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Full text of "Commonwealth of Massachusetts state building code"

BOSTON PUBLIC LIBRARY 



3 9999 03290 947 3 






WARNING!! 

This edition (6 th , updated to 19 Sept. 1997) of the Massachusetts 
State Building Code was bound incorrectly. 

First comes the User's Guide (30p.) which is correct. The next 

section are the amendments and then the final section is the text of 

the Building Code itself. 

Each section has been marked. To use effectively start by looking 

in the last section which is the Building Code (6* Edition, updated 

to 19 Sept. 1997) and then check the amendments (updated to 12 

Dec. 1997) in the second section to see if there have been any 

changes. 



Sorry for the confusion! 



AMENDMENTS to this ed. (to 12-12-97) 




DOCUMENTS DEPT. 
BUbluw rJBLIC LIBRARY 
700 Boylston Street 
Boston, MA 02117 



The Commonwealth of Massachusetts 

William Francis Galvin, Secretary of the Commonwealth 
State Publications and Regulations 

REGULATION FILING AND PUBLICATION 

1. Regulation Chapter, Number and Heading: 780 CM R AMENDMENT 



2. Name of Agency: 



STATE BOARD OF BUILDING REGULATIONS 
AND STANDARDS 



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



STATE BUILDING CODE 

AMENDMENTS AS OF 10/31/97 (780 CMR R3) 
AMENDMENTS AS OF 12/12/97 



Under the provisions of Massachusetts General Laws, Chapter 30A, Section 6 and Chapter 233, Section 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. 



08/28/97 (AMENDED 12/12/97) 

A true copy attest: 



$5.00 



true copy attest: A 



WILLIAM FRANCIS GALVIN 



Digitized by the Internet Archive 

in 2010 with funding from 

Boston Public Library 



http://www.archive.org/details/commonwealthofma61997mass 




The Commonwealth of Massachusetts 

William Francis Galvin, Secretary of the Commonwealth 
State Publications and Regulations 

REGULATION FILING AND PUBLICATION 



1. Regulation Chapter, Number and Heading: 780 CMR 

The Massachusetts State Building Code 

2. Name of Agency: . ^ 

State Board of Building Regulations and Standards 

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



This is the Sixth Edition of the Massachusetts State Building Code as 
adopted by the State Board of Building Regulations and Standards and 
filed with the Office of the Secretary of the Commonwealth. 



Under the provisions of Massachusetts General Laws, Chapter 30A, Section 6 and Chapter 233, Section 
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: 8/28/97 (Amended 1 2/1 2/97) 



A true copy attests— , / 



WILLIAM FRANCIS GALVIN 
$30.00 Secretary of the Commonwealth 



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121 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ADMINISTRATION 

column 4 of Table 106. For example, if the building official issues a certificate valid for two years for a building in 

the R-2 use group, the fee charged would be 2/5 times the fee per maximum certification period as determined for the 

building in question using the formula in Note f. 

Note a. For buildings or structures, or parts thereof, in the A-3 Use Group categories, with capacities over 400, the 

fee to be charged for the maximum certification period of one year is $75 for accommodations for up to 5,000 persons, 

plus $15 for the accommodations for each additional 1,000 persons or fraction thereof. 

Note b. For all buildings or structures, or parts thereof, in A-5 use group, the fee to be charged for the maximum 

certification period of one year is $40 for seating accommodations for up to 5,000 persons, plus $8 for the 

accommodation for each additional 1,000 persons or fraction thereof 

Note c. For all buildings and structures, or parts thereof, in the 1-3 use group, the fee to be charged for the maximum 

certification period of two years is $75 for each structure containing up to 100 beds, plus a $2 charge for each 

additional ten beds or fraction thereof over the initial 1 00 beds. 

Note d. For hospitals, nursing homes, sanitariums, and orphanages in the 1-2 use group, the fee to be charged for the 

maximum certification period of two years is $75 for each structure containing up to 100 beds, plus a $2 charge for 

each additional ten beds or fraction thereof over the initial 100 beds. All other buildings or structures or parts thereof 

in the 1-2 use group classification shall be charged a fee of $75 for a two year maximum certification period. 

Note e. For all buildings and structures or parts thereof in the R-l use group, the fee to be charged for the maximum 

certification period of one year shall be $40 for up to five units plus $2 per unit for all over five units. A unit shall be 

defined as follows: 

two hotel guest rooms; 

two lodging house guest rooms; 

two boarding house guest rooms; or 

four dormitory beds 
Note f. For all buildings and structures or parts thereof in the R-2 use group, the fee to be charged for the maximum 
certification period of five years shall be $75, plus $2 per dwelling unit 

Note g. For purposes of determining the required number of inspections, the maximum certification period, and the 
fees, as specified in Table 106, dormitories are included in the R-l use group classification rather than the R-2. 
Note h. Summer camps for children in use group R-2 shall be inspected and certified annually prior to the beginning 
of each season. The annual fee shall be $ 15 for the first 25 residential units: $8 for each additional 25 residential units; 
and $ 15 for each assembly building or use. (A residential unit for this purpose shall be defined as four beds). 



106.6 Reports by the Building Official 

106.6.1 Report to Appointing Authority: The 

building official shall submit to the appointing 
authority of the jurisdiction a written report of 
operations in a form and content and at intervals 
as shall be prescribed by the appointing authority. 

106.6.2 Report to assessors: Pursuant to 
M.G.L. c. 143, § 61, the building official shall 
give to the assessors of the municipality written 
notice of the granting of permits for the 
construction of any buildings or structures, or for 
the removal or demolition, or for any substantial 
alteration or addition thereto. Such notice shall be 
given within seven days after the granting of each 
permit, and shall state the name of the person to 
whom the permit was granted and the location of 
the building or structure to be constructed, 
reconstructed, altered, demolished or removed. 

106.6.3 Report to Local United States 
Postmaster Pursuant to M.G.L. c. 143, § 3X the 
building official shall notify the local United 
States Postmaster of the issuance of a building 
permit authorizing the construction of any 
building containing ten or more residential units. 

106.7 Department records: The building official 
shall maintain official records of applications 
received, permits and certificates issued, inspections 
performed fees collected, reports of inspections, and 
notices and orders issued. Such records shall be 



retained in the official records as long as the 
building or structure to which they relate remains in 
existence unless otherwise provided for by law. 

780 CMR 107.0 DUTIES AND POWERS OF 
THE STATE INSPECTOR 

(M.GJLc.l43,§3A) 

107.1 The State Inspector: In every city and town 
780 CMR shall be enforced by the State Inspector of 
the Department of Public Safety, Division of 
Inspections, as to any structures or buildings or parts 
thereof that are owned by the Commonwealth or any 
departments, commissions, agencies, or authorities 
of the Commonwealth. The state inspector shall 
have as to such buildings and structures all the 
powers of a building commissioner or inspector of 
buildings. All buildings and structures owned by 
any authority established by the legislature and not 
owned by the Commonwealth shall be regulated in 
accordance with 780 CMR 106.0. 

107.2 Other responsibilities: The state inspector 
shall make periodic reviews of all local building 
inspection practices, provide technical assistance 
and advice to the local building officials in the 
implementation of 780 CMR and report in writing 
his findings to the building officials. 

107.3 Review by the Commissioner of Public 
Safety: The Commissioner of the Commonwealth 
of Massachusetts, Department of Public Safety shall 
establish districts which shall be supervised by a 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



17 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



state inspector of the Division of Inspections. The 
Commissioner may review, on his own initiative, or 
on the application of any state inspector, any action 
or refusal or failure of action by any building official 
the result of which does not comply with the 
uniform implementation of 780 CMR; and may 
reverse, modify or annul, in whole or in part, such 
action except with respect to the specialized codes, 
provided that an order or action of the Commissioner 
shall not reverse, modify, annul, or contravene any 
order, action, determination, interpretation or any 
decision by the BBRS or the State Building Code 
Appeals Board. 

107.4 Reports: The state inspector shall file with 
the BBRS reports of his periodic reviews and 
recommendations for improvements of building 
inspection practices. The format and due dates for 
these reports shall be determined by the BBRS. 

780 CMR 108.0 RULES AND REGULATIONS 

108.1 Rule making authority: Under authority 
granted by St 1984, c. 348, as amended, the BBRS 
is empowered in the interest of public safety, health 
and general welfare, to adopt and promulgate rules 
and regulations, and to interpret and implement the 
provisions of 780 CMR to secure the intent thereof. 

108.2 Amendments and promulgation of rules: 

In accordance with the provisions of M.G.L. c. 143, 
§ 97, any person may propose amendments to 
780 CMR. Public hearings shall be held in the city 
of Boston in May and November of each year, and 
at such other times and places as the BBRS may 
determine, to consider petitions for such 
amendments. Amendments adopted by the BBRS 
shall be binding and have the full force and effect in 
all cities and towns. 

1083 Activities requiring licenses, registration or 
certification: 

108.3.1 Testing laboratories: A testing 
laboratory, branch laboratory and/or project 
laboratory shall not test concrete and/or concrete 
materials for use in structures subject to 
construction control (780 CMR 116.0) and/or 
controlled materials (780 CMR 17) unless 
licensed by the BBRS in accordance with 
780 CMR and 780 CMR Rl: the Rules and 
Regulations for Licensing of Concrete Testing 
Laboratories. 

1083.2 Field technicians: A person shall not 
engage in the activities of field testing of concrete 
for use in structures subject to construction 
control (780 CMR 116.0) and/or controlled 
materials (780 CMR 17) unless such person is 
licensed by the BBRS in accordance with 



780 CMR R2: the Rules and Regulations for 
Concrete Testing Personnel. 

10833 Manufactured buildings: No individual, 
organization or firm shall be engaged in the 
construction of manufactured buildings for use in 
the Commonwealth of Massachusetts unless 
approved to construct same by the BBRS in 
accordance with 780 CMR R3. 

1083.4 Native Lumber: No individual, 
organization or firm shall engage in the 
production of native lumber for use in structures 
within the Commonwealth of Massachusetts 
unless registered by the BBRS in accordance with 
780 CMR and 780 CMR R4: the Rules and 
Regulations Controlling the Use of Native 
Lumber. 

1083.5 Licensing of Construction Supervisors: 

1083.5.1 Except for those structures governed 
by Construction Control in 780 CMR 116.0, 
effective July 1, 1982, no individual shall be 
engaged in directly supervising persons 
engaged in construction, reconstruction, 
alteration, repair, removal or demolition 
involving any activity regulated by any 
provision of 780 CMR, unless said individual 
is licensed in accordance the Rules and 
Regulations for Licensing Construction 
Supervisors as set forth in 780 CMR R5. 

No person shall be engaged in the 
supervision of the field erection of a 
manufactured building unless such person is 
licensed in accordance with 780 CMR R5: The 
Rules and Regulations for the Licensing of 
Construction Supervisors. 

Exception: Any Home Owner performing 
work for which a building permit is required 
shall be exempt from the licensing 
provisions of 780 CMR 108.3.5; provided 
that if a Home Owner engages a person(s) 
for hire to do such work, that such Home 
Owner shall act as supervisor. This 
exception shall not apply to the field 
erection of a manufactured buildings 
constructed pursuant to 780 CMR 35 and 
780 CMR R3. For the purposes of 
780 CMR 108.3.5, a "Homeowner" is 
defined as follows: Person(s) who owns a 
parcel of land on which he/she resides or 
intends to reside, on which there is, or is 
intended to be, a one or two family dwelling, 
attached or detached structures accessory to 
such use and/or farm structures. A person 
who constructs more than one home in a 
two-year period shall not be considered a 
home owner. 



18 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ADMINISTRATION 



1083.5.2 Exemptions from Construction 
Supervisor License requirement; A 

construction supervisor's license is not 
required for: roofing, siding, erection of 
rooftop solar collectors, construction of 
swimming pools, the erection of signs, 
installation of replacement windows not 
involving structural modifications, the erection 



of tents nor for projects which are subject to 
construction control (780 CMR 1 16.0). 

A construction supervisor's license is not 
required for agricultural buildings which are 
not open to the public or otherwise made 
available for public use. 
1083.53 No municipality shall be prohibited 
from requiring a license for those individuals 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



18.1 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

NON-TEXT PAGE 



,8 - 2 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ADMINISTRATION 



engaged in directly supervising persons 
engaged in construction, reconstruction, 
alteration, repair, removal or demolition in 
those categories of building and structures for 
which the BBRS does not require a license, 
provided that those municipalities which have 
established licensing requirements for 
construction supervisors prior to January 1, 
1975, may maintain their existing licensing 
requirements. 

108.3.6 Registration of Home Improvement 
Contractors: In accordance with the provisions 
of M.G.L. c. 142 A no home improvement 
contractor, or organization or firm shall be 
involved in the improvement of any existing 
owner occupied one to four family residential 
building unless said home improvement 
contractor has registered with the BBRS in 
accordance with the rules and regulations for the 
registration of Home Improvement Contractors as 
set forth in 780 CMR R6. 

108.3.7 Certification of Inspectors of Buildings, 
Building Commissioners and Local Inspectors; 

The rules and regulations for the Certification of 
Inspectors of Buildings, Building Commissioners 
and Local Inspectors shall be as set forth in 
780 CMR R7. 

108.4 Enforcement: Whoever violates the 
provisions of 780 CMR 108.0 or any rules and 
regulations promulgated hereunder, or who falsifies 
or counterfeits a license, registration or certification 
issued by the BBRS, or who fraudulently issues or 
accepts such a license, registration or certification 
shall be punished as provided in 780 CMR 1 18.0 or 
shall be subject to any other penalty provided for by 
law. 

780 CMR 109.0 APPROVAL 

109.1 Approved materials and equipment: All 

materials, equipment and devices approved by the 
building official shall be constructed and installed in 
accordance with such approval. 

109.2 Used materials and equipment: Used 
materials, equipment and devices which meet the 
minimum requirements of 780 CMR for new 
materials, equipment and devices shall be permitted; 
however, the building official may require 
satisfactory proof that such materials, equipment and 
devices have been reconditioned, tested, and/or 
placed in good and proper working condition prior 
to approval. 

109.3 Alternative materials and equipment: 

109.3.1 General: The provisions of 780 CMR 
are not intended to limit the appropriate use or 
installation of materials, appliances, equipment or 
methods of design or construction not specifically 



prescribed by 780 CMR, provided that any such 
alternative has been approved. Alternative 
materials, appliances, equipment or methods of 
design or construction shall be approved when the 
building official is provided acceptable proof and 
has determined that said alternative is satisfactory 
and complies with the intent of the provisions of 
780 CMR, and that said alternative is, for the 
purpose intended, at least the equivalent of that 
prescribed in 780 CMR in quality, strength, 
effectiveness, fire resistance, durability and 
safety. Compliance with specific performance 
based provisions of 780 CMR, in lieu of a 
prescriptive requirement shall also be permitted as 
an alternate. 

109.3.2 Evidence submitted: The building 
official may require that evidence or proof be 
submitted to substantiate any claims that may be 
made regarding the proposed alternate. 

109.33 Tests: Determination of acceptance shall 
be based on design or test methods or other such 
standards approved by the BBRS. In the 
alternative, where the BBRS has not provided 
specific approvals, the building official may 
accept, as supporting data to assist in this 
determination, duly authenticated engineering 
reports, formal reports from nationally 
acknowledged testing/ listing laboratories, reports 
from other accredited sources. The costs of all 
tests, reports and investigations required under 
these provisions shall be bome by the applicant. 

109.3.4 Approval by the Construction 
Materials Safety Board: The building official 
may refer such matters to the Construction 
Materials Safety Board in accordance with 
780 CMR 123.0 for approval. 

780 CMR 1 10.0 APPLICATION FOR PERMIT 

110.1 Permit application: It shall be unlawful to 
construct, reconstruct, alter, repair, remove or 
demolish a building or structure; or to change the 
use or occupancy of a building or structure; or to 
install or alter any equipment for which provision is 
made or the installation of which is regulated by 
780 CMR without first filing a written application 
with the building official and obtaining the required 
permit therefor. 

110.2 Temporary Structures: 

110.2.1 General: A building permit shall be 
required for temporary structures, unless 
exempted by 780 CMR 1 10.3. Such permits shall 
be limited as to time of service, but such 
temporary construction shall not be permitted for 
more than one year. 

110.2.2 Special approval: All temporary 
construction shall conform to the structural 
strength, fire safety, means of egress, light, 



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780 CMR - Sixth Edition 



19 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



ventilation, energy conservation and sanitary 
requirements of 780 CMR as necessary to insure 
the public health, safety and general welfare. 

110 2.3 Termination of approval: The building 
official may terminate such special approval and 
order the demolition of any such construction at 
the discretion of the building official. 

1103 Exemptions: A building permit is not 
required for the following activities, such exemption, 
however, shall not exempt the activity from any 
review or permit which may be required pursuant to 
other laws, by-laws, rules and regulations of other 
jurisdictions (e.g. zoning, conservation, etc.). 

1 . One story detached accessory buildings used 
as tool or storage sheds, playhouses and similar 
uses, provided the floor area does not exceed 120 
square feet. 

2. Fences six feet in height or less. 

3 . Retaining walls which, in the opinion of the 
building official, are not a threat to the public 
safety health or welfare and which retain less than 
four feet of unbalanced fill. 

4. Ordinary repairs as defined in 780 CMR 2. 
Ordinary repairs shall not include the cutting 
away of any wall, partition or portion thereof, the 
removal or cutting of any structural beam, column 
or other loadbearing support, or the removal or 
change of any required means of egress, or 
rearrangement of parts of a structure affecting the 
egress requirements; nor shall ordinary repairs 
include addition to, alteration of, replacement or 
relocation of any standpipe, water supply, 
mechanical system, fire protection system, energy 
conservation system or other work affecting 
public health or general safety. 

5. Greenhouses: A building permit or notice to 
the building official is not required for the 
construction of greenhouses covered exclusively 
with plastic film (in accordance with St. 1983, 
c. 671). (This exemption does not apply if the 
greenhouse is to be used for large assemblies of 
people or uses other than normally expected for 
this purpose.) 

110.4 Form of application: The application for a 
permit shall be submitted in such form as determined 
by the building official but in all cases shall contain, 
as a minimum, the information required on the 
appropriate sample uniform building permit 
application forms in Appendix B. The application 
for a permit shall be accompanied by the required 
fee as prescribed in 780 CMR 114.0 and the 
construction documents as required in 780 CMR 
1 10.7 and 1 10.8, where applicable and as required 
by other sections of 780 CMR. 

110.5 By whom application is made: Application 
for a permit shall be made by the owner or lessee of 
the building or structure, or agent of either. If 
application is made other than by the owner, the 



written authorization of the owner shall accompany 
the application. Such written authorization shall be 
signed by the owner and shall include a statement of 
ownership and shall identify the owner's authorized 
agent, or shall grant permission to the lessee to apply 
for the permit. The full names and addresses of the 
owner, lessee, applicant and the responsible officers, 
if the owner or lessee is a corporate body, shall be 
stated in the application. 

Note: It shall be the responsibility of the 
registered contractor to obtain all permits 
necessary for work covered by the Home 
Improvement Contractor Registration Law, 
M.G.L. c. 142A. An owner who secures his or 
her own permits for such shall be excluded from 
the guaranty fund provisions as defined in M.G.L. 
c. 142A. Refer to 780 CMR R6 and M.G.L. 
c. 142A for additional information regarding the 
Home Improvement Contractor Registration 
Program. 

110.6 The securing of a building permit by the 
owner, or the owner's authorized agent, to construct, 
reconstruct, alter, repair, demolish, remove, install 
equipment or change the use or occupancy of a 
building or structure, shall not be construed to 
relieve or otherwise limit the duties and responsibil- 
ities of the licensed, registered or certified individual 
or firm under the rules and regulations governing the 
issuance of such license registration or certification. 

110.7 Construction documents: The application for 
permit shall be accompanied by not less than three 
sets of construction documents. The building 
official is permitted to waive, or modify the 
requirements for filing construction documents when 
the building official determines that the scope of the 
work is of a minor nature. When the quality of the 
materials is essential for conformity to 780 CMR, 
specific information shall be given to establish such 
quality, and 780 CMR shall not be cited, or the term 
"legal" or its equivalent used as a substitute for 
specific information. 

110.8 Engineering Details, Reports, Calculations, 
Plans and Specifications: In the application for a 
permit for buildings and structures subject to 
construction control in 780 CMR 116.0, the 
construction documents shall contain sufficient plans 
and details to fully describe the work intended, 
including, but not limited to all details sufficient to 
describe the structural, fire protection, fire alarm, 
mechanical, light and ventilation, energy 
conservation, architectural access and egress 
systems. The building official may require such 
calculations, descriptions narratives and reports 
deemed necessary to fully describe the basis of 
design for each system regulated by 780 CMR. In 
accordance with the provisions of M.G.L. c. 143, 
§ 54A all plans and specifications shall bear the 
original seal and original signature of a 



20 



780 CMR - Sixth Edition 



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.DING REGULATIONS AND STAT JRDS 

DEFINITIONS 



release characteristics, where the top storage 
is greater than six feet in height 

Buttress: See 780 CMR 2102.0. 

Cellar: that portion of a building which is partly 
or completely below grade and having at least Vi 
its height below grade. 

Cementitious material: See 780 CMR 1902.0. 

Central Station, Central Station Fire Alarm Systen 
and Central Station Services: See NFPA 72, as 
listed in Appendiz A. 

Certificate of approval: A written document from 
the appropriate code official approving an 
action, type of material, and the like. 

Certificate of use and occupancy: The certificate 
issued by the code official which permits the use 
of a building in accordance with the approved 
plans and specifications which certifies 
compliance with provisions of law for the use 
and occupancy of the building in its several parts 
together with any special stipulations or 
conditions of the building permit 

Certification: Any manufactured building or 
building component that meets the provisions of 
780 CMR 35 and the rules and regulations 
pursuant thereto and which has been labeled 
accordingly. See also 780 CMR R7 for the 
certification of Building Code Enforcement 
Officials 

Change of use: An alteration by change of use in 
a building heretofore existing to a new use group 
which imposes other special provisions of law 
governing building construction, equipment or 
means of egress. 

Child day care center: Any facility operated on a 
regular basis whether known as a day nursery, 
nursery school, kindergarten, child play school, 
progressive school child development center, or 
preschool, or known under any other name, 
which receives children not of common 
parentage under seven years of age or under 16 
years of age if such children have special needs 
for non-residential custody and care during part 
or all of the day separated from their parents. 
Child day care centers shall not include: any 
part of a public school system; any part of a 
private, organized educational system unless the 
services of such a system are primarily limited to 
a kindergarten, nursery or related preschool 
services; a Sunday school conducted by a 
religious institution; a facility operated by 
religious organization where children are cared 
for during short periods of time while persons 



responsible for such children are attending 
religious services; a family day care home, as 
defined by M.G.L. c. 28 A, § 9; an informal 
cooperative arrangement among neighbors or 
relatives; or the occasional care of children with 
or without compensation therefor. 

Chimney: See 780 CMR 2102.0. 

Chimney, masonry: See 780 CMR 2102.0. 

Closed system: See 780 CMR 307.2. 

CMR: Code of Massachusetts Regulations; 
Appendix A contains a listing of various CMR's 
for Massachusetts specialized codes. 

Code official: See "Building Code Enforcement 
Official". 

Combination of municipalities: Any two or more 
cities and/or towns who have agreed to combine 
in order to share costs necessary for the 
administration and enforcement of 780 CMR in 
said cities and/or towns. 

CoUar joint: See 780 CMR 2102.0. 

Combustible dusts: See 780 CMR 307.2. 

Combustible fibers: See 780 CMR 307.2. 

Combustible liquids: See 780 CMR 307.2. 

Combustible material: A combustible material is a 
material which cannot be classified as non- 
combustible in accordance with 780 CMR 
704.4.1.1. 

Compliance assurance program: The system, 
documentation and methods for assuring that 
manufactured buildings, building components, 
building systems and manufactured homes, 
including their manufacture, storage transporta- 
tion and assembly, and handling and installa- 
tion, conform with 780 CMR 35 and the rules 
and regulations promulgated pursuant thereto. 

Common path of travel: See 780 CMR 1002.0. 

Compressed gas: See 780 CMR 307.2. 

Concrete: See 780 CMR 1902.0. 

Concrete, reinforced: See 780 CMR 1902.0. 

Connector: See 780 CMR 2102.0. 

Construction documents: All of the written, 
graphic and pictorial documents prepared or 
assembled for describing the design, location and 



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37 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



physical characteristics of the elements of the 
project necessary for obtaining a building permit. 
The construction drawings shall be drawn to an 
appropriate scale. 

Construction, type of: See 780 CMR 602.0. 
Type 1: See 780 CMR 603.0. 
Type 2: See 780 CMR 603.0. 
Type 3: See 780 CMR 604.0. 
Type 4: See 780 CMR 605.0. 
Type 5: See 780 CMR 606.0 

Control area: See 780 CMR 307.2. 

Corridor: See 780 CMR 1002.0. 

Corrosive: See 780 CMR 307.2. 

Court: See 780 CMR 1202.0. 
Inner: See 780 CMR 1202.0. 
Outer: See 780 CMR 1202.0. 

Court width: See 780 CMR 1202.0. 

Cryogenic liquids (flammable or oxidizing): See 

780 CMR 307.2. 

Curb level: See 780 CMR 3203.2. 
Building or wall height: See 780 CMR 3203.2. 

Damper, fire: See 780 CMR 702.0. 

Day care center (child): See "Child day care 
center". 

Deflagration: See 780 CMR 307.2. 

Deluge system: See 780 CMR 902.0. 

Department- (DPS): The Department of Public 
Safety, Division of Inspection. 

Design earthquake: See 780 CMR 1612.3. 

Designated seismic systems: See 780 CMR 1612.3. 

Detached storage building: See 780 CMR 307.2. 

Detector, heat: See 780 CMR 902.0. 

Detector, smoke: See 780 CMR 902.0. 

Detonation: See 780 CMR 307.2. 



of Massachusetts, and shall be used to treat 
individuals acceptable to the program in 
accordance with 1 05 CMR 1 60. 000. 

Diaphragm: See 780 CMR 1612.3, 2102.0 and 
2306.2. 

Dimensions, nominal: See 780 CMR 2102.0. 

Dispensing: See 780 CMR 307.2. 

Door assembly, fire: See 780 CMR 702.0. 

Door, fire: See 780 CMR 702.0. 

DPS: See "Department". 

Draftstopping: See 780 CMR 702.0. 

Dumbwaiter: See 780 CMR 30. 

Dwellings 

Boarding house: See 780 CMR 310.2. 

Dormitory: See 780 CMR 310.2. 

Dwelling unit: See 780 CMR 310.2. 

Hotel: See 780 CMR 3 10.2. 

Motel: See 780 CMR 310.2. 

Multiple-family dwelling: See 780 CMR 3 10.2. 

Multiple single-family dwelling: See 780 CMR 

310.2. 

One-family dwelling: See 780 CMR 310.2. 

Two-family dwelling: See 780 CMR 310.2. 

Effective height: See 780 CMR 2102.0. 

Elevator: 780 CMR 30 and 524 CMR. 
Freight elevator: See 524 CMR 17.00 
Hand elevator: See 524 CMR 18.00 
Hydraulic elevator: See 524CMR 
Passenger elevator: See 524CMR 17.00 
Power elevator: See 524CMR. 
Sidewalk elevator: See 524CMR 20.00 

Elevator repairs: 780 CMR 30 and 524 CMR. 

Emergency control station: See 780 CMR 416.2. 

Equipment, existing: Any equipment regulated by 
780 CMR which was legally installed prior to the 
effective date of 780 CMR, or for which a permit 
to install has been issued. 

Escalator: 780 CMR 30 and 524 CMR. 



Detoxification facility: A facility licensed or Exit: See 780 CMR 1002.0. 
operated by the Department of Public Health, 

Division of Alcoholism in accordance with Exit access: See 780 CMR 1002.0. 
105 CMR 160.000: Acute Care Inpatient 

Substance Abuse Detoxification Treatment Exit discharge: See 780 CMR 1002.0. 
Services issued by the Department of Public 
Health, Division of Alcoholism, Commonwealth Exit discharge, level of: See 780 CMR 1002.0 



38 



780 CMR - Sixth Edition corrected - 9/19/97 (Effective 2/28/97) 



780: CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

DEFINITIONS 



Dead load: See 780 CMR 1602.0. 
Duration of load: See 780 CMR 1602.0. 
Earthquake load: See 780 CMR 1602.0. 
Impact load: See 780 CMR 1602.0. 
Internal load: See 780 CMR 1602.0. 
Lateral soil load: See 780 CMR 1602.0. 
Live load: See 780 CMR 1602.0. 
Wind load: See 780 CMR 1602.0. 

Loadbearing wall system: See 780 CMR 1612.3. 

Local enforcement agency: A department or 
agency in a municipality charged with the 
enforcement of 780 CMR and appropriate 
specialized codes which include, but are not 
limited to, 248 CMR: The State Plumbing and 
Gas Fitting Code, and 527 CMR 12. 00: the State 
Electrical Code. 

Local inspector: A person in the municipality who 
assists the building commissioner or inspector of 
buildings in the performance of his or her duties 
and is charged with the enforcement of 
780 CMR All local inspectors shall meet or 
exceed the minimum qualifications defined by 
M.G.L. c 143, § 3 and shall be certified in 
accordance with 780 CMR R7. 

Lot: A portion or parcel of land considered as a unit. 

Lot, corner: A lot with two adjacent sides abutting 
upon streets or other public spaces. 

Lot, interior: A lot which faces on one street or with 
opposite sides on two streets. 

Lot line: A line dividing one lot from another, or 
from a street or any public place. 

Lot line, interior: Any lot line other than one 
adjoining a street or public space. 

Lot line, street: The lot line dividing a lot from a 
street or other public way. 

Main windforce-resisting system: See 780 CMR 

16. 



request of the manufacturer. 

Masonry: See 780 CMR 2102.0. 
Ashlar facing masonry: See 780 CMR 2102.0. 
Ashlar masonry: See 780 CMR 2102.0. 
Solid masonry: See 780 CMR 2102.0. 

Masonry unit 

Clay: See 780 CMR 2102.0. 
Concrete: See 780 CMR 2102.0. 
Hollow: See 780 CMR 2102.0. 
Solid: See 780 CMR 2102.0. 

Means of egress: See 780 CMR 1002.0. 

Member: 

Primary: See 780 CMR 1902.0. 
Secondary: See 780 CMR 1902.0. 

Membrane: See 780 CMR 3103.2. 

Membrane structures: 

Air-inflated structure: See 780 CMR 3103.2. 

Air-supported structure: See 780 CMR 3 103.2. 

Double skin: See 780 CMR 3 103.2. 

Single skin: See 780 CMR 3103.2. 

Cable-restrained, air-supported structure: See 

780 CMR 3 103.2. 

Membrane-covered cable structure: See 

780 CMR 3 103.2. 

Membrane-covered frame structure: See 

780 CMR 3103.2. 

Noncombustible membrane structure: See 

780 CMR 3 103.2. 

Tent: See 780 CMR 3103.2. 

Mezzanine: See 780 CMR 502.0. 

Mobile home: A structure transportable in one or 
more sections, which is eight body feet or more 
in width and is 32 body feet or more in length, 
and which is built on a permanent chassis, and 
designed to be used as a dwelling with 
permanent foundation, when connected to the 
required facilities, and includes the plumbing, 
heating, air-conditioning and electrical systems 
contained therein. 



Mall: See 780 CMR 402.2. 

Mall building, covered: See 780 CMR 402.2. 

Manufactured building: Any building which has 
concealed elements, such as electrical, 
mechanical, plumbing, fire protection, 
insulation and other systems affecting health 
and safety, and which is manufactured and 
assembled in manufacturing facilities, on or off 
the building site. Also, any building as defined 
above which does not have concealed elements, 
but which has been approved by the BBRS at the 



Mortar: See 780 CMR 2102.0. 

Mortar, surface-bonding: See 780 CMR 2102.0. 

Moving walk: See 780 CMR 30. 

Native lumber: Native lumber is wood processed in 
the Commonwealth of Massachusetts by a mill 
registered in accordance with 780 CMR R4. 
Such wood is ungraded but is stamped or 
certified in accordance with the requirements of 
780 CMR R4. For the purpose of this definition, 
native lumber shall be restricted to the use in 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



41 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



one- and two-story dwellings, barns, sheds, 
agricultural and accessory buildings and other 
structures when permitted by 780 CMR R4. 

Nominal dimension 

Lumber: See 780 CMR 2302.0. 

Noncombustible: This is a general, relative term. Its 
precise meaning is defined in 780 CMR for 
specific applications. 

Noncombustible building material: See 780 CMR 

704.4.1.1 

Occupancy: The purpose for which a building or 
portion thereof is used. 

Occupancy, change of: A change in the purpose or 
level of activity within a structure that involves a 
change in application of the requirements of 
780 CMR. 

Occupant load: See 780 CMR 1002.0. 

Occupiable space: See 780 CMR 1202.0. 

Occupied: As applied to a building, shall be 
construed as though followed by the words "or 
intended, arranged or designed to be occupied." 

Official Interpretation: A written interpretation of 
any provision of 780 CMR, or to its referenced 
standards listed in Appendix A, except 
specialized codes, made by the BBRS, under 
authority of M.G.L. c 143, § 94(e), or by the 
State Building Code Appeals Board under 
authority of M.G.L. c. 143, § 100. 

Open system: See 780 CMR 307.2. 

Organic peroxide: See 780 CMR 307.2. 

Oriel window: See 780 CMR 3203.2. 

Owner: Every person who alone or jointly or 
severally with others (a) has legal title to any 
building or structure; or (b) has care, charge, or 
control of any building or structure in any 
capacity including but not limited to agent, 
executor, executrix, administrator, administra- 
trix, trustee or guardian of the estate of the 
holder of legal title; or (c) lessee under a written 
letter agreement; or (d) mortgagee in possession; 
or (e) agent, trustee or other person appointed by 
the courts. Each such person is bound to comply 
with the provisions of 780 CMR. 

Oxidizer: See 780 CMR 307.2. 

P-Delta effect: See 780 CMR 1612.3. 



Panel (part of a structure): See 780 CMR 1602.0. 

Particleboard: See 780 CMR 2302.1. 

Penthouse: See 780 CMR 1502.1. 

Permit: An official document or certificate issued by 
the authority having jurisdiction which authorizes 
performance of a specified activity (see 780 CMR 
111.1). 

Person: Includes a corporation, firm, partnership, 
association, organization and any other group 
acting as a unit as well as individuals. It shall 
also include an executor, administrator, trustee, 
receiver or other representative appointed accord- 
ing to law. Whenever the word "person" is used in 
any section of 780 CMR prescribing a penalty or 
fine, as to partnerships or associations, the word 
shall include the partners or members thereof, and 
as to corporations, shall include the officer, agent 
or members thereof who are responsible for any 
violation of such section.. 

Physical hazard: See 780 CMR 307.2. 

Physically disabled person: See 780 CMR 11. 

Place of assembly: A room or space accommoda- 
ting 50 or more individuals for religious, recrea- 
tional, educational, political, social or amuse- 
ment purposes, or for the consumption of food 
or drink, including all connected rooms or space 
with a common means of egress and entrance. 

Place of outdoor assembly: Premises used or 
intended to be used for public gatherings of 200 
or more individuals in other than buildings. 

Plastic 
Light-diffusing system: See 780 CMR 2602.0. 
Plastic glazing: See 780 CMR 2602.0. 
Plastic roof panels: See 780 CMR 2602.0. 
Plastic wall panels: See 780 CMR 2602.0. 
Reinforced plastic, glass fiber: See 780 CMR 
2602.0. 

Thermoplastic material: See 780 CMR 2602.0. 
Thermosetting material: See 780 CMR 2602.0. 

Platform: See 780 CMR 412.2. 

Plenum: An enclosed portion of the building 
structure, so designed to allow the movement of air, 
that forms part of an air distribution system. See 
BOCA National Mechanical Code listed in 
Appendix A. 

Pools, swimming, hot tubs and spas 

Above-ground/on-ground pool: See 780 CMR 

421.2. 

Barrier: See 780 CMR 421.2. 



42 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780: CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

DEFINITIONS 
Roof covering: See 780 CMR 1502.0. 
Roof structure: See 780 CMR 1502.0. 



Hot tub: See 780 CMR 421.2. 
In-ground pool: See 780 CMR 421.2. 



Private swimming pool: See 780 CMR 421.2. 

Private swimming pool, indoor: See 780 CMR Rubble masonry: See 780 CMR 2102.0. 



421.2. 

Private swimming pool, outdoor: See 780 CMR 

421.2. 



Coursed rubble: See 780 CMR 2102.0. 
Random rubble: See 780 CMR 2102.0. 
Rough or ordinary rubble: See 780 CMR 

2102.0. 



Public swimming pool: 

Public outdoor inground swimming pool, Semi- Running bond: See 780 CMR 2 1 02.0 
public outdoor inground swimming pool: See 

780 CMR 421.2. 

Spa: See 780 CMR 421.2. 



Preaction system: See 780 CMR 902.0. 

Premises: A lot, plot or parcel of land, including any 
structure thereon. 



Seismic-resisting system: See 780 CMR 1612.3 
Self-closing: See 780 CMR 702.0. 
Sensitizer: See 780 CMR 307.2. 
Service passage, HPM: See 780 CMR 416.2. 



Preservative treatment (treated material): See Shaft: See 780 CMR 702.0. 
780 CMR 2302.0. 



Protected construction: See 780 CMR 702.0.. 

Public way: See 780 CMR 1002.0. 

Pyrophoric: See 780 CMR 307.2. 

Radioactive material: See 780 CMR 307.2. 

Registered design professional: An architect or 
engineer registered or licensed to practice 
professional architecture or engineering, as 
defined by the statutory requirements of the 
professional registration laws of the 
Commonwealth of Massachusetts. 



Shall: The term, where used in 780 CMR, shall be 
construed as mandatory. 

Shear wall: See 780 CMR 1612.3. 

Sign: See 780 CMR 3102.2. 

Closed sign: See 780 CMR 3102.2. 
Ground sign: See 780 CMR 3102.2. 
Marquee sign: See 780 CMR 3102.2. 
Open sign: See 780 CMR 3102.2. 
Portable sign: See 780 CMR 3102.2. 
Projecting sign: See 780 CMR 3102.2. 
Roof sign: See 780 CMR 3102.2. 
Temporary sign: See 780 CMR 3102.2. 
Wall sign: See 780 CMR 3102.2. 



Repair: The reconstruction or renewal of any part of Single membrane penetration: See 780 CMR 

an existing structure for the purpose of its 702.0. 

maintenance. 

Site: A parcel of land bounded by a lot line or a 
Repairs, ordinary: Any maintenance which does designated portion of a public right-of-way. 

not affect the structure, egress, fire protection 

systems, fire ratings, energy conservation Slidescape: See 780 CMR 1002.0. 

provisions, plumbing, sanitary, gas, electrical or 

other utilities. A building permit is not required Smoke barrier: See 780 CMR 702.0. 

for ordinary repairs. 

Smoke compartment: See 780 CMR 702.0.. 

Smoke detector, multiple station: See 780 CMR 

902.0. 

Smoke detector, single station: See 780 CMR 

902.0. 

Smokeproof enclosure: See 780 CMR 1002.0. 

Specialized code: All building codes, rules or 
regulations pertaining to building construction, 
reconstruction, alteration, repair or demolition 



Required: Shall be construed to be mandatory by 
provisions of 780 CMR. 

Resilient stable-mounting system: See 780 CMR 

1612.3. 

Restraining device: See 780 CMR 1612.3. 
Elastic: See 780 CMR 1612.3. 
Fixed: See 780 CMR 1612.3. 
Seismic activated: See 780 CMR 1612.3. 



Roof: See 780 CMR 1502.0. 
12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

promulgated by and under the authority of the HPM inside room: See 780 CMR 416.2. 

various agencies which have been authorized 

from time to time by the General Court of the Story: See 780 CMR 502.0. 
Commonwealth of Massachusetts. 



Sprinkler: See 780 CMR 902.0 

Sprinkler system, automatic: See 780 CMR 902.0. 

Sprinkler system, limited area: See 780 CMR 

902.0. 

Stack bond: See 780 CMR 2102.0. 

Stage: See 780 CMR 412.2. 

Stage, legitimate: See 780 CMR 412.2. 

Stage, regular: See 780 CMR 412.2. 

Stage, thrust: See 780 CMR 412.2. 

Stairway: See 780 CMR 1002.0. 

Standpipe system: See 780 CMR 902.0. 

State Building Code: The Massachusetts State 
Building Code and amendments and rules and 
regulations thereto as promulgated by the State 
Board of Building Regulations and Standards, 
under M.G.L. c 143 §§ 93 through 100. 



Story above grade: See 780 CMR 502.0. 

Story drift ratio: See 780 CMR 1612.3. 

Story shear: See 780 CMR 1612.3. 

Street: A public thoroughfare (such as a street, 
avenue or boulevard) which has been dedicated 
for public use. 

Structure: A combination of materials assembled at 
a fixed location to give support or shelter, such as 
a building, framework, retaining wall, tent, 
reviewing stand, platform, bin, fences over six 
feet high, sign, flagpole, recreational tramway, 
mast for radio antenna, or the like. The word 
"structure" shall be construed, where the context 
requires, as though followed by the words, "or 
part or parts thereof." 

Structure, existing: A structure erected prior to the 
date of adoption of the appropriate code or one for 
which a legal building permit has been issued. 
See 780 CMR 34 for further information 
regarding existing buildings. 

Supervisory device: See 780 CMR 902.0. 



State Inspector: An employee of the Division of Through-penetration protection system: See 
Inspection, State Department of Public Safety, 780 CMR 702.0. 

who is charged with administrating and 

enforcing 780 CMR relative to any structure or Tie, wall: See 780 CMR 2102.0. 
building or parts thereof that are owned by the 

Commonwealth or any departments, Tile: See 780 CMR 2102.0. 
commissions, agencies or authorities of the 

Commonwealth. The state inspector is also Tile, structural clay: See 780 CMR 2102.0. 
charged with supervising the enforcement of 

780 CMR relative to all buildings and structures Tires, bulk storage of: See 780 CMR 307.2. 
other than those owned by the Commonwealth. 



See also 780 CMR 107.0. 

Steel construction, cold-formed: See 780 CMR 

2202.0. 

Steel joist: See 780 CMR 2202.0. 
Steel member, structural: See 780 CMR 2202.0. 
Stone masonry: See 780 CMR 2102.0. 
Stone masonry, ashlar: See 780 CMR 2102.0. 
Stone masonry, rubble: See 780 CMR 2102.0. 

Storage room, HPM, separate inside: See 

780 CMR 416.2. 

HPM cutoff room: See 780 CMR 416.2. 



Travel Trailer: A vehicular, portable structure 
built on a chassis and designed to be used for 
temporary occupancy for travel, recreational or 
vocational use; with the manufacturer's 
permanent identification ~ "Travel Trailer," 
thereon; and when factory equipped for the 
road, being of any length provided its gross 
weight does not exceed 4500 pounds, or being of 
any weight provided its overall length does not 
exceed 28 feet 

Use group: The classification of an occupancy in 
accordance with 780 CMR 302. 1 . 

