified as self-extinguishing when tested in accordance 
with ASTM D-635 and have aflamespread rating of 0-25 when tested in accordance with 
ASTM E-84. 

8. PVC materials shall meet the requirements of ASTM, CS, and/or NSF Standards. 

9. At the request of the Board, the manufacturer of PVC pipe shall submit to the Board 
the results of tests conducted by an Approved-testing-lab in compliance with 248 CMR 
3.00. 

10. Identification of PVC Pipe . 

a. The pipe shall be in a light color such as beige, buff, grey, white, cream, and shall 
be marked in accordance with listed standards. 

b. The following Listed Standards shall appear on opposite sides of the pipe: 
Schedule 40, "Size", PVC, DWV-NSF stamp of approval, manufacturer's name and 
registered trademark. Type and Grade. 

11. Pipe and Fittings . 

a. Identification of Fittings . Fittings shall be in light color as for pipe and shall bear 
the following markings by molding on the body or hub: 

i. Manufacturer's name or registered trademai'k; 
ii. NSF-DWV stamp of approval; 
iii. PVCl;and 
iv, Size. 

b. Use PVC fittings ONLY with PVC pipe and ABS fittings ONLY with ABS. 
NEVER use PVC solvent weld on ABS pipe or ABS solvent weld on PVC pipe. 

12. Transition Fittings . Fittings used to connect PVC to other Product-approved 
materials shall meet the proper standard and comply with the requirements of 248 CMR 
3.04: 

13. Installation . The following installation requirements and procedures shall be 
followed when assembling PVC and ABS piping materials. 

a. Solvent Welded Joint . 

i. Clean joining surfaces of pipe and fitting with PVC primer. 

ii. With a natural bristle brush one inch or larger, apply a heavy coat of solvent 

cement to the pipe joining surface and then a light coat to the socket joining 

surface. 

iii. Immediately insert the pipe to the full socket depth while rotating the pipe 

fitting Va turn to insure even distribution of solvent cement. 

iv. Wipe excess solvent cement from the outside of the pipe at the shoulder of 

the fitting. 



3/11/05 248 CMR -128 




10.06: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



V. Do not tum pipe spigot in the socket while wiping. 

vi. If a fillet or bead of solvent cement is not visible after a joint is assembled, 

a heavier coat of solvent cement should be used on the pipe spigot. 

vii. The assembly can be handled with care within two minutes. 

vii. Do not attempt to adjust the joint after the solvent cement has set or damage 

will result. 

ix. Pipe and fittings conforming to these standards will normally have an 

interference fit, which maintains pressure between the joining s\irfaces during the 

solvent cementing process. Fittings that do not have an interference fit shall have 

not more than 0.009 inch clearance to produce strong watertight joints. 

X. (NOTE — CAUTION!) When using primers and solvents for plastics, 

plumbers and apprentices shall always follow directions carefully and be in a well 

veniilated ai'ea. 

xi. The solvent cement shall conform lo the requirements of ASTM D2564-67 

or CS 272-65 latest issue. The cleaner is a solvent that has a limited effect on 

PVC but will remove dirt and grease. The solvent cement shall be labeled with 

the NSF Seal of Approval. 

b. Threaded Joints fl.P.S.") . When threads are required or used for connecting 

PVC-DWV pipe to other materials: 

i. do not thread the pipe use proper PVC male or female threaded adapters for 

transitioning; 

ii. note that threaded joints in a PVC-DWV system are primarily used for trap 

connections and clean out plugs. 

14. Supports . 

a. Conventional pipe clamps, brackets or strapping that have a bearing width of % 
inch or more are suitable supports. 

b. Supports for horizontal runs of pipe IVi inches or less in diameter shall be at 
three-foot centers as a maximum. 

c. Supports for larger diameters shall have a maximum spacing at four-foot centers. 

d. Trap arms shall be supported at the trap discharge. 

e. Vertical pipes shall be supported at each story height but not more than ten-foot 
intervals and elsewhere as required to maintain alignment. 

f. All supports shall permit expansion and contraction of the pipe without binding. 

g. Horizontal piping shall be supported at each change of direction. 

15. Thermal Expansion . 

a. Thermal expansion of PVC pipe occurs at the rate of approximately % inch per 
ten feet length per 100°F temperature change. 

b. In a PVC-DWV system an expansion allowance of Vi inch per ten feet length of 
pipe is required. 

c. Expansion fittings utilize a rubber o-ring that shall be lubricated with grease, 
petroleum jelly or other water-resistant grease to facilitate assembly. 

d. Protect the operating end of the expansion fitting from grime. 

e. Expansion joints shall be provided at every other branch interval up to and 
including ten stories in height. 

f. The expansion fitting shall be installed in a accessible location in horizontal runs 
exceeding 20 feet in length. 

g. Expansion joints shall not be required underground. 

h. Expansion fittings shall be installed as designed in proper alignment with the 
piping being sei"ved. 

i. The expansion joint shall be set for the maximum expansion or contraction rate 
based on the installation temperature and manufacturer's recommendations. 

16. Roof Flashing . The piping that penetrates through the roof shall be made 
weather tight with an approved flashing. 

17. Lead Joints . 

a. The piping shall be connected to cast iron soil pipe hubs using oakum and no 
less than one-inch of molten lead. 



3/11/05 248 CMR -129 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



10.06: continued 



b. Caulk the joint along the inside and outside edges after it has cooled for four 
- minutes. 

18. Sleeving . 

a. The piping that penetrates concrete floors slabs or concrete walls shall be 
provided with sleeves. Maintain an annular space of one-inch between the pipe 
and sleeve. 

b. Pipes that penetrate concrete slabs placed on grade shall also provide a sleeve. 
Maintain an annular space of one-inch between the pipe and sleeve. 

19. Piping Trench Installations . 

a. Prepare a smooth, uniformly compacted trench bottom using sand. Place the 
pipe in uniform alignment and grade with a continuous bearing on the bottom 
quadrant of the pipe along its entire length. 

b. Using sand or other fine granular material, compact and backfill around the 
pipe to a point at least six-inches over the crown of the pipe. 

c. Do not allow large stones or pieces of earth to be dropped into the trench 
when completing the backfilling process. 

d. The requirements of the above four sentences shall be the responsibility of the 
on-site licensed plumber. 

20. Installation Through Fire-walls or Rated Fire Separation Walls . 

a. When piping passes through a rated fire separation wall or enclosure to 
another dwelling unit or space, the pipe shall be encased or shielded by a metal 
sleeve extended 20 inches on each side of the wall, floor or ceiling. The metal 
sleeve shall be 18 gauge (.040 in.) or heavier. 

b. The annular space between the metal sleeve and the piping shall be sealed 
with approved non-combustible fire retardant material installed in accordance 
with 780 CMR: The Massachusetts State Building Code. 

c. Alternate procedures and devices for fire-stopping may be used if installed in 
accordance with 780 CMR: The Massachusetts State Building Code. 

d. The piping connections that penetrate fire-walls and ceilings in one and two 
family passenger car garages located beneath dwelling units are exempt and are 
not required to be encased. 

e. The pipe penetrations should be sufficiently sealed by means of caulking or 
other approved materials to prevent the passage of smoke from space to space. 

(p) ABS Plastic Pipe and Fittings . The following requirements apply to ABS plastic pipe 
and fittings: 

1 . ABS shall not be used for drains, waste, or vents in the commercial kitchens, laundry 
rooms, public restrooms or other commercial areas located in assisted living facilities, 
hotels, motels, inns and similar establishments except where provided for elsewhere in 
248 CMR 10.06, i.e. 248 CMR 10.06(2){p). 

2. ABS -DWV (Acrylonitrile -Butadiene - Styrene) Schedule 40 Pipe and Fittings, may 
be used only for the drains, waste and vent piping that serve the sanitary or storm 
drainage systems in the following buildings: 

a. residential dwellings; 

b. assisted living facilities: 

c. hotels; 

d. motels; 

e. inns; 

f. condominiums; and 

g. other residential buildings that are similar to 248 CMR 10.06(2)(p)2.a. through 
10.06(2)(p)2.f. and that are no greater than ten stories in height. 

3. Limited use of ABS for Commercial Buildings : ABS pipe and fittings may be 
installed for limited purposes in connmercial buildings or establishments, provided that 
the following requirements are satisfied. 



3/11/05 248 CMR -130 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.06: continued 




a. ABS is used for the drains, waste, or vents when the piping serves only the 
fixtures that are necessary to accommodate waste generated as a direct result of the 
conducts of business that is particular to the type of commercial establishment as 
itemized in 10.06(2)(p)3.b. 

b. ABS may be used in the following buildings: 
i. beauty salons; 

ii. barber shops; 

iii. manicure salons; 

iv. pedicure salons; 

V. photo-labs; and 

vi. in commercial buildings that incorporate patron areas for the purpose of 

serving alcohol, soda or other similar carbonated type beverages where the 

carbonated liquid waste shall drain directly into a floor sink or floor drain. 

c. The ABS Schedule 40 shall be installed in compliance with the following: 

i. No ABS schedule 40 pipe and fittings may be used for the toilet fixtures and 

other plumbing connections in the establishment. 

ii. The piping shall be connected to a main drain or drain from other fixtures to 

provide a point of waste dilution. 

iii. A label at the point of dilution that reads "Limited Use Waste Drain" in one 

inch high lettering shall identify the piping. 

iv. The vent piping from the fixture discharging limited use waste shall extend 

to a point six inches above the flood rim of the fixture and then shall transition 

back to compliant material in a commercial building. 

4. Installation . ABS-DWV pipe and fittings shall be installed 

a. using the same methods and requirements as stated in: 
i. 248 CMR 10.06(2)(o)13.a.ii. through X.; 

ii. 248 CMR 10.06(2)(o)12.; and 

iii. 248 CMR 10.06(2)(o)14. through 18. 

b. In addition, the following requirements shall be satisfied: 

i. For solvent welded joints clean joining surfaces of pipe and fittings shall be 

made with an ABS primer. 

ii. Expansion joints are not required. 

iii. An ABS solvent that is recommended by the manufacturer that meets the 

required standard shall be used for solvent welding or cementing in connecting 

the ABS materials. 

iv. The solvent cement shall conform to the requirements of ASTM D2564-67 

or CS 272-65 latest issues. The cleaner is a solvent that has a limited effect on 

ABS but will remove direct and grease. The solvent cement shall be labeled with 

the NSF Seal or Approval. 

5. Identification of Pipe and Fittings . 

a. Identification of Pipe and Fittings . The pipe and fittings shall be black in color 
and shall be marked in accordance with listed standard. The following markings 
shall appear on two (opposite) sides of the pipe: 

i. ABS-DWV Schedule 40 and the listed standard; 
ii. NSF-DWV stamp of approval; 
iii. Manufacturer's name and/or registered trademark; 
iv Type; 
v. Grade; and 
vi. Size, 
b. Use PVC fitting ONLY with PVC pipe and ABS fittings ONLY with ABS pipes. 
NEVER use PVC Solvent weld on ABS or ABS solvent weld on PVC. 
(q) Stainless Steel Tube Marking . Stainless steel tubing shall be in conformance with 
ASTM designated standard, Type 430 or Type 439, and shall meet the following marking 
requirements: 

1 . Tubing Grade H or SL shall be color-coded blue. 

2. Tubing Grade G or SM shall be color-coded red. 

3 . Tubing shall be marked at intervals 'no greater than three feet in length in letters not 
less than Vs inch in height, with the following: 



3/11/05 248 CMR- 131 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



a. manufacturer's name or registered trademark; and 

b. the ASTM designation nominal diameter and grade. 

4. The name of the manufacturer shall be permanently incised in each tube at intervals 

not greater than 1 8 inches in length, 
(r) Urinal Wastes . Urinal waste branches and urinal fixture wastes shall conform to the 
following: 

1 . They shall be niade of 

a. extra heavy or service weight cast iron soil pipe and fittings with caulked joints 

b. threaded cast iron pipe with cast iron drainage fittings; or 

c. iron size copper or brass pipe with cast brass drainage fittings. 

2. Resilient gaskets and no hub clamps with elastomeric sealing sleeves shall not be 
used when in direct contact with urinal wastes drains or branches until a intersecting 
point of dilution with other fixtures in the drainage system is attained. 

3. PVC and ABS schedule 40 plastic pipe and fittings may be used only in residential 
type buildings. (Refer to 248 CMR 10.07(4)(f) for (alternative) schedule 80 nipple 
requirements for cairiers.) 

(s) Sumps and Tanks for Sewage . All sumps and tanks for receiving sewage removed by 
mechanical or ejector methods, shall be constructed as follows: 

1. Concrete . Three-inch minimum wall. 

2. Cast Iron . Minimum V4 inch thickness. 

3. Steel. 

a. Minimum % inch thickness for above ground. 

b. For below ground installation the sump or tank shall be encased in concrete 
having a thickness of at least three-inches. 

4. Fiberglass . Reinforced polyester resin glass fibers that comply with ANSI listed 
standards. 

(t) Single Stack Sanitary Drainage System-f "So- Vent") . An engineered single stack system 
employing the use of aerator and de- aerator fittings, designed in compliarice with Cast Iron 
Sovent Design Manual No. 802 and ANSI standard ASME/ANSI B 1 6.45-87 may be used in 
buildings provided the following requirements are satisfied: 

1 . Every such system shall be: 

a. designed or engineered by a qualified person; 
. b. plans of such system shall be approved by a Massachusetts registered professional 
engineer; and 

d. Special-Permission must be sought and granted by the Board pursuant to 
248 CMR 3.04 before installation of such system. 

2. Piping material shall be Type K, L, M, or DWV hard drawn copper tubing or cast 
iron. 

3. All fittings shall be made of cast brass or drawn wrought copper or cast iron and must 
be of DWV design. 

4. No part of a copper system shall receive the waste from urinals. 

5. Any change or redesign in the So-Vent system shall be subject to the requirements 
of 248 CMR 10.06(2)(t). 

6. Every So-Vent system shall have at least one full size vent stack that meets the 
following requirements: 

a. The diameter of the full size vent stack is no smaller than three inches. 

b. The vent stack shall run undiminished in size from the base of the soil or waste 
stack to a point 18 to 24 inches above the roof or reconnect to a stack vent installed 
in accordance with 248 CMR 10.16(4)(b). 

(u) Alternate Materials. Methods, and Systems . The provisions of 248 CMR 10.06 are not 
intended to prevent the use of materials, methods or systems that are not specifically 
authorized or prescribed by 248 CMR 1 0.06, provided such alternate materials, methods and 
systems meet the standards, use and intent of 248 CMR 10.06 and the Board has granted 
Product-approval, a Variance, or a Test-site status pursuant to 248 CMR 3.00. 



3/11/05 248 CMR -132 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 




Figure 1 
No-Hub Coupling Test Configuration Design 



1.5' Length of 10'' No-Hub Pipe 
: 2. 5' Length of 8" No-Hub Pipe 

3. 10" X 8" No-Hub Reducer 

4. 8" X 6" No-Hub Reducer 

5. 6" X 5" No-Hub Wye 

6. 6" X 4" No-Hub Wye 

7. 5" X 4" No-Hub Reducer 

8. 4" No-Hub 1/8 Bend 

9. 4" No-Hub 1/8 Bend 

10. 4" No-Hub End Cleanout 

11, 4" No-Hub Long Sweep 1/4 bend 
: 12. ^'^ NorHub Test Tee 
:13./4''Nb-HubTestTee : "^ 

: 14. 6" X 4" No-Hub Reducer : ; 
. 15. 1- 4" X 10' Length No-Hub Pipe 

16. 1- 4" X 10' Length No-Hub Pipe 

17. 4" X 3" No-Hub Upright Wye 

18. 4" X 2" No-Hub Combinatio Wye and 1/8 Bend 

19. 2" No-Hub 1/4 Bend 

20. 3" X 10' Length No-Hub Pipe 

21. 2" X 10' Length No-Hub Pipe . . 



15 



0- 



15 



15 



12^- 



^ : .li 



20 




^ 



16 



L 



~\ 



19 



16^ 



^ 




(v) Pressure and Leak Test Procedure for Stainless Steel Couplings Used on Cast Iron 
Hubless Soil Pipe . Every manufacturer shall perform the tests as outlined in 248 CMR 
10.06(2)(v) for the purpose of determining liquid and/or gas leaks for pressures which may 
exist in a sanitary and/or storm drainage system. The administration of the test shall meet the 
following requirements: 



3/11/05 



248, CMR -133 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.06: continued 



1 . The testing shall be performed by an Approved-testing-Iab pursuant to 248 CMR 
3.04(4). 

2. Testing shall be completed at the expense of the manufacturer who shall perform 
such test. 

3. The Approved-testing-Iab shall give at least two weeks advance notice to the Board 
of the date scheduled for the test. 

4. The test shall be conducted with: 

a. hubless pipe and fittings manufactured in compliance with CISPI Standard 
Specification 301 latest issue; and 

b. joints that have been assembled in accordance with the manufacturer's 
instructions and/or recommendations. 

5. ' The test shall be for an eight-hour period of time, under a 30-foot hydrostatic head 
of water and at 13-P.S.I.G. and shall show no visible signs of leakage. 

6. The test assembly shall employ gauges at each end with means of expelling air and 
the gauges shall be graduated so that, at maximum test, the indicator on the gauges shall 
be approximately mid-point on said gauges. 

7. The test results shall be certified by the Approved-testing-lab that conducted the 
testing and. also by a Massachusetts registered professional engineer or a registered 

. engineer having a reciprocal agreement with the Board of Professional Engineers for the 
Commonwealth of Massachusetts. 

8. The test assembly and configuration shall employ pipe and fittings listed and as 
shown in 248 CMR 10.06, Figure 1 and shall be installed in accordance with the 
pertinent provisions of 248 CMR 10.00. 

9. AH repair and transition friction type couplings and clariips shall conform to the 
requirements stated in 248 CMR 10.06(2)(v). 

(w) Vacuum Drainage System . An engineered vacuum system that employs specifically 
designed fixtures, piping arrangements and vacuum pumps that are designed and installed 
in compliance with the manufacturer's recommendations may be used in a building or 
structure provided that in addition to being in conformance with 248 CMR 1.00 through 
10.00 the following requirements are satisfied: 

1. Each system shall be designed or engineered by a Massachusetts registered 
professional mechanical engineer and Special-Permission must be granted by the Board. 

2. Piping material shall be type K, L, M or DWV hard drawn copper or cast iron. 

3. All fittings shall be made of cast brass or hard drawn wrought or cast iron and must 
be of DWV design. 

4. Any change or redesign in the vacuum drainage system shall be subject to the 
requirements of 248 CMR 10.06(2)(w) and 10.23. 



10.07: Joints and Connections 



(1) Consistency of Materials . When installing a fitting or inserting piping into an existing 
portion of a soil stack, waste stack, vent stack or drain, the fitting or piping shall be of the same 
material as the existing stack or drain using a joining method outlined in 248 CMR 10.07. 

(2) Types of Joints for Piping Materials . 

(a) Copper Tubing Joints (Potable Water Supply Systems in Buildings^ 

1. Joints shall be made with one of the following: 

a. Copper water tube complying with ASTM B88. 

b. Cast bronze fittings complying with ANSI Standard B 16-1 8. 

c. Wrought copper fittings complying with ANSI-ASME B 16-22. 

d. Flared or brazed connections for all underground piping inside the building. The 
joining method of copper underground shall be brazed or flared fittings. 

2. Joints may employ the use of cast bronze flanges complying with ANSI Standard 
B 16-24. 

3. The joining method between copper and copper alloy tube and fittings shall be by 
soldering in accordance with ASTM B828-standard practice for making capillary joints 
by soldering of copper and copper alloy tube and fittings-latest issue or brazing in 
accordance with ANSI/AWS C3.4. 



3/11/05 248 CMR- 134 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.07: continued 

4. Fluxes used in the soldering or brazing of copper and copper alloy tube and fittings 
shall meet one of the reference standards listed in 248 CMR 10.06: Table 1 and be lead 
free. 

5. Filler metals for soldering or brazing of copper and copper alloy tube and fittings 
shall meet one of the reference standards listed in 248 CMR 10.06: Table I and be lead 
free. 

6. Fluxes used with brazing filler metals or solder filler metals shall be lead free. 

(b) Burned Lead . Every.burned (welded) lead joint; 

1. shall be lapped; and 

2. the lead shall be fused together to form a uniform weld at least as thick as the lead 
being joined. 

(c) Caulked Cast Iron Soil Pipe . Every lead caulked joint for cast iron bell and spigot soil 
pipe shall: 

1. be fmnJy packed with oakum or hemp; 

2. be filled with molten lead that is not less than one inch-deep and does not extend 
more than. Va inch below the rim of the hub; 

3. not have paint, varnish, or other coatings on the jointing material until after the joint 
has been tested and approved; and 

4. have lead run in one continuous pour and shall have the lead caulked tight. 

(d) Ex pansion . Every expansion material shall conform with the type of piping in which 
it is installed. 

(e) Flared . 

1. Copper Tubing . Every flared joint for soft-copper water tubing shall be expanded 
with a flaring tool. 

2. Cross-linked Polyethylene (PEX) . Every flared (metal insert or cold expansion) joint 
for cross-linked polyethylene (PEX) water tubing shall be: 

a. made with fittings meeting approved standards; and 

b. installed in accordance with manufacturer's recommended procedures. 

(f) Hot Poured . Hot poured compound for clay or concrete sewer pipe or other materials 
shall conform to the following requirements: 

1. It shall not be water absorbent and when poured against. 

2. A dry surface shall have a bond of greater than or equal to 100 P.S.I.G. All surfaces 
of the joint shall be cleaned and dried before pouring. If wet surfaces are unavoidable, 
a suitable primer shall be applied. 

3. The compound shall not soften sufficiently to destroy the effectiveness of the joint 
when subjected to a temperature of 160''F. 

4. The compound shall not be soluble in any of the waste carried by the drainage 
system. 

5. Approximately 25% of the joint space at the base of the socket, shall be filled with 
jute or hemp. 

6. A pouring collar, rope or other device shall be used to hold the hot compound during 
pouring. 

7. Each joint shall be poured in one operation until the joint is filled. Joints shall not be 
tested until one hour after pouring. 

(g) Mechanical (Flexible or Slip JointV 

1. Cast Iron Pipe or Ductile Iron Pip e. Every mechanical joint in cast iron pipe or 
ductile iron pipe shall be: 

a. made with a flanged collar, rubber ring gasket, and appropriate number of 
securing bolts; or 

b. made with a preformed molded ring secured by pulling the pipe together in such 
a way as to compress the molded ring. 

2- Clay Pipe . Flexible joints between lengths of clay pipe may be made by using 
resilient materials both on the spigot end and in the bell end of the pipe. 

3. Concrete Pip e. Flexible joints between lengths of concrete pipe may be made using 
rubber materials both on the spigot end aiid in the bell end of the pipe. 

4. Hubless Cast Iron Soil Pipe No-hub . Joints for hubless cast iron soil pipe and fittings 
shall be made with: 

a. elastomeric sealing sleeve; and 

b. stainless steel clamp, clamping screw and housing. 

3/11/05 248 CMR -135 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.07: continued 



5. Split Couplings . Galvanized couplings made in two or more parts, with compression 
gaskets, may be used with grooved end pipe and fittings as specified under 248 CMR 
10.06. 

6. Aluminum DWV Pipe . Joints for connecting aluminum DWV pipe or aluminum 
DWV pipe to hubless cast iron fittings shall be made with; 

a. an end capped adaptor; and 

b. an elastomeric sealing sleeve and stainless steel clamp, clamping screw and 
bousing. 

(h) Plastic . 

1. ABS. PVC and CPVC . 

a. Every joint in ABS, PVC and CPVC piping, except as specified under 248 CMR 
10.13: Piping and Treatment of Hazardous Wastes, shall be made with fittings by 
solvent weld connections. 

b. Solvent weld connections shall be made only with solvent cement manufactured 
specifically for the materials to be joined. 

2. Cross-linked Polvethvlene (PEXV 

a. All joints shall be made with fittings that a joined in the following manner: 
i. metal insert fittings with copper crimp rings; 

ii. stainless steel press sleeves; 

iii. cold expansion fittings with (PEX) reinforcing rings; or 

iv. compression fittings (with formed gaskets) or mechanical joints. 

b. All joints connecting to other materials shall be made with a transition fitting. 

c. All joining methods are to conform to existing standards found in 248 CMR 
10.06, Table 1 unless a Variance has been granted by the Board as specified in 
248 CMR. 3.04(2) ' . 

d. Exception: Metallic fittings used in purified water systems shall be type 316 
stainless steel. 

(i) Precast Requirements . 

1 . Every precast collar shall be formed in both the spigot and bell of the pipe in advance 
of use. 

2. Collar surfaces shall be conical with side slopes of three-degrees with the axis of the 
pipe and the length shall be equal to the depth of the socket. 

3. Prior to making joint contact, surfaces shall be cleaned and coated with solvents and 
adhesives as recommended in the standard. 

4. When the spigot end is inserted in the collar, it shall bind before contacting the base 
of the socket. 

5. Material shall be inert and resistant to both acids and alkalies, 
(j) Slip Requirements . 

1 . Every slip joint shall be madp using approved packing or gasket maiterial, or ground 
joint brass compression rings. 

2. Ground joint brass connections that allow the adjustment of tubing while providing 
a rigid joint when made up shall not be considered slip joints. 

3. Slip joints may be used on the inlet ("house-side") of the trap only, 
(k) Soldered . 

1 . Every soldered joint for tubing shall be made with fittings. 

2. Surfaces to be soldered shall be properly cleaned, reamed and returned to-full-bore. 

3. The joints shall be fluxed properly and fastened using lead free solder. 

4. Joints in copper water tubing shall be made by appropriate use of brass or wrought 
copper water fittings and be properly soldered together. 

5. Soldered joints in copper alloy tube and fittings shall be fabricated in accordance with 
ASTM B-828 and shall utilize solder fluxes that meet the requirements of ASTMB-813. 

6. Solder filler metals used in the fabrication of solder joints in potable water 
applications shall be lead free. 

(1) Threaded . 

1. Every threaded joint shall conform to American National Taper Pipe Thread. 

2. All burrs shall be removed. 

3. Pipe ends shall be reamed and returned to size of full bore, and all chips shall be 
removed. 



3/1 1/05 ^ 248 CMR - 136 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.07: continued 




4. Product-approved pipe compounds and tapes shall be used on male threads only. 

5. Threaded joints used in the piping systems of the potable water supply system of a 
building shall be made with lead free polyetrafluorethylene sealant (such as Teflon"^), 
which shall be applied to the male thread only. 

6. Threads in drainage fittings shall be tapped to provide proper grade and slope, 
(m) Unions . 

1. Drainage System . 

a. Unions may be used only in the crap seal or on the inlet side of the trap. 

b. Unions shall have metal -to-metal ground seats. 

2. Water-supply System . Unions in the water-supply system shall be metal-to-metal 
with ground seats. 

(n) Wiped . 

1. Every joint 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. 

2. Wiped joints shall have an exposed surface on each side of a joint that is greater than 
or equal to V^ inch in width and be as thick as the material being joined. 

3. Wall or floor flange lead-wiped joints shall be made by the use of a lead ring or 
flange placed behind the joints at the wall or floor. 

4. Joints between lead pipe and cast iron, steel, or wrought iron shall be made by means 
of a caulking ferrule, soldering nipple, or bushing. 

(o) Brazed Joints . 

1 . Brazing flux, when required, shall meet the requirements of ANSI/AWS A5.3 1 . 

2. Brazing filler metal and brazing fluxes utilized for the fabrication of brazed joints in 
domestic water supply and potable water distribution system piping shall be lead free. 

(p) Victaulic Joints: 

1. The victaulic press shall be used for joining pipes and fittings for copper, 
galvanized Schedule 40 and stainless steel pipe. 

2. The victaulic press 304 system shall be used for joining victaulic type 304 
stainless steel pipe that meets the requirements of ASTM A-269 grade 304/304L (TP 
304 UNS designation 530400). 

(3) Types of Joints Between Different Piping Materials . . 

(a) Cast Lon to Copper Tubing . Everyjoint between cast iron and copper mbing shall be 
made by the use of a brass caulking ferrule and properly soldering the copper tubing to the 
ferrule. 

(b) Cast Iron to Vitrified Clav . 

1 . Every joint between cast iron piping and vitrified clay piping shall be made either of 
hot poured bitumastic compound or by a preformed bituminous ring. 

2. This ring shall, after ramming, completely fill the annular space between the cast iron 
spigot and the vitrified clay hub. 

(c) Copper Tubing to Threaded Pipe Joints . 

1. Every joint transitioning from copper tubing to threaded pipe shall be made by the 
use of brass or wrought copper adapter fittings. 

2. The joint between the copper pipe and the fitting shall be properly soldered and the 
connection between the threaded pipe and the fitting shall be made with a standard 
nominal pipe size connection. 

(d) Lead Cast Iron. Wrought Iron, or Steel . Everyjoint between lead and cast iron, wrought 
iron, or steel pipe shall be made by means of wiped joints to a caulking ferrule, soldering 
nipple, bushing, or by means of a mechanical adapter. 

(e) Threaded Pipe to Cast Iron . Every joint between wrought iron, steel, or brass, and cast 
iron pipe shall be either caulked or threaded or shallbe made with approved adapter fittings. 

(f) Special Joints and Connections . Unless specifically outlined in.248 CMR 10.07 or other 
applicable sections of 248 CMR 10.00, unlike piping materials shall be joined or connected 
to by use of adapters, transition fittings, prefabricated sealing ring or sleeve. 

(g) ABS or PVC Plastic to Other Materials . 



3/11/05 248 CMR -137 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.07: continued 



1. Threaded Joints . 

a. ABS or PVC (DWV) joints when threaded shall use the proper male or female 
threaded adapter. 

b. Only thread tape or lubricant seal or other Product-approved material as 
recommended by the manufacturer shall be used. 

2. Cast Iron Spis:ot Hub Joints . 

a. Joints shall be connected by caulking with lead and oakum or by the use of a 
compression gasket that is compressed when the plastic pipe is inserted in the cast 
iron hub end of the pipe. 

b. No adapters are required for this connection. 

3. No Hub Joints . 

a. Joints where the outside diameter of the two pipes or fittings to be joined are 
uniform in diameter may be joined with an elastomeric sealing sleeve and stainless 
steel no hub clamp. 

b. PVC to ABS connection shall be implemented by: 
i. using a DWV male to female adaptor; or 

ii. by a no hub clamp, 
(h) Aluminum DWV Pipe to Hubless Cast Iron Pipe or Fittings . Joints for connecting 
aluminum DWV pipe or aluminum DWV pipe to hubless cast iron fittings shall be made 
with an elastomeric sealing sleeve and stainless steel clamp, clamping screw and housing and 
end protector caps. 

(4) Connections Between Drainage Piping and Certain Fixtures . 

a. Connections between drainage pipes and toilets, floor outlet service sinks, pedestal 
urinals, earthenware trap standards or other similar fixtures with floor outlets shall be 
fastened with brass, wrought copper, hard lead, iron or plastic flanges, that is caulked, 
soldered or solvent welded to the flanged connection. 

b. A gasket, washer or setting compound between the fixture and the flange is required. 

c. Only brass or stainless steel nuts and bolts shall be used. 

d. The floor flange shall be fastened to a structurally firm base. 

e. The use of commercial putty or plaster as a setting. compound is prohibited. 

f. Schedule 80 PVC or ABS threaded nipples may be used to connect toilets and urinals to 
carriers of such fixtures. 

(5) Tightness . Joints and connections in the plumbing system shall be gastight and watertight 
for the pressure required by test, with the exceptions of those portions of perforated or open joint 
piping that are installed for the purpose of collecting and conveying ground or seepage water to 
the underground storm drains. 

(6) Waterproofing of Openings . 

(a) Joints terminating at the roof around roof drains and vent pipes shall be made watertight 
by the use of lead, copper, aluminum, or other flashing or flashing materials. 

(b) Caps for extended roof flanges shall be made to fit tight to the inside circumference of 
the vent pipe. The cap shall not decrease the pipe opening by more than the thickness of the 
cap material. 

(c) Exterior wall openings shall be made watertight. 

(7) Increasers and Reducers . When interconnecting pipes and fittings, fittings and fittings, or 
pipes and fittings that have different sizes the size of the increaser or reducing fittings shall be 
selected and installed so as to prevent the restriction of flow between the interconnection. 



10.08: Traps and Cleanouts 



(1) Fixture Traps . 

(a) Separate Traps for Each Fixture . 
^ 1 . S eparate Trapping Required: 

. a. Individual plumbing fixtures shall be separately trapped by a water seal trap 
placed as close as possible to the fixture outlet. 



3/11/05 248 CMR -138 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.08: continued 




b. The developed length distance from the fixture outlet to the trap weir shall not 
exceed 24 inches. 

c. No fixture shall be double trapped. 

2. A fixture need not be separately trapped. Exceptions to the separate trapping 
requirements are as follows: 

a. Fixtures having integral traps. 

b. A combination plumbing fixture may be installed on one trap provided one 
compartment is not more than six inches deeper than the other and the waste outlets 
are not more than 30 inches apart. 

c. One trap may be installed for not more than three single compartment sinks or 
lavatories, immediately adjacent to each other, and in the same room. The trap is to 
be centrally located when three such fixtures are installed. The center to center 
measurement of the waste outlets shall not exceed 30 inches apart. 

d. The waste for a domestic type dishwasher may be separately trapped, or may 
connect to the manufactured inlet side opening of a food waste grinder. A "wye" 
fitting may be installed between the outlet of the food waste grinder and the inlet of 
the trap serving the kitchen sink. 

(b) Size of Fixture Traps . 

1. Fixture trap size (nominal diameter) shall be sufficient to drain the fixture rapidly and 
in no case less than outlined in 248 CMR 10.08: Table 1 (Minimum Size of Fixture 
Traps). 

2. No trap shall be larger than the drainage pipe into which it discharges. 

TABLE 1 
MINIMUM SIZE OF FDCTURE TRAPS 



Plumbing Fixture 


Trap Size in Inches 


Bathtub (with or without overhead shower) 


P/2 


Bidet 


IVi 


Clothes washer (domestic) 


W-i 


Combination sink and wash tray 


Vh 


Combination sink and wash tray with food waste grinder unit 


Vh 


Dental unit or cuspidor 


Vh 


Dental Lavatory 


W^ 


Drinking fountain 


Vh 


Dishwasher, commercial 


2 


Dishwasher, domestic 


Vh 


Floor drain 


2 


Food waste grinder 


Vh 


Kitchen sink, domestic, with food waste grinder unit 


Vh 


Kitchen sink (two compartments) 


Vh 


Kitchen sink, domestic 


Vh 


Lavatory, common 


Vh 


Lavatory (barber shop, beauty parlor or surgeon's) 


Vh 


Lavatory, (multiple type) (wash fountain or wash sink) 


Vh 


Laundry sink (one or two compartments) 


V/^ 


Shower stall 


2 


Sink (surgeon's) 


Vh 


Sink (flushing rim type, flush valve supplies) 


3 


Sink (service type with floor outlet trap standard) 


3 - 


Sink (service trap with P trap) 


2 


Sink, commercial (pot, scullery, or similar type) 


2 


Sink, commercial (with food grinder unit) 


2 



(c) Prohibited Trap s. The following type traps are prohibited. 

1 . Traps which depend upon moving parts to maintain their seal. 



3/11/05 



248 CMR -139 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.08; continued 



2. Bell traps. 

3. Crown vented traps. 

4. Separate fixture traps which depend on interior partitions for their seal. 

5. Full "S" traps. . 

(d) Design of Traps . 

1. Fixture traps shall be self-scouring and shall have no interior partitions except where 
such traps are integral with the fixture. 

2. Slip joints or couplings may be used on the trap inlet or within the trap seal of the 
trap if a metal-to-metal ground joint is. used. 

3. Each fixture trap, except a trap that is cast integrally or in combination with the 
fixture in which the trap seal is readily accessible or except when a portion of the trap is 
readily removable for cleaning purposes, shall have an accessible cleanoutplug of ample 
size that is protected by the water seal. 

(e) Fixture Trap and Connection Material (HOUSE SIDE) shall meet ASME Al 12.18.2- 
2002 . 

1 . Fixture traps shall be made of cast brass, with a wall thickness of not less than .01 
inches, or of schedule 40 ABS or PVC. 

2. Cast iron traps may be used in connection with floor drains, slop sinks, building 
(house) traps, conductors (when necessary) and similar installations, weights and 
thicknesses to comply with like materials under 248 CMR 10.06. 

3. Slip nuts used to connect fixmre and appliance outlet piping to the trap, shall be 
composed of brass, copper or schedule 40 ABS or PVC. • 

4. Tubing traps made of brass or copper shall be of a thickness equal to a minimum of 
17 gauge. 

5. When devices including strainers, P. O. (pull out) plugs, tail pieces, waste arms, 
. bathtub wastes and overflows, and any other similar fixture to trap connection, when of 

metal, shall be made of brass or other non-corrosive metal, and the device shall have a 
thickness greater than or equal to 17 gauge. 

6. All items listed in 248 CMR I0.08(l)(e)4. and 10.08(l)(e)5. when made of ABS or 
PVC may be used, provided that they all comply with ASME A 11 2. 18.2 for PVC and 
ABS Tubular Traps and'Fittings. 

(f) Trap Seal . Each fixture trap shall have a liquid seal of not less than two inches and not 
more than four inches, except where for special conditions, a deeper seal may be required. 

(g) Trap Setting and Protection . Traps shall be set level with respect to their water seals 
and, where necessary, shall be protected from freezing. 

(h) Building Traps . 

1 . Building (House/running traps) traps shall not be installed, unless in the opinion of 
the Inspector they are necessary. 

2. Each building trap when installed shall be provided with a cleanout and with a 
relieving vent or fresh air intake which need not be larger than '/2 the diameter of the 
drain to which it connects. 

(i) Acid Resistant Trap . Where a vitrified-clay or other brittleware, acid-resistant trap is 
installed underground, it shall be embedded in concrete extending six inches beyond the 
bottom and sides of the trap. 

(2) Drainage Pipe Cleanouts . 

(a) Location . Cleanouts shall not be placed more than 50 feet apart in all horizontal 
drainage piping and branch drain piping that is four inch nominal diameter or less. On piping 
that is over four inch nominal diameter the cleanouts shall not be more than 100 feet apart. 

(b) Underground Drainage . Cleanouts, when installed on an underground drainage piping, 
shall be: 

1. extended vertically to or above the finished grade level; or 

2. extended to an accessible location immediately outside the building. 

(c) Change of Direction . Accessible cleanouts shall be installed: 

1. at each change of direction of the building drain; or 

2. at each change of direction of horizontal waste or soil lines and branch- lines, that are 
greater then 45°. 



3/11/05 248 CMR -140 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.08: continued 




(d) Concealed Piping . Cleanouts on concealed piping shall be extended thi-Qugh and 
terminate' flush with the finished wall or floor; or pits or chases may be left in the wall or 
floor, provided they ai-e of sufficient size to allow removal of the cleanout plug and proper 
cleaning of the system. 

(e) Base of Stacks . A cleanout shall be provided at or near the base of each vertical storm 
water conductor, waste or soil stack. 

(f) Inaccessible Stack Cleanouts . For buildings with concrete floors (slabs) or with less than 
18 inches of crawl space under the floor, or where a stack cleanout is not easily accessible, 
the following shall be provided in lieu of a cleanout at the base of the stack. 

1 . The building drain shall be extended to the outside of the building and terminated in 
an accessible area. 

2. The accessible area for the cleanout shall be not more than five feet beyond the 
foundation/building wall. 

(g) Building Drain at Foundation Wall . 

1. There shall be a cleanout on the building drain so located as to provide accessibility 
in direct line through the building drain to building sewer. 

2. If necessary a pit or manhole shall be provided in a location determined by the 
Inspector. 

3. When cast iron soil pipe and fittings are used, the joining methods shall comply with 
248 CMR 10.07(2)(c)l. and shall be installed as diagramed in 
248 CMR 10.22: Figure 18. 

(h) Direction of Flow . Eveiy cleanout shall be installed so that the cleanout opens in the 

direction of the flow of the drainage line or at right angles thereto. 

(i) Cleanout Size . Cleanouts shall be of the same nominal size as the pipes up to four 

inches and not less than four inches for larger piping. 

(j) Cleanout Clearances . 

1. Large Pipe - 18 Inch Clearance : Cleanouts on three inch or larger pipes shall be so 
installed that there is a clearance of not less than 18 inches for the purpose of clearing 
stoppages. 

2. Small Pipe - 12 Inch Clearance : Cleanouts smaller than three inches shall be so 
installed that there is a 12-inch clearance for the purpose of clearing stoppages. 

(k) Cleanouts Shall Be Kept Uncovered and Accessible . 

1. Cleanout plugs shall not be covered with cement, plaster, or any other permanent 
finishing material. 

2. Where it is necessary to conceal a cleanout plug, a covering plate or access door shall 
be provided which will allow ready access to the plug for removal. 

(1) Cleanout Equivalent . The cleanout equivalent may be satisfied by one of the following 
methods if accepted by the Inspector: 

1. a fixmre trap that incorporates a union connection; 

2. a fixture with an integral trap; or 

3. roof drains that are readily removable without disturbing concealed roughing work, 
(m) Connections to Cleanouts Prohibited . Cleanout openings shall not be used for the 
installation of any new or additional plumbing, except when: 

1. approved in writing by the Inspector; and 

2. where another end-cleanout of equal access and capacity is provided, 
(n) Manholes for Large Pipes . 

1. For underground "dedicated system" piping that is over ten inches in diameter and 
is outside a building, manholes shall be provided and located at every change of size in 
diameter, alignment, grade or elevation and at intervals of not more than 300 feet except 
when the total developed length of the drain is less than 150 feet cleanouts may be 
installed at 75 foot intervals. 

2. Manholes shall conform to current standards and engineering practices. 



3/11/05 248 CMR -141 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.09: Interceptors. Separators and Holding Tanks 

(1) Interceptors. Separators and Holding Tanks . 

(a) Interceptors Required . 

1. Interceptors and separators shall be provided to prevent the discharge of oil, gasoline, 
grease, sand, and other substances, that are harmful or hazardous to the building drainage 
system, the public sewer, or sewage treatment plant or other sewage treatment processes. 

2. No wastes other than those requiring treatment or separation shall be discharged into 
any interceptor or separator. 

(b) Separators or Holding Tanks Required . 

1. Requirements . 

a. Gasoline, oil and sand separators subject to 248 CMR 10.09(l)(c). An applicant 
for a plumbing permit to install a separator that is subject to 248 CMR 10.09(l)(b) 
in the MWRA (Massachusetts Water Resource Authority) Sewage District, shall file 
a notice with the MWRA. This notice shall be filed at the same time as the plumbing 
application for a permit is filed with the Inspector. 

b. Except as provided in 248 CMR 10.09(4)(c), there shall be floor drains installed 
in all commercial motor vehicle: 

i. parking and storage accommodations; 

ii.. repair garages, repair facilities or auto body repair facilities; 

iii. service facilities with or without grease racks and grease pits; 

iv. wash rack areas; 

V. wash areas (including automatic car wash structures); and 

vi. facilities where motor oils, gasoline, anti-freeze and similar hazardous liquid 

wastes are potentially generated or may potentially spill. 
The floor drains waste shall be conveyed through waste piping installed in 
accordance with 248 CMR 10.15 and shall discharge into a gas, sand and oil 
separator installed in accordance with 248 CMR 10.09(4)(d)l.a. and 248 CMR 
10.23: Figure 15 and be connected to a municipal sewer system. In unsewered 
ai^eas, a holding tank that meets the requirements of 310 CMR 15.00: The State 
Environmental Code, Title 5:- Standard Requirements for the Siting, Construction, 
Inspection, Upgrade and Expansion of On-site Sewage Treatment and Disposal 
Systems and for the Transport and Disposal of Septage (The Department of 
Environmental Protection) and policies shall be used in lieu of a municipal sewer 
connection. 

c. Connections to municipal sewers shall be installed and maintained in accordance 
with 3 14 CMR 7.00. 

d. All holding tanks and the associated drainage and vent piping is considered a 
dedicated system as defined in 248 CMR 10.03(b). The chamber of the holding tank 
shall be vented independently back to the building it serves and through the roof in 
accordance with 248 CMR I0.09(4)(f)(l). 

e. The entire installation within the property line shall comply with all related 
provisions of 248 CMR 3.00 through 10.00. 

2. Vents for Floor and Trough Drains . The vents for the floor/trough drains that convey 
waste to a gasoline, oil and sand separator shall be independent of the sanitary DWV 
systems. Vents for the floor/trough drain(s) in facilities served by a gasoline, oil and 
sand separator may connect to the chamber vent of the separator no less than six inches 
above the flood level rim of the floor/trough drain fixture. 

3." Floor Drains and Trough Drains Required . Separators and floor drains/trough drains 
shall be required in condominium structures or multi family residential structures with 
residential garages: 

a. that have over six car capacity and have living units above or below; and 

b. if the vehicles share a conunon area. 

4. Facilities, as defined in 248 CMR 10.09(l)(b) not connected to a municipal sewer 
system or a holding tank, as defined in 248 CMR 10.09(l)(b), constructed, existing, and 
operating prior to January 9, 1992 shall: 

a. connect to a municipal sewer system as per the requirements of 248 CMR and 
314 CMR 7.00 and all other applicable laws, codes, rules, and regulations; 



3/1 1/05 248 CMR - 142 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



1.0.09: continued 



b. connect to a holding tank (as defined in 248 CMR 10.09(2)(b); or 

c. seal the floor drains with caps or plugs in accordance with 248 CMR 10.07, 
provided that, an application for sealing of floor drains that includes a WS-1 form 
from the Department of Environmental Protection Waste Minimization Program 
Procedures (DEP Form WS-1) is filed and approved by the Inspector before 
commencing any work. A copy of the form indicating the Inspector's approval shall 
be returned to the DEP by the applicant, as indicated on the document. 

(d) Ap proval of Separators . 

1. Size. Type and Location . 

a. The size (capacity), type, and location of each separator, shall be in conformance 
with 248 CMR 10.22: Figure 15 (Gasoline-oil and Sand Separator). Alternate 
design separators may be used see 248 CMR 3.04(2) or (3). 

b. No wastes other than those requiring treatment or separation shall be discharged 
into any separator. 

. 2. All Separators to Follow Type Approved . No separator shall be installed which does 
not comply in all respects with drawings and specifications shown in the appropriate 
section of 248 CMR 10.00. 

3. Municipalities Interconnected with Massachusetts Water Resources Authority 
fMWRA) Sewerage Svstem . 

a. In all cities and towns, where the sewage disposal is discharging into the 
Massachusetts Water Resources Authority Sewage System, separator installations- 
shall be inspected by the Inspector and approved by the MWRA. 

b. Notice of a pre-planned separator installation shall be submitted to the MWRA 
before an application for a plumbing permit is filed with the Inspector pursuant to 
248 CMR 3.05. 

(e) Separation of Liquids . A mixture of light and heavy liquids having different specific 
gravities may be treated and then separated in a receptacle. 

(f) Venting . 

1 . Interceptors and separators shall be so designed that they will not become air bound, 
when closed covers are used. 

2. Each interceptor shall be properly chamber vented to comply with 248 CMR 10.16 
and each separator to comply with Drawing and Specification (248 CMR 10.22: Figure 
15). 

(g) Accessibility . 

1. Each interceptor and separator shall be so installed that it is readily accessible. 
2.. The removal of the cover shall be accessible for the purpose of service and 
maintenance. 

3. The use of ladders or moving of heavy objects in order to service interceptors or 
separators shall constitute a violation of accessibility. 

(h) Maintenance . Interceptors and separators shall be maintained in efficient operating 
condition by the periodic removal of accumulated grease, scum, oil, or other suspended 
substances, solids and silt deposits accumulated at the bottom of the interceptor or separator. 

(2) Grease Traps and Interceptors When Installed Inside of Buildings . 

(a) Grease traps and interceptors shall be installed in the following establishments to 
prevent the discharge of fats, oils, and grease into the drainage system: 

1. restaurants; 

2. cafeterias; 

3. hotels; 

4. hospitals; 

5. institutional facilities; 

6. factories; 

7. clubs; 

8. bars where food is prepared and served; and 

9. all commercial kitchens; food and meat packing and processing establishments; super 
markets, bakeries, and other establishments where fats, oils and grease may be introduced 
into the building sanitary drainage system in quantities that can cause waste line 
obstruction or hinder sewage disposal. 



3/11/05 248 CMR -143 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.09: continued 



(b) Grease traps and interceptors may be installed on individual fixture waste branches. 

(c) Plumbing fixtures to be protected by grease traps and interceptors shall include: 

1. pot sinks (with bowl depths exceeding ten inches); 

2. scullery sinks (with bowl depths exceeding ten inches), 

3. floor drains; 

4. floor sinks; 

5. automatic dishwashers regardless of temperature; 

6. pre-rinse sinks; 

7. soup kettles or similar devices; 

8. wok stations; and 

9. automatic hood wash units; 

(d) In unsewered areas refer to 310 CMR 15,00: The State Environmental Code, Title 5: 
Standard Requirements for the Siting, Construction, Inspection, Upgrade and Expansion of 
On-site Sewage Treatment and Disposal Systems and for the Transport and Disposal of 
Septage relative to grease removal at installations from which large quantities of grease can 
be expected to discharge. 

(e) Floor Drain Exception : Floor drains that may encounter grease residue and are 
specifically designed for this purpose may conduct grease to an outside grease interceptor. 
Grease interceptors may be installed on a separate building drain and shall only receive the 
discharge from fixtures or equipment which would allow fats, oils or grease to be discharged 
to the sanitary drainage system. 

(f) Food Waste Grinders and Pre-rinse Sinks . 

1. The waste from dishwasher pre-rinse sinks that are not equipped with food waste 
grinders shall be discharged to the drainage system through a grease trap interceptor. 

2. A dishwasher pre rinse sink drain not equipped with a food waste grinder that 
conveys the waste discharge to a dish washing machine drain as shown in 248 CMR 
10.22: Figure 22 shall be a minimum diameter of two inch. The total developed length 
of the horizontal waste drain from the dishwasher pre-rinse sink outlet to the weir of the 
dish washing machine trap shall not exceed eight feet. 

3. The waste discharge from a commercial food waste grinder (garbage disposal) shall 
not discharge to the sanitary drainage system through a grease trap. Dishwasher pre-rinse 
sinks equipped with food waste grinders shall be discharged in accordance with 
248 CMR 10.10(8)(b), (c), and (d). 

(g) Sizing. Testing and Rating . 

1. Grease traps and interceptors shall not be installed unless sized, tested, and certified 
according to PDI-GlOl or ASME Al 12. 14.3 or ASME A112.14.4. 

2. Grease traps and interceptors must bear the certification seal of the Plumbing and 
Drainage Institute (P.D.I.) or AMSE. The Board may authorize the use of alternate 
design traps and interceptors in accordance with 248 CMR 3.04(2) or (3). 

(h) Capacity . Installed grease traps and interceptors shall have a grease retention capacity 
of not less than two pounds of grease for each G.P.M (gallon-per-miriute) of flow, 
(i) Flow Control Device . 

1. Grease traps and interceptors shall be equipped with flow control devices. A flow 
control device may be equipped with a vented (air intake) or be of an integral non-vented 
design. Integral non-vented flow control device shall be placed in accordance with 
manufacturers recommendations. A flow control device is required to be installed 
between the fixture and the grease trap/interceptor in accordance with manufacturers 
instructions. 

2. The flow control device is designed to regulate the flow and discharge rate of waste 
water through the trap or interceptor. 

3 . The vented external flow control device air intake when installed in combination with 
a Grease Trap, may terminate to the free atmosphere provided it terminates a minimum 
of six inches above the flood level rim of the fixture(s) being served. 



3/11/05 248 CMR -144 



10.09: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




4. The vented external flow control devices when installed in combination with a 
Grease Interceptor may connect to the sanitary venting system of a building or structure 
provided that the external flow control and fixture(s) are protected by a trap installed in 
accordance with all applicable provisions of 248 CMR 10.00. 

5. A flow control device will not be required for interceptor/separators that are designed 
to provide a retention capacity of 30 minutes or less. 

(j) Water Cooled Interceptors/Separators . The use of water- cooled interceptors/separators 

is prohibited. 

(k) Interceptors Not Required . 

1 . Grease traps and interceptors are not required for residential bui]ding(s), structure(s), 
dwellings or dwelling units or any private residence. 

2. Grease traps and interceptors shall be required in buildings deemed residential that 
incorporate commercial cooking accommodations. 

(1) Treatment Agents and Chemicals . Chemicals, liquids or agents of any type used for the 
primary purpose of emulsification and separation of grease that by formula allow grease to 
be transferred or conveyed from the trap or interceptor to the drainage system are prohibited, 
(m) Maintenance . 

1. Grease and accumulated solids shall be removed from traps and interceptors and 
disposed of in accordance with applicable Federal, State and Local health code 
requirements by the owner or his/her agent. Federal, State and Local laws, regulations 
and by-laws may require monitoring and registration of installed traps and interceptors. 

2. The local board of health official(s) or similar authority having jurisdiction may 
require other methods or programs to monitor maintenance of grease traps and 
interceptors. 

3. A laminated sign shall be stenciled on or in the immiediate area of the gi-ease trap or 
interceptor in letters one-inch high. The sign shall state the following in exact language: 



IMPORTANT 
This grease trap/interceptor shall be inspected and thoroughly cleaned on a 
regular and frequent basis. Failure to do so could result in damage to the 
piping system, and the municipal or private drainage system(s). 



(n) Procedures for Sizing Grease Interceptors . 

1. Grease traps and interceptors shall be sized in accordance with the following 
Recommended Procedures For Sizing Grease Interceptor and 248 CMR 10.22: Figure 
22. 

2. Recommended Procedures and Formulas for Installing Grease Traps and Interceptors . 
As a general rule it is recommended that traps and interceptors be sized in accordance 
with the formulas indicated in 248 CMR 10.09: Tables J through 3. It is favorable 
pohcy to size the interceptor so that its rated capacity is never less than 40% of the 
individual fixmre capacity in gallons. In the example below the actual fixture capacity 
is 59.8 Gals, and 40% of this would be 23.9 Gals. It is understood that a drainage period 
other than one or two minutes can be used. 



3/1 1/05 



248 CMR - 145 



10.09: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 10.09: Table 1: 

RECOMMENDED PROCEDURE FOR SIZING 

GREASE TRAPS AND INTERCEPTORS INSIDE BUILDINGS 

EXAMPLE (Single Compartment) 



STEP 1 . Determine the cubic content of the fixture 
by multiplying length x width x depth, (of each comp) 


A sink 48" long by 24" width by 12" deep. 
Cubic content 48" x 24" x 12" = 13,824 cu. in. or 
Cubic contents 4' x 2' x 1' x 7.5 Gals. = 60 Gals. 


STEP 2. Determine the total capacity in gallons. 
1 gallon = 23 1 cubic inches 


Contents in Gallons 13.824/231 = 59.8 Gals. 


STEP 3. Determine actual drainage load. The fixture 
is usually filled to approximately 75% of the capacity 
with waste water. The items being washed displace 
about 25% of the fixture content. Actual drainage load 
= 75% of fixture capacity. 


Actual Drainage Load .75 x 59.8 Gals. = 44.9Gals 


STEP 4. Determine the flow rate and the drainage 
period. In general, good practices dictate a one minute 
drainage period, however where conditions permit, a 
two minute period is acceptable. Drainage period is 
the actual time required to completely empty the 
fixture. 


Calculate flow rate for 1 minute period. 
Flow rate 44.9 Gals. 1/min. =44.9G.P.M. 

For 2 minute period 

Flow rate 44.9 Gals./2min. = 22,5 G.P.M. 


STEP 5. Select the interceptor which corresponds to 
the flow rate calculated Note: Select larger size when 
flow rate falls between two sizes listed. 





NOTE: The example above is representative of acceptable method(s) when purchasing an interceptor 
based on the total fixture flow rate capacity in gallons. When purchasing an interceptor based on 
grease retention pounds only, multiply the total gallon flow rate capacity of the fixture by two. 



248 CMR 10.09 Table 2: 

SIZING FORMULAS FOR LARGE CAPACITY 

GREASE INTERCEPTORS (INSIDE OR OUTSIDE BUILDINGS') 



For Restaurants: 


Other Establishments with Commercial Kitchens: 


(S) X (OS) X (HR/12) X (LP) = Effective Capacity 
of Grease Traps and Interceptors in Gallons 


(M) X (GM) X (LF) = Effective Capacity of 
Grease Traps and Interceptors in Gallons 


WHERE: 


WHERE: 


S = Number of Seats in Dining Area 
GS = Gallons of Waste Water Per Seat: 
HR = Number of Hours Restaurant is Open. 
LF = Loading Factor 

Use 25 Gallons for Restaurants with China 
Dishes and/or automatic dishwashers 

Use 10 Gallons for Restaurants with Paper or 
Baskets and No Dishwashers. 


M = Meals Prepared Per Day 

GM = Gallons of Waste Water Per Meal (Use 

5 Gallons) 

LF = Loading Factor 

Use 1 .00 with dishwashing machines and 
0.75 without dishwashing machine. 


Loading Factors: 




Use 2.00 Interstate Highway, q 
Use 1.00 Main Highway, 
Use 0.75 Other Highways 
Use 1.50 Other Roadways 
Use 1.25 Recreational Areas 





3/11/05 



248 CMR - 146 




10.09: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



248 CMR 10.09: Tabled: 
CAPACITY OF GREASE TRAPS AND INTERCEPTORS 



Total Flow Through 
Rating (g.p.m) 


Grease Trap/Interceptor 
Retention Capacity 
(pounds) 


4 


8 


6 


12 


7 


14 


9 


18 


10 


20 


12 


24 


14 


28 


15 


30 


18 


36 


20 


40 


25 


50 


35 


70 


50 


100 




(3) Grease Interceptors Installed Outside of the Buildings 

(a) General Requirements for Outside Interceptors . When an outside grease interceptor is 
installed, the entire installation within the property line shall comply with 248 CMR 
10.03: Dedicated Systems, and the installation shall be designed by a registered professional 
mechanical engineer. 

(b) This installation shall require a chamber vent which shall: 

1. be piped to the inside of the building in compliance with 248 CMR 10.1 6(5)(e); and 

2. shall be not less than four inch minimum pipe diameter. 

(4) Special Use Installations . 

(a) Sand Interceptors -- Floor Drains . 

1. Wherever a floor drain discharges waste to an oil and gasoline separator, the floor 
drain shall be equipped with an approved sediment and sand control basket, or the floor 
drain shall discharge through a sand interceptor. 

2. Multiple floor drains may discharge into one sand interceptor. 

(b) Sand Interceptors — Commercial Establishments . Sand and similar interceptors for 
heavy solids shall; 

1 . be so designed and located as to be readily accessible for cleaning; and 

2, have a water seal of not less than six inches. 

(c) Laundries . Commercial laundries shall be equipped with an interceptor having a wire 
basket or similar device, removable for cleaning, that will prevent passage into the drainage 
system of solids Vi inch or larger in size, string, rags, buttons, or other materials detrimental 
to the public sewerage system. 

(d) Bottling Establishments . Bottling plants shall discharge their process waste into an 
interceptor that provides for the separation of broken glass or other solids, before discharging 
liquid wastes into the drainage system. 

(e) Slaughter Houses . Slaughtering room and dressing room drains shall be equipped with 
interceptors approved by the Plumbing Drainage Institute which shall prevent the discharge 
into the drainage system of feathers, entrails, and other materials likely to cause stoppage of 
the drainage system. 



10.10: Plumbing Fixtures 



(1) Fixture Materials and Quality . Plumbing fixtures shall be constructed from Product- 
approved materials, have smooth and impervious surfaces and be free from defects, and, except 
as provided elsewhere in 248 CMR 10.00, shall conform to the applicable standard listed in 
248 CMR 10.06: Table 1. 



3/11/05 



248 CMR - 147 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



(2) Overflows . 

(a) Design . When any fixture is provided with an overflow, the waste shall be arranged so 
that the standing water in the fixture cannot rise in the overflow when the stopper is closed 
or remain in the overflow when the fixture is empty. 

(b) Connection . The overflow from any fixture shall discharge into the drainage system on 
the inlet or fixture side of the trap, except that the overflow from a flush tank serving a toilet 
or urinal shall discharge only into the fixture served. 

(3) Installation . 

(a) Cleaning . All fixtures must be installed so as to afford easy access for cleaning both the 
fixture and the ai'ea about it. 

(b) Joints . Where a fixture comes in contact with walls and floors, the joint shall be 
watertight. 

(c) Securing FixUjres . Floor outlet fixtures and wall hung fixtures shall be rigidly secured 
to the finished floor or wall by screws or bolts, or other methods in compliance with 
manufacturers instructions and codified in 248 CMR 10.05(7). 

(d) Wall-hung Bowls . Wall hung toilet bowls shall be rigidly supported by a concealed 
metal Product-approved fixture earner so that no strain is transmitted to the toilet discharge 
connection, or the wall. 

(e) Setting . Fixtures shall be set plumb, level and in proper alignment with reference to 
adjacent walls. 

(4) Prohibited Fixtures . The following fixtures are prohibited. 

(a) A pan, valve, plunger, offset, washout, frost proof latrine, or other toilet which has an 
invisible seal, mechanical seal or an unventilated space. 

(b) A toilet that has walls that are not thoroughly washed at each discharge. 

(c) A toilet that may enable siphonage of the contents of the bowl back into the tank. 

(d) Trough urinals and floor stall urinals. 

(e) Wall hung urinals connected to an exposed trap. 

(5) Toilets . 

(a) Public Use . A toilet for public use shall be of the elongated type. 

(b) Flushing Device . A toilet tank shall have sufficient capacity to flush properly the toilet 
bowl with which it is connected. 

(c) Float Valve and Ballcocks . A float valve or ballcock in a toilet flush tank shall be of 
anti-siphon design and shall provide sufficient water to refill the trap seal in the toilet bowl. 

(d) Flushometer Valves . 

1. A flushometer valve shall be so installed that it will be readily accessible for 
repairing. 

2. When the valve is operated, it shall complete the cycle of operation automatically 
opening and closing positively under the service pressure. 

3. At each operation the valve shall deliver water in sufficient volume and at a rate that 
will thoroughly flush the fixture and refill the fixture trap. 

4. Means shall be provided for regulating the. flushometer valve flow. 

5. Not more than one fixture shall be served by a single flushometer valve. 

6. Protection against backflow shall be provided as specified in 248 CMR 10.14(7). 

(e) Seats . A toilet shall be equipped with a seat of smooth non-absorbent material. The seat 
of a toilet that is provided for public or semi-public use shall be of the open front type. - 

(f) Alternative Technology Toilet Systems . 

1. Areas subject to 310 CMR 15.00 or where sewers are unavailable innovative 
alternative technology toilets may be installed in place of a liquid sealed toilet. These are 
considered plumbing fixtures under 248 CMR 10.00 and therefore the permit 
requirements must be satisfied. 

2. The alternative technology toilet system shall be manufactured to NSF-4 1 standards 
and shall be installed in compliance with the manufacturer's instructions. 



3/1 1/05 248 CMR - 148 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



(6) Urinals . 

(a) Urinal Fixtures . 

1. Only pedestal urinals and wall hung urinals with integral traps shall be used. 

2. Urinals shall be flushed only by means of an automatic flushing tank or flushometers 
equipped with a back flow preventer. 

(b) Automatic Flushing Tank . A tank that flushes more than one urinal, shall be automatic 
in operation; and shall be of sufficient capacity to provide the necessary water to flush and 
cleanse properly all urinals simultaneously. 

(c) Materials Surrounding Urinals for Public or Semi-public Use . 

1 . The floor areas one foot in front of the urinal lip and one foot on each side of the 
urinal, and the wall areas to four feet above the floor, shall be finished so as to be 
non-absorbent. 

2. Wood and fiber boards are prohibited in the above noted areas. 

(d) Every urinal shall be side shielded for privacy. 

(7) Shower Baths. Stalls and Compaitments . 

(a) Shower Head Supply Riser . Every shower head supply riser or extension from the 
shower valve to the shower head outlet, whether exposed or. not, shall be securely attached 
to the structure. 

(b) Shower Waste Outlet . 

1. Waste outlets serving shower stalls and compartments that are not part of bathtubs 
shall be no less than two inches in diameter, shall have removable strainers not less than 
three inches in diameter, and shall have strainer openings not less than Vo inch in 

■ minimum dimension. 

2. In shower rooms or in an area that multiple shower heads are installed and the 
individual shower space, area, stall or compartment is not provided with an individual 
waste outlet, the waste outlet shall be so located that the floor is designed and pitched so 
that waste water from one shower head area does not flow over the floor area serving 
another shower head area. 

3. Waste outlets shall be securely fastened to the waste pipe and make a watertight 
connection thereto. 

(c) Shower Compartments . 

1. Shower compartments and stalls shall have at least 900 square inches of floor area 
and be not less than 30 inches in minimum dimension measured from its finished interior 
dimension as the side of a rectangle, altirude of a triangle or diameter of a circle or other 
angular shape. 

2. The minimum required area and dimension shall be measured from its finished 
interior dimension at a height equal to the top of the threshold and at a point tangent to 
the centerline of the threshold. 

3. The wall area above built-in tubs having installed shower heads and in shower 
compartments or stalls shall be constructed of smooth, non-corrosive, and non-absorbent, 
waterproof materials to a height not less than six feet above the floor level. Such walls 
shall form a watertight joint with each other and with the bathing tub, floor receptor, 
shower floor or base. 

4. The waste Outlet opening for individual shower compartments shall be two inches in 
diameter. 

(d) Shower Floors or Receptors . 

1 . Floors or receptors under shower compartments shall be laid on or be supported by 
a smooth and structurally sound base. 

2. Floors under shower compartments, other than those laid directly on the ground 
surface or where prefabricated shower base receptors have been provided, shall be lined 
and made watertight by the provision of suitable shower pans of durable Product- 
approved materials. 

3. Shower pans shall turn up on all sides at least above the finished threshold level. 

4. Shower pans shall be securely fastened to the waste outlet at the seepage entrance 
making a watertight joint between the pan and the outlet. 

5. Floor surfaces shall be constructed of smooth, non-corrosive, nonabsorbent, and 
waterproof materials. 



3/11/05 248 CMR -149 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



(e) Shower Controls . 

1. When a flow control valve or shower head is designed to completely shut-off and is 
installed on the outlet pipe from a shower control unit, check valves shall be provided in 
the hot and cold water supplies to the unit to prevent by-passing of hot or cold water. An 
exception to the requirement above is when Product-approved shower control units are 
designed to prevent bypassing. 

2. All showers, shower stalls, shower compartments, gang showers, and shower baths, 
either multiple or single, shall be equipped with an approved adjustable self-cleaning and 
draining shower head. 

3. The water supply to a shower head shall be supplied through a Product-approved 
individual thermostatic, pressure balancing or combination thermostatic/pressure 
balancing valve complying with ASSE 1016. The device shall conform to the following 
requirements: 

a. the device shall incorporate a design that limits the maximum deliverable 
temperature of hot water to 1 12°F; and 

b. the device shall be designed to prevent bypassing of water. 

4. Automatic Temperature Control Mixing Valves : 

a. A central type automatic temperature control mixing valve may be used in lieu 
of individual thermostatic, pressure balancing or combination thermostatic/pressure 
balancing valve complying with ASSE 1070, provided that the temperature control 
mixing valve limits the maximum temperature of the hot water supplied to individual 
shower controls to 1 12°F during all periods when showers are in use. 

b. A thermometer is required in the outlet piping of the automatic central control 
mixing valve for inspection and adjustment of temperature. 

. c. Check valves are required on the hot and cold water inlets to the automatic central, 
control mixing valve. 

d. The automatic temperature control mixing valve is a secondary control for hot 
water that is supplied to individual shower stations and is in addition to the primary 
controls used to maintain the water temperature in the domestic hot water system. 

e. When the temperature in the hot water supply piping to a shower stations is 
controlled by an automatic temperature control mixing valve, individual shower 
controls may be Product- approved two handle or single handle shower valves. 

f. All automatic temperature control mixing valve devices shall be adjusted by the . 
installing plumber, prior to a Final Inspection in accordance with (248 CMR 
l0.04(3)Ce). The device shall be set to deliver tempered water at a temperature not 
to exceed 110°Fto 112°F. 

(8) Food-waste Grinder Units . 

(a) Residential or Domestic Food-waste Grinder-waste Outlets . Domestic food-waste 
grinder units shall be connected to a drain of not less than I'/z inches in diameter. 

(b) Conmiercial Food-waste Grinder Outlets . 

1 . Commercial food-waste grinder units shall be connected to a drain of sufficient size 
to serve the unit, but in no case connected to a drain of less than two inches in diameter. 

2. Commercial food-waste-grinder units shall be connected and trapped separately from 
other fixtures or compartments. 

3. These grinders shall be separately connected to a waste stack or branch drain. 

(c) Water Supply Required . All food-waste grinder units shall be provided with an 
adequate supply of cold water from faucets at sufficient flow rate to insure proper 
functioning of the unit. 

(d) Commercial Food-waste Grinders Required . All establishments summarized in 
248 CMR 10.09(2)(a), (restaurants, cafeterias, hotels...) that are served by a municipal 
sanitary sewer and can seat 20 patrons or more shall incorporate food waste grinders. 

(9) Drinking Fountains . 

(a) Design and Construction . A drinking fountain shall conform to the listed ANSI standard 
in 248 CMR 10.06: Table!. 



3/1 1/05 248 CMR - 150 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



(b) Protection ofWater Supply . Stream projectors shall be assembled to provide an orifice 
elevation as specified by ANSI Air Gaps in Plumbing Systems and ANSI Backflow 
Preventers. See 248 CMR 10.06: Table 1. 

(10) Floor/Trough Drains , 
(a) Floor/Trough Drains . 

1 . Floor/Trough drains shall have integral or separate traps providing a minimum water 
seal of three inches. The Floor/Trough drain shall incorporate removable strainers. 

2. The Floor/Trough drain shall be constructed so that it can be readily cleaned, and the 
drain inlet shall be easily accessible at all times. 

3. Floor/Trough drains subject to backflow shall be provided with back water valves. 

4. Size of Floor/Trough Drains . Floor/Trough drains shall be of a size to serve 
efficiently the square foot floor area to be served or the purpose for which they are 
intended. The Floor/lVough drain outlet pipe shall not be less than two inches in nominal 
diameter. 

5. Proper Installation and Protection Against Loss of Trap Seal . 

a. The design and installation of floor drains and trough drains shall be at a grade 
to enable complete floor drainage from all directions. 

b. All floor drains and trough drains shall be installed with a, readily accessible 
automatic trap-priming device, except that floor drains or trough drains that will 
receive a continuous or semi-continuous discharge from other indirect waste 
fixture(s) pursuant to 248 CMR 10.12 may be allowed by the Inspector. 

6. Special Hazardous Wastes . Floor drains that may receive special hazardous waste 
shall comply with 248 CMR 10.13. 

(11) Dishwashing Machines . 

(a) Waste Discharge . 

1. Domestic . The waste discharge shall comply with 248 CMR 10.08(1 )(a)(2)(d). 

2. Corrunercial . Cormnercial dishwashing machines that discharge by gravity shall be 
indirectly connected, except when the machine is located above or within five feet of a 
trapped floor drain, the waste may be connected directly to the inlet side of a properly 
vented floor drain trap. 

3. Conunercial . Dishwashing machines thatincorporate drainage discharge by pumping 
shall discharge waste to the sanitary drainage system in accordance with the 
manufacturer's reconamendations. 

(b) Portable Dishwashers . Portable dishwashing machines (domestic) may discharge over 
the rim of a properly trapped and vented fixture. 

(12) Automatic Clothes Washing Machine . 

(a) Water Supply . The water supplies to clothes washers shall be protected against 
backflow by the use of an air gap or a back flow preventer. 

(b) Waste Discharge . 

1. Domestic Machines . 

a. The waste from a clothes washer shall discharge through an air break into a 
laundry utility sink or standpipe. 

b. The standpipe shall extend to a minimum height of 30 inches above the base of 
the machine and shall not be less than I'/a inches in diameter. 

2. Laundromats (CommerciaD . The minimum size of a trap and standpipe for 
commercial clothes washing machines shall be not less than two inches in diameter, and 
shall connect to a drain of sufficient size to receive the simultaneous discharge of 75% 
of all clothes washing machines connected thereto. 

(13) Multiple Type Lavatory (Wash SinkV Provided that hot and cold or tempered water for 
hand washing is available for each 20 inch interval of a multiple use lavatory sink, every 20 inch 
unit of usable length or circumference or of a straight-line or circular multiple use lavatory shall 
be considered equivalent to one lavatory as it affects the drainage and water supply piping sizes 
and fixture usage requirements. 



3/11/05 248 CMR -151 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



(14) Garbage/Trash Receptacle Washers . 

(a) Garbage/Trash receptacle washers shall be separately trapped and vented. 

(b) The fixture receiving the waste from garbage/trash receptacles shall be provided 
with a removable basket or strainer to prevent discharge of large particles into the 
buildmg drainage system. 

(c) Any water supply connection shall be protected against backflow by an air gap or 
Product-approved backflow prevention device. 

(15) Special Fixtures and Specialties . Baptisteries, ornamental and lily pools, aquaria, 
ornamental fountain basins, fish tanks and similar constructed decorative water monuments when 
provided with water supplies, shall be protected from back siphonage. 

(16) Sacrarium. 

a. The liquid discharge from a Sacrarium shall be conducted separately and directly to 
a dryweJI in the ground, and shall not be used for any other drainage purpose. 

b. In no case shall the waste from a Sacrarium be connected to the building storm 
drainage, or sanitary drainage waste and vent system. 

c. The waste from a Sacrarium shall not be trapped or vented. 

(17) Minimum Facilities for Dwellings . Whenever plumbing fixtures are installed, the 
minimum number of each type of fixture shall comply with the requirements of 105 CMR 
410.00; Minimum Standards of Fitness for Human Habitation (State Sanitary Code, Chapter 
II, and shall conform with 248 CMR 10.02(6)(b). 

(18) Minimum Facilities for Building Occupancy Other Than Residential . 

(a) Application of Standards and Establishing Occupancy . 

1. Applicability of Changes : the requirements set forth in 248 CMR 
10.10(18): Table I: Minimum Facilities for Building Occupancy shall apply only to 
plumbing system installation, alteration or extension projects in which the process of 
designing the plumbing work to be performed begins on or after June 3, 1994. 

2. When determining the number of plumbing fixtures after the population has been 
established by the authority having jurisdiction, should a fraction occur, round up to next 
fixture. 

(b) Classification of Places of Assembly . 

1. Assembly (Generan . 

a. All places in which alcoholic or non-alcoholic beverages ai'e sold, or offered for 
sale, to be consumed on the premises; any room or space used for public or private 
banquets, feasts, dances, socials, card parties, weddings or for lodge or meeting halls 
or rooms; skating rinks, gymnastics, public swimming pools, billiard, pool, bowling, 
and table tennis rooms; halls or rooms used for public or private catering purposes, 
funeral parlors, recreation rooms; broadcasting studios; private clubs and all other 
places of similar occupancy, shall be classified as general places of assembly. 

b. Toilet facilities for each sex shall be provided in the amount specified in 
248 CMR 1 0. 1 0( 1 8) : Table 1 for assembly. 

2. Assembly (Dedicated) . 

a. All places of worship, arenas, stadiums, theaters, cinemas, restaurants, pubs, and 
nightclubs shall be classified as dedicated places of assembly and toilet facilities for 
each sex male and female shall be provided in the amount specified in 248 CMR 
10.10(18): Table J for dedicated assembly. 

b. Where the capacity is more than 2,000 persons, the number of toilets for the first 
2,000 persons shall be calculated using the ratios in 248 CMR 10.10(18): Table I. 
For the number of persons in excess of 2,000, the number of toilets shall be 
calculated at ratio of one per 100 for women and one per 200 for men. 

c. In restaurants, pubs and nightclubs where the total combined number of 
employees and patrons that can be accommodated at any one time is less than 20 
individuals and the total gross space is less than 1,200 square feet, one unisex, 
handicapped accessible toilet facility for use by both employees and the patrons shall 
meet the minimum fixture requirements of 248 CMR. 



3/11/05 248 CMR -152 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.10: continued 



3. Nothing in 248 CMR 10.10(18)(b)2.a. through c. shall apply to single or multiple 
family dwellings, or to a place of incarceration or detention, a convent, or a monastery. 

4. Plumbing fixtures for employees shall be included in 248 CMR 10. 10(18): Table 1 
for this type of occupancy. 

5. When the occupancy ratio of 50% for each sex is not used to define fixture counts, 
the Inspector shall be notified in writing before construction begins, indicating the 
occupancy of each sex for the purpose of establishing fixture amounts. 

(c) Assembly (Places of Worship - Church. Synagogue etc.) . 

1 . In no case shall there be less than one toilet and one lavatoi-y provided for each sex 
to accommodate a congregation worship area. 

2. Refer to 248 CMR 10.10(15) and' 10.10(16) for baptistery and Sacrarium 
requirements. 

3. For places of worship, which also have a function hall/multi-purpose area, the fixture 
number requirements for the halls/areas shall be calculated separately. 

4. If sufficient fixtures are installed to accommodate the total occupancy for the worship 
area and the fixmres are located within 300 feet of toilet facilities in the same building 
the requirements of 248 CMR 10.10(18)(c)l. and 248 CMR 10.10(1 8)(c)3. shall not 
apply. 

(d) Bathing Beach Toilet Facilities (Public) . When the occupancy of a beach area can 
exceed 4,000, toilets for the capacity in excess of 4,000 shall be installed at the rate of one 
per 1,000 for women, and one per 2,000 for men. 

(e) Day Care Toilet Facilities . 

1 . Refer to 102 CMR 7.00: Standards for the Licensure or Approval of Group Day Care 
and School Age Child Care Programs (Office for Children), for requirements regarding 
plumbing fixtures for this type occupancy. 

2. Unisex toilet facilities (one toilet, and one lavatory) may be installed for children six 
years of age or younger. 248 CMR 10.10(18): Table 1 shall apply where more fixtures 
are required. 

(f) Police Station Lockup/Detention Area Facilities . 

1. A combination toilet and lavatory with a protective detention shroud shall be 
provided in each cell in where a person is detained for any part of a 24 hour day. 

2. The lavatoiy shall be connected to the hot and cold water distribution systems. 

3. Where individual toilet facilities are not required by 248 CMR 10.lO(18)(f)l., 
fixtures shall be installed at the rate listed in 248 CMR 10.10(18): Table J for this type 
occupancy. 

(g) Dormitory Toilet Facilities . 

1. Toilets in dormitory toilet facilities shall be of the elongated style and shall be 
equipped with solid plastic non-porous seats of the open front type, 

2. In a toilet facility that contains more than one toilet or a toilet and an urinal, each 
toilet and urinal shall be separated by walls or partitions that will provide privacy. 

3. Toilets, showers and lavatory facilities shall be accessible from within the building 
and shall be placed so that passing through any part of another dwelling unit or room is 
not required. 

4. One laundry utility sink shall be installed for each 50 persons. 

5. Toilet facilities, shower rooms and bathing rooms for males and females shall be 
separate and so designated. 

(h) Educational (School, College and University etc.) Toilet Facilities . 

1. Each toilet facility shall have at least one lavatory except as provided by 248 CMR 
I0.10(18)(h)2. 

2. In kindergarten or primary grades, unisex toilet facilities may be installed for children 
six years of age or younger. Lavatories may be installed in classroom areas or the toilet 
rooms. 248 CMR 10.10(18): Table 1 shall apply where more fixtures are required. 

3. In auditoriums and multipurpose rooms that will be used at any time for community 
service, toilet facilities shall be provided as follows: 

i. Women : one toilet for each 200 seats or majority fraction thereof 

ii. Men : one toilet for each 600 seats and one urinal for each 200 seats or majority 

fraction thereof. 



3/11/05 248 CMR -153 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



Women and men's toilet facilities shall be located within 300 feet. 

4. Separate toilet facilities shall be provided for teachers and other staff employees. 
These toilet facilities shall be in addition to the requirements of 248 CMR 
10.10(18): Table I, See Educational Use Group E (staff) for teacher occupancy toilet 
facility requirements. 

5. In addition to 248 CMR 10.10(18)(h) 4., there shall be separate toilet facilities for 
kitchen (staff) employees, which shall comply with the requirements of 248 CMR 
10.10(18)(i)l. through 3. and Table I, Educational Use Group E (staff) for kitchen 
employee toilet facility requirements. 

6. All secondary and post secondary schools that conduct sporting programs or physical 
activities on the school premises or grounds and include a gymnasium where the 
activities may be conducted shall provide separate men and women shower facilities to" 
accommodate the students. 

7. All schools, which incorporate vocational trade programs where students may happen 
to become unclean due to work activities, shall comply with 248 CMR 10.10(18)(h)6. 

8. Emergency Wash Stations ai'e required and shall be installed in the laboratory 
classrooms of schools, college's and universities where flammable liquids and open 
flame devices are used. See 248 CMR 10.13(1)(1) 

(i) Employee Toilet Facilities for (Non-industrial) Establishments . 

1. In each establishment where people are employed, there shall be separate toilet 
facilities for male and female employees. The toilet facilities shall be located in the 
tenant establishment and shall be plainly designated for male or females. 

2. Toilet facilities in establishments referred to in 248 CMR 10.10(18)(j)l. within two 
branch levels shall be acceptable. Toilet facilities shall not be required for mezzanines. 
See 248 CMR 10.03: Mezzanine. In no case may a toilet facility be located more than 
300 feet in developed direct distance away from the regular place of daily work activity 
of any person for whose use it is required. Except where elevators accessible to the 
employees are provided. 

3. Unisex toilet facilities may be allowed if they meet the requirements of 248 CMR 
10.l0(18)(m). 

4. In business or commercial establishments (except industrial) that contain less than 
1 ,200 gross square feet of floor area or do not have reasonable access (within 300 feet 
and on the same floor) to core or common toilet facilities, one toilet room located within 
the establishment provided with the number of fixtures according to the standard set forth 
in 248 CMR 10.10(18): Table J for employee facilities, shall meet the minimum 
requirement. 

5. In every business or commercial establishment where only one person is employed 
or works, there shall be one toilet and one lavatory for use by the tenant provided in the 
establishinent or a core toilet facility shall be located within 300 feet of the tenant 
establishment. Core or common facilities (defined in 248 CMR 10. 10(1 8)(i)4.), located 
on the same floor as the establishment being serviced and having separate designated 
male and female toilet facilities may be used to meet this requirement. The number of 
fixtures in the core or common toilet facilities shall be in accordance with 248 CMR 
10.10(18): Table 1 for employee toilet facilities (non-industrial). 

6. Where core toilet facilities are peiTnitted and are in compliance with the occupancy 
requirements as outlined in 248 CMR 10.10(18): Table 1 additional designated (male 
and female) toilet facilities shall be permitted within the establishment. These fixtures 
shall not be credited towards the fixture count requirements of 248 CMR 
10.10(18): Table 1. 

(j) Employee Toilet Facilities for dndustrial) Buildings . 

1. In every industrial establishment, all toilet facilities, where such toilet facilities 
include the number and type of plumbing fixtures, the floors, walls, windows, ceilings, 
lighting, ventilation, doors, partitions, design and location of the toilet facilities, shall 
comply with 454 CMR 2.00, Toilets in Industrial Establishments. 

2. Separate toilet facilities shall be provided for each sex and shall be plainly so 
designated male and female. See 248 CMR 10.03: Mezzanine. 



3/11/05 248 CMR -154 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 




3. The number of toilets and lavatories shall be provided within reasonable access (as 
defined in 248 CMR 10.l0(18)(j)4.) and in accordance with 248 CMR 
10.10(18): Table 1 for industrial facilities. 

4. Distance of direct access for industrial establishments requires that; in no case may 
a toilet facility be located more than 300 feet in developed direct distance away from the 
regular place of daily work activity of any persons for whose use it was designed. Except 
where service elevators, accessible to the employees, are provided. 

5. Each 20 linear-inches, or 18-inch circumference-inches of usable sink access will be 
considered the equivalent of one lavatory. 

6. In industries and manufacturing facilities with departments where there is excessive 
exposure to substances or liquids or where the work performed may create dust and grit 
conditions, one lavatory sink may be required for every five persons and in all cases, a 
potable water supply of hot and cold water shall be provided. 

(k) Medical and Health Care Building Toilet Facilities . 

1. In all medical and health care buildings there shall be separate designated toilet 
facilities on each floor for male and female patients and visitors. 

2. The toilet facilities may be located in a. common or core area on each floor so long 
as the toilet facilities are within 300 feet of all offices. 

3. Accessibility to the toilet facilities shall be direct; it shall not require going from one 
medical office through another for access to the toilet facilities. 

4. Handicap toilet facilities ai-e required on each floor. 

5. A minimum of one drinking fountain shall be installed for each set of toilet facilities. 
(1) Covered Malls Toilet Facilities . 

1 . In all covered malls there shall be separate designated public toilet facilities for male 
and females. These toilet facilities shall be centrally located in the common core area on 
each floor. 

2. These facilities are in addition to the requirements of 248 CMR 10.10(18)(i) 
regarding toilet facilities for male and female employees. 

3. When the occupancy exceeds 9,000, toilets shall be installed at the rate of one per 
1,500 for women and one per 3,000 for men. Lavatories shall be installed as lisied'in 
248 CMR 10.10(18): TaWei. 

(m) Handicap Toilet Facility Requirement . Facility for the physically handicapped person: 

1. Plumbing fixtures shall be installed in conformance with 521 CMR 30.0: Public 
Toilets (for fixture dimension requirements only), 

2. When pubhc toilet facilities are to be installed, handicap plumbing fixtures shall 
comply with the requirements of 248 CMR 10.10(l8)(m). 

3. Unisex handicap toilet facilities may be allowed by the Board by the variance process 
as outlined in 248 CMR 3.04(2): 

a. A variance is not required if the fixtures in an existing or proposed men's and 
women's toilet facility and the fixtures in a unisex handicapped toilet facility meet 
theminimumfixturerequirementsof 248 CMR 10.10(18): Table 1. A unisex toilet 
may be counted only one time toward the total minimum fixture requirements. 

b. These toilet facilities shall be kept clear of obstructions at all times in accordance 
with 105 CMR. 

4. Wherever drinking fountains are provided, a drinking fountain shall accessible to the 
physically impaired. 

5. Additional sanitary facilities for the physically impaired; handicap toilet stalls placed 
within a fully compliant 248 CMR. toilet facility may also provide an additional 
accessible handicap lavatory within the toilet stall area. The lavatory placement shall 
comply with the requirements of 52 1 CMR. 

(n) Toilet Facilities General . 

1 . Toilet facilities accessible to the public which have two or more toilets or urinals, or 
two or more thereof in any combination, shall provide a floor drain equipped with an 
automatic trap priming device and a valved hose connection equipped with a backflow 
preventer. The hose connection is for the purpose of floor cleaning in the toilet facility. 

2. Roor drains shall be installed in the vicinity of the urinal(s) and placed at a grade to 
enable floor drainage to the floor drain from all directions. 



3/11/05 248 CMR -155 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



3. Toilets for public use shall be of the elongated style and the seats shall be solid 
plastic, non-porous and of the open front type. Refer to 248 CMR 10. 10(5)(a) through 
(e). 

4. When a urina](s) is provided in a toilet facility the floor areas one foot in front of the 
urinal lip and one foot on each side of the urinal and the wall areas to four feet above the 
finished floor surface, shall be protected by non-absorbent building products and 
material. Wood and fiber boards are prohibited in these areas. Refer to 248 CMR 
10.10(7)(c). 

5. In a toilet facility with more than one toilet, or with a toilet and a urinal, each toilet 
shall be enclosed. Each urinal shall be side shielded for privacy. 

6. When two or more urinals are required, a shield shall be provided between urinals, 
(o) Laundries . Laundry facilities requirements. A washing machine connection that 
consists of a piping arrangement that includes a cold water supply, hot water supply and a 
sufficient drain connection shall be provided in conformance with the following: 

1. One and Two Family Dwelling : At least one washing machine connection. 

2. Multiple Dwellings : 

a! Non-elderiv Housing : In multiple dwellings that are not restricted to the elderly, 
one washing machine connection for every ten dwelling units, or fraction thereof. 

b. Elderly Housing : In housing that is restricted to the elderly, one washing machine 
connection for every 20 dwelling units or faction thereof. 

c. The washing machine connection shall be located so that each occupant in the 
dwelling has access to the washing machine that may be affixed to the washing 
machine connection. 

(p) Urinals . 

1. Urinals may be substituted for toilets where indicated in 248 CMR 10.10(19): Table 
1 are listed by percentage. 

2. Urinals listed for elementary, secondary, post secondary and industrial 
factory/warehouse are in addition to the toilets required. 

3. When urinals are used at least one shall be set for handicapped use. 

(q) Bathroom Group Defined , a bathroom group shall consist of one bath tub or shower 
stall, one toilet, and one lavatory. 




3/11/05 248 CMR -156 




10.10: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Table 1: Minimum Facilities For Building Occupancy. 
(*Optional by owner) 



Building Clarification 


Use 
Group 


Toilets 


Urinals 
Males 


Lavatories 
Each Sex 


Drinking 
Fountain 


Bath/ 
Show. 


Other 
Fixtures 


Pertinent 

Regulations. 

248 CMR 

10.10(19) 


Females 


Males 


Theaters 


A-1 


1 per 30 


1 per 60 


50% 


1 per 100 


1 per 1000 




1 service 
sink per 
floor 


(b).(i)l.,(m), 
(n). (p) 


Nightclubs, Pubs 


A-2 


1 per 30 


1 per 50 


50% 


1 per 75 








(b). (m), (n), (p) 


Restaurants 


A-3 


1 per 30 


1 per 60 


50% 


1 per 200 








(b), (m), (n), (p) 


Hall, Museums, Libraries Etc. 