Vapor retarder: See 780 CMR 1202.0. 

Ventilation: See 780 CMR 1202.0. 



44 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780: CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

DEFINITIONS 



Vertical opening: See 780 CMR 702.0. 

Voice/alarm signaling system: See 780 CMR 
902.0. 

Wall 

Apron wall: See 780 CMR 1402.0. 
Cavity wall: See 780 CMR 2102.0. 
Composite wall: See 780 CMR 2102.0. 
Dry-stacked, surface-bonded walls: See 
780 CMR 2 102.0. 
Faced wall: See 780 CMR 2102.0. 
Fire separation wall: See 780 CMR 702.0. 
Fire wall: See 780 CMR 702.0. 
Foundation wall: See 780 CMR 1812.2. 
Hollow wall: See 780 CMR 2102.0. 
Loadbearing wall: See 780 CMR 1602.1. 
Nonloadbearing wall: See 780 CMR 1602.1. 
Parapet wall: See 780 CMR 2102.0. 
Party wall: See 780 CMR 702.0. 
Retaining wall: See 780 CMR 1812.2. 
Skeleton or panel wall: See 780 CMR 1402.0. 
Spandrel wall: See 780 CMR 1402.0. 
Veneered Wall: See 780 CMR 1402.0 

Water-reactive materials: See 780 CMR 307.2. 

Water supply, automatic: See 780 CMR 902.0. 



Winder: See 780 CMR 1002.0. 

Wood shear panel: See 780 CMR 2304.2. 

Writing (written): The term shall be construed to 
include hand-writing, typewriting, printing, photo 
offset or any other form of reproduction in legible 
symbols or characters. 



Written notice: A notification in writing delivered 
in person to the individual or parties intended; 
or delivered at, or sent by certified or registered 
mail to the last residential or business address of 
legal record. 

Wythe: See 780 CMR 2102.0. 

Yard: See 780 CMR 1202.0. 

Zoning: The reservation of certain specified areas 
within a community or city for buildings and 
structures, or use of land, for certain purposes 
with other limitations such as height, lot coverage 
and other stipulated requirements. (See M.G.L. 
c. 40A and St. 1956, c. 665, as amended.) 



1 2/ 1 2/97 (Effective 8/2 8/97) 



780 CMR - Sixth Edition 



45 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

NON-TEXT PAGE 



46 780 CMR - Sixth Edition 2/7/97 (Effective 2/28/97) 



CHAPTER 3 



USE OR OCCUPANCY 



780 CMR 301.0 GENERAL 

301.1 Scope: The provisions of 780 CMR 3 shall 
control the classification of all buildings and 
structures as to use group. 

301.2 Application of other laws: The provisions of 
780 CMR 3 shall not be deemed to nullify any 
provisions of the zoning law, ordinance of any 
municipality in the Commonwealth of 
Massachusetts, or any other statute of the 
jurisdiction pertaining to the location or occupancy 
of buildings, except as is specifically required by the 
provisions of 780 CMR 

780 CMR 302.0 CLASSIFICATION 
302.1 General: All structures shall be classified 
with respect to occupancy in one or more of the use 
groups listed below. Where a structure is proposed 
for a purpose which is not specifically provided for 
in 780 CMR such structure shall be classified in the 
use group which the occupancy most nearly 
resembles. 

1. Assembly: Use Groups A-l, A-2, 
(see 780 CMR 303.0) A-3, A-4 and A-5 

2. Business: Use Group B 
(see 780 CMR 304.0) 

3. Educational: Use Group E 

(see 780 CMR 305.0) 

4. Factory and Industrial: Use Groups F-l and F-2 

(see 780 CMR 306.0) 

5. High Hazard Use Groups H-l, H-2, 
(see 780 CMR 307.0): H-3 and H-4 

6. Institutional: Use Groups 1-1, 1-2 and 
(see 780 CMR 308.0) 1-3 

7. Mercantile: Use Group M 

(see 780 CMR 309.0) 

8. Residential: Use Groups R-l, R-2, R- 

(see 780 CMR 3 10.0) 3,R-4andi?-5 

9. Storage: Use Groups S-l and S-2 
(see 780 CMR 3 11.0) 

10. Utility and Miscellane- Use Group U 
ous (see 780 CMR 3 12.0) 

302.1.1 Specific occupancy areas: Specific 
occupancy areas which are incidental to the main 
use group shall be separated and protected in 
accordance with Table 302.1.1 and shall be 
classified in accordance with the main use group 
of the portion of the building in which the specific 
occupancy area is located. Where the building, or 
portion thereof, containing the specific occupancy 
area is required to be protected with an automatic 
fire suppression system, the separation alternative 
of Table 302.1.1 shall not apply. 

Exception: Specific occupancy areas within 
and serving a dwelling unit are not required to 



comply with 780 CMR 302. 1 . 1 . 

Table 302.1.1 
SPECIFIC OCCUPANCY AREAS 



Room or area 



Separation /protection 



AU use groups: 

Paint shops in occupancies oth- 
er than Use Group F employ- 
ing hazardous materials in 
quantities less than those which 
cause classification as Use 
Group H 

Waste and soiled linen collec- 
tion rooms and <hute term- 
ination rooms 
Waste and soiled linen chute 

access rooms 
Boiler and iumace rooms 



2 hours: or 1 hour and 
automatic fire sup- 
pression system 



1 hour and automatic fire 



1 hour 



Incinerator rooms 



Use Groups A. B. E. 1-1 , R-l , 
R-2: 

Storage rooms more than 50 
square feet in area but not 
more than 1 00 square feet in 
area 
Storage rooms more than 
100 square feet in area 

Physical plant maintenance 
shop and workshop 



Use Groups 1-2, 1-3: 
Boiler and furnace rooms 
Handicraft shops, kitchens, 
and employee locker rooms 

Laundries greater than 1 00 

square feet in area 
Storage rooms more than 50 

square feet in area bnt not 
.morethan WOsquarefeetin 

area 
Storage rooms more than 1 00 

square feet in area 
Physical plant maintenance 

shop and -workshop^ : 
Use Group 1-2: 

Gift/retail shops and laborator- 
ies employing hazardous 
quantities less than those which 
cause classification as Use 
Group H 

Use Group 1-3 padded cells 



1 hour; or automatic fire 

suppression system 

2 hours and automatic fire 

suppression system 

1 hour, or automatic fire 
suppression system 
with smoke partitions 



Automatic fire suppres- 
sion system with smoke 
partitions 
2 hours; or 1 hour and au- 
tomatic fire suppression 
system 

1 hour and automatic fire 
suppression system 

1 hour, or automatic fire 
suppression system with 
smoke, partitions 

I hour and automatic fire 
suppression system 

Automatic fire suppres- 
sion system with, smoke 
-'partitions' . 

Lhour and automatic fire 

suppression system 
1 hour and automatic fire 
; suppression system 

1 hour, or automatic fire 
suppression system with 
smoke partitions 



1 hour and automatic fire 

svstem 



Note a. For requirements for fireresistance rated 
separations and smoke partitions see 780 CMR 302. ! . ! . ! . 
Note b. 1 square foot = 0.093 m~ 



9/19/97 (Effective 2/2S/97) - corrected 780 CMR - Sixth Edition 



47 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



302.1.1.1 Separation: Where Table 302.1.1 
requires a fireresistance rated separation, the 
specific occupancy area shall be separated from 
the remainder of the building with fire 
separation assemblies (see 780 CMR 709.0). 
Where Table 302.1.1 requires smoke partitions, 
the smoke partitions shall be constructed of 
materials consistent with the type of 
construction and shall be capable of resisting 
the passage of smoke. The smoke partitions 
shall extend from the floor to the underside of 
the fireresistance rated floor/ceiling or 
roof/ceiling assembly or to the underside of the 
floor or roof deck above. All doors shall be self- 
closing or automatic-closing upon detection of 
smoke. 

302.1.2 Accessory areas: Except for accessory 

areas of Use Group H in accordance with 

780 CMR 302.1.2.1 and specific occupancy areas 

indicated in 780 CMR 302.1.1, where the area 

devoted to an accessory occupancy does not 

occupy more than 10% of say fire area nor more 

than 10% of the allowable area permitted by 

780 CMR 503.0 based on the accessory use group, 

a fire separation assembly shall not be required 

between the main use group and accessory areas. 

The required type of construction and the 

automatic fire suppression requirements in 

780 CMR 904.0 shall be based on the main use 

group of the fire area. 

302.1.2.1 High-hazard uses: In buildings that 

are three stories or less in height and equipped 

throughout with an automatic suppression 

system in accordance with 780 CMR 9, an 

occupancy in Use Group F or S is permitted to 

have accessory areas of Use Group H-2, H-3 or 

H-4, provided that such areas do not occupy 

more than 10% of any fire area nor more than 

10% of the allowable area permitted by 

780 CMR 503.0 based on the use group of the 

accessory area. Afire separation assembly shall 

not be required between the F or S use group 

and the accessory H use group. The maximum 

quantity of hazardous materials within the 

accessory H use group shall not exceed twice 

the permitted exempt amount specified in Table 

307.8(1) or Table 307.8(2). The required type of 

construction shall be based on the main use 

group of the fire area. 

302.2 Mixed use: All buildings and structures that 
include more than one use group shall be further 
designated as a mixed use and shall comply with 
780 CMR 313.0. Specific occupancy areas and 
accessory areas complying with 780 CMR 302.1.1 
and 302.1.2, respectively, shall be classified in 
accordance with the main use group. 



780 CMR 303.0 ASSEMBLY USE 
GROUPS 

303.1 General: All structures which are designed or 
occupied for the gathering together of persons for 
purposes such as civic, social or religious functions, 
recreation, food or drink consumption or awaiting 
transportation, shall be classified as Use Group A-l, 
A-2, A-3, A-4 or A-5. A room or space used for 
assembly purposes by less than 50 persons and 
which is accessory to another use group shall be 
included as a part of that main use group. Other 
buildings or structures which accomodate less than 
50 but would otherwise qualify as places of 
assembly, shall be classified in Use Group B. The 
term "Use Group A" shall include Use Groups A-l, 
A-2, A-3, A-4 and A-5. 

303.2 Use Group A-l, theaters: This use group 
shall include all theaters and all other buildings and 
structures intended for the production and viewing 
of performing arts or motion pictures; and which are 
usually provided with fixed seats-including theaters, 
motion picture theaters and television and radio 
studios admitting an audience. Stages and platforms 
shall comply with 780 CMR 412.0. 

3033 Use Group A-2 structures: This use group 
shall include all buildings and places of public 
assembly, without theatrical stage accessories, 
designed for occupancy as dance halls, nightclubs 
and for similar purposes, including all rooms, 
lobbies and other spaces connected thereto with a 
common means of egress and entrance. 

303.4 Use Group A-3 structures: This use group 
shall include all buildings with or without an 
auditorium in which persons assemble for 
amusement, entertainment or recreation purposes as 
well as incidental motion picture, dramatic or 
theatrical presentations, lectures or other similar 
purposes without theatrical stage other than a raised 
platform; and which are principally occupied 
without permanent seating facilities, including art 
galleries, exhibition halls, museums, lecture halls, 
libraries, restaurants other than nightclubs, and rec- 
reation centers; and buildings designed for similar 
assembly purposes, including passenger terminals. 

303.5 Use Group A-4 structures: This use group 
shall include all buildings and structures which are 
occupied exclusively for the purpose of worship or 
other religious services. 

303.6 Use Group A-5, outdoor assembly: This use 
group shall include structures utilized for outdoor 
assembly intended for participation in or reviewing 
activities, including grandstands (780 CMR 1013.0), 
bleachers (780 CMR 1013.0), coliseums, stadiums, 
amusement park structures (780 CMR 413.0) and 
fair or carnival structures. Such structures shall 
comply with all pertinent provisions of 780 CMR. 



48 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

USE OR OCCUPANCY 



780 CMR 304.0 BUSINESS USE GROUP 

304.1 General: All buildings and structures which 
are occupied for the transaction of business, for the 
rendering of professional services, or for other 
services that involve stocks of goods, wares or 
merchandise in limited quantities which are 
incidental to office occupancies or sample purposes, 
shall be classified as Use Group B. (Also see 
780 CMR 303.1.) 

304.2 List of business occupancies: The 

occupancies listed in Table 304.2 are indicative of 
and shall be classified as Use Group B. 

Table 304.2 
BUSINESS OCCUPANCIES 



Airport traffic control 

towers 

Animal hospitals, kennels, 

pounds 
Automobile and other 
motor vehicle showrooms 
Banks 

Barber shops 
Beauty shops 
Car wash 

Civic administration 
Clinic, outpatient 
Dry-cleaning; pickup and 

delivery stations and 

self-service 
Electronic data processing 



Fire stations 
Florists and nurseries 
Laboratories; testing and 

research 
Laundries; pickup and 

delivery stations and 

self-service 
Police stations 
Post offices 
Print shops 

Professional services; attor- 
ney, dentist, physician, 

engineer, etc. 
Radio and television 

stations 
Telecommunications 

equipment building 



780 CMR 305.0 EDUCATIONAL USE 
GROUP 

305.1 General: All structures other than those 
occupied for business training or vocational training, 
which accommodate more than five persons for 
educational purposes through the 12th grade, shall 
be classified as Use Group E. 

Exception: A room or space occupied for 
educational purposes by less than 50 persons, five 
years of age or more, and which is accessory to 
another use group shall be classified as a part of 
the main use group. 

305.1.1 Day care facilities: A child day care 
center which provides care for children more 
than two years nine months shall be classified as 
use Group E. 

305.2 Business or vocational training: Structures 
occupied for business training or vocational training 
shall be classified in the same use group as the 
business or vocation taught. 

780 CMR 306.0 FACTORY AND 
INDUSTRIAL USE GROUPS 
306.1 General: All structures in which occupants 
are engaged in work or labor in the fabricating, 
assembling or processing of products or materials, 
shall be classified as Use Group F-l or F-2. This 
includes, among others, factories, assembling plants, 



industrial laboratories and all other industrial and 
manufacturing occupancies. The term "Use Group 
F" shall include Use Groups F-l and F-2. 

306.2 Use Group F-l structures: Factory and 
industrial occupancies which are not otherwise 
classified as low-hazard, Use Group F-2, shall be 
classified as a moderate-hazard factory and 
industrial occupancy, Use Group F-l. The 
manufacturing processes listed in Table 306.2 are 
indicative of and shall be classified as Use Group F- 
1. 

Table 306.2 

MODERATE-HAZARD FACTORY AND 

INDUSTRIAL OCCUPANCIES 



Aircraft 

Appliances 

Athletic equipment 

Automobiles and other motor 
vehicles 

Bakeries 

Beverages, alcoholic 

Bicycles 

Boat building 

Boiler works 

Brooms or brushes 

Business machines 

Cameras and photo equipment 

Canneries, including food 
products 

Clothing 

Condensed and powdered 
milk manufacture 

Construction and agricultural 
machinery 

Disinfectants 

Dry cleaning using other than 
flammable liquids in clean- 
ing or dyeing operations or 
other than classified in 780 
CMR 307.0 

Electric light plants and 

power houses 

Electrolytic reducing works 

Electronics 

Engines, including rebuilding 



Film, photographic 

Food processing 

Furniture 

Hemp and jute products 

Laundries 

Leather and tanneries, ex- 
cluding enameling or 
japanning 

Machinery 

Millwork and woodworking, 
wood distillation 

Motion picture and television 
filming 

Musical instruments 

Optical goods 

Paper mills or products 

Plastic products 

Printing or publishing 

Recreational vehicles 

Refuse incinerators 

Shoes 

Soaps and detergents 

Sugar refineries 

Textile mills, including 
canvas, cotton, cloth, 
bagging, burlap, carpets 
and rags 

Tobacco 

Trailers 

Upholstery and manufacturing 
shops 



3063 Use Group F-2 structures: Factory and 
industrial occupancies which involve the fabrication 
or manufacturing of noncombustible materials that, 
during finishing, packing or processing, do not 
contribute to a significant fire hazard, shall be 
classified as Use Group F-2. The manufacturing 
processes listed in Table 306.3 are indicative of and 
shall be classified as Use Group F-2. 

Table 306.3 

LOW-HAZARD FACTORY AND 

INDUSTRIAL OCCUPANCIES 



Beverages, nonalcoholic 

Brick and masonry 

Ceramic products 

Foundries 

Glass products 



Gypsum 

Ice 

Metal fabrication and 

assembly 
Water pumping plants 



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49 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



780 CMR 307.0 HIGH-HAZARD USE 
GROUPS 

307.1 General: All structures which are occupied 
for the manufacturing, processing, generation, 
storage or other use of hazardous materials in 
excess of the exempt quantities specified in 
780 CMR 307.8 shall be classified as Use Group H- 
1, H-2, H-3 or H-4 in accordance with the hazards 
presented by each material as described in 780 CMR 
307.3 through 307.6. The term "Use Group H" shall 
include Use Groups H-l, H-2, H-3 and H-4. 

307.1.1 Information required: Separate floor 
plans shall be submitted for buildings and 
structures with an occupancy in Use Group H 
identifying the locations of anticipated contents 
and processes so as to reflect the nature of each 
occupied portion of every building and structure. 
A report identifying all hazardous materials 
including, but not limited to, materials of Use 
Group H to be stored or utilized, shall be 
submitted and the methods of protection from 
such hazards shall be indicated on the 
construction documents. 

307.2 Definitions: The following words and terms 
shall, for the purposes of 780 CMR 3 and as used 
elsewhere in 780 CMR, have the meanings shown 
herein. 

Aerosol: A product that is dispensed from an 
aerosol container by a propellant. 

Aerosol container: Metal cans, glass or plastic 
bottles designed to dispense an aerosol. Metal 
cans shall be limited to a maximum size of 33.8 
fluid ounces (1000 ml). Glass or plastic bottles 
shall be limited to a maximum size of four fluid 
ounces (118 ml). 

Barricade: A structure that consists of a 
combination of walls, floor and roof, which is 
designed to withstand the rapid release of energy 
in an explosion and which is fully confined, 
partially vented or fully vented; or other effective 
method of shielding from explosive materials by 
a natural or artificial barrier. 

Boiling point: The temperature at which the vapor 
pressure of a liquid equals the atmospheric 
pressure of 14.7 pounds per square inch (psia) or 
760 mm of mercury. Where an accurate boiling 
point is unavailable for the material in question, 
or for mixtures which do not have a constant 
boiling point, for the purposes of this 
classification, the 10% of a distillation performed 
in accordance with ASTM D86 listed in 
Appendix A shall be used as the boiling point of 
the liquid. 

Closed system: The use of a solid or liquid 



hazardous material in a closed vessel or system 
that remains closed during normal operations 
where vapors emitted by the product are not 
liberated outside of the vessel or system and the 
product is not exposed to the atmosphere during 
normal operations; and all uses of compressed 
gases. Examples of closed systems for solids and 
liquids include product conveyed through a piping 
system into a closed vessel, system or piece of 
equipment. 

Combustible dusts: Dusts and any similar solid 
material sufficiently comminuted for suspension 
in still air which, when so suspended, is capable 
of self-sustained combustion. 

Combustible fibers: Includes readily ignitable and 
free-burning fibers such as cotton, sisal, 
henequen, jute, hemp, tow, cocoa fiber, oakum, 
baled waste, baled wastepaper, kapok, hay, straw, 
excelsior, Spanish moss and other like material. 

Combustible liquids: Any liquids having a flash 
point at or above 100°F (38°C) shall be known as 
Class II or HI liquids. Combustible liquids shall 
be divided into the following classifications: 

Class II: Liquids having flash points at or above 
100°F (38°C) and below 140°F (60°C). 

Class niA: Liquids having flash points at or above 
140°F (60°C) and below 200°F (93 °C). 

Class D3B: Liquids having flashpoints at or above 
200°F(93°C). 

Compressed gas: A gas or mixture of gases as 
contained having an absolute pressure exceeding 
40 psi at 70 °F (276 kPa at 21°C) or, regardless of 
the pressure at 70 °F (21 °C), having an absolute 
pressure exceeding 140 psi at 130°F (965 kPa at 
54 C C); or any liquid material having a vapor 
pressure exceeding 40 psi absolute at 100°F (276 
kPa at 38 °C) as determined by ASTM D323 listed 
in Appendix A 

Control area: Spaces within a building which are 
enclosed and bounded by exterior walls, fire 
walls, fire separation assemblies and roofs, or a 
combination thereof, where quantities of 
hazardous materials not exceeding the exempt 
amounts are stored, dispensed, used or handled. 

Corrosive: A chemical that causes visible 
destruction of, or irreversible alterations in, living 
tissue at the point of contact. A chemical shall be 
considered a corrosive if, when tested on the 
intact skin of albino rabbits by the test method 
described by DOTn 49 CFR; Part 173 listed in 
Appendix A, such chemical destroys or changes 
irreversibly the structure of the tissue at the point 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



except if the panel or sign is vertical, the height 
shall not exceed 96 inches (2438 mm) and the 
width shall not exceed 36 inches (914 mm). 

402.143 Location: The panels and signs shall be 
located a minimum distance of 18 inches (457 
mm) from adjacent tenants. 

402.14.4 Encasement: All edges and the backs 
shall be fully encased in metal. 

402.15 Kiosks: Kiosks and similar structures 
(temporary or permanent) shall meet the 
requirements of 780 CMR 402.15.1 through 
402.15.4. 

402.15.1 Construction: Combustible kiosks or 
other structures shall not be located within the 
mall unless constructed of fireretardant-treated 
wood throughout conforming to 780 CMR 
2310.0. 

402.15.2 Fire suppression: Kiosks and similar 
structures that are covered and are located within 
the mall shall be protected by an automatic 
sprinkler system installed in accordance with 
780 CMR 9. 

402.153 Horizontal separation: The minimum 
horizontal separation between kiosks and other 
structures within the mall shall be 20 feet (6096 
mm). 

402.15.4 Maximum area: Kiosks or similar 
structures shall have a maximum area of 300 
square feet (27.90 m 2 ). 

402.16 Parking structures: An attached garage for 
the storage of passenger vehicles that have a 
capacity of not more than nine persons, or an open 
parking structure, shall be considered as a separate 
building where it is separated from the covered mall 
building by a fire separation assembly having a 
fireresistance rating of not less than two hours or 
shall be considered as part of the covered mall 
building. 

780 CMR 403.0 HIGH-RISE BUILDINGS 

403.1 Applicability: The provisions of 780 CMR 
403.0 shall apply to all buildings more than 70 feet 
in height above the mean grade. See M.G.L. c. 
148,§26A. 

Exception: The provisions of 780 CMR 403.0 
shall not apply to open parking structures (see 
780 CMR 406.0 and M.G.L. c. 148, § 26G). 

403.2 Sprinkler system: All buildings and 
structures shall be equipped throughout with an 



automatic sprinkler system in accordance with 
780 CMR 906.2.1 and M.G.L. c. 148, § 26A. 

Exception: An automatic sprinkler system shall 
not be required in spaces or areas of: 

1. Open parking structures complying with 
780 CMR 406.0. 

2. Telecommunications equipment buildings 
used exclusively for telecommunications 
equipment, associated electrical power 
distribution equipment, batteries and standby 
engines, provided that those spaces or areas are 
equipped throughout with an automatic fire 
detection system in accordance with 780 CMR 
918.0 and are separated from the remainder of the 
building with fire separation assemblies 
consisting of one-hour fireresistance rated walls 
and two-hour fireresistance rated floor/ceiling 
assemblies. 

4033 Alternative sprinkler system: Alternatively, 
to qualify for the fireresistance rating reduction for 
certain building elements listed in 780 CMR 403.3.3, 
the automatic sprinkler system shall comply with 
780 CMR 906.2.1 and the optional fire protection 
features listed in 780 CMR 403.3.1 and 403.3.2. 

4033.1 Control valves and water-flow devices: 

Sprinkler control valves equipped with 
supervisory initiating devices and water-flow 
initiating devices shall be provided for each floor. 

4033.2 Secondary water supply: In addition to 
the main water supply, for buildings located 
where the effective peak velocity-related 
acceleration (A v ) is equal to or greater than 0.20 in 
accordance with 780 CMR 1612.1, a secondary 
on-site water supply equal to the hydraulically 
calculated sprinkler design demand plus 100 
gallons per minute (0.0063 m 3 /s) shall be 
provided. This water supply shall have a duration 
of 30 minutes. 

40333 Automatic sprinkler system alternative: 

Where a complete automatic sprinkler system 

with additional system features listed in 780 CMR 

403.3.3.1 and 403.3.3.2 is installed throughout, 

modifications to this code are permitted as 

described in 780 CMR 403.3.3.1 and 403.3.3.2. 

40333.1 Type of construction: Other than in 

buildings with an occupancy in Use Groups F- 

1, H-3, M and S-l, the minimum type of 

construction required by 780 CMR shall be 

modified as indicated in Table 403.3.3.1. 

Exception: The Type 1A to IB 

modification shall be permitted for 

buildings with an occupancy in Use Groups 

F-l,MandS-l. 



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65 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 403.3.3.1 

TYPE OF CONSTRUCTION 

MODIFICATIONS PERMITTED FOR 

HIGH-RISE BUILDINGS 



Type of Construction set 
' forth in Table 602 


Modified type of construction 
permitted hereunder 


1A 
IB 

2A 


IB 
2A a 
2B 



Note a. The minimum fireresistance rating floor 
construction shall be two hours. 

403.3.3.2 Shaft enclosures: The required 
fireresistance rating of the fire separation 
assemblies enclosing vertical shafts, other 
than stairway enclosures and elevator 
hoistway enclosures, shall be reduced to one 
hour where automatic sprinklers are 
installed within the shafts at the top and at 
alternate floor levels. 

403.4 Automatic fire detection: A smoke detector 
suitable for the intended application shall be 
installed in each of the following rooms: mechanical 
equipment; electrical; transformer; telephone 
equipment; elevator machine; or similar room. The 
actuation of any detector shall sound an alarm at a 
constantly attended location. 

403.5 Voice/alarm signaling systems: A 

voice/alarm signaling system shall be provided in 
accordance with 780 CMR 917.9 and activated in 
accordance with 780 CMR 917.7.1. 

403.6 Fire department communication system: A 

two-way fire department communication system 
shall be provided for fire department use. The 
communication system shall operate between the fire 
command station and every elevator, elevator lobby 
and enclosed exit stairway. Acceptable types of fire 
department communications shall include: 

1 . Telephone or fire department radio in lieu of 
a dedicated system, where approved by the fire 
department; and 

2. Intercom or two-way public address system 
complying with NFiPA 72 listed in Appendix A. 

403.7 Fire command station: A fire command 
station for fire department operations shall be 
provided in a location approved by the fire 
department. The^zre command station shall contain: 
the voice/alarm signaling system controls; the fire 
department communication system controls; the 
automatic fire detection and protective signaling 
system annunciator panels; an annunciator that 
visually indicates the floor location of elevators and 
whether they are operational; status indicators and 
controls for air-handling systems; controls for 
unlocking all stairway doors simultaneously; 
sprinkler valve and water-flow detector display 
panels; emergency and standby power; status 
indicators; and a telephone for fire department use 



with controlled access to the public telephone 
system. 

403.8 Elevators: Elevator operation and installation 
shall be in accordance with 524 C\[R. Elevator 
service shall be provided for fire department 
emergency access to all floors. Elevator cab 
dimensions shall conform to the applicable 
requirements of 524 CMR. 

Except for the main entrance level, all elevators 
shall open into a lobby separated from the remainder 
of the building by one hour fireresistance rated 
construction. 

Exit stairways, chutes, janitor closets, tenant 
spaces in Use Group R and service rooms shall not 
open into the elevator lobby. In Use Groups other 
than R tenant spaces opening into the elevator lobby 
shall be provided with other means of exit access 
that do not require passage through the elevator 
lobby. 

Exception: elevator lobbies are not required 
when a smoke control system is installed in 
accordance with 780 CMR 921.7. 

403.9 Standby power, light and emergency 
systems: Standby power, light and emergency 
systems shall comply with the requirements of 
780 CMR 403.9.1 through 403.9.3. 

403.9.1 Standby power: A standby power system 
conforming to the requirements of 527 CMR as 
listed in Appendix A. If the standby system is a 
generator set inside a building, the system shall be 
located in a separate room enclosed with two-hour 
fireresistance rated fire separation assemblies. 
System supervision with manual start and transfer 
features shall be provided at the fire command 
station. 

403.9.1.1 Fuel supply: An on-premises fuel 
supply, sufficient for not less than two-hour 
full-demand operation of the system, shall be 
provided. 

Exception: Where the system is supplied 
with pipeline natural gas and is approved. 

403.9.1.2 Capacity: The standby system shall 
have a capacity and rating that supplies all 
equipment required to be operational at the 
same time. The generating capacity is not 
required to be sized to operate all of the 
connected electrical equipment simultaneously. 

403.9.1.3 Connected facilities: All power and 
lighting facilities for the fire command station 
and elevators specified in 780 CMR 403.7 and 
403.8, as applicable, and electrically powered 
fire pumps required to maintain pressure, shall 
be transferable to the standby source. Standby 
power shall be provided for at least one 
elevator to serve all floors and be transferable 
to any elevator. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



office spaces incidental to tower operation and 
lounges for employees, including restrooms. 

414.2 Type of construction: Air traffic control 
towers shall be constructed to conform to the height 
and area limitations of Table 414.2. 

Table 414.2 
HEIGHT AND AREA LIMITATIONS FOR 
AIRPORT TRAFFIC CONTROL TOWERS 



Type of 
construction 


Height a ' b 


Maximum area 
(square feet) 


1A, IB 

: 2A 

; 2B 

2C 


Unlimited 
240feet 
100 feet 
85 feet 


1,500 
1,500 : : 
1,500 
1.500 



Note a. Height to be measured from grade to cab 
floor. 

Note b. 1 foot - 304.8 mm; 1 square food = 0.093m . 

414.3 Egress: A minimum of one exit stairway shall 
be permitted for airport traffic control towers of any 
height provided that the occupant load per floor does 
not exceed 15. The stairway shall conform to the 
requirements of 780 CMR 1014.0 and 1015.0. The 
stairway shall be separated from elevators by a 
minimum distance of Vi of the diagonal of the area 
served. 

Exception: Smokeproof enclosures as set forth in 
780 CMR 1015.0 are not required where required 
stairways are pressurized to a minimum of 0.15 
inch of water column (37.33 P) and a maximum of 
0.35 inch of water column (87.10 P) in the shaft 
relative to the building with all stairway doors 
closed. 

414.4 Automatic fire detection systems: Airport 
traffic control towers shall be provided with an 
automatic fire detection system installed in 
accordance with 780 CMR 918.0. 

414.5 Standby power: A standby power system that 
conforms to 780 CMR 403 .9 and 527 CMR 12. 00 as 
listed in Appendix A shall be provided in airport 
traffic control towers more than 65 feet (19812 mm) 
in height. Power shall be provided to mechanical 
equipment servicing smokeproof enclosures and 
stairway pressurization systems, means of egress 
lighting, elevator operational equipment and the 
automatic fire detection system. 

780 CMR 415.0 OUTDOOR PROCESSING 
FACILITIES 

415.1 Industry standards: Outdoor processing 
facilities such as chemical plants, refineries and 
grain elevators shall be constructed in accordance 
with the accepted engineering practice of the 
specific industry and the fire prevention code listed 
in Appendix A, subject to the approval of the the 
' building code enforcement official and the fire 
prevention officer. 



780 CMR 416.0 BDPM FACILITIES 

416.1 Scope: The provisions of 780 CMR 416.0 
shall apply to buildings and structures using 
hazardous production materials (HPM), such as in 
semiconductor fabrication facilities and areas of 
comparable research and development. Except as 
specifically required by 780 CMR 416.0, such 
buildings shall comply with the applicable 
requirements of 780 CMR. The specific code 
provisions of 780 CMR 307.0, 506.3 and Table 
1009.2 applicable to high-hazard use groups shall 
not apply unless stated herein. 

416.2 Definitions: The following words and terms 
shall, for the purposes of 780 CMR 416.0 and as 
used elsewhere in 780 CMR, have the meanings 
shown herein. 

Emergency control station: An approved location on 
the premises where signals from emergency 
equipment are received and which is staffed by 
trained personnel. 

Fabrication area: A fabrication area is one in which 
there are processes involving hazardous 
production materials (HPM), and includes 
ancillary rooms or areas, such as dressing rooms 
and offices, which are supplemental to the area 
processes. 

Hazardous production material (HPM): A solid, 
liquid or gas that has a degree of hazard rating in 
health, flammability or reactivity of Class 3 or 4 
as ranked by NFiPA 704 listed in Appendix A and 
which is used directly in research, laboratory or 
production processes which have as their end 
product, materials which are not hazardous. 

Service passage, HPM: A passage in which 
hazardous production materials (HPM) are 
transported from a separate inside HPM storage 
room or the exterior of the building to the 
perimeter wall of the fabrication area, for 
purposes other than required means of egress. 

Storage room, HPM, separate inside: A room in 
which hazardous production materials (HPM) are 
stored in containers, tanks, drums or other means, 
and which is separated from other occupancies. 
Such rooms include: 

HPM cutoff room: An HPM storage room within 
a building and having at least one exterior wall. 
HPM inside room: An HPM storage room totally 
enclosed within a building and not having exterior 
walls. 

416.3 Allowable heights, stories and area: The 

allowable height, number of stories and basic areas 
permitted for HPM buildings and structures shall not 
exceed the limitations specified in Table 416.3. The 
provisions of 780 CMR 507.0 shall not apply. The 



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79 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



area limitations are for one- or two-story buildings 
facing on a street or public space not less than 30 
feet (9144 mm) wide. The increases permitted in 
780 CMR 506.2 and 506.3 shall apply. 

Table 4163 

HEIGHT, NUMBER OF STORIES AND 

AREA LIMITATIONS FOR HPM USE 

FACILITIES 



Type of 
construction 


Number of 
stories 


Height (feet) a 


Area (square 
feet/floor) 


lAandlB 


3 


55 


Unlimited 


2A 


3 


55 


34,200 


2B 


3 


55 


22,500 


2C 


3 


40 


14,400 


3A 


3 


50 


19,800 


3B 


j 


40 


14,400 


4 


3 


55 


21,600 


5A 


j 


40 


15,300 


5B 


2 


30 


7,200 



Note a. 1 foot = 304.8 mm; 1 square foot = 0.093 nr 

416.4 Fire suppression: HPM facilities shall be 
equipped throughout with an automatic sprinkler 
system in accordance with 780 CMR 9. The design 
for the fabrication areas, service passages, separate 
inside HPM storage rooms without dispensing, and 
means of egress corridors shall meet the 
requirements for Ordinary Hazard Group 2 in 
NFiPA 13 listed in Appendix A. The design for 
separate inside HPM storage rooms with dispensing 
shall meet the requirements for Extra Hazard Group 
2 in NFiPA 13 listed in Appendix A. 

416.5 Amount of HPM in a fabrication area: The 

total amount of HPM permitted in a single 
fabrication area shall be based on the densities in 
Table 416.5(2), or the quantities in Table 416.5(1), 
whichever is the larger amount. 



Table 416.5(1) 
PERMITTED AMOUNTS OF HPM IN A 

SINGLE FABRICATION AREA- 
QUANTITY BASIS 



Material 



Maximum quantity 



Flammable liquids 

Class I-A 

Class I-B 

Class I-C 
Combination flammable liquids 

containing not more than the exempt 

amounts of Class I-A, I-B or I-C 

flammable liquids 
Combustible liquids 

Class II 

Class III-A 
Flammable gases 



Liquefied flammable gases 

Flammable solids 

Corrosive liquids 

Oxidizing material - gases 

Oxidizing material - liquids 

Oxidizing material - solids 

Organic peroxides 

Highly toxic material and poisonous gas 



90 gallons 
180 gallons 
270 gallons 



360 gallons 

360 gallons 

750 gallons 

9,000 cubic feet at 

one atmosphere of 

pressure at 70 °F 

180 gallons 

1,500 pounds 

1 65 gallons 

18,000 cubic feet 

150 gallons 

1,500 pounds 

30 pounds 

Included in the 

aggregate for 

flammables as noted 

above 



Note a. 1 gallon - 0.00379 m 3 ; 1 cubic foot = 0.028 m 3 ; 
1 pound = 0.454 kg; degrees C = {(degrees F)-32}/1.8. 

Table 416.5(2) 

PERMITTED AMOUNTS OF HPM IN A 

SINGLE FABRICATION AREA— DENSITY 

BASIS a ' C 



State 


Units 


Flam- 
mable 


Oxi- 
dizer 


Cor- 
rosive 


Solid 

Liquid 

Gas 


Pounds per aquare foot 
Gallons per square foot 

Cubic feet oer square foot 


0.001 
0.04 b 

1.250 


0.003 
0.03 

1.250 


0.003 

0.08 

3.000 



Note a. HPM within piping shall not be included in the 

calculated quantities. 

Note b. The maximum permitted quantities of flammable 

and combustible liquids shall not exceed the following 

quantities: 

Class (I-A) + (I-B) + (I - C) (combination 

flammable liquids) = .025 

However Class I-A shall not exceed = .0025 

Class II = .01 

Class III-A =.02 

Note c. Highly toxic materials and poisonous gases 
shall be limited by the maximum quantities specified in 
Table 416.5(1). 

Note d. One pound per square foot = 4.882 kg/m 2 ; 1 
gallon per square foot = 0.0407 m 3 /m 2 ; 1 cubic foot per 
square foot = 0.301 m 3 /m . 



80 



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1 2/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



416.6 Egress: There shall not be less than two 
means of egress provided for any fabrication area or 
any HPM facility subdivision thereof larger than 200 
square feet (18.62 m 2 ). The maximum length of exit 
access travel in HPM facilities shall be 100 feet 
(30480 mm). 

416.7 Separation: Fabrication areas shall be 
separated from each other, from means of egress 
corridors, and from other parts of the building by 
not less than one-hour fire separation assemblies in 
compliance with 780 CMR 709.0, with fire doors 
complying with 780 CMR 716.0. Floors forming 
part of the required separation shall be liquid tight. 

416.8 Floors: Floors within fabrication areas shall 
be of approved noncombustible construction. 
Unprotected openings through floors of fabrication 
areas are permitted where the interconnected levels 
are used solely for mechanical equipment directly 
related to such fabrication areas. 

Mechanical, duct and piping penetrations within 
a fabrication area shall not extend through more 
than two floors. Penetrations shall be effectively 
firestopped in accordance with 780 CMR 720.6.4 at 
the floor level. The fabrication area, including the 
areas through which ductwork and piping extend, 
shall be considered a single conditioned space or fire 



416.9 Ventilation, general: Ventilation systems 
shall comply with the mechanical code listed in 
Appendix A except as otherwise provided herein. 
Ventilation, including recalculated air, shall be 
provided throughout the fabrication area at the rate 
of not less than lcfm per square foot (5074 
cmVs/nr) of floor area. 

416.9.1 Interconnection: The exhaust system of 
one fabrication area shall not connect to another 
exhaust system outside that fabrication area 
within the building. The return air system from 
one fabrication area shall not connect to any 
other system. 

416.9.2 Smoke detectors: Smoke detectors shall 
be installed in the recirculating air stream and 
shall initiate a signal at the emergency control 
station. 

416.93 Shutoff switches: Automatic shutoffs are 
not required to be installed on air-moving 
equipment. A manually operated remote switch 
to shut off the fabrication area supply or the 
recirculation air system, or both, shall be provided 
at an approved location outside the fabrication 
area. 

416.9.4 Gas detection: Where HPM gas is used 
or dispensed and the physiological warning 
properties for the gas are at a higher level than the 
accepted permissible exposure limitation for the 
gas, a continuous gas-monitoring system shall be 



provided to detect the presence of a short-term 
hazard condition. Where dispensing occurs and 
flammable gases or vapors are liberated in 
quantities exceeding 20% of the lower explosive 
limitation, a continuous gas-monitoring system 
shall be provided. The monitoring system shall 
be connected to the emergency control station. 

416.10 Transporting HPM: HPM shall be 
transported to fabrication areas through enclosed 
piping or tubing systems which comply with 
780 CMR 416.15, through service passages, or in 
means of egress corridors as permitted in the 
exception to 780 CMR 416.12. 

416.11 Electrical: Electrical equipment and devices 
within the fabrication area shall comply with 
527 CMR listed in Appendix A. The requirements 
for hazardous locations are not required to be 
applied where the average rate of air change is at 
least four cfm per square foot (20300 cm 3 /s/m 2 ) of 
floor area and where the rate of air change at any 
location is not less than three cfm per square foot 
(15200 cm 3 /s/m 2 ). 

416.12 Means of egress corridors: Means of egress 
corridors shall comply with 780 CMR 101 1.4 and 
shall be separated from fabrication areas as 
specified in 780 CMR 416.7. Means of egress 
corridors shall not be used for transporting HPM 
except as provided for in 780 CMR 416.12.1 and 
416.15.2. 

416.12.1 Existing facilities: In existing HPM 
facilities, when there are alterations or 
modifications to existing fabrication areas, the 
transportation of HPM in means of egress 
corridors shall be permitted provided that all of 
the requirements of 780 CMR 416.12.1.1 and 
416.12.1.2 are met. 

416.12.1.1 Corridors: Corridors adjacent to 
the fabrication area under alteration shall 
comply with Table 602, item 4, for a length 
determined as follows: 

1 . The length of the common wall of the 
corridor and thai fabrication area; and 

2. For the distance along the corridor to 
the point of entry of HPM into the corridor 
serving that fabrication area. 

416.12.1.2 Openings: There shall not be 
openings between the corridor and an HPM 
storage cabinet in a. fabrication area other than 
those in compliance with all of the following: 

1. one-hour fire doors are installed 
between the corridor and the cabinet; 

2. The cabinet is separated from the 
corridor with a one-hour fireresistance rated 
fire partition; and 

3. Automatic sprinklers shall be provided 
inside the cabinets 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



416.13 Service passages: Service passages shall be 
considered as HPM facilities. Service passages shall 
be separated from means of egress corridors as 
required by 780 CMR 416.7. 

416.13.1 Ventilation: Service passages shall be . 
ventilated as required by 780 CMR 416.9. 

416.13.2 Egress: There shall not be less than two 
means of egress from a service passage. Not 
more than one-half of the required means of 
egress shall be into ^fabrication area. Doors 
from service passages shall be self-closing and 
swing in the direction of means of egress travel. 

416.133 Travel distance: The maximum distance 
of travel from any point in a service passage to an 
exit or door into a fabrication area shall not 
exceed 75 feet (22860 mm). Dead ends shall not 
exceed four feet (1219 mm) in length. 

416.13.4 Alarms: Alarms shall be provided for in 
accordance with 780 CMR 416.14.5. 

416.14 Storage of HPM, general: Rooms used for 
the storage of HPM m quantities greater than those 
set forth in Tables 307.8(1) and 307.8(2), except for 
those quantities permitted within a fabrication area, 
shall comply with the provisions of NFiPA 30 listed 
in Appendix A, provided that the area of an HPM 
cutoff room shall not exceed 6,000 square feet (558 
m 2 ). The storage area for any liquid HPM shall be 
provided with drains. 

416.14.1 Location within building: Where HPM 
cutoff rooms are provided, such rooms shall not 
be less than 30 feet (9144 mm) from lot lines. 

416.14.2 HPM drainage systems: Drainage 
systems shall be provided to direct liquid leakage 
and fire protection water to a safe location away 
from the building, important valves or adjoining 
property. HPM flammable liquid drains shall be 
separated from other HPM liquid drains Other 
HPM liquids in drains that are not compatible 
shall be separated from each other, provided that 
the liquids are permitted to be combined when 
such liquids have been rendered acceptable for 
discharge by an approved means into the public 
sewers. 

416.143 Egress: There shall be two means of 
egress from a separate inside HPM storage room 
where the room exceeds 200 square feet (186 m 2 ) 
in area. Where two means of egress are required 
from HPM cutoff rooms, one shall be directly to 
the outside of the building. All storage room 
means of egress doors shall be self-closing and 
swing in the direction of means of egress travel 

416.14.4 Ventilation: Exhaust ventilation shall be 
provided for in accordance with 780 CMR 416.9 
for all categories of HPM. 

416.14.5 Emergency alarm: An emergency 
telephone system or local fire protective signaling 



system station shall be installed outside of each 
interior egress door from HPM cutoff rooms. The 
signal shall be relayed to the emergency control 
station and a local signaling device provided. 

416.14.6 Electrical: HPM cutoff rooms 
containing flammable liquids or gases shall be 
classified as Class I, Division 1, hazardous 
locations in accordance with 527 CMR listed in 
Appendix A. 

416.14.7 Gas detection: Gas detection shall be 
provided for in accordance with 780 CMR 
416.9.4. 

416.15 Piping and tubing: HPM piping and tubing 
shall comply with 780 CMR 416.15 and shall be 
installed in accordance with ASME B3 1 .3 listed in 
Appendix A. 

416.15.1 General: Piping and tubing systems 
shall be metallic unless the material being 
transported is incompatible with such system. 
Systems supplying gaseous HPM, having a health 
hazard of 3 or 4 as ranked by NFiPA 704 listed in 
Appendix A, shall be welded throughout, except 
for connections, valves and fittings which are 
within an exhausted enclosure. HPM supply 
piping or tubing in service passages shall be 
exposed to view. 

416.15.2 Installation in egress corridors or 
above other use groups: HPM shall not be 
located within means of egress corridors or above 
areas not containing HPM facilities except as 
permitted by 780 CMR 416.15. HPM piping and 
tubing shall be permitted within the space defined 
by the walls of means of egress corridors and the 
floor or roof above, or in concealed spaces above 
other use groups under the following conditions: 

1. Automatic sprinklers shall be installed 
within the space unless the space is less than 
six inches (152 mm) in least dimension. 

2. Ventilation at not less than six air changes 
per hour shall be provided. The space shall not 
be used to convey air from any other area. 

3. All HPM supply piping and tubing and 
HPM non-metallic waste lines shall be 
separated from the means of egress corridor 
and from any use group other than an HPM use 
facility by afire separation assembly having a 
fireresistance rating of not less than one hour. 
Where gypsum wallboard is used, joints on the 
piping side of the enclosure are not required to 
be taped, provided that the joints occur over 
framing members. 

4. Where piping or tubing is used to transport 
HPM liquids, a receptor shall be installed 
below such piping or tubing. The receptor 
shall be designed to collect and drain any 
discharge or leakage to an approved location. 
The one-hour enclosure required by 780 CMR 



82 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



416.15.2, item 3 shall not be used as part of the 
receptor. 

5. Manual or automatic remotely activated 
fail-safe emergency shutoff valves, with ready 
access thereto, shall be installed on piping and 
tubing, other than waste lines, at branch 
connections into the fabrication area, and at 
entries into means of egress corridors. 

6. Where HPM supply gas is carried in 
pressurized piping, a fail-safe system for 
excess flow control shall shut off flow due to a 
rupture in the piping. 

7 Electrical wiring and equipment located in 
the piping space shall be approved for Class I, 
Division 2, hazardous locations in accordance 
with 527 CMR listed va Appendix A. 
8. Gas detection shall be as provided for in 
780 CMR 41 6.9.4 

Exception: Conditions 1 through 8 shall not 
apply to transverse crossings of the 
corridors by supply piping that is coaxially 
enclosed within a ferrous pipe or tube for 
the width of the corridor. An enclosing 
pipe or tube open to an HPM use facility is 
permitted. 

416.153 Identification: Piping, tubing and HPM 
waste lines shall be identified in accordance with 
ASMEA13.1 listed in Appendix A. 

780 CMR 417.0 HAZARDOUS MATERIALS 
(See also 780 CMR 426.0 for the design and 
constriction of Bulk Merchandising Retail 
Buildings.) 

417.1 General: The provisions of 780 CMR 417.0 
shall apply to all buildings and structures occupied 
for the manufacturing, processing, dispensing, use or 
storage of hazardous materials. All buildings and 
structures with an occupancy in Use Group H shall 
also comply with the applicable provisions of 
780 CMR 418.0 and the fire prevention code listed 
in Appendix A. 

Note: The safe design of hazardous material 
occupancies is material dependent. Individual 
material requirements are also found in 780 CMR 
307.0 and 418.0, and in the mechanical and fire 
prevention codes listed in Appendix A . Since the 
fire department is responsible for inspection of 
these occupancies for proper utilization and 
handling of hazardous materials, the 
administrative authority shall cooperate with the 
fire department in the discharge of the 
responsibility to enforce 780 CMR 417.0 

417.2 Control areas/exempt amounts: Control 
areas shall be those spaces within a building where 
quantities of hazardous materials not exceeding the 
allowable exempt amounts are stored, dispensed, 
utilized or handled. Control areas shall be separated 
from all adjacent interior spaces by fire separation 
assemblies in accordance with 780 CMR 709.0. The 



number of permitted control areas and degree of fire 
separation shall be in accordance with Table 417.2. 
The floor construction and supporting structure for 
all floors within the control area shall require a 
minimum two-hour fireresistance rating. 



Table 417.2 
PERMITTED CONTROL AREAS 



a,b 





Percent of 








allowable 


Control areas 
per floor 


Vertical fire 


Floor level 


exempt 


separation 




quantities per 


walls (hours) 




control area 






1 


100 


4 


1 


2 


75 


3 


1 


3 


50 


2 


1 


4 


12.5 


2 


2 


5 


12.5 


2 


2 


6 


12.5 


2 


2 


7-9 


5 


2 


2 


Higher than 9 


5 


1 


2 



Note a. The number of floor levels below grade shall 
not exceed two. The first floor level before grade shall be 
limited to 75% of the maximum allowable exempt 
quantity per control area with a maximum of three 
control areas. The second floor level below grade shall 
be limited to 50% of the maximum allowable exempt 
quantity per control area with a maximum of two control 
areas. 

Note b. In mercantile occupancies, a maximum of two 
control areas per floor shall be permitted in retail sales 
rooms. 

417.2.1 Hazardous material in mercantile 
display areas: Except as modified by 780 CMR 
426, the aggregate quantity of nonflammable solid 
and nonflammable or noncombustible liquid 
hazardous materials permitted within a single 
control area of a retail sales occupancy is 
permitted to exceed the exempt amounts specified 
in Tables 307.8(1) and 307.8(2) without 
classifying the building as a high-hazard use 
group, provided that the materials are stored in 
accordance with the fire prevention code listed in 
Appendix A. 

417.3 Equipment rooms: Heating and ventilating 
equipment in occupancies involving fire hazards 
from flammable vapors, dusts, combustible fibers or 
other highly combustible substances shall be 
installed and protected against fire and explosion 
hazards in accordance with the mechanical code and 
the fire prevention code listed in Appendix A. 

417.4 Hazardous material systems: Systems 
involving hazardous materials shall be suitable for 
the intended application and shall be designed by 
persons competent in such design. Controls shall be 
designed to prevent materials from entering or 
leaving process or reaction systems at other than the 
intended time, rate or path. Automatic controls, 
where provided, shall be designed to be fail safe. 



12/12/97 (Effective 8/28/97) 



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83 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



417.5 Inside storage, dispensing and utilization: 

The inside storage, dispensing and utilization of 
hazardous materials in excess of the allowable 
exempt amounts of Tables 307.8(1) and 307.8(2) 
shall be in accordance with 780 CMR 417.5.1 
through 417.5.5 and the fire prevention code listed 
in Appendix A. 

417.5.1 Explosion control: Every structure, room 
or space occupied for purposes involving 
explosion hazards shall be provided with 
explosion venting, explosion suppression systems, 
barricades or equivalent explosion protective 
devices in accordance with 780 CMR 417.0 and 
NFiPA 495 listed in Appendix A where required 
by 780 CMR 418.0 and the fire prevention code 
listed in Appendix A. 

Exception: Explosion venting shall not be 
utilized as a means to protect buildings from 
detonation hazards. 

417.5.1.1 Explosion venting: Areas which are 
provided with explosion venting to relieve 
deflagration shall comply with the following: 

1. Walls, ceilings and roofs exposing 
surrounding areas shall be designed to resist 
a minimum internal pressure of 100 pounds 
per square foot (psf). 

2. Explosion venting shall be permitted 
only in exterior walls or roofs or through 
specially designed shafts to the exterior of 
the building. 

3. Venting shall be designed to prevent 
serious structural damage and the 
production of lethal projectiles. 

4. The aggregate clear vent relief area shall 
be governed by the pressure resistance of 
the nonrelieving portions of the building. 

5. Vents shall be designed to relieve at a 
maximum internal pressure of 20 pounds 
per square foot (psf) and shall consist of any 
one or any combination of the following: 

5.1. Walls of lightweight material. 

5.2. Lightly fastened hatch covers. 

5.3. Lightly fastened, outward-opening 
swinging doors in exterior walls. 

5.4. Lightly fastened walls or roofs. 

6. Venting devices shall discharge directly 
to the open air or to an unoccupied space 
not less than 50 feet in width on the same 
lot. 

7. Relieving devices shall be so located 
that the discharge shall not be less than ten 
feet vertically and 20 feet horizontally from 
window openings or exits in the same or 
adjoining buildings or structures. 

8. Discharge shall be in the direction of 
least exposure and not into the interior of 
the building. 

417.5.1.2 Explosion suppression systems: 

Explosion suppression systems shall be of an 
approved type and installed in accordance with 



the provisions of 780 CMR and NFiPA 69 
listed in Appendix A. 

417.5.2 Monitor control equipment: Monitor 
control equipment shall be provided where 
required by the fire prevention code listed in 
Appendix A. 

417.5.3 Detection systems: All occupancies in 
Use Group H shall be provided with an automatic 
fire detection system in accordance with NFiPA 
72 listed in Appendix A where required by the fire 
prevention code listed in Appendix A. The 
detection system shall be provided in the areas 
where the high-hazard materials are utilized and 
stored. 

417.5.4 Standby power: Where mechanical 
ventilation, treatment systems, temperature 
control, alarm, detection or other electrically 
operated systems are required, such systems shall 
be connected to an emergency electrical system in 
accordance with 527 CMR 12.00 as listed in 
Appendix A or a standby power system in 
accordance with 527 CMR 12.00 as listed in 
Appendix A. Such systems shall be independent 
of the public supply. 

417.5.5 Spill control, drainage and 
containment: Rooms, buildings or areas occupied 
for the storage of solid and liquid hazardous 
materials shall be provided with a means to 
control spillage and to contain or drain off 
spillage and fire protection water discharged in 
the storage area where required in 780 CMR 
418.0 and the fire prevention code listed in 
Appendix A. 

417.6 Outside storage, dispensing and utilization: 

The outside storage, dispensing and utilization of 
hazardous materials in excess of the exempt 
amounts shall be in accordance with 780 CMR 
417.6. 1 through 417.6.6 and the fire prevention code 
listed in Appendix A. 

417.6.1 Location: In addition to the general 
requirements of 780 CMR 417.6.2 through 
417.6.5, the outside storage of hazardous 
materials as listed in 780 CMR 307.0 shall be 
separated from buildings and lot lines and into 
individual areas as specified in the fire prevention 
code listed in Appendix A. 

417.6.2 Protection from vehicles: Guard posts or 
other means shall be provided to protect outside 
storage tanks from vehicular damage. 

417.6.3 Fire lanes and water supply: Fire lanes 
and approved water supplies shall be provided for 
outside storage areas as required by the code 
official. 

1 . Fire lanes. Fire lanes shall be provided to 
within 150 feet (45720 mm) of all portions of 
an outside storage area. Such fire lanes shall 



84 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



421.1 General: Swimming and bathing pools shall 
conform to the requirements of 780 CMR 421.0 
provided that 780 CMR 42 1 .0 shall not be applicable 
to any such pool less than 24 inches (610 mm) deep 
or having a surface area less than 250 square feet 
(23.25 m 2 ), except where such pools are permanently 
equipped with a water-recirculating system or 
involve structural materials. For the purposes of 
780 CMR, pools are classified as private swimming 
pools, public swimming pools or semi-public 
swimming pools, as defined in 780 CMR 421.2. 
Materials and constructions used in swimming pools 
shall comply with the applicable requirements of 
780 CMR. 

421.2 Definitions: The following words and terms 
shall, for the purposes of 780 CMR 421.0 and as 
used elsewhere in 780 CMR, have the meanings 
shown herein. 

Pools, swimming, hot tubs and spas 

Above-ground/on-ground pool: See definition of 
private swimming pool. 

Barrier: A fence, a wall, a building wall or a 
combination thereof which completely surrounds 
the swimming pool and obstructs access to the 
swimming pool. (Refer to M.G.L. c 140, § 206 
for required enclosure of public or semi-public, 
outdoor, inground swimming pools.) 
Hot tub (special purpose pool): A unit designed 
for recreational and therapeutic use which is 
shallow in depth and not meant for swimming or 
diving. These pools are not drained, cleaned or 
refilled for each user. It may include, but not be 
limited to hydrojet circulation, hot water, cold 
water mineral baths, air induction bubbles, or any 
combination thereof. Industry terminology for 
such a pool includes but is not limited to, 
therapeutic pool, hydrotherapy pool, whirlpool, 
hot spa, hot tubs, float tanks, etc. This standard 
excludes residential units and facilities used or 
under the direct supervision and control of 
licensed medical personnel. 
In-ground pool: See definition of private 
swimming pool. 

Private swimming pool: Any structure that 
contains water over 24 inches (610 mm) in depth 
and which is used, or intended to be used, for 
swimming or recreational bathing in connection 
with an occupancy in Use Group R-3 or R-4 and 
which is available only to the family and guests of 
the householder. This includes in-ground, above- 
ground and on-ground swimming pools, hot tubs 
and spas. 

Private swimming pool, indoor: Any private 
swimming pool that is totally contained within a 
private structure and surrounded on all four sides 
by walls of said structure. 
Private swimming pool, outdoor: Any private 
swimming pool that is not an indoor pool. 



Public outdoor, inground swimming pool: Any 
swimming pool which is used, or intended to be 
used, for swimming or recreational bathing by 
the general public Refer to M.G.L. c 140, §206 
for requirements pertaining to public or semi- 
public, outdoor, inground swimming pool 
enclosures, safety equipment, inspection, and 
penalties for violations. 

Public swimming pool, outdoor: Any public 
swimming pool that is not defined as an outdoor, 
inground swimming pooL 
Semi-public outdoor, inground swimming pool: 
(as defined by M.G.L. c 140, § 206) any 
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, or similar establishment 
where the primary purpose of the establishment 
is not the operation of the swimming facilities. 
Semi-public outdoor, inground swimming pool 
shall also mean a pool constructed and 
maintained by groups for the purposes of 
providing bathing facilities for members and 
quests only. Refer to M.G.L. c 140, § 206 for 
requirements pertaining to public or semi-public, 
outdoor, inground swimming pool enclosures, 
safety equipment, inspection, and penalties for 
violations. 

Semi-public swimming pool, outdoor: Any semi- 
public swimming pool that is not defined as a 
semi-public outdoor, inground swimming pool. 
Spa: See definition of private swimming pool. 
Wading Pool: Aapool 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 

4213 Permits and construction documents: A 

swimming pool or appurtenances thereto shall not be 
constructed, installed, enlarged or altered until 
construction documents have been submitted and a 
permit has been obtained from the code official. The 
approval of all city, county and state authorities 
having jurisdiction over swimming pools shall be 
obtained before applying to the code official for a 
permit. Certified copies of these approvals shall be 
filed as part of the supporting data for the permit 
application. 

4213.1 Construction documents: Construction 
documents shall accurately show dimensions and 
construction of the pool and appurtenances and 
properly established distances to lot lines, 
buildings, walks and fences, as well as details of 
the water supply system, drainage and water 
disposal systems, and all appurtenances pertaining 
to the swimming pool. Detailed construction 
documents of structures, vertical elevations and 
sections through the pool showing depth shall be 
included. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



S9 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



421.4 Locations: Private swimming pools shall not 
encroach on any front or side yard required by 
780 CMR or by the governing zoning law, unless in 
accordance with specific rules of the jurisdiction in 
which the pool is located. A wall of a swimming 
pool shall not be located less than six feet (1829 
mm) from any rear or side property line or ten feet 
(3048 mm) from any street property line, unless in 
accordance with specific rules of the jurisdiction in 
which the pool is located. 

421.5 Structural design: The pool structure shall be 
engineered and designed to withstand the expected 
forces to which the pool will be subjected. 

421.5.1 Wall slopes: To a depth up to two feet 
nine inches (838 mm) from the top, the wall slope 
shall not be more than one unit horizontal in five 
units vertical (1:5). 

421.5.2 Floor slopes: The slope of the floor on 
the shallow side of the transition point shall not 
exceed one unit vertical to seven units horizontal 
(1:7). For public pools greater than 1,200 square 
feet (111.6 nr), the slope of the floor on the 
shallow side of the transition point shall not 
exceed one unit vertical to ten units horizontal 
(1:10). The transition point between shallow and 
deep water shall not be more than five feet (1524 
mm) deep. 

421.53 Surface cleaning: All swimming pools 
shall be provided with a recirculating skimming 
device or overflow gutters to remove scum and 
foreign matter from the surface of the water. 
Where skimmers are used for private pools, there 
shall be at least one skimming device for each 
1,000 square feet (93 nr) of surface area or 
fraction thereof. For public pools where water 
skimmers are used, there shall be at least one 
skimming device for each 500 square feet (55.8 
nr) of surface area or fraction thereof. Overflow 
gutters shall not be less than three inches (76 mm) 
deep and shall be pitched to a slope of one unit 
vertical to 48 units horizontal (1:48) toward 
drains, and constructed so that such gutters are 
safe, cleanable and that matter entering the gutters 
will not be washed out by a sudden surge of 
entering water. 

421.5.4 Walkways: All public and semi-public 

swimming pools shall have walkways not less than 
four feet (1219 mm) in width extending entirely 
around the pool. Curbs or sidewalks around any 
swimming pool shall have a slip-resistant surface for 
a width of not less than four foot (305 mm) at the 
edge of the pool, and shall be so arranged as to 
prevent return of surface water to the pool. 



421.5.5 Steps and ladders: At least one means of 
egress shall be provided from private pools. All 
public and semi-public pools shall provide 
ladders to other means of egress at both sides of 
the diving section and at least one means of egress 
at the shallow section; or at least one means of 
egress in the deep section and the shallow section 
if diving boards are not provided. Treads of steps 
and ladders shall have slip-resistant surfaces and 
handrails on both sides, except that handrails are 
not required where there are not more than four 
steps or where the steps extend the full width of 
the side or end of the pool. (Refer to 521 CMR 
19.00, the Architectural Access Board's rules 
and regulations, for requirements pertaining to 
the accessibility of all public and semi-public 
swimming pools.) 

421.6 Water supply: All swimming pools shall be 
provided with a potable water supply, free of cross 
connections with the pool or its equipment. 

421.6.1 Water treatment: See 105 CMR 935.000 
Minimum Standards for Swimming Pools. 

421.6.2 Drainage systems: The swimming pool 
and equipment shall be equipped to be emptied 
completely of water and the discharged water 
shall be disposed of in an approved manner that 
will not create a nuisance to adjoining property. 

421.7 Appurtenant structures: All appurtenant 
structures, installations and equipment, such as 
showers, dressing rooms, equipment houses or other 
buildings and structures, including plumbing, 
heating and air conditioning systems, shall comply 
with all applicable requirements of 780 CMR, 
applicable zoning laws and requirements, 105CMR 
435.000: Minimum Standards for Swimming 
Pools (State Sanitary Code: Chapter V), 248 CMR 
2.00 : the State Plumbing Code, and 527 CMR 
12.00: the State Electrical Code. 

421.7.1 Accessories: All swimming pool 
accessories shall be designed, constructed and 
installed so as not to be a safety hazard. 
Installations or structures for diving purposes 
shall be properly anchored to insure stability. 

421.8 Equipment installations: Pumps, filters and 
other mechanical and electrical equipment for public 
swimming pools shall be enclosed in such a manner 
as to provide access only to authorized persons and 
not to bathers. Construction and drainage shall be 
arranged to avoid the entrance and accumulation of 
water in the vicinity of electrical equipment. 



90 



780 CMR - Sixth Edition 



1 2/1 2/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL USE AND OCCUPANCY 



421.9 Enclosures for outdoor, inground public and 
semi-public swimming pools: Outdoor, inground 
public and semi-public swimming pools shall be 
provided with an enclosure in accordance with 
M.G.L. c. 140, § 206. 

421.9.1 Enclosure for public and semi-public 
outdoor, inground swimming pools: Every public 
and semi-public outdoor, inground swimming 
pool shall be enclosed by a fence six feet in 
height and firmly secured at ground level 
provided that any board or stockade fence or 
structure shall be at least five feet in height, but 
if over five feet in height, the fence shall be 
chain link. Such enclosure, including gates 
therein, shall not be less than six feet above the 
ground, and any gate shall be self-latching with 
latches placed four feet above the ground or 
otherwise made inaccessible from the outside to 
children up to eight years of age. Such 
enclosure shall be constructed of such material 
and maintained so as not to permit any opening 
in said enclosure, other than a gate, wider than 
three inches at any point along the enclosure. 
Any such pool shall be equipped with at least 
one life ring and rescue hook. 

421.9.1.1 Enclosure for all other public and 
semi-public swimming pools: The enclosure 
shall extend not less than four feet (1219 mm) 
above the ground. All gates shall be self- 
closing and self-latching with latches placed 
at least four feet (1219 mm) above the 
ground. 

421.9.2 Construction of enclosure for all other 
public and semi-public swimming pools: 

Enclosure fences shall be constructed so as to 
prohibit the passage of a sphere larger than four 
inches (102 mm) in diameter through any opening 
or under the fence. Fences shall be designed to 
withstand a horizontal concentrated load of 200 
pounds (91 kg) applied on a one-square-foot 
(0.093 m2) area at any point of the fence. 

421.10 Enclosures for private swimming pools, 
spas and hot tubs: In lieu of any zoning laws or 
ordinances to the contrary, private swimming pools, 
spas and hot tubs shall be enclosed in accordance 
with 780 CMR 421.10.1 through 421.10.4 or by other 
approved barriers. 

421.10.1 Outdoor private swimming pool: An 

outdoor private swimming pool, including an in- 
ground, above ground or on-ground pool, hot tub 
or spa shall be provided with a barrier which shall 
comply with the following. 

1. The top of the barrier shall be at least 48 
inches (1219 mm) above finished ground level 



measured on the side of the barrier which faces 
away from the swimming pool. The maximum 
vertical clearance between finished ground 
level and the barrier shall be two inches (51 
mm) measured on the side of the barrier which 
faces away from the swimming pool. Where 
the top of the pool structure is above finished 
ground level, such as an above-ground pool, 
the barrier shall be at finished ground level, 
such as the pool structure, or shall be mounted 
on top of the pool structure. Where the barrier 
is mounted on top of the pool structure, the 
maximum vertical clearance between the top of 
the pool structure and the bottom of the barrier 
shall be four inches (102 mm). 

2. Openings in the barrier shall not allow 
passage of a four-inch (102 mm) diameter 
sphere. 

3. Solid barriers shall not contain indentations 
or protrusions except for normal construction 
tolerances and tooled masonry joints. 

4. Where the barrier is composed of 
horizontal and vertical members and the 
distance between the tops of the horizontal 
members is less than 45 inches (1 143 mm), the 
horizontal members shall be located on the 
swimming pool side of the fence. Spacing 
between vertical members shall not exceed 1% 
inches (44 mm) in width. Decorative cutouts 
shall not exceed VA inches (44 mm) in width. 

5. Where the barrier is composed of 
horizontal and vertical members and the 
distance between the tops of the horizontal 
members is 45 inches (1143 mm) or more, 
spacing between vertical members shall not 
exceed four inches (102 mm). Decorative 
cutouts shall not exceed W* inches (44 mm) in 
width. 

6. Maximum mesh size for chain link fences 
shall be a l'/i-inch (32 mm) square unless the 
fence is provided with slats fastened at the top 
or the bottom which reduce the openings to not 
more than l 3 /4-inches (44 mm). 

7. Where the barrier is composed of diagonal 
members, such as a lattice fence, the maximum 
opening formed by the diagonal members shall 
be not more than W* inches (44 mm). 

8. Access gates shall comply with the 
requirements of 780 CMR 421.10.1 items 1 
through 7, and shall be equipped to 
accommodate a locking device. Pedestrian 
access gates shall open outwards away from 
the pool and shall be self-closing and have a 
self-latching device. Gates other than 
pedestrian access gates shall have a self- 
latching device. Where the release mechanism 
of the self-latching device is located less than 



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91 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



54 inches (1372 mm) from the bottom of the 
gate: (a) the release mechanism shall be 
located on the pool side of the gate at least 
three inches (76 mm) below the top of the gate; 
and (b) the gate and barrier shall not have an 
opening greater than Vi inch (13 mm) within 18 
inches (457 mm) of the release mechanism. 

9. Where a wall of a dwelling serves as part of 
the barrier, one of the following shall apply: 

9.1. All doors with direct access to the pool 
through that wall shall be equipped with an 
alarm which produces an audible warning 
when the door and its screen, if present, are 
opened. The alarm shall sound 
continuously for a minimum of 30 seconds 
immediately after the door is opened. The 
alarm shall have a minimum sound pressure 
rating of 85 dBA at ten feet (3048 mm) and 
the sound of the alarm shall be distinctive 
from other household sounds such as smoke 
alarms, telephones and door bells. The 
alarm shall automatically reset under all 
conditions. The alarm shall be equipped 
with manual means, such as touchpads or 
switches, to deactivate temporarily the 
alarm for a single opening from either 
direction. Such deactivation shall last for 
not more than 15 seconds. The deactivation 
touchpads or switches shall be located at 
least 54 inches (1372 mm) above the 
threshold of the door. 

9.2. The pool shall be equipped with an 
approved power safety cover. 

10. Where an above-ground pool structure is 
used as a barrier or where the barrier is 
mounted on top of the pool structure, and the 
means of access is a fixed or removable ladder 
or steps, the ladder or steps shall be surrounded 
by a barrier which meets the requirements of 
780 CMR 421.10.1 items 1 through 9. A 
removable ladder shall not constitute an 
acceptable alternative to enclosure 
requirements. 

421.10.2 Indoor private swimming pool: All 

walls surrounding an indoor private swimming 
pool shall comply with 780 CMR 421.10.1, item 
9. 

421.10.3 Prohibited locations: Barriers shall be 
located so as to prohibit permanent structures, 
equipment or similar objects from being used to 
climb the barriers. 

421.10.4 Exemptions: The following shall be 
exempt from the provisions of 780 CMR 421.0. 

1. A spa or hot tub with an approved safety 
cover. 

2. Fixtures which are drained after each use. 

421.11 Diving boards: Minimum water depths and 
distances for diving hoppers for pools, based on 
board height above water, shall comply with Table 



421.1 1(1) for public pools and Table 421.1 1 (2) for 
private pools. 

The maximum slope permitted between point D 2 
and the transition point shall not exceed one unit 
vertical to three units horizontal (1:3) in private and 
public pools. D, is the point directly under the end 
of the diving boards. D 2 is the point at which the 
floor begins to slope upwards to the transition point. 
See Figure 421.11. 

Figure 421.11 

MINIMUM WATER DEPTHS AND 

DISTANCES BASED ON BOARD HEIGHT 

FOR ALL PUBLIC, SEMI PUBLIC AND 

PRIVATE POOLS 

-TYPICAL POSITION OF TIP 
OF BOARD RELATIVE TO PT. 




TRANSITION POINT 



Table 421.1 1(1) 

MINIMUM WATER DEPTHS AND 

DISTANCES BASED ON BOARD 

HEIGHT FOR ALL PUBLIC POOLS 



Board height 


Minimum depth at 

D] directly under 

end of board 


Distance 
between 
Dj andD-> 


Minimum 

depth at 

D, 


27" (% meter) 

2'6" CA meter) 
T meter 
3 meter 


TO" 

T6" 

':. 8'6" 

1V0" 


8'0" 
9*0" 

]0'0" 

lO'O" 


8'6" 

: ico" 

12'0" 



Note a. 1 foot = 304.8 mm. 



Table 421.11(2) 

MINIMUM WATER DEPTHS AND 

DISTANCES BASED ON BOARD HEIGHT 

FOR PRIVATE POOLS 



Board height 


Minimum 
depth at D [ 
directly under 
end of board 


Distance 

between D] 

andD 2 


Minimum 
depth atD^ 


I'8"('/ 2 meter) 


6'0" 


7'0" 


76" 


27" (% meter) 
2'6" (V« meter) 


6' 10" 
7'5" 


7'6" 
8'0" 


8'0" 

8'0" 


3'4"(1 meter) 


8'6" 


9'0" 


9'0" 



Note a. 1 foot = 304.8 mm. 

780 CMR 4210 EXISTING BUILDINGS 

422.1 Existing Buildings: See 780 CMR 34. 

422.2 Places of assembly 

422.2.1 Change of use: An existing building or 
structure or part thereof shall not be altered or 



92 



780 CMR - Sixth Edition 



2/7/97 (Effective 2/28/97) 



CHAPTER 6 



TYPES OF CONSTRUCTION 



780 CMR 601.0 GENERAL 

601.1 Scope: The provisions 780 CMR 6 shall 
control the classification of all buildings as to type 
of construction. 

601.2 Application of other laws: The provisions of 
780 CMR 6 shall not be deemed to nullify any 
provisions of the zoning law or any other statute of 
the jurisdiction pertaining to the location or type of 
construction of buildings, except as is specifically 
required by the provisions of 780 CMR. 

6013 Hospitals: Pursuant to M.G.L c 111, § 51, 
hospitals other than college and school infirmaries 
shall be constructed of at least Type IB 
construction. 

780 CMR 602.0 CONSTRUCTION 
CLASSinCATION 

602.1 General: All buildings and structures erected 
or to be erected, altered or extended in height or 
area shall be classified in one of the five 
construction types defined in Table 602 and 
780 CMR 603.0 through 606.0. 

602.2 False designation: A building shall not be 
designated as a given type of construction unless it 
conforms to the minimum requirements for that type. 

602.3 Minimum requirements: Where a type of 
construction is used that is superior to the minimum 
herein required for any specified use, height and area 
of the building, nothing in 780 CMR shall be 
construed to require full compliance with the 
specifications for the higher type; but the designated 
construction classification of the building shall be 
that of the lesser type, unless all of the requirements 
for the higher type are fulfilled. 

602.4 No n combustibility requirements: Where a 
structure or a part of a structure is required to be 
constructed of noncombustible construction, the use 
of combustible elements shall be permitted subject 
to the limitations of 780 CMR 602.0 without altering 



the construction classification. 

602.4.1 Roofs, floors and walls: Combustible 
elements in roofs, floors and walls are permitted 
to be used for the following components: 

1. Interior finish and trim materials as 
regulated by 780 CMR 803.0, 804.0 and 806.0. 

2. Light-transmitting plastics as permitted by 
780CMR26. 

3. Fireretardant-treated wood complying with 
780 CMR 2310.0 as permitted by Table 602. 

4. Mastics and caulking materials applied to 
provide flexible seals between components of 
exterior wall construction. 

5. Roof covering materials as regulated by 
780 CMR 15. 

6. Thermal and sound insulation as permitted 
by 780 CMR 707.4.722.0. 1509.0. 2309.4 and 
2603.0. 

7. Exterior veneer and trim as permitted by 
780 CMR 1406.0. 

8. Nailing or furring strips as permitted by 
780 CMR 804.0. 

9. Windows and doors as permitted by 
780 CMR 706.4. 

10. Heavy timber as permitted by 780 CMR 
1006.3.1, 714.2 and 714.4. 

11. Partitions as permitted by 780 CMR 603.2. 

12. Roof structures as permitted by 780 CMR 
1510.0. 

13. Platforms as permitted by 780 CMR 
412.4.1. 

602.4.2 Ducts: The use of nonmetallic ducts is 
permitted in accordance with the mechanical code 
listed in Appendix A. 

602.4 J Piping: The use of combustible piping 
materials is permitted in accordance with the 
mechanical and plumbing codes listed in 
Appendix A. 

602.4.4 Electrical: The use of insulated electrical 
wiring and related components is permitted in 
accordance with 527 CMR listedm Appendix A. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



119 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

Table 602 
FERE RESISTANCE RATINGS OF STRUCTURE ELEMENTS 







Type of construction 780 CMR 602.0 




Noncombustible 


Noncombustible/Combustible 


Combustible 




Typel 

780 CMR 

603.0 


Type 2 
780 CMR 603.0 


Type 3 
780 CMR 604.0 


Type 4 

780 CMR 

605.0 


TypeS 
780 CMR 606.0 


Structure element 


Protected 


Protected 


Unprotected 


Protected 


Unprotected 


Heavy timber 
Notec 


Protected 


Unprotected 


Note a 


1A 1 IB 


2A 1 2B 


2C 


3A 


3B 


4 


5A 


5B 


1 Exterior walls 


Loadbearing 


4 1 3 


2 1 1 2 2 2 1 
Not less than the rating based on fire separation distance (see 780 CMR 705.2) - 




Nonloadbearing 


- Not less than the rating based on fire separation distance (see 780 CMR 705.2) - 


2 Fire walls and party walls 
(780 CMR 707.0) 


4|3|2|2| 2 1 2 | 2 | 2 | 2 j 2 
-Not less than the fireresistance rating required by Table 707. 1 - 




Fire enclosure of 
exits (780 CMR 
1014.11,709.0 
and Note b) 


2 


2 


2 


2 


2 


2 


2 


2 


2 


2 


3 Fire separation 
assemblies (780 
CMR 709.0) 


Shafts (other than 
exits) & elevator 
hoistway (780 
CMR 709, 7 10.0 
&Noteb) 


2 


2 


2 


2 


2 


2 


2 


2 


1 


1 




Mixed use & fire 
area separations 
(780 CMR 313.0) 


- Not less than the fireresistance rating required by Table 313.1.2- 




Other Separation 
assemblies 
(Note i) 


1 1 1 1 1 1 1 1 1 
-Note d - 


1 


1 


1 


1 


1 


4 Fire partitions 
(780 CMR 
711.0) 


Exit access 

corridors 

(Noteg) 


- Not less then the fii 
-Note d - 


eresistano 


i rating requii 


edby780CM3 


11011.4- 




Tenant spaces 
separations (Note 



-Note d - 


1 





1 


1 





5 Dwelling unit separations 

(780 CMR 7 1 1 .0, 7 1 3 .0 & Notes f 

&j) 


l|l|l|t| « 
-Note d - 


1 


1 


1 


1 


1 


6 Smoke barriers (780CMR 712.0 & 
Note p 


1 


1 


1 


1 


1 


1 


1 


1 


1 


1 


7 Other nonloadbearing partitions 










-N 




uted- 




















8 Interior load- 
bearing walls, 
loadbearing par- 
titions, col- 
umns, girders, 


Supporting more 
than one floor 


4 


3 


2 


1 





1 





See 

780 CMR 

605.0 


1 





trusses (other 
than roof truss- 
es) & framing 
(780 CMR 
715.0) 


Supporting one 
floor only or a 
roof only 


3 


2 


1*4 


1 





1 





See 

780 CMR 

605.0 


1 





9 Structural members supporting wall 
(780 CMR 715.0 & Note g) 


3 


2 


1*4 


1 




-Not less thi 


1 

infireresis 




tance rating o 


1 

"wall supports 


1 
i- 





1 Floor construction including beams 
(780 CMR 713.0 & Note h) 


3 


2 


1*4 


1 





1 





See 780 

CMR 

605.0, Note c 


1 





1 1 Roof construc- 
tion, including 
beams, trusses 


15' or less in 
height to lowest 

member 


2 


1*4 


1 


1 
-N 



3ted- 


1 





See 780 
CMR 

605.0, Note c 


1 





and framing, 
arches & roof 
deck (780 CMR 
714.0 & Notes 


More than 15' but 
less than 20' in 
height to lowest 
member 


1 


I 


1 | I 
-Note d - 








See 

780 CMR 

605.0 


1 





e,0 


20' or more in 
height to lowest 

member 


| | | | 
-Noted- 








See 
780 CMR 

60S0 









120 



780 CMR - Sixth Edition corrected - 9/19/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

FIRERESISTANT MATERIALS AND CONSTRUCTION 



a shaft enclosure that complies with 780 CMR 
710.0. 

Exceptions: A shaft enclosure is not required for 
any of the following floor openings: 

1 . A floor opening serving and contained within 
a single dwelling unit and connecting four stories 
or less. 

2. A floor opening which: 

2. 1 . Is not part of the required means of 
egress; 

2.2. Is not concealed within the building 
construction; 

2.3. Does not connect more than two stories; 

2.4. Is separated from other floor openings 
serving other floors by construction 
conforming to 780 CMR 710.3; and 

2.5. Is not open to a corridor in occupancies 
in Use Groups I and R, or is not open to a 
corridor on a floor not equipped throughout 
with an approved automatic fire suppression 
system in other use groups. 

3. A floor opening in a mall that complies with 
780 CMR 402.0. 

4. A floor opening between a mezzanine that 
complies with 780 CMR 505.0, and the floor 
below. 

5. An atrium that complies with 780 CMR 
404.0. 

6. A floor opening in an open parking structure 
that complies with 780 CMR 406.0. 

7. An approved masonry chimney where 
annular space protection is provided for in 
accordance with 780 CMR 720.6.4. 

8. A shaft enclosure for an escalator floor 
opening is not required where a shaft enclosure 
is not required for floor openings in accordance 

. with 780 CMR 713.3 or where the building is 
equipped throughout with an automatic sprinkler 
system in accordance with 780 CMR 906.2.1 and 
the escalator opening is protected in accordance 
with 780 CMR 713.4.3.4 or 713.4.3.5. 

9. A floor opening that complies with 
780 CMR 410.5 in an occupancy in Use Group 
1-3. 

10. Noncombustible shafts connecting 
communicating floor levels in an occupancy in 
Use Group 1-3 where the area complies with 
780 CMR 410.5. Where additional stories are 
located above or below, the shaft shall be 
permitted to continue with fire and smoke 
damper protection provided at the fireresistance 
rated floor/ceiling assembly between the 
noncommunicating stories. 

11. A single floor opening containing a 
stairway which is not a required means of egress 
in an occupancy in Use Group B and complying 
with the following parameters: 

11.1. The stairway does not connect more 
than six floor levels. 

1 1 .2. The stairway does not connect with 
an exit access corridor. 



1 1 .3. The stairway floor opening shall not 
exceed 160 square feet (15 m 2 ). 

1 1 .4. The stairway floor opening shall be 
protected in the same manner as an escalator 
floor opening complying with 780 CMR 
713.3 Exception 8, and 524 CMR. 

1 1 .5. The building is equipped throughout 
with an approved automatic sprinkler system 
in accordance with 780 CMR 906.2.1. 

713.4 Penetration protection: All penetrations of a 
floor/ceiling assembly or the ceiling membrane of a 
roof/ceiling assembly shall be protected by a shaft 
enclosure that complies with 780 CMR 710.0. 

Exceptions: 

1. Penetrations within and through a floor 
opening permitted to be unenclosed by 
780 CMR 713.3. 

2. Penetrations through assemblies required to 
be fireresistance rated and complying with 
780 CMR 713.4.1 or 780 CMR 713.4.2. 

3. Penetrations through assemblies without a 
required fireresistance rating and complying 
with 780 CMR 713.4.1 or 780 CMR 713.4.3. 

713.4.1 Through-penetration system: A shaft 
enclosure shall not be required where cables, 
cable trays, conduits, tubes or pipes penetrate a 
floor assembly and are protected with an 
approved through-penetration protection system 
tested in accordance with ASTM E814 listed in 
Appendix A. The positive pressure differential 
between the exposed and unexposed surfaces of 
the test assembly shall not be less than 0.01 -inch 
water gage (2.5 P). The system shall have an 
"F" rating and a "T" rating of not less than 1 
hour but not less than the required fireresistance 
rating of the assembly being penetrated. All 
penetrations through a ceiling that is an integral 
component of a fireresistance rated floor/ceiling 
or roof/ceiling assembly, shall comply with 
780 CMR 713.4.2. 

Exceptions: 

1 . A "T" rating shall not be required for 
floor penetrations that are contained and 
located within the cavity of a wall. 

2. A "T" rating shall not be required for 
floor penetrations by pipe, tube and conduit 
that are not in direct contact with 
combustible material. 

713.4.2 Fireresistance rated assemblies: The 

required fireresistance rating of floor/ceiling and 
roof/ceiling assemblies shall be determined in 
accordance with ASTM El 19 listed in 
Appendix A. Except where permitted by 
780 CMR 713.4.2.1 through 713.4.2.3, 
penetrations for electrical, mechanical, plumbing 
and communication conduits, pipes and systems 
shall be installed in accordance with the 
approved ASTM El 19 rated assembly. In the 



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135 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



case of ceilings that are an integral component of 
a fireresistance rated floor/ceiling or roof/ceiling 
assembly, all penetrations shall be installed in 
accordance with the approved ASTM El 19 rated 
assembly or 780 CMR 713.4.2.3. 

Exceptions: 

1. Outlet boxes and fittings are permitted, 
provided that such devices are listed for 
installation in fireresistance rated assemblies 
and are installed in accordance with the 
listing. 

2. Ceiling dampers shall not be required 
where fire tests have shown that such 
dampers are not necessary in order to 
maintain the fireresistance rating of the 
assembly. 

713.4.2.1 Noncombustible penetrations: 
Penetrations by noncombustible vents, 
chimneys, conduits, pipes and tubes through 
a fireresistance rated floor assembly which 
connect not more than two stories are 
permitted. Penetrations by noncombustible 
conduit, pipe and tubes through a fireresis- 
tance rated floor assembly which connect 
more than two stories are permitted provided 
that the aggregate area of the penetrating 
items shall not exceed one square foot (0.09 
m 2 ) in any 100 square feet (9.3 m 2 ) of floor 
area. In all cases, the annular space between 
the penetrating item and the assembly shall 
be protected in accordance with 780 CMR 
707.8. 

713.4.2.2 Air ducts: Penetrations by an air 
duct or plenum through a fireresistance rated 
floor assembly, which connect not more than 
two stories, are permitted where a fire 
damper that complies with 780 CMR 717.0 
is installed at the floor line. Afire damper is 
not required at penetrations of a roof/ceiling 
assembly where ducts are open to the 
atmosphere. 