A-3 


1 per 50 


1 per 100 


50% 


1 per 200 








(b),(i)l..(m). 
(n), (p) 


Coliseums, Aj-enas 


A-3 


1 per 30 


1 per 60 


50% 


1 per 150 








(b),(i)l.,(m). 
(n). (p) 


House of Worship 


A-4 


1 per 50 


1 per 100 


50% 


I per 200 








(b). (c), (m), 
(n). (p) 


Stadiums Etc. 


A-5 


1 per 30 


1 per 60 


50% 


1 per 150 








(i)l.,(m),(n), 
(P) 


Pool 


A-5 


1 per 40 
bathers 


1 per 40 
bathers 


33% 


1 per 60 
bathers 


At least 
one source 


1 for 
every 40 
bathers 




(i)l.,(ni),(n), 
(p). See 105 
CMR for bather 
load. 


Bathing (Public Beaches) 




1 per 200 


1 per 500 


33% 


1 per 1000 




1 per 
1000 


1 Service 
Sink 


(d). (m). (n), (p) 


Day Care Facility (Child) 


E-I-3 


1 per 20 


1 per 20 




1 per 20 






I Service 
Sink 


(e), (tn), (n) 


(Staff) 


N/A 


1 per 20 


I per 25 


33% 


1 per 40 








(i), (m), (n). (p) 


Detention Facility (Detainee) 


1-3 


1 per 6 


1 per 8 


33% 


1 per 6 




1 per 8 




(f). (m). (p) 


(Staff) 


N/A 


1 per 20 


1 per 25 


33% 


1 per 40 








(i), (m), (n), (p) 


Dwellings (Single) 


R 


One Bathroom Group and One Kitchen Sink 




(0), (q) 


(Multiple) 


R 


One Bathroom Group and One Kitchen Sink per Unit 




(0). (q) 


(Hotel/Motel) 


R 


One Bathroom Group per Unit 




(m). (q) 


(Dormitories) 


R-2 


1 per 6 


1 per 8 


33% 


1 per 8 




1 per 8 


1 Service 
Sink per 
Floor 


(g), (m), (n). (p) 


Educational (Kindergarten) 


E 


1 per 20 


1 per 20 




1 per 20 


1 per 75 




1 Service 
Sink Per 
Floor 


(h), (i). (m). (n), 
(P) 


(Elementary) 


E 


1 per 30 


1 per 60 


1 per 60 


1 per 60 


1 per 75 






(Secondary) 


E 


1 per 30 


1 per 90 


I per 90 


1 per 90 


1 per 75 






(Post Secondary) 


E 


1 per 90 


1 per 180 


1 per 180 


1 per 1 80 


1 per 75 






StafO 


E 


1 per 20 


1 per 25 


33% 


I per 40 








Employee (Non-Industrial)* 




1 per 20 


1 per 25 


33% 


1 per 40 




1 per 15* 


1 Service 
Sink per 
Floor 


(i), (m), (n), (p) 



3/11/05 



248 CMR - 157 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.10: continued 



Building Clarification 


Use 
Group 


Toilets 


Urinals 
Males 


Lavatories 
Each Sex 


Drinking 
Fountain 


Bath/ 
Show. 


OUier 
Fixtures 


Pertinent 

Regulations. 

248 CMR 

10.10(19) 


Females 


Males 


Employee (Industrial Factory/ 


F 


1 per 15 


1 per 20 


1 per 40 


1 per 30 




1 per 15 




(j), (m), (n), (p) 


Warehouse and Similar Usage 




















Institution 


















Hospital (Private/Senii) 


I 


1 per Room 

Nursing Homes: 
1 toilet and 1 
lavatory with direct 
access from each 
bedroom (shared 
by 8 beds max), 
can be unisex. 




1 per Room 


1 Per each 
set of rest- 
rooms 


1 per 15 
(in ICU) 

1 per 12 

(inpatient 

facilities 

other 

than 

ICU) 

1 per 6 
patients 
(Psychi- 
atric 
Hosp.) 

1 per 8 
(Rehab 
facility) 


1 Service 
Sink 
Per 
Floor 


(i). (m), (n) 


Nursing Homes (Ward) 




1 per 8 


1 per 10 


33% 


1 per 10 




1 per 15 


1 Service 


(i), (m), (n). (p) 


Malls (Covered) 


M 


I per 750 


I per 


50% 


1 per 2000 


1 per 2000 




(i), (1), (m), (n), 








1500 












(P) 


Medical/Health Care Building 


B 


1 per 45 


1 per 55 


50% 


1 per 200 


1 Per each 


1 per 


(i), (k). (m), (n). 














set of rest- 


each set 


Sink 


(P) 














rooms 


of rest- 
rooms 


Per 




Office Buildings 


B 


1 per 20 


1 per 25 


33% 


1 per 50 


1 per Floor 




(i). (m). (n). (p) 


Retail (Mercantile) 


M 


1 per 20 


1 per 20 


33% 


1 per 40 






Floor 


(i), (m), (n), (p) 


Waiting Rooms (Airports, 


A 


1 per 35 


1 per 75 


50% 


1 per 200 . 


1 per 500 




(b). (m), (n). (p) 


Railroad and Bus Stations) 





















( 1 9) Funeral Establishment Preparation Rooms . Funeral establishment preparation rooms shall 
comply with the provisions of 239 CMR 3.07. 

(a) The preparation room of a Funeral establishment shall be provided with a floor drain and 
flooring that is compliant with 239 CMR 3.07(3). 

(b) The preparation room shall include a flushing rim sink and the preparation room shall 
be protected by proper backflow devices. 

(c) An additional reduced pressure zone backflow preventer shall be installed on the water 
distribution system to the building at the outlet side of the meter or main control valve. 

(d) Emergency Wash Stations shall be installed and be compliant with the provisions of 
239 CMR. 



3/11/05 



248 CMR - 158 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.11: Hangers and Supports 




(1) General . Piping shall "be installed with provisions, when necessary, for expansion, 
contraction or structural settlement. 

(2) Material . Hangers, anchors, and supports shall be of metal or other material of sufficient 
strength to support the piping and its contents, except that piers may be of concrete, brick, or 
other Product-Approved material. 

(3) Attachment to Building . Hangers and anchors shall be securely attached to the building at 
sufficiently close intervals to support the piping and its contents. 

(4) Intervals of Supports . 

(a) Vertical Piping . Vertical pipe of the following materials shall be supported at not more 
than the following distance intervals: 

1. Cast iron soil pipe -- at base and at each story height. 

2. Threaded pipe (SPS) -- every other story height. 

3. Copper tubing - at each story height but not more than ten-foot intervals. 

4. Plastic (PVC and ABS) pipe at each story height, but not more than ten foot intervals 
and elsewhere as required to maintain proper alignment. 

5. Stainless steel tubing at each story height, but not more than ten foot intervals. 

6. Aluminum DWV — at each height, or at intervals not exceeding ten feet. 

(b) Horizontal Piping . Horizontal pipe of the following materials shall be supported at not 
more than the following distance intervals. 

1. Cast Iron Soil Pipe ~ five foot intervals except that where ten-foot lengths of cast 
iron soil pipe are used, ten-foot intervals between supports are acceptable. 

2. Threaded pipe — 12 foot intervals. 

3. Copper tubing (114 inches or less) ~ six-foot intervals. 

4. Copper tubing (IVi inches or over) - ten-foot intervals. 

5. Plastic (PVC and ABS) pipe (I'/a inches or less) - three-foot intervals, (two inches 
or over) — four-foot intervals, (Refer to 248 CMR 10.06(2)(o) and 248 CMR 
10.06(2)(p). 

6. Cross-linked Polyethylene (PEX) Tubing shall meet the following requirements: 

a. the maximum hanger spacing is to be 32-inch intervals for all sizes; 

b. the tubing is to be secured rigidly to studs or joist with hangers and supports that 
enable adequate expansion and ease of movement; 

c. Plumber shall consult the individual manufacturers recommendations for other 
specific installation methods. 

7. Stainless steel tubing at each story height, but not more than ten foot intervals. 

8. Stainless Steel Tubing (114 inches or less) " six-foot intervals. 

9. Stainless Steel Tubing (IVz inches or over) — ten-foot intervals. 

10. Aluminum DWV pipe - ten foot intervals. 

1 1 . CPVC pipe sizes one inch or less shall be supported at three-foot intervals and sizes 
VA and greater shall be supported at four-foot intervals. 

(5) Base of Stacks . 

(a) Bases of cast iron stacks shall be supported on concrete, brick laid in cement mortar, 
metal brackets attached to the building, or by other methods approved by the Inspector. 

(b) Other piping material shall be so anchored as to take the load off the stack at the base. 

(6) Piping in Masonry . 

(a) Piping which is installed in and parallel to the faces of reinforced concrete or masonry 
walls shall be installed in adequately sized pipe space chases formed in the concrete or 
masonry walls. 

(b) The pipe chase spaces shall be accessible, or the piping shall be otherwise installed free 
of the reinforced concrete or masonry. 



3/11/05 248 CMR- 159 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.12: Indirect Waste Piping 



(1) Indirect Wastes Required . 

(a) Food Handling Establishments . 

1. Food handling establishments engaged in the storage, preparation, selling, sei-ving, 
processing, or in any manner the handling of food shall provide: indirect waste piping for 
refrigerators, refrigerator coils, walk-in freezers or coolers, ice compartments, ice making 
machines, steam kettles, steam tables, potato peelers, egg boilers, coffee urns, coffee, 
soda and beverage trays and all similar types of enclosed equipment. 

2. Dishwashing pre-rinse sinks installed in combination with a commercial dishwasher, 
pot sinks, scullery sinks and other sinks are excluded from the indirect waste requirement 
and shall be directly connected to the sanitary drainage system. 

3. Single compartment culinary/produce sinks or individual culinary/produce sink 
compartments specifically designated and Habeled for produce preparation shall convey 
the waste from these fixtures or compartments indirectly to a properly trapped and vented 
floor sink. The produce preparation compartment shall be authorized and approved by 
the Local Board of Health or other designated municipal health official. 

4. The produce preparation label must be a laminated sign with letters two-inches in 
height that reads: "This Compartment ONLY Is Designated For Produce Preparation." 

5. All indirect waste shall discharge through an air gap or air break into a properly 
trapped and vented receptor except that an air gap is required where the indirect waste 
pipe may be under vacuum (less than atmospheric pressure). 

(b) Connections from Water Distributions System . Indirect waste connections shall be 
provided for drains, overflows, or relief lines from the water distribution system by means 
of an air gap. 

(c) Sterilizers . Appliances, devices, or apparatus such as stills, sterilizers and similar 
equipment requiring waste connections and used for sterile materials shall be indirectly 
connected by means of an air gap. 

(d) Drips or Drainage Outlets . Appliances, devices or apparatus not regularly classed as 
plumbing fixtures but which have drips or drainage outlets, may be drained by indirect waste 
pipes discharging into an open receptacle through either an air gap or air break. 

(e) Clear Water Wastes . 

1 . Expansion tanks, fire sprinkler systems, air conditioning equipment, drip or overflow 
pans, or similar devices that waste clear water only, shall discharge waste into the 
building storm drainage system. The clear water waste shall discharge through an 
indirect waste by means of an air gap, except: 

2. The waste discharge from safe waste pans serving water heaters or hot water storage 
tanks is exempt from this requirement and may discharge to a properly trapped and 
vented fixture by means of an air gap to the sanitai7 drainage system. 

3. Clear water condensate waste that is produced in cumulative amounts of 12.5 gallons 
per hour or 300 gallons per day or less in buildings by air conditioning equipment, air 
compressor blow-down dischai-ge (free of petroleum hydrocarbons) or other similar 
apparatus or appliances may be discharged to the sanitary drainage system in accordance 
with 248 CMR 10.12(l)(a)5. The clear water waste requirement is not withstanding any 
local ordinance, by-law, rule or regulation to the contrary. 

(f) Swimming Pools . 

1. Pipes that convey waste water from swimming or wading pools including pool 
drainage, back wash from filters, water from scum gutter drains or floor drains which 
serve walks around pools, shall be installed as an indirect waste. 

2. Circulation pumps may be utilized to lift waste water when the indirect waste line is 
below the sewer grade. 

3. The indirect waste shall discharge into the storm drainage system through an air gap. 

4. All indirect waste from swimming pools shall be free of chlorine prior to discharge 
to the storm drainage system. 

(g) Pressure Tanks. Boilers and Relief Valves . The drains from pressure tanks, boilers, 
relief valves and similar equipment when connected to the storm drainage system shall 
discharge through an indirect waste by means of an air gap. 



3/11/05 248 CMR -160 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 




10.12: continued 



(h) Safe Waste Required . 

1 . A safe waste pan shall be installed under a water heater or hot water storage tank that 
is installed in a position elevated above any occupied space. 

2. The safe waste pan shall be installed under water heaters and hot water storage tanks 
where there is occupancy below and shall be piped indirectly to a properly trapped and 
vented fixture. 

3. The Minimum size waste pipe is to be IVi-inch pipe. 

4. Where floor drains and other acceptable points of indirect discharge are installed, no 
safe waste shall be required. 

(i) Safe Waste Pans . 

1. Safe waste pans shall be at least two inches deep and have a minimum clearance of 
two inches around the base of the hot water storage tanks. 

2. Safe waste pans shall be installed for hot water storage tanks that are six gallons in 
capacity or larger. 5eg 248 CMR 10.22: F/gure y-i^. 

(j) Materials for the Discharge Piping of Safe Waste Pans . Materials shall comply with 
materials covered under 248 CMR 1 0.06 relating to commercial and residential installations. 

(2) Air Gap or Air Break Required . All indirect waste piping shall discharge into the building 
sanitary or storm drainage system through an air gap or air break, as set forth in 248 CMR 
10.l2(l)(a)5. and in no instance shall the indirect waste be trapped ahead of the air gap or air 
break. 

(a) Methods of Providing an Air Gap . The air gap between the indirect waste and the 
building sanitary or storm drainage system shall be at least twice the effective diameter of 
the drain served and shall be provided by one of the following methods: 

1. To a Receptor : 

a. Extend the indirect waste pipe to an open, accessible individual waste sink, floor 
drain, or other fixture which is properly trapped and vented. 

b. The indirect waste shall terminate a sufficient distance above the flood level rim 
of the receiving fixture to provide the required air gap, and shall be installed in 
accordance with 248 CMR 10.00. 

2. To the Inlet Side of Trap : Provide an air gap in the drain connection on the inlet side 
of the trap which receives the waste from the indirect waste. 

(b) Methods of Providing an Air Break . When an air break is required between the indirect 
waste and the building sanitary or storm drainage system, the distance to which the outlet of 
the indirect waste pipe extends below the flood level rim of the receptacle into which it is 
discharging shall be prescribed in 248 CMR 10.00. 

(3) Receptors or Sumps . 

(a) Installation . Indirect waste receptors and sumps serving indirect waste pipes shall not 
be installed in toilet facilities or in any location that is an inaccessible or unventilated space 
such as a closet, storeroom or crawl space. 

(b) Cleanout Location . If the indirect waste receptor is set below floor level, it shall be 
equipped with a running trap adjacent thereto with the trap cleanout brought level with the 
floor. 

(c) Strainers and Baskets . Every indirect waste receptor shall be equipped with a readily 
removable metal basket over which all indirect waste pipes shall discharge, or the indirect 
waste receptor outlet shall be equipped with a beehive strainer not less than four inches in 
height. 

(d) Splashing to be Prevented . All plumbing receptors receiving the discharge of indirect 
waste pipes, shall be of a design and capacity so as to prevent splashing or flooding of the 
adjacent area. 

(e) Domestic or Culinary Fixture Prohibited as Receptors . No plumbing fixture which is 
used for domestic or culinary purposes shall be used to receive the discharge of an indirect 
waste pipe, except that in a residence a kitchen sink is acceptable for use as a receptor for 
dishwashers and portable clothes washing machines. 

(f) The Stand Pipe Receptors . The stand pipe receptor for an automatic clothes washing 
machine shall be installed in one of the following ways: 



3/11/05 248 CMR. 161 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 



10.12: continued 



1. The stand pipe receptor sliall be individually trapped and vented. 

2. The stand pipe shall be no more than 30 inches nor less than 18 inches above its trap 
and in no case shall the trap be installed below the floor. 

3. The stand pipe receptor shall be installed in the cover of a floor drain provided that 
the cover is properly tapped to receive the stand pipe. 

4. The floor drain or trench drain shall be sized based on the discharge rate of the 
automatic clothes washer. 

(4) Condenser Sumps . 

(a) No steam condenser waste pipe shall directly connect to any part of a sanitary or storm 
drainage system, nor shall any water above 150°F be discharged into any part of a sanitary 
or storm drainage system. 

(b) Steam condenser piping may require temperature control by discharging to an approved 
boiler blow-off tank. Steam condenser piping shall be connected by dischai-ging into an 
indirect waste receptor connected to the sanitary drainage system. 

(5) Installation of Indirect Waste Piping . 

(a) Accessibility . Indirect waste piping shall be installed so as to enable ready access for 
flushing, cleaning, or replacement. 

(b) Material. Slope. Sizing, and Approval . 

1 . The piping material to be used, its size and the slope at which it is installed shall meet 
the requirements of 248 CMR 10.00. 

2. Any fixture or piece of equipment to be indirectly wasted that has a waste outlet 
smaller than VA inches in diameter shall be connected to an indirect waste pipe one size 
larger than said outlet. 

(c) Indirect Waste Piping Described . 

1 . Individual Indirect Waste . An indirect waste which connects to one waste outlet and 
extends to the receiver shall be classified as an Individual Indirect Waste. 

2. Indirect Waste Main . An indirect waste which connects to more than one waste 
outlet and extends to the receiver shall be classified as an Indirect Waste Main. 

3 . Indirect Waste Branch Main . A branch from an indirect waste main which connects 
to more than one waste outlet shall be classified. as an Indirect Waste Branch Main. 

4. Indirect Waste Branch . An indirect waste which connects to one waste outlet and 
extends to either an indirect waste main or an indirect waste branch main shall be 
classified as an Indirect Waste Branch. 

(d) Traps . 

1 . Prohibited . A trap shall not be installed on an indirect waste main or on an indirect 
waste branch main. 

2. Where Allowed . On any indirect waste branch or individual indirect waste where it 
is necessary or desirable to prevent the flow of air from inside the indirect waste piping 
through the indirect waste branch. 

(e) Air Circulation Through Indirect Waste Piping . 

1 . Provision shall be made so that air can circulate freely through an individual indirect 
waste, an indirect waste main or an indirect waste branch main. 

2. Only an indirect waste branch may be trapped and when the trapping of indirect waste 
branch or branches will interfere with the free flow of air through the indirect waste main 
or branch main, additional ventilation outlets shall be provided to enable the free flow 
of air. 

3. An indirect waste stack receiving the discharge from fixtures on two or more floors 
shall be extended to the outer air as required for a stack vent. 

(6) Multiple Occupancy . 

(a) When a system of indirect waste piping serves buildings or premises having more than 
one tenant occupancy, it shall be designated as a "Central Indirect Waste System" and 
connection to it from separate tenant occupancies shall be designated as "Separate Indirect 
Waste Systems." 



3/11/05 248 CMR- 162 





248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.12: continued 

(b) Separate indirect waste systems shall be connected to "Central Indirect Waste Systems" 
as follows: 

1 . The indirect waste branch to a separate occupancy shall be trapped, and this trap shall 
serve as a secondary indirect waste receiver for the separate indirect waste system. 

2. The indirect waste branch to a separate occupancy may be from a horizontal indirect 
waste main or branch main, or from an indirect waste stack. 

(c) Secondary Indirect Waste Receivers . 

1 . Traps serving secondary indirect waste receivers shall be protected from siphonage 
by adequate individual battery of stack vents. 

2. Vents on indirect waste piping systems shall not be connected to the vents of any 
other piping system but shall be extended separately to the outer air as required for stack 
vents. 

10.13: Piping and Treatment of Special Hazardous Wastes 

(1) General . 

(a) In no case shall special hazardous wastes discharge into the plumbing system without 
being thoroughly diluted, neutralized, or treated by passing through a properly constructed 
and acceptable diluting or neutraUzing device. 

(b) The required diluting or neutralizing device shall be automatically provided with a 
sufficient intake of diluting water or neutralizing medium so as to make its contents 
non-injurious before being discharged into the drainage system. 

(c) All plans and specifications for special hazardous waste piping and treatment systems 
shall be prepared by a registered professional engineer and shall be submitted to the local 
Inspector. 

(d) Systems requiring special consideration by the engineer are those handling organisms 
containing recombinant DNA molecules, radioactive, nuclear, solvents and perchloric 
wastes. 

(e) When required, the plans, specifications, and other pertinent data, as requested, shall be 
• submitted by the designer to the Department of Environmental Protection (DEP) or other 

authorities for their review and approval. 

(f) Permits shall be applied for on the basis of plans approved under 248 CMR 10.13(l)(c) 
and inspections shall be conducted for the work described in 248 CMR 10. 13 in accordance 
with the requirements noted in 248 CMR 10.13. 

(g) All special hazardous wastes shall be conveyed in separate piping systems 

(h) 248 CMR 10.13 shall include, but shall not be limited to, all special hazardous wastes 

such as organisms containing recombinant DNA molecules, chemical, nuclear, radioactive, 

deionized liquids, acids, perchloric, solvents and alkalines from laboratories and industrial 

activities. 

(i) Nuclear or radioactive waste treatment and/or disposal shall conform to the standards of 

the Nuclear Regulatory Conunission, N.R.C. 

(j) Color Marking requirements: 

1. Lines conveying special hazardous wastes shall be painted yellow. 

2. This requirement may be met by painting three inch wide bands at intervals of not 
more than 25 feet and at points where piping passes through walls, floors and roofs, 
in which case the bands shall be applied to the piping on both sides of the walls and 
both above and below the floor or roof, 

3. Snap-on bands marked "special hazardous wastes" may be used and spaced as 
described herein for painted bands. 

4. Points of outlet for special hazardous wastes shall also be color-coded yellow, 
(k) Special hazardous waste of material treatment and/or disposal shall be conducted in 
conformance with 310 CMR 30.00: /ir(2Z(3r(io«j Wsj/i? (DEP) and local bylaws. 

(1) Emergency Wash Systems shall meet the following requirements: . 

1. The systems shall be required in every school, college, university, or building 
laboratory newly constmcted or renovated, or any room used for similar purposes 
wherein: 

a. corrosive or flammable liquids are handled; 

b. chemicals are stored or used; or 



3/11/05 248 CMR -163 



10.13: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



c. where open flame devices are used. 

2. The systems shall include Drench/Deluge Showers, Hand Held Body/Face washers 
and Deck Mounted Drench Hoses. 

3. The permanently mounted showers shall be located as close to the main door of the 
laboratory as possible (to provide, escape route), but shall not be located greater than 50 
feet from an experimental area. 

4. The permanently mounted shower shall be capable of discharging a continuous spray 
at a rate of 30 Gallons Per Minute. 

5. The systems shall be tempered to between 70°F and 90°F and be installed in a 
manner that prevents the stagnation of water in the piping that supplies permanently 
mounted showers and face/eye wash stations. 

6. An exception to the tempered water requirement is: in existing buildings where 
tempered water is inaccessible, cold potable water shall be permitted with prior 
permission of the fire prevention safety officer and Inspector. 

7. Existing laboratories shall be compliant with the most recent provisions of 527 CMR 
10.02(2): Fire Extinguishers from the Board of Fire Prevention Regulations. 



SECONDARY (optional) 
All items 1 - 8 Primary 
Poly-Vinyl Chloride (PVC) 



(2) Product-approved Materials: Fixtures and Piping Systems . 

(a) List of Fixture Materials . 

PRIMARY 

1. High silicon (14.5% cast iron) A. 

2. Polypropylene B 

3. Polyethylene 

4. Glass 

5. Chemical stoneware 

6. Stainless Steel Type #316-18-8 

7. Chemical resistant monolith epoxy resins 

8. Polyvinylidene Fluoride(PVDF) 

(b) All materials listed in 248 CMR 10. 13(2)(a) shall be installed and joined in accordance 
with the manufacturer's recommendation and 248 CMR 10. 11. 

(c) Pipes shall be furnished in straight lengths and each length shall be marked with the 
manufacturer's name and the type of material. 

(d) For applicable material standard, refer to 248 CMR 10.06. 

(3) Installation Methods for Special Hazardous-waste Piping : Installation for special 
Hazardous-waste piping shall conform to 248 CMR 10.13(3): Tables 1 and 2: 

248 CMR 10.13(3): TABLE 1 
PIPE AND FITTINGS PRIMARY 




Materials 


Joining Methods 


Above 
Ground 


Below 
Ground 


High Silicon cast iron 


Acid Resistant Packing with caulked 
lead joint or Mechanical Clamp 


Yes 


Yes 


""'Glass Pipe 


Mechanical Clamp 


Yes 


Yes 
(a)(c) 


Polypropylene Sch. 40 or 80 


Heat Fusion 


Yes 
(b)(e) 


Yes 
(e) 


Polypropylene Sch. 40 or 80 


Mechanical Joints Clamp or Flange 


Yes 
(b)(d)(e) 


Yes 
(c)(e) 


Polyethylene 


Heat Fusion 


Yes 
(b)(e) 


Yes 
(e) 


Polyvinylidene 


Heat Fusion 


Yes 
(b)(d) 


Yes 


Polyvinylidene 


Mechanical Joints 


Yes 
(b)(d) 


No 



3/11/05 



248 CMR -164 




10.13: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



(a) Buried glass pipe shall be sleeved with rigid foam casing. 

(b) Shall be flame retardant above ground. 

(c) Only stainless steel mechanical joint clamps or heat fusion joining method shall be used 
underground. 

(d) Flanges may be used above ground with proper gasket material for corrosive resistance 
to the waste carried and compatibility with the piping material. 

(e) I.P.S. threaded joints may be used on schedule 80 polypropylene, polyethylene. 

248 CMR 10.13(3): TABLE! 
PIPE AND FITTINGS SECONDARY 



Material 


Joining Methods 


Above 
Ground 


Below 
Ground 


a. All items listed above for primary 


all items listed above for primary 


Yes 


Yes 


b. Poly Vinyl Chloride 


Injection Bonding, Solvent cement, 
Approved mechanical joints 


Yes 


Yes 




(3) Vents Serving Special Hazardous Wastes . Vent pipes shall not be connected to vents of the 
sanitary system but shall be extended through the roof with acid resistant pipe vents from 
biomedical facilities and shall be designed in accordance with the NIH guidelines. 

(4) The Design and Installation of New Special Hazardous Waste Systems Including Additions. 
Renovations, Alterations or Revisions To Existing Systems . 

(a) The owner shall submit a notarized letter stating the materials to be disposed of, or 
discharged into the special hazardous waste system. This letter shall be attached to the plans 
submitted per the requirements in 248 CMR 10.13(1), and will be the basis of the engineer's 
design. 

(b) The special hazardous waste system receiving the dischai-ge of corrosive liquids, 
regardless of the size or number of fixtures, shall be installed separately from the other parts 
of the building plumbing system. 

(c) The waste shall terminate at a point ten feet beyond the outlet of the final treatment or 
the inner face of the exterior foundation wall and shall be a minimum size of four inches. 

(d) That portion of piping from the outlet of the neutralizing and treatment device to a point 
ten feet beyond the inner face of the foundation wall shall be of a material that is Product- 
approved specifically for special hazardous waste systems. 

(e) Pumps that discharge special hazardous waste shall be constiaicted of pressure rated pipe 
and fittings, and be of material compatible with Product-approved material specifically for 
special hazardous waste systems. 

(f) Pump wetted parts, pit lining, pit frames, and pit covers shall be constructed of materials 
chemically resistant to the liquids being collected and discharged. 

(g) Alternate design of a system, materials and/or termination points shall be considered 
only where evidence is presented that the standard contained in 248 CMR 10.13(4)(a) 
through (f) cannot reasonably be complied with. Before a permit may be issued, plans for 
an alternative special hazardous waste system shall be submitted to the Inspector for review 
and approval . 

(5) Plumbing Layouts for Laboratory Sinks and Tables . 

(a) General . The installation of waste and venting system for piping handling special 
hazardous liquids shall be the same as sanitary waste and vent piping, except as modified in 
248 CMR 10.13. 

(b) Traps . A trap serving a fume hood or similar type piece of enclosed equipment may not"^ 
be used to serve another fixture outside the hood enclosure and more than one fume hood 
may not be served by the same trap. 

(c) Individual Venting of Traps . 

I. Individual vents shall be provided whenever a battery waste and vent system is not 
being used. 



3/11/05 



248 CMR - 165 



10.13: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



2. When more than one fixture is served by a single continuous waste and vent, the 
branch fittings to receive the discharge from traps need not be at the same elevation, 
(d) Battery Systems of Waste and Vent Piping . 

1 . The main horizontal branch drain shall be one pipe size larger than that required by 
the fixture units connected to it. (Figure cup sinks as one fixture unit.) 

2. Horizontal piping size three inches and smaller shall have a minimum slope of 14 inch 
per foot. 

3. In battery venting, the vent shall be connected to the drain between the last and 
second last branches to fixture traps and a relief vent shall be connected to the main drain 
between the waste stack and the first branch to fixture trap on all but the highest 
connection to a stack. 

4. Additional relief vents are required on battery systems of waste and vent piping when 
the total number of traps served on any one main drain or branch main drain exceeds six, 
and each additional rehef vent may serve from one to five additional traps. 

5. Minimum size of relief vents shall be two inches. 

6. Any branch from a main battery waste which has a separate trap vent may be 
considered as a relief vent and every branch waste having a developed length exceeding 
ten feet shall be individually vented. 

7. The vent for a main battery waste shall be at least V2 the diameter of the horizontal 
branch drain. 

8. Floor drains may be connected to the horizontal main battery drain with traps below 
the floor. In such cases: 

a. the minimum size of the branch shall be not less than three inches; 

b. the main branch to which the floor drain waste is connected need not be larger 
dian the branch to the floor drain; 

c. a separate trap vent is not required unless the developed length from the 
centerline of the floor drain trap inlet exceeds 15 feet. 

d. Floor drain traps shall be included in determining relief vent requirements. 

6. Whenever the main horizontal branch of battery waste piping is below the floor on 
which the fixtures occur, either a drum trap or a P trap may be used and a cleanout shall 
be installed in the vertical waste above the floor. See 248 CMR 10.22: Figure 11. 



(6) Sizing for Neutralizing Sumps 

(a) The normal laboratory sink will produce on the average about ten gallons per hour of 
affluent and this is the basis which should be used to size the neutralizing sump. 

(b) The smallest size sump to be used should have a capacity of five gallons which will 
handle a single laboratory sink or a cup sink. 

(c) To size a sump for more than one sink, the following Table 3 should be used. 

248 CMR 10. 13, TABLE 3 



Maximum 

Number of 

Sinks Handled 


Tank Capacity In Gallons 


Mif\imum Inlet 
Outlet and Vent Sizes 


1 


5 


2 


4 


15* 


2 


8 


30 


3 


16 


55 


4 


25 


100** 


4 


40 


150 


4 


60 


200 


4 


75 


250 


4 


100 


.350 


4 


150 


500 


4 



"Sumps 15 gallons and larger shall be chamber vented. 



3/11/05 



248 CMR - 166 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FriTERS 




10.13: continued 



**When in the judgement of the professional engineer, a neutralizing tank is to be equipped with 
a pH system, the pH system should be equipped with an audio-visual alarm. The regulatory 
agency may also require an "outflow" recorder for pH. The alarm and recorder shall function 
when the system is operating. 

(c) The neutralizing materials to be used should be either: 

1. For dilute acid waste water . 

a. Limestone in pieces of one to three inches diameter size range must contain a 
high calcium carbonate content in excess of 90%. 

b. If the neutralizing medium selected is limestone, then its fill level must be from 
the sump tank bottom to the invert of the inlet pipe. 

2. For Acidic and Alkaline Waste . Caustic Soda (NaOH) and Sulfuric Acid (H^SO^) 
or other neutralizing agents may be added through metering pumps to control the pH. 

(d) Maintenance of Neutralizing Su rtips. 

1. To insure the coaect operation of this system, it shall be inspected monthly (by 
removing the cover, checking the level of limestone chips and adding chips if necessary) 
and neutralizing materials be replaced or replenished as required. 

2. A sign shall be stenciled on or in the immediate area of the sump in letters one inch 
.high. This sign shall read: 




IMPORTANT 
"This sump must be inspected on a regular and frequent basis and the 
neutralizing medium or agent replaced when necessary. Failure to do so will 
result in serious damage to the piping system. " 



(e) Materials of Sump s: 

1. The following materials are Product- Approved by the Board: 

a. High-Density Polyethylene*** 

b. Chemical Stoneware 

c. Polypropylene 

d. Fiber Glass Reinforced Plastic (FRP)*** 

e. Precast or poured in place concrete chambers with a liner resistant to the 
hazardous waste being discharged, 

f. The use of materials other than those specified above must be Product-approved 
by the Board. 

2. Sumps 15 gallons and larger shall be chamber vented. 

3. When in the judgment of the professional engineer, a neutralizing tank is to be 
equipped with a pH system, the pH system should be equipped with an audio- visual 
alarm. The regulatory agency may also require an "outflow" recorder for pH. The alarm 
and recorder shall function when the system is operating. 

4. Sump material subject to distortion by heat or other factors, when in use, such as 
Fiber Glass Reinforced Plastic, must be restrained or enclosed. 

(f) Curbing Around Sumps . DEP standards require curbing around sumps above certain 
sizes. 

(7) Discharge of Waste Through Troughs . 

(a) Laboratory furniture and casework which utilize troughs for the discharge of wastes 
shall be independently trapped, wasted or vented unless the waste outlet is within 30" of a 
properly wasted and vented sink. 

(b) Where troughs or floor trenches are required to intercept floor spills, or are required for 
tank or equipment drainage, the outlets from the trough or trenches shall be equipped with 
acid resisting grating and lining and the system shall be trapped and vented as hereinbefore 
specified. 



' *Sump material subject to distortation by heat or other factors, when in use, must be restrained or enclosed. 



3/11/05 248 CMR -167 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.13: continued 



(8) pH Adjustment Tanks . 

(a) Where it is inadvisable or impractical to install a neutralizing sump with either marble 
or limestone chips to bring pH factor of waste materials up to neutral zone or where the pH 
factor of anticipated wastes may vary from acid range through neutral zone and up into the 
alkaline range a pH adjustment tank shall be provided. 

(b) pH adjustment tanks may be installed for partial or entire building systems. 

(c) pH adjustment tanks will consist of an acid/alkaline resisting tank, receiving wastewater 
from one or more sinks. The tanks shall meet the following requirements: . 

1. This tank is to be sized according to 248 CMR 10.13(6). 

2. The tank is to have an agitator, which will operate when lab sinks and cup sinks or 
other hazardous waste fixtures are in use. 

3. The tank will also have a sensor, to detect the pH of tank contents, within a range of 
two to 12 (alkaline), where the sensor shall be electrically connected to a control panel. 
This control panel is to be connected to acid/alkaline pumps. Acid/alkaline pumps are to 
be inserted into tanks containing neutrahzing agents to bring tank contents up from an 
acid pH or down from an alkaline pH to a range of six to nine. The discharge of each 
pump is to mn directly to the top of the adjustment tank. See schematic sketch in 
248 CMR 10.13(8): FIGURE 1. 

(d) When in the judgement of the professional engineer a neutralized tank is to be equipped 
with a pH system, the pH system shall be equipped with an audio-visual alarm, which shall 
function at all times the system is operating 

(e) The regulatory agency may also require an "outflow" recorder for pH, which shall 
function at all times the system is operating. 

(f) Solvent bearing waste shall not be introduced into the building drainage system or sewer 
but shall be disposed of according to the applicable regulations of the DEP, EPA or other 
appropriate regulating agency. 

(g) Acidic wastes shall be neutralized before being discharged into the building's drainage 
system. 



FIGURE 1 



pH Controller 



:pH, Recorder 



Agitator 




Liquid Level 



Untreated 
Waste 



pH Adjustment System 



(9) Recombinant D.N. A. Laboratory Wastes 

(a) Viable organisms containing recombinant deoxyribonucleic acid (DNA) as defined in 
the latest revision of the National Institutes of Health Guidelines for Research Involving 
Recombinant DNA Molecules (NIH guidelines), except those qualifying as Good Large 
Scale Practice (GLSP) organisms, shall not be introduced into the building drainage system 
or sewers without first being sterilized, treated or inactivated as described in 248 CMR 
10.13(9)(b)and(c). 



3/11/05 



248 CMR -168 





248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.13: continued 

(b) In laboratories where both fermentation and purification take place, the waste for each 
shall be treated by methods proven to be effective and appropriate for the specific type of 
waste (as required by Massachusetts Law, 3 10 CMR 30.000: Hazardous Waste, and Water 
Resource Commission, Risgulation of Waste into Sewerage Works) prior to their discharge 
into the building's drainage system or sewer. 

(c) Laboratory wastes, generated by biomedical research or production laboratories, which 
contain viable recombinant DNA organisms not qualifying as GLSP organisms, shall be 
sterilized or treated according to the regulations and standards of the National Institute of 
Health (Recombinant DNA Guidelines and the Laboratory Safety Monograph) or the 
applicable requirement of other agencies having jurisdiction. The owner of the laboratory 
shall: 

1 . submit the proposed treatment procedures to the registered professional engineer who 
prepares the plans and specifications of the hazardous waste system; 

2. submit the proposed treatment procedures to the relevant authorities, including the 
Inspector; and 

3. receive their approval prior to connection to the building's drainage system. 

(d) Waste containing recombinant DNA organisms shall be: 

1. Sterilized or treated at the point of origin or, where there is more than one point of 
origin, these wastes may be collected in a central holding tank for sterilization and 
treatment. 

2. The holding tank is to have a sampling device and a high water alarm. 

3. The alarm shall be activated when the tank's contents have reached a predetermined 
level. 

4. The sampling device is to consist of a pump or other device or means to transfer a 
selected sample into the control area of the laboratory for verification that it contains no 
living organisms. 

5. When the sample contains no living organisms, the contents of the tank can then be 
allowed to enter the sewer system. If the sampling process discovers live cells, the 
contents of the tank shall be re-sterilized and re-tested before being allowed to enter into 
the sewer. See reference cited below concerning "steam sterilization" and chemical 
disinfection." 

(e) Testing and Monitoring . 

1. The adequacy of treatment methods as selected by an institution is to be monitored 
on aperiodic basis. 

2. Biomedical research or production laboratories shall maintain records indicating the 
results of such testing. 

3. In the event of a testing failure, the system is to be corrected immediately. 

(f) Neutralizing charhbers, or tanks employing marble or limestone chips shall not be used 
to adjust pH for wastes generated by biomedical research or production laboratories. 

(g) Approved and recommended references for "steam sterilization" and "chemical 
disinfection". 

1. Laboratory Safety Monograph (A supplement to the NIH Guidelines of Health and 
Human Services Section 1 l-E-8, Selecting Chemical Disinfectants in Recombinant DNA 
Research, 102-105. 

2. Disinfection, Sterilization and Preservation 3rd Ed. Edited S. S. Bock, Lea and 
Febiger, Philadelphia, 1983. (Part 1 Chemical and Physical Sterilization, Chapter 1 
Sterilization by Heat.) 

(10) Industrial Wastewater . When usage of either a neutralizing sump or a pH adjustment tank 
would be inadequate to treat the industrial wastewater discharge and therefore not comply with 
applicable regulatory limits on hazardous waste, an industrial wastewater treatment system shall 
be designed by an engineer and plans and specifications shall be submitted to the Department 
of Environmental Protection (DEP) or other authorities as required. 

(11) Secondary Containment . 

(a) When a secondary containment system for hazardous waste is specified, it must be 
installed by a licensed plumber in compliance with 248 CMR 10.13. 

(b) The system must be able to withstand a ten-foot hydrostatic head pressure. 

(c) The outer system shall be air tested to five P.S.I. G. for ten minutes. . 

3/11/05 248 CMR -169 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FriTERS 



1013: continued 

(d) The gauge used shall be calibrated in increments no greater than 1/10 P.S.I.G. 

(e) The system shall allow for thermal expansion and contraction, and inner and outer 
piping support. 

10.14: Water Supply and the Water Distribution System 

(1) Potable Water Supply . 

(a) Buildings . 

1. Every building equipped with plumbing fixtures and used for human occupancy or 
habitation shall be provided with a potable supply of cold water in the amounts and at the 
pressures specified in 248 CMR 10.14. 

2. For permanent residences or buildings in which people are employed, hot water shall 
be provided. 

(b) Use of Non-potable Water Prohibited . Only potable water shall be accessible to 
plumbing fixtures supplying water for: 

1. drinking; 

2. bathing; 

3. culinary use; or 

4. the processing of food, medical or pharmaceutical products. 

(2) Water Service . 

(a) The water service pipe shall be of sufficient size to furnish water to the building in the 
quantities and. at the pressure required elsewhere in 248 CMR 10.00. 

(b) It shall, in no case, be less than % inch nominal pipe diameter. 

(c) Recommended methods for sizing the water semce pipe shall be the same as required 
in 248 CMR 10.14(4): Designing and Sizing the Building Water Distribution System. 

(3) Conservation of Water . 

(a) Conservation of Hot Water . 

1. Showers . Showers used for other than safety reasons shall be equipped with flow 
control devices to limit total flow to a maximum of 2.5 G.P.M. per shower head. 

2. Lavatory faucets in public toilet facilities shall: 

a. Limit the delivery of water to a maximum of .5 G.P.M. unless a metering faucet 
is provided that limits delivery to a maximum of 0.25 gallons per metering cycle. 

b. Be equipped or installed with devices which limit the outlet temperature to a 
maximum of 11 0°F. 

c. Metering faucets of any type are not required for toilet facilities designated and 
used by employees only. 

3. The maximum temperature of the domestic hot water in residential buildings shall 
not exceed 130°F. Plumbing fixtures requiring higher temperatures for their proper use 
and function, such as dishwashers and hot water dispensers shall be exempted from 
248 CMR 10.14. 

(b) Conservation of Cold Water for Toilets and Urinals . 

1. Flushometer Toilets . 

a. Flushometer toilets that are floor mounted or wall mounted shall be low 
consumption toilets which use a maximum of 1.6 gallons (six liters) per flush. 

b . Hushometer type urinals shall discharge a maximum of one gallon (3 . 8 liters) per 
flush. 

c. The Board may grant Product-approval to standard flushometer toilets and urinals 
which do not meet the specific standards when, in the opinion of the Board the 
configuration of the building drainage system requires a greater quantity of water to 
adequately flush the system. 

2. Tank Type Toilets . 

a. All two-piece toilets shall be low consumption toilets, which use a maximum of 
1.6 gallons (six liters) per flush. 

b. In satisfaction of the requirements of 248 CMR 10. 14, the Board shall permit the 
installation of tank-type toilets equipped with devices which are found by the Board 
to meet applicable standards, in toilets having a tank capacity in excess of 1 .6 gallons 
(six liters). 

3/1 1/05 248 CMR - 170 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14; continued 




3. All other toilets not covered in 248 CMR 10.14(3)(b)l. and 2. shall be low 
consumption toilets that use a maximum of 1.6 gallons (six liters) per flush. 

(4) Designing and Sizing the Building Water Distribution System , 
(a) Methods to Be Used . 

1. The design of the building's hot and cold-water distribution system shall conform to 
good engineering practices. 

2. The methods used to determine pipe sizes shall be the procedure outlined in 
Appendix "D" of the United States Public Health Service publication #1 038, or a system 
designed by a registered professional engineer, using the computation outlined in 
248 CMR 10.14(4); Tables ], 2, and 3. (Anexampleof the use of these tables is shown 
following 248 CMR 10.14(4): Table 3: Capacity Values for Sei-vice, Mains, Risers 
and/or Branches). 

3. The minimum size of a fixture supply pipe shall be in accordance with 248 CMR 
10.14(4): Table 1. 

4. The size of fixture supplies, the building main and branch distribution piping may be 
determined from 248 CMR 10.14(4): Tables 1, 2, and 3. 

5. To size the hot and cold water main or distribution branches for a building, they shall 
be computed on an individual basis. 

6. A demand factor, as recognized in 248 CMR 10.14(4); Table 2 shall be applied to 
determine the minimum diameter pipe size for the building main and water distribution 
system piping. 

7. Size of Fixture Supplies . 

a. The minimum sizes of a fixture water supply pipe shall be as shown in 248 CMR 
10.14(4); Table r. Minimum Sizes of Fixture Water Supply Lines and Factor Values. 

b. The fixture water supply pipe shall be extended to within at least 30 inches of the 
point of connection to the fixture. 

TABLE 1 
MINIMUM SIZES OF FIXTURE WATER SUPPLY LINES AND FACTOR VALUES 



TYPE OF FIXTURE OR DEVICE 


Nominal 
Pipe Size 
(inches) 


Factor 
Value 


Bathtub (with or without single shower head) 


1/2 


2 


Bidet 


% 


1 


Drinking fountain 


% 


1 


Dishwasher (Domestic) 


Vz 


2 


Dishwasher (Commercial) 


Va 


6 


Kitchen sink, Residential 


V2 


2 


Kitchen sink, Commercial (Pot and Scullery)' 


Va 


6 


Vegetable Prep or Bar Sink (Residential) 


Vi 


2 


Hand Wash Sinks 


% 


1 


Shampoo Sinks 


% 


1 


Lavatory 


% 


1 


Utihty Laundry Sinks 1, 2, or 3 compartments 


>/2 


2 


Shower Valve (single head) 


Vi 


2 


Shower Valve (Multiple heads) 


Va 


6 


Sinks (service, slop) 


V2 


2 


Sinks flushing rim 


3/4 


6 


Laundry Valve 


Vi 


2 


Urinal (flush valve type) 


Va 


6 


Toilet (tank type) 


% 


1 


Toilet (flush valve type) 


1 


12 


Hose Connections/SillcocksAVall Hydrants 


Vi 


2 



3/11/05 



248 CMR- 171 



10.14: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



TABLE 2 



OCCUPANCY USE 


DEMAND FACTORS 


RESIDENTIAL 


One ot Two Family Dwelling 


0.50 


Multi-residential 


0.35 


Hotel 


0.70 


SCHOOL 


General 


0.75 


Shower Room 


1.00 


INSTITUTIONAL 


General 


0.45 


ASSEMBLY 


General 


0.25 


Restaurant, Cafe 


0.70 


Club House 


0.60 


BUSINESS AND MERCANTILE 


General 


0.25 


Laundry 


1.00 


INDUSTRIAL 


General, Exclusive of Process Piping 


0.90 



TABLES 
CAPACITY VALUES FOR SERVICE, MAINS, RISERS AND/OR BRANCHES 



Nominal Pipe or 

Tubing Sizes 

(inches) 


Capacity Value 


3/8 


1 


V2 


1.1 to 


4 


V4 


4.1 to 


9 


1 


9.1 to 


16.5 


11/4 


16.6 to 


28 


11/2 


28.1 to 


55 


2 


55.1 to 


107.5 


21/2 


107.6 to 


182.5 


3 


182.6 to 


287.5 


31/2 


287.6 to 


425 


4 


425.1 to 


700 


5 


700.1 to 


1100 


6 


1100.1 to 


1300 



3/1 1/05 



248 CMR - 172 




10.14: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



8. Example: 248 CMR 10. 14(4); Tables 1, 2 and 3 are used to determine the size of the 
cold water main for a one family residence having the following fixtures: 



A 


Two 


Toilets (Tank type) 


B 


Two 


Lavatories 


C 


One , 


Bathtub 


D 


One 


Shower Stall 


E 


One 


Utility Sink or Laundry Valve 


F 


One 


Dishwasher (Domestic) 


G 


One 


Kitchen Sink 


H 


Two 


Wall Hydrants 



FACTOR VALUES (248 CMR 10.14, from Table 1) 









HOT 


COLD 




A 


Two 


Toilets (tank type) X 1 




2 




B 


Two 


Lavatories X 1 


2 


2 




C 


One 


Bathtub 


2 


2 




D 


One 


Shower Stall 


2 


2 




E 


One 


Utility Sink or Laundry Valve 


2 


2 




F 


One 


Dishwasher (Domestic) 


2 






G 


One 


Kitchen Sink 


2 


2 




H 


One 


Wall Hydrant 




4 






TOTAL 


12 


16 


= 28 



a. 248 CMR 10.14(4): Table 2 indicates a Demand Factor of 0.50 for a Single or 
Two family dwelling. 

b. Multiplying the total Factor Value of 28 by the Demand Factor of 0.50 results in 
a Capacity Value of 14.0 

c. A Capacity Value of 1 4 is between 9. 1 and 1 6.5 in 248 CMR 10. 14(4): Table 3 
and the related pipe size is equals to a one-inch diameter pipe. 

(b) Prevent Water Hammer . 

1. Installation and Design requirements . 

a. All building water supply systems in which quick acting valves and solenoid 
valves are installed shall be provided with devices to absorb high pressures resulting 
from the quick closing of these valves. 

b. These pressure-absorbing devices shall be air chambers that are provided with a 
means for restoring the air to the device should the chambers become waterlogged, 
or other Product-approved mechanical devices. 

c. Water pressure absorbers shall be placed as close as possible to the quick acting 
valves and shall be accessible for maintenance or replacement. 

2. Pressure Absorbing Devices . A mechanical pressure absorbing device may be 
installed: 

a. at the ends of long pipe runs of pipe; or 

b. connected to piping serving batteries of fixtures. 

3. Mechanical Devices . Where mechanical devices are used, the manufacturer's 
specifications shall be followed as to location and method of installation. 

(c) Inadequate Water Pressure . Whenever water pressure from the street main, service or 
other source of supply is insufficient to provide flow pressures at fixture outlets as required 
under 248 CMR 10. 14(4)(f), a booster pump and pressure tank or other means in compliance 
with 248 CMR 10.00 shall be installed on the building water supply system. 

(d) Variable Street Pressures . Where street main pressures fluctuate, the building water 
distribution system shall be designed for the minimum pressure available. 

(e) Su pply Demand . The supply demand in gallons per minute in the building water 
distribution system shall be determined on the basis of the load in terms of supply fixture 
units and of the relationship between load and supply demand. 



3/11/05 



248 CMR -173 



10.14: continued 



(f) 



248 CMR: BOAPO) OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



Minimum Pressures Required in Water Distribution System . 

1 . Based on the minimum static water pressure available, pipe sizes shall be selected so 

that under conditions of peak demand a minimum flow pressure at the point of discharge 

shall not be less than that shown in 248 CMR 10.14(4): Table 4: Minimum Flow 

Pressure and Flow Rates. 

1 . In determining minimum pressures at the outlets, allowances shall be made for the 

pressure drop due to friction loss. 

TABLE 4 
MINIMUM FLOW PRESSURE AND FLOW RATES 



FIXTURE OR DEVICE 


FLOW 

PRESSURE 

P.S.I. 


FLOW 
RATE 
G.P.M. 


Ordinary basin faucet 


8 


2 


Self closing basin faucet 


8 


2.5 


Sink faucet, % inch 


8 


4.5 


Sink faucet, V2 inch 


8 


4.5 


Bathtub faucet 


8 


6 


Laundry Valve, V2 inch 


8 


5 


Shower valves 


8 


3 


Ball-cock for toilet 


8 


3 


Flush valves for toilets (Wide rangd due 
to variation in design and type of toilet) 


15-20 


15.35 


Flush valves for urinal 


15 


15 


Drinking fountains 


15 


0.75 


Sillcock/wall-hydrant 


10 


5 



(g) Excessive Water Pressure . 

1 . When the municipal service or other water service source provides water to a 
building that exceeds 80 P.S.I.G., a pressure reducing valve shall be installed in the water 
main pipe at the point of water service entrance to the building. Tliis is to reduce the 
water pressure to a maximum of 80 P.S.I.G. or less. This requirement does not apply 
where the water service pipe supplies water directly to a water pressure booster system, 
an elevated water gravity tank, or to pumps provided in connection with a hydro- 
pneumatic or elevated gravity water supply tank system. 

2. The Pressure at any fixture under no-flow conditions shall be limited to no more than 
80 P.S.I.G. 

(h) Return Circulation - Where Required . Hot water supply systems in buildings where 
the developed length of hot water piping from the source of the hot water supply to the 
farthest fixture supply exceeds 100 feet shall be: 

1. of the total return circulation type; or 

2. shall be maintained at the design temperature using a self regulating heating cable. 

(5) Installing The Building Water Distribution System . 

(a) Meter Valve . 

1 . A gate valve or other full-port valve shall be installed in the water supply main on the 
discharge side of each water meter. 

2. The valve shall be not less than the size of the building water service pipe. 

(b) Riser Valves . 

1 . Except in single family dwellings, a valve shall be installed at the base of each water 
supply riser. 

2. In multistory buildings, a valve shall be installed at the top of each water supply that 
is an upstream supply pipe from a booster system. 



3/11/05 



248 CMR - 174 



- 248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14; continued 

(c) Valves in Dwelling Units . 

1 . If individual fixture valves are not installed in two-family or multiple family dwelling 
units, one or more main control valves shall be provided so that the water to any unit may 
be shut off without stopping the flow of water to other units. 

2. These valves shall be readily accessible inside the unit controlled. 

(d) Individual Fixture Valves . 

1 . In buildings that are occupied other than residential dwellings, the water supply line 
to each fixture or other piece of equipment shall be provided with a valve or a fixture 
stop to shut off the water to the fixture. 

2. All sillcocks, hose bibbs and wall hydrants shall be separately controlled by a shutoff 
valve inside the building. 

(e) Tank Controls . Supply lines from pressure or gravity tanks shall be provided with 
valves at or near the tanks. 

(f) Water Heating Equipment Valve . The cold-water branch to each hot water storage tank 
or water heater shall be provided with a valve located near the equipment and above the top 
of the tank. 

(g) Valves to be Accessible . 

1 . All water supply main control valves shall be placed so as to be accessible for service 
and maintenance. 

2. All concealed tub or shower valves shall be provided with renewable seats. 

(h) Main Control Valve Design . Except for single fixture shutoffs, main control valves on 

all water mains and branches, shall, when fully opened, have a cross sectional area not less 

than the cross sectional area of the pipe (full-port) in which they are installed. 

(i) Draining Systems . Drain cocks or valves should be provided at all low points of piping 

so that every portion of the water piping system can be drained. A drain valve shall be 

required near the meter or main control valve. 

(j) Metering Devices with Check Valves . 

1 . Where water meters or metering devices with check valves are installed, which can 
create a potential hazard or nuisance due to thermal expansion, a thermal expansion tank 
shall be installed as close as possible to the water meter or metering devices. 

2. The thermal expansion tank shall be of adequate size and constructed of materials 
approved in 248 CMR 10.06. 

(k) Hose Connections . 

1. Outside Hose connections, sillcocks or wall hydrants shall be installed in all 
residential buildings no more than 100-feet apart. 

2. In all commercial buildings, sillcocks and hose connections shall only be required in: 

a. mechanical rooms; 

b. mechanical penthouses; or 

c. mechanical areas of similar use and nature. 

3. A backflow preventer or vacuum breaker shall be installed on all sillcocks, hose 
connections and wall hydrants including faucets that incorporate a hose thread outlet. 

(1) Saddle Valves . 

1. Saddle valves are prohibited in the water supply line. 

2. No water supply line shall be tapped, burned, welded, or drilled, except that 
mechanical devices that have been Product-approved by the Board which are designed 
and engineered to create penetration in piping for specific joining methods may be used. 

(6) Water-Pressure Booster Systems . 

(a) Water Pressure Booster Systems Required . When water pressure in the public water 
main or individual water supply system is insufficient to supply the probable peak demand 
flow to all plumbing fixtures and other water needs freely and continuously with the 
minimum pressures and quantities, specified in 248 CMR 10.14(4)(f) or elsewhere in 
248 CMR 10.00- and in accordance with good practice, the rate of supply shall be 
supplemented by: 

1 . a gravity water tank; 

2. a hydro-pneumatic pressure booster system; or 

3. A pressure tank installed in accordance with 248 CMR 10.14(4)(c). 

(b) Su pport . AH water supply tanks shall be supported in accordance with 780 CMR: The 
Massachusetts State Building Code or local building commissioner. 

3/11/05 248 CMR'- 175 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



(c) Covers . 

1. All water supply tanks shall be covered to keep out unauthorized persons, dirt, and 
vermin. 

2. The covers of gravity tanks shall be vented with a return bend vent pipe having an 
area not less than the area of the down feed riser pipe. 

3. The vent shall be screened with coiTOsion resistant screen of not less than 16 x 20 
mesh. 

(d) Overflows for Water Supply Tanks . 

1 . Each gravity or suction water supply tank shall be provided with an overflow having 
a diameter not less than shown in 248 CMR 10. 14(6): Table 5: Sizes ofOveiflow Pipes 
for Water Supply Tanks. 

2. The overflow outlet shall discharge above and within not less than six inches of a 
roof or roof drain, floor or floor drain or over an open water supplied fixture. 

3. The overflow outlet shall be covered by a corrosion resistant screen of not less than 
1 6 x 20 mesh to the inch and by Va inch hardware cloth or shall tenninate in a horizontal 
angle seat check valve. 

4. Drainage from overflow pipes shall be directed so as not to freeze on roof walkways. 

TABLE 5 
SIZES OF OVERFLOW PIPES FOR WATER SUPPLY TANKS 



Maximum Capacity of Water Supply 
Line to Tank 


Diameter of Overflow 
Pipe (inches ID) 


0-50 G.P.M. 


2 


51- 100 G.P.M. 


21/2 


101- 165 G.P.M 


3 


166- 355 G.P.M. 


4 


356- 640 G.P.M. 


5 


641- 1,040 G.P.M. 


6 


OVER 1,040 G.P.M. 


8 



(e) Low Pressure Cut-off Required on Booster Pumps . When a booster pump is used on a 
water pressure booster system and the possibility exists that a positive pressure of ten 
P.S.I.G. or less may occur on the suction side of the pump, there shall be installed a low 
pressure cut-off on the booster pump to prevent the creation of a vacuum or negative pressure 
on the suction side of the pump, thus cutting off water to other outlets. 

(f) Potable Water Inlet Control and Location . 

1 . Potable water inlets to gravity tanks shall be controlled by a ball cock or other 
automatic supply valve so installed as to prevent the tank from overflowing. 

2. The inlet shall be terminated so as to provide an accepted air gap but in no case less 
than four inches above the overflow. 

(g) Tank Drain Pipes . Each tank shall be provided at its lowest point with a valve and pipe 
to permit emptying the tank which shall discharge as required for overflow pipes and not 
smaller in size than shown in 248 CMR 10.14(6): Table 6: Sizes of Drain Pipes for Water 
Tanks. 

TABLE 6 
SIZES OF DRAIN PIPES FOR WATER TANKS 



TANK CAPACITY 
(Gallons) 


DRAIN PIPE 
(hiches) 


Up to 750 


1 


751 to 1,500 


P/2 


1,501 to 3,000 


2 


3,001 to 5,000 


2^2 


5,001 to 7,500 


3 


Over 7,500 


4 



3/11/05 



248 CMR - 176 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



(h) Prohibited Location of Potable Supply Tanks . Potable water gravity tanks or manholes 
of potable water pressure tanks shall not be located directly under any soil or waste piping, 
(i) Pressure Tanks - Vacuum Relief . 

1. All potable water pressure tanks shall be provided with a vacuum relief valve at the 
top of the tank that will operate up to a maximum water pressure of 200 P.S.I.G and to 
a maximum water temperature of 200°F. 

2. Vacuum relief valves shall be sized according to the, following: 

a. The relief valves shall have a cross sectional area at the valve seat that is not less 
than one pipe size smaller than the cold water supply or the tank drain, whichever is 
lai-ger. 

b. The minimum size of the vacuum relief valves shall be '/2 inch. 

c. Valves shall have a minimum Vi diameter orifice. 

d. The air inlet opening on any vacuum relief valve shall not be smaller than the 
nominal pipe size of the valve. 

3. Vacuum relief valves may be installed in multiples. 

(j) Pumps and Other Appliances . Water pumps, filters, softeners, tanks and all other 
appliances and devices used to handle or treat potable water shall be protected against 
contamination. 

(7) Protection of Potable Water Supply . 

(a) General . A potable water supply system shall be designed, installed and maintained in 
such manner as to prevent contamination from non-potable liquids, solids, or gases from 
being introduced into the potable water supply through cross connections or any other piping 
connections to the system. 

(b) Identification of Potable and Non-potable Water . In all buildings where dual water 
distribution systems are installed, one potable water and the other non-potable water each 
system shall be identified by color bands or metal tags. 

1. Color Marking . 

a. When color marking is employed, potable water lines shall be painted green and 
non-potable water lines shall be painted yellow. 

b. This requirement may be accomplished by painting three inch wide bands of 
green or yellow at intervals of not more than 25 feet and at points where piping 
passes through walls, floors and roofs. The colored bands shall be applied to the 
piping on both sides of the walls and above and below the floor or roof penetrations. 
Outlet locations, (the point of use) for non-potable water systems shall be marked 
with a tag or color coded identification. 

2. Metal Tags . 

a. When tags are used, three-inch diameter metal tags bearing the legend SAFE 
WATER in letters not less than Vz inch in height shall identify potable water lines. 

b. Firmly attached metal tags having the shape of a four-inch equilateral triangle 
bearing the legend WATER UNSAFE in letters not less than 7/16 inches in height 
shall identify non-potable water supply lines. 

c. As in the use of color bands, tags shall be attached to pipes at intervals of not 
more than 25 feet and at either side of points where pipes pass through walls and 
above and below points where pipes pass through floors or roofs. 

(c) Cross Connection Control . 

1 . Cross connections between potable water systems and other systems or equipment 
containing water or other substances of unknown or questionable safety are prohibited; 
except when and where, as approved by the Massachusetts Department of Environmental 
Protection or its designee, suitable protective devices such as the Reduced Pressure Zone 
Backflow Preventer or equal are installed, tested, and maintained to insure proper 
operation on a continuing basis. 

2. No plumbing permit shall be issued for cross connection installations that require 
Reduced Pressure Zone Backflow Preventers or Double Check Valve Assemblies until 
the application for a permit is accompanied by a letter of approval from the 
Massachusetts Department of Environment^ Protection or its designee. 



3/11/05 248 CMR -177 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



(d) Interconnections . 

1 . Individual Water Supplies . Cross connections between an individual water supply 
and a potable public supply shall not be made unless specifically approved by the 
Massachusetts Department of Environmental Protection. 

2. Public Water Supplies . Interconnection between two or more public water supplies 
shall be permitted only with the approval of the health authority having jurisdiction. 

(e) Toxic Materials . 

1. Construction . Piping conveying potable water shall be constructed of nontoxic 
material. 

2. Materials and Substances . No materials or substances that could produce either toxic 
conditions, taste, odor, or discoloration in a potable water system shall be introduced into 
or used in such systems. 

3. Painting of Water Tanks . The interior surface of a potable water tank shall not be 
lined, painted, or repaired with any material that will affect the taste, odor, color, or 
potable condition of the water supply when the tank is placed into service or returned to 
service following maintenance. 

(f) Used Piping . Piping which has been used for any other purpose than conveying potable 
water shall not be used for conveying potable water. 

(g) Self Feeding Water Connections to Heating Boilers . 

1 . Potable water connections to a heating boiler shall be provided with an approved 
back flow preventer or air gap in the water line to prevent a cross connection. 

2. Backflow preventers shall not be required on manually controlled water supply lines 
to residential type steam and/or gravity fed hot water space heating systems. 

(h) Prohibited Connections to Fixtures and Equipment . Connection to the potable water 
supply system for the following shall be protected against backflow: 

1. bidets; 

2. operating, dissection, embalming, and mortuary tables or similar equipment ~ in such 
installation, the hose used for water supply shall terminate at least 12 inches away from 
every point of the table or attachments; 

3. pumps for non-potable water, chemicals or other substances; note that priming 
connections may be made only through an air gap; 

4. building drainage, sewer or vent system; and 

5. any other fixture of similar hazard. 

(i) Refrigerating Unit Condensers and Cooling Jackets . 

1 . Except where potable water provided for a refrigerator condenser or cooling jacket 
is entirely outside the piping or tank containing a toxic refrigerant, with two separate 
thicknesses of metal separating the refrigerant from the potable water supply the inlet 
connection shall be provided with an approved double check valve installation. 

2. Also adjacent to and at the outlet side of the check valve, an approved pressure relief 
valve set to relieve at five P.S.I.G. above the maximum water pressure at the point of 
installation shall be provided if the refrigeration units contain more than 20 pounds of 
refrigerants. 

(j) Water Recycling Prohibited . 

1 . Water used for cooling of equipment or other processes shall be discharged into the 
drainage system through an air gapped indirect waste. Under conditions where water 
shortage may occur, the water used for cooling may be used for non-potable purposes. 
Water used for cooling of equipment or other processes shall not be returned to the 
potable water system. 

2. Exceptions . Water recycling systems may be installed if Special-permission under 
248 CMR 3.04(3) has been granted by the Board. Such systems include: 

a. dedicated gray water systems; 

b. black water systems; or 

c. on site wastewater treatments systems. 

(k) Protection Against Backflow and Backsiphonage . 

1. Water Outlets . A potable water system shall be protected against backflow and 
backsiphonage in accordance with M.G.L. c. 1 1 1, § 160A, and 310 CMR (Department 
of Environmental Protection) relative to protection of the potable water supply). 



3/11/05 248 CMR -178 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.14: continued 



a. Air Gap . An air gap as defined in 248 CMR 10.03: Air-Gap Water Distribution 
between the potable water outlet and the flood level rim of the fixture it supplies or 
between the outlet and any other source of contamination. 

b. Backflow Preventer . A backflow preventing device or vacuum breaker to prevent 
the drawing of contamination into potable water system. 

Minimum Required Air Gap . 

a. How Measured . The minimum required air gap shall be measured vertically from 
the lowest end of a potable water outlet to the flood rim or line of the fixture or 
receptacle into which it discharges. 

b. Size . 

i. The minimum required air gap shall be twice the effective opening of a 
potable water outlet. 

ii. If the outlet is found to be at a distance that is less than three times the 
effective opening away from a wall or similar vertical surface; the minimum 
required air gap shall be three times the effective opening of the outlet, 
iii. In no case shall the minimum required air gap be less than shown in 
248 CMR 10.14(7): Table 7: Minimu?n Air Gaps for Plumbing Fixtures: 
(i) Side wall ribs or similar obstnjctions do not effect air gaps when they are 
spaced from the inside edge of a spout opening at a distance greater than three 
times the diameter of the effective opening for a single wall; or greater than 
four times the diameter of the effective opening for two intersecting walls, 
(ii) Vertical wail, ribs, or similar obstructions extending from the water 
surface to or above the horizontal plane of the spout opening require a greater 
air gap when spaced closer to the nearest inside edge of spout opening than 
specified in 248 CMR 10. 14(7)(k)2.b.iii.(i). The effect of three or more such 
vertical walls or ribs has not been determined. In such cases, the air gap shall 
be measured from the top of the wall. 



TABLE? 
MINIMUM AIR GAPS FOR PLUMBING FIXTURES 



MINIMUM AIR GAPS 
FOR PLUMBING FIXTURES 


Minimum Air Gap 


When not affected by 
nearwall^"^*^"^^ 


When affected by 
nearwallf'^c^^s) 


Lavatories and other fixtures with effective 
openings not greater than Vi inch diameter. 


1 


1.50 


Sink, laundry sinks, goose neck bath faucets 
and other fixtures with effective openings 
not greater than % inch diameter 


1.5 


2.25 


Over rim bath fillers and other fixtures with 
effective openings not greater than one inch 
diameter. 


2 


3.0 


Drinking water fountains single orifice 7/16 
(0.437) in. diameter or multiple orifices 
having total area of 0.150 sq. in. (area of 
circle 7/16 in. diameter) 


1 


1.50 


Effective openings greater than 
one inch 


2X diameter of 
effective opening 


3X diameter of 
effective opening 



3. Devices for the Protection of the Potable Water Supplv . Approved backflow 
preventers or vacuum breakers shall be installed with any plumbing fixture or equipment, 
the potable water supply outlet of which may be submerged and which cannot be 
protected by a minimum air gap. 

4. Certification of Devices . 

a. Before any device for the prevention of backflow or backsiphonage is installed 
the following requirements shall be satisfied: 

i. An Approved-testing-lab shall have first certified it as being acceptable. 



3/1 1/05 



248 CMR - 179 



10.14: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



ii. The Board has recognized it as being Product-approved, 
iii. These backflow devices shall be maintain in compliance with 310 CMR 
22.22: Cross Connections Distribution System Protection. 
b. Labeling . 

i. Piping after each device shall be labeled as "Water Subject to Questionable 
Safety", black lettering on yellow background, sizes of lettering and background 
determined by ANSI A13.1-85, S'c/ie/ne/or the Identification of Piping Systems. 
ii. The labels shall be placed along the installation every 25 feet and at both 
penetration points where pipes pass through walls and both penetration points 
where pipes pass through floors or roofs. 

5. Installation of Devices . 

a. Vacuum Breakers . 

i. Vacuum breakers shall be installed with the critical level at least six inches 
above the flood level rim of the fixture they serve and on the discharge side of the 
last control valve to the fixture. 

ii. No shut-off valve or faucet shall be installed beyond the vacuum breaker, 
iv. For closed equipment or vessels such as pressure sterilizers the top of the 
vessel shall be treated as the flood level rim but a check valve shall be installed 
on the discharge side of the vacuum breaker. 

b. Reduced Pressure Zone Backflow . A reduced pressure zone type backflow 
preventer may be installed subject to full static pressure. Where damage may occur 
to the building or structure due to water discharge from the vent port precautions 
shall be taken. 

c. Devices of All Types . 

i. Backflow and backsiphonage preventing devices shall be accessibly located 
preferably in the same room with the fixture they serve, 
ii. Installation in utility or semce spaces, provided they are readily accessible, 
is also permitted. 

6. Tanks and Vats -- Below Rim Supply . 

a. Where a potable water outlet terminates below the rim of a tank or vat and the 
tank or vat has an overflow of diameter not less than given in 248 CMR 
10.14(6): Table 5: Sizes of Overflow Pipes for Water Supply Tanks, the overflow 
pipe shall be provided with an air gap as close to the tank as possible. 

b. The potable water outlet to the tank or vat shall terminate a distance not less than 
1 Vi times the height to which water can rise in the tank above the top of the overflow. 

c. This level shall be established at the maximum flow rate of the supply to the tank 
or vat and with all outlets except the air gap, overflow outlet closed. 

d. The distance from the outlet to the high water level shall be measured from the 
critical point of the potable water supply outlet. 

7. Protective Devices Required . Approved devices to protect against backflow and 
backsiphonage shall be installed at all fixtures and equipment where backflow and/or 
back siphonage may occur and where a minimum air gap cannot be provided between the 
water outlet to the fixture or equipment and its flood level rim. 

8. Connections Not Subject to Back Pressure . 

a. Where a water connection is not subject to back pressure, a non-pressure type 
vacuum breaker shall be installed on the discharge side of the last valve on the line 
serving the fixture or equipment. 

b. A list of some conditions requiring protective devices of this kind is given in in 
248 CMR 10.14(7): Table 8: Cross Connections Where Protective Devices Are 
Required and Critical Level (C-L) Settings for Backflow Preventers. 

9. Barometric Loop . Water connections not subject to back pressure where an actual 
or potential backflow or backsiphonage hazard exists may in lieu of devices specified in 
248 CMR 10. 14(7)(k)5., be provided with a 35 foot barometric loop. Barometric loops 
shall precede the point of connection. 



3/11/05 248 CMR -180 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 

10. Pressure Type Vacuum Breakers . Water connections not subject to backpressure 
where an actual or potential backflow or backsiphonage hazard exists may be protected 
by the installation of a pressure type vacuum breaker, provided that such device is 
installed with the critical level a minimum of 12 inches above the highest outlet or fixture 
served by the connection. 

11. Anti-siphon or backpressure valves : 

a. An anti-siphon or backpressure valve shall be installed on any chemical metering 
pump that pumps any chemical into a potable water supply to prevent back 
siphonage. 

b. The anti-siphon or back-pressure valve must be spring loaded and set at a 
minimum of five-P.S.I.G. (An example may be an anti-siphon or back-pressure valve 
installed on a positive displacement metering pump's discharge line and pumping 
sodium hypochlorite into a water main at a well house for disinfection purposed.) 

TABLE 8 

CROSS CONNECTIONS WHERE PROTECTIVE DEVICES ARE REQUIRED AND CRFHCAL 

LEVEL (C-L) SETTINGS FOR BACKFLOW PREVENTERS 




Fixture or Equipment 


Method of Installation 


Aspirators and ejectors 


C-L at least six inches above flood level or receptacle. 


Dental units 


On models without built-in vacuum breakers ~ C-L at least six 
inches above flood level rim of bowl. 


Dishwashing machines 


C-L at least six inches above flood level of machine. Install on 
both hot and cold water supply lines. 


Flushometers (closet and urinal) 


C-L at least six inches above top of fixture supplied. 


Garbage can cleaning machine 


C-L at least six inches above flood level of machine. Install on 
both hot and cold water supply lines. 


Hose outlets 


C-L at least six inches above highest point on hose line. 


Laundry machines 


C-L at least six inches above flood level of machine. Install on 
both hot and cold water supply lines. 


Lawn sprinklers 


C-L at least 12 inches above highest sprinkler or discharge outlet. 


Steam tables 


C-L at least six inches above flood level. 


Tank and vats 


C-L at least six inches above flood level rim or line. 


Trough urinals 


C-L at least six inches above perforated flush pipe. 


Flush tanks 


Must be equipped with approved ball cock. Where ball cocks 
contact tank water they must be equipped with a vacuum breaker 
at least one inch above the overflow outlets. Where a ball cock 
does not contact tank water install the ball cock outlet at least one 
inch above the overflow outlet or provide a vacuum breaker as 
specified above. 



3/11/05 



248 CMR -181 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



TABLE 8A 

ACCEPTABLE TYPES OF B ACKFLOW PREVENTERS FOR PREVENTION OF 

CROSS CONNECTIONS ON POTABLE WATER 



AG 

RPBP 

DCVA 

AVB 

BFPAV 


AIR GAP 

REDUCED PRESSURE BACKFLOW PREVENTER 

DOUBLE CHECK VALVE ASSEMBLY 

ATMOSPHERIC VACUUM BREAKER 

BACKFLOW PREVENTER WITH INTERMEDIATE ATMOSPHERIC 

VENT 


TYPE OF HAZARD ON 
PREMISES 


ACCEPTABLE TYPES OF BACKFLOW 
PREVENTER 


COMMENTS* 




AG 


RPBP 


DCVA 


AVB 


BFPAV 




1 . Sewage Treatment Plant 


X 


X 










2. Sewage Pumping Stations 


X 


X 










3. Food Processing 


X 


X 


X* 






* If no health hazard exists 


4. Laboratories 


X 


X 


X* 






* If no health hazard exists 


5. Sinks with hose threads on inlets 


X 


X 




X 






6. Hospitals, Mortuaries, Clinics 


X 


X 










7. Plating Facilities 


X 


X 










8. Irrigation Systems** 


X 


X 




X* 




Each case should be 
evaluated individually 














* If no back pressure is 
possible 


** Pressure Vacuum Breakers 
can be installed if no health 
hazard exists and back 
pressure is not possible. 


9. Systems or Equipment Using 
Radioactive Material 


X 


X 










10. Submerged Inlets 


X 


X 




X* 




* If no health hazard exists 
and no back pressure is 
possible 


11. Dockside Facilities 


X 


X 










12. Valved outlets or fixtures with 
hose attachments 


X 


X 


X* 


X** 




Each case should be 
evaluated individually 






■ 








* If no health hazard exists 














** If no health hazard exists 
and no back pressure is 
possible 


13. Commercial Laundries and Dry 
Cleaners 


X 


X 










14. Commercial Dishwashing 
Machines 


X 


X 




X* 




If no health hazard exists 


15. High and Low Pressure Boilers 


X 


X 








If chemicals are added 


16. Low Pressure Heating Boilers 










X 


Residential and small 
commercial, having no 
chemicals added 


1 7. Photo Processing Equipment 


X 


X 










18. Reservoirs-cooling Tower 
Recirculation Systems 


X 


X 












3/11/05 



248 CMR -182 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 




AG 

RPBP 

DCVA 

AVB 

BFPAV 


AIR GAP 

REDUCED PRESSURE BACKFLOW PREVEN TER 

DOUBLE CHECK VALVE ASSEMBLY 

ATMOSPHERIC VACUUM BREAKER 

BACKFLOW PREVENTER WITH INTERMEDIATE ATMOSPHERIC 

VENT 


TYPE OF HAZARD ON 
PREMISES 


ACCEPTABLE TYPES OF BACKFLOW 
PREVENTER 


COMMENTS* 




AG 


RPBP 


DCVA 


AVB 


BFPAV 




19. Fire Fighting Systems 














a. Any system which incorporates 
pumper connections into which 
chemical extinguishing agents or 
non-potable water may be pumped. 


X 


X 


X 








b. Any system which incorporates 
storage tanks or fire pumps taking 
suction from covered tanks or 
reservoirs 


X 


X 


X 








c. Any system incorporating 
connections to chemical 
extinguishing agents, anti-freeze, or 
auxiliary water supplies. 


X 


X 










20. Solar Energy Systems 


X 


X 






X* 


* Residential and small 
commercial having no 
chemicals or only USP 
Glycerin added to water 


21. Single Jacketed Heat 
Exchangers 


X 


X 








Each case should be 
evaluated individually 



Source of Table 8 A is Department of Environmental Protection (310 CMR 22.22) 

(8) Hot Water Supply System . 

(a) In residences and buildings intended for continuous occupancy, hot water shall be 
supplied to all plumbing fixtures and equipment used for bathing, washing, culinary purpose, 
cleansing, laundry, or building maintenance. 

(b) Hot water storage systems shall be designed to adequately accommodate the fixtures 
being served. 

(9) Hot Water Tanks or Heaters . 

(a) Domestic Hot Water Storage Tanks and Tankless Heaters : 
Performance Efficiency . 

1 . All automatic, electric, domestic hot water storage tanks shall have a stand-by loss 
not exceeding four W/ft.^ of tank's surface area; when tested in accordance with ANSI 
STANDARD C72-i entitled Household Automatic Electric Storage Type Heaters. 

2. All gas and oil fired, domestic hot water storage tanks shall have: 

a. a recovery efficiency (E') not less than 75%; and 

b. a stand-by loss percentage (S) not exceeding: S = 2.3 + 61fW; where. , . .V = rated 
volume in gallons when tested in accordance with ANSI Standard 221.10.3-74 Gas 
Water Heaters Volume HI, circulating tank, instantaneous and large automatic storage 
type water heaters. 

3. EXCEPTIONS: All gas and oil fired heaters over 80 gallons capacity are exempt 
from the requirement on recovery efficiency. When using Std. RE-7, oil fired units have 
a CF = 1.0; Q equals total gallons of oil consumed; and H equals total heating value of 
oil in Btu/gal. 

a. All gas and oil fired heaters with a Btu/h input rate over 75,000 are exempt from 
the requirements on recovery efficiency. 



3/11/05 



248 CMR -183 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



b. When using ANSI Z2 1.1 0.3-74, oil fired units have a CF= 1.0; Q equals total 
gallons of oil consumed; and H equals total heating value of oil in Btu/gal. 

4. Insulation . 

a. Heat loss from unfired hot water storage tanks shall be limited to a maximum of 
15 Btu/h/sq. ft. of external tank surface area. 

b. The design ambient temperature shall be no higher than 65 °F for calculating heat 
losses. 

5. Combination Domestic Hot Water/Space Heating Boilers . Service water heating 
equipment shall not be dependent upon year round operation of space heating boilers 
(that is, boilers that have winter space heating as another function), except for the 
following system: 

Domestic Hot Water/Space Heating Boilers having a stand-by loss in Btu/h less than: 

13.3 pmd + 400 . , ,, ^ ^ 
pmd = probable maximum demand 

n 
n = fraction of year when outdoor daily mean temperature exceeds 64.9°F. 

The stand-by loss is to be determined for a test period of 24 hour duration while 
maintaining a boiler water temperature of 90°F above ambient. 

6. Temperature Controls . 

a. Domestic hot water systems shall be equipped with automatic temperature 
controls capable of adjustment from the lowest to the highest acceptable temperature 
settings for the intended use. 

b. Shut down: 

i. A separate switch shall be provided to permit turning off the energy supplied 
to electric domestic hot water systems. 

ii. A separate valve shall be provided to permit turning off the fuel supplied to 
the main bumer(s) of all other types of domestic hot water systems. 

(b) Minimum Capacity . The minimum capacity of a hot water storage tank or heater shall: 

1 . be based upon the hot water demand of the building which is served; 

2. be in accordance with the generally accepted standards of engineering practice; and 

3. comply with the minimum standards of 105 CMR 410.000: Minimum Standards of 
Fitness for Human Habitation {State Sanitary Code, Ompter II). 

(c) Working Pressure of Storage Tank . To determine the working pressure of a hot water 
tank as required by M.G.L. c. 142, § 18E, the street or service pressure only shall be 
considered, unless a water pressure booster system is used to raise the house pressure above 
the street pressure. 

(d) Tank Drains . A storage tank shall be equipped with a brass drain cock or valve for 
emptying at the lowest point or a valve or cock approved by the Board. 

(e) Cold Water Supply . 

1 . A check valve shall not be installed in the cold water supply to any hot water heater 
or hot water storage tank, unless Special-Permission has been granted by the Board. 

2. Thermal check valves that have a minimum of a Ve-inch diameter hole drilled in the 
clapper are permitted. A thermal expansion tank may be required or necessary on any 
cold water supply system where installation of Backflow Prevention Devices or pressure 
reducing valves would create a closed system and constitute an operating hazard or 
nuisance. 

(f) Prohibited Methods of Water Heating . 

1 . Hot Water Generators . No coils, boosters or other hot water heating devices shall be 
installed in direct contact with the heat generating source of any building heating system 
or heating unit. 

2. Systems Without Automatic Control . No domestic hot water storage system, 
connected with or to, a direct heating device or appliance, shall be installed in any 
basement of any building or other unattended area unless such installation has fiilly 
automatic control to prevent raising of the temperature of the water in any part of the 
storage tank to 2 HT. 



3/11/05 248 CMR -184 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



(g) ASME Requirements for Large Volume Water Heaters and Storage Tanks . 

1 . Water heaters shall be constructed to conform to the specific sections of the ASME 
Code when the heaters have the following features: 

a. Installed in other than a private residence. 

b. Having a storage capacity of over 1 20 gallons and/or a recovery equal to 200,000 
B.T.U. 

c. Being unfired or heated by direct firing by means of oil, gas (natural, 
manufactured or bottled propane, etc.) or electric resistance elements. 

d. All safety controls required by ASME shall be supplied in strict compliance with 
ASME standards. 

e. Examples: 

i. An 80-gallon tank with a recovery rate 210,000 BTU must comply with 

ASME Standards. 

ii. Two tanks installed each with 100 gallon capacity with an indirect water 

heater with a recovery rate of 210,000 BTU feeding tanks shall meet ASME 

standards. 

f. The requirements of 248 CMR 10.14(10)(b)I. do not apply for water heaters 
installed in a single family dwelling only or a single Condominium unit having 
separate water heating source for the specific needs of that unit only. 

2. ASME Data Sheet . 

a. Copies of an ASME data sheet attesting to the conformance with the requirements 
of the applicable section of the Code and signed by an authorized and qualified 
inspector shall be furnished to the owner and/or installing contractor. 

b. A copy of the data shall be permanently displayed in a suitable mounting on a 
wall adjacent to the water heater for examination by the plumbing inspector. 

3. All unfired water heaters within the limits specified under 248 CMR 10.14(10)(b)l. 
and heated by steam or boiler water from a remote boiler shall be constructed and 
stamped in accordance with all the requirements of the latest edition of ASME Code, 
Section 8. 

4. All direct fired water heaters specified under 248 CMR 10.14(10)03)1. and containing 
an intermediate heating medium at a temperature of over 200°F and not exceeding 250°F 
or 160 P.S.LG. shall be constructed and stamped in accordance with all the requirements 
of ASME Code, Section 4. 

5 . All direct fired water heaters within the specified under 248 CMR 1 0. 1 4( 1 0)(b) 1 . and 
containing an intermediate heating medium at a temperature of over 250°F and not 
exceeding 300°F, and not exceeding an operating pressure of 75 P.S.LG. shall: 

a. be constructed and stamped in accordance with all the requirements and 
guidelines of ASME Code, Section 1; 

b. be fully stress relieved; and 

c. have all welded joints fully radio graphed and found acceptable to the qualified 
inspector of the inspection agency. 

6. Direct-fired Water Heaters : 

a. No direct-fired water heater employing a heat transfer medium or intermediate 
heating medium operating above. 300°F and 75 P.S .I.G shall be installed. 

b. In no case shall the domestic water be heated by a direct-fired heater above 
200°F. 

c. All direct fired heaters employing an intermediate heat transfer system shall be 
provided with an adequate space within the heat transfer system for expansion of the 
heat transfer fluid. This shall be equal to at least 10% of the volume of the heat 
transfer system. A separate expansion tank of equal volume may be furnished. 

d. All direct fired v^^ater heaters employing an intermediate heat transfer system shall 
be furnished with a relief valve in the vapor space of the expansion area or tank. The 
relief valve shall be ASME, National Board approved and rated and comply with 
Massachusetts Standards. The valve shall have a testing lever and shall be piped to 
an adequately size separated vent to the outside of the building. 

(h) Safety Devices for Hot Water Tanks . 

1. Safety devices to be used on hot water tanks and tankless heaters shall be installed 
to comply with the provisions of M.G.L. c. 142, § 19 and Standard ANSI 221.22. 



3/11/05 248 CMR -185 



10.14: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



2. Pressure Relief Valves . 

a. Pressure relief valves installed on direct-fired water heaters, except for tankless 
heaters, having up to 200,000 BTU per hour input shall have a listed rating of not less 
than the heater input. 

b. The minimum valve size shall be %-inch except that heaters with inputs of 1 5,000 
BTU per hour or less ma}' install 'A-inch pressure relief valves. 

c. For tankless heaters connected to low pressure steam and hot water heating 
boilers, the pressure relief valve shall be sized according to 248 CMR 
10.14(9): TflWe 9, as follows: 

TABLE 9 



Heater Rating (Gal per Min) 


Valve Size 


Up to 5 


V2-inch 


Over 5 up to 20 
Standard Z21.22 applies 


%-inch 


Over 20 up to 50 


1-inch 


Over 50 
ASME Standard applies 


1 - P/4-inch 



3. Temperature Relief Valves . Temperature Relief Valves shall meet the requirements 
of M.G.L. c. 142, § 19 and Standard ANSI Z21.22 latest issue. 

a. Valves shall be minimum ^-inch size except that for heaters with input of 1 5 ,000 
BTU per hour or less, the valve can be Vz-inch size. 

b. The automatic Temperature Relief Valve shall be self-closing and be equipped 
with a testing lever. 

c. The thermostatic relieving element shall extend not more than five inches into the 
top of the tank. 

d. The temperature relief valve shall have a minimum discharge in BTU per hour 
at least equal to the heat source input, 

e. When the water heater is furnished with a separate relief valve tapping in the side 
and within the top six inches of the tank, the valve installed in such tapping may be 
equipped with either an extension or short thermostatic element. 

f. The official A.G.A. listed rating of an approved valve will be considered in 
compliance with the requirements of 248 CMR 10.14. 

4. Combination Temperature & Pressure Relief Valves . 

a. A combination temperature and pressure relief valve shall meet the requirements 
of both the temperature and pressure relief valves as provided in 248 CMR 
10.14(ll)(b) and 10.14(ll)(c). 

b. For heaters over 200,000 BTU/Hr., input rating: 

i. The valve shall have a minimum ASME temperature steam rating of 200,000 

BTU; 

ii. The valve shall comply with all construction and testing requirement of the 

current ANSI Standard Z21 .22; 

iii. The valve shall have minimum one-inch inlet and outlet pipe connections. 

iv. The valve shall be ASME pressure steam rated; and 

v. A temperature water rating, on the basis of 1250 BTU for each gallon per 

hour of water discharged at 30 lbs. working pressure and a maximum temperature 

of 210°F, will be acceptable for the temperature rating for heaters over 200,000 

BTU/Hr. input rating. This rating must be certified by the valve manufacturer 

and must not be more than the ASME rating shown. 

vi The use of a Product-approved polypropylene homopolymer drain tube 

assembly that is designed to be vertically mounted in the downtumed outlet of a 

horizontally mounted relief valve provided that the capacity of the relief valve 

served by the approved drain assembly does not exceed 100,000 BTU per hour. 



3/11/05 



248 CMR - 186 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.14: continued 



5. Vacuum Relief Valves . 

a. Water heaters and storage tanks shall be protected against loss of water from 
siphoning due to loss of supply pressure by a vacuum relief valve installed in the cold 
water supply line at a level above the top of the heater or tank. 

b. Where heating equipment has a bottom supply, the cold water supply piping shall 
be carried above the top of the heater before dropping down to the supply connection 
and have a vacuum relief valve installed in it at a level above the top of the storage 
tank. 

c. The vacuum relief valve shall be in compliance with the Standard ANSI Z21 .22 
at latest issue. 

d. Valves marked with the A.G.A. symbol and listed by the American Gas 
Association Laboratories will be considered in compliance with 248 CMR 10.14. 
Valves shall have minimum '/2-inch diameter orifice and the air inlet opening on any 
vacuum valve shall not be smaller than the nominal pipe size of the valve. 

e. Vacuum relief valves shall be sized to have a cross sectional area equal to a pipe 
not less than one pipe diameter smaller than the tank supply or drain, whichever is 
larger. 

f. Vacuum relief valves may be installed in multiples. 

(12) Boiler Laws . See M.G.L. c. 142, §§ 17, 18, and 19. 