713.4.23 Ceiling penetrations: In the case 
of ceilings that are an integral component of 
a fireresistance rated floor/ceiling or 
roof/ceiling assembly, openings to accom- 
modate noncombustible conduits, pipes, 
tubes, electrical outlets or air ducts shall be 
permitted provided that the aggregate area of 
such openings does not exceed 100 square 
inches (0.065 m 2 ) in any 100 square feet (9.3 
m 2 ) of ceiling area. The space around 
noncombustible conduits, pipes, tubes and 
electrical outlet boxes at the ceiling 
penetration shall be firestopped in 
accordance with 780 CMR 720.6.4 or shall 
be protected in accordance with 780 CMR 
709.7 or 780 CMR 713.4.1. For 



noncombustible air duct penetrations, an 
approved ceiling damper shall be installed at 
the ceiling line. Ceiling dampers shall be 
constructed in accordance with the details 
listed in a fireresistance rated design or shall 
be labeled to function as a heat barrier for 
air-handling outlet/inlet penetrations in the 
ceiling of a fireresistance rated assembly. 

713.43 Nonlireresistance rated assemblies: 

Penetrations of floor assemblies without a 
required fireresistance rating shall conform to 
780 CMR 713.4.3.1 through 713.4.3.3. All 
penetrations through the ceiling membrane of a 
roof assembly without a required fireresistance 
rating shall be protected in accordance with 
780 CMR 720.6.4. 

713.43.1 Noncombustible penetrations: 
Penetrations by noncombustible vents, 
chimneys, conduits, pipes and tubes through 
unprotected floor assemblies which connect 
not more than three stories are permitted 
provided that the annular space between the 
penetrating item and the floor is protected in 
accordance with 780 CMR 720.6.4. 

713.43.2 Air ducts: Penetrations by 
noncombustible air ducts through unprotect- 
ed floor assemblies which connect not more 
than three stories are permitted provided that 
a fire damper complying with 780 CMR 
717.0 is installed at each floor line. 
713.433 Noncombustible or combustible 
penetrations: Penetrations by vents, 
chimneys, cables, wires, air ducts, conduits, 
pipes and tubes through an unprotected floor 
assembly which connect not more than two 
stories are permitted provided that the 
annular space is protected in accordance 
with 780 CMR 720.6.4. 

713.43.4 Escalators/automatic fire 
shutter: Escalators shall be equipped with a 
power-operated automatic shutter at every 
floor pierced thereby, constructed of 
approved noncombustible materials with a 
fire protection rating of not less than 114 
hours. The shutter shall close immediately 
upon the automatic detection of fire and 
smoke by an approved device and shall 
completely shut off the well opening. The 
shutter shall operate at a speed of not more 
than 30 feet per minute (0.15 m/s) and shall 
be equipped with a sensitive leading edge to 
arrest the shutter's progress when in contact 
with any obstacle, and to continue the 
shutter's progress on release therefrom. 
Refer to 780 CMR 713.3, Exception 8. 



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713.4.3.5 Escalators/water curtain: The 

area of the floor opening shall not exceed 
twice the horizontal projected area of the 
escalator and the opening shall not connect 
more than four stories in occupancies in 
other that Use Groups B and M and the 
opening shall be protected by a draft curtain 
and a closed sprinkler water curtain 
conforming to NFiPA 13 listed in 
Appendix A. Refer to 780 CMR 713.3, 
Exception 8 

780 CMR 714.0 ROOF CONSTRUCTION 

714.1 General: Roofs shall be constructed of 
materials or assemblies of materials designed to 
afford the fireresistance rating required by Table 602 
as herein modified. 

714.2 Stadiums: The roof construction, including 
beams, trusses, framing, arches and roof decks, 



enclosing stadiums of Type 1 or Type 2 
construction, shall be of approved noncombustible 
materials without a specified fireresistance rating or 
of Type 4 construction. 

7143 Roofs 20 feet or higher: Where every part of 
the structural framework of roofs in buildings of 
Type 1 or Type 2 construction is 20 feet (6096 mm) 
or more above the floor immediately below, 
omission of all fire protection of the structural 
members is permitted, including the protection of 
trusses, roof framing and decking. 

714.4 Roof slabs, arches and decking: Where the 
omission of fire protection from roof trusses, roof 
framing and decking is permitted, roofs in buildings 
of Types 1 and 2 construction shall be constructed of 
noncombustible materials, or of fireretardant- treated 
wood as permitted in Table 602, without a specified 
fireresistance rating, or of Type 4 construction in 



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1362 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



CHAPTER 9 



FIRE PROTECTION SYSTEMS 

(This Chapter is Entirely Unique to Massachusetts) 



780 CMR 901.0 GENERAL 
901.1 Scope: The provisions of 780 CMR 9 shall 
specify where fire protection systems are required 
and shall apply to the design, installation, 
maintenance and operation of all fire protection 
systems in all buildings and structures. 

901.1.1 Seismic Requirements: All "required" 
and "non-required" fire protection systems shall 
be installed in accordance with the Seismic 
Criteria requirements of 780 CMR 1612.7, 
Architectural, Mechanical and Electrical 
Components and Systems. 

9012 Required systems: All fire protection systems 
required by 780 CMR shall be installed, repaired, 
operated and maintained in accordance with this 
code and the applicable reference standards listed in 
Appendix A. All required fire suppression and 
standpipe systems shall be provided with at least one 
automatic supply of fire-extinguishing agent of 
adequate pressure, capacity and reliability to 
perform the function intended. 

9013 Nonrequired systems: Any fire protection 
system or portion thereof not required by 780 CMR 
shall be permitted to be finished for partial or 
complete protection provided that such installed 
system meets applicable requirements of 780 CMR. 
A building permit shall be required for systems 
installed pursuant to 780 CMR 901.3 

901.4 Maintenance: All water based fire protection 
systems shall be maintained in accordance with 
NFPA 25 as listed in Appendix A. All other fire 
protection systems shall be maintained in accordance 
with the requirements of the applicable reference 
standards and standards listed in Appendix A. The 
owner, tenant or lessee of every building or structure 
shall be responsible for the care and maintenance of 
all fire protection systems, including equipment and 
devices, to ensure the safety and welfare of the 
occupants. Fire protection systems shall not be 
disconnected or otherwise rendered unserviceable 
without first notifying the local fire department in 
accordance with M.G.L. c. 148 § 27 A. 

When installations of fire protection systems are 
interrupted for repairs or other necessary reasons, 
the owner, tenant or lessee shall immediately advise 
the local fire department and shall diligently 
prosecute the restoration of the protection. 

901.5 Threads: All threads provided for fire depart- 
ment connections to sprinkler systems, standpipes. 



yard hydrants or any other fire hose connection shall 
be compatible with the connections used by the local 
fire department. 

901.6 Signs: All signs required to identify fire 
protection equipment, equipment rooms and 
equipment locations shall be constructed of durable 
materials, be permanently installed and be readily 
visible. Letters and numbers shall contrast with the 
sign background, shall be at least two inches in 
height and shall have an appropriate width-to-height 
ratio to permit the sign to be read easily from a 
distance of ten feet. The sign and location shall be 
approved by the local fire department. 

Exception: See also 780 CMR 906.8 for entrance 
doors to sprinkler control valve rooms and 
780 CMR 915.8 for fire department connections. 

780 CMR 902.0 DEFINITIONS 
902.1 General: The following words and terms 
shall, for the purposes of 780 CMR 9 and as used 
elsewhere in 780 CMR have the meanings shown 
herein. 

Alarm verification: A feature of automatic fire 
detection systems to reduce unwanted alarms 
wherein automatic fire detectors report alarm 
conditions for a minimum period of time, or 
confirm alarm conditions within a given period, 
after being automatically reset to be accepted as a 
valid alarm initiation signal (see 780 CMR 91 8.0). 

Approval/Permit To Install: The term refers to 
permits outside the jurisdiction of the building 
official, issued under authority of M.G.L. c. 148, 
§10Aor527CMR. 

Authority Having Jurisdiction: The term 
"Authority Having Jurisdiction" as used in the 
NFPA Standards as referenced in 780 CMR 9, 
shall mean the building official for enforcement of 
780 CMR and the BBRS for interpretation, waiver 
or variences (see 780 CMR 122.0; see official 
interpretation number 35-94 listed in Appendix B) 

Automatic: As applied to fire protection devices, 
automatic refers to a device or system that pro- 
vides an emergency function without the necessity 
of human intervention and activated as a result of 
a predetermined temperature rise, rate of tempera- 
ture rise or increase in the level of combustion 
products - such as incorporated in an automatic 
sprinkler system, automatic fire door, etc. 



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Automatic fire suppression system: An engineered 
system using carbon dioxide (CO;), foam, wet or 
dry chemical, a halogenated extinguishing agent, 
or an automatic sprinkler system to detect 
automatically and suppress a fire through fixed 
piping and nozzles (see 780 CMR 904.0). 

Construction Documents: As defined in 780 CMR 2. 

Deluge system: An automatic sprinkler system 
consisting of open sprinklers with water supply 
valves activated by a separate automatic detection 
system (see 780 CMR 908.0). 

Detector, heat: An alarm-initiating device that 
detects abnormally high temperature or rate of 
temperature rise (see 780 CMR 918.0). 

Detector, smoke: An alarm-initiating device that 
detects the visible or invisible particles of 
combustion (see 780 CMR 91 8.0). 

Emergency Voice/alarm signaling system: A 

system that provides, to the occupants of a 
building, dedicated manual or automatic facilities, 
or both, for originating and distributing voice 
instructions, as well as alert and evacuation 
signals that pertain to a fire emergency (see 
780 CMR 917.0). 

Fire alarm box, manual: A manually operated 
alarm-initiating device that activates a fire 
protective signaling system (see 780 CMR 917.0). 

Fire command station ( Fire command center): 

The principal location where the status of the 
detection, alarm, communications and control 
systems is displayed, and from which the 
system(s) has the capability for manual control 
(see 780 CMR 403.7 and 917.9). 

Fire Department Designee: An individual 
authorized by the chief of the fire department to 
review and approve fire protection system plans 
and installation. 

Fire detector, automatic: An alarm-initiating device 
that automatically detects heat, smoke or other 
products of combustion (see 780 CMR 918.0). 

Fire Protection Construction Documents: 

Documents containing the requirements of 
780 CMR 903.1.1, 903.1.2, 903.1 .3. 

Fire protection system: Devices, equipment and 
systems used to detect a fire, activate an alarm, 
suppress or control a fire, or any combination 
thereof. 

Fire Protective Signaling System (Fire Alarm 
System): A system or portion of a combination 



system consisting of components and circuits 
arranged to monitor and annunciate the status of 
fire alarm or supervisory signal initiating devices 
and to initiate appropriate response to those 
signals. 

Household Fire Warning System: A household 
fire warning system consists of single or multiple 
station detectors or a listed control unit with 
automatic fire detectors and occupant notification 
appliances. The household fire warning system 
serves only one dwelling unit, patient room, hotel 
room or other single area depending on use group 
requirements in 780 CMR 919.1 through 919.3 

Installing Contractor:An individual or firm duly 
licensed to install fire protection systems. (See 
780 CMR 903.3) 

• Automatic Sprinklers Systems - M.G.L. 
c 146, §§ 81 through 8SA, 528 CMR 11.00 
and 12.00 

• Fire Extinguishing systems - M. G.L. c 148, 
§§ 58, 527 CMR 23.00 

• Fire Alarm Systems - M.G.L. c 141, §§ 1 
through 10, 237 CMR 1.00 through 6.00 

Maintenance of Fire Protections Systems: 

Replacement or repair of any component or 
components of a fire protection system, where 
such does not affect system performance and 
compatibility. (Also see Modifications, 

Alterations, Additions or Deletions to Fire 
Protection Systems). No building permit is 
required for maintenance. Other permits, 
however, may be required pursuant to M.G.L. 
c.148, § 27A and 527 CMR. 

Modifications, Alterations, Additions or Deletions 
to Fire Protection Systems: Any changes which 
affect the performance of the fire protection 
system. (Also see maintenance). Such changes 
require a building permit and are subject to other 
permitting requirements pursuant to M.G.L. 
c. 148, § 27 A. 

Master Box: A municipal fire alarm box that may 
also be operated by remote means. 

Municipal Fire Alarm System: A system of alarm 
initiating devices, receiving equipment, and 
connecting circuits (other than a public telephone 
network) used to transmit alarms from street 
locations to the public fire service 
communications center. 

Preaction system: A fire sprinkler system employing 
automatic sprinklers attached to a piping system 
containing air with a supplemental fire detection 
system installed in the same areas as the 
sprinklers. Actuation of the fire detection system 
automatically opens a valve that permits water to 



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flow into the sprinkler piping system and to be Remote station fire alarm system supervising 

discharged from any open sprinklers (see station: Refer to the definitions in chapter 1 of 

780 CMR 906.9.6). NFPA-72 and to further details as identified in 

chapter 4 of NFPA-72 as listed in Appendix A. 

Proprietary supervising station: Refer to the 

definition in chapter 1 of NFPA-72 and to Shop Drawings: Scaled detailed working drawings 

further details as identified in chapter 4 of (system layout) and equipment specifications (cut 

NFPA-72 as listed in Appendix A. sheets) indicating all information in accordance 

with requirements of the applicable NFPA 

Registered Professional Engineer: A Registered Standards for the specific fire protection systems 

Professional Engineer registered by the Board of to be installed in accordance with the Registered 

Registration of Professional Engineers and of Professional Engineer's plans and specifications. 
Land Surveyors in accordance with M.G.L. 
c. 112, §§ 81D through 81T and 250 CMR (see 
780 CMR 903.1.3 and 903.5). 



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FIRE PROTECTION SYSTEMS 



Smoke detector, multiple station: Single-station 
smoke detectors that are capable of being 
interconnected such that actuation of one causes 
all integral or separate audible alarms to operate 
(see 780 CMR 919.0). 

Smoke detector, single station: An assembly 
incorporating the detector, the control equipment 
and the alarm-sounding device in one unit, which 
is operated from a power supply either in the unit 
or obtained at the point of installation (see 
780 CMR 919.0). 

Sprinkler: A device, connected to a water supply 
system, that discharges water in a specific pattern 
for extinguishment or control of fire (see 
780 CMR 906.0). 

Sprinkler system, automatic: A sprinkler system, for 
fire protection purposes, is an integrated system of 
underground or overhead piping designed in 
accordance with fire protection engineering 
standards. The system includes a suitable water 
supply. The portion of the system above the 
ground is a network of specially or hydraulically 
designed piping installed in a building, structure 
or area, generally overhead, and to which 
automatic sprinklers are connected in a systematic 
pattern. The system is usually activated by heat 
from a fire and discharges water over \hefire area 
(see 780 CMR 906.0). 

Sprinkler system, limited area: An automatic 
sprinkler system consisting of not more than 20 
sprinklers within a fire area (see 780 CMR 
907.0). 

Standpipe system: A standpipe system is a fire 
protection system consisting of an arrangement of 
piping, valves, hose outlets and allied equipment 
installed in a building or structure (see 780 CMR 
914.0). 

Supervisory device: An initiating device used to 
monitor the conditions that are essential for the 
proper operation of automatic fire-protection 
systems (i.e., switches used to monitor the 
position of gate valves, a low air-pressure switch 
on a dry-pipe sprinkler system, etc.) (see 
780 CMR 923.0). 

U.L. Listed or FM approved central station service: 
Central station service as defined in Chapter 1 of 
NFPA-72 and as further identified in chapter 4 
ofNFPA 72 as listed in Appendix A. 

Water supply, automatic: A water supply that is not 
dependent on any manual operation, such as 
making connections, operating valves or starting 
pumps (see 780 CMR 914.5). 



780 CMR 903.0 FERE PROTECTION 
SYSTEMS APPROVAL/ACCEPTANCE 
903.1 Required: Complete fire protection 
construction documents shall be submitted in 
accordance with 780 CMR 110 and a building 
permit obtained prior to the installation of all 
"required" or "non required" fire protection systems, 
including modifications, alterations, additions or 
deletions to an existing fire protection system. The 
fire protection construction documents shall contain 
sufficient information to completely describe ihefire 
protection systems, including operational features. 
The information required pursuant to 780 CMR 
903.0 shall include, where required, the items listed 
in 780 CMR 903.1.1: 

Exception: Maintenance; no building permit 
required. 

903.1.1 Fire Protection Construction 
Documents: 

1. a. Basis (methodology) of design for the 
protection of the occupancy and hazards for 
compliance with 780 CMR and applicable 
NFPA Standards, in the form of a narrative 
report. 

b. Sequence of operation of all fire 
protection systems and operation in the form 
of a narrative report. 

c. Testing criteria to be used for final 
system acceptance in the form of a narrative 
report. 

2. Building and site access for fire fighting 
and/or rescue vehicle(s) and personnel. 

3. Fire hydrant(s) location and water supply 
information. 

4. Type/description and design layout of the 
automatic sprinkler system(s). 

5. Automatic sprinkler system(s) control 
equipment location. 

6. Type/description and design layout of the 
automatic standpipe system(s). 

7. Standpipe system hose valve(s) type and 
location. 

8. Fire department Siamese connection type(s) 
and location. 

9. Type/description and design layout of the 
fire protective signaling system(s). 

1 0. Fire protective signaling system(s) control 
equipment and remote annunciator location. 

1 1 . Type/description and design layout of the 
smoke control or exhaust system(s). 

12. Smoke control or exhaust system(s) 
control equipment location. 

13. Building life, safety system features 
(auxiliary functions) required to be integrated 
as part of the fire protective signaling 
system(s). 

14. Type/description and design layout of the 
fire extinguishing system(s). 

15. Fire extinguishing system(s) control 
equipment location. 



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16. Fire protection system(s) equipment room 
location. 

17. Fire protection system(s) equipment 
identification and operation signs. 

18. Fire protection system(s) alarm/ 
supervisory signal transmission method and 
location. 

903.1.2 Plans: All fire protection system plans 
shall contain sufficient information to identify the 
occupancy, hazards, system and equipment 
arrangements, system and equipment sizing, 
systems specifications, systems sequence(s) of 
operation and design/engineering calculations. 

903.13 Design: All fire protection systems and 
fire protection system operation including 
building and site features as identified in 
780 CMR 903.1 1 shall be designed and specified 
by a qualified Registered Professional Engin- 
eer(s)except as provided in M.G.L. c. 143, § 54A 
and any profession or trade as provided in M.G.L. 
c. 1 12, § 60L and M.G.L. c. 1 12, § 81R All plans 
shall bear the original seal and signature of the 
Registered Professional Engineer(s), except as 
provided in M.G.L. c. 143, § 54A and any 
profession or trade as provided in M.G.L. c. 1 12, 
§ 60L and M.G.L. c. 112, § 81R Specifications 
shall include requirements for the preparation of 
shop drawings when required by 780 CMR or 
applicable NFPA Standards. The Registered 
Professional Engineer(s) or other legally 
recognized professional (M.G.L. c. 112, § 81R) 
shall be responsible for the review and certify that 
all shop drawings conform to the approved fire 
protection construction documents as submitted 
for the building permit and approved by the 
building official. 

903.1.4 As-built plans: In accordance with the 
applicable referenced standards, as-built plans 
shall be prepared by the contractor responsible for 
the installation of the fire protection system for 
the following occupancies: 

(a) High-rise buildings 

(b) Buildings and structures of Use Group A 
with a total occupant load exceeding 1000. 

(c) Buildings and structures of Use Group H. 

(d) Use Group 1-2 and 1-3 except 1-2 Uses 
provided for in 780 CMR 424. 

(e) Bulk Merchandising/Retail occupancies 
(See 780 CMR 416.0). 

As-built plans shall be provided to the owner 
upon completion. 

903.1.5 Safeguarding Construction: The fire 
protection construction documents shall provide 
specifications for conformance to 780 CMR 33 
and NFPA-241 listed in Appendix A in order to 
safeguard against fires during construction, 
alterations and demolition of all buildings and 
structures regulated by 780 CMR. 



903.2 Authority: In accordance with the 
requirements of 780 CMR 1 10 and 780 CMR 903.1 
the building of official shall transmit one set of the 
fire protection construction documents (780 CMR 
903.1.1) and building construction documents to the 
head of the fire department or his designee for 
review and approval of the items specified in 
780 CMR 903.1.1. 

Note: 

1. M.G.L. c. 148 §§ 26G, 26H and 261, when 
adopted by a city or town, will impact the fire 
protection requirements of 780 CMR 9. A 
building official shall consult Official 
Interpretation Number 45-96, listed in 
Appendix B, for guidance, where communities 
have adopted M.G.L. c. 148, §§ 26G, 26H, and/or 
261. 

2. In addition to the building permit requirements 
for fire protection systems in 780 CMR, M.G.L. 
c. 148 § 10A and 527 CMR may impose 
additional installation permitting requirements. 

903.2.1 Alternative Fire Protection Design 
Methodologies - Independent Engineering 
Review: Where alternative design methodologies 
are utilized and where such methodologies result 
in designs which vary from any prescriptive 
requirement of 780 CMR, the owner shall engage 
an independent registered professional engineer to 
review said alternative design methodologies. 
The scope of the independent registered 
professional engineer review shall include, but not 
be limited to the following; 

(a) Review of the design assumptions, 
methodologies and resulting proposed system 
designs, to determine whether the proposed fire 
protection system designs and any other 
systems which are affected by the design 
assumptions, are consistent with the general 
objectives and prescriptive provisions of this 
code and to determine whether or not the 
methodologies and assumptions conform to 
accepted engineering practice; 

(b) Preparation of a written report to the 
building official as to the appropriateness of 
the proposed design, specifically listing any 
variances from the prescriptive provisions of 
780 CMR and describing, in detail, the design 
provisions used to achieve compliance. 

If the reviewing engineer concurs with the 
proposed design, the owner shall make 
application for a variance, to the State Building 
Code Appeals Board as provided in 780 CMR 
122. In addition to all supporting information and 
materials, the reviewing engineer's report 
required in 780 CMR 903.2.1(b) shall be included 
in the application for variance. 

A building permit shall not be issued until the 
variance, if required, has been granted, or unless 
the building permit is issued in part, as provided 
for in 780 CMR 111.13. 



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9033 Fire Protection Systems Installation: Fire 

protection systems shall be installed by contractors 
and personnel appropriately licensed in the 
Commonwealth of Massachusetts {licensed 
installing contractor). Shop drawings required for 
submittals and reviews by the Registered 
Professional Engineer, or other legally recognized 
professional (M.G.L. c. 112,§ 81R), by 780 CMR 
903.1.3 or by applicable NFPA Standards shall note 
the name(s), license number(s) and license 
expiration date(s) of the contractors) installing the 
fire protection systems. 

903.4 Acceptance: In accordance with the 
provisions of 780 CMR 120, a Certificate of 
Occupancy shall not issue until the building official 
and the head of the fire department or their 
designees have witnessed a satisfactory functional 
test of all fire protection systems, installed in 
accordance with the approved fire protection 
construction documents. All fire protection systems 
shall be tested in accordance with the applicable 
provisions of 780 CMR and NFPA Standards and 
approved testing criteria and operational sequence as 
submitted in 780 CMR 903.1.1, items l.b and c. In 
addition, the following documents and/or 
information shall be simultaneously submitted to the 
building official and head of the fire department or 
their designees prior to the witnessing of the 
operational fire protection system(s) testing: 

1. Certification, from the Registered 
Professional Engineer or other legally recognized 
professional (M.G.L. c. 112, § 81R) responsible 
for the design in accordance with 780 CMR 
903.1.3 stating that the fire protection systems 
have been installed in accordance with the 
approved fire protection construction documents 
and that he has reviewed the shop drawings for 
conformance to 780 CMR 903.3 and has 
identified deviations if any, from the approved 
fire protection construction documents. 

2. Confirmation by the building owner/developer 
or authorized representative that they have 
received the as-built fire protection system shop 
drawings from the installing contractor and that 
the Registered Professional Engineer or other 
legally recognized professional (M.G.L. c. 1 12, 
§ 81R) has certified their reasonable accuracy. 

3. Material, Test, Performance and Completion 
Certificates, properly executed by the installing 
contractor in accordance with the applicable 
NFPA Standards. 

Exception: In lieu of witnessing a satisfactory 
functional test, the building official and head of 
the fire department or their designees may accept 
a final performance acceptance test report from a 
Registered Professional Engineer or other legally 
recognized professional (M.G.L. c. 112, §81R). 
Said report shall certify that a complete 
satisfactory functional test of all fire protection 
systems in accordance with the approved testing 



criteria and operational sequence have been 
witnessed. 

903.4.1 Conditional Acceptance: The 

requirements of 780 CMR 903.4 shall not 
preclude the issuance of a temporary Certificate 
of occupancy by the Building Official in 
accordance with 780 CMR 120.3. 

780 CMR 904.0 FIRE SUPPRESSION 
SYSTEMS 

904.1 Where required: Automatic fire suppression 
systems shall be installed where required by 
780 CMR, and in the locations indicated in 
780 CMR 904.2 through 904.9. 

Exceptions: 

1. An automatic fire suppression system shall not 
be required in portions of buildings that comply 
with 780 CMR 406.0 for open parking structures 
less than 70 feet in height above mean grade. 

2. In telecommunications equipment buildings, 
an automatic fire suppression system shall not be 
required in those spaces or areas occupied 
exclusively for telecommunications equipment, 
associated electrical power distribution 
equipment, batteries and standby engines, 
provided that those spaces or areas are equipped 
throughout with an automatic fire detection 
system in accordance with 780 CMR 918.0 and 
are separated from the remainder of the building 
with fire separation assemblies consisting of one- 
hour fireresistance rated walls and two-hour 
fireresistance rated floor/ceiling assemblies. 

Note: Also Refer to M.G.L. c. 148, § 26A and 
26G 

904.1.1 Additional requirements: When a 
building or structure is provided with a fire alarm 
system, all extinguishing systems installed in 
accordance with the provisions of 780 CMR 904 
through 914, shall be connected to the fire alarm 
system in accordance with the requirements of 
NFPA 72 as listed in Appendix A. 

904.1.1.1 Fire pump requirements: Refer to 

780 CMR 924. 

904.2 Use Groups A-l, A-3,- A-4, B, E, M, S-l, 
F-l in buildings of 12,000 sf or greater in 
aggregate floor area: An automatic fire suppression 
system shall be provided throughout all portions or 
uses of all buildings of 12,000 sf or greater in 
aggregate area when any of the following uses are 
located within the building; 

A-l, A-3, A-4, B, E, M, S-l, F-l 
780 CMR 904.2 shall apply whether or not the use is 
separated from any other use within the building by 
fire separation assemblies. 

Exceptions: 

1. Existing buildings: Existing buildings which 

qualify as such in accordance with 780 CMR 



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3400.3.1 and which undergo a partial change in 
use to a use or uses specified in 780 CMR 904.2 
or are mixed use buildings which undergo 
renovation of a use or uses specified in 780 CMR 
904.2, shall be provided with automatic fire 
suppression systems in accordance with the 
following: 

(a) only in those portions of the building 
which have been changed in use and only when 
such space or spaces exceed 12,000 sf in 
aggregate floor area. 

(b) only in those portions of the building 
which have been altered or renovated provided 
that such renovation constitutes substantial 
alterations or substantial renovations, in 
accordance with 780 CMR 3401 and only 
when such space or spaces exceed 12,000 sf in 
aggregate floor area. 

2. Public Garages: Public Garages shall conform 
to 780 CMR 408.0. 

Note: See also M.G.L. c. 148, §§ 26A and 
26G. 

9043 Use Group A-2 in buildings of 5,000 sf or 
greater in aggregate floor area: An automatic fire 
suppression system shall be provided throughout all 
portions or uses of all buildings of 5,000 sf or 
greater in aggregate area when any A-2 use is 
located within the building; 

780 CMR 904.3 shall apply whether or not the 
A-2 use is separated from any other use within the 
building by fire separation assemblies. 

Exception: 

1. Existing buildings: Existing buildings which 
qualify as such in accordance with 780 CMR 
3400.3.1 which undergo a partial change in use to 
an A-2 use or partial renovation of an existing A- 
2 use shall be provided with an automatic fire 
suppression system only in those portions of the 
building which have been changed to an A-2 use 
or those existing A-2 uses which have been 
renovated when such renovation constitutes 
substantial alterations or substantial renovations, 
in accordance with 780 CMR 3401 and only when 
the proposed or existing A-2 use exceeds 5,000 sf 
in aggregate floor area. 

904.4 Use Group H: An automatic fire suppression 
system shall be provided throughout all buildings of 
Use Group H. 

Exception: Magazines used for the storage of Use 
Group H-l materials which are constructed and 
located in accordance with NFPA 495 and 
527 CMR listed in Appendix A. 

Note: See also M.G.L. c. 148, §§ 26 A and 26G. 



904.5 Use Group I: An automatic fire suppression 
system shall be provided throughout all buildings of 
Use Group I. 

Note: See also M.G.L. c. 148, §§ 26A and 26G. 

904.6 Use Group R-l: An automatic fire 
suppression system shall be provided throughout all 
buildings or spaces of Use Group R-l in accordance 
with 780 CMR 906.2.1 or 906.2.2. 

904.7 Use Group R-2: An automatic fire 
suppression system shall be provided throughout all 
buildings with an occupancy in Use Group R-2 in 
accordance with 780 CMR 906.2.1 or 906.2.2. 

Note: See also M.G.L. c. 148, §§ 26A and 261. 

904.8 Windowless story: An automatic fire 
suppression system shall be provided throughout 
every story or basement of all buildings where there 
is not provided at least one of the following types of 
openings: 

1. An exterior stairway that conforms to the 
requirements of 780 CMR 1014.0, or an outside 
ramp that conforms to the requirements of 
780 CMR 1016.0, leading directly to grade in 
each 50 linear feet (15240 mm) or fraction thereof 
of exterior wall in the story or basement, on at 
least one side of the building. 

2. Openings entirely above the adjoining ground 
level totaling 20 square feet (1.9 m 2 ) in each 50 
linear feet (15240 mm) or fraction thereof of 
exterior wall in the story or basement, on at least 
one side of the building. Openings shall have a 
least dimension of not less than 22 inches (559 
mm), and shall have a minimum net clear opening 
of five square feet (0.5m 2 ). Access to such 
openings from the exterior shall be provided to 
the fire department and such openings shall be 
unobstructed to allow fire-fighting and rescue 
operations from the exterior. 

When openings in a story are provided on only 
one side and the opposite wall of such story is more 
than 75 feet (22860 mm) from such openings, the 
story shall be equipped throughout with an 
automatic sprinkler system, or openings as specified 
herein shall be provided on at least two sides of the 
exterior walls of the story. If any portion of a 
basement is located more than 75 feet (22860 mm) 
from the openings required in 780 CMR 904.0, the 
basement shall be provided with an automatic 
sprinkler system. 

Exception: Occupancies in Use Group R-3. 

904.9 Other required suppression systems: In 

addition to the requirements of 780 CMR 904.2 
through 904.8, automatic fire suppression systems 
for certain buildings and areas shall be provided in 
accordance with Table 904.9. 



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Table 904.9 
ADDITIONAL REQUIRED SUPPRESSION 

SYSTEMS (1) 



780 CMR Section 


Subject 


302.1.1 
402.10; 402.15.2 

403.2 
404.2 
408.3.1, 
408.4 
426.0 

780 CMR Section 


Specific occupancy areas 

Covered mall buildings 

High-rise buildings 

Atriums 

Public garages 

Fuel-dispensing areas !? 

Bulk Merchandizing/Warehouse 

Occupancies 
Subject 


411.7 
412.6 
413.4 
416.4 


Sound stages 

Stages and enclosed platforms 
Special amusement buildings 
HPM facilities 



419.3 Paint spray booths and storage 

rooms 

Open parking structures more than 
70 feet in height above the mean 
grade (M.G.L. c. 148, § 26A) 



507.1 


Unlimited area buildings 


1020.3 


Exit lobbies 


2806.4 


Drying rooms 


2807.6 


Waste and linen chutes and 




termination and incinerator 




rooms 


2808.4 


Refuse vaults 



Note (1) See also M.G.L. c. 148, §§ 26A, 26G, 26H, and 
261. 

780 CMR 905.0 SUPPRESSION SYSTEM 
AGENT COMPATIBILITY 

905.1 Agent compatibility: The extinguishing agent 
for each suppression system shall be compatible with 
the type of hazard and fire. Each fixed fire 
suppression system shall be of an approved type and 
shall be designed and installed in accordance with 
the requirements of 780 CMR. 

905.1.1 Special hazards: In rooms or buildings 
containing combustibles (such as aluminum 
powder, calcium carbide, calcium phosphide, 
metallic sodium and potassium, quick-lime, 
magnesium powder or sodium peroxide) that are 
incompatible with water as an extinguishing 
agent, other extinguishing agents shall be utilized. 

780 CMR 906.0 FIRE SPRINKLER SYSTEM 

906.1 General: Automatic sprinkler systems shall be 
approved and shall be designed and installed in 
accordance with the provisions of 780 CMR. 

906.2 Equipped throughout: Where the provisions 
of 780 CMR require that a building or portion 
thereof be equipped throughout with an automatic 
sprinkler system, the system shall be designed and 
installed in accordance with 780 CMR 906.2.1, 
906.2.2 or 906.2.3. 



Exception: Where water as an extinguishing 
agent is not compatible with the fire hazard (see 
780 CMR 905.1) or is prohibited by a law, statute 
or ordinance, the affected area shall be equipped 
with an approved automatic fire suppression 
system utilizing a suppression agent that is 
compatible with the fire hazard. 

906.2.1 NFiPA 13 systems: The system shall be 
designed and installed in accordance with NFiPA 
13 listed in Appendix A. 

906.2.2 NFiPA 13R systems: In buildings four 
stories or less in height, systems designed and 
installed in accordance with NFiPA 13R listed in 
Appendix A shall be permitted in Use Group 1-1 
buildings with not more than 16 occupants and in 
Use Group R buildings. 

906.23 NFiPA 13D systems: In Use Group R-3 
buildings with at least two-hour fireresistance 
rated fire separation assemblies between dwelling 
units, or in Use Group 1-1 buildings with not more 
than eight occupants, systems designed and 
installed in accordance with NfiPA 13D listed in 
Appendix A shall be permitted. 

9063 Design: Design documentation shall be in 
accordance with 780 CMR 903. 

906.4 Actuation: Water sprinkler systems shall be 
automatically actuated unless otherwise specifically 
provided for in 780 CMR. 

906.5 Sprinkler alarms: Approved audible and 
visual alarm devices shall be connected to every 
water sprinkler system. Such alarm devices shall be 
activated by water flow and shall be located in an 
approved location on the exterior of the building and 
throughout the building in accordance with the 
requirements of NFPA-72 listed mAppendixA. 

906.6 Water-control valve identification: All 

valves controlling water to fire protection systems 
shall be provided with permanently attached 
identification tags indicating the valves' function and 
what is controlled. 

906.7 Sprinkler riser: A sprinkler system riser 
which also serves as the wet standpipe riser in 
buildings required to have or having both systems, 
shall conform to 780 CMR 914.6. 

906.8 Signs: Where sprinkler control valves are 
located in a separate room or building, a sign shall 
be provided on the entrance door. The lettering shall 
be at least 254 inches (63.5 mm) in height and shall 
otherwise conform to 780 CMR 901 .6 and shall read 
"Sprinkler Control Valves." 

906.9 Acceptance tests: All sprinkler systems shall 
be tested in accordance with the applicable NFPA 



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Standards used for sprinkler system design and 
Installation and listed in Appendix A. 

906.9.1 Underground connections: Underground 
mains and lead-in connections shall be flushed 
and tested in accordance with NFiPA 13 and 24 
listed in Appendix A . 

906.9.2 Hydrostatic test: All sprinkler systems shall 
be tested hydrostatically in accordance with the 
applicable NFPA Standards listed in Appendix A. 

780 CMR 907.0 LIMITED AREA SPRINKLER 
SYSTEMS 

907.1 General: A limited area sprinkler system shall 
be of an approved type and shall be installed in 
accordance with the provisions of 780 CMR 907.0. 
Complete fire protection construction documents 
shall be provided. (See 780 CMR 903.0.) 

907.2 Where permitted: Where the provisions of 
780 CMR require the installation of a fire 
suppression system, and a water sprinkler 
extinguishing system is used with a limited number 
of sprinklers, a limited area sprinkler system that 
complies with the requirements of 780 CMR 907.0 
is permitted to be installed. 

907.2.1 Special occupancy areas: A limited area 
sprinkler system shall be permitted within special 
occupancy areas as designated in 780 CMR 4 or 
within specific occupancy areas as designated in 
780 CMR 302.1.1, provided that the area is 
enclosed within fire separation assemblies as 
required by 780 CMR, and 20 sprinklers or less 
are required to protect each separately enclosed 
area. Where nonfireresistance rated separation 
walls are permitted by Table 302.1.1 to enclose 
contiguous specific occupancy areas on one floor, 
the areas shall be considered to be one separately 
enclosed area for the purposes of determining the 
number of sprinklers based on the spacing 
limitations of NFPA 13 listed in Appendix A. 

907.2.2 Unenclosed floor openings, waste and 
linen chutes, and kitchen and hazardous 
exhaust systems: A limited area sprinkler system 
shall be permitted to protect unenclosed escalator 
floor openings that comply with 780 CMR 
907.2.2.1, chutes used for waste or linen collec- 
tion, commercial kitchen exhaust systems and 
duct systems that exhaust hazardous materials. 

907.2.2.1 Water curtain: The area of the floor 
opening shall not exceed twice the horizontal 
projected area of the escalator and the opening 
shall not connect more than four stories in 
occupancies in other than Use Groups B and M 
and the opening shall be protected by a draft 
curtain and a closed sprinkler water system 
conforming to NfiPA 13 listed in Appendix A. 

Note: Relative to escalator floor openings, 

also see 780 CMR 713.3. 



907.3 Design: Except as otherwise provided for in 
780 CMR 907.0, a limited area sprinkler system 
shall be designed and installed in accordance with 
780 CMR 906.0. 

907.4 Actuation: A limited area sprinkler system 
shall be automatically actuated. 

907.5 Sprinkler alarms: Alarms and alarm 
attachments shall be required and shall be located 
and installed in accordance with the requirements of 
780 CMR 906.5. 

907.6 Standpipe connection: The water supply for 
the limited area sprinkler system shall be from the 
building standpipe system where the building is 
equipped with a standpipe system that is sized for a 
500-gallon-per-minute (0.032 m Is) minimum flow 
and has an automatic water supply (see 780 CMR 
914.5). 

907.6.1 Domestic supply: Where limited area 
sprinkler systems are supplied from the domestic 
water system, the domestic water system shall be 
designed to support adequately the design flow of 
the largest number of sprinklers required to be 
hydraulically calculated by NFiPA 13 listed in 
Appendix A in any one of the enclosed areas plus 
the domestic demand. 

907.6.2 Cross connection: The potable water 
supply shall be protected against backflow in 
accordance with the requirements of the Plumbing 
and Gas Code (248 CMR), and the Department of 
Environmental Protection Regulations, 310 CMR 
as listed in Appendix A as well as any cross- 
connection protection criteria legally set forth by 
the water supplier/purveyor having local 
jurisdiction. 

907.63 Domestic connection: Shutoff valves 

shall not be permitted in the suppression system 

piping. Water supply shall be controlled by the 

riser control valve to the domestic water piping. 

Exception: Shutoff valves in the sprinkler 

system piping are permitted provided that such 

valves are supervised in accordance with 

780 CMR 923.0. 

907.7 Acceptance tests: All limited area sprinkler 
systems shall be tested as stipulated in 780 CMR 
906.9. 

780 CMR 908.0 WATER-SPRAY FIXED 
SYSTEMS 
908.1 General: Water-spray fixed systems for fire 
suppression shall be of an approved type and shall 
be installed in accordance with the provisions of 
780 CMR and NFiPA 15 listed in Appendix A. A 
water-spray fixed system is a system connected to a 
reliable source of water supply and equipped with 
normally open water-spray nozzles for specific 



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780 CMR 913.0 WET-CHEMICAL RANGE 
HOOD EXTINGUISHING SYSTEMS 

913.1 General: Wet-chemical extinguishing systems 
shall be installed in accordance with the provisions 
of 780 CMR 913.0, and the BOCA Mechanical Code 
and NFiPA 17A listed in Appendix A. The system 
shall bear the label of an approved agency and shall 
be installed in accordance with the manufacturer's 
installation instructions. A wet-chemical system is a 
solution of water and potassium-car-bonate-based 
chemical, potassium-acetate-based chemical or a 
combination thereof which forms the extinguishing 
agent. 

913.2 Design: The details of the system indicated on 
the fire protection construction documents shall 
include sufficient information and calculations on 
the amount of wet chemical; the size, length and 
arrangement of connected piping; and a description 
and location of nozzles so that the adequacy of the 
system can be determined. Information shall be 
submitted pertaining to the location and function of 
detecting devices, operating devices, auxiliary 
equipment and electrical circuitry, if used. Sufficient 
information shall be indicated to identify properly 
the apparatus and devices used. Any special features 
shall be adequately explained. (See 780 CMR 
903.0.) 

9133 Actuation: Wet-chemical extinguishing 
systems shall be automatically actuated and shall be 
provided with a manual means of actuation. 

913.4 Safety requirements: Where persons will be 
exposed to a wet-chemical discharge, warning signs 
and discharge alarms shall be provided. 

913.5 Acceptance tests: All wet-chemical 
extinguishing systems shall be tested in accordance 
with NFiPA 1 7 A listed in Appendix A . A completed 
system shall be tested by discharge of wet chemical 
in sufficient amounts to verify that the system is 
properly installed and functional. Tests shall include 
a check of the detection systems, the alarms and the 
releasing devices, including manual stations, fuel 
and power shutoff devices and other associated 
equipment. 

913.5.1 Discharge test: All systems shall be 
tested by a discharge of expellant gas through the 
piping and nozzles with observations being made 
of the flow of expellant gas through all nozzles as 
well as observing for leakage and continuity of 
piping with free unobstructed flow. 

780 CMR 914.0 STANDPIPE SYSTEMS 
914.1 General: Standpipe systems shall be designed, 
installed and maintained in accordance with the 
provisions of 780 CMR and NFPA-14 listed in 
Appendix A. Where standpipe systems are required 
by 780 CMR, such systems shall be automatic wet 



systems. Automatic dry and semi-automatic dry 
standpipe systems shall be permitted only in areas 
subject to freezing. Complete fire protection 
construction documents shall be provided. (See 
780 CMR 903.0.) 

914.2 Where required: Class m standpipe systems 
shall be installed where required by 780 CMR 
914.2.1 through 906.2.11 and. shall be located in 
accordance with the provisions of NFPA 14, listed in 
Appendix A. 