(13) Disinfection of Potable Water System Piping . When necessary, the Inspector shall require 
that a potable water distribution system, or any part thereof, which has been installed or repaired 
may require disinfection in accordance with one of the following methods before it is placed 
in operation: 

(a) The system, or part thereof, shall be filled with a water and chlorine solution which 
contains 50 parts per million of available chlorine; and the same shall then be allowed to 
stand six hours before the system, or part thereof, is flushed and returned to service. 

(b) The system, or part thereof, shall be filled with a solution which contains 100 parts per 
million of available chlorine; and the same shall then be allowed to stand two hours before 
the system, or part thereof, is flushed and returned to service. 

(c) Where it is not possible to disinfect a potable water storage tank as provided by 
248 CMR 10. 14(13)(a) or (b), the entire interior of the tank shall be swabbed with a solution 
which contains 200 parts per million of available chlorine; and the solution shall then be 
allowed to stand two hours before the tank is flushed and returned to service. For a potable 
water filter or similar device, the Massachusetts Department of Environmental Protection 
shall determine the dosage. 



10.15: Sanitary Drainage System 



(1) Materials . Pipe, tubing, fittings, and traps to be used on any part of the sanitary drainage 
system in a building or adjacent to a building shall comply with all relevant sections of 
248 CMR, 3.00: through 10.00. 

(2) Detennining Size of Drainage System . 

(a) Fixture Units for Drainage Piping . The waste discharge calculations for the drainage 
system piping shall be computed in terms of drainage fixture units in accordance with 
24^ CMR 10. 15, Table 1 : Fixture Unit Values for Various Plumbing Fixtures and 248 CMR 
10.15(2)(b). 

(b) Values for Continuous Flow . Fixture unit values for continuous or semi-continuous 
flow into a building sanitary drainage system, such as from a waste pump, sewage ejector 
pump, or similar device that discharges sewage waste shall be computed on the basis of two 
fixture units for each gallon per minute of flow. 



3/11/05 248 CMR -187 



248 CMR; BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.15: continued 



(c) Clear water condensate waste that is produced in cumulative amounts of 12.5 gallons 
per hour or 300 gallons per day or less in buildings by air conditioning equipment, air 
compressor blow-down discharge (free of petroleum hydrocarbons) or other similar apparatus 
or appliances may be discharged to the sanitary drainage system in accordance with 
248 CMR 10. 12(l)(a)4. The clear water waste requirement is not withstanding any local 
ordinance, by-law, rule or regulation to the contrai7. 

(3) Selecting the Size of Drainage Piping . Pipe sizes shall be determined from 248 CMR 
10.15(7); Tables 1, 2 and 3 on the basis of drainage fixture unit values calculated from 
248 CMR 10.15(7): Table]: Fixture Unit Valvesfor Various Plumbing Fixtures and24S CMR 
10.15(2)(b). 

(4) Minimum Size of Soil and Waste Stacks . No soil or waste stack shall be smaller than the 
largest horizontal waste branch connected thereto, {See 248 CMR 10.15(7): Table T. Fixture 
Unit Values for Various Plumbing Fixtures and 248 CMR 10. 15(7): Table 3: Maximum Loads 
in Fixture Units for Any One Branch Inter\>al on Multistory Soil and Waste Stacks). Exception: 
a 4 X 3 toilet connection shall not be considered as a reduction in pipe size. 

(5) Minimum Size of the Stack Vent or Vent Stack . Any structure, in which a building drain 
is installed, shall have as a minimum one stack vent or a vent stack not less than three inches in 
diameter, {See 248 CMR 10. 16(7): Table 2: Size and Lengths of Vents for fixture unit values 
when determining appropriate stack vent or vent stack sizing) that shall be carried undiminished 
in size through the roof. 

(6) Provision for the Installation of Future Fixtures . 

(a) When future drainage provisions are employed for the potential installation of other 
fixtures, the drains provided shall be considered in determining the final required sizes of 
drains and vent pipes. 

(b) The future drain installations, (if provided) shall be terminated with approved 
material(s) and fittings. 

(7) Size of Underground Drainage Piping . 

(a) Underground or Basement Floor . No portion of the drainage system installed 
underground or below a basement floor, shall be less than two inches in diameter. 

(b) Sanitary Piping Installed Through the Foundation Wall . 

1 . Sanitary pipes that pass through an exterior foundation wall shall be no less than four 
inches in diameter, except: 

a. When serving a Hazardous Waste System installed in accordance with (248 CMR 
10.13). 

b. When serving a ^domestic laundry, wherein the laundry drain is conducted to a 
separate (Lx>cal Board of Health Authorized) dry-well disposal system and may be 
two inches in diameter. 

c. When serving as the waste for a *church Sacrarium, wherein the church 
Sacrarium drain may be two inches in diameter {see 248 CMR 10. 10(16)). 

d. When serving exclusively as the discharge from a semi-positive displacement 
grinder pump, and if so, the following shall be satisfied: 

i. The minimum pipe size for a semi-positive displacement grinder pump 

discharge shall be IVi-inch and shall provide a self cleaning velocity of no less 

than two feet per second. 

ii. The velocity in the pipe shall not be more than seven feet per second. 

iii. A full port discharge valve and check valve shall be provided and made 

accessible inside the building. 

iv The waste discharge from semi-positive displacement grinder pumps shall be 

protected from freezing when the piping is installed less than four feet below 

grade in outside locations. 



3/11/05 248 CMR -188 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.15: continued 



TABLE 1 
FDCTURE UNIT VALUES FOR VARIOUS PLUMBING FIXTURES 



Type of fixture or group of fixtures 


Fixture Unit Value 


Automatic clothes washer (IVi-inch standpipe) 


2 


Automatic clothes washer (2-inch standpipe) 


3 


Bathroom group consisting of a toilet, lavatory and bathtub or 
shower stall: 






Flushometer valve closet 


8 


Tank type closet 


6 


Bathtub' (with or without overhead shower) 


2 


Bidet 


3 


Combination sink and drain board with food waste grinder 


4 


Combination sink and drain board with one l'/2-inch trap 


2 


Combination sink and drain board with separate IVz-inch traps 


3 


Vegetable Prep Sink (Residential or Commercial) 


2 


Dental chair unit or cuspidor 


1 


Dental lavatory 


1 


Drinking fountain 


1/2 


Dishwasher, commercial 


6 


Dishwasher, domestic 


1 


Trough or trench drain 3 -inch 


5 


Trough or trench drain 4-inch 


6 


Floor drains^ with 2-inch waste 


3 


Kitchen sink, domestic, with one IVi-inch waste 


2 


Kitchen sink, domestic, with food waste grinder 


2 


Lavatory with IV^-inch waste 


1 


Laundry Utility sink (1, 2 or 3 compartments) 


2 


Shower stall, domestic 


2 


Showers (group) per head 


2 


Sinks: 




Surgeons 


3 


Flushing rim (with valve) 


6 


Service (trap standard) 


3 


Service (P trap) 


2 


Commercial Pot, scullery, etc. (each section) 


4 


Shampoo 


2 


Toilet, tank operated 


4 


Toilet, valve operated 


6 


Urinal, pedestal, siphon jet blowout 


6 


Urinal, wall lip 


4 


Wash sink (circular or multiple) each 20 inches of usable length 


1 


Unlisted fixture drains or trap size: 




Wa inch or less 


1 


P/z inches 


2 


2 inches 


3 


2V2 inches 


4 


3 inches 


5 


4 inches 


6 



Note 1 : A showerhead over a bathtub does not increase the fixture value. 

Note 2: See 248 CMR 10. 15(2)(b) for method of computing fixture unit values of devices with continuous 

or semi-continuous flows. 

Note 3: The size of floor drains shall be determined by the area of the floor surface to be drained in 

accordance with 248 CMR 10. 10( 10)(a). 



3/11/05 



248 CMR -189 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.15: continued 



TABLE 2 
MAXIMUM LOADS IN FIXTURE UNITS FOR HORIZONTAL DRAINS (F.U.) 



Diameter of 

drain 

(inches) 


Horizontal 

fixture branch' 

(F.U.) 


Building drain or building sewer^ 


Vs inM. 
(F.U.) 


1/4 in./ft. 
(F.U.) 


V2 in./ft. 
(F.U.) 


P/2 


-3 


— 


... 


... 


2 


6 


... 


... 


... 


21/2 


12 


— 


... 


— 


3 


34'-^ 


_.. 


40-^^ 


48'-^ 


4 


160 


180 


216 


250 


5 


360 


390 


480 


575 


6 


620 


700 


840 


1,000 


8 


1,400 


1,600 


1,920 


2,300 


10 


2,500 


2,900 


3,500 


4,200 


12 


3,900 


4,600 


5,600 


6,700 


15 


7,000 


8,300 


10,000 


12,000 



Note 1: Does NOT include fixture branches to the building drain. 

Note 2: DOES include fixture branches to the building drain. 

Note 3: No more than two toilets or bathroom groups on a horizontal fixture branch nor more than three 

toilets or bathroom groups on a fixture branch of the building drain. 

Note 4: No more than three toilets or three bathroom groups on a three inch building drain. 

TABLE 3 

MAXIMUM LOADS IN HXTURE UNITS FOR SOIL AND WASTE STACKS 

HAVING ONE OR TWO BRANCH INTERVALS 



Diameter of Sack 
(inches) 


Maximum Load on Stack 
(F.U.) 


11/2 


4 


2 


8 


21/2 


20 


3 


48** 


4 


240 


5 


540 


6 


930 


8 


2,100 


10 


3,750 


12 


5,850 


15 


10,500 



**Note 1: Not more than two toilets or bathroom groups within each branch interval nor more than three 
toilets or bathroom groups on the stack. 



3/11/05 



248 CMR - 190 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.15: continued 



TABLE 4 

MAXIMUM LOADS IN FIXTURE UNITS FOR ANY ONE BRANCH INTERVAL 

ON MULTISTORY SOIL AND WASTE STACKS ' 



Diameter 
of Stack 


Number of Branch Intervals 


Load 
Limit for 
all Slacks 




3 


4 


5 


6 


7 


8 


9 


10 


11 


12 


13 


14 


15 




2 

21/2 

3^ 

4 

5 

6 

8 

10 
12 
15 


3 

8 

20 

100 

225 

385 

875 

1,560 

2,435 

4,375 


7 

18 

90 

205 

350 

785 

1,405 

2,195 

3,935 


17 

84 

190 

325 

735 

1,310 

2,045 

3,675 


16 

80 

180 

310 

700 

1,250 

1.950 

3,500 


15 

77 

175 

300 

675 

1,205 

1,875 

3,380 


14 

75 

170 

290 

655 

1,170 

1,825 

3,280 


13 

73 

165 

285 

640 

],]40 

1,790 

3,210 


12 

72 

162 

280 

630 

1,125 

1,755 

3,150 


11 

71 

159 

275 

620 

1,1)0 

1,730 

3,110 


10 

70 

157 

271 

612 

1,095 

1,705 

3,060 


10 

69 

156 

268 

606 

1,080 

1,685 

3,030 


10 

68 

154 

266 

600 

1,075 

1,670 

3,000 


10 

68 

153 

263 

594 

1,062 

1,655 

2,975 


10 

28 

1023 

530 

1,400 

2,900 

7,600 

15,000 

26,000 

50,000 




'These limits are applicable only when the maximum load within any one branch interval is not greater than 

2 J where N= permissible load on a stack of one or two branch intervals, and n = number of 

^~(~)'^(^~:) branch intervals on the stack under consideration 
2?i 4 

^There shall not be more than two toilets or bathroom groups within each branch interval nor more than three 
toilets or bathroom groups on the stack. 

^The formula contained in footnote 1 does not apply to three inch stacks. For three inch stacks above. 15 
branch intervals, no single interval shall exceed more than ten fixture units. 

N N 
Max. Fixture Units Connected = — + — 

2n 4 

E.G. Find the maximum number of fixture to the branch units which can be connected to a four inch stack 
at any branch interval. 



Max, Fixture Units Connected = 



240 240 



4 



= 12 + 60 = 72 



2(10) 

(8) Sizing of Offsets on Drainage Piping . 

(a) Offsets of45° or Less . 

1. An offset in a vertical stack with a change of direction of 45° or less from the 
vertical, may be sized as a straight vertical stack. 

2. In the event of a horizontal branch connects to the stack within two feet above or 
below the offset, a relief vent shall be installed in accordance with 248 CMR 10. 16(5)(c). 

(b) Offsets of More than 45° . A stack with an offset of more than 45° from the vertical 
shall be sized as follows: 

1. The portion of the stack above the offset shall be sized as for a regular stack based 
on the total number of fixture units above the offset. 

2. The offset shall be sized as for a building drain as shown in 248 CMR 
10.15(7): Table 2: Maximum Loads in Fixture Units for Horizontal Drains. 

3. The portion of the stack below the offset shall be sized as for the offset or based on 
the total number of fixture units on the entire stack, whichever is the larger. 

4. In buildings of five stories or more, a relief vent for the offset shall be installed as 
provided elsewhere in 248 CMR 10.16(5)(c) and in no case shall a horizontal branch 
connect to the offset or to the stack within two feet above or below the offset. 

(c) Above Highest Branch . An offset above the highest horizontal branch is an offset in the 
stack-vent and shall be considered only as it affects the developed length of the vent. 



3/11/05 



248 CMR -191 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



10.15: continued 



(d) Below Lowest Branch . In the case of an offset in a soil or waste stack below the lowest 
horizontal branch, there shall be no change in diameter required if the offset is made at an 
angle of less than 45°. If such an offset is made at an- angle greater than 45° to the vertical, 
the required diameter of the offset and the stack below it shall be determined as for a building 
drain in 248 CMR 10.15(7): Table 2. 

(e) Open Parking Garages . 

1. The drainage system of open parking garages which are subject to freezing 
temperatures including open parking garages in which floor drains are installed, may 
exclude the use of traps. 

2. Traps and their associated vents may be eliminated however, stacks shall be installed 
in accordance with 248 CMR 10. 1 6(6)(a). 

3. The maximum distance between stacks shall not exceed 60 feet intervals. 

(9) Drainage Piping Installations . 

(a) See 248 CMR 10.05: General Regulations for the following: 

1 . Pitch of horizontal piping. 

2. Fittings used to change direction. 

3. Prohibited fittings. 

4. Heel or side inlet bends. 

5. Obstructions to flow. 

6. Dead ends. 

(b) Kitchen Sink Wastes (Domestic) . 

1 . Not less than a Wi inch branch waste or waste outlet shall be provided to receive the 
fixture drain from a kitchen sink, which shall connect independently to the sanitary 
drainage system. 

2. A kitchen sink shall not waste into any horizontal drain line that receives the waste 
fi*om a bathtub or similar flat bottom fixture that is smaller than three inches in diameter. 

(c) Roughing — Food Waste Disposer . 

1 . The fittings used in all sanitary drainage systems which receive the fixture waste from 
a kitchen sink, shall be installed at a height to permit the installation of a food waste 
disposer, (approximate height 12 inches through 15 inches above the finished floor). 

2. The fitting shall be installed notwithstanding the installation of the food waste 
disposer. 

(d) Kitchen Sink Clean-outs . 

1 . An end or dandy clean-out fitting the same size as the drain to which it connects shall 
be installed under all kitchen sinks. 

2. A two-piece trap that can be disassembled to clean this drain may be used in Heu of 
the clean-out. 

(e) Laundries in Multi-Story Buildings . 

1. Where laundries are installed in buildings with more than three Branch intervals, 
laundries shall be connected to an independent laundry stack. 

2. The independent laundry stacks shall connect to a independent laundry main drain. 

3. The independent laundry main drain shall connect to the building drain a minimum 
of 40 pipe diameters upstream and downstream of any soil or waste stack. 

4. A suds relief vent shall connect to the laundry main drain a minimum of 40 pipe 
diameters downstream from the base of the laundry stack. The suds relief vent shall 
coimect to a vent a minimum of two branch intervals above the base of the laundry stack. 
{See 248 CMR 10.22, Figure 19: Illustration of Laundries in Multi-story Buildings.) 

5. The Inspector may permit a variation from the above requirements when conditions 
will not allow compliance. 

(10) Sumps and Ejectors . 

(a) Building Drains Below Building Sewer . 

1 . Building drains that cannot be discharged to the sewer by gravity flow shall be 
discharged into a tightly covered and vented sump, from which the contents shall be 
lifted and discharged into the building gravity drainage system by automatic pumping 
equipment or by any equally efficient method approved by the Inspector. 



3/11/05 248 CMR -192 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.15: continued 




2. Only drains located below the building sewer or building drain shall discharge into 
sumps. All other drains shall be discharged by gravity. 

(b) Design of Sumps and Ejectors . Sump and pumping equipment shall be so designed: 

1. as to discharge all contents accumulated in the sump during the cycle of emptying 
operation; and 

2. so that the storage of drainage in a sump or ejector does not exceed 12 hours. 

(c) Duplex Equipment . Sumps or ejectors, in other than one or two family houses or 
residences, receiving the discharge of six or more toilets shall be provided with duplex 
pumping equipment. 

(d) Drainage Pipe Venting . The system of drainage piping below the sewer level shall be 
installed and vented in a like manner to that of the gravity system to conform with 248 CMR 
10.16. 

(e) Prohibited Connections to Discharge Pipe . No fixtures or drains shall be connected to 
the sewage discharge pipe from an ejector or pump between the ejector or pump and the 
point where it enters the building drainage system or sewer. 

(f) Drainage Backflow Prevention . 

1. All sumps and ejectors shall be protected against backflow and backpressure from 
the building sewer or building drain by installing a backwater or check valve in the 
discharge pipe from the ejector or sump pump. 

2. This required backflow protection shall also comply with 248 CMR 10.15(1 1). 

(g) Size of Sumps and Pumps . 

1 . All sumps shall have a holding capacity sufficient to meet the demand of a period not 
to exceed 12 hours. 

2. In single-family dwellings, a sewage ejector sump receiving the discharge of toilets 
and other fixtures shall be equipped with a sewage ejector pump that provides a 
minimum discharge capacity of 20 gallons per minute. 

3. In all installations other than single-family dwelling, sewage ejector pumps shall be 
sized in conformance with 248 CMR 10.15(10): Table 5: Determining Capacities of 
Sewage Ejections. 

4. To calculate the capacities of pumps used in Sewage Ejectors, it is recommended that 
the following procedures be used in all types of building occupancies. The safety factors 
included in 248 CMR 10.15(10): Table 5: Determining Capacities of Sewage Ejections 
are sufficient for all installations. Any installation that does not meet the requirements 
of this Table shall require Special-permission from the Board. 



TABLE 5 
DETERMINING CAPACITIES OF SEWAGE EJECTORS 



Number of toilets to be 
Served by each Ejector 


G.P.M. Discharge of each 
Pump 


1 


20 


2-3 


75 


4-5 


100 


6-7 


125 


8-10 


150 


11-15 


200 


16 - 20 


250 


21-25 


300 


26-30 


350 


31-35 


375 



Ejectors Handling Other Fixtures . 

i. Generally, there will be a certain amount of fixtures other than toilets 

emptying into the ejector sump. 

ii. If the total amount of these fixtures exceed four times the amount of toilets 

used, the G.P.M. of the ejector pump should be increased at the rate of three 

G.P.M. for each fixture in excess of four times the amount of toilets. 



3/11/05 



248 CMR - 193 



10.15: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



b. EXAMPLE: 




GPM Pump Discharge of four Toilets 


100 GPM 


Number qf additional fixtures to be handled 


20 


Excess Fixtures as calculated from above 20 - (4 x 4) = 4 


4 


Four @ 3 GPM 


12 GPM 


Correct Sewage Ejector Pump to use 


112 GPM 



(h) Individual Sink Fixture Pumps . 

1 . Individual fixtures other than toilets, urinals or similar fixtures may discharge directly 
into: 

a. a fixture mounted pump; or 

b. into sumps and receivers with ejectors or pumps. 

2. The waste discharge piping from the individual fixture pump shall have a check valve 
to prevent the discharged waste from returning to the pump or receive]'. 

3. Individual fixture pumps may be used for sinks that are located below the building 
drain. 

4. Individual fixmre pumps may be used for sinks when unusual building structure 
conditions prevent the discharge of liquid waste by gravity. 

5. Direct-mounted individual fixture pumps may be manually or automatically operated. 

6. The individual fixture pumps shall be vented in accordance with the manufacturer's 
instructions. Individual fixture pumps may provide an adequate water seal in accordance 
with 248 CMR 10.03 additional traps may not be required. 

(11) Backwater Valves . 

(a) Fixture Subject to Backflow . 

1 . A backwater valve shall be installed in a branch of the building drain which receives 
the discharge from a fixture or group of fixtures that is subject to reverse flow or 
backpressure. 

2. Back Water Valves on Storm Drain Systems . A back water valve shall be installed 
in a branch of the building storm drain that serves lower roof areas in accordance with 
248 CMR. 10.22: Figure 23: Illustration of Combination of Upper and Lower Roof 
Drain Installations. 

(b) Materials for Backwater Valves . Backwater valves shall have all bearing parts of 
corrosion-resistant material. 

(c) Construction of Backwater Valves . Backwater valves shall be constructed so a 
mechanical seal against backflow will be provided. 

(d) Diameter of Backwater Valves . Backwater valves, when fully opened shall have an 
effective opening not less than that of the pipes to which they are installed. 

(e) Location of Backwater Valves . Backwater valves shall be installed so their working 
parts will be readily accessible for service and repairs. 

(f) Approval of Backwater Valves . In lieu of an acceptable standard for backwater valves, 
substitutes may be used after being Product-approved by the Board under 248 CMR 3.04. 




10.16: Vents and Venting 



(1) Materials . 

(a) Above and Below Ground . All pipe and fittings to be used on the venting system, or any 
part thereof, shall comply with 248 CMR 10.06. 

(b) Chemical Waste Systems . Vent piping on chemical and corrosive waste systems shall 
conform to that required for Hazardous Wastes under 248 CMR 10.13. 

(2) Bow Vents . 

(a) Bow vents are permitted for fixture installations in island cabinets and peninsula 
cabinets that cannot be vented in a conventional manner. 

(b) The bow vent shall be sized in accordance with 248 CMR 1 0. 1 6( 1 6): Table 2: Size and 
Lengths of Vents. 

(c) The installation should conform to 248 CMR 10.22: Figures 13(a), (b) or (c). 



3/11/05 248 CMR -194 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.16: continued 



(3) Prohibited Venting . 

(a) Combination Waste and Vent . A combination waste and vent system shall not be used 
unless no other system is possible or practicable, and only then after Special Permission is 
granted by the Board. See 248 CMR 10.16(15)(a) 

(b) Crown Venting Limitation . No vent shall be installed within two pipe diameters of the 
trap weir. 

(c) Extension of Horizontal Drain . The extension or continuation of a horizontal soil or 
waste drain pipe shall not serve as a vent, except: 

1. when permitted under wet venting 248 CMR 10.16(7), or 

2. when a fixture waste of not more than two fixture units is connected to the vertical 
extension of the extended horizontal piping. 

(d) Below Trap Weir . 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. 

(e) Use Other than Venting . The sanitary vent system shall not be used for purposes other 
than the venting of the plumbing system. 

(4) Protection of Trap Seals . The protection of trap seals from siphonage, aspiration, 
momentum, oscillation, backpressure, evaporation, or capillaiy action shall be accomplished by 
the appropriate use of soil or waste stacks, vents, re-vents, back vents, dry vents, wet vents, loop 
vents, circuit or continuous vents, or combinations thereof, installed in accordance with the 
requirements of 248 CMR 10.16, so that at no time shall the trap be subjected to a pressure 
differential of more than one inch of water. 

(5) Vent Stacks and Stack Vents . 

(a) Vent Stack Required . 

1 . Any structure, in which a building drain is installed, shall have as a minimum one full 
size main stack vent or a vent stack no less than three inches in diameter. Buildings that 
incorporate three or more branch intervals in which plumbing is installed shall have no 
less than one main vent stack, {See 248 CMR 10.15(5)) that shall run undiminished in 
size and as directly as possible, from the building drain through to the open air above the 
roof or connect back to a main stack vent six inches above the flood level rim of the 
highest fixmre being served. 

2. A vent stack or a main vent shall be installed with a soil or waste stack whenever 
back vents, relief vents, or other branch vents are required. 

(b) Connections at Base and Top . 

1 . All main vents or vent stacks shall connect full size at their base to the drainage of 
the building or to the main soil or waste pipe, at or below the lowest fixture branch. 

2. All vent pipes shall extend undiminished in size above the roof, or shall be 
reconnected with the main soil or waste stack above the highest fixture connection 
discharging into it. The minimum size of any vent through the roof shall be two inches 
in diameter. 

(c) Offsets in Building Five or More Stories . 

1. Except as provided in 248 CMR 10.15, offsets of more than 45° from the vertical 
in a soil or waste stack may be vented: 
a. as two separate soil or waste stacks; 

i. by installing a relief vent as a vertical continuation of the lower section of the 

stack; or 

ii. as a side vent connected to the lower section between the offset and the next 

lower fixture or horizontal branch. 

ii. The upper section of the offset shall be provided with a yoke vent. 

iv. The diameter of the vents shall not be less than the diameter of the main 

vent, or of the soil and waste stack, whichever is the smaller. 

(d) Vent Headers . 

1 . Where vent stacks and stack vents connect to a vent header, the connections shall be 
made at the top of the stacks. 



3/11/05 248 CMR -195 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.16: continued 



2. The vent header shall connect to a vent extension through the roof. 

3. When more than two four-inch soil or waste stacks are connected the vent header 
extension through the roof shall be five inches in diameter. 

4. When more than four four-inch stacks are connected, the diameter shall be six inches, 
(e) Relief Vents for Vents of More than Ten Branch Intervals . 

1 . Soil and waste stacks in buildings having more than ten branch intervals shall be 
provided with a relief vent at each tenth interval installed, beginning with the top floor. 

2. The size of the relief vent shall be equal to the size of the vent stack to which it 
connects. 

3. The lower end of each relief vent shall connect to the soil or waste stack through a 
wye below the horizontal branch serving the floor and the upper end shall connect to the 
vent stack through a wye not less than three feet above the floor level. 

(6) Vent Terminals . 

(a) Extension Above Roof . 

1 . The vent extension through a roof shall be no less than two inches in diameter and 
shall extend not more than 24 inches and not less than 1 8 inches through the roof. 

2. If the roof area is used for gardening a parking deck, observation deck or similar 
purposes the vent shall extend no less than eight feet above the roof and be increased one 
pipe diameter. 

3. Increaser . The change in the diameter of a vent teraiinal shall be made by the use of 
an increaser; and occur no less than one foot below the roof surface. 

(b) Waterproof Flashings . Each vent terminal shall be made watertight with the roof by 
proper flashing. 

(c) Flag Poline Prohibited . Vent terminals shall not be used for the purpose of flag poling, 
TV aerials, or similar purposes. 

(d) Location of Vent Terminal . 

1 . No vent terminal shall be located: 

a. directly beneath any door, window, or other ventilating opening of the building 
or of an adjacent building; 

b. within ten feet horizontally of such an opening unless it is no less than two feet 
above the top of such opening. 

2. Plumbing vent terminals shall be located no less than 25 feet horizontally from all 
fresh air intakes. 

3. Plumbing vents that terminate no less than two feet above the top of the fresh air 
intake may be located as close as ten feet, 248 CMR 10. 1 6(6)(a) does not apply in this 
case. 

(e) Vent Extensions Outside of the Building . 

1 . All soil, waste or vent pipe extensions shall be installed inside the building. 

2. For remodeling and alteration work only, vents may be installed outside the building 
with prior permission of the Inspector and when all other means of venting have been 
eliminated or are not practical. 

(f) Frost Closure . Where frost closure is likely to occur, each vent extension through a roof 
shall be at least three inches in diameter. 

(7) Vent Grades and Connections . 

(a) Vent Grade . All vent and branch vent pipes shall be uniformly graded in accordance 
with 248 CMR 10.05(2) and connected as to drain back to a soil or waste pipe by gravity. 

(b) Vertical Rise . 

1 . Where vent pipes connect to a horizontal soil or waste pipe: 

a. The vent shall be taken off above the center line of the soil or waste pipe drain. 

b. The vent pipe shall rise vertically, or at an angle of 45° from the vertical, to a 
point at least six inches above the flood-level rim of the fixture it is venting, before 
it may offset horizontally. 

2. If it is not possible or practical to vent the fixture trap as required in 1 0. 1 6(7)(b) 1 . : 
a. A vent serving a floor drain, floor sink, or similar floor mounted fixture may be 
extended horizontally above the centerline of the drain of the fixture to the nearest 
practical location where it can rise vertically. 



3/11/05 248 CMR -196 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 




10.16: continued 



b. The vent shall connect to soil or waste pipe above the centerline of the drain not 
less than 45° from the horizontal before running in a horizontal position, 
(c) Height Above Fixtures . 

1 . All connection between a vent pipe and a vent stack or stack- vent shall be made at 
least six inches above the flood-level rim of the highest fixture served by the vent. 

2. Horizontal vent pipes fonning branch vents, relief vents, or loop vents shall be 
installed at least six inches above the flood-level rim of the highest fixture served. 

(8) Wet Venting . 

(a) Wet venting of fixture traps as hereinafter described may be used provided that the entire 
sanitary waste and vent piping system meet all other code requirements of 248 CMR 3.00 
through 10.00. 

(b) Bathtub or Shower Wet Vent . Li a single bathi-oom having a common horizontal waste 
for a lavatory and bathtub, a two inch waste and vent for the lavatory may serve as a wet vent 
for the bathtub or shower. 

(c) Double or Back to Back Bath Installations . In a double bathroom having a common 
horizontal waste for lavatories and baths, a two inch waste and vent for the lavatory may 
serve as a wet vent for the baths. 

(d) Miscellaneous Wet Venting . 

1. A two inch or larger waste pipe installed with drainage fittings may sei've as a wet 
vent. 

2. The lowest portion of this horizontal pipe serving as the wet vent shall be above the 
top or above the center line of the horizontal drain it serves except as specifically 
prohibited in 248 CMR 10.16(8)(e). 

3. Toilets in a bathroom below the top floor need not be individually vented if the two 
inch wet vented waste, serving the lavatories and bath tubs or showers connect directly 
to the horizontal portion of the fixture branch for the toilet by breaking the centerline or 
connect above the centerline of the horizontal fixture drain servicing the toilet. 

(e) Piping Not to Serve as Wet Vents . A waste and vent that serves a kitchen sink, a 
garbage disposal, a dish washer, or other fixture installed for culinary use, or one that 
receives the discharge from a clothes washing machine may not serve as a wet vent for any 
other fixture. 

(9) Stack Venting . 

(a) Plumbing Fixtures at the Top Interval of a Stack . 

1 . Plumbing fixtures at the highest level may enter into a three-inch soil or waste stack. 

2. The continuations of the three-inch soil or waste stack as a vent through the roof or 
re-vented into the vent system above the highest fixture shall be accepted, provided that: 

a. all such fixtures shall enter said stack independently; 

b. the waste pipe from all fixtures shall have a pitch of not more than 14-inch pitch 
per foot; 

c. the toilet and bathtub or shower drain connect to the stack at the same level; and 

d. the traps from all fixtures shall be placed in compliance with 248 CMR 
10.16(12): Table r. Distance of Fixture Trap from Vent. 

(b) Stack Venting . Provided there is a soil and/or waste stack in a building as required 
under 248 CMR 10.16(5)(a), the continuation in an upwards direction of the vertical waste 
for a toilet may be reduced to two inch and serve as the vent for the toilet and the waste for 
a lavatory, bath tub or shower stall, and a kitchen sink. 

(c) Back to Back Installation (Stack Vented*) . Bathroom groups installed back to back shall 
be permissible provided they comply with the provisions of 248 CMR 10.16(9)(a). 

(10) Common Vents . 

(a) Individual Vent as Common Vent . An individual vent, installed vertically, may be.used 
as a conmnon vent for two fixture traps when both fixture drains connect with a vertical drain 
at the same level. 

(b) Side by Side . If two bathtubs or similar flat bottom fixtures are installed back to back 
or side by side, a common vent may be used in a vertical position to serve as the vent for both 
fixtures. 



3/11/05 248 CMR -197 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.16: continued 



(c) Different Levels . A vertical vent may be used for two fixtures that are located in the 
same branch interval but connected to the stack at different levels, not exceeding ten inches 
center to center, provided: 

1 . The vertical drain is one pipe diameter larger than the upper fixture drain but is not 
smaller than the lower fixture drain, whichever is the larger. 

2. That both wastes for said fixtures conform to 248 CMR 10.16(12): Table 1: Distance 
of Fixture Trap from Vent. 

(d) Fixtures Back-to-back . Two fixtures set back-to-back, within the distance allowed 
between a trap and its vent, may be served with one continuous soil or waste vent pipe, 
provided that each fixture wastes separately into a double sanitai^ drainage tee fitting having 
inlet openings at the same level. 

(e) Horizontal Waste Branch . 

1 . Two lavatories or similar fixtures installed adjacent or back-to-back within six feet 
of a main vented stack, proper wet vent, or continuous waste and vent, may be installed 
on a two inch horizontal waste branch without re-venting, provided: 

a. the horizontal waste branch is not less than two inches throughout its entire 
length; and 

b. the fixture wastes are connected into the side center of the branch. 

2. Back-to-back waste connections shall be through fittings with sufficient directional 
flow design to assure separate enti'ance of each waste into the horizontal branch. 

3. The branch waste shall connect with its stack at a grade of not more than 14-inch per 
foot. 

(11) Circuit and Loop Venting . 

(a) Battery Venting . 

1 . A horizontal branch drain soil or waste pipe may be vented by a circuit or loop vent 
that shall be installed downstream of the last fixture connection of the battery if the 
horizontal branch drain soil or waste pipe: 

a. is uniformly sized; and 

b. has connected to it two, but not more than eight floor outlet toilets, pedestal 
urinals, trap standard to floor fixtures, shower stalls, shower ba^es or floor drains, or 
any combination thereof, that are connected in battery and, discharge into the side 
and center of the horizontal battery branch drain. 

2. In addition, lower floor branches serving fixtures as described above in 248 CMR 
10.1 6(1 )(b), shall be provided with a relief vent installed downstream of the first fixture 
connection of the battery and shall connect at the top of the horizontal battery branch 
drain to the circuit or loop vent. 

3. Where only two fixtures that are battery waste and vented are installed on the same 
branch, a relief vent as described above shall not be required. 

4. When wall hung or wall outlet fixtures such as urinals, lavatories or similar fixtures 
discharge into the horizontal battery branch, the fixture waste from these fixtures shall 
be individual or common vented. (See 248 CMR 10.22: Figure 8: Illustration of 
Battery Circuit Vent Multiple Floors and 248 CMR 10.22: Figure 9: Illustration of 
Battery Loop Vent Multiple Floors). 

5. Batteries of more than eight fixtures as described in 248 CMR 10.16(1 l)(a)l.b. may 
be installed, providing a vent as described above is installed for each eight or less of the 
fixtures so connected. 

(b) Dual Branches . When parallel branches serve fixtures as described in 248 CMR 
10.16(1 l)(a) all of the provisions and requirements of 248 CMR 10.16(1 l)(a) shall prevail, 
except that the fixture connections to each parallel horizontal branch shall be limited to 50% 
of the fixture connection permitted on a horizontal branch in 248 CMR 10.16(1 l)(a). 

(c) Vent Connections . When the circuit, loop or relief vent connections are taken off the 
horizontal branch, the vent branch connection shall be taken off at a vertical angle above the 
centerline of the drain or from the top of the horizontal branch. 

(d) Fixtures Back-to-back in Battery . When fixtures are connected to one horizontal branch 
thi'ough a sanitary tee installed in a vertical position: 

1. A common vent for each two fixtures back-to-back or double connection shall be 
considered acceptable. 



3/11/05 ' 248 CMR -198 



10.16: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



2. The common vent shall be installed in a vertical position as a continuation of the 
double fixture connection. 



(12) Fixture Vents . 

(a) Distance of Trap from Vent . Each fixture trap shall have a protecting vent so located 
that the slope and the developed length in the fixture drain from the trap weir to the vent 
fitting are within the requirements set forth in 248 CMR 10.16(12): Table J: Distance of 
Fixture Trap from Vent. 

TABLE ] 
DISTANCE OF FIXTURE TRAP FROM VENT 



Size of Fixture Drain, 
Inches 


Distance Trap to Vent, 
Feet 


V/2 


5' 


2 


6- 


3 


8' 


4 


10' 


slope not to exceed Vi-inch per foot 




(b) Venting of Fixture Drain Below Trap . 

1 . The vent pipe openings from a soil or waste pipe, except for toilets and similar 
fixtures, shall not be below the top weir of the trap. 

2. An exception to 248 CMR I0.16(12)(b) will be permitted if the following 
requirements are satisfied: 

a. The fixture has a flat bottom with a minimum area of 144 square inches. 

b. The horizontal section of the fixture waste must comply with 248 CMR 
10.16(12): Table 1: Distance of Fixture Trap from Vent and the vertical section 
shall be at least one pipe size larger than the fixture trap and waste arm. 

c. The vent opening shall be as high and close to the fixture as possible and the vent 
piping shall be installed to comply with 248 CMR ,10. 16(7). 

(c) Floor-mounted Fixture Outlet . 

1 . When installing the piping for a floor outlet type toilet or similar fixture, the vertical 
piping distance shall not exceed 20 inches from the finish floor of the fixture served to 
the center line of the horizontal drain serving such fixture. 

2. If the vertical distance exceeds 20 inches the fixture shall be individually vented. 

(13) Size and Length of Vents . 

(a) Size of Individual Vents . The minimum diameter of an individual vent shall be not less 
than 1 Vi-inch nor less than Vi the diameter of the drain to which it connects. 

(b) Size of Relief Vents . Thediameterof a relief vent shall be not less than V^z the diameter 
of the soil or waste branch to which it connects when fixtures are battery connected. 

(c) Size of Circuit or Loop Vents . The diameter of a circuit or loop vent shall be not less 
than V2 the diameter of the soil or waste branch to which it connects when fixtures are battery 
connected. 

(d) Length and Size of Vent Stacks . The length and size of the vent stack or main vent shall 
be based on the total fixture units and its developed length from the lowest connection of the 
vent system with the soil stack, waste stack, or building drain, to the vent stack terminal to 
the open air. 

(e) Size of Vents . The vent pipe sizes shall be determined from their developed length and 
the total number of fixture units connected thereto, as listed in 248 CMR 10.16(16): Table 
2: Size and Lengths of Vents. This table shall be used to size all vents, except for those vents 
that are specifically sized elsewhere in 248 CMR 1.00 through 10.00. 



3/11/05 



248 CMR - 199 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.16: continued 



(14) Future Venting . 

(a) In the basement of every building there shall be an accessible future vent connection. 

(b) Buildings that require a main vent stack shall have a future vent connection full size of 
the vent stack. In all other buildings (including residential) there shall be a minimum of a 
two inch future vent connection. 

(c) All future vent connections shall be drip connected identified and labeled "Future 
Vent". 

(15) Combination Waste-and-vent System . Special Permission Required. See 248 CMR 
3.04(3)(b). 

(a) A combination waste-and-vent system is limited to the installation of floor drains and 
sinks. 

(b) A combination waste-and-vent system consists of a wet vented mstallation of waste 
piping in which fixture drains are not individually vented. 

(c) Every drainage pipe in a combination waste-and-vent system shall be not less than two 
pipe sizes larger than the size required in 248 CMR 10. 15. 

(16) Venting of Sumps and Ejectors . 

(a) Size of Vents . Thesizeandlengthof all vent pipes serving building sanitary sumps and 
ejectors shall be determined from, and in accordance with 248 CMR 10.16(16): Table 3: 
Size and Lengths of Sump Vents. 

(b) Pneumatic Ejector . 

1. The air pressure relief pipe from a pneumatic ejector shall not be connected to the 
regular venting system, but shall be vented independently to the atmosphere through the 
roof. 

2. The relief pipe shall be of sufficient size to relieve air pressure inside ejector 
atmospheric pressure within ten seconds, but shall be not less than one inch in diameter. 

(c) Automatic Vent Fittings . 

1 . The automatic vent fitting shall be installed in the vertical position not less than six 
inches above the crown of the trap it serves. 

2. The piping distance from the trap outlet to the automatic vent fitting shall not be 
more than 12 inches, 

3. The tailpiece from the fixture to trap shall not be longer than 12 inches. 

4. The automatic vent fitting shall be installed on the run of a T-Y in the vertical or 
branch of a T-Y in the horizontal with the T-Y installed so the direction of flow is with 
the flow of waste. 

5. The automatic vent fitting shall be installed in a location readily accessible for 
inspection and replacement. It shall never be installed in a concealed location. 

6. Automatic vent fittings are not permitted, except with Special-permission from the 
Board. 

(d) Air Admittance Valves . 

1 . Air Admittance Valves are not permitted, except with Special-perrrussion from the 
Board. 

2. An individual vent, branch vent, wet vent, circuit vent, vent stack, or stack vent shall 
be permitted to terminate with a connection to an air admittance valve. Air admittance 
valves shall be installed in accordance with the manufacturer's installation instructions. 



3/11/05 248 CMR -200 



10.16: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



TABLE 2 
SIZE AND LENGTHS OF VENTS 



Diameter of 

Soil or Waste 

Stack or Branch 

in Inches 


Total Fixture 

Units Connected 

to Stack or Branch 

in Fixture Units 








11/4 


11/2 


2 


2'/2 


3 


4 


5 


6 


8 


10 


W2 


4 


50 


150 


















2 


10 


25 


50 


150 
















2^2 


28 




30 


100 


300 














3 


7 




42 


150 


360 


1040 












3 


21 




32 


110 


270 


810 












3 


53 




27 


94 


230 


680 












3 


102 




25 


86 


210 


620 












4 


43 






35 


85 


250 


980 










4 


140 






27 


65 


200 


750 










4 


320 






23 


55 


170 


640 










4 


530 






21 


50 


150 


580 










5 


190 








28 


82 


320 


990 








5 


490 








21 


63 


250 


760 








5 


940 








18 


53 


210 


640 








5 


1,400 








16 


49 


190 


590 








6 


500 










33 


130 


400 


1,000 






6 


1,100 










26 


100 


310 


780 






6 


2,000 










22 


84 


260 


660 






6 


2,900 










20 


77 


240 


600 






8 


1,800 












31 


95 


240 


940 




8 


3,400 












24 


73 


190 


720 




8 


5,600 












20 


62 


160 


610 




8 


7,600 












18 


56 


140 


560 




10 


4,000 














31 


78 


310 


960 


10 


7,200 














24 


60 


240 


740 


10 


11,000 














20 


51 


200 


630 


10 


15,000 














18 


46 


180 


570 



Note 1: Table 2 shall also apply to the sizing of vents for branch soil and waste lines. 
To determine size of vent, use the following procedure: 

a. Compute total number of fixture units, using 248 CMR 10. 1 5(7): Table 1: Fixture 
Unit Values for Various Plumbing Fixtures and 248 CMR 10. 1 5(2)(b). 

b. Knowing total fixture unit load, refer to 248 CMR 10.15(7): Table 3: Maximum 
Loads in Fixture Units for Soil and Waste Stacks Having One or Two Branch Intervals 
or 248 CMR 10. 15(7): Table 4: Maximum Loads in Fixture Units for any One Branch 
Interval on Multistory Soil and Waste Stacks depending on number of intervals, to 
determine size of stack. 

c. With selected stack size and total fixture unit load refer to 248 CMR 
10.16(16): ■ Table 2: Size ondLengths of Vents and determine size of vent. Follow same 
procedure to determine size of vents for branch soil and waste lines. 



3/11/05 



248 CMR - 201 



10.16: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



TABLE 3 
SIZE AND LENGTHS OF SUMP VENTS' 



Diameter of Drain to 
Sump' 


Diameter of Vent (inches) 




Wa 


\Vi 


2 


2»/2 


3 


4 


5 


6 


8 


10 


12 


2 


23 


52 


290 


















2'/2 


5 


13 


89 


290 
















3 




2 


30 


110 


290 














4 






1 


17 


57 


280 












5 










10 


80 


280 










6 












20 


97 


280 








8 














3 


41 


270 






10 
















1 


53 


250 




12 




















61 


230 



Note 1: Where more than one drain connects to the sump, size vent on the basis of a drain diameter having 

a cross sectional area equal to the sum of the areas of the multiple drains. 

Note 2: The above values provide for a maximum of one inch pressure drop in the system 

10.17: Storm Drains 

(1) Storm Water Drainage to Sewer Prohibited . Storm u/ater shall not be drained into sewers 
intended for sewage only. 

(2) Size of Building Storm Drain . The size of the building storm drainage system including all 
horizontal branches having a slope of Vi inch or less per foot, shall be based upon the maximum 
projected roof or paved surface area to be handled according to 248 CMR 10.17(2): Table 1: 
Size of Horizontal Storm Drains. 