914.2.1 Use Group A: In all buildings or 
structures or portions thereof of Use Group A 
when: 

1 . Two or more stories in height of Use Group 
A-l, A-2, or A-3, and having an occupant load 
or more than 300; or, 

2. Three or more stories in height regardless 
of the area per floor; or; 

3. Having an auditorium seating over 500. 
Standpipes shall be located one on each side of 
the auditorium in each tier, one in each 
mezzanine, one in each tier of dressing rooms, 
and protecting each property, store and work 
room; or, 

4. Having a stage. Standpipes shall be located 
on each side of the stage. 

Such standpipes shall be not less that 2'/2-inch 
diameter, equipped with approved 154 inch hose 
station. 

914.2.2 Use Group B: In all buildings or 
structures or portions thereof of Use Group B 
when: 

1. Three or more stories in height, and more 
than 3,000 square feet in area per floor, or; 

2. Four or more stories in height regardless of 
the area per floor. 

914.2.3 Use Group E: In buildings or structures 
or portions thereof of Use Group E when three or 
more stories in height regardless of the area per 
floor or when having a stage or auditorium in 
accordance with 780 CMR 914.2.1(3) and 
914.2.1(4). 

914.2.4 Use Group F: In all buildings or 
structures or portions thereof of Use Group F 
when: 

1 . Three or more stories in height, and more 
than 3,000 square feet in area per floor, or; 

2. Four or more stories in height regardless of 
the area per floor. 

914.2.5 Use Group H: In all buildings or 
structures or portions thereof of Use Group H 
when: 

1 . Three or more stories in height, and more 
than 10,000 square feet in area per floor; or; 

2. Four or more stories in height, regardless of 
the area per floor. 



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914.2.6 Use Group I: In all buildings or 
structures or portions thereof of Use Group I, 
three or more stories in height, regardless of the 
area per floor. 

914.2.7 Use group M: In all buildings or 
structures or portions thereof of Use Group M 
when: 

1 . Three stories or more in height, and more 
than 3,000 square feet in area per floor, or; 

2. Four or more stories in height regardless of 
the area per floor, or; 

3. Classified as a covered mall building 
within the mall portions (see 780 CMR 4). 

4. Classified as a bulk/merchandising 
warehouse. (See 780 CMR 4.) 

914.2.8 Use Group R-l and R-2: In all buildings 
or structures or portions thereof of Use Group R-l 
and R-2 when: 

1 . Three or more stories in height and of Use 
Group R-l regardless of the area per floor; or; 

2. Three or more stories in height and more 
than 10,000 square feet in area per floor, or, 

3 . Four or more stories in height regardless of 
the area per floor. 

914.2.9 Use Group S: In all buildings or 
structures or portions thereof of Use Group S, 
other than public garages which shall conform to 
780 CMR 914.2.10 when: 

1. Three or more stories in height, or Use 
Group S-l, and more than 3,000 square feet in 
area per floor; or; 

2. Three or more stories in height, Use Group 
S-2, and more than 10,000 square feet in area 
per floor; or; 

3. Four or more stories in height of Use 
Groups S-l or S-2 regardless of the area per 
floor. 

914.2.10 Use Group U: In all buildings or 
structures or portions thereof of Use Group U 
when: 

1 . Three or more stories in height and more 
than 10,000 square feet in area per floor; or; 

2. Four or more stories in height regardless of 
the area per floor. 

914.2.11 Public Garages: In all Group I and 11 
public garages and open parking structures when: 

1 . More than 1 0,000 square feet in area per 
floor; or; 

2. More than 7,500 square feet in area per 
floor and more than one story in height; or; 

3. More than 5,000 square feet in area per 
floor, and more than two stories in height; or; 

4. More than three stories in height; or; 

5. Located in buildings where the upper 
stories are designed for other uses: or; 

6. When located in any story that is more than 
50% below grade. 



Exception: Standpipe systems can be 
"Class I Manual Dry Type" as defined by 
NFPA-14 for open parking structures less 
than 70' in height. 

9143 Standpipe system piping sizes: The riser 
piping, supply piping, and the water service piping 
shall be hydraulically sized in accordance with the 
provisions of NFPA-14 listed in Appendix A. 

Exception: The residual pressure(s) as noted in 
NFPA-14 are not required to be maintained in 
buildings less than 70 feet in height which are 
equipped throughout with an approved automatic 
fire suppression system. However the system 
shall be designed to accommodate the outlet 
pressures and water flows in accordance with 
NFPA 14 and inlet pressures consistent with local 
fire department equipment.. 

914.4 High-rise buildings: All buildings more than 
70 feet in height above the mean grade shall have 
each floor supplied by a minimum of two 
combination standpipe/sprinkler risers installed in 
accordance with the requirements of NFPA-14, 
listed in Appendix A. 

914.5 Outlets: Standpipe system outlets shall 
comply with the provisions for, Class HI Systems of 
NFPA-14 as listed in Appendix A. 

914.6 Acceptance Tests: All Standpipe systems 
shall be tested in accordance with NFPA listed in 
Appendix A. 

914.6.1 Underground Connections: 

Underground mains and lead-in connections shall 
be flushed and tested in accordance with NFPA 
14 and NFPA 24 listed in Appendix A. 

914.7 Standpipe system requirements for 
buildings under construction or demolition: 

914.7.1 General: Standpipes required by 780 
CMR 914.7 are to be either temporary or perma- 
nent in nature, with or without a water supply, 
provided, however, that such standpipes conform 
to the requirements of 780 CMR 914.0 as to 
number of risers, capacity, outlets and materials. 

914.7.2 Buildings under construction or 
demolition: Standpipe requirements for buildings 
under construction or demolition shall be in 
accordance with the provisions of 780 CMR 
3305.3 and NFPA 241 as listed in Appendix A. 

780 CMR 915.0 FERE DEPARTMENT 
CONNECTIONS 

915.1 Required: All required water fire- 
extinguishing and standpipe systems shall be 
provided with a fire department connection in 
accordance with the applicable NFPA standards. 
Standpipes in buildings under construction or 



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demolition shall conform to 780 CMR 3305.3 and 
NFPA 241 listed in Appendix A. 

Exceptions: 

1 . Limited area sprinkler systems supplied from 
the domestic water system. 

2. Where the local fire department approves a 
single connection for large diameter hose of at 
least four inches. 

3. An automatic sprinkler system with less than 
20 sprinklers. 

915.2 Connections: Fire department connections 
shall be arranged in such a manner that the 
attachment to any one water sprinkler connection 
will serve all sprinklers, and the attachment to any 
one standpipe connection will serve all standpipes 
within the building. 

915.3 Location: Fire department connections shall 
be located and shall be visible on a street front or in 
a location approved by the fire department. Such 
connections shall be located so that immediate 
access is provided to the fire department. Fire 
department connections shall not be obstructed by 
fences, brushes, trees, walls or any other similar 
object. 

915.4 Height: Fire department connections shall not 
be less than 18 inches (457 mm) and not more than 
42 inches (1067 mm) in elevation, measured from 
the ground level to the centerline of the inlets. 

915.5 Projection: Where the fire department 
connection will otherwise project beyond the 
property line or into the public way, a flush-type fire 
department connection shall be provided. 

915.6 Hose thread: Hose thread in the fire 
department connection shall be uniform with that 
used by the local fire department. 

915.7 Fittings: Fire department inlet connections 
shall be fitted with check valves, ball drip valves and 
plugs with chains or frangible caps. 

915.8 Signs: A metal sign with raised letters at least 
one inch (25 mm) in height shall be mounted on all 
fire department connections serving sprinklers or 
standpipes. Such signs shall read "Automatic 
Sprinklers" or "Standpipe," or both, as applicable. 

780 CMR 916.0 YARD HYDRANTS/ 
UNDERGROUND FDtE MAINS 
916.1 Fire hydrants: Fire hydrants and underground 
fire mains installed on private property shall be 
located and installed as directed by the fire 
department. Hydrants shall conform to the standards 
of the administrative authority of the jurisdiction and 
the fire department. Hydrants shall not be installed 
on a water main less than six inches in diameter. 



Standards of construction shall be in accordance 
with NFPA 24 as listed in Appendix A. 

780 CMR 917.0 FIRE PROTECTIVE 
SIGNALING SYSTEMS 

( Fire Alarm System ) 

917.1 General: Fire protective signaling systems 
shall be of an approved type and shall be installed in 
accordance with the provisions of 780 CMR and 
NFPA 72 listed in Appendix A. 

917.2 Fire Protection Construction documents: 

Where a fire protective signaling system is required 
by 780 CMR, the fire protection construction 
documents shall show the location and number of all 
alarm-initiating devices and alarm notification 
appliances, and shall provide a description of all 
equipment to be used, proposed zoning, a list of 
auxiliary control functions (i.e., elevator capture), 
location of the control panel(s) and annunciator(s), 
and a complete sequence of operation for the system. 
(Also see 780 CMR 903.0) 

917.3 Approval: All devices, combinations of 
devices, appliances and equipment shall be approved 
for the fire protective signaling purpose for which 
such equipment is used. 

917.4 Where required: A fire protective signaling 
system shall be installed and maintained in full 
operating condition in the locations described in 
780 CMR 917.4.1 through 917.4.6. 

917.4.1 Use Group A or E: A fire protective 
signaling system shall be installed and maintained 
in all occupancies in Use Group A or E. 

917.4.2 Use Group B: A fire protective signaling 
system shall be installed and maintained in all 
occupancies in Use Group B where such buildings 
have occupied floors which are two or more 
stories above the lowest level of exit discharge or 
which have floors two or more stories below the 
highest level of exit discharge. 

917.43 Use Group H: A fire protective signaling 
system shall be installed and maintained in all 
occupancies in Use Groups H. 

917.4.4 Use Group I: A fire protective signaling 
system shall be installed and maintained in all 
occupancies in Use Group I. 

917.4.5 Use Group R-l: A fire protective 
signaling system shall be installed and maintained 
in all occupancies in Use Group R-l. 

917.4.6 Use Group R-2: A fire protective 
signaling system shall be installed and maintained 
in all occupancies in Use Group R-2 containing 
13 or more dwelling units or where any dwelling 
unit is located more than three stories above the 
lowest level of exit discharge or more than one 



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THE MASSACHUSETTS STATE BUILDING CODE 



story below the highest level of exit discharge of 
exits serving the dwelling unit. 

917.5 Location: Manual fire alarm boxes shall be 
located not more than five feet (1524 mm) from the 
entrance to each exit. Manual fire alarm boxes shall 
be located in each story including basements. In 
buildings of use group A where a stage is provided, 
a manual fire alarm box shall be located next to the 
lighting control panel. 

Exception: 

1. In buildings of use group A, assembly 
occupancy, and where approved by the local fire 
department, manual fire alarm boxes may be 
omitted at exits and any other required locations, 
but shall be provided at constantly attended 
locations such as ticket booths, refreshment 
facilities, bars, etc. Where the building official 
determines that it is impractical to have a 
constantly attended location in an assembly 
occupancy other than a theater, manual fire alarm 
boxes shall be provided at each required building 
exit. 

2. Manual fire alarm boxes are not required in an 
occupancy in Use Group B where the height of 
the building is 70 feet or less above the lowest 
level of fire department vehicle access and the 
building is equipped throughout with an 
automatic sprinkler system, and/or an automatic 
fire detection system or combination thereof, in 
accordance with 780 CMR 906.0 and 780 CMR 
918.0. 

917.5.1 Manual fire alarm boxes: The height of 
the manual fire alarm boxes shall be a minimum 
of 42 inches (1067 mm) and a maximum of 54 
inches (1372 mm) measured vertically, from the 
floor level to the activating handle or lever of the 
box. Manual fire alarm boxes shall be red in 
color. In all occupancies in Use Group 1-3, the 
manual fire alarm boxes shall be permitted to be 
locked in areas where staff is present whenever 
such areas are occupied and keys are readily 
available to unlock the boxes, or the boxes shall 
be located in a manned staff location which has 
direct supervision of the sleeping area. 

Exception: Where 521 CMR, Architectural 
Access Board regulations apply, manual fire 
alarm box height shall be as prescribed in 
521 CMR. 

917.6 Power supply: The primary and secondary 
power supply for the fire protective signaling system 
shall be provided in accordance with NFPA 72 listed 
in Appendix A. 

917.7 Wiring: All wiring shall conform to the 
requirements of NFPA 72 and 527 CMR 12.00: 
Massachusetts Electrical Code listed in Appendix A. 
Wireless systems utilizing radio frequency 
transmitting devices shall comply with the special 



requirements for supervision of low-power wireless 
systems in NFPA 72 listed in Appendix A. 

917.7.1 Activation: The alarm notification 
appliances shall be automatically activated by all 
of the following where provided: 

1 . Smoke detectors, other than single- and 
multiple-station smoke detectors, as required 
by 780 CMR 919.0; 

2. Sprinkler water-flow devices; 

3. Manual fire alarm boxes; and 

4 Other approved types of automatic fire 
detection devices, extinguishing, or 
suppression systems. 
Exceptions: 

1 . Smoke detectors in an occupancy in Use 
Group 1-3 are permitted to actuate an audible 
alarm-indicating appliance at a constantly 
attended location and are not required to 
activate a general alarm. 

2. Audible alarms in buildings of Use 
Group A with an occupant load greater than 
300 persons shall sound only in a constantly 
attended receiving station within the 
building for purposes of initiating emergen- 
cy action. Occupant notification shall be by 
means of either voice or prerecorded 
message announcement initiated by the 
person in the constantly attended receiving 
station and in accordance with 780 CMR 
917.9. In buildings of Use Group A utilizing 
reduced lighting levels on a regular basis, 
lights providing normal lighting levels shall 
be activated simultaneously with the 
beginning of the voice or prerecorded 
message announcement. Where the building 
official determines that it is impractical to 
have a constantly attended location in an 
assembly occupancy the fire alarm system 
shall be arranged to automatically provide 
prerecorded evacuation instructions. 

3. For mixed use group occupancies that 
contain an A use group the use group A area 
shall be in accordance with 780 CMR 
917.7.1 exception 2. 

917.7.1.1 Length of evacuation signal: 
Automatic deactivation of audible and visible 
alarms shall not be allowed. 
Exception: Automatic deactivation of 
audible alarms after a period of operation of 
15 minutes shall be permitted when 
approved by the local fire department. 
Automatic deactivation of audible alarms 
shall only be permitted when the fire alarm 
system is supervised in accordance with 
780 CMR 923.2 or by an approved auxiliary 
fire alarm system in accordance with NFPA 
72. 

917.7.2 Presignal or positive alarm sequence 
system: Presignal or positive alarm sequence 



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FIRE PROTECTION SYSTEMS 



systems shall not be installed unless approved by 
the code official and by the local fire department. 
Where a presignal or positive alarm sequence 
system is installed, 24-hour supervision by 
trained personnel shall be provided at a location 
approved by the local fire department, in order 
that the alarm signal can be actuated in the event 
of fire or other emergency. 

917.73 Zones: Each floor shall be zoned 
separately and a zone shall not exceed 20,000 
square feet (1860 m 2 ). The length of any zone 
shall not exceed 300 feet (91440 mm) in any 
direction. A zoning indicator panel and the 
associated controls shall be provided in a location 
approved by the local fire department. Where 
individually addressable alarm initiating devices 
are used, a single circuit ( or pathway ) shall not 
exceed the above size limitations unless the 
circuit is a Class A circuit, and the style and 
device loading meets the requirements for 
proprietary systems as listed in NFPA 72. Where 
individually addressable alarm initiating devices 
are logically combined into groups for 
annunciation purposes, the above zone size 
limitations shall apply to the group. The local fire 
department shall approve all zone and point 
descriptions. The visual zone indication shall lock 
in until the system is reset and shall not be 
canceled by the operation of an audible alarm - 
silencing switch. In buildings that have floors 
located more than 70 feet above mean grade, a 
separate zone by floor shall be provided for the 
following types of alarm-initiating devices where 
provided: 

1. Smoke detectors; 

2. Sprinkler water-flow devices; 

3. Manual fire alarm boxes; and 

4. Other approved types of automatic fire 
detection devices, extinguishing, or 
suppression systems. 

Exceptions: 

1 . Automatic sprinkler system zones shall not 
exceed the area permitted by NFPA 1 3 listed in 
Appendix A. 

2. Duct type smoke detectors shall be 
separately identified with a remote test/ 
indicator station. The location of the remote 
test/indicator shall be approved by the local 
fire department. 

917.8 Alarm notification appliances: Alarm 
notification appliances of the approved type shall be 
provided. 

917.8.1 Visible alarms: Visible alarm notification 
appliances shall be provided in accordance with 
NFPA 72 and 521 CMR in public and common 
areas of all buildings and areas of buildings 
housing the hearing impaired and where required 
by 521 CMR. In occupancies in Use Groups 1-1 
and R-l, all required accessible sleeping rooms 



and suites plus an additional number of sleeping 
rooms or suites in accordance with Table 917.8.1 
shall, be provided with a visible alarm notification 
appliance, activated by both the in-room smoke 
detector and the building fire protective signaling 
system. In hospital intensive care units, special 
care units and operating rooms, the audible signal 
need not be sounded; however a visual alarm shall 
be displayed with an approved device. 

Table 917.8.1 
VISIBLE AND AUDIBLE ALARMS 



Number of sleeping 
rooms or suites 


Sleeping rooms or suites with 
visible and audible alarms 


6 to 25 
26 to 50 




1 

2 


51 to 75 
76 to 100 




3 
4 


101 to 150 
151 to 200 
201 to 300 




5 
6 
7 


301 to 400 
401 to 500 




8 
9 


501 to 1,000 
1,001 and over 


20 plus 


2% of total 
1 for each 100 over 
1.000 



917.8.2 Audible alarms: Audible alarm 
notification appliances shall be provided and shall 
sound a distinctive sound which shall not be used 
for any purpose other than that of a fire alarm. 
The audible alarm notification appliances shall 
provide a sound pressure level of 15 dBA above 
the average ambient or 5 dBA above the maxi- 
mum sound level having a duration of at least 60 
seconds ( whichever is greater ) sound level in 
every occupied space within the building. The 
minimum sound pressure levels shall be: 70 dBA 
in occupancies in Use Groups R and 1-1; 90 dBA 
in mechanical equipment rooms; and 60 dBA in 
all other use groups. The maximum sound 
pressure level for audible alarm notification 
appliances shall be 120 dBA at the minimum 
hearing distance from the audible appliance. 
917.8.2.1 All audible evacuation signals shall 
have a synchronized three - pulse temporal 
pattern in accordance with NFPA 72. 

917.9 Voice/alarm signaling system: A voice/alarm 
signaling system shall be provided where required 
by other sections of 780 CMR. When activated in 
accordance with 780 CMR 917.7.1, the voice/alarm 
signaling system shall automatically sound an alert 
signal to all occupants within the building on a 
general or selective basis to the following terminal 
areas: elevators, elevator lobbies, corridors, exit 
stairways, rooms and tenant spaces exceeding 1,000 
square feet (93 m 2 ) in area; dwelling units in 
occupancies in Use Group R-2; and guestrooms or 
suites in occupancies in Use Group R-l. The fire 
command station shall contain controls to transmit 



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THE MASSACHUSETTS STATE BUILDING CODE 



manually an evacuation signal and voice instructions 
on a selective and all-call basis to the terminal areas 
indicated herein. The voice/alarm system shall be 
designed and installed in accordance with the 
provisions of 780 CMR, 527 CMR and NFPA 72 
listed in Appendix A. 

Exception: A distinctive signal in lieu of a voice 
alarm is permitted in an occupancy in Use Group 
ForS. 

917.9.1 The sequence of operation of the voice 
alarm signaling system shall be as follows: 

1 . Sound an alert (pre-signal) tone (the alert 
tone shall be a 900 hertz tone pulsed to 
produce one round of code 4 at approximately 
one second intervals. 

2. Activate the recorded message regarding 
the evacuation procedure. The alarm and com- 
munications system shall provide a pre-record- 
ed message to all required areas. The message 
shall contain the following information. " 
attention please. The signal tone you have just 
head indicated a report of an emergency in this 
building. If your floor evacuation signal sounds 
after this message, walk to the nearest stairway 
and leave the floor. While the report is being 
verified, occupants on other floors should 
await further instructions." 

This message shall be transmitted three 
times. 

A female voice shall be used for this 
message. 

3. Activate the evacuation signal on the floor 
of incident and the next floor above and below 
(the evacuation signal shall be in accordance 
with 780 CMR 917.8.2.1 

917.10 Acceptance tests: Upon completion of the 
fire protective signaling system, all alarm 
notification devices and circuits, alarm indicating 
appliances and circuits, supervisory-signal initiating 
devices and circuits, signaling line circuits, and 
primary and secondary power supplies shall be 
subjected to a 100% acceptance test in accordance 
with NFPA 72 listed in ,4/jp«u«x/i and 780 CMR 
903.0. 

780 CMR 918.0 AUTOMATIC FIRE 

DETECTION SYSTEMS 

(FIRE ALARM SYSTEMS) 

918.1 General: Automatic fire detection systems 
shall be of an approved type and shall be installed in 
accordance with the provisions of 780 CMR and 
NFPA 72 listed in Appendix A. 

918.2 Fire Protection Construction documents: 

Where an automatic fire detection system is required 



by 780 CMR, the fire protection construction 
documents shall show the location and number of all 
automatic fire detectors with specifications of the 
type of fire detector, proposed zoning and a 
complete sequence of operation for the system. The 
system shall be installed in accordance with 
780 CMR 918.0 and shall be part of and be subject 
to the requirements of a fire protective signaling 
system specified in 780 CMR 917.0. (Also see 
780 CMR 903.0) 

9183 Approval: All devices, combinations of 
devices, appliances and equipment shall be approved 
for the fire signaling purpose for which such 
equipment is used. The automatic fire detectors 
shall be smoke detectors, except an approved 
alternative type of detector shall be installed in 
spaces such as boiler rooms where, during normal 
operation, products of combustion are present in 
sufficient quantity to actuate a smoke detector. 

918.4 Where required: An automatic fire detection 
system shall be installed and maintained in full 
operating condition in the locations described in 
780 CMR 918.4.1 through 918.4.7. 

918.4.1 Use Group A-4: An automatic fire 
detection system shall be installed in all 
occupancies of use group A-4. 

918.4.2 Use Group E: An automatic fire 
detection system shall be installed in all 
occupancies of use group E. 

918.43 Use Group 1-1: An automatic fire 
detection system shall be installed and maintained 
in all occupancies in Use Group 1-1. 

918.4.4 Use Group 1-2: An automatic fire 
detection system shall be installed and maintained 
in all occupancies in Use Group 1-2. 

Exception: Occupancies that are equipped 
throughout with an automatic sprinkler system 
in accordance with 780 CMR 906.0 and that 
comply with 780 CMR 409.0. 

918.4.5 Use Group 1-3: An automatic fire 
detection system shall be installed and maintained 
in all resident housing areas of Use Group 1-3. 
Smoke detectors shall be arranged and positioned 
to prevent damage or tampering provided that the 
function and speed of detecting a fire is equivalent 
to that provided by the spacing and arrangement 
requirements of NFPA 72 listed in Appendix A. 

918.4.6 Use Group R-l: An automatic fire 
detection system shall be installed and maintained 
throughout all occupancies in Use Group R-l and 
in accordance with Table 918. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

FIRE PROTECTION SYSTEMS 





TABLE 918 
RESIDENTIAL FIRE PROTECTION 


REQUIREMENTS 


Use 
Group 


Number 
ofUnits 


Unit Occupant 
Protection 


Other Occupant 
Protection 


Standby 
Power 


Manual 
Stations 


Zoned 


Provision for Fire 
Department Notification 


R-3 


lor 2 


Yes 
919.3.2 


Note a. 


Yes 
919.5 


N.A. 


N.A. 


N.A. 


R-l 


3 to 12 


Yes 
919.3.1 


Yes 
918.4.6 


Yes 
917.6 


Yes 

917.4.5 


N.A 


N.A 


R-2 


3 to 12 


Yes 
919.3.2 


Yes 
918.4.7 


Yes 
919.5 


Yes 
917.4.6 


N.A. 


N.A 


R-l 


13 or more 


Yes 

919.3.1 


Yes 
918.4.6 


Yes 
917.6 


Yes 

917.4.5 


Yes 
917.7.3 


Yes 

923.2 


R-2 


13 or more 


Yes 

919.3.2 


Yes 

918.4.7 


Yes 
919.5 


Yes 

917.4.6 


Yes 

917.7.3 


Yes 
923.2 



Note a: Where common areas exist. 



Exceptions: 

1. An automatic fire detection system is not 
required in buildings that do not have interior 
corridors serving guestrooms or dwelling units 
and where all guestrooms or dwelling units 
have a means of egress door opening directly 
to an exterior exit access which leads directly 
to the exits. 

2. System smoke detectors are not required in 
guestrooms or dwelling units provided that the 
single-station detectors required by 780 CMR 
919.3.1 are connected to the emergency 
electrical system and are annunciated by 
guestroom or dwelling unit at a constantly 
attended location from which the fire 
protective signaling system is capable of being 
manually activated. 

3. A system heat detector shall be required 
within each guest room or dwelling unit 
located not more than six feet from each door 
way that leads to an interior corridor or exit. 
System heat detectors shall not be required 
where the guestroom or dwelling unit is 
equipped with residential sprinklers that when 
activated will activate the fire protective 
signaling system. 

918.4.7 Use Group R-2: An automatic fire 
detection system shall be installed and maintained 
throughout all occupancies in use group R-2 and 
in accordance with table 918. 
Exceptions: 

1. An automatic fire detection system is not 
required in buildings that do not have interior 
corridors serving guestrooms or dwelling units 
and where all guestrooms or dwelling units 
have a means of egress door opening directly 
to an exterior exit access which leads directly 
to the exits. 

2. System smoke detectors are not required in 
guestrooms or dwelling units! 

3. A system heat detector shall be required 
within each guest room or dwelling unit 
located not more than six feet from each door 
way that leads to an interior corridor or exit. 
System heat detectors shall not be required 



where the guestroom or dwelling unit is 
equipped with residential sprinklers that, when 
activated, will activate the fire protective 
signaling system. 

918.5 Sprinklered buildings exception: Buildings 
equipped throughout with an automatic sprinkler 
system in accordance with 780 CMR 906.2.1 or 
780 CMR 906.2.2 are not required to be equipped 
with an automatic fire detection system, but are 
required to be equipped with a fire protective 
signaling system that conforms to 780 CMR 917.0. 
This exception does not apply to Use Groups I, R-l, 
R-2 , to high-hazard use groups in accordance with 
780 CMR 417.5.3, to special amusement buildings 
in accordance with 780 CMR 413.0, or to single- 
station smoke detectors as required in 780 CMR 
919.3. 

918.6 Zones: Zoning shall be provided in 
accordance with 780 CMR 917.7.3. 

918.7 Alarm verification: Alarms activated by 
smoke detectors required by 780 CMR 918.0 shall 
be activated by a single smoke detector monitored 
by an alarm verification zone or an approved 
equivalent method. 

918.8 Local control functions: Automatic fire 
detectors utilized for the purpose of performing local 
control functions shall be a part of a fire protective 
signaling system. The detector shall, upon 
actuation, perform the intended^iinction and activate 
the alarm notification devices or activate a visible 
and audible supervisory signal at a constantly 
attended location. 

Exception: In buildings not required to be 
equipped with a fire protective signaling system, 
the automatic fire detector shall be powered by 
normal electrical service and, upon actuation, 
perform the intended function. The detectors 
shall be located in accordance with NFPA 72 
listed in Appendix A. This exception dees not 
apply to smoke detectors required for elevator 
recall. 



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THE MASSACHUSETTS STATE BUILDING CODE 



918.9 Access: Access shall be provided to each 
detector for periodic inspection, maintenance and 
testing. 

780 CMR 919.0 SINGLE- AND MULTIPLE- 
STATION SMOKE DETECTORS 

919.1 General: Single- and multiple-station smoke 
detectors shall be of an approved type and shall be 
installed in accordance with the provisions of 
780 CMR and NFPA 72 listed in Appendix A. 

919.1.1 A control and associated equipment, 
single or multiple station alarm devices or any 
combination thereof shall be permitted to be used 
as a household fire warning system provided that 
the requirements of NFPA 72 Chapter 2 are met. 

919.2 Fire Protection Construction documents: 

Where single- and multiple station smoke detectors 
are required by 780 CMR, the fire protection 
construction documents shall show the location and 
number with specifications of the type of detector. 
(Also see 780 CMR 903.0.) 

9193 Where required: Single and multiple station 
smoke detectors or household fire warning systems 
shall be installed and maintained in full operating 
condition in the locations described in 780 CMR 
919.3.1 through 919.3.3. Any smoke detector 
located within 20 feet of a kitchen or within 20 feet 
of a bathroom containing a tub or shower shall be a 
photo electric type smoke detector. 

9193.1 Use Group R-l: Single and multiple 
station smoke detectors or household fire warning 
systems shall be installed and maintained in the 
following locations in Use Group R- 1 : 

1 . In all sleeping areas; 

2. In every room or hallway in the path of the 
means of egress from the sleeping area to the 
door leading from the guestroom or suite; and 

3 . In each story within the guestroom or suite, 
including basements. 

Exception: For suites or guestrooms or 
dwelling unit with split levels and without 
an intervening door between the adjacent 
levels, a smoke detector installed on the 
upper level shall suffice for the adjacent 
lower level provided that the lower level is 
less than one full story below the upper 
level. 

9193.2 Use Groups R-2, R-3, R-4 and R-5: 

Single and multiple station smoke detectors or 
household fire warning systems shall be installed 
and maintained in all occupancies in Use Groups 
R-2, R-3, R-4 and R-5 at the following locations: 

1. In the immediate vicinity of bedrooms; 

2. In all bedrooms; and 

3. In each story within a dwelling unit, 
including basements. 



4. In residential units 1200 square feet or more 
in area an additional automatic fire detector 
shall be provided for each 1200 square feet of 
area or part thereof. 

Exceptions: 

1 . In dwelling units with split levels and 
without an intervening door between the 
adjacent levels, a smoke detector installed 
on the upper level shall suffice for the 
adjacent lower level provided that the lower 
level is less than one full story below the 
upper level. 

2. In buildings equipped throughout with 
an automatic sprinkler system installed in 
accordance with 780 CMR 906.2.1, 906.2.2 
or 906.2.3, smoke detectors are not required 
in bedrooms where the bedrooms are 
equipped with residential sprinklers. 

91933 Use Group 1-1: Single and multiple 

station smoke detectors or household fire warning 

systems shall be installed and maintained in all 

sleeping areas in occupancies in Use Group I- 1 . 

Exception: Where the building is equipped 

throughout with an automatic detection system 

in accordance with 780 CMR 918.4. 

919.4 Interconnection: Where more than one 
detector is required to be installed within an 
individual dwelling unit in an occupancy in Use 
Group R-2 , R-3 or R4, or within an individual 
guestroom or suite in an occupancy in Use Group R- 
1, the detectors shall be wired in such a manner that 
the actuation of one alarm will actuate all of the 
alarms in the individual unit. 

919.5 Battery backup: In addition to the required 
AC primary power source, required smoke detectors 
in occupancies in Use Groups R-2, R-3, R-4, R-5 
and 1-1 shall receive power from a battery when the 
AC primary power source is interrupted. 

Exception: In buildings equipped throughout with 
an automatic sprinkler system installed in 
accordance with 780 CMR 906.2.1, 906.2.2 or 
906.2.3. 

919.6 Acceptance testing: When the installation of 
the detectors is complete, each detector - and all 
interconnecting wiring for multiple-station detectors 
shall be subject to a 100% acceptance test in 
accordance with NFPA 72 listed in Appendix A 

780 CMR 920.0 FIRE EXTINGUISHERS 
920.1 Approval: Portable fire extinguishers shall 
bear the label of an approved agency, be of an 
approved type and be installed in a location visible 
and available to the occupants. 



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FIRE PROTECTION SYSTEMS 



920.2 Where required: A portable fire extinguisher 
shall be installed in the following locations in 
accordance withNFiPA 10 listed in Appendix A: 

1 . In all occupancies in Use Group A-l , A-2, A- 
3,B,E,I-2,M,R-lorH; 

2. In all areas containing commercial kitchen 
exhaust hood systems; 

3. In all areas where fuel is dispensed; 

4. In all areas where aflammable or combustible 
liquid is used in the operation of spraying, coating 
or dipping; 

5. In all occupancies in Use Group 1-3 at staff 
locations. Access to portable extinguishers shall 
be permitted to be locked; 

6. On each completed floor of buildings under 
construction, other than occupancies in Use 
Group R-3. 

7. In any laboratory, shop or other room 
occupied for similar purposes; and 

8. Where required by the fire prevention code 
listed in Appendix A. 

780 CMR 921.0 SMOKE CONTROL 
SYSTEMS 

921.1 General: Smoke control systems required by 
780 CMR shall conform to the provisions of 
780 CMR 921.0 

921.2 Design criteria: The smoke control system 
shall be designed to keep the smoke layer interface 
above the highest of either the highest unprotected 
opening to adjoining spaces, or six feet (1829 mm) 
above the highest floor level of exit access open to 
the atrium for a period of 20 minutes. The limiting 
height for the smoke layer interface for stages shall 
be in accordance with 780 CMR 412.3.8.2. The 
limiting height of the smoke interface above the 
floor of the space required to be provided with 
smoke control is Z CT . Provisions shall also be made 
to provide for smoke removal from the space at a 
rate of not less than two air changes per hour by 
means of natural or mechanical ventilation. 

921.2.1 Passive system: Active smoke control is 
not required where it is shown that the smoke 
interface level requirement will be met without 
operating smoke exhaust. 

921 .2.1.1 Regular spaces: For spaces with flat 
ceilings, a constant horizontal cross-sectional 
area above the smoke layer interface, and an 
A/H 2 ratio between 0.9 and 14, the following 
equation shall be used to estimate the height of 
the interface at 20 minutes 



Z=0.67H-Q.2iH id ^ 
A 



Z = Height from floor to the smoke interface 

(feet). 
t = Time for interface to descent to Z; Use 

1,200 seconds. 
H= Height of the space required to be 

provided with smoke control; floor to flat 

ceiling (feet). 
O = Steady state heat release rate; Use 4,400 

Btu/sec. where the primary use group is 

M, S-l or F-l. Otherwise use 2,000 

Btu/sec. 
A = Horizontal cross-sectional area of the 

above ceiling space being filled (square 

feet). Maximum A to be used shall be: A= 

14 if 2 . 
921.2.1.2 Irregular spaces: For spaces with 
sloped or irregular ceilings, A/H 2 ratios outside 
the specified range, or varying cross sections, 
the filling time shall be determined using 
numerical integration from the ceiling to the 
critical smoke interface. The following 
equations shall be used to determine the rate of 
smoke production: 

Where the interface level is above the 
limiting elevation (z,)use: 



17.6Q C 1/3 Z : 



3.36Q 



Where the interface level is below the 
limiting elevation (z, ) use: 



V 



16.64Q C 3/5 Z 



where: 

V = The volumetric rate of smoke production 
(cubic feet per minute). 

z, = Limiting elevation (ft) = 0.533Q C 2/5 

Qc = The convective portion of the heat 
release rate shall be estimated as 70 
percent of the total heat release rate, Q. 

921.2.2 Mechanical systems: Where the smoke 
filling predicted in 780 CMR 921.2.1 does not 
meet the design criteria of 780 CMR 921.2, 
mechanical exhaust shall be provided to maintain 
these conditions. 

921.2.2.1 Exhaust quantities: Sufficient 
mechanical exhaust shall be provided to 
maintain the smoke layer interface at or above 
the critical elevation for the 20-minute period. 
The volumetric rate of smoke production (V) 
shall be determined by the equations in 
780 CMR 921.2.1.2. If the rate of smoke 
exhaust is less than the rate of smoke 
production, the minimum exhaust rate to be 
supplied for smoke control shall be determined 
in accordance with Table 92 1 .2.2. 1 . 



where: 



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THE MASSACHUSETTS STATE BUILDING CODE 



Table 921.2.2.1 

MINIMUM EXHAUST RATE ADJUSTMENT 

FACTOR 3 





*o 


2JH 






Ve/V 








0.25 


0.35 


0.50 


0.70 


0.85 


0.95 


0.2 


1.12 


1.19 


1.30 


1.55 


1.89 


2.49 


0.3 


1.14 


1.2f 


1.35 


1.63 


2.05 


2.78 


0.4 


1.16 


124 


1.40 


1.72 


224 


3.15 


0.5 


1.17 


1.28 


1.45 


1.84 


2.48 


3.57 


0.6 


120 


1.32 


1.52 


2.00 


2.78 


4.11 


0.7 


1.23 


1.36 


1.61 


2.20 


3.17 


4.98 


0.8 


1.26 


1.41 


1.71 


2.46 


3.71 


6.25 



Note a. Notation: 

Z= Design height of smoke layer interface above fire 

source. 
H = Ceiling height above fire source. 
t = Time for smoke layer interface to descend to Z(with 

exhaust) (seconds). 
t = Value of t in absence of smoke exhaust (see 

780 CMR 92 1 .2. 1 . 1 or 92 1 .2. 1 .2) (seconds). 
V e = Smoke control exhaust rate (minus any airflow into 

the smoke layer other than that from the plume). 
V= Volumetric smoke production rate (from the 

equations in 780 CMR 92 1 .2. 1 .2). 

921.2.3 Operation: The smoke control system 
shall be a dedicated system or shall be integrated 
with the mechanical ventilation system of the 
building. Operation of the smoke control system 
shall automatically shut down all systems and 
devices which interfere with the effective 
operation of the smoke control system. Where the 
mechanical ventilation .system is designed for 
smoke control, the return air shall be moved 
directly to the outside without recirculation to 
other areas of the building. 

921.2.4 Alternative systems: An engineered 
design which will achieve the same level of 
smoke control as described in 780 CMR 921 is 
permitted in lieu of these requirements and 
otherwise in conformance with the requirements 
of 780 CMR 903.2.1. 

9213 Smoke removal: Provisions shall be made to 
provide ventilation at a rate of at least two air 
changes per hour from the space required to be 
provided with smoke control. This ventilation shall 
be through openable vents, separate mechanical ex- 
haust, or through the building mechanical ventilation 
system. The exhaust inlets shall be located a mini- 
mum of six feet (1829 mm) above any exit access 
walkway and above any openings into adjoining 
spaces. The smoke removal system shall be activated 
by manual controls provided for fire department use 
unless it is part of the smoke control system. 

921.4 Activation: The smoke control system shall 
be activated by actuation of the following: 

/. Automatic sprinkler system; 

2. Smoke detectors required by 780 CMR 921 

that comply with NFPA 72 listed in Appendix A; 

and 



3. Manual controls provided for fire department 
use. 

Note: The smoke control system shall not be 
activated by a manual fire alarm system. 

921.4.1 Manual control: Manual controls shall 
be provided at a location approved by the fire 
department. 

921.4.2 Smoke detector activation: Where the 
height of the ceiling of the space required to be 
provided with smoke control exceeds 30 feet 
(9144 mm) above the floor of the space, approved 
smoke detectors shall be provided to detect smoke 
above the highest floor open to an atrium or at the 
highest point of another space required to be 
provided with smoke control. The installation of 
smoke detectors shall comply with 780 CMR 
918.0. 

921.5 Standby power: All equipment required to 
provide smoke control in floor openings connecting 
three or more stories and stage areas in accordance 
with 780 CMR 412.3.8.2 shall be equipped with a 
standby source of power that complies with 
527 CMR 12.00 as listed in Appendix A. 

921.6 Acceptance: Any required smoke control 
design that requires operation of mechanical 
equipment shall be functionally tested in accordance 
with 780 CMR 921.6.2 until proper operation of all 
required mechanical equipment and controls is 
demonstrated. 

921.6.1 System operation report: Prior to 
acceptance testing, a report of the required system 
operations shall be provided to the code official. 
(NOTE: also see 780 CMR 903. 1.1.1. a., b. and c. 
The following items shall be included in the 
report if part of the required system: 

1. Identify type(s) of smoke control activation 
signal(s), such as sprinkler waterflow, smoke 
detection, manual, etc., and associated smoke 
control system operation(s) that are activated 
by the signals. 

2. Identify building area(s) where maximum 
mechanical exhaust to the outside is 
implemented and supply air is not provided. 

3. Identify building area(s) where maximum 
air supply is implemented and exhaust to the 
outside is not provided. 

4. Identify fan(s) which shall be "On" as 
required to implement the smoke control 
system. If multiple speed fans are used, the 
capacity at which the fans shall operate in the 
smoke control mode shall be identified. 

5. Identify fan(s) which shall be "Off' as re- 
quired to implement the smoke control system. 

6. Identify dampens) which shall be "Open" 
to implement the smoke control system. 

7. Identify dampens) which shall be "Closed" 
to implement the smoke control system. 



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FIRE PROTECTION SYSTEMS 



8. Identify other functions required to 
implement the smoke control system. 

9. Identify building areas with smoke and 
heat vents and method of operation of vents. 

10. If required, identify the type(s) of standby 
power and the equipment that is served. 

921.6.2 Testing procedures: The acceptance test 
procedure shall be approved. Acceptance testing 
shall be conducted in the presence of the Building 
official and fire official or their designees or shall 
include documentation indicating that all mechanical 
equipment, control sequences, devices and 
components have been operationally tested and are 
functioning properly in accordance with the system 
operation report. Such documentation provided by 
a registered professional engineer or other legally 
recognized professional (M.G.L. c. 112, § 81R). All 
documentation from operational testing shall be 
available for inspection. Acceptance testing shall 
include the following: 

1. Prior to beginning acceptance testing, all 
building smoke control equipment shall be 
placed in the normal operating mode. 

2. Acceptance testing shall demonstrate that 
each initiating device, fan, damper and other 
required equipment is operational and performs 
to the limits and capacity required. 

3. Acceptance testing shall demonstrate that 
correct control outputs are produced for a 
given control input for each control sequence 
specified by the system operation report. 

4. If standby power is required for the 
operation of the smoke control system, 
acceptance tests shall be conducted while on 
both normal building power and standby 
power. 

5. Opening of smoke/heat vents shall be 
demonstrated if the vent is capable of being 
opened in a manner that does not require 
destructive testing. 



921.7 Elevators: Except when otherwise required 
by 524 CMR, where buildings are equipped with a 
mechanical smoke control system that will restrict 
smoke and hot gases from entering the elevator shaft 
in the fire floor, hoistway venting is not required. In 
high-rise buildings equipped with this system and 
equipped throughout with an automatic fire 
suppression system, the one-hour fireresistance rated 
elevator lobby as specified in 780 CMR 403.8 is not 
required. 

780 CMR 922.0 SMOKE AND HEAT VENTS 

922.1 General: Where exit access travel distance is 
increased in accordance with 780 CMR 1006.5.1, 
smoke and heat vents shall be constructed and 
installed in accordance with 780 CMR 922.0. 

922 2 Vent size and spacing: The vent area and the 
spacing of the vents shall comply with Table 922.2. 

922.2.1 Releasing devices: Smoke and heat vents 
shall open automatically by activation of a heat- 
responsive device rated at 100°F (38°C) to 220°F 
(104°C) above ambient The releasing mechanism 
shall be capable of operation such that the vent 
shall fully open when the vent is exposed to a 
time-temperature gradient that reaches an air 
temperature of 500°F (260 C C) within five 
minutes. Vents shall be capable of being opened 
by an approved manual operation. 