TABLE 1 
SIZE OF HORIZONTAL STORM DRAINS 



Diameter of Drain, 
Inches 


Maximum Projected Roof Area for Storm Drains of Various Slopes 


Ve inch Slope 


Va inch Slope 


Vi inch Slope 


Square Feet 


Squai-e Feet 


Square Feet 


3 




1,160 


1,644 


4 


1,880 


2,650 


3,760 


5 


3,340 


4,720 


6,680 


6 


5,350 


7,550 


10,700 


8 


11,500 


16,300 


23,000 


10 


20,700 


29,200 


41,400 


12 


33,300 


47,000 


66,600 


15 


59,500 


84,000 


119,000 



Note 1 : Table 1 is based upon a maximum rate of rainfall four inches per hour. 

(a) Vertical Storm Conductor . A vertical storm conductor shall be based upon the 
maximum projected roof area to be drained according to 248 CMR 10. 17(2): Table 2: Size 
of Vertical Storm Drain Conductors and Outside Leaders. 



3/11/05 



248 CMR - 202 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.17: continued 



TABLE 2 
SIZE OF VERTICAL STORJVI DRAIN CONDUCTORS AND OUTSIDE LEADERS 



Maximum 
Projected Roof 

Area 
(Square Feet) 


Diameter of Storm 

Conductor or 

Outside Leader 

(Inches) 


Maximum 
Projected Roof 

Area 
(Square Feet) 


Diameter of Storm 

Conductor or 

Outside Leader 

(Inches) 


720 


2 


8,650 


5 


1,300 


IVi 


13,500 


6 


2,200 


3 


29,000 


8 


4,600 


4 








(3) Values for Continuous Flow . Where there is a continuous or semi-continuous discharge 
into the building slorm drain or building storm sewer, as from a condensate pump, ejector, air 
conditioning equipment, or similar device discharging cleaj- water waste, each gallon per minute 
of such discharge shall be computed as being equivalent to 24 square feet of roof ai'ea, (based 
upon a four-inch rainfall.) 

(4) Building Sub-drains . 

(a) Building sub-drains located inside the building below the public gravity storm sewer 
level shall discharge into a sump or receiving tank. 

(b) The contents of the sump or receiving tank shall be automatically lifted and discharged 
into the storm drainage system as required for building sumps. 

(5) Sub-soil Drains . 

(a) When a subsoil drain for a building is subject to backwater: 

1 . An accessibly located backwater valve shall protect the subsoil drain. 

2. Sub-soil drains may discharge into a properly trapped area drain or sump. 

3. Such sumps do not require vents. 

4. Piping used for sub-soil drains shall not be less than four inches in diameter. 

(b) Materials for sub-soil drains shall comply with 248 CMR 10.06 and the following 
requirements shall be satisfied. 

1 . Piping may be either perforated or installed with open joints. 

2. Spigot end lengths shall have joints protected with screens securely fastened to pipes. 

3. Screens and fastenings shall be non-ferrous or other approved corrosion resisting 
material. 

4. Perforated piping shall be installed with sealed joints. 

5. All sub-soil drain piping shall be installed with sufficient pea stone or similar 
aggregate to permit the flow of ground water to the piping. 

(c) Area Drains . 

1 . All area drains shall be connected to the storm water drainage system. 

2. They shall be provided with a trap and back-water valve in an accessible location that 
is not subject to freezing. 

(d) Size of Area Drains . 

1 . Area drains shall be of size to serve efficiently the square foot area for which they are 
intended to drain in accordance with 248 CMR 10.17(2): Table 1: Size of Horizontal 
Storm Drains. 

2. The outlet pipe shall not be less than three inches in nominal diameter. 

(6) Tra ps on Storm Drains and Leaders . 

(a) Where Required . Conductors and storm drains serving low roofs when connected to a 
combined sewer shall be trapped. 

(b) Where Not Required . No traps shall be required for storm-water drains that are 
connected to a sewer carrying storm water exclusively, 

(c) Trap Material . Storm water traps, when required, shall be of cast iron. 

(d) Trap Size . Traps for individual conductors shall be the same size as the horizontal dr^un 
to which they are connected. 



3/11/05 



248 CMR - 203 



248 CMR: BOARD OF STATE EXAAHNERS 
OF PLUMBERS AND GAS FITTERS 



10.17: continued 



(e) Method of Installation . 

1. Individual storm-water traps shall be installed on the storm-water drain branch 
serving each conductor, or a single trap shall be installed in the main storm drain just 
before its connection with the combined building, sewer main, drain, or public sewer. 

2. Conductor traps shall be located so that an accessible cleanout may be installed on 
the building side of the trap. 

(7) Conductors/Leaders and Connections . 

(a) Not to be Used Improperly . 

1. Conductor pipes shall not be used as soil, waste, or vent pipes. 

2. Sanitary drainage or vent pipes shall not be used as conductors. 

(b) Protection of Rain Water Leaders . Rain water leaders installed along alley ways, 
driveways, or other locations where they may be exposed to damage shall be: 

1 . protected by metal guards; or 

2. recessed into the wall. 

(c) Combining Storm with Sanitarv Drainage . 

1 . The sanitary and storm drainage system of a building shall be entirely separate. 

2. Where a combined sewer is available, the building storm sewer may be connected to 
the building sanitary sewer in the same horizontal plane through a single wye fitting to 
form a combined building sewer at least ten feet outside the inside face of the foundation 
wall. 

(d) Offsets . 

1. Offsets of 45° or less from the vertical, and offsets of more than 45° from the vertical 
that do not exceed ten feet in length, shall be sized according to 248 CMR 
10.17(2); Table!: Size of Vertical Storm Drain Conductors and Outside Leaders. 

2. Offsets of more than 45° from the vertical in excess of ten feet shall be sized 
according to 248 CMR 10.17(2): Table 1: Size of Horizontal Strom Drains. 

(8) Roof Drains . 

(a) Material of Roof Drains . Roof drains shall be of cast iron, copper, or other approved 
corrosion-resisting material. 

(b) Roof Drain Strainers . 

1. General Use . 

a. All roof areas, except those draining to hanging scuppers and gutters, shall be 
equipped with roof drain assemblies having strainers that extend not less than four 
inches above the surface of the roof that is immediately adjacent to the roof drain 
assembly. 

b. Strainers shall have an available inlet area, that lays upon the roof level, of not 
less than IV2 times the area of the conductor to which the roof drain assembly is 
connected. 

c. Roof drain assemblies that serve vehicle parking decks oj' that serve the outside 
top level of open parking garages shall convey storm discharge to a independent gas, 
oil and sand interceptor/separator in accordance with 248 CMR 10.09(l)(b) and shall 
discharge to the storm drainage system or other approved method of disposal. 

2. Flat Decks . Roof drain strainers for use on sun decks, parking decks, and similar 
areas, normally serviced and maintained, may be of the flat surface type, level with the 
deck and shall have an available inlet area not less than two times the area of the 
conductor to which the drain is connected. 

3 . Roof Drain Flashings Requu-ed . The connection between roofs and roof drains which 
pass into the interior of the building shall be made watertight by the use of proper 
flashing methods and material. 

(9) Expansion Joints Required . Expansionjoints or sleeves shall be provided where warranted 
by temperature variations or physical conditions. 

(10) Sanitary and Storm Sewers . Where separate systems of sanitary drainage and storm water 
are installed in the same property, the storm and sanitary building sewers and drains may be laid 
side by side in the same trench. 



3/11/05 248 CMR -204 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 




10.18-. Hospital Fixtures 



(1) General . The plumbing system in a hospital shall conform to the following requirements. 

(a) It shall meet the criteria of 248 CMR 10. 1 8. 

(b) It shall conform to all other requirements contained in the body of 248 CMR 3.00 
through 10.00. 

(c) It shall conform to the requirements of the Massachusetts Department of Environmental 
Protection. 

(2) Definitions . 

The following definitions shall be used for 248 CMR 10.18. 

Aspirator . An aspirator is a fitting or device supplied with water or other fluid under positive 
pressure which passes through an integral orifice or "constriction" causing a vacuum. Aspirators 
are often refen'ed to as "suction" apparatus, and are similar in operation to an ejector. 

Autopsy Table . An autopsy table is a fixture or table used for the post-mortem examination of 
a body. 

Bedpan Hopper CClinic Siirky A bedpan hopper is a fixture meeting the design requirements of 
fixture, sometimes called a clinic sink. 

Bedpan Steamer . A bedpan steamer is a fixture used for scalding bedpans or urinals by direct 
application of steam. 

Bedpan Washer . A bedpan washer is a fixture designed to wash bedpans and to flush the 
contents into the soil drainage system. It may also be provided for steaming the utensils with 
steam or hot water. 

Bedpan Washer Hose . A bedpan washer hose is a device supplied with hot and/or cold water 
and located adjacent to a toilet or clinic sink to be used for cleansing bedpans. 

Clinic Sink . 5eeBedpanHopper and 248 CMR 10.1 8(3)(b). 

Flushing Type Floor Drain . A flushing type floor drain is a floor drain which is equipped with 
an integral water supply, enabling flushing of the drain receptor and trap. 

Lx)cal Vent Stack . A local vent stack is a vertical pipe to which connections are made from the 
fixture side of traps and through Nvhich vapor and/or foul air may be removed from the fixture 
or device used on bedpan washers. 

Sterilizer. Boiling Type . A boiling type "sterilizer" is a fixture (non-pressure type) used for 
boiling instruments, utensils, and/or other equipment (used for disinfection). Some devices are 
portable, others are connected to the plumbing system. 

Sterilizer Instrument . See Sterilizer, Boiling Type. 

Sterilizer, Pressure Instrument Washer-Sterilizer . A pressure instrument washer-sterilizer is a 
fixture (pressure vessel) designed to both wash and sterilize instruments during the operating 
cycle of the fixture. 

Sterilizer. Pressure (Autoclave) . A pressure sterilizer is a fixture (pressure vessel) designed to 
use steam under pressure for sterilizing. A pressure sterilizer is also called an Autoclave. 

Sterilizer. Utensil . See Sterilizer, Boiling Type. 



3/11/05 248 CMR -205 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



Sterilizer Vent . A sterilizer vent is a separate pipe or stack, indirectly connected to the building 
drainage system at the lower terminal, which receives the vapors from non-pressure sterilizers, 
or the exhaust vapors from pressure sterilizers, and conducts the vapors directly to the outer air, 
sometimes called vapor, steam, atmospheric or exhaust vent. 

Sterilizer Water . A water sterilizer is a device for sterilizing water and storing sterile water. 

Still . A still is a device used in distilling liquids. 

(3) Fixtures . 

(a) General . Product-approved flush rim bedpan hoppers (clinic sinks), bedpan washers, 
and/or other acceptable fixtures and equipment shall be provided for: 

1 . the disposing of bedpan contents; and 

2. the cleansing and disinfection of bedpans in soiled utility (hopper) rooms. 

(b) Clinic Sink . 

1. A clinic sink shall have an integral trap in which the upper portion of a visible trap 
seal provides a water surface. 

2. The fixture shall be so designed as to permit complete removal of the contents by 
siphon and/or blowout action, and to reseaJ the trap. 

3. A flushing rim shall provide water to cleanse the interior surface. 

4. The fixtures shall have flushing and cleansing characteristics similar to a toilet. 

(c) Prohibited Use of Clinic Sinks and Service Sinks . 

1 . A clinic sink serving a soiled utility room shall not be considered as a substitute for, 
nor shall it be used as a janitor's service sink. 

2. A janitor's service sink shall not be used for the disposal of urine, fecal matter, or 
other human wastes. 

(d) Ice Prohibited in Soiled Utility Rooms . 

1 . No machine for manufacturing ice, or any device for the handling or storage of ice 
shall be located in a soiled utility room. 

2. Machines for manufacturing ice, or devices for handling or storage of ice intended 
for either human consumption or packs, may be located in clean utility room, floor 
pantry, or diet kitchen. 

(4) Sterilizer Equipment Requirements . 

(a) De-scaling of Equipment Prohibited . It shall be unlawful to de-scale or otherwise 
submit the interior of water sterilizers, stills, or similar equipment to acid or other chemical 
solutions while the equipment is connected to the water and/or drainage system. 

(b) ASME Standard . New pressure sterilizers and pressure instruments washer-sterihzers 
hereafter installed, shall display in a location to be clearly visible at all times, the ASME 
Standard symbol and data plate. 

(c) Sterilizer Piping . All sterilizer piping and/or devices necessary for the operation of 
sterilizers shall be accessible for inspection and maintenance. 

(d) Condensers . 

1. Pressure sterilizers shall be equipped with an acceptable means of condensing and 
cooling the exhaust steam vapors. 

2. Non-pressure sterilizers should be equipped with an acceptable device which shall 
automatically control the vapors in a manner to confine them within the vessel, or 
equipped with an acceptable means of condensing and cooling of vapors. 

(e) Gas Fued Equipment . Gas fired equipment or apparatus shall be installed in accordance 
with the requirements of the Massachusetts Fuel Gas Code 248 CMR 4.00 through 7.00. 

(5) Special Elevations . 

(a) Control valves, vacuum outlets, and devices which protrude from a wall of an operating, 
emergency, recovery, examining, or delivery room, or a corridor and/or other locations where 
patients may be transported on a wheeled stretcher, shall be located at an elevation which 
will preclude bumping the patient or stretcher against the device. 

(b) When necessary to install at a lower elevation, safety precautions should be taken to 
protect the personnel. 



3/11/05 248 CMR -206 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



(6) Plumbine in Hospitals for the Psychologically Impaired. 

(a) In hospitals/facilities for the psychologically impaired exceptional consideration should 
be given to piping, controls, and fittings of plumbing fixtures given the nature of the patients. 

(b) No pipes or traps shall be exposed and fixtures shall be substantially secured to walls. 

(7) Drainage and Venting . 

(a) Ice Storage Chest Drains . 

1. Any drain serving an ice chest or box shall discharge over an indirect waste receptor 
separate from all other fixture wastes. 

2. Each terminal shall discharge through an air gap above the receptor. 

3. The end shall be covered with a removable screen of not less than ten-mesh per inch, 
and if discharging vertically, the terminal shall be cut at an angle of 45°. 

(b) Bedpan Washers and Clinic Sinks . Bedpan washers and clinic sinks shall be: 

1 . connected to the soil pipe system; and 

2. vented following the requirements as applied to toilets, except that bedpan washers 
require additional local vents. 

(8) Sterilizer Wastes . 

(a) Indirect Wastes Required . 

1 . All sterilizers shall be provided with individual and separate indirect wastes, with air 
gaps of not less than two diameters of the waste tailpiece. 

2. The upper rim of the receptor, funnel, or basket type waste fitting shall be not less 
than two inches below the vessel or piping, whichever is lower. 

3. Except as provided in 248 CMR 10.18(8)(c) and 10.18(8)(e) a "P" trap shall be 
installed on the discharge side of, and immediately below, the indirect waste connection 
serving each sterilizer. 

(b) Floor Drain Required . In all recess rooms containing the recessed, or concealed portions 
of sterilizers, not less than one acceptable floor drain, connecting to the drainage system, 
shall be installed in a manner to drain the entire floor area. 

(c) Recess Room Floor Drains. Trap Seal Maintenance . 

1 . The recess room floor drain waste and trap shall be a minimum diameter of three 
inches. 

2. It shall receive the drainage from at least one sterilizer within the recess room to 
assure maintenance of the floor drain trap seal. 

3. The sterilizer drain shall be installed on a branch taken off between the floor drain 
trap and the drain head. 

4. No individual sterilizer waste trap shall be required on this type of installation. 

(d) Prohibited Connections . 

1, Branch funnel and branch basket type fittings, except as provided in 248 CMR 
1 0. 1 8(8)(e) are prohibited on any new installation or when relocating existing equipment. 

2. Existing branch funnel or branch basket type installations shall be provided with an 
acceptable indirect waste below the branch connections. 

(e) Battery Assemblies . A battery assembly of not more than three sterilizer wastes may 
drain to one trap, provided: 

1 . The trap and waste are sized according to the combined fixture unit rating. 

2. The trap is located immediately below one of the indirect waste connections. 

3. The developed distance of a branch does not exceed eight feet. 

4. The branches change direction through a tee-wye or wye pattern fitting. 

(f) Bedpan Steamers, Additional Trap Required . A trap with a minimum seal of three 
inches shall be provided in a bedpan steamer drain located between the fixture and the 
indirect waste connection. 

(g) Pressure Sterilizer . 

1 . Except when an exhaust condenser is used a pressure sterihzer chamber drain may 
be connected to the exhaust drip tube before terminating at the indirect waste connection, 

2. If a vapor trap is used, it shall be designed and installed to prevent moisture being 
aspirated into the sterilizer chamber. 

3. The jacket steam condensate return, if not connected to a gravity steam condensate 
return, shall be separately and indirectly wasted. 



3/11/05 248 CMR -207 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



4. If necessary to cool a high temperature discharge, a cooling receiver, trapped on its 
discharge side, may serve as the fixture trap, 
(h) Pressure Sterilizer Exhaust Condensers . 

1. The drain from the condenser shall be installed with an indirect waste as prescribed 
in 248 CMR 1.00 through 10.00. 

2. If condensers are used on pressure sterilizers, the chamber drain shall have a separate 
indirect waste connection. 

(i) Water Sterilizer . All water sterilizer drains, including tank, valve leakage, condenser, 

filter and cooling, shall be installed with indirect waste or according to 248 CMR 

10.18(8)(b). 

(j) Pressure Instrument Washer-sterilizer . 

1. The pressure instrument washer-sterilizer chamber drain and overflow may be 
interconnected. They also may be interconnected with the condenser. 

2. The indirect waste shall follow the provision set forth in 248 CMR 3.00 through 
10.00. 

(k) Aspirators . 

1. In operating rooms, emergency rooms, recovery rooms, delivery rooms, examining 
rooms, autopsy rooms, and other locations except laboratories where aspirators are 
installed for removing blood, pus and/or other fluids, the discharge from any aspirator 
shall be indirectly connected to the drainage system. 

2. The suction line of an aspirator shall be provided with a bottle or similar trap to 
protect the water supply. 

(9) Central Vacuum and/or Disposal Systems . 

(a) Wastes . The waste from a central vacuum (fluid suction) system of the disposal type 
and/or which is connected to the drainage system whether the disposal be by barometric leg, 
collecting tanks, or bottles, shall be directly connected to the sanitary drainage system 
through a trapped waste. 

(b) Piping . 

1 . The piping of a central vacuum (fluid suction) system shall be of con-osion resistant 
material having a smooth interior surface. 

2. No branches shall be less than one inch for one outlet and sized according to the 
number of vacuum outlets, and no main shall be less than one inch. 

3. The; pipe sizing shall be increased according to the manufacturer's recommendation 
as stations are increased. 

4. All piping shall be provided with adequate and accessible clean-out facilities on 
mains and branches, and shall be accessible for inspection, maintenance, and 
replacements. 

(c) Water Systems for Space Cooling and Heating Condensate Drains . 

1 . The lowest point of a condensate riser or risers shall be trapped and discharged over 
an indirect waste sink. 

2. The trap may be either "P" or a "running trap" with a cleanout. 

3. A branch shall be installed upstream from the condensate drain trap for flushing and 
resealing purposes. 

4. The condensate drain and trap shall be located above the lowest floor level of the 
building. 

(10) Vent Material . Material for local vents serving bedpan washers and sterilizer vents serving 
sterilizers, shall be sufficiently rust proof, erosion and corrosion resistant to withstand: 

(a) intermittent wetting and drying from steam vapors; 

(b) the distilled water solvent action of the steam vapors; and 

(c) frequent and immediate changes of temperatures. 

(11) Vent Connections Prohibited . 

(a) Connections between local vents serving bedpan washers, sterilizer vents serving 
sterilizing apparatus, and/or normal sanitary plumbing systems, are prohibited. 

(b) Only one type of apparatus shall be served by a given vent. 



3/11/05 248 CMR -208 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



(12) Local Vents and Stacks . Bedpan Washers . 

(a) Bedpan washers shall be vented to the outer atmosphere above the roof by means of one 
or more local vents. 

(b) The local vent for a bedpan washer shall be not less than a two-inch diameter pipe. 

(c) A local vent serving a single bedpan washer may drain to the fixture served. 

(13) Multiple Installations . 

(a) Where bedpan washers are located above each other on more than one floor, a local vent 
stack may be installed to receive the local vent on the various floors. 

(b) Not more than three bedpan washers shall be connected to a two-inch local vent stack, 
six to a three-inch local vent stack, and 12 to a four-inch local vent stack. 

(c) In multiple installations, the connections between a bedpan washer local vent and local 
vent stack shall be made by use of the tee or tee-wye sanitary pattern drainage fittings, 
installed in an upright position. 

(d) Trap Required . 

1 . The bottom of the local vent stack, except when serving only one bedpan washer, 
shall be drained by means of a trapped and vented waste connection to the plumbing 
sanitary drainage system. 

2. The trap and waste shall be the same size as the local vent stack. 

(14) Tra p Seal Maintenance . 

(a) A water supply of not less than '^-inch minimum tubing shall be taken from the flush 
supply of each bedpan washer on the discharge or fixture side of the vacuum breaker, trapped 
to form not less than a three-inch seal, and connected to the local vent stack on each floor. 

(b) The water supply shall be so installed as to provide a supply of water to the local vent 
stack for cleansing and drain trap seal maintenance each time a bedpan washer is flushed. 

(15) Sterilizer. Vents and Stacks . 

(a) Connections . 

1. Multiple installations of pressure and non-pressure sterilizers shall have their vent 
connections to the sterilizer vent stack made by means of inverted wye fittings. 

2. Such vent connections shall be accessible for inspection and maintenance. 

(b) Drainage . 

1. The connection between the sterilizer vent stack shall be designed and installed to 
drain to the funnel or basket-type waste fitting. 

2. In multiple installations, the sterilizer vent stack shall be drained separately to the 
lowest sterilizer funnel or basket-type waste fitting or receptor. 

(16) Sterilizer Vent Stack Sizes , 
(a) Bedpan Steamers . 

1 . The minimum size of a sterilizer vent serving a bedpan steamer shall be IVz inches 
in diameter. 

2. Multiple installations shall be sized according to 248 CMR 10.18(16): Table 1: 
Stack Sizes for Bedpan Steamers and Boiling Type Sterilizers, (number of connections 
of various sizes sterilizer vent stacks). 



3/11/05 248 CMR -209 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



TABLE 1 
STACK SIZES FOR BEDPAN STEAMERS AND BOILING TYPE STERILIZERS 



Stack Size 


Connection Size 




1 Vi inches 


2 inches 


lV2-inch' 


1 or 


2 - inch' 


2 or 1 


2 - inch' 


1 and 1 


3 - inch' 


4 or 2 


3 - inch' 


2 and 2 


4 - inch' 


8 or 4 


4 - inch' 


4 and 4 



Note 1 : Total of each siz,e 
Note 2: Combination of sizes 



(b) Boiling Type Sterihzers . 

1. The minimum size of a sterilizer vent stack shall be two inches in diameter when 
serving a utensil sterilizer, and one inch in diameter when serving an instrument 
sterilizer. 

2. Combinations of building type sterilizer vent connections shall be based on i248 CMR 
10.18(16): Table 1: Stack Sizes for Bedpan Steamers and Boiling Type Sterilizers. 

(c) Pressure Sterilizers . Sterilizer vent stacks shall be IVi inches minimum; those serving 
combinations of pressure sterilizer exhaust connections shall be sized according to 248 CMR 
10.18(16): Table 2: Stack Sizes for Pressure Sterilizers. 

(d) Pressure Instrument Washer-Sterilizer Sizes . 

1 . The minimum size of a sterilizer vent stack serving an instrument washer-sterilizer, 
shall be two inches in diameter. 

2. Not more than two sterilizers shall be installed on a two-inch stack, and not more 
than four on a three-inch stack. 



TABLE 2 
STACK SIZES FOR PRESSURE STERILIZERS 



Number of Connections of Various Sizes 
Permitted to Various Size Vent Stacks 




Stack Size 


Connection Size 


3/4 




1 inch 




IVa inch 




1 Vi inch 


P/2-inch' 


3 


or 


2 


or 


1 






P/2-inch' 


2 


and 


1 










2 - inch' 


6 


or 


3 


or 


2 


or 


1 


2 - Inch' 


3 


and 


2 










2 - inch' 


2 


and 


1 


and 


1 






2 - inch' 


1 


and 


1 


and 


1 






3 - inch' 


15 


or 


7 


or 


5 


or 


3 


3 - inch' 






1 


•and 


2 


and 


2 


3 - inch' 


1 


and 


5 


and 






1 



Note 1 : Combination of sizes 
Note 2: Total of each size 



(17) Radioactive Materials . 

(a) All radioactive materials shall be disposed of in a manner so as to create no hazard to 
operation and maintenance personnel of the institution or to the public. 

(b) Specific permission shall be secured from the State Department of Public Health to 
dispose of any radioactive material to the drainage system. 



3/1 1/05 



248 CMR - 210 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 




(18) Water Supply . 

(a) Water Service . All hospitals shall have dual services installed in a manner to provide 
an uninterrupted supply of water in case of a water main break. 

(b) Hot Water Heater and Tanks . 

1 . The hot water equipment shall have sufficient capacity to supply water at 125°F for 
hospital fixtures; water at 180°F for kitchens; and water at 180°F for laundry. 

2. Where direct fired hot water heaters are used, they shall be of an approved high 
pressure type. 

3. Submerged steam heating coils should be of copper. Storage tanks shall be fabricated 
of non-corrosive metal or be lined with non-corrosive material. 

(c) Hot Water Supply System . 

1 . Hot water circulating mains and risers should be run from the hot water storage tank 
to a point directly below the highest fixture at the end of each branch main. 

2. Where the building is higher than three stories, each riser shall be circulated. 

3. Each main, branch main, riser and branch to a group of fixtures of the water system 
shall be provided with valves. 

(19) Vacuum Breaker Installation . 

(a) Hose Connections . For ordinary hose connections the maximum height at which any 
hose is to be used shall be treated at its flood level. 

(b) Low Volume Flows . 

1 . Where low volume flows might cause leaking or spitting at the vacuum breaker parts, 
back pressure may be developed by installing an acceptable minimum orifice valve on 
the discharge side of the vacuum breaker. This shall be in addition to the regular control 
valve. 

2. Low volume flow installation shall be subject to review and acceptance by the 
Inspector. 

(c) Prohibited Toilet and Clinic Sink Supp ly. 

1 . No jet or water supplied orifices, except those supplied by the flush connection, shall 
be located in and/or connected with a toilet bowl or clinic sink. 

2. 248 CMR 10. 1 8 shall not prohibit an acceptable bidet installation. 

(d) Special Equipment. Water Supply Protection . 248 CMR 10.18(19): Table 3: 
Hospital Fixtures and Their Water Supply Protection, sets forth the requirements which 
shall be followed in protecting the water supply for hospital fixtures against backflow or 
backsiphonage. 



3/11/05 248 CMR -211 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 



TABLE 3 
HOSPITAL FIXTURES AND THEIR WATER SUPPLY PROTECTION 



Fixtures 


Type of Protection' 


Remarks 


Aspirators: 


Laboratory 


Vacuum breaker 




Portable 


Vacuum breaker 




Vacuum system 


Vacuum breaker 




Bedpan: 


Washers 


Vacuum breaker 




Washer hose 


Vacuum breaker 


Locate five feet above floor. 


Boiling type sterilizer 


Air gap 


Not less than twice the 
effective opening of the water 
supply. 


Exhaust condenser 


Vacuum breaker 




Flush floor drain 


Vacuum breaker 




Hose connection 


Vacuum breaker 


Locate six feet above floor. 


Pressure instrument washer-sterilizer 


Vacuum breaker 




Pressure Sterilizer 


Vacuum breaker 




(rubber Tube Testers-Washers) 


Vacuum breaker 




Vacuum systems 


Cleaning 


Air gap or vacuum breaker 




Fluid suction 


Air gap or vacuum breaker 





Note 1 : Where vacuum breakers are used, they shall be installed after the last control valve. 

(20) Clinical. Hvdrotherapeutic and Radiological Equipment . All clinical, hydrotherapeutic, 
radiological, or any equipment, whether mentioned or not, which is water supplied and/or 
discharges to the waste system, shall meet the requirements of 248 CMR 10.18 and the 
regulations covering cross-connections, air gaps, vacuum breakers, and check valves. 
Special Equipment and Devices Found Under These Classes Include : 



Clinical 


Hydrotherapeutic 


Radiological 


Other 


Dental cuspidors 


Control units 


Violet X-Ray 




Surgical cuspidors 


Arm bath 


Diagnostic X-Ray 




Dental (flush rim) lavatories 


Leg bath 


Therapy X-Ray 




Colonic irrigation 


Foot bath 


X-Ray target 




Sitz bath 


Tub bath 


X-Ray transformers 




Emergency bath 


Immersion bath 


X-Ray oil tank 




Receiving bath 


Shower bath 


Diffraction 




Prenatal bath 


Needle bath 


X-Ray developing 




Infant bath 


Tank 


Photographic developing 




Prophylaxis 


-Pool 


Film developing 




Shampoo 


Hose 


Microscopic , 




Massage 


Syringe 








Douche 







(21) Condensate Drain Trap Seal . 

(a) A water supply shall be provided for cleaning, flushing, and resealing the condensate 
trap. 

(b) The source of the water supply shall be a refrigerator condenser discharge, a drinking 
fountain waste, or other acceptable method of flushing and resealing the trap. 

(c) The water supply shall be not less than Vi inch diameter pipe. 



3/U/05 



248 CMR - 212 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.18: continued 

(d) The water supply shall discharge through an air gap not less than twice the diameter of 
the supply pipe. 

(22) Valve Leakage Diverter . Each water sterilizer which may be filled with water through 
directly connected piping, shall be equipped with an acceptable leakage diverter and/or bleed-line 
on the water supply control valve to indicate and conduct any leakage of unsterile water away 
from the sterile zone. 

10. 1 9: Plumbing in Manufactured Homes and Construction Trailers 

(1) Definitions . The following definitions shall apply to 248 CMR 10.19. 

Manufactured Home . Manufactured Home shall mean a structure, built in conformance to the 
National Manufactured Home Construction and Safely Standards which is transportable in one 
or more sections which in the traveling mode, is eight body feet or more in width or 40 body feet 
or more in length, or when erected on site, is 320 or more square feet, and which is built on a 
permanent chassis and designed to be used as a dwelling unit with or without a permanent 
foundation when connected to the required utilities, and includes the plumbing, heating, air 
conditioning, and electrical systems contained therein. 

Label . Label means the adhesive-back aluminum foil decal which is permanently affixed to each 
transportable section of each manufactured home manufactured for sale in the United States and 
which serves as the certification by the manufacturer of conformance with the rules made under 
the Federal Manufactured Home Construction and Safety Standard in effect on the date of 
manufacture. 

Temporary Construction Trailer . A temporary construction trailer when supplied with toilet 
facilities that would be used during construction of a building or structure only. 

(2) Scope . 

(a) Plumbing in manufactured homes shall comply to the latest Rules and Regulations 
established by the Secretary of the Department of Housing and Urban Development 
authorized by the National Manufactured Home Construction and Safety Standards. 

(b) Such rules are to be effective as of June 15, 1976. 

(c) These rules and regulations supersede all State Plumbing and/or Gas Codes. 

(d) Additions or renovations made to the Plumbing and/or Gas Systems of such units shall 
be made in compliance with all provisions of M.G.L. c. 142 and 248 CMR 1.00 through 
10.00. 

(3) Temporary Construction Trailers . Temporary construction trailers are exempt from the 
material provisions of 248 CMR. 10.06. 

(a) The temporary water and sewer connection to a temporary construction trailer shall be 
the same material as supplied with the trailer by the manufacturer. 

10.20: Public arnd Semi-public Swimming Pools 

(1) General . 

(a) All Public and Semi-public swimming pools must be installed in full compliance with 
all provisions of 105 CMR 435.000: Minimum Standards for Swimming Pools (State 
Sanitary Code: Chapter V). 

(b) The issuing of permits, payment of fees, inspection, approval and installation of all 
swimming pools must also conform to all provisions of 248 CMR 1.00 through 10.00. 



3/11/05 248 CMR -213 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.20: continued 

(2) Definitions . 



Public Swimming Pool means and includes every artificial pool of water having a depth of two 
feet or more at any point and used for swimming or bathing, located indoors or outdoors, 
together with the bathhouses, equipment, and appurtenances used in connection with the pool. 
It does not include any residential pool as herein defined nor does it include any pool used 
primarily for baptismal purposes or the healing arts. 

Public Swimming Pool also means every swimming or wading pool admission to which may 
be gained by the general public with or without the payment of a fee. 

Semi-public Pool : 

(a) A semi-public pool is a swimming or wading pool on the premises of, or used in 
connection with a hotel, motel, trailer court, apartment house, country club, youth club 
school, camp, condominium or similar establishment where the primary purpose of the 
establishment is not the operation of the swimming facilities, and where admission to the use 
of the pool is included in the fee or consideration paid or given for the primary use of the 
premises. 

(b) Semi-public pool shall also mean a pool constructed and maintained by gi-oups for the 
purposes of providing bathing facilities for members and guests only. 

Residential Pool means a swimming or wading pool established or maintained by an individual 
for his own or family's use or for the use of personal guests of his household. 

Wading Pool means a pool of water in a basin having a maximum depth of less than two feet 
intended chiefly as a wading place for children. It does not include any residential pool as herein 
defined. 

Operator means any person who: 

(a) alone or jointly or severally with others owns a public or semi-public swimming pool 
or wading pool regulated by 248 CMR 10.00; or 

(b) has case, charge or control of such a pool as agent or lessee of the owner or as an 
independent contractor. 

Person means every individual, partnership, corporation, firm, association or group, including 
a city, town, county, or other governmental unit. 

Board of Health means the appropriate and legally designated health authority of the city, town 
or other legally constituted governmental unit within die Commonwealth having the usual 
powers and duties of the board of health of a city or town, or his or its authorized agent or 
representative. 

(3) Plan Approval . 

(a) No person shall construct or install a Public or Semi-public swinmiing or wading pool 
or expand, remodel, or otherwise make any change which may affect the compliance of an 
existing Public or Semi-public swimming or wading pool with the requirements of 248 CMR 
10.00 until the plans and specifications for the construction or change have been approved 
in writing by the Board of Health. 

(b) Nothing in 248 CMR 10.00 shall affect the authority of any person acting under 
appropriate sections of an applicable building, plumbing or electrical code, ordinance or 
regulation. 

(4) Conformance . 

(a) All work shall conform to plans and specifications as approved by the Massachusetts 
Department of Public Health or the Board of Health. 105 CMR 435.000: Minimum 
Standards for Swimming Pools (State Sanitary Code: Chapter V). 



3/11/05 248 CMR -214 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.20: continued 




(b) Changes to Plans or Specifications . 

1 . Any revision or change in the plans and specifications, as originally approved by the 
Massachusetts Department of Public Health or the Board of Health, which may affect the 
capacity or the health or safety features of the swimming or wading pool shall be 
submitted to the Board of Health for review. 

2. Approval from the Board of Health of said change or revision of plans shall be 
obtained in writing before the work affected by the change is undertaken. 

(5) Notification . 

(a) The Board of Health shall be notified when a newly constructed, expanded, or 
remodeled swimming or wading pool is ready for use, 

(b) Notification shall be given at least one week prior to the completion of the project so 
that a date can be arranged for a final inspection. 

(c) Use of such pool shall not commence before a final inspection has been made and 
approval, in writing, to operate has been given by the Board of Health. 

(6) Prohibited Connections . 

(a) Under no circumstances shall piping systems be designed and constructed as to permit 
pool water to enter a potable-water-supply system nor waste water or sewage to enter the 
pool through backflow connections or interconnections. 

(b) Cross-connections or interconnections in the pool piping system whereby pool water 
may under some conditions enter a potable- water-supply system should be avoided using the 
following means: 

1 . by providing for the admission of make-up water above the overflow elevation of the 
pool or by pumping from a pump suction well; or 

2. where filters are installed and filter washing with the recirculation pump is not 
feasible, a wash-water pump of proper capacity should be installed and a suction well or 
small elevated tank used to supply water to the pump, the discharge to the suction well 
or tank being above the flow line. 

(c) In no case should valved cross-connections, whereby water from a potable-water-supply 
may be admitted directly to the recirculation system for the purpose of filter washing, be 
permitted. 

(d) No pool drains or drains from filters, where the re-circulating system is used, should be 
directly connected to sewers. 

1 . Such drains should discharge by an indirect connection to a properly trapped sump. 

2. Where such indirect connections are not possible, pumping of pool and filter-wash 
drainage may be necessary. 



10.21: Boiler Blow-off Tank 



(1) Boiler Blow-off Tank . (5ee 248 CMR 10.22: Figure 1: Illustration of Boiler Blow Off 
Tank). A vessel designed to receive the discharge from a boiler blow-out outlet and to cool the 
discharge to a temperature of 150°F or less which permits its safe discharge to the drainage 
system. 

(a) Shall be in full accordance with the recommendations of the National Board of Boiler 
and Pressure Vessel Inspectors for Boiler Blow-off Equipment, Columbus, Ohio. 

(b) The temperature of water entering drainage piping from discharge of blow-off 
equipment shall not exceed 150°F. 

(c) The pressure of the blow-down leaving any type of blow-off equipment shall not exceed 
fiveP.S.LG. 

(d) The blow-off piping and fitting between the boiler and the blow-off tank shall comply 
with the ASME Power Boiler Code, Paragraphs P-307 through 3 12. 

(e) All materials used in the fabrication of boiler blow-off equipment shall comply with 
material section of the AS^ffi Boiler Code, Section H . 

(f) All blow-off equipment shall be fitted with openings to facilitate cleaning and 
inspection. 



3/11/05 248 CMR -215 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.21: continued 

(g) The blow-off tank shall be designed in accordance with the ASME Boiler Construction 
Code, Section VIE for a working pressure of at least one fourth of maximum working 
pressure of the boiler to which it is connected. In no case, however, shall the plate thickness 
be less than % inch. 

(2) Direct Connections of Steam Exhaust. Blow-offs and Drip Pipes . 

(a) Discharge into Building Drainage System : 

1 . A steam exhaust, blow-off, or drip pipe shall not be directly connected to a building, 
drainage system but shall first pass through a blow-off tank as shown in 248 CMR 
10.22: Figure J: Illustration of Boiler Blow Off Tank. 

2. Such waste water when it is discharged into a building drainage system shall have a 
temperature of not more than 150°F. 

(b) Automatic Cooling Facilities : 

1 . Steam condensate which is to be discharged to the drainage system shall be provided 
with automatic cooling facilities to reduce the temperature of the water to a maximum 
temperature of 150°F. 

2. Automatic cooling facilities shall include storage so that heat may be dissipated and 
cooling water when required shall be added by use of a thermostatically controlled device 
and only that portion of condensate about to be discharged to the drainage system shall 
be cooled. 

3. The requirements of 248 CMR 10.21(2)(b) apply particularly to systems of steam 
supply in which the steam condensate is discharged to waste rather than being returned 
to the steam generating plant such as steam supplied from street mains or from remote 
central steam generating plants. 

10.22: Figures 

Notes for Figures: The following applies for the figures in 248 CMR 10.22. 

(1) All figures are general schematics for illustrative purposes only. The figures are not meant 
to show every fitting, change of direction or every situation. Deviations from the illustrave 
figures may be acceptable so long as the workmanship is in compliance with the relevant portion 
of 248 CMR. 

(2) All fixture waste and traps, as represented in the figures, shall be in compliance with Table 
248CMR10.15(2)(a). 

(3) All cleanouts and locations, as represented in the figures, shall be in compliance with 
248 CMR 10.08(2)(a) through 10.08(2){n). 

(4) All vents through the roof, as represented in the figures, shall be in compliance with 
248 CMR 2.16(4)(a) through 2.16(5)(f). 

(5) All branches and building drain sizes as per table 248 CMR 2. 15(3)(a). 

(6) All sizes of vents, vent stacks, branches etc. as represented in the figures, shall be in 
compliance with Table 248 CMR 2. 16(12)(a). 




3/11/05 248 CMR -216 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22; continued 



(7) Symbols used in the figures in 248 CMR 10.22 have the following meanings. Note, for 
plans and specifications, these symbols may be used. 



U.G. 


Under Ground 


A.G. 


Above Ground 


W&T 


Waste and Trap 


S.S. 


Service Sink Trap Standard; Sanitary Sewer; or Storm Sewer (depending 
on context) 


M.R. 


Mop Receptor 


F.D. 


Floor Drain 


F.V. 


Future Vent 


K.S. 


Kitchen Sink (Single Compartment) 


w.c. 


Water Closet/Toilet 


LAV. 


Lavatories with 1 Va inch waste 


V.T.R. 


Vent tlirough roof 


C.I. 


Cast iron 


A.W. 


Acid Waste 




(8) All trap distances from vents as represented in the figures are in compliance with 248 CMR 
10.16(1 l)(a): Table 1: Distance of Fixture Trap from Vent. 

(9) See 248 CMR 10.13: Piping and Treatment of Special Hazardous Wastes before 
installation of any special hazardous waste system. Figure 16. 

(10) Figures are not to scale. 



3/11/05 



248 CMR -217 



10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 1: Illustration of Boiler Blow Off Tank. 




PIPE CONNECTIONS W BLOWOFF TANKS 


BOILER BLOWOFF 


WATER OUTLET 


VENT 


3/4" 


2" 




2" 


1" 


Z" 




2-1/2" 


1-1/4" 


Z" 




3" 


1-1/2" 


3" 




4" 


2" 


3" 




5" 


2-1/2" 


4" 




6" 



SIZE OF BLOVJDFF TANK 



The Lanic shall beof a volume equal to twice 
the volume of water removed from the boiler 
when the normal water level is reduced 
not less than 4" -inches 



Re<|ulator Port 
Cold Water Inlet 
Blowdovm Inlet 



IVater Outlet 



Cold Water: 



Approved Air 
/ :Gap Fitting 

Minimum Size 

1-1/2 



Self Contained Regulating Valve 
(Typical ior all Tanlu) 

Minimum Cold Water Supply = 1 "- Inch 

Vent 




Water Outlet 
Regulator Bulb 





1/4" Pressure Gauge 
Glowdown Inlet 

1/2" Gauge Glass 
Connections 



■3/4" Thermometer 
Cold Water Inlet 



Drain(s) 



NOTES; 

1. DRAIN SI2E 2"-INCH IF A TANK OF 36" DIAMETER OR LESS 3"-INCH IF TANK IS OVER 36° DIAMETER 

2. ALL TANKS ARE TO BE SUPPLIED WITH SUPPORTS SUPPLIED BV THE MANUFACTURER 

3. PIPING CONNECTIONS THAT ARE 4"-INCH I.P.S OR LARGER SHALL BE FLANGED 

4. 24" X 15" MANHOLE FOR 36" DIAMETERS AND LARGER 4 " X 6" HANDHOLE FOR SMALLER DIAMETERS 

5. "A" DIMENSIONS DETERMINED BV O.D. AND LENGTH - MUST BE APPROVED 



3/11/05 



248 CMR -218 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.22: continued 

FIGURE 2: Illustration of Maximum Distance from Trap to Vent in Compliance with 248 CMR 
10.16(12)(a): Table I: Distance of Fixture Trap from Vent 



-mi^.\Xim- 



:0\mM 



Note: These dimensions are from the vent to the weir of the trap along the developed length and the slope 
of the pipe in this distance is not greater than 14 inch per foot. 



Diameter of Pipe 


Maximum Developed 
Length of the Pipe 


IV2 inch waste and trap 


Five feet 


2 inch waste and trap 


Six feet 


3 inch waste and trap 


Eight feet 


4 inch waste and trap 


Ten feet 



3/1 1/05 



248 CMR -219 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 

FIGURE 3: Illustration of Miscellaneous Common Venting 248 CMR 10.16(9). 






1-1/4" n i.,/4.. 




2" Floor drain 




K^ 


2" Shower 


1-1/2" 
ft Lav. 


1-1/2" ^^ 

Kitchen Rrf*^ 
Sink \§ : 


10"MaKimum 


; 


'■■■■■ 


■2" ■. 




i/zriBidet: 





2" shower 




2'- Urinal 



10"MaKlmuni 





Horizontal Waste Branch 
Back to Back or 
Side by Side 
248 CMR 10.16: (9) (b) 



10" Maxintum 



Vertical Vent 

Different Levels 

248 CMR 10.16: (9) (c) 



3/11/05 



248 CMR - 220 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 

FIGURE 4: Illustration of Stack Venting in Compliance with 248 CMR 10.l6(8)(a) and (b). 



_, 3" Venfc.Thru Roof 



2" Vent Thru Roof 




From Inner Face 



Include a bathtub or shower stall and a kitchen in the stack, on the extreme right hand side of the sketch. Such 
additional fixtures to be installed in accordance with 248 CMR 10.16(8)(a). 



3/11/05 



248 CMR -221 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURES: Illustration of Wet Venting. 



4" Verit Thru Roof 



Wet Venting Top Floor 
Tubs Vented through Lavatories 



Wet Venttrig : 
1st Floor 
Double or 

Back to Back 
Showers. 
Thru LavCs) 



wet Venting 
2nrd Pipor 
Toilet, Shower and Tiib 
Thru Lavatories 




From Inner face 



3/11/05 



248 CMR - 222 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 6: Illustration of Individual Vent First Floor, Wet Vent Second Floor, 
and Stack Vent Third Floor. 