9223 Curtain board construction: Curtain boards 
shall be provided to subdivide a vented building. 
Curtain boards shall be constructed of material that 
will resist the passage of smoke and is consistent 
with the building type of construction. Curtain board 
location and depth shall comply with Table 922.2. 
The bottom of the curtain board shall be level. 



Table 922.2 

SMOKE AND HEAT VENT SIZE AND 

SPACING" 



Use 
Group 


Hazard 

classification of 
a 
contents 


Vent height 

above the 

floor, H 

(feet) 


Minimum 
curtain board 

depth from 

vent bottom 

(feet) 


Maximum 
area formed 

by curtain 

boards 

(square feet) 


Vent area to 

floor area 

ratio 


Maximum 

spacing of 

vent centers 

(feet) 


Maximum 

distance 

from wall of 

curtain 
boards (feet) 


Maximum 
distance 
between 
curtain 
boards 


F-l 


- 


- 


0.2XH 
but*4 


50,000 


1:100 


120 


60 


8XH 
but s250 feet 


S-l 


I through IV 


20 or less 


6 


10,000 


1:100 


100 


60 


8XH 


S-l 


I through IV 


Over 20 to 
40 


6 


8,000 


1:75 


100 


55 


8XH 

but s250 feet 


S-l 


I through IV 


20 or less 


4 


3,000 


1:75 


100 


55 


8XH 


S-l 


I through IV 


Over 20 to 
40 


4 


3,000 


1:50 


100 


50 


8XH 
but s250 feet 


S-l 


V 


20 or less 


6 


6,000 


1:50 


100 


50 


8XH 


S-l 


V 


Over 20 to 
30 


6 


6,000 


1:40 


90 


45 


8XH 


S-l 


V 


30 or more 


4 


2,000 


1:30 


75 


40 


8XH 

but s 100 feet 



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167 



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THE MASSACHUSETTS STATE BUILDING CODE 

Note a. See NFiPA 23 1 C listed in Appendix A for classification of Contents Class I through IV Class V commodities 
are products that present special fire hazards beyond those of Class I, II, 111 or IV, such as aerosols, foam plastic, PVC, 
PU, PS and asphalt paper. 
Note b. 1 foot = 304.8 mm; 1 square foot = 0.093 m . 



780 CMR 923.0 SUPERVISION 

923.1 Fire suppression systems: All automatic 
fire suppression systems required by 780 CMR shall 
be supervised by one of the following methods 
below. 

1 . AUL listed or FM approved Central Station 
Service in accordance with NFPA 72 listed in 
Appendix A. 

2. a^ Approved proprietary supervising station 
system, in accordance with NFPA 72 in 
accordance with NFPA 72 as listed in 
Appendic A. 

b. Approved remote station fire alarm system 
supervising station in accordance with NFPA 
72 as listed in Appendix A. 

3. Alarm signals to an approved Auxiliary Fire 
Alarm System in accordance with NFPA 72, with 
supervisory signals supervised by one or two 
above or at a constantly attended location 
approved by the local fire department, having 
personnel on duty trained to recognize the type of 
signal received and to take prescribed action. This 
shall be permitted to be a location different from 
that at which alarm signals are received. 

Exceptions: 

1. Underground gate valves with roadway 
boxes. 

2. Halogenated extinguishing systems that are 
not an integral part of a required automatic fire 
suppression system. 

3. Carbon dioxide extinguishing systems that 
are not an integral part of a required automatic 
fire suppression system. 

4. Dry- and wet-chemical extinguishing 
systems. 

5. Limited area sprinkler systems (see 
780 CMR 907.0). 

6. Occupancies in Use Group R complying 
with 780 CMR 906.2.2 and supervised in 

. accordance with NFPA 13R listed in 
Appendix A. 

923.1.1 Re-transmission of alarm signals 
received by central stations: In all cases, central 
stations shall re-transmit alarm signals within 90 
seconds of receipt, to the fire department having 
jurisdiction. 

923.2 Fire protective signaling systems and 
automatic fire detection systems: All fire 
protective signaling systems and automatic fire 
detection systems required by 780 CMR shall be 
supervised by one of the following methods below: 

1 . AUL listed or FM approved Central Station 
Service in accordance with NFPA 72 listed in 
Appendix A. 



2. a. Approved proprietary supervising station 
system, in accordance with NFPA 72 in 
accordance with NFPA 72 as listed in 
Appendic A. 

b. Approved remote station fire alarm system 
supervising station in accordance with NFPA 
72 as listed in Appendix A. 

3. Alarm signals to an approved Auxiliary Fire 
Alarm System in accordance with NFPA 72, with 
supervisory signals supervised by one or two 
above or at a constantly attended location 
approved by the local fire department, having 
personnel on duty trained to recognize the type of 
signal received and to take prescribed action. This 
shall be permitted to be a location different from 
that at which alarm signals are received. 

Exceptions: 

1 . For use group R see table 918 

2. Single- and multiple-station detectors as 
required by 780 CMR 919.0. 

3. Smoke detectors in occupancies in Use 
Group 1-3 (see 780 CMR 917.7.1). 

4. Smoke detectors in patient sleeping rooms 
in occupancies in Use Group 1-2 (see 
780 CMR 409.5.1). 

5. Fire protective signaling systems in 
occupancies in Use Groups H. 

923.2.1 Re-transmission of alarm signals 
received by central stations: In all cases, central 
stations shall re-transmit alarm signals within 90 
seconds of receipt, to the fire department having 
jurisdiction. 

780 CMR 924.0 FIRE PUMPS 

924.1 General: Where fire pumps are required to be 
installed as part of a required or non-required 
system(s), the fire pump(s) shall be designed and 
installed in accordance with 527 CMR 12.00 and 
NFPA 20 as listed in Appendix A. 

924.2 Rooms: Fire pumps and all related equipment 
shall be located in a dedicated room meeting the 
physical and environmental features of NFPA 20 
listed in Appendix A, and enclosed with not less 
than two hours fire resistive construction. Fire 
pumps rooms shall have either direct access to the 
room from grade or access by a two hour rated 
passageway and shall be properly secured from 
unauthorized entry. 

9243 Emergency power: All fire pumps shall be 
provided with emergency power when installed in 
the following types of buildings or use groups. 
Emergency power equipment installation shall 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

FIRE PROTECTION SYSTEMS 

conform to 527 CMR 12.00 and NFPA 20 as listed 3. Buildings and structures of Use Group E, with 

in Appendix A . a total occupant load of more than 300 occupants. 

1. High-rise buildings as defined by M.G.L. 4. Buildings and structures of Use Group H. 

c. 148 § 26A and 780 CMR. 5. Buildings and structures of Use Group I, 

2. Buildings and structures of Use Group A, with having surgery or treatment areas, 
a total occupant load of more than 300 occupants. 



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THE MASSACHUSETTS STATE BUILDING CODE 

NON-TEXT PAGE 



170 780 CMR - Sixth Edition 2/7/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

MEANS OF EGRESS 



1006.5.1 Roof vent increase: In buildings which 
are one story in height, equipped with automatic 
heat and smoke roof vents complying with 
780 CMR 922.0 and equipped throughout with an 
automatic sprinkler system in accordance with 
780 CMR 906.2.1, the exit access travel distance 
limitation in Table 1006.5 for occupancies in Use 
Group F-l or S-l shall be increased to 400 feet 
(122 m). 

1006.5.2 Use Group A-5: Occupancies in Use 
Group A-5, where all portions of the means of 
egress are essentially open to the outside, shall 
have an exit access travel distance of not more 
than 400 feet (122 m), except that such 
occupancies in buildings and structures of Type 1 
or 2 construction shall not have an exit access 
travel distance limitation. 

1006.6 Elevators, escalators and moving walks: 

Elevators, escalators and moving walks shall not be 
accepted as a required element of the means of 
egress. 

Exception: An elevator conforming to 780 CMR 
1007.3 shall be permitted for an accessible means 
of egress. 

1006.7 Common path of travel: The commonpath 
of exit access travel distance for occupants to reach 
a point where two separate and distinct paths of 
travel are available to two exits shall not exceed 100 
feet (30480 mm) in occupancies in Use Group 1-3. 

780 CMR 1007.0 ACCESSIBLE MEANS 
OF EGRESS 

1007.1 General: All spaces required to be 
accessible by 521 CMR, the Rules and Regulations 
of the Architectural Access Board, referenced in 
780 CMR 11, and listed in Appendix A shall be 
provided with not less than one accessible means of 
egress that complies with 780 CMR 1007.0. Where 
more than one means of egress is required from any 
required accessible space, each accessible portion of 
the space shall be served by not less than two 
accessible means of egress. Each accessible means 
of egress shall provide a continuous path of travel 
from a required accessible space to a public way 
which is usable by a mobility impaired person and 
shall include accessible routes, ramps, exit 
stairways, elevators, horizontal exits or smoke 
barriers. 

1007.2 Exit stairways: An exit stairway to be 
considered part of an accessible means of egress 
shall have a clear width of at least 48 inches (1219 
mm) between handrails and shall either incorporate 
an area of refuge within an enlarged story-level 
landing or shall be accessed from an area of refuge 
complying with 780 CMR 1007.5 or a horizontal 
exit. 



Exceptions: 

1. Stairs serving a single dwelling unit or 
guestroom. 

2. Occupancies equipped throughout with an 
automatic sprinkler system in accordance with 
780 CMR 906.2.1. 

3. The clear width of 48 inches (1219 mm) 
between handrails is not required for exit 
stairways accessed from a horizontal exit. 

10073 Elevators: An elevator, to be considered 
part of an accessible means of egress, shall comply 
with 524 CMR and standby power shall be provided 
in accordance with 527 CMR 12.00 as listed in 
Appendix A. The elevator shall be accessed from an 
area of refuge complying with 780 CMR 1007.5 or 
a horizontal exit. In buildings where a required 
accessible floor is four or more stories above or 
below a level of exit discharge serving that floor, at 
least one elevator shall be provided and shall serve 
as one required accessible means of egress. 
Exceptions: 

1. In buildings equipped throughout with an 
automatic sprinkler system in accordance with 
780 CMR 906.2.1, the elevator shall not be 
required to serve floors which are located at or 
above the level of exit discharge and provided 
with a horizontal exit complying with 780 CMR 
1019.0. 

2. Elevators are not required to be accessed from 
an area of refuge or a horizontal exit in 
occupancies equipped throughout with an 
automatic sprinkler system in accordance with 
780 CMR 906.2.1. 

1007.4 Platform lifts: Platform (wheelchair) lifts 
shall not serve as part of an accessible means of 
egress except within a dwelling unit. 

1007.5 Areas of refuge: Every required area of 
refuge shall be accessible from the space it serves by 
an accessible means of egress. The maximum travel 
distance from any accessible space to an area of 
refuge shall not exceed the travel distance permitted 
for the occupancy in accordance with 780 CMR 
1006.5. Every required area of refuge shall have 
direct access to an exit stairway complying with 
780 CMR 1007.2 or an elevator complying with 
780 CMR 1007.3. Where an elevator lobby is used 
as an area of refuge, the shaft and lobby shall 
comply with 780 CMR 1015.0 for smokeproof 
enclosures except where the elevators are in an area 
of refuge formed by a horizontal exit or smoke 
barrier. 

Exception: Areas of refuge are not required in 
open parking structures 

1007.5.1 Sire: Each area of refuge shall be sized 
to accommodate one wheelchair space of 30 
inches (762 mm) by 48 inches (1219 mm) for 
each 200 occupants or portion thereof, based on 
the occupant load of the area of refuge and all 



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THE MASSACHUSETTS STATE BUILDING CODE 



areas served by the area of refuge. Such 
wheelchair spaces shall not reduce the required 
means of egress width. Access to any of the 
required wheelchair spaces in an area of refuge 
shall not be obstructed by more than one 
adjoining wheelchair space. 

1007.5.2 Separation: Each area of refuge shall 
be separated from the remainder of the story by a 
smoke barrier complying with 780 CMR 712.0. 
Each area of refuge shall be designed to prevent 
the intrusion of smoke, except those areas of 
refuge located within a stairway enclosure or 
those areas of refuge where the area of refuge and 
all areas served by the area of refuge are equipped 
throughout with an automatic sprinkler system in 
accordance with 780 CMR 906.2.1. 

1007.53 Communication system: Every area of 
refuge in buildings more than four stories in 
height shall be provided with a two-way 
emergency communication system between the 
area of refuge and a central control point 

In each area of refuge provided with a two- 
way emergency communication system, 
instructions on the use of the area under 
emergency conditions shall be posted adjoining 
the communication system. The instructions shall 
include: 

1 . Directions to other means of egress; 

2. Advice that persons able to use the exit 
stairs do so as soon as possible unless they are 
assisting others; 

3. Information on how to summon planned 
availability of assistance in the use of stairs or 
supervised operation of elevators; and 

4. Directions for use of the two-way 
emergency communication system. 

1007.5.4 Identification: Each door providing 
access to an area of refuge from an adjacent floor 
area shall be identified by a sign complying with 
521 CMR and CABO Al 17.4 listed in Appendix 
A stating "Area of Refuge" and the International 
Symbol of Accessibility. The sign shall be 
illuminated as required for "Exit" signs where 
"Exit" sign illumination is required. Additionally, 
tactile signage complying with 521 CMR listed in 
Appendix A shall be located at each door to an 
area of refuge. 

1007.6 Signage: Signage indicating the location of 
accessible means of egress shall be installed at all 
exits and elevators that serve a required accessible 
space, but which are not an approved accessible 
means of egress. 

780 CMR 1008.0 OCCUPANT LOAD 
1008.1 Design occupant load: In determining 
required facilities, the number of occupants for 
whom exit facilities shall be provided shall be 
established by the largest number computed in 



accordance with 780 CMR 
1008.1.3. 



1008.1.1 through 



1008.1.1 Actual number: The actual number of 
occupants for whom each occupied space, floor or 
building is designed. 

1008.1.2 Number by Table 1008.1.2: The 

number of occupants computed at the rate of one 
occupant per unit of area as prescribed in Table 
1008.1.2. 

1008.13 Number by combination: The number 
of occupants of any space as computed in 
780 CMR 1008.1.1 or 1008.1.2 plus the number 
of occupants similarly computed for all spaces 
that discharge through the space in order to gain 
access to an exit. 

1008.1.4 Increased occupant load: The 

occupant load permitted in any building or portion 
thereof is permitted to be increased from that 
number established for the occupancies in Table 
1008.1.2 provided that all other requirements of 
780 CMR are also met based on such modified 
number. Where required by the code official, an 
approved aisle, seating or fixed equipment 
diagram to substantiate any increase in occupant 
load shall be submitted. Where required by the 
code official, such diagram shall be posted. 

Table 1008.1.2 

MAXIMUM FLOOR AREA ALLOWANCES 

PER OCCUPANT 





Floor area in 


Occupancy 


square feet per 




occupant 


Assembly with fixed seats See780 CMR 1 008. 1 .6 


Assembly without fixed seats 




Concentrated (chairs only - not fixed) 


7 net 


Standing space 


3 net 


Unconcentrated (tables and chairs) 


15 net 


Bowling centers, allow 5 persons for 




each lane including 15 feet of 




runway, and for additional areas 


7 net 


Business areas 


100 gross 


Courtrooms - other than fixed searing 


40 net 


areas 




Educational 




Classroom area 


20 net 


Shops and other vocational room" 


50 net 


areas 




Industrial areas 


100 gross 


Institutional areas 




Inpatient treatment areas 


240 gross 


Outpatient areas 


100 gross 


Sleeping areas 


120 gross 


Library 




Reading rooms 


50 net 


Stack area 


100 gross 


Mercantile, basement and grade floor 


30 gross 


areas 




Areas on other floors 


60 gross 


Storage stock, shipping areas 


300 gross 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

MEANS OF EGRESS 



shall be indicated with a distinctive marking 
stripe on each tread at the nosing or leading 
edge adjacent to the nonuniform risers. 

1014.6.3 Winders: Winders shall not be 
permitted in required means of egress stairways 
except in occupancies in Use Group R-3 and 
stairways serving a single dwelling unit. Such 
winders shall have a tread depth of not less than 
nine inches (229 mm) at a point not more than 12 
inches (305 mm) from the side where the tread is 
narrower and the minimum tread depth shall not 
be less than six inches (152 mm). 

1014.6.4 Spiral stairways: Spiral stairways shall 
not be used as an element of a means of egress 
except: in occupancies in Use Group R-3; within 
a single dwelling unit, from a mezzanine area not 
more than 250 square feet (23.25 m 2 ) in area 
which serves not more than five occupants; and in 
penal facilities from a guard tower, observation 
station or control room not more than 250 square 
feet (23 m 2 ) in area. The minimum width of all 
spiral stairways shall be 26 inches (660 mm) with 
each tread having a 7V4-inch (191 mm) minimum 
tread depth at 12 inches (305' mm) from the 
narrow edge. All treads shall be identical and the 
rise shall not be more than 9'/2-inches (241 mm). 
A minimum headroom of six feet six inches (1981 
mm) shall be provided. 

1014.6.5 Circular stairways Circular stairways 
shall have a minimum tread depth and a maximum 
riser height in accordance with 780 CMR 1014.6 
and the smaller radius shall not be less than twice 
the width of the stairway. The minimum tread 
depth measured 12 inches (305 mm) from the 
narrower end of the tread shall not be less than 1 1 
inches (279 mm). 

1014.6.6 Alternating tread stairways: 

Alternating tread stairways are permitted as an 
element of a. means of egress in buildings from a 
mezzanine area not more than 250 square feet (23 
m 2 ) in area and which serves not more than five 
occupants; and in penal facilities, from a guard 
tower, observation station or control room not 
more than 250 square feet (23 m 2 ) in area. 
Alternating tread stairways are also permitted for 
access to roofs as provided for in 780 CMR 
1027.0. 

1014.6.6.1 Handrails of alternating tread 
stairways: Handrails shall be provided on 
both sides of alternating tread stairways and 
shall conform to 780 CMR 1022.0. 

1014.6.6.2 Treads of alternating tread 
stairways: Alternating tread stairways shall 
have a minimum projected tread of five inches 
(127 mm), a minimum tread depth of 8'/4 
inches (216 mm), a minimum tread width of 
seven inches (178 mm) and a maximum riser 
to the next surface of the alternating tread of 



9'/i inches (241 mm). The initial tread of the 
stairway shall begin at the same elevation as 
the platform, landing or floor surface. 
Exception: Alternating tread stairways used 
as an element of a means of egress in 
buildings from a mezzanine area not more 
than 250 square feet (23 m 2 ) in area which 
serves not more than five occupants shall 
have a rninimum projected tread of 8V2 
inches (216 mm) with a minimum tread 
depth of IOV2 inches (267 mm). The rise to 
the next alternating tread surface shall not be 
more than eight inches (203 mm). 

1014.7 Stairway guards and handrails: Stairways 
shall have continuous guards and handrails on both 
sides. Intermediate handrails are required so that all 
portions of the required width of stairs are within 30 
inches (762 mm) of a handrail. On monumental 
stairs, handrails shall be located along the most 
direct path of egress travel. Handrails shall be 
provided for alternating tread stairways in 
accordance with 780 CMR 1014.6.6.1. Guards shall 
be constructed in accordance with 780 CMR 1021.0. 
Handrails shall be constructed in accordance with 
780 CMR 1022.0. 

Exceptions: 

1 . Stairways with fewer than three risers are not 
required to have handrails where serving a single 
dwelling unit or where such stairways are not in 
an exit access corridor or aisle, exit or exit 
discharge. 

2. Aisle stairs provided with a center handrail or 
serving seating on one side shall be equipped with 
a minimum of one handrail. 

3. Stairways within a dwelling unit shall be 
equipped with a rninimum of one handrail. 

4. Spiral stairways shall be equipped with a 
minimum of one handrail. 

1014.8 Egress doors: Means of egress stairway 
doors shall provide an egress capacity of not less 
than the required capacity of the stairway which 
serves the floor or area from which the egress door 
leads. 

1014.8.1 Width: The minimum required width of 
every door to or from a means of egress stairway 
shall be determined by the most restrictive of the 
following criteria: 

1. 29%-inch (756 mm) clear width within a 
dwelling unit that is not required to be 
accessible or adaptable. 

2. 36-inch (914 mm) minimum width of door 
leaf in an occupancy in Use Group 1-2. 

3. 32-inch (813 mm) clear width in all other 
cases. 

1014.8.2 Direction of swing: All means of egress 
doors shall swing on a landing in the direction of 
egress travel. When opening, egress doors shall 
not reduce the width of landings to less than one- 



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half of the required width. When fully open, means 
of egress doors shall not project more than seven 
inches (178 mm) into the required width. 

Exception: Doors leading from a room or 
tenant space to a stairway in buildings in which 
only one exit is required are not required to 
swing in the direction of egress travel. 

1014.83 Door construction: All doorway 
opening protectives shall be fire doors complying 
with 780 CMR 716.0. Labeled means of egress 
fire doors shall have a maximum transmitted 
temperature end point of not more than 450 °F 
(232°C) above ambient at the end of 30 minutes 
of standard fire test exposure. 

1014.9 Stairway construction: All stairways shall 
be built of materials consistent with the types of 
materials permitted for the type of construction of 
the building; except that wood handrails shall be 
permitted for all types of construction. Such 
stairways shall have solid treads and landing 
platforms, and all finish floor surfaces shall be of 
slip-resistant materials. 

1014.9.1 Strength: All stairways, platforms and 
landings in other than occupancies in Use Group 
R-3 shall be adequate to support a live load of 100 
pounds per square foot (488.20 kg/m 2 ) and a 
concentrated load of 300 pounds (136.20 kg). 

1014.10 Discharge identification: Exit stairways 
which continue beyond the level of exit discharge 
shall be interrupted at the level of exit discharge by 
partitions, doors or other effective means of 
preventing persons from continuing past the floor of 
discharge while egressing. 

1014.11 Interior stairway enclosures: Interior exit 
stairways shall be enclosed with fire separation 
assemblies having a fireresistance rating of not less 
than two hours except that such stairways in 
occupancies in Use Group A, B, E, F, H-4, 1, M, R 
or S which connect less than four stories shall be 
enclosed with _/zre separation assemblies having a 
fireresistance rating of not less than one hour. An 
exit stairway enclosure shall not be used for any 
purpose other than means of egress. Openings in 
exit enclosures, other than unexposed exterior 
openings, shall be limited to those necessary for exit 
access to the enclosure from normally occupied 
spaces and for egress from the enclosure. 

Exceptions: 

1 . Stairways are not required to be enclosed in 
occupancies in Use Group A-5 in which all 
portions of the means of egress are essentially 
open to the outside. 

2. Stairways serving and contained within a 
single residential dwelling unit in occupancies in 
Use Group R-2 or R-3 are not required to be 
enclosed. 



3. Stairways that are not a required means of 
egress element are not required to be enclosed 
where such stairways comply with 780 CMR 
713.3. 

4. Stairways in open parking structures which 
serve only the parking structure are not required 
to be encloed. 

5. Stairways in occupancies in Use Group 1-3 as 
provided for in 780 CMR 410.3.7. 

1014.11.1 Exterior walls: Exterior walls of an 
enclosed exit stairway shall comply with the 
requirements of 780 CMR 705.0 for exterior 
walls. Where nonrated walls or unprotected 
openings enclose the exterior of the stairway, the 
building exterior walls within ten feet (3048 mm) 
horizontally of the nonrated wall or unprotected 
opening shall be constructed as required for 
stairway enclosures, including opening 
protectives, but are not required to exceed a one- 
hour fireresistance rating with 3 /4-hour opening 
protectives. This construction shall extend 
vertically from a point ten feet (3048 mm) above 
the topmost landing of the stairway or to the roof 
line, whichever is lower, and down to the ground. 

1014.11.2 Penetrations: Penetrations into and 
openings through an exit enclosure assembly are 
prohibited except for required exit doors, 
ductwork and equipment necessary for 
independent stair pressurization, required 
ventilation sprinkler piping, standpipes and 
electrical conduit serving the stairway and 
terminating at a steel box that does not exceed 16 
square inches (10323 mm 2 ) in area. There shall 
not be any penetrations or communicating 
openings, whether protected or not between 
adjacent stairway enclosures. 

1014.11.3 Door locks: All interior stairway 
means of egress doors shall be openable from 
both sides without the use of a key or special 
knowledge or effort. 

Exceptions: 

1 . Stairway discharge doors shall be operable 
from the egress side and shall only be locked 
from the opposite side. 

2. 780 CMR 1014.0 shall not apply to doors 
arranged in accordance with 780 CMR 403.10 
and 1017.4. 

1014.11.4 Exit signs: Each door to an enclosed 
exit stairway shall be equipped with tactile 
signage reading "Exit" complying with 521 CMR 
listed in Appendix A and installed on the side of 
the door from which egress is to be made. 

1014.113 Stairway floor number signs: A sign 
shall be provided at each floor landing in all inter- 
ior exit stairways connecting more than three stor- 
ies designating the floor level above and below 
the level of exit discharge, the identification of the 
stairway and the availability of roof access from 
that stairway. The sign shall be located 



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approximately five feet (1524 mm) above the 
floor landing in a position which is readily visible 
when the doors are in the open and closed 
positions. 

1014.12 Exterior stairways: Exterior stairways 
shall have openings on at least one side facing an 
outer court, yard or public way. The openings shall 
have an aggregate width of not less than 20% of the 
stairway perimeter and an aggregate area on each 
level of not less than 12% of the total perimeter wall 
area of each level. In other than occupancies in Use 
Group R-3, treads, platforms and landings which are 
part of exterior stairways in climates subject to snow 
or ice shall be protected to prevent accumulation of 
same. Exterior stairways shall not be accepted as an 
exit in the following cases: 

1. Occupancies in Use Groups 1-2 and 1-3 in 
buildings that exceed four stories or 50 feet 
(15240 mm) in height. 

2. Floors that exceed five stories or 65 feet 
(19812 mm) in height above the level of exit 
discharge. 

1014.12.1 Location: Exterior exit stairways shall 
not project beyond the street lot line. Exterior 
exit stairways shall be located at least ten feet 
(3048 mm) from adjacent lot lines and from other 
buildings on the same lot unless openings in such 
buildings are protected by %-hour opening 
protectives. 

Exception: Noncombustible exterior 

stairways constituting not more than 50% of 
the required means of egress shall be exempt 
from the ten-foot (3048 mm) fire separation 
distance requirement. 

1014.12.2 Protection: Exterior exit stairs shall be 
separated from the interior of the building by 
walls with a fireresistance rating of not less than 
one hour, with fixed or self-closing opening 
protectives as required in 780 CMR 1014.11. 
This protection shall extend vertically from a 
point ten feet (3048 mm) above the topmost 
landing or the roof line, whichever is lower, down 
to the ground, and shall extend horizontally ten 
feet (3048 mm) from each side of the stairway. 
Openings within the horizontal ten-foot (3048 
mm) extension of the protected walls beyond the 
stairway shall be equipped with fixed 3 /4-hour 
opening protective assemblies. 

Exceptions: 

1. Occupancies, other than those in Use Group 
R-l or R-2, in buildings that are two stories or 
less above grade where the level of exit 
discharge is the first story above grade. 

2. Separation from the interior of the building 
is not required where the exterior stairway is 
served by an exterior exit access balcony that 
connects two remote exterior stairways or 
other approved exits, with a perimeter which is 
not less than 50% open. To be considered 



open, the opening shall be a minimum of 50% 
of the height of the enclosing wall, with the top 
of the openings not less than seven feet (2134 
mm) above the top of the balcony. 
3. Separation from the interior of the building 
is not required for an exterior stairway located 
in a building or structure that is permitted to 
have unenclosed interior exit stairways in 
accordance with 780 CMR 1014.1 1. 

780 CMR 1015.0 SMOKEPROOF 
ENCLOSURES 

1015.1 General: A smokeproof enclosure shall 
consist of an enclosed interior exit stairway that 
conforms to 780 CMR 1014.0 and an outside 
balcony or a ventilated vestibule meeting the 
requirements of 780 CMR 1015.0. Where access to 
the roof is required by 780 CMR 1027.0, such access 
shall be from the smokeproof enclosure where a 
smokeproof enclosure is required. 

1015.2 Where required: In buildings having a 
height of 70 feet above the grade plane, at least one 
exit stairwell shall be protected by a smokeproof 
enclosure serving all floor levels. In buildings 
having exit stairwells more than 30 feet below the 
level of exit discharge, at least one exit stairwell 
shall be protected by a smokeproof enclosure 
serving all floor levels located below the level of exit 
discharge. 

Exception: Occupancies in Use Group 1-2. 

1015.3 Access: Access to the stair shall be from 
every story and shall be by way of a vestibule or by 
way of an open exterior balcony. The minimum 
dimension of the vestibule shall not be less than the 
required width of the corridor leading to the 
vestibule but shall not have a width of less than 44 
inches (1118 mm) and shall not have a length of less 
than 72 inches (1829 mm) in the direction of egress 
travel. 

1015.4 Construction: The smokeproof enclosure 
shall be separated from the remainder of the building 
by not less than a two-hour fireresistance rated fire 
separation assembly without openings other than the 
required means of egress doors. The vestibule shall 
be separated from the stairway by not less than a 
two-hour fireresistance rated fire separation 
assembly. The open exterior balcony shall be 
constructed in accordance with the fireresistance 
rating requirements for floor construction. 

1015.4.1 Door closers: All doors in a smokeproof 
enclosure shall be self-closing or shall be 
automatic-closing by actuation of a smoke 
detector installed at the floor side entrance to the 
smokeproof enclosure in accordance with 
780 CMR 716.5. The actuation of the smoke 
detector on any door shall activate the closing 



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at all levels. Smoke detectors shall be installed in 
accordance with 780 CMR 918.8. 

1015.5 Natural ventilation alternative: The 

provisions of 780 CMR 1015.5.1 through 1015.5.3 
shall apply to ventilation of smokeproof enclosures 
by natural means. 

1015.5.1 Balcony doors: Where access to the 
stairway is by way of an open exterior balcony, 
the door assembly into the enclosure shall be a 
fire door in accordance with 780 CMR 716.0. 

1015.5.2 Vestibule doors: Where access to the 
stairway is by way of a vestibule, the door 
assembly into the vestibule shall be a. fire door 
complying with 780 CMR 716.0. The door 
assembly from the vestibule to the stairway shall 
have not less than a 20-minute fire protection 
rating complying with 780 CMR 716.0. 

1015.53 Vestibule ventilation: Each vestibule 
shall have a minimum net area of 16 square feet 
(1.49 m 2 ) of opening in a wall facing an outer 
court, yard or public way which is at least 20 feet 
(6096 mm) in width. 

1015.6 Mechanical ventilation alternative: The 

provisions of 780 CMR 1015.6.1 through 1015.6.4 
shall apply to ventilation of smokeproof enclosures 
by mechanical means. 

1015.6.1 Vestibule doors: The door assembly 
from the building into the vestibule shall be afire 
door complying with 780 CMR 716.0. The door 
assembly from the vestibule to the stairway shall 
have not less than a 20-minute fire protection 
rating in accordance with 780 CMR 716.0. The 
door from the building into the vestibule shall be 
provided with gaskets or other provisions to 
minimize air leakage. 

1015.6.2 Vestibule ventilation: The vestibule 
shall be supplied with not less than one air change 
per minute, and the exhaust shall not be less than 
150% of supply. Supply air shall enter and 
exhaust air shall discharge from the vestibule 
through separate, tightly constructed ducts used 
only for that purpose. Supply air shall enter the 
vestibule within six inches (152 mm) of the floor 
level. The top of the exhaust register shall be 
located at the top of the smoke trap but not more 
than six inches (152 mm) down from the top of 
the trap, and shall be entirely within the smoke 
trap area. Doors in the open position shall not 
obstruct duct openings. Duct openings with 
controlling dampers are permitted where 
necessary to meet the design requirements, but 
dampers are not otherwise required. 

1015.6.2.1 Engineered ventilation system: 

Where a specially engineered system is used, 



the systems shall exhaust a quantity of air 
equal to not less than 90 air changes per hour 
from any vestibule in the emergency operation 
mode and shall be sized to handle three 
vestibules simultaneously. Smoke detectors 
shall be located at the floor side entrance to 
each vestibule and shall activate the system for 
the affected vestibule. Smoke detectors shall 
be installed in accordance with 780 CMR 
918.8. 

1015.63 Smoke trap: The vestibule ceiling shall 
be at least 20 inches (508 mm) higher than the 
door opening into the vestibule to serve as a 
smoke and heat trap and to provide an upward 
moving air column. The height shall not be 
decreased unless approved and justified by design 
and test.' 

1015.6.4 Stair shaft air movement system: The 

stair shaft shall be provided with a dampered 
relief opening and supplied with sufficient air to 
maintain a niinimum positive pressure of 0.10 
inch of water column (24.88 P) in the shaft 
relative to the vestibule with all doors closed. 

1015.7 Ventilating equipment: The activation of 
ventilating equipment required by the alternatives in 
780 CMR 1015.6 shall be by smoke detectors 
installed at each floor level at an approved location 
at the entrance to the smokeproof enclosure. When 
the closing device for the stair shaft and vestibule 
doors is activated by smoke detection or power 
failure, the mechanical equipment shall activate and 
operate at the required performance levels. Smoke 
detectors shall be installed in accordance with 
780 CMR 918.8. 

1015.7.1 Ventilation systems: Smokeproof 
enclosure ventilation systems shall be 
independent of other building ventilation systems. 
The equipment and ductwork shall comply with 
one of the following: 

1 . Equipment and ductwork shall be located 
exterior to the building and shall be directly 
connected to the smokeproof enclosure or 
connected to the smokeproof enclosure by 
ductwork enclosed by two-hour fireresistance 
rated fire separation assemblies. 

2. Equipment and ductwork shall be located 
within the smokeproof enclosure with intake or 
exhaust directly from and to the outside or 
through ductwork enclosed by two-hour 
fireresistance rated fire separation assemblies. 

3. Equipment and ductwork shall be located 
within the building if separated from the 
remainder of the building, including other 
mechanical equipment, by two-hour 
fireresistance rated fire separation assemblies. 



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1015.7.2 Standby power: Mechanical vestibule 
and stair shaft ventilation systems and automatic 
fire detection systems shall be powered by an 
approved standby power system conforming to 
780 CMR 403.9.1 and 527 CMR 12.00, the 
Massachusetts Electrical Code, referenced in 
780 CMR 27, and listed in Appendix A . 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

MEANS OF EGRESS 



1015.7.3 Acceptance and testing: Before the 
mechanical equipment is approved, the system 
shall be tested in the code official's presence to 
confirm that the system is operating in compliance 
with these requirements. 

780 CMR 1016.0 RAMPS 

1016.1 Capacity: The capacity of a ramp used as a 
means of egress component shall be computed in 
accordance with 780 CMR 1009.0. 

Note: For ramp design requirements related to 
building access issues, refer to 780 CMR 1 1.00 

1016.2 Minimum dimensions: The minimum 
dimensions of means of egress ramps shall comply 
with 780 CMR 1016.2.1 through 1016.2.3. 

1016.2.1 Width: The minimum width of a means 
of egress ramp shall not be less than that required 
for corridors by 780 CMR 101 1.3. 

1016.2.2 Headroom: The minimum headroom in 
all parts of the means of egress ramp shall not be 
less than 80 inches (2032 mm). 

1016.23 Restrictions: Means of egress ramps 
shall not reduce in width in the direction of egress 
travel. Projections into the required ramp and 
landing width are prohibited except at and below 
handrail height where, at each handrail, the 
projections shall not exceed 3!4 inches (89 mm) 
into the required width. Doors opening onto a 
landing shall not reduce the clear width to less 
than 42 inches (1067 mm). 

10163 Maximum slope: The maximum slope of 
means of egress ramps in the direction of travel shall 
be one unit vertical in 12 units horizontal (1:12); 
except the maximum slope shall be: one unit 
vertical in eight units horizontal (1:8) if the rise is 
limited to three inches (76 mm); one unit vertical in 
ten units horizontal (1 : 10) if the rise is limited to six 
inches (152 mm). The maximum slope across the 
direction of travel shall be one unit vertical in 48 
units horizontal (1:48). 

Exception: Aisles in areas of Use Group A shall 

comply with 780 CMR 1012.0. 

1016.4 Landings: Ramp slopes of one unit vertical 
in 12 units horizontal (1:12) or steeper shall have 
landings at the top, bottom, all points of turning, 
entrance, exit and at doors. Ramps shall not have a 
vertical rise greater than 30 inches (762 mm) 
between landings. The maximum slope of landings 
shall be one unit vertical in 48 units horizontal 
(1 :48). The least dimension of a landing shall not be 
less than the required width of the ramp except that 
the landing dimension in the direction of travel is not 
required to exceed four feet (1219 mm) where the 



travel from one ramp to the next ramp is a straight 
run. 

Exception: Aisles in areas of Use Group A shall 

comply with 780 CMR 1012.0. 

1016.5 Guards and handrails: Guards shall be 
provided on both sides of the ramp and shall be 
constructed in accordance with 780 CMR 1021.0. 
Handrails conforming to 780 CMR 1022.0 shall be 
provided on both sides of every ramp having a slope 
greater than one unit vertical in 20 units horizontal 
(1 :20). Handrails are not required on ramps where 
the vertical rise between landings is six inches (152 
mm) or less. 

Exception: Handrails in aisles in occupancies in 
Use Group A shall comply with 780 CMR 1012.0. 

1016.5.1 Drop-offs: The sides of ramps and 
landings with a drop-off shall have a curb with a 
minimum four-inch (102 mm) height above the 
walking surface or shall be provided with a 
guardrail. 

1016.6 Ramp construction: Ramps used as an exit 
shall conform to the applicable requirements of 
780 CMR 1014.9 as to materials of construction and 
enclosure. 

1016.6.1 Surface: For all slopes exceeding one 
unit vertical in 20 units horizontal (1:20) and 
where the use is such as to involve danger of 
slipping, the ramp shall be surfaced with approved 
slip-resistant materials. 

1016.6.2 Exterior ramps: Exterior ramps and 
landings shall be designed and constructed to 
prevent water from accumulating on the walking 
surface. 

780 CMR 1017.0 MEANS OF EGRESS 
DOORWAYS 

1017.1 General: The requirements of 780 CMR 
1017.0 shall apply to all doorways serving as a 
component or element of a means of egress, except 
as provided for in 780 CMR 1014.8, 1014.12.2, 
1015.5.1. 1015.5.2 and 1015.6.1. 

1017.1.1 Floor surface: The floor surface on 
both sides of a door shall be^t the same elevation. 
The floor surface over which the door swings 
shall be at the same elevation as the floor level at 
the threshold and shall extend from the door in the 
closed position a distance equal to the door width. 

Exception: This requirement shall not apply 

to: 

1. Exterior doors, as provided for in 780 CMR 
1005.6, which are not on an accessible route. 

2. Variations in elevation due to differences in 
finish materials, but not more than 'A inch (13 
mm). 



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Thresholds at doorways shall not exceed % 
inch (19 mm) in height above the finished floor 
surface for exterior residential sliding doors or Vi 
inch (13 mm) for all other doors. Raised 
thresholds and floor level changes greater than V* 
inch (6 mm) at doorways shall be beveled with a 
slope not greater than one unit vertical in two 
units horizontal (1:2). 

1017.2 Number of doorways: Each occupant of a 
room or space shall have access to at least two exits 
or exit access doors from the room or space where 
the occupant load of the space exceeds that listed in 
Table 1017.2, or where the travel distance from any 
point within the space to an exit or exit access door 
exceeds that listed in Table 1017.2. Where the 
occupant load of a room or space is between 501 and 
1,000, a minimum of three exits or exit access doors 
shall be provided. Where the occupant load of a 
room or space exceeds 1,000, a minimum of four 
exits or exit access doors shall be provided. 
Exceptions: 

1. Boiler, incinerator and fumace rooms shall be 
provided with two egress doorways where the 
area exceeds 500 square feet (47 m 2 ) and 
individual fuel-fired equipment exceeds 400,000 
Btuh (1 17 kW) input capacity. Door ways shall 
be separated by a horizontal distance equal to not 
less than one-half of the diagonal dimension of 
the room. Where two doorways are required by 
this exception, a fixed ladder access out of the 
room shall be permitted in lieu of one doorway. 

2. In an occupancy in Use Group 1-2, any room 
and any suite of rooms as permitted in 780 CMR 
1011.1.1, Exception No.3, of more than 1,000 
square feet (93 m 2 ), shall have at least two exit 
access doors remote from each other. 

Table 1017.2 
SPACES WITH ONE MEANS OF EGRESS 



Use Group 


Maximum 
occupant load 


Maximum travel 
distance (feet) 


A,B,E,F,M 


so 


75 


H-l a ,H-2,H-3 


3 


25 


H-4 


10 


75 


I.R 


10 


■ 75... 


S 


30 


100 



Note a. For requirements for areas and spaces in Use 
Group H-l, see 780 CMR418.2.2. 
Noteb. 1 foot = 304.8 mm. 

1017.2.1 Entrance and egress doorways: Where 
separate doors are provided for entrance and 
means of egress, the entrance door shall be clearly 
marked "Entrance Only" in letters not less than 
six inches (152 mm) in height and legible from 
both inside and outside. 

1017.2.2 Location of doors: The required 
doorways opening from a room or space within a 
building and leading to an exit access shall be 
located as remote as practicable from each other 



and shall conform to 780 CMR 1006.4.1. The 
distance of exit access travel from any point in a 
room or space to a required exit door shall not 
exceed the limitations of 780 CMR 1006.5. 

1017.2.3 Door arrangement: The space between 
doors in series shall not be less than seven feet 
(2134 mm) as measured when the doors are in the 
closed position. 

Exception: Power-operated doors and 
occupancies in Use Groups 1-1 and R-3. 

1017.3 Size of doors: The minimum width of each 
door opening shall be sufficient for the occupant 
load thereof and shall provide a clear width of not 
less than 32 inches (813 mm). Where 780 CMR 
1017.0 requires a minimum clear width of 32 inches 
(813 mm) and a door opening includes two door 
leaves without a mullion, one leaf shall provide a 
clear opening width of 32 inches (813 mm). The 
maximum width of a swinging door leaf shall be 48 
inches nominal. Means of egress doors in an 
occupancy in Use Group 1-2 used for the movement 
of beds shall be at least 44 inches (1118 mm) wide. 
The height of doors shall not be less than 80 inches 
(2032 mm). 

Exceptions: 

1. K means of egress door serving a storage area 
of not more than 800 square feet (74 m 2 ) and 
which is normally unoccupied shall have a 
maximum width often feet (3048 mm). 

2. The minimum and maximum width shall not 
apply to doors that are not required for means of 
egress in occupancies in Use Groups R-2 and R-3. 

3. Door openings to resident sleeping rooms in 
occupancies in Use Group 1-3 shall have a clear 
width of not less than 28 inches (71 1 mm). 

4. Door openings to storage closets less than ten 
square feet (0.93 m 2 ) in area shall not be limited 
by the minimum width. 

5. Width of door leafs in revolving doors that 
comply with 780 CMR 1018.0 shall not be 
limited. 

6. Door openings within a dwelling unit shall not 
be less than 78 inches (1981 mm) in height. 

7. Exterior door openings in dwelling units, other 
than the required exit door, shall not be less than 
76 inches (1930 mm) in height. 

8. Interior egress doorways within a dwelling unit 
not required to be adaptable or accessible shall 
have a minimum clear width of 29%-inches (755 
mm). 

1017.4 Door hardware: Door handles, pulls, 
latches, locks and other operating devices shall be at 
a maximum height of 48 inches (1219 mm) above 
the finished floor. The operating devices shall be 
capable of operation with one hand and shall not 
require tight grasping, tight pinching or twisting of 
the wrist to operate. All means of egress doors shall 
be of a side-swinging type. All doors shall swing in 
the direction of egress where serving an occupant 



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MEANS OF EGRESS 



indicating the direction and way of egress. All 
"Exit" signs shall be located at exit doors or exit 
access areas, so as to be readily visible. Sign 
placement shall be such that any point in the exit 
access shall not be more than 100 feet (30480 mm) 
from the nearest visible sign. 
Exceptions: 

1 . "Exit" signs are not required in sleeping room 
areas in occupancies in Use Group 1-3. 

2. Main exterior exit doors which are obviously 
and clearly identifiable as exits are not required to 
have "Exit" signs where approved. 

1023.2 Size and color: "Exit" signs shall have red 
letters at least six inches (152 mm) high and the 
minimum width of each stroke shall be 2 A inch (19 
mm) on a white background or in other approved 
distinguishable colors. The word "Exit," except the 
letter I, shall have letters having a width of not less 
than two inches (5 1 mm) and the minimum spacing 
between letters shall not be less than % inch (10 
mm). Signs larger than the minimum size herein 
required shall have letter widths and spacing in the 
same proportions to the height as indicated in 
780 CMR 1023.0. If an arrow is provided as part of 
an "Exit" sign, the construction shall be such that the 
arrow direction cannot be readily changed. The 
word "Exit" shall be clearly discernible when the 
sign illumination means is not energized. 
Exception: All exit signs tested and listed to 
UL-924 as listed in Appendix A and satisfying 
the power source requirements of 780 CMR 
1023.4 shall be permitted. 

10233 Illumination: Each sign shall be illuminated 

by a source providing not less than five footcandles 

(54 lux) at the illuminated surface and shall have a 

contrast ratio of not less than 0.5. 

Exception: Approved self-luminous signs which 

provide evenly illuminated letters shall have a 

minimum luminance of 0.06 foot lamberts (0.21 

cd/m 2 ). 

1023.4 Power source: All "Exit" signs shall be 
illuminated at all times that the building is occupied. 
To assure continued illumination for a duration of 
not less than 1 hour in case of primary power loss, 
the "Exit" signs shall be connected to an emergency 
electrical system that complies with 527 CMR 
12.00, the Massachusetts Electrical Code, 
referenced in 780 CMR 27, and listed in 
Appendix A. 
Exceptions: 

1 . Approved self-luminous signs which provide 
continuous illumination independent of external 
power sources are not required to comply with 
780 CMR 2706.0. 

2. All exit signs tested and listed to UL-924 as 
listed in Appendix A and satisfying the power 



source requirements of 780 CMR 1023.4 shall be 
permitted. 

780 CMR 1024.0 MEANS OF EGRESS 
LIGHTING 

1024.1 Artificial lighting: All means of egress in 
other than occupancies in Use Group R-3 shall be 
equipped with artificial lighting facilities to provide 
the intensity of illumination herein prescribed 
continuously during the time that conditions of 
occupancy of the building require that the exits be 
available. Lighting shall also be provided to 
illuminate the exit discharge. Means of egress 
lighting in occupancies in Use Group R-2, other than 
lighting within a dwelling unit, shall be wired on a 
circuit independent of circuits within any dwelling 
unit. The disconnecting means and overcurrent 
protection device shall not be located within a 
dwelling unit or such that access to such devices 
must be obtained by going through a dwelling unit. 

1024.2 Intensity of illumination: The intensity of 
floor lighting shall not be less than one footcandle 
(1 1 lux) except as provided for in 780 CMR 1 024.3. 

10243 Use Groups A and E: In occupancies in 
Use Groups A and E for the exhibition of motion 
pictures or other projections by means of directed 
light, the rninimum required illumination of aisles 
during such period of projection shall be 0.2 
footcandle (2 lux). 

10243.1 Control: The lighting of exits, aisles 
and auditoriums shall be controlled from a 
location that does not provide access to 
unauthorized persons. Supplementary control 
shall be provided as specified in 780 CMR 41 1.4 
in the motion picture projection room. 

1024.4 Power source: Means of egress lighting in 
all buildings, rooms or spaces required to have more 
than one exit or exit access shall be connected to an 
emergency electrical system that complies with 
527 CMR 12.00, the Massachusetts Electrical 
Code, referenced in 780 CMR 27, and listed in 
Appendix A to assure continued illumination for a 
duration of not less than one hour in case of 
emergency or primary power loss. 

780 CMR 1025.0 FIRE ESCAPES 
1025.1 Where permitted: Fire escapes shall be 
permitted only as provided for in 780 CMR 1025.1.1 
through 1025.1.4. 

1025.1.1 New buildings: Fire escapes shall not 
constitute any part of the required means of egress 
in new buildings. 



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1025.1.2 Existing fire escapes: Existing fire 
escapes shall be continued to be accepted as a 
component in the means of egress in existing 
buildings only. 

1025.13 New fire escapes: New fire escapes for 
existing buildings shall be permitted only where 
exterior stairs cannot be utilized due to lot lines 
limiting stair size or due to the sidewalks, alleys 
or roads at grade level. New fire escapes shall not 
incorporate ladders or access by windows. 

1025.1.4 Limitations: Fire escapes shall comply 
with 780 CMR 1025.0 and shall not constitute 
more than 50% of the required number of exits 
nor more than 50% of the required exit capacity. 

1025.2 Location: Where located on the front of the 
building and where projecting beyond the building 
line, the lowest landing shall not be less than seven 
feet (2134 mm) or more than 12 feet (3658 mm) 
above grade, and shall be equipped with a 
counterbalanced stairway to the street. In alleyways 
and thoroughfares less than 30 feet (9144 mm) wide, 
the clearance under the lowest landing shall not be 
less than 12 feet (3658 mm). 

1025.3 Construction: The fire escape shall be 
designed to support a live load of 1 00 pounds per 
square foot (488.20 kg/m 2 ) and shall be constructed 
of steel or other approved noncombustible materials. 
Fire escapes constructed of wood not less than 
nominal two inches thick are permitted on buildings 
of Type 5 construction. Walkways and railings 
located over or supported by combustible roofs in 
buildings of Types 3 and 4 construction are 
permitted to be of wood not less than nominal two 
inches thick. 

10253.1 Dimensions: Stairs shall be at least 22 
inches (559 mm) wide with risers not more than, 
and treads not less than, eight inches (203 mm) 
and landings at the foot of stairs not less than 40 
inches (1016 mm) wide by 36 inches (914 mm) 
long, located not more than eight inches (203 mm) 
below the door. 

10253.2 Opening protectives: Doors and 
windows along the fire escape shall be protected 
with %-hour opening protectives. 

780 CMR 1026.0 SLIDESCAPES 

1026.1 Where permitted: Existing slidescapes and 
safety chutes shall be permitted in existing 
occupancies in Use Groups E, H and I where 
approved. Slidescapes and safety chutes shall be 
permitted in occupancies in Use Groups H-l and H- 
2 where constructed in an approved manner. 

1026.2 Location: The arrangement and location of 
slidescapes shall conform to 780 CMR 10 for means 



of egress and shall be designated by "Exit" signs and 
lights as provided for in 780 CMR 1023.0. 

10263 Construction: All chutes shall be 
constructed of approved noncombustible materials 
with a pitch in the line of travel of not less than 24 
nor more than 42° (0.42 rad to 0.73 rad), measured 
on the developed circumference of spiral chutes. 
Straight chutes shall not be less than 24 inches (610 
mm) and spiral chutes shall not be less than 28 
inches (711 mm) in clear width; nor more than 44 
inches (1118 mm) wide in any case. Where erected 
on the interior of a building, the chutes shall be 
enclosed as required in 780 CMR 1014.11 for 
interior stairways with direct means of egress to a 
street or other public way. 

1026.4 Capacity: Slidescapes shall have a rated 
egress capacity of 60 occupants per slide. 
Slidescapes, except as permitted for occupancies in 
Use Groups H-l and H-2, shall not constitute more 
than 25% of the required means of egress capacity 
from any building or structure or any individual 
story. 

780 CMR 1027.0 ACCESS TO ROOF 

1027.1 By stairway or ladder: In buildings more 
than three stories in height except those with a roof 
slope greater than four units vertical in 12 units 
horizontal (4:12). access to the roof shall be 
provided by means of a stairway, an alternating 
treadstmr in accordance with 780 CMR 1014.6.6 or 
a ladder and trap door. The ladder shall not be on 
the exterior of the building. Where the roof is used 
as a roof garden or for other habitable purposes, 
sufficient stairways shall extend to the roof to 
provide the necessity exit facilities from the roof as 
required for such occupancy. Roof trap doors shall 
be constructed to comply with 780 CMR 1510.2. 

1027.1.1 Optional stairway or ladder: In 

buildings not required to have a stairway, 
alternating tread stair or ladder to the roof, such 
devices, if provided, shall conform to the 
provisions of 780 CMR 1027.0. Ladders placed 
on the exterior of the building shall be of metal 
and, if exceeding 20 feet (6096 mm) in height, 
shall have a protective cage or other safety device. 
The siderails of exterior ladders shall be carried 
over the coping or parapet to serve as handrails. 
Other design details of such exterior ladders are 
subject to approval. 

1027.2 Roof enclosures: stairways extending 
through roofs shall be enclosed in roof structures of 
fireresistance rated construction which conform to 
the requirements of 780 CMR 1510.0. 



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MEANS OF EGRESS 



780 CMR 1028.0 MAINTENANCE OF EXITS 

1028.1 Obstructions: It shall be unlawful to 
obstruct, or reduce in any manner, the clear width of 
any doorway, hallway, passageway or other means 
of egress required by the provisions of 780 CMR. 

1028.2 Maintenance: All exterior stairways and 
fire escapes shall be kept free of snow and ice. 
Exterior stairways and fire escapes constructed of 
materials requiring the application of weather 
protecting products, shall have these products 
applied in an approved manner and shall be applied 
as often as necessary to maintain the stairways and 
fire escapes in safe condition where corrodible 
structural parts of such stairways and fire escapes 



tie directly into the building structural system, all 
joints shall be sealed, as necessary, to prevent 
water from damaging or corroding structural 
elements. 

1028.3 Testing and Certification: All exterior 
bridges, steel or wooden stairways, fire escapes and 
egress balconies shall be examined and/or tested, 
and certified for structural adequacy and safety 
every five years, by a Massachusetts registered 
professional engineer, or others qualified and 
acceptable to the building official; said engineer or 
others shall then submit an affidavit to the building 
official. 



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CHAPTER 12 



INTERIOR ENVIRONMENT 



780 CMR 1201.0 GENERAL 

1201.1 Scope: The provisions of 780 CMR 12 shall 
govern the means of light, ventilation, sound 
transmission control and rat-proofing required in all 
buildings. 

1201.2 Buildings on same lot: Where more than one 
building is hereafter placed on a lot, or where a 
building is placed on the same lot with existing 
buildings and the several buildings are treated as a 
single structure for the purposes of 780 CMR 12, 
equivalent uncovered lot area or other adequate 
sources of light and ventilation shall be provided for 
all occupied buildings. 

780 CMR 1202.0 DEFINITIONS 
1202.1 General: The following words and terms 
shall, for the purposes of 780 CMR 12 and as used 
elsewhere in 780 CMR, have the meanings shown 
herein. 

Attic: The space between the ceiling beams of the 
top story and the roof rafters. 

Court: An open, uncovered and unoccupied space 
on the same lot as a building where such space is 
enclosed wholly or partly by buildings, walls or 
other enclosing devices (see 780 CMR 1212.0). 
Inner: Any court enclosed wholly by buildings, 

walls or other enclosing devices. 
Outer: A court extending to and opening upon a 

street, public alley or other approved open 

space that is not less than 15 feet (4572 mm) 

wide, or upon a required yard. 

Court height: The vertical distance from the lowest 
level of the court to the mean height of the top of 
the enclosing walls. 

Court width: As applied to an inner court, means 
the least horizontal dimension. As applied to an 
outer court, means the shortest horizontal 
dimension measured in a direction substantially 
parallel with the principal open end of such court. 

Habitable space: Space in a structure for living, 
sleeping, eating or cooking. Bathrooms, toilet 
compartments, closets, halls, storage or utility 
spaces and similar areas are not considered 
habitable spaces. 

Occupiable space: A room or enclosed space 
designed for human occupancy in which 
individuals congregate for amusement, 



educational or similar purposes, or in which 
occupants are engaged at labor; and which is 
equipped with means of egress and light and 
ventilation facilities meeting the requirements of 
780 CMR. 

Vapor retarder: A material having a perm rating of 
1.0 or less, such as foil, plastic sheeting, or 
insulation facing, installed to retard the passage of 
water vapor or moisture through the exterior 
envelope. 

Ventilation: The natural or mechanical process of 
supplying conditioned or unconditioned air to, or 
removing such air from, any space. 

Yard: An unoccupied open space other than a court 
(see 780 CMR 1212.0 and 1213.0). 

780 CMR 1203.0 CONSTRUCTION 
DOCUMENTS 

1203.1 General: Construction documents for all 
buildings and structures that are designed for human 
occupancy, other than buildings with occupancies in 
Use Groups 1-1, R-2 and R-3, shall designate the 
number of occupants to be accommodated in the 
various rooms and spaces; where means of artificial 
lighting and ventilation sit required, the application 
shall include sufficient details and description of the 
mechanical system to be installed as herein required 
or as specified in the mechanical code listed in 
Appendix A. 

780 CMR 1204.0 ROOM DIMENSIONS 
1204.1 Ceiling heights: Habitable (spaces) rooms 
other than kitchens shall have a ceiling height of not 
less than seven feet six inches (2286 mm). 
Hallways, corridors, bathrooms, toilet rooms, 
kitchens, laundry rooms and habitable basements 
that are only used as recreation rooms shall have a 
ceiling height of not less than seven feet (2134 mm) 
measured to the lowest projection from the ceiling. 

Exception: In occupancies in Use Group R-3, the 
maximum projection below the required ceiling 
height of beams and girders spaced not less than 
four feet (1219 mm) on center shall be six inches 
(152 mm). 

1204.1.1 Use Groups A, B, E and M: A clear 
height from the finished floor to the finished 
ceiling or lowest projection of not less than seven 
feet six inches (2286 mm) shall be provided in all 
exit access and occupiable rooms of structures of 
Use Groups A B, E and M. 



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1204.1.2 Sloping ceilings: If any room in a 
building has a sloping ceiling, the prescribed 
ceiling height for the room is required in one-half 
the area thereof. Any portion of the room 
measuring less than five feet (1524 mm) from the 
finished floor to the finished ceiling shall not be 
included in any computation of the minimum area 
thereof. 

1204.13 Furred ceilings: If any room has a 
furred ceiling, the prescribed ceiling height is 
required in two-thirds of the area thereof, but the 
height of the furred ceiling shall not be less than 
seven feet (2 1 34 mm). 

1204.2 Floor area: Habitable rooms, except 
kitchens, shall have an area of not less than 70 
square feet (6.51 nr). 

1204.3 Width: A habitable room other than a 
kitchen shall not be less than seven feet (2134 mm) 
in any dimension. 

780 CMR 1205.0 LIGHT AND VENTILATION 
REQUIRED 

1205.1 Light required: Every room or space 
intended for human occupancy shall be provided 
with natural or artificial light. 

1205.1.1 Bathroom and toilet room lighting: 

Every bathroom and toilet room shall be provided 
with artificial light. The illumination shall have 
an average intensity of three footcandles (32.29 
lux) measured at a level of 30 inches (762 mm) 
above the floor. 

1205.2 Ventilation required: Every room or space 
intended for human occupancy shall be provided 
with natural or mechanical ventilation. 

1205.2.1: Every bathroom containing a bathtub 
and/or shower shall be equipped with a 
mechanical exhaust fan and associated 
ductwork with the fan exhausting, at such rates 
as specified in the BOCA National Mechanical 
Code/1993 as referenced in Appendix A. Passive 
ventilation methods such as openable windows 
shall not substitute for ventilation. Such 
bathroom exhaust shall vent directly to the 
outside and no exhaust vent shall terminate in 
attics or other interior portions of the building. 
Note: See also 105 CMR 410.000 

780 CMR 1206.0 NATURAL LIGHT 
1206.1 General: Should natural lighting be chosen 
as a lighting option, in the application of the 
provisions of 780 CMR 12, the standard of natural 
light for all habitable and occupiable rooms, unless 
otherwise specifically required by the provisions of 
780 CMR 4 for special occupancies, shall be based 
on 250 footcandles (2691 lux) of illumination on the 



vertical plane adjacent to the exterior of the light- 
transmitting device in the enclosure wall and shall 
be adequate to provide an average illumination of six 
footcandles (64.58 lux) over the area of the room at 
a height of 30 inches (762 mm) above the floor 
level. 

1206.2 Minimum glazing area: Every room or 
space intended for human occupancy shall have an 
exterior glazing area of not less than 8% of the floor 
area. Natural light shall be provided by glazing 
areas that open onto courts or yards which comply 
with the requirements of 780 CMR 1212.0, or by 
other approved means. 

1206.2.1 Adjoining spaces: Where natural light 
for rooms or spaces without exterior glazing areas 
is provided through an adjoining room, the 
unobstructed opening to the adjoining room shall 
be at least 8% of the floor area of the interior 
room or space, but not less than 25 square feet 
(2.33 nr). The exterior glazing area shall be 
based on the total floor area being served. 

1206.3 Stairways: Interior stairways shall be 
provided with an exterior glazing area of not less 
than ten square feet (0.93 m 2 ) on every floor through 
which the stairway passes. 

1206.4 Hallways: Natural light shall be capable of 
penetrating the full length of the hallway. 

780 CMR 1207.0 ARTIFICIAL LIGHT 
1207.1 General: Should artificial lighting be 
chosen as a lighting option, artificial light shall be 
capable of providing the minimum illumination 
specified for natural light. 

780 CMR 1208.0 NATURAL 
VENTILATION 

1208.1 General: Should natural ventilation be 
chosen as a ventilation option, natural ventilation of 
an occupied space shall be through windows, doors, 
louvers or other natural openings to the outdoor air. 

Exception: All occupancies shall have 
mechanical ventilation in bathrooms and toilet 
rooms as specified in 780 CMR 1205.2.1. 

1208.2 Ventilation area required: The minimum 
openable area to the outdoors shall be 4% of the 
floor area being ventilated. 

1208.2.1 Adjoining spaces: Where rooms and 
spaces without openings to the outdoors are 
ventilated through an adjoining room, the 
unobstructed opening to the adjoining room shall 
be at least 8% of the floor area of the interior 
room or space, but not less than 25 square feet 
(2.33 m 2 ). The ventilation openings to the 
outdoors shall be based on the total floor area 
being ventilated. 



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1208.2.2 Openings below grade: Openings 
below grade shall be acceptable for natural 
ventilation provided that the outside horizontal 
clear space measured perpendicular to the opening 
is 1 !4 times the depth below the average adjoining 
grade. 

12083 Contaminants exhausted: Contaminants in 
the breathing atmosphere shall be exhausted to the 
outdoor air in accordance with the mechanical code 
listed in Appendix A . 

1208.4 Openings onto yards or courts: Natural 
ventilation shall be provided by openings onto yards 
or courts which comply with the requirements of 
780 CMR 1212.0, or by other approved means. 

780 CMR 1209.0 MECHANICAL 
VENTILATION 

1209.1 General: Should mechanical ventilation be 
chosen as the ventilation option, mechanical 
ventilation shall conform to the requirements of the 
mechanical code listed in Appendix A. 
Note: Also see 780 CMR 1205.2.1 

780 CMR 1210.0 VENTILATION OF 
SPECIAL SPACES 

1210.1 Roof spaces: Enclosed attics and enclosed 
rafter spaces formed where ceilings are applied 
directly to the underside of roof rafters, shall have 
cross ventilation for each separate space by 
ventilation openings that are protected against the 
entrance of rain and snow. The openings shall be 
covered with corrosion-resistant mesh not less than 
Vi inch (6 mm) nor more than 14 inch ( 1 3 mm) in any 
direction. 

1210.1.1 Ventilating area: The minimum 
required net free ventilating area shall be 1/150 of 
the area of the space ventilated, except that the 
minimum required area shall be reduced to 1/300, 
provided that: a vapor retarder having a 
permeance not exceeding one perm is installed on 
the warm side of the ceiling; or at least 50%, and 
not more than 80%, of the required ventilating 
area is provided by ventilators located in the 
upper portion of the space to be ventilated at least 
three feet (914 mm) above eave or cornice vents, 
with the balance of the required ventilation 
provided by eave or cornice vents. 

1210.2 Crawl spaces: Crawl space areas, other than 
those used as an underfioor plenum, shall be 
ventilated by an approved mechanical means or by 
openings in exterior foundation walls. Openings 
shall be located as close to corners as practicable and 
shall provide cross ventilation on at least two 
approximately opposite sides. The openings shall be 
covered with corrosion-resistant mesh not less than 
X A inch (6 mm) nor more than 14 inch (13 mm) in any 
direction. 



1210.2.1 Opening size: Openings shall have a net 
area of not less than one square foot (0.093 m 2 ) 
for each 150 square feet (13.95 m 2 ) of foundation 
space. Where an approved vapor retarder is 
installed over the ground surface, the required net 
area of openings shall be reduced to 0.1 square 
foot (0.093 m 2 ) for each 150 square feet (13.95 
m 2 ) and vents shall have manually operable 
louvers. 

12103 Alternative mechanical ventilation: 

Enclosed attic, rafter and crawl spaces which are not 
ventilated as herein required shall be equipped with 
a mechanical ventilation system conforming to the 
requirements of the mechanical code listed in 
Appendix A. 

780 CMR 1211.0 ACCESS TO CRAWL 
SPACES AND ATTICS 

1211.1 Access to crawl spaces: Access shall be 
provided to crawl spaces by an opening not less than 
18 inches (457 mm) by 24 inches (610 mm). Such 
access, if common to conditioned space, shall be 
weatherstripped and shall close tightly. 

1211.2 Access to attics: An opening not less than 22 
inches by 30 inches (559 mm by 762 mm) with 
ready access thereto shall be provided to any attic 
area having a clear height of over 30 inches (762 
mm). Such access, if adjoining conditioned space, 
shall be weatherstripped, and close tightly. All 
such access opening framing joints shall be 
caulked, gasketed, weatherstripped, foamed or 
otherwise sealed to limit infUtration/exfiltration. 
Where doors or other openings are installed in attic 
draftstopping, such doors shall be self-closing and 
be of approved materials as specified in 780 CMR 
121 1.0, and the construction shall be tightly fitted 
around all pipes, ducts or other assemblies piercing 
the draftstopping. 

780 CMR 1212.0 COURTS AND YARDS 

1212.1 General: All courts and yards required to 
serve rooms for natural light or ventilation purposes 
shall comply with the requirements of 780 CMR 
1212.0. 

1212.2 Minimum width: Every such court or yard 
shall have a minimum width of three inches (76 mm) 
for each one foot (305 mm) of height or fraction 
thereof, but not less than five feet (1524 mm) for 
outer courts and twice these values for inner courts. 

1212.2.1 Irregular court or yard width: In the 

case of irregular or gore-shaped courts or yards, 
the average width shall not be less than the 
required width of a court in accordance with 
780 CMR 1212.2, but shall not be less than five 
feet (1 524 mm) at any point. 



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12113 Area of court: The cross-sectional area of a 
required court shall not be less than Wi times the 
square of its width; nor shall the length of any court 
be more than twice its width. 

1212.4 Access to court: A door or other means of 
access shall be provided at the bottom of every court 
that is not otherwise provided with convenient 
access for purposes of cleaning. 

1212.5 Air intakes: Every court which serves one or 
more habitable rooms and which does not open for 
its full height on one or more sides to a street or 
legal yard, shall be connected at or near the bottom 
with a street or yard by a horizontal intake or 
passage of fireresistance rated construction. Such 
intake or passage shall have a cross-sectional area of 
not less than 21 square feet (1.95 m 2 ) and shall 
remain fully open at both ends and unobstructed for 
its foil size and length, except that grilles of 
noncombustible construction are permitted at the 
ends of the intake. 

1212.5.1 Fireresistance rating: The walls, floors 
and ceilings of such intakes or passages shall have 
a fireresistance rating of not less than two hours in 
buildings of Type 1, 2, 3 or 4 construction and not 
less than a one-hour fireresistance rating in 
buildings of Type 5 construction. 

1212.6 Court walls: Where, in the opinion of the 
code official, windows facing on courts do not 
receive adequate direct light by reason of peculiar 
arrangement or orientation, the code official shall 
require the walls to be constructed of light-colored 
masonry, or to be painted and maintained a light 
color to furnish additional reflected light, or shall 
require other approved means of providing 
additional light. 

1212.7 Court drainage: The bottom of every court 
shall be properly graded and drained to a public 
sewer or other approved disposal system complying 
with the plumbing code listed in Appendix A; and 
shall be paved with concrete or other non-absorbent 
material where required by the code official. 

780 CMR 1213.0 OBSTRUCTION OF 
COURTS AND YARDS 

1213.1 Permissible projections: Every required 
court and yard shall remain unobstructed for its 
required area and full height, except for the 
projections permitted in 780 CMR 1213.2 through 
1213.7. 

1213.2 Maximum encroachment: A part of any 
building or structure shall not extend into side 
courts, inner courts or yards required for light and 
ventilation of habitable and occupiable rooms by the 
zoning law or other statutes controlling building 



construction. The encroachment shall not exceed 
20% of the legal area of the yard or court which is 
required for light and ventilation purposes. 

1213.3 Accessories: In Use Groups R and I, clothes 
poles, arbors, garden trellises and other such 
accessories shall not be prohibited in the open 
spaces at ground level. 

1213.4 Roof eaves: Roof eaves shall not project 
more than three feet (914 mm) beyond the face of 
the wall. 

1213.5 Steps and architectural features: Steps, 
window sills, belt courses and similar architectural 
features, as well as rain leaders and chimneys, shall 
not project more than two feet (610 mm) beyond the 
face of the wall. 

1213.6 Exterior stairways and fire escapes: 

Outside stairways, smokeproof tower balconies, fire 
escapes or other required elements of a means of 
egress shall not project more than four feet (1219 
mm) beyond the face of the wall. 

1213.7 Motor vehicle parking: Where approved, 
required court and yard areas for automobile parking 
spaces or private garages not exceeding one story in 
height where accessory to and only for the occupants 
of a Use Group R occupancy are permitted, provided 
that required windows for light and ventilation are 
not obstructed thereby. 

780 CMR 1214.0 SOUND TRANSMISSION 
CONTROL IN RESIDENTIAL BUILDINGS 

1214.1 Scope: 780 CMR 1214.0 shall apply to all 
common interior walls, partitions and floor/ceiling 
assemblies between adjacent dwelling units or 
between dwelling units and adjacent public areas 
such as halls, corridors, stairs or service areas in all 
occupancies in Use Group R. 

1214.2 Air-borne noise: Walls, partitions and 
floor/ceiling assemblies separating dwelling units 
from each other or from public or service areas shall 
have a sound transmission class (STC) of not less 
than 45 for air-bome noise when tested in 
accordance with ASTM E90 listed in Appendix A. 
This requirement shall not apply to dwelling unit 
entrance doors; however, such doors shall be tight 
fitting to the frame and sill. 

1214.3 Structure-borne sound: Floor/ceiling 
assemblies between dwelling units or between a 
dwelling unit and a public or service area within the 
structure shall have an impact insulation class (DC) 
rating of not less than 45 when tested in accordance 
with ASTM E492 listed in Appendix A. 



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ENERGY CONSERVATION 



780 CMR 1306.0 BUILDING INSULATION 
SPECIFICATIONS 

1306.1 Scope: 780 CMR 1306.0 applies to all 
buildings. 

1306 2 General: Insulating materials must conform 
to the Federal Specifications (F.S.), the American 
Society for Testing Materials (ASTM) Test 
Standards, or the Code of Federal Regulations (CFR) 
as listed in Table 1306.2. 

Table 1306.2 
INSULATION MATERIALS STANDARDS 



Material 


Standard 


Mineral Fiber 




blanket/batt 


ASTMC665-91 


loose-fill 


ASTM C-764-94 


Mineral Cellular 




perlite 


ASTMC549-81/R19S6 


vermiculite 


ASTM C516-80/R1 990 


perlite board 


ASTM C728-91 


cellular glass block 


ASTM C552-91 


Organic Fiber 




cellulose fiber board 


ASTM C208-94 


cellulose loose fill 


16 CFR Part 1209 


Organic Cellular 




polystyrene board 


ASTM C578-92 


urethane board 


ASTMC59I-85 


flexible unicellular 


ASTM C534-94 


polyurethane or polyiso- 




cyanurate with foil face 


ASTM C-1289-95 


polyurethane or polyiso- 




cvanurate with felt face 


ASTM C-1289-95 



13063 Moisture control: The design of buildings 
for energy conservation shall not create conditions 
of accelerated deterioration from moisture 
condensation (additionally, see 780 CMR 12 for 
attic and under-floor space ventilation). 

1306.4 Installation: 

1306.4.1 Recessed light fixtures: Only IC labeled 
recessed lights allowing direct contact with 
insulating materials shall be used in areas 
separating conditioned and unconditioned spaces. 

1306.4.2 High heat sources: A clearance of three 
inches from any high heat source, including but 
not limited to chimneys, flues and vents, shall be 
maintained for combustible insulating materials. 

1306.4.3 Urea formaldehyde foams: Urea 
formaldehyde foams shall not be used in any 
building. 

1306.4.4 Walls: Batt/blanket insulation with a 
vapor barrier attached shall be stapled to the 
winter warm sides or faces of wall studs at 
intervals of eight inches on center vertically. 
Where batt/blanket insulation is of a "friction fit" 
design and a poly vapor barrier is employed, the 
vapor barrier shall be affixed to the interior face 
of the wall studs (winter warm side) in accordance 



with the insulation 
recommendations. 



manufacturer's 



1306.4.5 Cavities: All cavities between rough 
framing and door and window heads, jambs, and 
sills shall be filled with insulation and covered 
with a vapor barrier meeting the criteria of 
780 CMR 1307. 

1306.4.6: 

1306.4.6.1 Low rise residential buildings/ 
perimeter insulation: Perimeter insulation for 
slab on grade construction in buildings of Use 
Group R of three stories or less shall be in- 
stalled so that the concrete to concrete contact 
between the foundation wall and the floor slab 
is broken and the insulation extends downward 
the thickness of the slab and then extends four 
feet vertically down from, or four feet 
horizontally beneath, the floor slab. Perimeter 
insulation may be installed in alternative 
locations if installed in a manner to thermally 
isolate the floor from the exterior. 

1306.4.6.2 Commercial and high rise 
residential buildings/perimeter insulation: 
Perimeter Insulation for slab on grade con- 
struction in buildings of Use Group R of more 
than three stories or in buildings of other Use 
Groups shall be installed in a manner 
consistent with that specified in 780 CMR 
1306.4.6.1, except that alternate locations and 
dimensions may be permitted by the provisions 
of 780 CMR 1314. 

1306.4.7 Foundation wall insulation: 

1 . For interior foundation wall insulation, the 
entire gross wall area extending from the top of 
the band joist to the floor shall be insulated in 
accordance with Table 1309.1 for low rise 
residential buildings or in accordance with the 
requirements of 780 CMR 1314.0, for other 
than low rise residential buildings. 

2. For exterior foundation wall insulation, the 
insulation shall extend from the top of the 
foundation to a minimum of eight feet below 
grade or to foundation footing, whichever is 
less. All exterior basement and foundation wall 
insulation shall be suitably protected so as to 
prevent deterioration caused by ultra-violet 
light or insect damage in accordance with 
manufacturer's instructions. 

1306.5 Fire safety relating to insulation: See 

780 CMR 722 and 2603. 

1306.6: Labeling 

1306.6.1 Baft and blanket and rigid board: 

Insulation of this type shall be labeled according 
to type, manufacturer or distributor, R value of the 
insulation at the labeled thickness, and material 
specification as listed in Table 1306.2. 



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211 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



1306.6.2 Blown, poured, or sprayed on types: 

Insulation of these types shall be labeled 
according to type, manufacturer, recommended 
insulation density, thickness and R value, fire 
safety requirements and material specifications as 
listed in Table 1306. 

780 CMR 1307.0 AIR INFILTRATION 
AND MOISTURE CONTROL 

1307.1: 780 CMR 1307.0 applies to all buildings. 

1307.2 Vapor barriers: A vapor barrier of one point 
zero (1.0) perm or less shall be installed on the 
winter warm side of walls, ceilings and floors 
enclosing a conditioned space. 

Exception: Vapor barriers may be eliminated 
with adequate ventilation as defined in 780 CMR 
12 (See 780 CMR 1210). 

13073 Taping: All tears in the vapor barrier shall 
be taped or sealed. 

1307.4 Air leakage for all buildings: 

1 . The requirements of this section shall apply 
to those locations separating outdoor ambient 
conditions from interior spaces that are heated 
and/ or mechanically cooled and are not applicable 
to the separation of interior conditioned spaces 
from each other. 

2. The following openings in the exterior 
building envelope shall be caulked, gasketed, 
weatherstripped, foamed or otherwise sealed to 
limit infiltration: 

a. Around window and door frames, between 
the unit and the rough framing; 

b. Between all exterior wall soleplates and the 
structural floor, using two rows of caulking or 
alternate approved procedure; 

c. Over all framing joints where floors over 
conditioned spaces intersect exterior walls, 
using a water vapor permeable infiltration 
barrier or alternate approved technique; 

d. Around openings for plumbing, electricity, 
telephone and gas lines in walls, ceilings and 
floors; 

e. At openings in the ceiling, such as where 
the ceiling panels meet interior and exterior 
walls, at exposed beam and masonry fireplaces; 

f. At the mudsill, in addition to normal sill 
sealer in conditioned basements and 
conditioned crawlspaces; and, 

g. At all other openings in the exterior 
building envelope. 

h. See additional requirements for attic and 
crawl space access, 780 CMR 1310.0. 

3. Electrical outlet plate gaskets shall be 
installed on all receptacle, switch, or other 
electrical boxes in walls separating conditioned 
from unconditioned space. 



4. Heating ducts shall be sealed at all joints and 
comers as specified in 1310.0. 

5. Interior openings between conditioned and 
non-conditioned space shall be sealed using 
sealant, closed-cell gasket material, permanent 
tape, or another method that limits infiltration. 

1307.5 Air leakage requirements for fenestration 
and doors: 

1307.5.1 Windows shall have an air leakage rate 
of 0.34 cfrn per foot of operable sash crack in 
accordance with the following standards as 
applicable: 

ANSI/AANA 101-88, Aluminum Prime 
Windows, 

ASTM D 4099-89, Specifications for 
Polyvinylchloride (PCV) Prime Windows, 
ANSI/NWWDA I.S. 2-87, Wood Window 
Units (Improved PerformanceRating Only). 
AAMA 101V-1986, Polyvinyl Chloride (PVC) 
Prime Windows and Sliding Glass Doors, 
AAMA 1701.2-1985 Prime Windows and 
Sliding Glass Doors/Manufactured Housing 

1307.5.2 Sliding Doors shall meet one of the 
following standards for air leakage: 

ANSI/AANA 101-88, Aluminum Sliding Glass 

Doors, or 

ANSI/NWWDA I.S. 3-88, Wood Sliding 

Patio Doors. 

AAMA 101V-1986, Polyvinyl Chloride (PVC) 

Prime Windows and Sliding Glass Doors, 

AAMA 1701.2-1985, Prime Windows and 

Sliding Glass Doors/Manufactured Housing 

1307.5.3 Commercial entrance swinging or 
revolving doors shall limit air leakage to a rate not 
to exceed 1.2 cfrn per square foot of door area, at 
standard test conditions. 

1307.5.4 Residential swinging doors shall limit 
air leakage to a rate not to exceed 0.5 cfrn per 
square foot of door area, at standard test 
conditions. 

1307.5.5 Spaces that have regular high volume 
traffic through the building envelopes such as 
retail store entrances and loading bays, shall be 
designed accounting for the steady state air 
transfer between conditioned and unconditioned 
or exterior space. 

780 CMR 1308.0 COMPONENT DESIGN 

1308.1 Scope: All low rise residential buildings that 
are heated or mechanically cooled shall be 
constructed so as to provide the required thermal 
performance of the various components listed in 
780 CMR 1308.0 through 131 1.0, and to provide the 
lighting switching requirements of 780 CMR 
1313.2.2.1. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



All commercial and high rise residential buildings 
that are mechanically heated and cooled shall be 
constructed so as to provide the required thermal and 
lighting system performance of the various 
components listed in 780 CMR 1308.0, and 1310.0 
through 1314.0, as applicable. 

1308.2 Thermal Performance: Information on 
thermal properties, performance of building 
envelope sections and components, and heat transfer 
shall be obtained from laboratory or field test 
measurements, or when information is not available 
from these sources, then such information may be 
obtained from the ASHRAE Handbook, 1993 
Fundamentals. 

When laboratory or field test measurements are 
used, they shall be conducted in accordance with 
ASTM standards: 

1. C-177-85/R1993, Standard Test Method for 
Steady-State Thermal Transmission Properties by 
Means of the Guarded Hot Plate, 

2. C-5 18-91, Steady-State Thermal Transmission 
Properties by Means of the Heat Flow Meter, 

3. C-236-89/R1993, Standard Test Method for 
Steady-State Thermal Performance of Building 
Assemblies by Means of a Guarded Hot Box, or 

4. C-976-90, Thermal Performance of Building 
Assemblies by Means of a Calibrated Hot Box. 

To determine thermal conductance through window 
assemblies the following ASTM or American 
Architectural Manufacturers Association (AAMA), 
or National Fenestration Rating Council (NFRC) 
standards shall be used. 

1. AAMA 1503.1-1988, Test Method of Thermal 
Transmittance of Windows, Doors and Glazed 
Wall Sections, 

2. ASTM C-236-89/R1993, Standard Test 
Method for Steady-State Thermal Performance of 
Building Assemblies by Means of Guarded Hot 
Box, or 

3. ASTM C-976-90, Thermal Performance of 
Building Assemblies by Means of a Calibrated 
Hot Box. 

4. NFRC 100-91 Procedure for Determining 
Fenestration Product Thermal Properties. 

When using any of the four test procedures above, a 
15 mile per hour wind shall be applied perpendicular 
to the glazing and applied in other definitions as 
required by the subject standard. 

1308.3 Gross wall area: For the purposes of 
780 CMR 13, the gross area of exterior walls 
consists of all opaque wall areas, including 
foundation walls, areas between floor spandrels, 
peripheral edges of floors, window areas including 
sash, and door areas, where such surfaces enclose a 
heated or mechanically cooled space including 



interstitial areas between two such spaces, but 
excluding vents, grills and pipes. 

1308.4 Roof assembly: For the purpose of 
780 CMR 13, a roof assembly shall be considered as 
all components of the roof/ceiling envelope through 
which heat flows, thereby creating a building 
transmission heat loss or gain, where such assembly 
encloses a heated or mechanically cooled space. 

1308.4.1 Gross roof area: The gross area of a 
roof assembly consists of the total interior surface 
of such assembly, including skylights, exposed to 
the heated or mechanically cooled space. 

1308.4.2 Ceiling plenums: Where air ceiling 
plenums are employed, the roof/ceiling assembly 
shall: 

1. for thermal transmittance purposes not 
include the ceiling proper nor the plenum space 
as part of the assembly; and 

2. for gross area purposes be based upon the 
interior face of the upper plenum surface. 

1308.5 Swimming pools: All pool enclosures shall 
be designed in accordance with the 1 993 edition of 
the ASHRAE Applications Handbook. 

Such pool enclosures shall have a maximum 
overall (roof/gables/sidewalls) U value of 0.25. 

780 CMR 1309.0 EXTERIOR ENVELOPE 

REQUIREMENTS FOR LOW RISE 

RESIDENTIAL BUILDINGS 

1309.1 Criteria for low rise residential buildings: 

The following requirements shall apply to all 
buildings and structures or portions thereof in use 
groups R-l, R-2, R-3, and R-4 (hotels, multi-family, 
and one- and two-family) that are heated or 
mechanically cooled and not more than three stories 
high. 

1. All buildings in these use groups shall 
conform to the thermal transmittance values in 
Table 1309.1 or shall be designed to satisfy the 
requirements of 780 CMR 1309.3 or shall be 
designed to satisfy the requirements of 780 CMR 
1315.0 or 780 CMR 1316.0, as applicable.. 

2. An overall Uo value of 0.167 for structures 
heated by oil, gas or heat pumps, or an overall Uo 
of 0.105 for structures heated by electric 
resistance may be used for the combination of 
walls, doors and windows containing heated space 
in lieu of the separate U values listed for walls, 
doors and windows. The overall Uo of 0.167 or 
0.105 shall be used when the windows exceed 
15% of the gross exterior wall area. 

3. For purposes of 780 CMR 1309.0 only, 
framing members shall not be included in the 
calculations of R and U values. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 1309.1 

MAXIMUM U VALUES AND MINIMUM 

R VALUES OF WALLS, ROOF/CEILING, 

AND FLOORS FOR RESIDENTIAL 

BUILDINGS OF 780 CMR 1309.1 



Element 


Description 


U 
Value 


Total 
R Value 


Notes 


Walls 


All wall construction 
containing heated or 
mechanically cooled 
space 


0.08 


12.5 


1 




Electric resistance 
heating 


0.05 


20.0 


1 


Foundation 
Walls 
Including 
Band Joist 


Containing heated or 
mechanically cooled 
space 


0.08 


12.5 






Containing unheated 
space 


0.08 


12.5 


4 


RootfCeiling 
Assembly 


All roof construction 
containing heated or 
mechanically cooled 
space 


0.033 


30.0 




Windows 


All construction 
enclosing heated or 
mechanically cooled 
space 


0.65 


1.54 


2 




Electric resistance 
heating 


0.40 


2.50 


6,7 


Doors 


All construction 
enclosing heated or 
mechanically cooled 
space 


0.40 


2.50 




Floors 


Floor sections over 
areas exposed to 
outside air or 
unheated space 


0.05 


20.0 


3 




Slab on grade 
beneath conditioned 
space 




10.0 


5 



Note 1: These values may be used when the doors and 
windows do not exceed 15% of the gross exterior wall 
area. When doors and windows exceed 15% of the gross 
wall area, see 780 CMR 1309.1, item 2. 

Note 2: Double glazed primary windows or single 
glaze primary windows with storm windows will satisfy 
the required U value of 0.65. 

Note 3: Insulation may be omitted from floors over 
unheated areas when foundation walls are provided with 
a U value of 0.08. 