1 


3" Vent Thru Roof 






3" 


i 
1 
i 





1-1/2" Lav. 

in 



l-iy?" Tub 




2" Shower 



l-l/2"Tub 



10"-0*' 
From Inner Face 



4" End Cleanout 



3" End Cleanout 




3/1 1/05 



248 CMR - 223 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 

FIGURE 7: Illustration of Battery Circuit Vent, First Floor and Batteiy Loop Vent Second Floor. 




From Inner Face 



3/11/05 



248 CMR - 224 



10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 8: Illustration of Battery Circuit, Vent Multiple Floors. 



{"/) Hush Valve Toilets 

(2) Flush Valve Urinals 4" 

(4) Lavatories 

(2) Floor Drains 

(1) Drinking Fountain 




1 0'-6" GZIZiS- I 4" ^d deanout 
From Inner Face 



3/11/05 



248 CMR - 225 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 9: Illustration of Battery Loop Vent, Multiple Floors. 



(7) Flush Valve Toilets 

Floor Mounted 
(2) Flush Valve Urinals 
(4) Lavatories 
(Z) 2" Floor Drain(s) 
(1) Drinking Fountain 





from Inner Face 



3/11/05 



248 CMR -226 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.22: continued 



FIGURE 10: Illustration of Below the Floor Hazardous Waste Battery Venting. 
5ee248CMR10.13(5)(d). 




3/1 1/05 



248 CMR - 227 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 1 1 : lUustxation of Hazardous Waste Battery Vented Below Floor Level, 
in Compliance with 248 CMR 10.13. 




4' Vent Thru Roof 



f^- -f- 



:^ >^..>-^^^-V^.:^. ^■::.^: y./. V ■::/■:■ /^fy?2/-: t^:^-:^::y^:/T':-/.^:^/^'7^Tr'^^ 



Cup Sinks 
are the Equivalent of ] 
JDne Fixture Vnxit, 



if 



. 



w irf 




Relief Vent 
I? (^48CMR tO.I3;(5)(d)(2i 



'lilt » 



jj m iri) wi ir| m w% 




. lii!iUtall (I (| ft } a li « I . 




tO'-O" 



-^>- "^^^ vv. < V>. v. VSWyVvS Vn vX W W \ \\\ \ 



Fronn Inner Face 



3/11/05 



248 CMR - 228 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FTTTERS 




10.22: continued 
(FIGURE 12: Reserved) 




3/11/05 248 CMR -229 



10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 13a: Illustration of Bow Vent Single Installations. 




3/11/05 



248 CMR - 230 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




10.22: continued 

FIGURE 13b: niustration of Bow Vent connection at Intermediate Floor. 




3/11/05 



248 CMR -231 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 13c: Illustration of Bow Vent Connection to Horizontal. 




3/1 1/05 



248 CMR - 232 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22; continued 
FIGURE 14: Illustration of Sizing for Safe Waste Pan Drains or Water Heaters. 248 CMR 10. 12(l)(h) 








Floor Drain or 

other Properly Trapped 

and Vented Receptor 








Relief 


Table for Sizing Safe Pan Waste 


Value 


Number of Hesters or Storage TankK: .' 


Sfee 


■ :2.' "■ 


3 


■■;■::/ 4-;-:: 


S .. 


■ 6 or more: 


■<ilZ"\ 


1" 


1-1/4" 


1r1/4" 


:i-i/2" : 


1-ifZ" 


11-1/4" 


1-1/2" 


.;: .-J...-; 


' 2" 


': 12" :-.: 


i" 


. 1r1/2" 


■■.. 2V.' 


■..:Z"-' 


2-1/2'^: 


■.■ 3" ■ ■ 


1-1/4" 


2" 


2-1/2" 


3" 


4" 


t" 


1-1/2" 


2-1/2" 


3" 


4" 


4" 


4" 


2" 


2-1/2" 


3" 


4" 


4" 


4" 




Main Pipe Sizes 



FlooriDrain or: ■;;■;. ; 
otherProperly.Trapped 
ahdVeiiteci Receptor ; 



3/11/05 



248 CMR - 233 



oo 

n 



to 



•:;;iN.y:Et;;-;::: 


■s:p/-.;aD- ■ - 


...:.-. A ■■-::■. 


■■^■i.^J.&:-:l,: 


4" 


'MW&^:-. 


. ' ;i'.&''ki- 


;:^;;;,..2>v^. :■'■■. 




%-i:y^:ii-erfi: . 


tf-6" ■■■.■■■■':■■■ 


:■;■.:?■<*■ rO'.-'X- : 


5" 


:^3'"!^*i'^* 


aVo*-^-;:. 


.■:::'3:'^cr'.i--^ 




:^;-.:v4'rcr'' . 


3'-6'.:: -. 


■.:■':■ ■a^^cT:.-:-' ■ 




^i»;^:Cf jtij'l-C}' 


z'-o' 


.■::'N.;a^-6-r^^' 




m/l'^-^l^:: . 


3"-0',; :.■ 


.■■ ^S^re'::'!:-;^ 


6" 


■■■■■^■V'4''b''f' 


5"'0' 


:--:-^^-i*':6*J:'-;:: 


..■■■:.ii, -.0*Jt<^*-0" ■ 


^■-o- 


■■^■::::;i5"-ir.':::..^ 




:-;:.:;:?-4*-te-J' . 


4'-0* : 


■^-ia'^-fe'v- 




E-^'-^-x^'^ ■ 


ar- 6° 


■■■■■/■3-Oi^-:;-: 




■ •- -5>cr'»'^^ 


3'- 6" . . 


:.v::;:5'-,^- ::■■': 


■ ■ ■.!■■•:..■;::-:,:;:.-;< :,; 


:'iJ5'--.0"ii5'-0' 


3- b' 


.•■■■-: S'-'6" ■■:■;■ ; 




li;Z:3^^-d"'*- 


6-0" 


. x.'s'-o*:*'' 


8" 


■■.tf';..6'KS>er 


4'' 6" 


■■;.:^;*:b^:-.- 




■-ii::>:6'r-b ■".:.. 


^--D- : 


■' ;,-:3'* 6" :■■-.■ ■■ 




;;.^-Q-i6'.-cr 


3' -or : 


^ :<m^ <■■:,■ 


: 


.;■;■;.[■ ;:-6*- 6'* 


5' -6" 


■■■■:::,-.:;.;3'^o' ■-:■:■ 




^::(6*-:6*k6''^.:6^ 


3'- O* 


.:M:.-:ra^,6r:r:i:- 



Piping Material Notes; 

A. No-Hub Cast Iron with Product-Approved Stainless Steel Clampi : 

B. Service Weight Cast Iron with Product-Approved Resilient Gaskets 
or Lead and Oakum joints. 

C Extra Heavf Cast Iron with Product-Approved Resirient Gaskets 
orLcadandOakumJoinb 



General Cbiistruction Notes: 



The Commonwealth of Massachusetts 
Board of Examiners of Plunibers and Gasfitters 
Gasoline, Oil and Sand Separator Design 



In open parking garages or open parking area(s) ONLY the inlet pipe may extend belov/ 
the water line a maximum distance of e'-inches. 

Tk^V/B^fTCSlTOROOF^, 



tiie separatons to be located outside of a building where possible and the 

cover is to Incorporate a center-hole. A sealed tight cover is to be used if the 

separator is located inside of a building. Hie cover shall be no less than a 24' 

diameter, lite separator shall be located and constructed to prevent surface 

or sub-surface water from entering. The inlet pipe shall be no less Utan four 

inches above the water line level. When the separator is subject to freezing [ 

it shall be set a minimum of three feet below grade. "Hie separator shall be 

filled with water and leak tested before being introduced into service. The 

lion-corrosiye steps shall be spaced at IS'-inches apart The chamber vent 

arid outlet vent shall return to the inside of the building and extend through the roof. 



CASTIRCNTtE 



DISaWlGE.0UTl£TTO- 
SAiNITARY SBm. OP. HOLDING TANK 




(SEENOn:-SA,B,AiM)C) 
FOR PIPE WTi3^rAL REQUIRE tNTS 



r pouRiD iM PI Acr covcPxiE uR 8" sot 10 cowREtt envxi 

WIIH Mil L MORIAKED X)l\lS HQRIfflNlAL A"J5 VtRIlCAl, 

RASfm iWlDf A^ OUISIK OR RED BRICJ! MASONRY 

PLMUREUQMHCIXSIOE. 

SOLID rmCREIE PRTtASI WITH WAIER llClfl COWCfJOVS 

Al I COVCREIE SHAa CONSIST Of I PARI CBtM 

A\0 2 PARfS SA!©. avOfT 8RI«, HDLLOW.COVCREIE 

OR cnwR OLori; masovry proxkis shail not k usd. 






Vi 

<^ 
p 

o' 

3 

o 

o 

o 



m 



o 

o 

3 

c 

3 

c 



lO 

00 

n 

td 
O 

> 



O > 

> H 

q X 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 

FIGURE 16: Dlustration of Horizontal to Horizontal Change of Direction. 





FIGURE 17: Illustration of Vertical to Horizontal Change of Direction. 




V.__^^ BEND ^y} 




3/11/05 



248 CMR - 235 



10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 18: Illustrations of Building Drainage Foundation Wall. 





< jg.ooR level; 



QJh,:- .■■■:■:■: 

;.,;:.;:■ ■.■■ J :"; ■ ■■ : ,y-^: 



UILDING DRAIN 
O OTHER RXTURESj 



CLEANOUT 



Note: A, B, C, D & E on each figure shall be in compliance with 248 CMR 10.07(l)(c) (Lead & oakum 
joints). 



• 



3/11/05 



248 CMR - 236 



10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 19: Illustration of Laundries in Multi-story Buildings. 



IM Pipe diameters minimum if cfiange in 
direction is greater, than.45 degrees , 

2, Loiiig sweeps and dandy cleanoiits may 
be ttsed in lieu of wyes and i/fikfids 

3. If thereare more tliaii ten branch iritervals 
on tlie stacit a relief vent shafi be installed 
iii3CCbrdani:e#h248CMRiai6:(4){i 




SuthPresoBtftetefWenl ■ 


■ WifleSUe ;; 


. Refe/VentSlas ^ 


. i-hr ■■; 


■r-iiidi\ 


■ ■• y--.. 


r-iiKli 


M/2;" 


r-tach 


3"' 


r-wdi 


A° 


3"-Jni.1i 


r 


4*-ii>di 


6" ~ 


S'-inth 


; -,8" . ■ •■ 


C'-inch 



3/11/05 



248 CMR - 237 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 20: Illustration of Offsets of More than 45° in Buildings of Five Stories or More 
in Compliance with 248 CMR 10.15(8)(b) and 10.16(4)(c). 




<^|[noor Line^ 



<^oor Un^ 



*S^ |,i4 



M i v3c— -~~rii:z:r::;~zz:i:ri;::rr±:rizr.r~ 




Hydraulic Jump Zone 
Pipe Diameter X 10 



2^r:0"MItM. kivM; 



M 

n 

r-l 
M 

it 

m 

■■•i-;l-^ 

n 

M 

n 
U 



3/11/05 



248 CMR - 238 




10.22: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE 2 1 : Illustration of Multiple Clear Water Waste Stack. 




^ 



Vent Thru Roof 



Roof Drain 



Inidirect Clear 
^aterWaste 



^ 
)^. 



&^ 



P 





^ 


■^ 


^£ee NoteTl^ 









m 



Clear 

Water Waste 

Stack 




Accessible 
Backwater Valve 



Note(s): 

1. Install all "Clear Water Waste" per 248 CMR 10.12:, 
Size all Indirect Waste Piping per 248 CMR lO.liS: (2)(b) 

2. Size "Clear Water Waste" P-Traps and the "Clear 
Water Waste" Stack per 248 CMR 10.15:(2)(b) 

3. Size the Storm Water System per 248CMR 10.17: 

4. Beginning at the Point of the Branch for the Indirect 
Waste Stack; Size the Continuation of the Storm 
Water Drainage System per 248 CMR 10.17: (3) 



^^SeeNoteTs^ 



P 



End Cleanout 




^^ee NoteTT^ 



I Dandy Cleanout I j 



Storm Water^ Drainage -: 
■ /ft;pm iptherRprtlons «f 

■•■■■^■"'::;^lhe:BuMdirifl;'>'V.::;^;; 




3/11/05 



248 CMR - 239 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 



FIGURE 22: Illustrations of Installation of Grease Interceptors. 



Figure A 



Triple Compartrri6nft Sink 
■Mth bovA depths exceeding iO-inches 





Figure B 




Pre- Rinse Sink Station 
vflthout Garbage Disposal 



Pre- Rinse Sink Branch 
8- Feet Maximum Distance 
Per 248 CMR 10.03(2Xd):£) 



I 




3/11/05 



248 CMR - 240 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 





3/11/05 



248 CMR -241. 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.22: continued 

FIGURE 23: Illustration of Combination Upper and Lower Roof Drain Installations. 




3/11/05 



248 CMR - 242 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: Vacuum Drainage Systems 

(1) General . 

(a) . The purpose of 248 CMR 10.23 is to provide guidance to the Inspector in the 
evaluation as a proposed alternate and the requirements for the installation of vacuum 
powered sanitary drainage systems. 

(b) The scope of 248 CMR 10.23 includes the fixtures, piping, connections, vacuum 
equipment, associated tanks and the method of receiving discharge from or dischaiging to 
a conventional drainage system as regulated in 248 CMR 10. 15: Sanitary Drainage System. 

(c) The Inspector may require the plans, specification, calculations and operating 
instructions to be reviewed and approved prior to the issuance of a permit for installation. 
The costs for such review shall be borne by the applicant. 

(2) Fixtures . 

(a) General . All provisions and prohibitions of 248 CMR 10.10; P I umbijig Fixtures shall 
be compiled with. 

(b) Special Fixtures . Special fixtures designed and intended for connection to vacuum 
drainage systems shall be listed and approved for such use and shall be connected only to 
such systems. 

(c) Conventional Fixtures . Conventional Fixtures designed and intended for use and 
connection to the gravity sanitary drainage systems may be connected to a vacuum drainage 
systems provided that all of the following conditions are met: 

1. The fixtures discharge into a gravity sanitary drainage and vent system complying 
with 248 CMR 10.15: Sanitary Drainage System and 248 CMR 10.16: Vents and 
Venting; 

2. The fixture shall be served by a trap complying with 248 CMR 10.08: Traps and 
Cleanouts; and 

3. The gravity drainage system is connected to the vacuum drainage system by an 
interface device. 

(3) Fixture Units . 

(a) Vacuum Toilet Fixture Units . Vacuum drainage system sizing and design: 

1. shall be detennined from the manufacturer's data and engineering calculations; and 

2. shall be approved by the Manufacturer. 

(b) Conventional Fixture Units . Fixture units for gravity drainage systems discharging into 
or receiving discharge from vacuum drainage systems shall be determined as in 248 CMR 
10.15(7): Table 1. 

(c) Water Pipe Sizing . Factor Values for the purposes of water pipe sizing shall be in 
accordance with 248 CMR 10.14(4): Table 1: Minimum Sizes of Fixture Water Supply Lines 
and Factor Values as normal. In addition to Table 1, "Vacuum Toilets" shall be listed with 
a fixture unit value of one and shall be based upon Y2 gallon consumption per flush. 

(4) Traps and Vents . 

(a) Conventional Traps . Conventional fixtures shall be provided with traps as in 248 CMR 
10.23(2)(c)2. 

(b) Conventional Venting . Conventional fixtures shall be provided with vents as in 
248 CMR 10.23(2)(c)l. 

(c) Special Venting . 

1 . A vent shall be installed where a vacuum interface device is installed for interfacing 
to a gravity drainage system to prevent clearing of the gravity traps. 

2. The vent shall be no less than two inches in diameter and shall be sized in 
accordance with manufacturer's recommendations. 

(5) Vacuum Drainage Piping . 

(a) General . Detailed and fully dimensioned plans at a scale of not less than Va-inch equal 
one foot shall be submitted with all necessary data and engineering calculations for review 
and approval. 



3/11/05 248 CMR -243 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 



(b) Material . 

1 . Vacuum drainage piping materials shall be composed of materials suitable for waste 
handling and shall have a smooth and uniform bore. 

2. Joints and fittings shall provide a smooth interior transition. 

(c) Fixture Connection . Vacuum drainage piping shall be connected to fixtures or gravity 
drainage systems by Product- Approved devices as required by 248 CMR 10.23(2)(c). 

(d) Vertical Lifts . 

1. The sum total of vertical piping used to lift discharges in a single system shall not 
exceed 20 feet unless documented by detailed engineering calculations. 

2. There shall be no offsets in the vertical piping and the diameter of the lift piping shall 
not change throughout its height. 

(e) Changes in Direction . 

1 . Changes of Direction in vacuum drainage systems shall be made by the appropriate 
use of fittings having no internal obstructions to flow. 

2. The radius of such changes in direction whether by a single fitting or combination of 
fittings shall not be less than that formed by a long sweep Va bend of long radius 90° 
elbow. 

(f) Horizontal Runs . 

1 . Horizontal piping shall be installed with a pitch of not less than 0.2% in the direction 
of flow. 

2. A reforming pocket shall be installed in horizontal runs at intervals of no more than 
150 feet or as indicated on the approved plans. 

(g) Reforming Pockets . 

1. When required to re-establish the waste slug, reforming pockets shall be installed. 
Reforming pockets shall consist of a wye and three Va bends or 45's arranged such that 
the discharge enters the branch of the wye, is pocketed in a trap formed by the three 
bends and exits at an elevation equal to the entrance. 

2. The depth of the trap formed shall be at least I'/z times the diameter of the piping. 
(See Figure F- 1 .) A cleanout plug shall be installed on the wye. 

(h) Trapped Sections . Offsets to pass under obstructions in horizontal runs may be installed 
provided that such offsets ai-e constructed as reforming pockets and do not exceed thiee feet 
in length, except that Offsets may exceed three feet in length if a second reforming pocket 
is installed at the terminus of the offset. (See Figure F-2.) 
(i) Piping Connections . Vacuum Drainage system piping connections shall be as follows: 

1 . Horizontal piping connecting to horizontal piping shall enter from the top of the line 
by way of a wye fitting. (See Figure F-3.) 

2. Vertical lift piping connecting to horizontal piping shall enter from the top of the line 
by way of a wye fitting. Where design drawings show a check valve to be installed in the 
horizontal piping between the lift piping and the .branch inlet of the wye, such check 
valve shall be approved for use in vacuum waste drainage systems by the manufacturer 
of the system. The volume of the horizontal piping in direction of flow shall be at least 
ten times the volume of the vertical lift piping. (See Figure F-4.) 

3. Horizontal piping connecting to vertical lift piping shall be by way of a reforming 
pocket, (i'ee Figure F- 5.) 

4. Horizontal piping connection to vertical drop piping shall be by way of single wye 
branches. Multiple connections shall be at staggered levels. Double wyes or divided 
flow fittings are prohibited. (See Figure F-6.) 

5. Vertical Drop piping connection to horizontal runs shall be by way of a combination 
wye and Vs bend. (See Figure F-7.) 

(j) Pipe Sizing . 

1 . Vacuum drainage piping shall be sized in accordance with engineering principles. 

2. The installation of piping shall be in conformance with the sizes and layouts shown 
on the approved plans. 

3. The plans shall contain a statement attesting to review and acceptance of the 
proposed installation by the Product- Approved manufacturer of the system. 

4. EXCEPTION: When approved by the Inspector, minor installations, additions or 
relocations may be permitted without the submission of additional plans when provisions 
for such were clearly made in the original approved plans. 



3/11/05 248 CMR -244 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 




(k) Cleanouts . Qeanouts shall be provided in the following locations: 

1. Start of horizontal runs; 

2. Top of stacks; 

3. Reforming pockets; 

4. Horizontal changes in direction equal to or greater than 90°; 

5. Intervals of 50 feet in horizontal runs. 

(1) Tank Connections . Vacuum drainage piping shall enter the vacuum tank at its top. A 
full-port valve shall be installed at the connection, 
(m) Su pports and Bracing . 

1 . Vacuum Drainage piping shall be supported every six feet on its vertical portions and 
every four feet on its horizontal portions. 

2. The vacuum piping shall be braced to prevent any movement in the vertical and 
horizontal planes. 

3. Piping shall not rely on fixtures, collection tank or pumps for any portion of its 
support. Seismic restraint shall be installed as required by 780 CMR: The Massachusetts 
State Building Code. 

(n) Access . Service access shall be provided to cleanouts check valves and interface valves. 

(6) Vacuum Collection Tank Assembly . 

(a) General . A vacuum collection tank assembly shall be provided of sufficient capacity to 
maintain the required vacuum pressure when the collection tank is 75% filled with system 
discharge fluids. Size shall be calculated based on engineering principles and drawings shall 
contain a statement attesting to review and acceptance of the proposed installation by the 
approved manufacturer of the systems. 

(b) Location . A vacuum collection tank assembly located within a building shall be in a 
well ventilated room and to which access is restricted to authorized personnel. Vacuum 
collection tanks shall be protected from freezing. 

(c) Materials . 

1. Vacuum collection tanks shall be constructed of vacuum tight, welded steel 
construction or other Product- approved materials and capable of withstanding a sustained 
vacuum pressure of 29 inches of mercury. 

2. The interior of the tanks shall be treated to retard corrosion, the method of treatment 
shall be submitted with documentation for review and approval. 

(d) Access Hatch . 

1 . A gas tight, bolted access hatch not less than 1 4 inches in diameter shall be provided. 
The cover of the hatch shall bear a permanently affixed warning label indicating the 
presence within of toxic and flammable gases. 

2. The warning label shall contain directions regarding safety procedures to be observed 
when opening or entering the tank. 

3. A clear pathway not less than three feet in width shall be maintained from the exit of 
the room to the access hatch. 

(e) Vacuum Pumps . 

1 . The assembly shall be equipped with automatically operated, duplex vacuum pumps 
capable of drawing down to 19 inches of mercury, vacuum. 

2. Pumps shall have the capacity to maintain an operating vacuum in the system of 
1 6 inches of mercury. 

(f) Sewage Discharge Pumps . 

1. The assembly shall be equipped with automatically operated, duplex sewage 
discharge pumps each sized to accommodate the calculated flow. 

2. Discharge to the gravity drainage system or sewer shall be as required for sewage 
ejector's. 

(g) Vacuum Pump Discharge Piping . 

1 . Vacuum pump discharge piping shall be extended full size without creating traps to 
the exterior of the building, 

2. The termination of the piping shall be direction downward to avoid entry of rain or 
debris. 



3/11/05 248 CMR -245 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 



3. The termination shall be located at least two feet above a roof surface or 15 feet 
above a pedestrian surface and no closer than ten feet to any opening into a building. 

4. Discharge terminations may be horizontal through a wall. (See Figure F-8.) 
(h) Indication and Alarm . 

1 . Vacuum tank assemblies shall provide separate indication and alarm of low vacuum 
conditions and high sewage level. 

2. Alarm conditions may be in two or more stages. 

3. Early stage alarm may be transmitted for alerting service personnel to potential 
problems. 

4. Failure stage alarm shall automatically shut down the system and annunciate the 
problem. 

5. Alarm indicator shall be at a location that has the approval of the Inspector. 

(7) Tests and Demonstrations . 

(a) General . Recorded proof of all required tests and demonstrations shall be subinitted to 
the plumbing inspector. 

(b) Vacuum Drainage Piping . 

1 . Prior to installation of any special fixtures or gravity to vacuum interface devices, the 
entire vacuum drainage piping system shall be pressurized to not less than 15 psig and 
shall show no loss in gauge pressure for at least ten minutes. 

2. EXCEPTION: When approved by the inspector minor additions, alterations or 
repairs to an existing complying system may be done without the 1 5 psig air pressure test. 

(c) Gravity Drainage Piping . Conventional waste and vent piping shall be tested as required 
by 248 CMR 10.15: Sanitary Drainage Systems and 248 CMR 10.16: Vents and Venting. 

(d) Functional Test . 

1 . After completion of the entire system installation, the system shall be subjected to a 
vacuum pressure of 19 inches of mercury and shall be demonstrated to function as 
required by operating each device. 

2. Such demonstration shall be conducted in the presence of the manufacturers 
authorized representative. 

(8) Instructions . 

(a) Operation and Maintenance . Prior to final approval, the Inspector shall satisfy himself 
that written instructions on the operation and maintenance of the entire system has been 
delivered to the owner and that the owner has received on site instruction from the installer 
and manufacturer. 



3/11/05 248 CMR -246 



10.23: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE F-1 
REFORMING POCKETS 





CLEANOUJ. 
PLUG 








i-l/2 TIMES 
PIPE DIAMETER 


^ 




45 OEQREE ELBOW 



HGURE F-2 
TRAPPED SECTIONS 





3/11/05 



248 CMR - 247 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 



FIGURE-3 
HORIZONTAL TO HORIZONTAL CONNECTION 



90 LONG 

PATTERN 

ELBOW 



45 BRANCH 




j 45 BRANCH I 



TOP VIEW 



I SIDE VIEW I 



B 



45 BRANCH 



END VIEW 



FIGURE F-4 
VERTICAL LIFT TO HORIZONTAL CONNECTION 




3/11/05 



248 CMR - 248 



10.23: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE F-5 
HORIZONTAL TO VERTICAL LIFT CONNECTION 




FIGURE F-6 
HORIZONTAL TO VERTICAL DROP COK^NECTION 





NOTE: 

BRANCHES EWTERSNQ THE 
VERTICAL fVSASW AT THE SAIV1E 
LEVEL MUST BE STAGGERED 



FIGURE F-7 
VERTICAL DROP TO HORIZONTAL CONNECTION 




3/11/05 



248 CMR - 249 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 



FIGURE F-8 
VACUUM PUMP DISCHARGE PIPE TERMINATION 




s:^ 



LOW 15 - FEET 
ABOVE A WALKWAV 



FIGURE F-9 
TYPICAL VACUUM FIXTURE INSTALLATION 




\AS DEQREE ELBOW 



7 T^l 



VACUUM TOILET 



fS 



VERTICAL 
SEWER [VIAIN 



l-X/4" X l-X/2" X 2' 
REOUCIIMQ T-BRANCH 



45 0EQREE 
LATERAL TVPE 




VACUUM TOILET 



X 



s 



Lr 



HORIZOIVTAL PIPE CONNECTION 



sue 



2 



45 DEQREE 
LATERAL 



\j HORIZONTAL VACUUM 

SEWER MAIN 



3/11/05 



248 CMR - 250 



10.23: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE F-9 

TYPICAL VACUUM FIXTURE INSTALLATION 

(CONTINUED) 



45 DEGREE 
LATERAL 
ROM. '45 DEGREES 



HORIZONTAL 
VACUUM SEWER MAIW 



bOr 



LONG PATTERN 
ELBOW TYPICAL 




A - CONNECTION FROM ABOVE AND BENEATH 




SWING CHECK |>^ 
VALVE I \ 



/^S^ 



H 



B- SEPARATE MASNe 



SWING CHECK 
VALVES 



/^^ 



a 



<^^=rJl 



nJ 



^ 



C - LONG HORIZONTAL MAIN 



3/11/05 



248 CMR -251 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



10.23: continued 



FIGURE F- 10 
TYPICAL CLEANOUT LOCATIONS 





A-ENDOFHCHyZOWTALMAINS B - TOP OF VERTICAL TRUPiKS 




C- INTERVALS OF 50 FEET 




D - 90 DEGREE BENDS 




E - REFORMING POCKETS 



3/11/05 



248 CMR - 252 



10.23: continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



FIGURE F- 11 
VERTICAL LIFT RESTRICTIONS 



VERTICAL OFT ' 
(EWLAROEMENT NOT ACCEPTABLE) 






^ 










HORIZONTAL 
fVIAIN 








"Sr^ 


.. ... J 




r^ 1 









>v^ 



ACCEPTABLE 

ENLAROEIVIENT 



A - EMO OF HORIZONTAL MAINS 




h-1 ■»- h-2 •*- h-3 < J.5 Feet 



FIGURE F- 12 
PIPING SUPPORT REQUIREMENTS 





REGULATORY AUTHORITY 

248 CMR 10.00: M.G.L. c. 112, § 61; M.G.L. c. 142, §§ 13 and 21. 



3/11/05 



248 CMR - 253 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



NON-TEXT PAGE 



3/11/05 248 CMR -254 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



248 CMR 1 1 .00: EDUCATION AND EXPERIENCE STANDARDS AND REQUIREMENTS FOR 

LICENSURE 

Section 

U .0 1 : Scope and Application 

U .02: Education and Experience Requirements for Apprentices, Journeyman and Master Licensees; 

Education and Experience Requirements for Undiluted Liquefied Petroleum Gas Installers and 

Limited Undiluted Liquefied Petroleum Gas Installers 
11 .03: Application Requirements and Examination Administration 
1 1 .04: Mandatory Continuing Education (MCE) Requirements for Master and Journeymen Plumbers, Master 

and Journeyman Gasfitters and for Undiluted Liquefied Petroleum Gas Installers 
11.05: Qualifications and Requirements for Mandatory Continuing Education Providers and Instructors 
1 1 .06: Education Hour and Course Content Requirements to be Administered by Public, Private, Proprietary 

or Other Occupational Trade Schools 

11.01: Scope and Application 

(1) Scope . The provisions of 248 CMR 11.00 govern the educational and experience 
requirements for licensure as a journeyman plumber or journeyman gas fitter, licensure as a 
master plumber or master gas fitter and licensure as either an undiluted liquefied petroleum gas 
installer or limited undiluted liquefied petroleum gas installer. In addition, 248 CMR 1 1 .00 
governs the continuing education requirements for all licensed plumbers and gas fitters in the 
Commonvi'ealth. Finally, the provisions of 248 CMR 11.00 govem the requirements for 
providers of plumbing and gas fitting primary and continuing education. 

(2) Sections Declared Independent . 248 CMR 1 .00 through 1 1 .00 is hereby declared to be an 
independent section and part of section and the holding of any section or part of section to be 
void and ineffective for any cause shall not be deemed to affect any other section or part of 
section. 

1 1 .02: Education and Experience Requirements for Apprentices. Journeyman and Master Licensees: 
Education and Experience Requirements for Undiluted Liquefied Petroleum Gas Installers and 
Limited Undiluted Liquefied Petroleum Gas Installers 

(1) Qualifications as a Prerequisite to Sit for a Journeyman Plumber Examination . 

(a) A pprentice Plumbe;r Licensed before September 1 , 2008 . An applicant who is a licensed 
apprentice plumber and the apprentice license was received prior to September 1, 2008 in 
accordance with M.G.L, c. 142, § 3 A shall be required to complete the requirements in 248 
CMR 1 1 .02( 1 )(a) 1 . and 2. to be eligible to sit for the journeyman plumber examination. 

1 . Experience . The applicant shall furnish documentary proof satisfactory to the Board 
of having completed, within the three years preceding application, practical work 
experience that totals no less than 5,100 clock hours as a licensed apprentice working 
under the direct supervision of a Commonwealth of Massachusetts licensed master 
plumber or under the direct supervision of a Commonwealth of Massachusetts licensed 
journeyman plumber who is in the employ of a master plumber in accordance with 
M.G.L. c. 142, § 3, installing, repairing, or maintaining plumbing and gas piping systems, 
apparatus, devices, fixtures or other appliances typical to the discipline of the plumbing 
and gasfitting industry only. For the purposes of obtaining licensure as a journeyman 
plumber experience that is limited to installing HVAC components for the installation 
of heating systems, steam piping and hydronic heat piping shall not be considered 
qualifying experience. 

2. Education . 

a. The applicant shall furnish documentary proof of having received a high school 
diploma or the equivalent; and 

b. The applicant shall furnish documentary proof of having successfully completed 
by test review 300 clock hours of licensed apprenticeship educational plumbing and 
gasfitting theory approved by the Board over a period of no less than three years that 
includes but is not limited to the Board administered requirements of 248 CMR 
1 1 .00. No more than 150 hours of education may be obtained in a calendar year. 



7/13/07 248 CMR - 255 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.02: continued 



3. Public Comprehensive High School CareerA^ocational Technical School Program . 
An applicant who successfully completes a Public Comprehensive High School 
CareerA^ocational Technical School Program as the CVTE (Career Vocational Technical 
Education) educational standard framework and who otherwise meets the requirements 
of 248 CMR 11.00 may submit education and experience hours earned in the Public 
Comprehensive High School CareerA^ocational Technical School Program towards the 
journeyman plumbers education and experience requirements. The Board will grant to 
such applicant not more than 300 hours of educational theory credit and not more than 
1,700 hours of experience credit. 

a. Additional Requirements . In addition to 248 CMR 1 L02(l)(a)l. through 3., the 
applicant who was a student in the CVTE shall present documentation demonstrating 
that he or she has been licensed as an apprentice for a period of no less than two years 
and completed no less than 3,400 clock hours of practical experience as a licensed 
apprentice under the direct supervision of a master plumber or under a journeyman 
plumber who is in the employ of a master plumber in accordance with M.G.L. c. 142, 
§ 3 in order to be eligible to sit for the journeyman plumber examination. 

4. Apprentice Plumber License Renewal . An apprentice license shall not be renewed 
after four renewal cycles have elapsed. A licensed apprentice who has not successfully 
obtained a journeyman plumber license through the examination process following six 
examination attempts shall not be renewed. An apprentice who was licensed and whose 
license has not been renewed for non-compliance with the requirements of 248 CMR 
1 1.00 shall be permitted to petition the Board for reinstatement for good cause of his or 
her apprentice license. 

(b) Apprentice Plumber Licensed on or after September 1. 2008 . An applicant who is a 
licensed apprentice plumber and the apprentice license was issued on or after 
September 1, 2008 in accordance with M.G.L. c. 142, § 3 A or who began a plumbing 
education program on or after September 1, 2008 shall be required to complete described 
education and experience criteria in 248 CMR 1 1.02(l)(b)l. and 2. to be eligible to sit for 
the journeyman plumber examination. 

1 . Experience . The applicant shall furnish documentary proof satisfactory to the Board 
of having completed, within the five years preceding application, practical work 
experience that totals no less than 8,500 clock hours as a licensed apprentice working 
under the direct supervision of a Commonwealth of Massachusetts licensed master 
plumber or under the direct supervision of a Commonwealth of Massachusetts licensed 
journeyman plumber who is in the employ of a master plumber in accordance with 
M.G.L. c. 142, § 3, installing, repairing, or maintaining plumbing and gas piping systems, 
apparatus, devices, fixtures or other appliances typical to the discipline of the plumbing 
and gas fitting industry only. For the purposes of obtaining licensure as a journeyman 
plumber experience that is limited to installing HVAC components for the installation 
of heating systems, steam piping and hydronic heat piping shall not be considered 
qualifying experience. 

2. Education . 

a. The applicant shall furnish documentary proof of having received a high school 
diploma or the equivalent; and 

b. The applicant shall furnish documentary proof of having successfully completed 
by test review 550 clock hours of licensed apprenticeship educational plumbing and 
gasfitting theory approved by the Board over a period of no less than five years that 
includes but is not limited to the Board administrated requirements of 248 CMR 
11.00. Apprentices licensed on or after September 1, 2008 shall begin their 
education program within nine months of the initial issuance of that apprentice 
license. The 550 clock hours of education shall be completed in accordance with the 
Board of Examiners of Plumbers and Gasfitters Educational Standards. No more 
than 1 10 hours of education may be obtained in a calendar year; provided, however, 
that nothing in 248 CMR 1 1 .00 shall prohibit an apprentice from obtaining additional 
hours of education for the purpose of satisfying education hours required by the 
Apprentice Training Program of the Department of Workforce Development. 



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OF PLUMBERS AND GAS FITTERS 




1 1 .02: continued 




3. Public Comprehensive High School CareerA^ocational Technical School Program . 
An applicant who successfully completes a Public Comprehensive High School 
CareerA/'ocational Technical School Program as the CVTE (Career Vocational Technical 
Education) educational standard framework and who otherwise meets the requirements 
of 248 CMR 1 1.00 may submit education and experience hours earned in the Public 
Comprehensive High School CareerA^'ocational Technical School Program towards the 
journeyman plumber education and experience requirements. The Board will grant to 
such applicant not more than 330 hours of educational theory credit and not more than 
1 ,700 hours of experience credit to such applicant. 

a. Additional Requirements . 

i. In addition to 248 CMR 1 1 .02(l)(b) 1 . and 3., the applicant who was a student 
• in the CVTE shall present documentation demonstrating that he or she has been 
licensed as an apprentice for a period of no less than four years and completed no 
less than 6,800 clock hours of practical experience as a licensed apprentice under 
the direct supervision of a master plumber or under a journeyman plumber who 
is in the employ of a master plumber in accordance with M.G.L. c. 142, § 3 in 
order to be eligible to sit for the journeyman plumber examination, 
ii. the applicant who was a student in the CVTE shall present documentation 
demonstrating that he or she additionally has completed Tier Four and Tier Five 
in accordance with 248 CMR 11.00 at a Public, Private, Proprietary or other 
Occupational Trade School Program licensed by the Department of Education 
under M.G.L. c. 93, §§ 21 A through 21G or other College/University or 
supplementary Institution of Education approved by the Board and the 
Commissioner of Education; and 

4. Apprentice Plumber License Renewal . An apprentice license shall not be renewed 
after four renewal cycles have elapsed. A licensed apprentice who has not successfully 
obtained a journeyman plumber license through the examination process following six 
examination attempts shall not be renewed. An apprentice who is licensed and whose 
license has not been renewed for non-compliance with the requirements of 248 CMR 
1 1.00 shall be permitted to petition the Board for reinstatement for good cause of his or 
her apprentice license. 

(2) Oualifications as a Prerequisite to Sit for Master Plumber Examination . 

(a) Master Plumber Exam - Apprentice or Journeyman License Received before 
September 1,2008 . An applicant who is a licensed journeyman plumber and who received 
an apprentice license or journeyman license before September 1, 2008 and who applies to 
take the master plumber examination shall be required to complete the education and 
experience criteria in 248 CMR 11.02(2)(a)l. and 2. to be eligible to sit for the master 
plumber examination. 

1. Experience. The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion of no less than one year practical experience totaling a 
minimum of 1,700 clock hours of experience as the holder of a Commonwealth of 
Massachusetts journeyman plumber license and demonstrating that he or she has been 
actively engaged in or working at the business of installing repairing, or maintaining 
plumbing and gasfitting systems, apparatus, devices, fixtures or other appliances typical 
to the discipline of the plumbing and gasfitting industry only. 

2. Education . The applicant shall furnish documentation satisfactory to the Board of 
having completed by test review 100 clock hours of educational plumbing and gasfitting 
theory in a master plumber educational program, that is separate from the mandatory 
continuing education requirements, approved by the Board that includes but is not limited 
to the Board administered requirements of 248 CMR 1 LOO. 

(b) Mastey Plumber Exam - Apprentice or Journeyman License Received on or after 
September 1.2008 . An applicant who is a licensed journeyman plumber and who received 
an apprentice or a journeyman license on or after September 1, 2008 and who applies to takes 
the master plumber examination shall be required to complete the experience criteria in 248 
CMR 1 L02(2)(b) 1. and 2. to be eligible to sit for the master plumber examination. 



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248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.02: continued 

1 . Ex perience . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion of no less than one year practical experience totaling a 
minimum of 1,700 clock hours of experience as the holder of a Commonwealth of 
Massachusetts journeyman plumber license and has been actively engaged in or working 
at the business of installing repairing, or maintaining plumbing and gasfitting systems, 
apparatus, devices, fixtures or other appliances typical to the discipline of the plumbing 
and gasfitting industry only. 

2. Education . The education requirement for eligibility to sit for the master plumber 
examination shall be completed by successful completion of Tier Five of the five tier 
Plumber Educational Program as approved by the Board and described in 248 CMR 
11.06. 

(3) Qualifications as a Prerequisite to Sit for Journeyman Gasfitter Examination . 

(a) Apprentice Gasfitter Licensed before September 1 . 2008 . An applicant who is a licensed 
apprentice gasfitter and the apprentice license was received prior to September 1 , 2008 in 
accordance with M.G.L. c. 142, § 3A shall be required to complete the below described 
education and experience criteria to be eligible to sit for the journeyman gasfitter 
examination: 

1. Experience . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion, within the two years preceding application, of practical work 
experience of no less than 3,400-clock hours as a licensed apprentice working under the 
direct supervision of a licensed master gasfitter or under the direct supervision of a 
licensed journeyman gasfitter who is in the employ of a master gasfitter in accordance 
with M.G.L. c. 142, § 3, installing, repairing, or maintaining gas piping systems, 
apparatus, devices, fixtures or other appliances typical to the discipline of the gasfitting 
industry only. For the purposes of licensure as a journeyman gasfitter experience that is 
limited to installing HVAC components for the installation of heating systems, steam 
piping and hydronic heat piping shall not be considered qualifying experience. 

2. Education . 

a. The applicant shall furnish documentation to the Board of having received a high 
school diploma or the equivalent, and: 

b. The applicant shall furnish documentary proof of having completed by test review 
150 clock hours of apprenticeship gasfitting educational theory approved by the 
Board over a period of no less than two years that includes but is not limited to the 
Board administered requirements of 248 CMR 11. 00. 

3. A pprentice Gasfitter License Renewal . An apprentice license shall not be renewed 
after four renewal cycles have elapsed. A licensed apprentice gasfitter who has not 
successfully obtained a journeyman gasfitter license through the examination process 
following six examination attempts shall not be renewed. An apprentice who is licensed 
and whose license has not been renewed for non-compliance with the requirements of 
248 CMR 1 1.00 shall be permitted to petition the Board for reinstatement of his or her 
apprentice license. 

(b) Apprentice Gasfitter Licensed on or after September 1. 2008 . An applicant who is a 
licensed apprentice gasfitter and the apprentice license was received on or after 
September 1, 2008 in accordance with M.G.L. c. 142, § 3A shall be required to complete the 
education and experience criteria in 248 CMR 1 1.02(3)(b)l. and 2. to be eligible to sit for 
the journeyman gasfitter examination: 

1. Experience . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion, within the three years preceding application, of practical work 
experience of no less than 5,100-clock hours as a licensed apprentice working under the 
direct supervision of a licensed master gasfitter or under the direct supervision of a 
licensed journeyman gasfitter who is in the employ of a master gasfitter in accordance 
with M.G.L, c. 142, § 3, installing, repairing, or maintaining gas piping systems, 
apparatus, devices, fixtures or other appliances typical to the discipline of the gas fitting 
industry only. For the purposes of licensure as a journeyman gasfitter experience that is 
limited to installing HVAC components for the installation of heating systems, steam 
piping and hydronic heat piping shall not be considered qualifying experience. 

2. Education . 

a. The applicant shall furnish documentation to the Board of having received a high 
school diploma or the equivalent, and; 



7/13/07 248 CMR -258 




248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.02: continued 

b. The applicant shall furnish documentary proof of having completed by test review 

330 clock hours of apprenticeship gasfitting educational theory approved by the 

Board over a period of no less than three years that includes but is not limited to the 

Board administered requirements of 248 CMR 11.00. 

3. Apprentice Gasfitter License Renewal . An apprentice license shall not be renewed 

after four renewal cycles have elapsed. A licensed apprentice gasfitter who has not 

successfully obtained a journeyman gasfitter license through the examination process 

following six examination attempts shall not be renewed. An apprentice who is licensed 

and whose license has not been renewed for non-compliance with the requirements of 

248 CMR 1 1.00 shall be permitted to petition the Board for reinstatement of his or her 

apprentice license. 

(4) Qualifications as a Prerequisite to Sit for Master Gasfitter Examination . 

(a) Master Gasfitter Exam - Apprentice or Journeyman License Received before 
September 1. 2008 . An applicant who is a licensed journeyman gas fitter and who received 
an apprentice or a journeyman gasfitter license before September 1 , 2008 in accordance with 
M.G.L. c. 142, § 3 shall be required to complete the education and experience criteria in 
248 CMR 1 1.02(4)(a)l. and 2. to be eligible to sit for the master gasfitters examination. 

1. Ex perience . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion of no less than six calendar months of practical experience 
totaling a minimum of 850 clock hours of experience as the holder of a journeyman 
gasfitter license and has been actively engaged in or working at the business of, installing 
repairing, or maintaining gasfitting systems, apparatus, devices, fixtures or other 
appliances typical to the discipline of the gasfitting industry only. 

2, Educatjon . The applicant shall furnish documentation satisfactory to the Board of 
having completed by test review 50 clock hours of educational gasfitting theory in a 
master gasfitter educational program, separate from the mandatory continuing education 
requirements, approved by the Board that includes but is not limited to the Board 
administered requirements of 248 CMR 11.00. 

(b) Master Gasfitter Exam - Apprentice or Journeyman License Received on or after 
Se ptember 1.2008 . An applicant who is a licensed journeyman gas fitter and who received 
an apprentice or a journeyman gas fitter license on or after September 1 , 2008 in accordance 
with M.G.L. c. 142, § 3 shall be required to complete the experience criteria in 248 CMR 
1 1.02(4)(b)l. and 2. to be eligible to sit for the master gasfitter examination. 

Experience . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion of no less than one year practical experience totaling a minimum 
of 1,700 clock hours of experience as the holder of a Commonwealth of Massachusetts 
journeyman gasfitter license and has been actively engaged in or working at the business of 
installing repairing, or maintaining gasfitting systems, apparatus, devices, fixtures or other 
appliances typical to the discipline of the gasfitting industry only. 

(5) Qualifications as a Prerequisite to Sit for Undiluted Liquefied Petroleum Gas Installer 
Examination . 

(a) Undiluted Liquefied Petroleum Gas Installer Exam Taken on or after Septepiber 1 . 2008 . 
An applicant for licensure as an undiluted liquefied petroleum gas installer who takes the 
exam on or after September 1, 2008 shall be required to complete the education and 
experience requirements in 248 CMR 11.02(5)(a)l. and 2, to be eligible to sit for the 
undiluted liquefied petroleum gas installer examination. 

1. Experie)[)ce . The applicant shall furnish documentation satisfactory to the Board 
demonstrating completion, within two years preceding the date of the application, 
practical work experience of no less than 3,400 clock hours over a period of no less than 
two years specifically in the discipline of undiluted liquefied petroleum gas installations 
working under the direct supervision of a Commonwealth of Massachusetts licensed 
undiluted liquefied petroleum gasfitting installer licensed in accordance with 
M.G.L. c. 142, § 3, installing, repaying, or maintaining propane gas piping systems, 
apparatus, devices, fixtures or oflier appliances restricted to the discipline of the 
undiluted liquefied petfoleum gasfitting industry only. For the purposes of licensure as 
a undiluted liquefied petroleum gas installer experience that is limited to installing 
HVAC components for the installation of heating systems, steam piping and hydronic 
heat piping shall not be considered qualifying experience. 



7/13/07 248 CMR -259 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.02: continued 

2. Education . 

a. The applicant shall furnish documentation satisfactory to the Board of having 
received a high school diploma or the equivalent, and: 

b. The applicant shall furnish documentary proof of having completed by test review 
220 clock hours of undiluted liquefied petroleum gas educational theory in a 
undiluted liquefied petroleum gas educational program, separate from any mandatory 
continuing education requirements, approved by the Board that includes but is not 
limited to the Board administered requirements of 248 CMR 1 1 .00. 

(6) Qualifications as a Prerequisite to Sit for a Limited Undiluted Liquefied Petroleum Gas 
Installer Examination . An applicant for licensure as a limited undiluted liquefied petroleum gas 
installer shall be required to complete the education and experience requirements in 248 CMR 
1 1 ,02(6)(a) and (b) to be eligible to sit for the limited undiluted liquefied petroleum gas installer 
examination. 

(a) Experience . An applicant shall furnish documentary proof satisfactory to the Board of 
having a minimum of 1,700 hours of work experience in construction and familiarity with 
construction sites including supervised observation of and experience with the installation, 
connecting and relocating from place to place of portable construction type undiluted 
liquefied petroleum gas portable heating equipment. 

(b) Practical Examination . An applicant for a limited undiluted liquefied petroleum gas 
installer license shall be capable of demonstrating by both a practical exam and a written 
exam to the satisfaction of the examiner competence and skill in the fastening methods of 
undiluted liquefied petroleum gas cylinders and vessels associated with temporary 
construction equipment prior to being issued a license in accordance with M.G.L, c. 142, § 3. 

(7) Reciprocity and Out-of-state Master and Journeyman Licensee Requirements: Equivalency 
and Waivers . 

(a) Education or Experience Waivers and Equivalency . Applicants for master plumber 
licenses or journeyman plumber licenses who do not comply with the education or 
experience provisions of 248 CMR 11.00 may submit to the Board a written request 
petitioning that such experience or education be considered for approval as the equivalent 
of the specific experience and education requirements found in 248 CMR 11. 00 and for a 
waiver of so much of the experience or education requirements of 248 CMR 11 .00 that have 
not been completed. The written request shall contain documentation regarding the amount 
and type of educational theory courses completed and practical work experience obtained. 

(b) Reciprocity - United States Jurisdiction . An applicant who is licensed in another state 
or jurisdiction as a journeyman plumber or master plumber or equivalent and who is applying 
for the equivalent licensure in the Conunonwealth of Massachusetts shall meet the following 
requirements: 

1. Submit a completed application and the appropriate fee to the Board with 
documentation sufficient to demonstrate that the out of state license has been active for 
not less than the three years immediately preceding the date of application and 
documentation from the issuing jurisdiction that the requirements for obtaining and 
maintaining the license are substantially equivalent to the requirements in the 
Commonwealth of Massachusetts. 

2. Submit a statement certified by the Keeper of Records of the issuing jurisdiction that 
such license is current, in good standing, and that there is no pending disciplinary action 
relating to the license. 

(c) Reciprocity - International Jurisdiction . An applicant who is licensed in a jurisdiction 
outside of the United States as a journeyman or master plumber or the equivalent and who 
is applying for the equivalent licensure in the Commonwealth of Massachusetts shall meet 
the following requirements: 

1. Submit a completed application and the appropriate fee to the Board with 
documentation, translated into the English language, sufficient to demonstrate that the 
international license has been active for not less than the three years immediately 
preceding the date of application and documentation from the issuing international 
jurisdiction that the requirements for obtaining and maintaining the license are 
substantially equivalent to the requirements in the Commonwealth of Massachusetts. 



7/13/07 248 CMR - 260 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



1 1 .02: continued 

2. Submit a statement translated into the English language and certified by the Keeper 

of Records of the issuing international jurisdiction that such license or equivalent is 

current, in good standing, and that there is no pending disciplinary action relating to the 

license. 

(d) The Board reserves the right to request additional information regarding qualifications 

and may choose not to entertain or grant a request for education or experience waivers or 

applications from applicants who are licensed in another United States or international 

jurisdiction seeking licensure as a journeyman plumber or master plumber. 

11 .03: Application Requirements and Examination Administration 

(1) Application Materials . Examination applications are processed by the Board office and 
examination vendor on a daily basis. Exams are administered each day. It is the responsibility 
of the applicant for examination to make certain that all the required application documents and 
required supplementary documents demonstrating completion of experience and education 
requirements are completed before they are submitted for approval. 

(a) Applications which are not filed by the applicable deadline shall not be accepted. 

(b) Applications which are not complete, not legible, or are not accompanied by the 
required documentation, information and fee(s) shall not be accepted and shall be returned 
to the applicant. 

(c) Veterans . Qualified applicants for examination who are Veterans when making 
application for examination shall file a copy of their DD-214 Discharge Papers/Separation 
Papers. The DD-214 shall include the date of induction into active service and date of 
separation. 

Credit to Veterans . The Board shall grant a qualified applicant^who is a veteran as 
defined in M.G.L. c. 4, § 7, clause Forty-third a credit of 21/2% for the written theory portion 
of the exam and 2'/2% for the practical portion of the exam. 

(2) Reasonable Accommodations for Examinations . Qualified applicants for examination who 
are physically impaired or challenged by Doctor/Physician documented medical conditions may 
receive upon request other Board authorized reasonable accommodations as required by law. 
Documentation of the applicant's medical condition shall be filed when an application for 
examination is submitted. 

(3) Examination Scores . Qualified applicants for examination shall achieve the following to 
qualify for licensure: 

(a) Receive a score of no less than 70% to pass a written practical examination; and 

(b) Receive a score of no less than 70% to pass a written theory/code examination. 

(c) Applicants for examination who receive less than 70% and fail the written practical 
portion of the exam shall be required to retake the written practical portion of the 
examination only within one year from date of failure. 

Applicants who have not obtained a passing score on written practical portion of the 
examination and do not retest within one year from date of failure shall be required to retake 
all parts of the examination. 

(d) Applicants for examination who receive less than 70% and fail the written theory/code 
portion of the exam shall be required to retake the written theory/code portion of the 
examination only within one year from date of failure. 

Applicants who have not obtained a passing score on the written theory/code portion of 
the examination and do not retest within one year from date of failure shall be required to 
retake all parts of the examination, 

(4) Examination Review . 

(a) Any applicant who does not achieve a passing score on any part of an examination may 
apply to the Board's designated exam administrator in writing for an opportunity to review 
the examination. 

(b) Each applicant seeking review of an examination shall submit the requked fee for such 
review. 

(c) Applicants permitted to review an examination may not be accompanied by any 
person(s) while engaged in a review. 



7/13/07 248 CMR -261 



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OF PLUMBERS AND GAS FITTERS 



11,03: continued 

(d) The Board shall make all final decisions with respect to the validity of examination 
questions, applicant scores and applicant licensure. 

1 1 .04: Mandatory Continuing Education (MCE) Requirements for Master and Journeymen Plumbers. Master 
and Journeyman Gasfitters and for Undiluted Liquefied Petroleum Gas Installers 

(1) General Continuing Education Provisions . 

(a) Effective for all licenses expiring on or after April 30, 2010, Commonwealth of 
Massachusetts licensed plumbers and gasfitters shall during every two year license cycle 
complete a course of continuing education which shall consist of the following: 

1. 12-clock hours of continuing education per renewal cycle for plumbers; provided, 
however, that no more than six hours may be completed within any 12 month period of 
the renewal cycle; and 

2. six -clock hours of continuing education per renewal cycle for gasfitters and undiluted 
liquefied petroleum gas installers; provided, however, that no more than three hours may 
be completed within any 12 month period of the renewal cycle. 

(b) Continuing education requirements, including but not limited to policy, procedure, 
course content and approval and provider approval shall be established by the Board and 
administered by Board approved providers acting in accordance with Board rules, regulations 
and policies relative to the administration of continuing education requirements. Continuing 
education courses shall focus on the Rules and Regulations of 248 CMR 3.00 through 1 1 .00. 
In addition, the Board may approve continuing education courses may include industry 
related business, law, technology or other subject matter found applicable to the discipline 
of the plumbing and gasfitting industry and the professional development of the licensee. 

(2) Requirements for License Renevyal . 

(a) Except as othei-wise permitted in 248 CMR 1 1 .00, each licensed plumber, gasfitter or 
undiluted liquefied petroleum gas installer shall, as a condition of license renewal, present 
evidence satisfactory to the Board demonstrating that in the two year cycle immediately 
preceding license renewal of completion of the following as applicable: 

1. 12-clock hours of approved continuing education courses for plumbers with an 
approved provider; provided, however, that no more than six hours may be completed 
within any 12 month period of the renewal cycle; and 

2. six-clock hours of approved continuing education courses for gasfitters or undiluted 
liquefied petroleum gas installers with an approved provider provided, however, that no 
more than three hours may be completed within any 12 month period of the renewal 
cycle. 

(b) Every journeyman and master plumber licensee of the Board as a condition for license 
renewal, shall present documentation that one of the following requirement(s) has been 
satisfied and received from an authorized continuing education Provider per renewal cycle: 

12-clock hours of theory specifically related to the Rules and Regulations contained in 
248 CMR 3.00 through 11.00; provided, however, that no more than six hours may be 
completed within any 12 month period of the renewal cycle, or 

(c) Every Journeyman Gasfitter, Master Gasfitter or Undiluted Liquefied Petroleum Gas 
Installer licensee of the Board as a condition for license renewal, shall present documentation 
that the following requirement(s) has been satisfied and received from a authorized Provider 
per renewal cycle: 

six clock hours of theory specifically related to the Rules and Regulations contained in 
248 CMR 3.00 through 7.00; provided, however, that no more than three hours may be 
completed within any 12 month period of the renewal cycle. 

(d) Each licensee shall retain all Mandatory Continuing Education documentation for no 
less than three renewal cycles and shall furnish this documentation to the Board for 
verification of completion of the Continuing Education requirements if requested by the 
Board. 

(e) Licensees who reside within the Commonwealth of Massachusetts shall complete; 

1. 12-clock hours for plumber licensees continuing education with one or more 
approved providers; or 

2. six-clock hours for gasfitters licensees or undiluted liquefied petroleum gas installers 
of continuing education with one or more approved providers. 



7/13/07 248 CMR - 262 



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OF PLUMBERS AND GAS FITTERS 




1 1 .04: continued 




3. An online learning or non-online correspondence course approved by the Board may 
be used for no more than three hours of mandatory continuing education hours in each 
renewal cycle. 

(f) Licensees who reside outside the Commonwealth of Massachusetts may acquire; 

1 . 1 2-clock hours for plumber licensees of the required continuing education from one 
or more providers; or 

2. six-clock hours for gasfitters licensees or undiluted liquefied petroleum gas installers 
of the required continuing education from one or more providers, 

3. An online learning or non-online correspondence course may be used for no more 
than 50% of mandatory continuing education hours, 

(g) It shall be the licensee's responsibility to ensure that their Provider has been authorized 
by the Board. 

(h) The Board may establish additional course requirements as developments in the 
technology of the profession require, 

(3) Licensee Qualifications for Exemption of the (MCE) Mandatory Continuing Education 
Requirement . 

(a) A master plumber or gasfitter licensee who is approved in accordance with 248 CMR 
11, 04 as an Instructor or Provider shall be exempt from completing mandatory continuing 
education requirements subject to the below requirements: 

1 . The licensee has conducted two six clock hour seminars or courses within a renewal 
cycle period specifically related to the Rules and Regulations contained in 248 CMR 
3.00: through 11.00; or 

2. The licensee is a qualified and duly appointed Inspector, Assistant Inspector or 
Alternate Inspector of Plumbing and/or Gasfitting appointed pursuant to M.G,L. c. 142, 
§ lib and has successfully completed the continuing education requirements of 
M.G.L c, 142, § lib. 

3. The licensee is a State Inspector/Investigator or is the Executive Director or Associate 
Executive Director for the Board of Examiners or Plumbers and Gasfitters and employed 
by the Commonwealth of Massachusetts Division of Professional Licensure (DPL). 

4. The licensee is an appointed member of the Board of Examiners of Plumbers and 
Gasfitters. 

5. The licensee is 65 years of age or older whose license is in good standing and who 
is not for hire or regularly employed by a master plumber or master gasfitter. 

(b) Issuance of an Initial License Six Months Preceding the Bi-annual Renewal Date . Any 
holder of a license initially issued by the Board following examination during the 180 days 
preceding the May 1" bi-annual license renewal date shall be given a waiver of such 
continuing education requirement for the license renewal cycle in effect at the time of initial 
licensure only. 

(c) Waivers for Other Good Cause . 

1 . The Board or Board authorized designee may consider the granting of a waiver of the 
mandatory continuing education requirements for other good cause shown. The waiver 
request shall be in writing and shall be accompanied by other supporting documentation 
that the licensee desires the Board to consider before ruling on the waiver request 

2. The Board or Board authorized designee may at its discretion consider a written 
request for a waiver from the continuing education requirement under the following 
circumstances: 

3. Illi)ess or Disabiljfy of the Licensee or Immediate Family Member . A request for a 
waiver based on illness, disability, or other medically-related condition shall be in writing 
and accompanied by a letter addressed to the Board written and signed by a licensed 
medical physician stating the nature of the licensee's or the inmiediate family member's 
medical condition and the correlation between that condition and circumstance and the 
licensee's inability to complete the required continuing education within the required 
period. 

(4) failure by a Licensee to Complete (MCEI Mandatory Continuing Education Req ii jirement . 
(a) Any licensee who does not complete the required clock hours of continuing education 
within the license renewal cycle shall complete one additional 12 clock hour course cycle for 
plumber licensees and/or one six-clock hour course cycle for gasfitter licensees for each 
renewal cycle for which the licensee is delinquent. 



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OF PLUMBERS AND GAS FITTERS 



1 1 .04: continued 

(b) The additional required mandatory continuing education courses in 248 CMR 
1 1.04(4)(a) shall be taken in the following manner: 

1 . Each course shall be provided by a different instructor; and 

2. the licensee shall provide documentation as evidence from the provider that 
completion of all required continuing education has been satisfactorily achieved. 

(c) If a licensee fails to complete continuing education requirements for any renewal cycle 
the renewal of the license or license(s) of the licensee shall be subject to Board review and 
disciplinary action that may include but not be limited to re-examination. 

(5) Initial Certificate and Documentation of Completion of (MCE) Mandatoiy Continuing 
Education Requirements . 

(a) Upon the successful completion of the clock hours of continuing education each licensee 
shall receive from his or her board approved continuing education provider a certificate of 
completion. 

(b) Each licensee shall retain such documentation for three renewal cycles and shall furnish 
it to the Board for verification of completion of the mandatory continuing education 
requirements if so requested. 

(6) Duplicate (MCE) Mandatory Continuing Education Certificate . 

(a) Any licensee whose certificate of completion has been lost or destroyed shall obtain a 
duplicate certificate from the original provider by forwarding a written request including the 
reason(s) for the duplicate and any fee required by the Provider. 

(b) It shall be the responsibility of the licensee to make available all certificates to the Board 
if requested by the Board, 

(7) Falsification of Information or Fraudulent Transfer of Mandatory Continuing Education 
Certificates of Completion . The falsification of any Mandatory Continuing Education or the 
transfer of a certificate of completion of continuing education to any individual in order to meet 
Mandatory Continuing Education license renewal requirements shall be grounds for the initiation 
of formal disciplinary proceedings against the licensees found to have engaged in such 
misconduct, up to and including suspension or revocation of any license(s) issued by the Board. 

1 1 .05: Qualifications and Requirements for Mandatory Continuing Education Providers and Instructors 

(1) Oualifjcations and Requirements for Mandatory Continuing Education Providers . 

(a) A Provider of Mandatory Continuing Education seminars or courses may include: 

1. vocational schools; 

2. association-sponsored programs; 

3. labor training programs; 

4. employer training programs; 

5. private program. 

(b) All Providers seeking Board approval to conduct programs for Mandatory Continuing 
Education within or outside of the Commonwealth of Massachusetts shall meet the 
requirements in 248 CMR 11.05(l)(b)l. through 6.; 

1. Complete and submit the Provider Application Form. 

2. Submit the form to the Board or its designee for review and approval. 

3. Complete and submit the Provider Agreement Form which shall be accompanied by 
the appropriate application fee. 

4. Include with the Application Form and Agreement a detailed outline of each course 
of study offered, the names and license numbers of all master license instructors 
employed by the Provider as instructors in courses for which the Provider is seeking 
Board approval. 

5. Proof of liability insurance satisfactory to the Board shall be provided. 

6. The applicant Provider shall provide a copy of an indemnification bond in such form 
and amount as shall be required by the Board, 

(c) The Board may withdraw without notice at any time its approval as issued to any 
Provider or issued for any program, course or instructor who, in the Board's opinion and in 
its sole discretion, no longer meets the requirements for approval established by the Board. 



7/13/07 248 CMR - 264 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FnTERS 



11.05: continued 




(2) Instructor Qualifications to Conduct (MCE) Mandatory Continuing Education Courses . 

(a) Provider instructors shall be master licensees and shall be approved by the Board before 
being authorized to serve as an instructor for any Mandatory Continuing Education course. 

(b) Each Provider shall notify the Board in writing of any change of instructors for any 
course within ten days of the change. 

(c) Provider instructors of Mandatory Continuing Education courses shall be master 
licensed plumbers in order to be approved to instruct in plumbing courses or licensed master 
gasfitters in order to be approved to instruct in gas fitting courses. 

(d) The Board may approve other individuals who are not licensed master plumbers or 
master gasfitters to serve as instructors of Mandatory Continuing Education courses where 
those individuals have a demonstrated competency in subject areas applicable to the 
plumbing and gasfitting industry. 

(3) Mandatory Continuing Education Record Keeping Requirements . 

(a) Mandatory Continuing Education Records . All authorized Providers shall maintain for 
a period of no less than three license renewal cycles complete and accurate records for each 
licensee to whom the provider has issued a Certificate of Completion of Continuing 
Education. 

(b) Mandatory Continuing Education Certificates of Completion . A Certificate of 
Completion of Mandatory Continuing Education Seminar Course record shall include all of 
the following information: 

1 . Three digit Provider number as issued by the Board. 

2. Instructor's name and license number. 

3. Instructor's actual or electronic signature signed under pains and penalties of perjury. 

4. Course date. 

5. Classroom clock hours of instruction and course subject matter. 

6. Provider nine digit Division of Professional Licensure (DPL) security pin number. 

7. Provider phone number. 

8. Attendee name and his or her license number. 

(c) Approved Providers shall maintain a current approval certificate that is in good standing 
with the Board. 

(d) Approved Providers shall possess and maintain electronic technology acceptable to the 
Board. 

(e) Each approved Providers shall at its own expense and in a format approved by the Board 
electronicsJly transmit to the Board or its designee certification of each licensee's completion 
of the continuing education course within two working days of the completion date of the 
course. The certification shall contain the following data and information: 

1. Names and license number(s) of all licensees attending the continuing education 
course. 

2. Date of the course. 

(f) The Board may charge course providers a fee to recover costs for software and for 
training Providers in the use of that software. 

(g) All records maintained by the provider shall be made available to the Board or its 
designee within ten days upon request. 

(h) Each provider shall be responsible for the security of the Board issued provider nine 
digit number and authorization certificate in accordance with 248 CMR 1 1.00. 
(i) Falsification of any information relating to Mandatory Continuing Education 
requirements by the Provider shall result in the revocation of any approval provided by the 
Board to any Provider engaging in such misconduct. In addition, the Board may initiate any 
other legal action it deems appropriate in the circumstances, including but not limited to 
criminal prosecution. Any licensee(s) participating in such misconduct shall be the subject 
of formal disciplinary proceedings, including but not limited to both administrative and 
criminal proceedings. 

(4) Providers shall offer continuing education courses in one of the following formats only: 

(a) No more than six hours of classroom instruction may be presented in one day. 

(b) Three hours of classroom instruction presented in one day. 

(c) An online leaming or written correspondence course approved by the Board. 



7/13/07 248 CMR -265 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.05: continued 

(d) Providers shall limit the number of students for any continuing education class to no 
more than 49. 

(e) Providers shall not advertise or promote the sale of specific goods and/or services during 
the course of any continuing education class. 

(f) A provider's approval to offer instruction in Continuing Education expires on the last 
day of each license renewal cycle. 

(g) The Board may withdraw without notice at any time its approval of any Provider 
instructor who fails to meet the educational criteria established in 248 CMR 11. 00. 

(h) The Board may deny approval of an application from a provider for any of the following 
reasons: 

1 . failure to comply with the provisions of 248 CMR 1 1.05(4); 

2. inadequate or unprofessional coverage of the materials required to be included in the 
course materials; or 

3. unsatisfactory evaluations of the course materials by instructors, licensees, the Board 
or its designee. 

(i) If an application is refused or not approved, written notice explaining the basis for the 
decision shall be provided to the applicant by the Board or its designee 

(5) Course Materials . The Board shall approve course materials to be used for Mandatory 
Continuing Education courses. Course materials are the printed materials that serve as the basis 
for the Mandatory Continuing Education courses provided to licensees. The following minimum 
criteria shall be used by the Board in considering approval of course materials; 

(a) The course materials shall provide the basis for a minimum of three classroom hours of 
instruction per course as approved by the Board. 

(b) Course materials shall not advertise or promote the sale of goods and/or services. 
Advertisements used in conjunction with course materials must be clearly identifiable as such 
and clearly labeled as advertising. 

(c) The Board shall approve a minimum of two vendors to offer course materials as needed, 
in correspondence form and make it available for a period of two years for the renewal of an 
expired license. 

(d) The provider of course materials must have legal ownership of, or the appropriate 
license for the use of all copyrighted material included within the course materials. 

(e) All Board approved course materials shall contain a prominently displayed approval 
statement containing the following language: "THIS CONTINUING EDUCATION 
COURSE MATERIAL HAS BEEN APPROVED BY THE MASSACHUSETTS STATE 
BOARD OF EXAMINERS OF PLUMBERS AND GASFITTERS. BY APPROVAL OF 
THIS COURSE MATERL\L. THE BOARD DOES NOT ASSUME ANY 
RESPONSIBILITY FOR THE ACCURACY OF THE CONTENTS. THIS COURSE 
MATERL\L IS NOT BEING PUBLISHED BY NOR IS A PUBLICATION OF THE 
BOARD." 

1 1 .06: Education Hour and Course Content Requirements to be Administered bv Public. Private. Proprietary 
or Other Occupational Trade Schools 

(1) Educational Requirements for Applicants who Attend a Comprehensive Public High School 
Ci^reer/Vocational-Technical School Program as a Prerequisite to Sit for Journeyman Plumbers 
Examination . Effective beginning September 1, 2008, an applicant who successfully completes 
a Public Comprehensive High School CareerA^ocational Technical School Program as the CVTE 
(Career Vocational Technical Education) educational standard framework and who otherwise 
meets the requirements of 248 CMR 1 1 .00 may submit educational hours earned in the Public 
Comprehensive High School CareerA'ocational Technical School Program towards the 
journeyman plumbers education examination requirements where the following requirements are 
met; 

(a) Experience . The applicant who was a student shall present documentation 
demonstrating that he or she complies with the Public Comprehensive High School 
CareerA'^ocational-Technical School Experience Accumulation Standard 248 CMR 1 1.00 
for partial credit. 



7/13/07 248 CMR - 266 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




11.06: continued 





The 330 clock hours of theory and one year of practical experience required for licensure 
by the Board shall be considered incorporated and acceptable when administrated by a Public 
Comprehensive High School CareerA^ocational Technical School Program as the CVTE 
(Career Vocational Technical Education) educational standard framework approved by the 
Department of Education and the State Board of Examiners of Plumbers and Gasfitters under 
M.G.L. c. 74. 

(b) Experience/Education Hours Credit . Students who attended a Public Comprehensive 
High School CareerA'^ocational-Technical School Program approved by the Board and the 
Department of Education under M.G.L. c. 74 and the student successfully and satisfactorily 
completed an educational standard that demonstrates occupational proficiency in the 
discipline of plumbing and gasfitting shall accumulate and be granted on an annual basis the 
following hours of education and experience: 

1. 560-clock hours/four-months credit for plumbing and gasfitting practical work 
experience; and 

2. 1 10-clockhours credit for plumbing and gasfitting educational theory experience and; 

3. Students shall accumulate and be granted no more than 1 ,700-clock hours/ 1 2-months 
credit for plumbing and gasfitting practical work experience and; 

4. no more than 330-clock hours credit for plumbing and gasfitting apprenticeship 
educational theoiy. 

5. Vocational technical school students shall not be considered as licensed apprentices 
unless the student is in the employ of a master plumber in compliance with 
M.G.L c. 142, § 3A. 

(c) The Board reserves the right to alter or amend the requirements of 248 CMR 1 1 .00 in 
the exercise of its sole discretion on its initiative or in response to a petition of the authorized 
authority of a Public Comprehensive High School Cai-eerA^ocational-Technical School 
Program approved by the Department of Education under M.G.L. c. 74 and the requirements 
of248 CMR 11.00. 

(2) Educational Requirements for Applicants who attend a Public. Private. Proprietary or other 
Occupational Trade School Administering Programs to Meet Oualific^tions to sit for a 
Plumbing. Gasfitting of Undiluted Liquefied Petroleum Gasfitting Journeyman or Master License 
Examination and the Applicant was Licensed as an Apprentice jpefore September 1. 2008 . 

(a) An applicant who successfully completes a Public, Private, Proprietary or other 
Occupational Trade School Education Standard and who otherwise meets the requirements 
of 248 CMR 1 1.00 may submit educational hours earned in the Public, Private, Proprietary 
or other Occupational Trade School Education Standard towards the journeyman plumber 
education requirements. The applicant who completed such a program shall present 
documentation demonstrating that he or she successfully completed a program which 
complies with the Public, Private, Proprietary or other Occupational Trade School Education 
Standard in 248 CMR 1 1.00 in order to obtain education hours credit. 

(b) The clock hour courses for combination plumbing and gasfitting classes or the clock 
hour courses for gasfitting or undiluted liquefied petroleum classes as administrated by a 
public, private, proprietary or other Occupational Trade School Program licensed by the 
Department of Education under M.G.L. c. 93, §§ 21 A through 21G or other 
College/University or supplementary Institution of Education approved by the Board and the 
Commissioner of Education shall be subject to the requirements of 248 CMR 11. 00 for a 
licensed apprentice to be eligible for examination as a journeyman plumber or journeyman 
gasfitter or to be eligible for examination for licensure as an undiluted liquefied petroleum 
installer, 

(c) The Board of Examiners of Plumbers and Gasfitters published educational standard for 
the Public, Private, Proprietary or other Occupational Trade School 50, 75, 100, 150 or 300 
clock hour plumbing, gasfitting or undiluted liquefied petroleum gas educational programs 
shall be administered in the following manner: 

1 . Education Hours Requirements for Apprentice Plumbers . The 300 clock hour course 
shall be segregated into two-Tiers with Modules for apprentice's candidates only. 

2, ]Bach Tier shall Contain no Less than 1 50-clock hours . A Tier may be segmented into 
two 75-clock hour courses. 



7/13/07 248 CMR - 267 



11.06; continued 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



a. no more than 150 clock hours in theory shall be obtained in one calendar year. 

b. Apprentice applicants for licensure as a journeyman plumber shall complete 300 
clock hours of plumbing and gasfitting educational theory. This educational theory 
requirement shall not be deemed to have been met if the educational theory hours are 
obtained in a master level course. 

c. The journeyman licensee applicant shall demonstrate proficiency and competency 
in the discipline of plumbing and gasfitting by test review. 

d. Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Standards. 

3. Education Experience for Journeyman Plumber Applicants fpr Master Plumber 
Examination . The 100 clock hour Board educational standard for master plumber 
examination applicants only may be segregated into two Tiers with modules or may be 
a single module. 

a. Joumeyman applicants for licensure as a master plumber shall successfully 
complete 100 clock hours for plumbing and gasfitting educational theory. This 
educational theory requirement shall not be deemed to have been met if the 
educational theory hours are obtained in an apprentice level course. 

b. The joumeyman licensee applicant for the master plumber license examination 
shall demonstrate proficiency and competency in the discipline of plumbing and 
gasfitting by test review. 

4. Specific Education Requirements for Programs for Journeyman or Master Plumber 
A pplicants . Each Tier shall include coverage in but shall not be limited to the following 
subjects: 

a. The Board adopted most current edition of 248 CMR 3.00 through 1 1.00 that 
includes M.G.L. c. 142, Supervision of Plumbing; 

b. 24% CMR 3 .00; General Provisions Governing the Conduct of Plumbing and Gas 
Work Performed in the Commonwealth; 

c. 248 CMR 4.00: Introduction and Massachusetts Modifications; 

d. 248 CMR 5.00: Amendments to 2002 Edition of ANSI 1223. 1 NFPA-54\ 

e. 248 CMR 7.00: Massachusetts Code for Gas Utilization Equipment in Large 
Boilers; 

f. 248 CMR 10.00: Uniform State Plumbing Code; 

g. Occupational Safety and Health Administration (OSHA) Rules and Regulations 
including the Construction Outreach Training Program; 

h. Material Safety Data Sheets (MSDS); and 

i. Dig Safe Systems in the Commonwealth of Massachusetts, M.G.L. c. 82, § 40. 

5. Education Experience for Apprentice Gasfitters . The 150-clock hour gasfitting 
course shall be segregated into one or two Tiers with Modules for apprentices only. A 
Tier may be segmented into two 75-clock hour courses. 

a. Apprentice applicants for licensure as a journeyman gasfitters shall successfully 
and satisfactorily complete 150 clock hours of gasfitting educational theory. 

b. The joumeyman licensee applicant shall demonstrate proficiency and competency 
in the discipline of gasfitting by test review. 

c. Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Policy Standards. Gasfitting courses shall be designed by 
segregating the educational standards that relate to natural or propane gasfitting and 
gas fitting regulations 

6. Education Experience for Joumevman Gasfitter Applicants for the Master Gasfitter 
Examination . The 50 clock hour Board educational standard for master gasfitter 
examination applicants shall be administered in a single Tier module only. 

a. Joumeyman applicants for licensure as a master gasfitters shall successfully and 
satisfactorily complete 50 clock hours of gasfitting educational theory. This 
educational theory requirement shall not be deemed to have been met if the 
educational theory hours are obtained in an apprentice level course. 

b. The joumeyman licensee applicant for the master gasfitter examination shall 
demonstrate proficiency and competency in the discipline of gasfitting by test review. 



7/13/07 248 CMR -268 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




11.06: continued 




c. Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Policy Standards. Gasfitting course shall be designed by 
segregating the educational standards that relate to natural or propane gasfitting and 
gas fitting regulations 

7. Education Experience for Applicants for Examination for Licensure as Undiluted 
Liquefied Petroleum Gas Installers Effective September 1. 2008 . The 150 clock hour 
Board educational standard for undiluted liquefied petroleum gas installer examination 
applicants may be segregated into two-Tiers with modules or may be a single module. 

a. Applicants for examination for licensure as undiluted liquefied petroleum gas 
installers shall successfully and satisfactorily complete 1 50 clock hours of undiluted 
liquefied petroleum gas installation educational theory. This educational theory 
requirement shall not be deemed to have been met if the educational theory hours are 
obtained in a course other than an undiluted liquefied petroleum gas program. 

b. The applicant shall demonstrate proficiency and competency in the discipline of 
undiluted liquefied petroleum gas installation by test review. 

c. Each Tier shall be administered and designed in compliance with the Board of 
Exaniiners Educational Policy Standards. The undiluted liquefied petroleum gas 
installation course shall be designed by including the educational standards that relate 
to undiluted liquefied propane gasfitting and propane gas installation only. 

8. Specific Education Requirements for Gasfitting Programs . Each Tier shall include 
but shall not be limited to the following subjects; 

a. The Board adopted most current edition of 248 CMR 3.00 through 1 1 .00; 

b. M.G.L. c. 142: Supervision of Plumbing; 

c. 248 CMR 3.00: General Provisions Governing the Conduct of Plumbing and 
Gas Work Performed in the Commonwealth', 

d. 248 CMR 4.00: Introduction and Massachusetts Modifications; 

e. 248 CMR 5.00: Amendments to 2002 Edition ofANSlZ223J NFPA-54; and 

f. 248 CMR 7.00: Massachusetts Code for Gas Utilization Equipment in Large 
Boilers, 

9. Each Tier shall be Administered and Designed in Compliance with the Board of 
Examiners Educational Policy Standards . Gasfitting courses shall be designed by 
segregating the educational standards that relate to natural or propane gasfitting and gas 
fitting regulations. 

a. All Public, Private, Proprietary or Occupational Trade School Program licensed 
by the Department of Education under M.G.L. c. 93, §§ 21 A through 21G,or other 
College/University or supplementary Institution of Education shall be approved by 
the Board or its designee and the Commissioner of Education annually. 

b. Apprentices may not advance from one Tier to another Tier until the clock hour 
requirement has been satisfied in the preceding Tier and the apprentice has 
successfully completed by test review the preceding Tier. 

c. Individuals who fail to complete a Tier in accordance with 248 CMR 1 1 .00 shall 
be required to fulfill the Tier completion requirements by attending make-up classes 
in the Tier that they have not completed. 

10. The Board reserves the right to alter or amend in the exercise of its sole discretion 
the requirements of 248 CMR 11.00 relative to the educational standards to be 
administered by the Private Proprietary Occupational Trade School Program licensed by 
the Department of Education under M.G.L. c. 93, §§ 21A through 21G or other 
College/University or supplementary Institution of Education approved by the Board and 
the Commissioner of Education. 

(3) Administrative Requirements for Public. Private. Proprietary or other Occupational Trade 

School that Administer Programs as a Prerequisite for Applicants to sit for a Plumbing. 

Gasfitting or Undiluted Liquefied Petroleum Gasfitting Examination and the Applicant Was 

Licensed as an Apprentice on or after September 1. 2008 . 

(a) Instructor Qualifications . All plumbing and/or gasfitting instructors shall be licensed 
as masters in compliance with M.G,L. c. 142, § 3 and where applicable certified in 
compliance with all Department of Education requirements. Plumbing and/or gasfitting 
instructors shaE only be qualified to instruct within the discipline of their license. 



7/13/07 248 CMR - 269 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



1 1 .06: continued 



(b) Education Hours Requirements for Apprentice Plumbers . The 550-clock hour program 
shall be administered in the following manner: 

1 . The course shall be segregated into five Tiers with modules. 

2. Each Tier shall contain no more than 1 10-clock hours. 

3. Each Tier shall be consecutive and shall be designed to coincide with the years of 
experience of the apprentice student. For example, Tier One should be designed to 
educate an apprentice with no experience to one year of experience. Tier Two should be 
designed for an apprentice with two years of experience. 

4. Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Standards. 

5. The applicant for journeyman license shall demonstrate proficiency and competency 
in the discipline of plumbing and gasfitting by test review. 

6. Each Tier shall include coverage in but shall not be limited to the following subject 
areas: 

a. M.G.L. c. 142; Supervision of Plumbing', 

h. 248 CMR 3.00: General Provisions Governing the Conduct of Plumbing and 

Gas Work Performed in the Commonwealth; 

c. 248 CMR 4.00: Introduction and Massachusetts Modifications; 

d. 248 CMR 5.00: Amendments to 2002 Edition of ANSI 2223.1 NFPA-54; 

e. 248 CMR 7.00: Massachusetts Code for Gas Utilization Equipment in Large 
Boilers; 

f. 248 CMR 10.00: Uniform State Plumbing Code; 

g. Occupational Safety and Health Administration (OSHA) Rules and Regulations 
including the Construction Outreach Training Program. 

h. Material Safety Data Sheets (MSDS) 

i. Dig Safe Systems in the Commonwealth of Massachusetts, M,G.L. c. 82 § 40, 

(c) Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Policy Standards. Gasfitting courses shall be designed by segregating 
the educational standards that relate to natural or propane gasfitting and gas fitting 
regulations. 

a. All Public, Private, Proprietary or Occupational Trade School Program licensed 
by the Department of Education under M.G.L. c. 93, §§ 21 A through 21G,or other 
College/University or supplementary Institution of Education shall be approved by 
the Board or its designee and the Commissioner of Education annually. 

b. Apprentices may not advance from one Tier to another Tier until the clock hour 
requirement has been satisfied in the preceding Tier and the apprentice has 
successfully completed by test review the preceding Tier. 

c. Individuals who fail to complete a Tier in accordance with 248 CMR 1 1 .00 shall 
be required to fulfill the Tier completion requirements by attending make-up classes 
in the Tier that they have not completed. 

(d) An applicant who successfully completes a Public, Private, Proprietary or other 
Occupational Trade School Education Standard and who otherwise meets the requirements 
of 248 CMR 11. 00 may submit educational hours earned in the Public, Private, Proprietary 
or other Occupational Trade School Education Standard towards the journeyman plumber 
education hour requirements. The applicant who completed such a program shall present 
documentation demonstrating that he or she successfully completed a program which 
complies with the Public, Private, Proprietary or other Occupation^d Trade School Education 
Standard in 248 CMR II. 00 in order to obtain education hours credit. 

(e) The clock hour courses for combination plumbing and gasfitting classes or the clock 
hour courses for gasfitting or undiluted liquefied petroleum classes as administrated by a 
public, private, proprietary or other Occupational Trade School Program licensed by the 
Department of Education under M.G.L. c. 93, §§ 21A through 21G or other 
College/University or supplementary Institution of Education approved by the Board and the 
Commissioner of Education shall be subject to the requirements of 248 CMR 1 1.00 for a 
licensed apprentice to be eligible for examination as a journeyman plumber or journeyman 
gasf itter or to be eligible for examination for licensure as an undiluted liquefied petroleum 
installer. 



7/13/07 248 CMR -270 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 




1 1 .06: continued 




(f) Education Experience for Journeyman Plumber Applicants for Master Plumber 
Examination . Master plumber examination applicants shall have completed Tier Five of the 
five Tier educational program. The journeyman licensee applicant for the master plumber 
license examination shall demonstrate proficiency and competency in the discipline of 
plumbing and gasfitting by test review. 

(g) Specific Education Requirements for Programs for Master Plumber Applicants . Tier 
Five shall be designed to provide educational theory to applicants seeking master level 
licensure, and shall include coverage in but shall not be limited to the following subjects: 

1. The Board adopted most current edition of 248 CMR 3.00 through 11.00 that 
includes M.G.L. c. 142: Supervision of Plumbing; 

2. 248 CMR 3.00: General Provisions Governing the Conduct of Plumbing and Gas 
Work Perfonned in the Commonwealth; 

3. 248 CMR 4.00: Introduction and Massachusetts Modifications; 

4. 248 CMR 5.00: Amendments to 2002 Edition ofANSIZ223J NFPA-54; 

5. 248 CMR 7.00; Massachusetts Code for Gas Utilization Equipment in Large 
Boilers; 

6. 248 CMR 10.00: Uniform State Plumbing Code; 

7. Occupational Safety and Health Administration (OSHA) Rules and Regulations 
including the Construction Outreach Training Program; 

8. Material Safety Data Sheets (MSDS) 

9. Dig Safe Systems in the Commonwealth of Massachusetts, M.G.L. c. 82 § 40. 

(h) Education Experience for Apprentice Gasfitters . The 330-clock hour gasfitting 
educational program shall be segregated into three Tiers with modules for apprentices only. 
Apprentice applicants for licensure as a journeyman gasfitters shall successfully and 
satisfactorily complete 330 clock hours of gasfitting educational theory. The applicant for 
journeyman license shall demonstrate proficiency and competency in the discipline of 
gasfitting by test review. Gasfitting courses shall be designed by segregating the educational 
standards that relate to natural or propane gasfitting and gas fitting regulations, 
(i) Education Experience for Journeyman Gasfitter Applicants for the Master Gasfitter 
Examination . Master gasfitter examination applicants shall have completed Tier Three of 
the three tier gasfitter educational program. The journeyman licensee applicant for the 
master gasfitter license examination shall demonstrate proficiency and competency in the 
discipline of gasfitting by test review. The Tier Three gasfitting course shall be designed by 
segregating the educational standards that relate to natural or propane gasfitting and gas 
fitting regulations. 

(j) Education Experience for Applicants for Examination for Licensure as Undiluted 
Li quefied Petroleum Gas Installers Effective September 1 , 2008 . The 220 clock hour Board 
educational standard for undiluted liquefied petroleum examination applicants may be 
segregated into two-Tiers with modules or may be a single module. . 

1. Applicants for examination for licensure as undiluted liquefied petroleum gas 
installers shall successfully and satisfactorily complete 220 clock hours of undiluted 
liquefied petroleum gas installation educational theory. This educational theory 
requirement shall not be deemed to have been met if the educational theory hours are 
obtained in a course other than an undiluted liquefied petroleum gas program. 

2. The applicant shall demonstrate proficiency and competency in the discipline of 
undiluted liquefied petroleum gas installation by test review. 

3. Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Policy Standards. The undiluted liquefied petroleum gas 
installation course shall be designed by including the educational standards that relate to 
undiluted liquefied propane gasfitting and propane gas installation only. 

00 Specific Education Requirements for Gasfitting Programs . Each Tier shall include but 
shall not be limited to the following subjects: 

1 . The Board adopted most current edition of 248 CMR 3.00 through 1 1 .00; 

2. M.G.L. c. 142: Supervision of Plumbing; 

3. 248 CMR 3.00: General Provisions Governing the Conduct of Plumbing and Gas 
Work Performed in the Commonwealth. 

4. 248 CMR 4.00: Introduction and Massachusetts Modifications. 

5. 248 CMR 5.00: Amendments to 2002 Edition ofANSIZ223.i NFPA-54. 



7/13/07 248 CMR -271 



248 CMR: BOARD OF STATE EXAMINERS 
OF PLUMBERS AND GAS FITTERS 



11.06; continued 



6. 248 CMR 7.00; Massachusetts Code for Gas Utilization Equipment in Large 

Boilers. 
(1) Each Tier shall be administered and designed in compliance with the Board of 
Examiners Educational Policy Standards. Gasfitting courses shall be designed by segregating 
the educational standards that relate to natural or propane gasfitting and gas fitting 
regulations. 

1. All Public, Private, Proprietary or Occupational Trade School Program licensed by 
the Department of Education under M.G.L. c. 93, §§ 21A through 2IG,or other 
College/University or supplementary Institution of Education shall be approved by the 
Board or its designee and the Commissioner of Education annually. 

2. Apprentices may not advance from one Tier to another Tier until the clock hour 
requirement has been satisfied in the preceding Tier and the apprentice has successfully 
completed by test review the preceding Tier. 

3. Individuals who fail to complete a Tier in accordance with 248 CMR 1 1 .00 shall be 
required to fulfill the Tier completion requirements by attending make-up classes in the 
Tier that they have not completed. 

(m) The Board reserves the right to alter or amend in the exercise of its sole discretion the 
requirements of 248 CMR 1 1.00 relative to the educational standards to be administered by 
the Private Proprietary Occupational Trade School Program licensed by the Department of 
Education under M.G.L. c. 93, §§ 21A through 210 or other College/University or 
supplementary Institution of Education approved by the Board and the Commissioner of 
Education. 

(n) All educational programs shall make every effort to follow the educational standards and 
guidelines for course hours, subject hours and course content as shall be published by the 
Board of Examiners of Plumbers and Gasfitters, 



REGULATORY AUTHORITY 

248 CMR 11.00: M.G.L. c. 112. §§ 61 through 65B; c. 142, §§ 1 through 21. 



7/13/07 248 CMR - 272