Note 4: The U value requirement of 0.08 for 
foundation walls may be omitted when floors over 
unheated spaces are provided with a U value of 0.05. 

Note 5: R value for perimeter insulation (see 
780 CMR 1306.4.6). 

Note 6: When doors and windows do not exceed 1 5% 
of the gross exterior wall area, this value may be used. 
When doors and windows do not exceed 1 0% of the gross 
exterior wall area, windows having a U value of 0.65 (R 
value of 1.54) may be used. When windows and doors 
exceed 1 5% of the gross exterior wall area, see 780 CMR 
1309.1, item 2. 

Note 7: Double glazed primary windows with storm 
windows or most triple glazed primary windows or 
double glazed low emissiviry primary windows will 
typically satisfy the required U value of 0.40. 



1309.2 Calculation of Uo: Separate overall thermal 
transmittance values shall be calculated for wall 
assemblies, roof/ceiling assemblies, and floors. 
Equation 1 is provided as an example of the Uo 
calculation for walls. 



Uw Aw + Ug Ag = Ud Ad 



Equation 1: 

Overall wall Uo - 

A 

Where: 
Uo = average or combined transmittance of the 

gross exterior wall; (Btu/hr-ft -°F). 
Aw = gross exterior wall area; (ft ). 
Uw = thermal transmittance of the components of 

the opaque wall; (Btu/hr-ft''- F). 
Aw = opaque wall area; (ft ). 
Ug= thermal transmittance of the windows; 

(Btu/hr-ft 2 - °F). 
Ag = window area; (ft ). 
Ud= thermal transmittance of the door or similar 

opening; (Btu/hr-ft -°F). 
Ad = door area; (ft ). 

NOTE: Where Ug is determined by test, it shall be 
calculated using the procedure contained in 
780 CMR 1314.3.2.2 including calculation for 
framing, sash, edge effects, and all other factors 
pertinent to the complete window assembly. 

13093 Alternates: The stated Uo (or U) value of 
any one assembly, such as roof/ceiling, wall, or 
floor, may be increased and the Uo (or U) value for 
other components decreased provided that the 
overall heat gain or loss for the entire building 
envelope does not exceed the total resulting from 
conformance to the stated Uo (or U) values. 

780 CMR 1310.0 HEATING, VENTILATING 
AND AIR CONDITIONING 

(HVAQ SYSTEMS 

1310.1 Scope: 780 CMR 1310.0 covers the 
determination of heating and cooling loads, systems 
performance, and control requirements for all build- 
ings. Criteria are established for insulating HVAC 
systems and for duct construction. 

Exception: Special applications, including but not 
limited to hospitals, museums, laboratories, rooms 
containing thermally sensitive equipment such as 
computers, open refrigerated display cases, may 
be exempted from the requirements of 780 CMR 
1310.0, when calculations and requirements are 
submitted establishing the unique environmental 
criteria that exist. 

1310.2 Calculation of heating and cooling loads: 

1310.2.1 Calculation procedures: For the 

purpose of sizing HVAC systems, heating and 
cooling design loads shall be determined in 
accordance with techniques recommended in the 



21^ 



780 CMR - Sixth Edition 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 

Table 1310.12 

MINIMUM PIPE INSULATION 1 

INSULATION THICKNESS IN INCHES FOR PIPE SIZES (Note 2) 



Piping 
System 
Types 


Fluid 

Temperature 
Range 

(°F) 


Runouts " 
Up to 2" 


1" 
&less 


1V4" 

to 2" 


2'/=" 
to 4" 


5" 
to 6" 


8" 
and larger 


Insulation 
Conductivity 


Heating Systems 

Steam & Hot 

Water 


(B-in/F-hr-sf) 
at temp °F 


High 
Press/Temp. 


351-450 


1.5 


2.5 


2.5 


3.0 


3.5 


3.5 


0.32 @ 250° 


Med. 
Press/Temp. 


251-350 


1.5 


2.0 


2.5 


2.5 


3.5 


3.5 


0.29 @ 200° 


Low 

Press./Temp. 


201-250 


1.0 


1.5 


1.5 


2.0 


2.0 


3.5 


0.27 @ 150° 


Low Temp. 


141-200 


0.5 


1.5 


1.5 


1.5 


1.5 


1.5 


0.25 @ 125° 


Low Temp. 


105-140 


0.5 


1.0 


1.0 


1.0 


1.5 


1.5 


0.24 @ 100° 


Steam 
Condensate 
(for feedwater) 


Any 


1.0 


1.5 


1.5 


2.0 


2.0 


2.0 


0.27 @ 150° 


COOLING 
SYSTEMS 




Chilled Water 


40-55 


0.5 


0.5 


0.75 


1.0 


1.0 


1.0 


0.23® 75' 


Refrigerant or 
Brine 


Below 55 


1.0 


1.0 


1.5 


1.5 


1.5 


1.5 


0.23 @ 75° 



Notes: 

1. Forminirnurri thicknesses of alternative insulation types, see 780 CMR 1310.12.1. 

2. Runouts to individual terminal units not exceeding 12 ft. in length. 

3. The required minimum thicknesses do not consider condensation. Additional insulation and/or vapor barriers may 
be required to prevent condensation. 



780 CMR 1311.0 HEATING, VENTILATING 
AND AIR CONDITIONING EQUWMENT 

1311.1 Scope: 780 CMR 1311.0 applies to all 
buildings. 

1311.2 HVAC equipment performance 
requirements: The requirements of 780 CMR 
1311.0 apply to equipment and component 
performance for heating, ventilating, and air 
conditioning systems. Where equipment efficiency 
levels are specified, data furnished by the equipment 
supplier, or certified under a nationally recognized 
certification program or rating procedure, shall be 
used to satisfy these requirements. 

1311.3 HVAC system combustion heating 
equipment: All gas and oil fired comfort heating 
equipment shall have an Annual Fuel Utilization 
Efficiency (AFUE) not less than the values shown in 
Tables 13 1 1.3 through 1311.5. Equipment types not 
covered in these tables shall show a minimum 
combustion efficiency of 75% at maximum rated 
output. Combustion efficiency is defined as 100% 
minus stack losses in percent of heat input. Stack 
losses are: 

1 . loss due to sensible heat in dry flue gas; 

2. loss due to incomplete combustion; and 

3. loss due to sensible and latent heat in moisture 
formed by combustion of hydrogen in the flue. 



Table 1311.3(a) 

STANDARD RATING CONDITIONS AND 

MINIMUM PERFORMANCE WARM AIR 

FURNACES AND COMBINATION WARM 

Am FURNACES/Am-CONDITIONING UNITS 



Reference 
Standards 


Category 


Rating Condition 


Minimum 
Performance 


10CFR 


Gas-Fired 

<225,000 

Btu/h 


Seasonal Rating 


AFUE 78% 4 
£, 3 80% 


430(B) 


Oil-Fired 

<225,000 

Btu/h 


Seasonal Rating 


AFUE 78% 4 
Ef 80% 


ANSI 


Gas-Fired 

^225,000 

Btu/h 


1. Maximum Rating 
Capacity" 
Steady-State 


£, 5 80% 


Z2 1.47-90 


2. Minimum Rating 
Capacity" 
Steadv- State 


Ef 78% 


UL 727-86 


Oil-Fired 

2225,000 

Btu/h 


1. Maximum Rating 
Capacity" 
Steadv-State 


£, 5 81% 


2. Minimum Rating " 
Capacity" 
Steadv-State 


E, 5 81% 



For SI: °F = 1.8 °C = 32, 1 Btu/h = 0.293 1 W 

1 . Listed in Appendix A 

2. Minimum and maximum ratings as provided for and 
allowed by the unit's controls. 

3. These requirements apply to combination units not 
covered by NAECA (three phase power or cooling 
capacity > 65.000 Btu/h). 

4. This is used to be consistent wth National Appliance 
Energy Conservation Act (NAECA) of 1987 (Public Law 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



219 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



100-12). These values apply to furnace and combination 
units covered by NAECA. 

5. See references for detailed definition of thermal 
efficiency (£,) = (100% minus flue losses). 

Table 13113(b) 
STANDARD RATING CONDITIONS AND 
MINIMUM PERFORMANCE WARM AIR 
DUCT FURNACES AND UNIT HEATERS 



Reference 
Standards 


Category 


Rating Condition 


Minimum 
Performance 


ANSI 


Duct 

Furnaces 
Gas-Fired 


1. Maximum Rating 

2 
Capacity 

Steady-State 


£, 3 78% 4 


ZS3.9-S6 


2. Minimum Rating 
Capacity" 
Steady-State 


£, 3 75% 4 


ANSI 


Unit Heaters 
Gas-Fired 


1. Maximum Rating 
2 
Capacity 

Steady-State 


£, 3 78% 


Z83.8-95 


2. Minimum Rating 
Capacity" 
Steady-State 


£, 3 74% 


UL 731-88 


Unit Heaters 
Oil-Fired 


1. Maximum Rating 
Capacity 
Steady-State 


£, 3 81% 


2. Minimum Rating 
Capacity 
Steady-State 


£, 3 81% 



1. Listed in Appendix A 

2. Provided and allowed by the controls. 

3. E, = themal efficiency, 1 00% minus flue losses, 
reference standard for detailed definition. 



See 



Table 13113(c) 
STANDARD RATING CONDITIONS AND 
MINIMUM PERFORMANCE GAS AND OIL- 
FIRED STEAM AND HOT WATER BOILERS 



Reference 
Standards 


Category 


Rating Condition 


Minimum 
Performance 


10CFR 


Gas-Fired 

<300,000 

Btu/h 


Seasonal Rating 


AFUE 80% 4 ' 5 


430(B) 


Oil-Fired 

<300,000 

Btu/h 


Seasonal Rating 


AFUE 80% 4 


HI 6 


Gas-Fired 

2300,000 

Btu/h 


1 . Maximum Rating 
Capacity 
Steady-State 


£_ 3 80% 


2. Minimum Rating 
2 
Capacity 

Steady-State 


HI 7 


Oil-Fired 

2300,000 

Btu/h 


1 . Maximum Rating 
2 
Capacity 

Steady-State 


£ c 3 83% 


2. Minimum Rating 
2 
Capacity 

Steady-State 


HI 8 


Oil-Fired 

(Residual) 

2300,000 

Btu/h 


1. Maximum Rating 
Capacity 
Steady-State 


E/ 83% 


2. Minimum Rating 
Capacity" 
Steadv-State 



2. Provided and allowed by the controls. 

3. E c = combustion efficiency, 1 00% minus flue losses. 
See reference standard for detailed definition. 

4. To be consistent with National Appliance Energy 
Conservation Act of 1987 (Public Law 100-12). 

5. Except for gas-fired steam boilers for which 
minimum AFUE is 75% 

6. HI = Hydronics Institute, Test & Rating Standard/ 
Heating Boilers- 1982; ANSI Z21. 13-87; ANSI/ASME 
Ptc 4.1-64; UL 795-73. 

7. Hydronics Institute, Test & Rating Standard/ Heating 
Boilers - 1982; ANSI/ASME Ptc 4.1 - 64; UL 726-90 

8. Hydronics Institute, Test & Rating Standard/ Heating 
Boilers - 1982; ANSI/ASME Ptc 4.1 - 64. 

1311.4 HVAC system heating equipment, heat 
pumps heating mode: Heat pumps whose energy 
input is entirely electric shall show a coefficient of 
performance (COP heating, as defined herein) not 
less than the values shown in Table 1 3 1 1 .4. 

1. These requirements apply to, but are not 
limited to, unitary heat pumps (air source) in the 
heating mode, and to packaged terminal heat 
pumps in the heating mode. Field assembled 
unitary heat pumps, consisting of one or more 
components, shall show compliance with 
780 CMR 1311.4 

2. Coefficient of performance heating: the 
ratio of the rate of net heat output to the rate of 
total on-site energy input, expressed in consistent 
units and under designated rating conditions. The 
rate of net heat output shall be defined as the 
change in the total heat content of the air between 
entering and leaving the equipment (not including 
supplementary heat). 

3. Supplementary heater: The heat pump shall 
be installed with a control to prevent 
supplementary heater operation when the heating 
load can be met by the heat pump alone. 
Supplementary heater operation is permitted 
during transient periods, such as start-ups, 
following room thermostat set-point advance and 
during defrost. A two stage thermostat, which 
controls the supplementary heat on its second 
stage, shall be accepted as meeting this 
requirement. The cut-on temperature for the 
compression heating shall be higher than the cut- 
on temperature for the supplementary heat, and 
the cut-off temperature for the compression 
heating shall be higher than the cut-off 
temperature for the supplementary heat. 
Supplementary heat may be derived from any 
source of electric resistance heating or 
combustion heating. 



1 . Listed in Appendix A 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



Table 1311.4 

MINIMUM COP FOR HEAT PUMPS, 

HEATING MODE 



CATEGORY 


PERFORMANCE 


REFERENCE 
STAND ARD(S) 


Air Source, single phase: 
(Cooling capacity less 
than 65,000 Btu/hr) 


Hi-temp 

(47db/43wb); 

(Min. COP = 2.7) 

Low-temp 

(17db/15wb); 

(Min. COP =1.8) 


ARI210/24/-89 


Air Source, three phase: 
(Cooling capacity less 
than 35,000 Btu/hr) 


Hi-temp 

(47db/43wb); 

(Min. COP = 2.7) 

Low-temp 

(17db/15wb); 

(Min. COP =1.8) 




Packaged Terminal Heat 
Pumps 


Min. COP = 2.5 





1311.5 HVAC system equipment, electrically 
operated cooling mode: HVAC system equipment 
as listed below whose energy input in the cooling 
mode is entirely electric shall show a Seasonal 
Energy Efficiency Ratio (SEER) or Energy 
Efficiency Ratio (EER) not less than the values 
shown in Table 131 1.5. 

1311.5.1: These requirements apply to, but are 
not limited to, unitary cooling equipment (air- 
cooled, water-cooled, and evaporatively cooled); 
the cooling mode of unitary heat pumps; and 
packaged terminal air conditioners. 

TABLE 1311.5 
MINIMUM SEER AND EER FOR 
ELECTRICALLY DRIVEN AIR 
CONDITIONING EQUIPMENT 



TYPE 


PERFORMANCE 


REFERENCE 
STAND ARD(S) 


Air, single phase: 
(Cooling capacity 

less than 65,000 

Btu/hr) 


Min. SEER = 7.8 


ARI 210/240-89 


Air, three phase: 
(Cooling capa-city 

less than 65,000 

Btu/hr) 


Min. EER (Hi-temp) = 
6.2 




Air: 

(Cooling capacity 
greater than 
65,000 Btu/hr 
but less than 
135,000 Btu/hr) 


Min. EER (Hi-temp) = 
8.2 




Packaged Terminal 
Heat Pump 

Packaged Terminal 

Air Conditioner 


Min. EER = 7.8 
Min. EER = 7.8 





1311.6 Applied HVAC system components, 
electrically operated cooling mode: HVAC system 
components, as listed in Table 13 1 1 .6, whose energy 
input is entirely electric shall show a coefficient of 
performance (COP) cooling, as defined herein, not 
less than the values shown in Table 1311.6. 

1311.6.1 Coefficient of performance: 

Coefficient of Performance (COP) cooling is the 
ratio of the rate of net heat removal to the rate of 
total energy input, expressed in consistent units 
and under designated rating conditions. 

The rate of net heat removal is defined as the 
difference in total heat content of the water or 
refrigerant entering and leaving the component. 

Total on-site energy input shall be determined 
by combining the energy inputs to all elements 
and accessories of the component, including but 
not limited to compressors, internal circulating 
pumps, purge, and the HVAC system component 
control circuit. 

Table 1311.6 

MINIMUM EER AND COP FOR 

ELECTRICALLY DRIVEN Am 

CONDITIONING SYSTEM COMPONENTS 



Component 


Condensing 
Means 


Coolant 


EER 


COP 


Reference 
Standard 


Self-Contained 
Chillers 


Centrifugal 


Air 


8.2 


2.4 


ARI 550- 
92 


Self-Contained 
Chillers 


Centrifugal 
< 250 Tons 


Water 


16.4 


4.8 


ARI 550- 
92 


Self-Contained 
Chillers 


Centrifugal 
> 250 Tons 


Water 


17.1 


5.0 


ARI 550- 
92 


Self-Contained 
Chillers 


Rotary 


Air 


8.2 


2.4 


ARI 550- 
92 


Self-Contained 
Chillers 


Rotary 


Water 


14.0 


4.1 


ARI 550- 
92 


Self-Contained 
Chillers - with 
Condenser 


Positive 
Displace- 
ment 


Air 


8.9 


2.6 


ARI 590- 
92 


Self-Contained 
Chillers - with 
Condenser 


Positive 
Displace- 
ment 


Water 


12.6 


3.7 


ARI 590- 
92 


Self-Contained 
Chillers - 
without 
Condenser 


Positive 
Displace- 
ment 


Air 


10.1 


3.0 


ARI 590- 
92 


Condenser 
Units 

135,000 Btu/hr 
or Less 




Air 


9.5 


2.8 


ARI 365- 
94 


Condenser 
Units 

1 35,000 Btu/hr 
or Less 




Water 
(Evap) 


12.7 


- 3.7 


ARI 365- 
94 



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221 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



1311.7 HVAC system equipment, heat operated, 
cooling mode: Heat operated cooling equipment 
shall show a coefficient of performance (COP) 
cooling not less than the values shown in Table 
1311.7. These requirements apply to, but are not 
limited to, absorption equipment, engine driven 
equipment, and turbine drive equipment. 

When the refrigeration components are supplied 
by different manufacturers, it shall be the 
responsibility of the system designer to determine 
compliance with these requirements, using data 
provided by the suppliers of the elements. 

Table 1311.7 
MINIMUM COP FOR HEAT OPERATED 
AIR CONDITIONING SYSTEM EQUIPMENT 



HEAT SOURCE 


MINIMUM COP 


Direct fired (eas/oil) 


0.48 


Indirect fired (steam/hot 
water) 


0.68 



780 CMR 1312.0 ELECTRICAL POWER 
DISTRIBUTION 

1312.1 Scope: Electrical distribution systems shall 
be designed for the efficient distribution of electrical 
energy from the service entrance to the points of use. 

1312.1.1 Exempt buildings: Buildings in use 
groups R-3 and R-4 (one-and two-family 
dwellings) shall be exempt from the requirements 
of 780 CMR 1312.0 

1312.2 Power factor: Utilization equipment greater 
than 1 ,000 watts and lighting equipment greater than 
15 watts with an inductive reactance load component 
shall have a power factor of not less than 85% under 
rated load conditions. Power factor of less than 85% 
shall be corrected to at least 90% under rated load 
conditions. Power factor corrective devices, installed 
to comply with this code, shall be switched with the 
utilization equipment, except where this results in an 
unsafe condition or interferes with the intended 
operation of the equipment. 

1312.3 Service voltage: Where a choice of service 
voltage is available, a computation shall be made to 
determine which service voltage would produce the 
least energy loss, and that voltage shall be selected. 

1312.4 Electric energy determination: In all multi- 
family dwellings, each dwelling unit shall be 
separately metered. Also see 527 CMR 12.00. 

Exceptions: 

1 . Publicly financed housing for the elderly 
with fuel fired heating systems, with centrally 
operated air conditioning systems, or without 
air conditioning systems are exempt from this 
requirement. 

2. Publicly financed housing for the elderly 
with electric resistance or storage heating 



systems are exempt from 780 CMR 1312.4 
provided there is informational metering of the 
individual dwelling units. 

780 CMR 1313.0 LIGHTING SYSTEMS 
1313.1 Scope: 780 CMR 1313.0 establishes the 
maximum power limits and control requirements for 
interior and exterior illumination systems. 

Note: All electrical wiring shall comply with 
applicable requirements of 527 CMR 12.00 as 
listed in Appendix A. 

1313.1.1 The rooms, spaces and areas covered 
by 780 CMR 1313.0 include: 

1. Interior spaces of buildings. 

2. Building exterior areas such as: entrances, 
exits, loading docks, etc. 

3. Roads, grounds and other exterior areas 
including open-air covered areas where 
lighting is required and is energized through 
the building electrical service. 

1313.1.2 Exempt buildings and spaces: The 

following buildings and spaces are exempt from 
the provisions of 780 CMR 1313.0: 

1. Lighting for dwellings units contained in 
use groups R-2, R-3 and R-4, except for the 
switching requirements in 1313.2.2.1. 

2. Outdoor activities such as manufacturing, 
storage, commercial green houses and 
processing facilities. 

3. Lighting power for theatrical productions, 
television broadcasting, audio-visual 
presentations and those portions of 
entertainment facilities where lighting is an 
essential technical element for the function 
performed. 

4. Specialized luminaires for medical and 
dental purposes. 

5. Outdoor athletic facilities. 

6. Display lighting required for art exhibits or 
displays in galleries, museums and monuments. 

7. Exterior lighting for public monuments and 
recognized landmarks such as buildings 
individually listed on the National Register of 
Historic Places. 

8. Special lighting needs for research. 

9. Lighting to be used solely for indoor plant 
growth during the hours of 10:00 P.M. to 6:00 
A.M. 

10. Emergency lighting that is automatically 
"off during normal operation. 

1 1 . High risk security areas identified by local 
ordinances or regulations or by security or 
safety personnel as requiring additional 
lighting. 

12. Classrooms specifically designed for the 
hard of seeing, hard of hearing (lip-reading), 
and for senior citizens. 

13. Lighting for signs. 



780 CMR - Sixth Edition 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



14. Store-front display windows in retail 
facilities. 

15. Spaces regularly used for religious 
services or worship. 

1313.2 Minimum requirements: This 780 CMR 
1 3 1 3.2 establishes the minimum requirements which 
must be met for all spaces covered by 780 CMR 
1313.0. 

1313.2.1 Building Lighting Power Limit 
(BLPL): A Building Lighting Power Limit 
(BLPL) is the upper limit of the power to be 
available to provide the lighting needs of a 
building. 

The Building Lighting Power Limit (BLPL) is 
the sum of the building Exterior Lighting Power 
Allowance (ELPA), the Roads and Grounds 
Lighting Power Allowance (RLPA), and the 
building Interior Lighting Power Limit (ILPL). 

1. The building Exterior Lighting Power 
Allowance (ELPA) is calculated in 780 CMR 
1313.2.1.4. 

2. The Roads and Grounds Lighting Power 
Allowance (RLPA) is calculated in 780 CMR 
1313.2.1.5. 

3 . The building Interior Lighting Power Limit 
(ILPL) may be calculated either by the 
prescriptive criteria in 780 CMR 13 13.4 or by 
the system performance criteria in 780 CMR 
1313.5. 

The prescriptive criteria (780 CMR 1313.4) 
provide a simple calculation procedure with 
limited flexibility. The system performance 
criteria (780 CMR 1313.5) provide a more 
complex and lengthy calculation procedure with 
greater flexibility usually suitable for complex 
lighting systems in larger buildings. 

When using the system performance criteria 
(780 CMR 1313.5) computer-based procedures 
are required to be utilized. 

1313.2.1.1 Compliance: A building design 

shall be considered in compliance with 

780 CMR 1313.0 if: 

1. The exterior lighting power to be 
installed is no greater than the Exterior 
Lighting Power Allowance (ELPA). 

2. The roads and ground lighting power to 
be installed is not greater than the Roads 
and Grounds Lighting Power Allowance 
(RLPA). 

3. The interior lighting power to be 
installed is not greater than the Interior 
Lighting Power Limit (ILPL). Tradeoffs 
between ILPL and ELPA or RLPA shall 



not be allowed (also see 780 CMR 
1313.2.1.2). 

1313.2.1.2 Compliance for multiple 
buildings of a facility: The lighting power 
limits for each building in a facility shall be 
calculated separately. Tradeoffs among 
buildings shall be restricted as described 
below: 

1. Tradeoffs of Interior Lighting Power 
Limits among other buildings of the same 
facility shall not be allowed. 

2. Tradeoffs between Interior Lighting 
Power Limits and Exterior Lighting Power 
Allowances or Roads and Grounds Power 
Allowances shall not be allowed. 

3. Tradeoffs of Exterior Lighting Power 
Allowances among buildings of the same 
facility are allowed. 

1313.2.1.3 Forms for compliance: Forms 
approved by the Board of Building Regulations 
and Standards, when such Forms exist, shall be 
completed to show compliance with 780 CMR 
1313.0, as follows: 

1. To summarize the total Exterior 
Lighting Power Allowance (ELPA). 

2. To summarize the maximum Road and 
Grounds Lighting Power Allowance 
(RLPA). 

3. To summarize the maximum Building 
or Facility Lighting Power Limit (BLPL, 
FLPL). The BLPL or FLPL shall be the 
sum of the ILPL and the ELPA of the 
building (or of all buildings) and the RLPA 
of the road and grounds. 

4. If the prescriptive criteria of 780 CMR 
1313.4 are used to determine the Interior 
Lighting Power Limit (ILPL), then an 
approved form shall be used to summarize 
the maximum Interior Lighting Power 
Limit. 

5. If the system performance criteria of 
780 CMR 1313.5 are used to determined 
the interior lighting power limit (ILPL), 
then calculations by a Massachusetts 
Registered Engineer or other legally 
recognized professional (see M.G.L. 
c. 1 12, § 81R) (or an equivalent computer 
generated printout) shall be used to 
summarize the Interior Lighting Power 
Limit. 

1313.2.1.4 Exterior Lighting Power 
Allowance (ELPA): Lighting power for 
building exteriors shall not exceed the values 
given in Table 1313.2.1.4 in accordance with 
the activities to be performed. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 1313.2.1.4 

MAXIMUM LIGHTING POWER 

ALLOWANCES (CONNECTED LOAD) FOR 

BUILDING EXTERIORS 



LOCATION 


ALLOWANCE ' 


Exit (with or without a 
canopy) 


20 W/Iin. ft. of door opening 


Entrance (without a canopv) 


30 W/lin. ft. of door opening 


Entrance (with a canopy) 

High traffic (retail, hotel, 
airport, theater, etc.) 


10 W/ft of canopied area 


Light traffic (hospital, office, 
school, etc.) 


4 W/ft of canopied area 


Loading area 


0.030 W/ft" 


Loading, door 


20 W/lin. ft. of door opening 



NOTE: Total illumination allowance for the building is 
1 W/Lin. Ft. exterior (including the above allowances) 
of building perimeter. 

1313.2.1.5 Roads and Grounds Power 
Allowance (RLPA): Lighting power for roads 
and grounds shall not exceed the values in 
Table 1313.2.1.5. 

Table 1313.2.1.5 

MAXIMUM LIGHTING POWER 

ALLOWANCES (CONNECTED LOAD) FOR 

ROADS AND GROUNDS 



LOCATION 


ALLOWANCE 


Storage and work areas 


0.20 W/ft" 


Other activity areas for casual 
use such as picnic grounds, 
gardens, parks, and other 
landscaped areas 


0.10 W/ft 2 


Private driveways/walkwavs 


0.10 W/ft 2 


Public drivewavs/walkwavs 


0.15 W/ft 2 


Private parking lots 


0.12 W/ft 2 


Public parking lots 


0.1 8 W/ft 2 



1313.22 Interior and exterior lighting controls: 

All lighting systems except those required for 
emergency or exit lightings shall be provided with 
manual, automatic or programmable controls. 

1313.2.2.1 Minimum number of lighting 
controls: 

1. Each area enclosed by ceiling height 
partitions shall have independent control of 
the lighting within that area. 

2. The maximum area to be controlled by 
a single switch shall be 750 square feet. 
The total number of switches shall be not 
less than one switch for each 1600 watts 
(@ 277 volts) of connected load, or one 
switch for each 1250 watts (@ 120 volts) 
of connected load. 

Exception: Lighting control requirements 
for spaces which must be used as a whole 
and operate during well defined periods of 
the 24 hour day shall be exempt from 
780 CMR 1313.2.2.1.2. If all the lighting 



is automatically controlled such that during 
non-business hours (from 14 hour after 
closing to Vi hour before opening) % of the 
connected load is shut off, or the operating 
connected load does not exceed 0.7 watts 
per square foot. (Examples of such spaces 
may include retail and department stores, 
warehouses, service corridors, public 
lobbies of office buildings and other such 
spaces.) 

Lighting requirements for other spaces 
which must be used as a whole but are not 
operated during well defined periods of the 
day and therefore may be utilized during 
any period of the 24 hour day, may be 
controlled by a lesser number of controls, 
but not less than one control point for each 
1500 watts of connected lighting power or 
total of three control points, whichever is 
greater. Lighting in such spaces shall be 
controlled in accordance with the work 
activities. (Examples of such spaces may 
include the public lobbies of hotels and 
hospitals and other such spaces, all under 
central supervision.) 

3. Hotel and motel guest rooms excluding 
bathrooms shall have one or more master 
switches at the door that turn off all 
permanently wired lighting fixtures and 
switched receptacles. For multiple room 
hotel suites, switches at the entry of each 
room, in lieu of the switch at the main 
door, will be acceptable to meet these 
requirements. 

4. Bathrooms in hotels and motels shall 
have a switchable, permanently installed 
night light with a maximum wattage of five 
watts. 

5. Switches controlling the same load 
from more than one location shall not be 
credited as increasing the number of 
controls to meet the requirements of 
780CMR1313..2.2. 

6. All task lighting shall be separately 
controlled. There shall be at least one 
switch per task area. Switches for task 
lighting may be incorporated as part of the 
lighting fixture. 

Exceptions: 

1 . Lighting controls forspaces which 
must be used as a whole, such as public 
lobbies of office buildings, hotels, and 
hospitals; and warehouses, storerooms 
and service corridors under centralized 
supervision may be centralized in 
remote locations. 

2. Manual and automatic control 
devices may reduce the number of 
controls required as listed in Table 
1313.2.2. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



Table 1313.2.2 

REDUCTION ALLOWANCE FOR 

SELECTED CONTROLS 



TYPE OF CONTROL 



EQUIVALENT NUMBER 
OF CONTROL POINTS 



Occupancy sensors 



Timer - Programmable from the 
space being controlled 



Three level, including off, step 
control or pre-set dimming 



Four level, including off, step 
control or pre-set dimming 



Automatic or continuous 
dimming 



1313.2.2.2 Accessibility of switches: All 

switching devices used to control lighting 



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224.1 



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THE MASSACHUSETTS STATE BUILDING CODE 

NON-TEXT PAGE 



224.2 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



within an area shall be readily accessible to 

personnel occupying that area. 
Exceptions: 

1. Lighting controls for spaces which 
must be used a whole, such as public 
lobbies of office buildings, hotels, and 
hospitals; retail and department stores 
and warehouses, storerooms and service 
corridors under centralized supervision 
may be centralized in remote locations. 

2. Automatic controls 

3. Programmable controls 

4. Controls requiring trained operators. 

5. Controls for safety hazards and 
security. 

1313.2.2.3 Exterior lighting controls: In all 
exterior areas, lighting fixtures shall be 
automatically switched for non-operation when 
natural light is available except where security 
considerations would dictate otherwise. 

1313.2.3 Ballasts: 

1313.23.1 Fluorescent lamp ballasts: 

Fluorescent lamp ballasts which have all the 
following characteristics shall meet or exceed 
the minimum ballast efficiency factor as shown 
in Table 1313.2.3. 

1. Operate at nominal input voltages of 
120 or 277 volts; 

2. Have a power factor equal to or greater 
than 0.60 for a single F40T12 lamp; 

3. Used to operate either F40T12 or 
F96T12 lamps as specified in Table 
1313.2.3; 

4. Designed for use at temperatures above 
0°F; 

5. Not specifically designed for use with 
dimming controls. 

Table 1313.2.3 
MINIMUM BALLAST EFFICIENCY 
FACTOR 



BALLAST TYPE 


BALLAST EFFICIENCY 
FACTOR 


One - 4 foot lamp 


1.805 


Two - 4 foot lamps 20 V") 


1.06 


Two - 4 foot lamps (277 V) 


1.05 


Two - 8 foot slimline lamps 


0.57 


Two - 8 foot high output rapid 
start lamps 


0.39 



Note: The Ballast efficiency factor shall be calculated 
in accordance with Equation 13 13.2.3. 1 : 

Equation 1313.2.3.1 



BEF = 



BF 



Power Input 

where: 

BEF = Ballast efficiency factor 



BF = Ballast factor, expressed as a percent (also 

known as Relative Light Output) 
Fewer Input = Total wattage of combined lamps 
and ballasts 

Tests for ballast factor and power input 
shall be in accordance with ANSI Standard 
C82.2 1984 Method of Measurement for 
Fluorescent Lamps Ballasts using Standard 
Lamps. 

1313.2.3.2 One-lamp or three-lamp fluorescent 
luminaires recess-mounted within ten feet 
center-to-center of each other or pendant- 
mounted or surface-mounted within one foot of 
each other, and within the same room, shall be 
tandem wired to eliminate unnecessary use of 
single-lamp ballast. 

1313.2.3.3 Ballasts shall have a power factor 
greater than 90%. 

Exception: 

1. Ballasts for circline and compact 
fluorescent lamps and low wattage high 
intensity discharge lamps of less than 100 
watts. 

2. Dimming ballasts. 

1313.3 Interior lighting power adjustment 
factors: 

1313.3.1 Adjusted Lighting Power (ALP): 

When determining interior lighting compliance in 
780 CMR 1313.4 or 1313.5, the Connected 
Lighting Power (CLP) for lights controlled by 
normal switching must not exceed the Interior 
Lighting Power Limit (ILPL). However, when the 
switching controls are automatic (i.e. daylight 
sensors, occupancy sensors, or lumen 
maintenance controls) the connected lighting 
power may exceed the ILPL provided that the 
Adjusted Lighting Power (ALP), calculated using 
equation 1313.3.1 does not exceed the ILPL. 

Equation 1313.3.1 

ALP = CLPXPAF men: 

ALP = Adjusted Lighting Power, watts 

CLP= Connected Lighting Power for the 

luminaires controlled by the automatic 

control device, watts 
PAF= Power Adjustment Factor 

13133.2 Power Adjustment Factor (PAF): The 

Power Adjustment Factor is limited to the specific 
area controlled by the automatic control device. 
The Power Adjustment Factor shall be as shown 
in Table 13 13.3.2. 

131333 Daylighting credits: Where daylighting 
credit is utilized, based on the procedures in 
780 CMR 1313.2.2.1 or 1313.3.2, automatic 
controls such as photoelectric switches or 
automatic dimmers shall be provided in the 
daylighted spaces. 



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225 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

category by the gross floor area included in 
that space use category. 

3 . Add the total number of watts for each area 
to arrive at the Interior Lighting Power Limit 
(ILPL) for the building. 

4. In all cases of alterations or additions to 
existing buildings, the Unit Lighting Power 
Allowance (ULPA) for the new or altered area 
shall be calculated using Building Size Ranges 
in Table 1 3 1 3 .4. 1 determined by combining the 
square footage of each category represented in 
such alterations or additions with the total 
square footage of the respective categories of 
the building. 

1313.4.2 Compliance: A building shall be 
considered in compliance with 780 CMR 1313.4 
if the interior Adjusted Lighting Power (ALP) to 
be installed, as determined in 1313.3.1, does not 
exceed the Interior Lighting Power Limit (ILPL) 
for the building, as determined in 1 3 1 3 .4. 1 . 

Table 1313.4.1 
UNIT LIGHTING POWER ALLOWANCE 

■ (ULPA), W/ft 2 



Table 1313.3.2 
POWER ADJUSTMENT FACTOR (PAF) 


AUTOMATIC CONTROL DEVICE 


PAF 


1 . Occupancy sensors 


0.70 


2. Day lighting sensors 

a) Continuous dimming 

b) Multiple step control 
clOn-off control 


0.70 
0.80 

0.90 


3. Lumen maintenance control 


0.90 


4. Combination of 1 . and 2. 


0.60 


5. Combination of 1. and 3. 


0.65 


6. Combination of 1 ., 2 and 3. 


0.55 


7. Programmable timing control 


0.85 



Notes: 

1. PAF credits shall not be applied to the dimming 
controls of incandescent lamps or luminaires. 

2. Only one adjustment factor may be used for each 
building space or luminaire, and 50% or more of the 
luminaire shall be within the applicable space to qualify 
for the power adjustment factor. Controls shall be in- 
stalled in series with the lights and in series with all 
manual switching devices in order to qualify for an 
adjustment factor. 

3. Daylighting controls shall be able to reduce electrical 
power consumption for lighting, continuously or in two 
or more steps, to 50% or less of maximum power 
consumption; shall control all luminaires more than 50% 
within a daylighted space, and shall not control any 
luminaire more than 50% outside a daylighted space. 

4. Programmable timing controls used for credit in 
conjunction with Table 1313.3.2 shall be capable of: 

a. programming different schedules for week days 
and weekends. 

b. temporary override by occupants with automatic 
return to the original schedules. Override controls 
shall be readily accessible. 

c. providing independent control of each lighting load 
which is required to be separately controlled. 

1313.4 Prescriptive criteria: These prescriptive 
lighting requirements shall be used with 780 CMR 
1313.2 and 1313.3. 780 CMR 1313.5 may be used 
instead of 780 CMR 1313.4. 

1313.4.1 Interior Lighting Power Limit (ILPL) 
calculation: Installed adjusted lighting power, 
including supplemental or task lighting provided 
by fixtures permanently wired in place but not by 
movable fixtures shall comply with the power 
limits established in this section. To establish a 
lighting power allowance, the following 
procedure shall be used: 

1. Determine the space use categories and 
Unit Lighting Power Allowances (ULPA) for 
the various parts of the building from Table 
1313.4.1. If a space use intended for the 
building is not listed in Table 1313.4.1, then 
the closest related building or space type listed 
in the Table shall be used. 

2. Multiply the Unit Lighting Power 
Allowance (ULPA) for each space use 



BUILDING SIZE RANGE, Ft* 



BUILDING 
SPACEATYPE 


Less 
than 
6.000 


6,001 

to 
15,000 


15,001 

to 
30,000 


30,001 

to 
50.000 


50,001 
or 

more 


Food Service 
Fast Food/Cafeteria 
Leisure Dining/Bar 


1.5 
2.2 


1.4 
1.9 


1.3 

1.7 


1.3 
1.5 


1.3 
1.4 


Offices 


1.9 


1.8 


1.7 


1.6 


1.5 


Retail . 
Type B & C 
Type D & E 
Mall Concourse at 
multi-store shop- 
ping centers 


3.3 
3.0 

1.4 


2.8 
2.5 

1.4 


2.5 
2.2 

1.3 


2.3 
2.0 

1.3 


2.1 
1.8 

1.2 


Garages & Basements 


0.3 


0.3 


0.2 


0.2 


0.2 


Schools 
Pre-High School 
High School/ 
Technical 
University 


1.8 

2.0 


1.8 
2.0 


1.7 
2.0 


1.6 

1.9 


1.5 
1.8 


Warehouse/Storage 


0.8 


0.6 


0.5 


0.5 


0.4 


Factory & Workshop 


1.2 


1.1 


1.0 


1.0 


1.0 



Notes: 

1 Includes general merchandising and display lighting. 

2 Type B & C Retail: Fine Merchandising and Mass 
Merchandising. 

3 Type D & E Retail: General Merchandising and Food 
and Miscellaneous Merchandising. 

4 General lighting. 

1313.5 System performance criteria: These system 
performance lighting requirements shall be used 
with the minimum requirements specified in 
780 CMR 1313.2 and 1313.3. The prescriptive 
criteria listed in 780 CMR 1313.4 may be used 
instead of 780 CMR 1313.5 (Note that if 780 CMR 
1313.5, "System Performance Criteria", is employed, 
a supplemental computer program, available through 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 



the State House Bookstore must be utilized/the 
detailed materials in 780 CMR 1315.5.1 thru 
1315.5.3 and Table 1315.5.1 are provided here for 
information only - see notes 1, 2 and 3. 

NOTE(l): 

A COMPUTER SOFTWARE PROGRAM, LGTSTD 
(LIGHTING STANDARD) IS AVAILABLE TO 
PERFORM 780 CMR 1333.5 EVALUATION. THIS 
PROGRAM PERFORMS PASS/FAIL ANALYSIS. 
THE LGTSTD SOFTWARE PROGRAM, ALONG 
WITH THE ENVSTD SOFTWARE PROGRAM (SEE 
780 CMR 1314.5) ARE COMBINED ON A SINGLE 
5%" FLOPPY DISC AND THIS DISC, PLUS A 
USER'S MANUAL FOR BOTH PROGRAMS, ARE 
AVAILABLE THROUGH THE STATE 
BOOKSTORE (617) 727-2834. 

NOTE (2): 

USE OF THE LIGHTING COMPLIANCE 
CALCULATION COMPUTER PROGRAM 
(LTGSTD21) OF THE CODIFIED VERSION OF 
ASHRAE/IES 90.1-1989 "ENERGY CODE FOR 
COMMERCIAL AND HIGH-RISE RESIDENTIAL 
BUILDINGS" SHALL BE AN ACCEPTABLE 
OPTION FOR DEMONSTARTING COMPLIANCE 
WITH THE LIGHTING REQUIREMENTS OF 
780 CMR . 

NOTE (3): 

780 CMR 1313.5.1 THROUGH 1313.2.3, TABLE 
780 CMR 1313.5.2 AND FIGURES 1313.5.1 AND 
1313.5.2 ARE INFORMATIONAL - THE 
SUPPLEMENTAL COMPUTER SOFTWARE 
LGTSTD1 AND LGTSTD2I ARE "PASS/FAIL" 
EVALUATIONS. 

1313.5.1 Unit power density procedure: 

Installed Adjusted Lighting Power (ALP), 
including supplemental or task related lighting 
provided by movable fixtures shall comply with 
the power allowances established in 780 CMR 
1313.5. 

1313.5.1.1 The Lighting Power Budget (LPB) 
of each interior space shall be determined in 
accordance with equation 1313.5.1. 

Equation 1313.5.1 

LPB =A XPbXAF where: 

LPB = Lighting power budget of the space, watts 

A = Area of the space, ft 

Pb = BaseUPD,w/ft 2 (Tablel313.5.1) 

AF = Area factor of the space (Figure 13 13.5.1) 

1. The Room Area (A) shall be calculated from 
the inside dimensions of the room. 



2. The Base UPD (Pb) shall be selected from 
Table 1313.5.1. For applications to areas or 
activities other than those given, select values for 
similar areas or activities. 

3. The Area Factor (AF) shall be determined 
from Figure 1313.5.1 based on the room area and 
ceiling height. Rooms of identical ceiling height 
and activities may be listed as a group. The AF of 
a group of rooms shall be determined from the 
average area of these rooms. 

1313.5.1.2 Special Spaces and Activities 

1. Multi-Function Rooms. For rooms 
serving multi-functions, such as hotel 
banquet/meeting rooms and office 
conference/presentation rooms, a sup- 
plementary lighting system with 
independent controls may be installed. The 
installed power for the supplementary 
system shall not be greater than 50% of the 
base LPB calculated in accordance with 
780 CMR 1313.5.1.1. 

2. Simultaneous Activities. In rooms 
containing multiple simultaneous activities 
such as a large general office having 
separate accounting and drafting areas 
within the same room, the LPB for the 
rooms shall be the weighted average of the 
activities in proportion to the areas being 
served. 

1313.5.2 The Interior Lighting Power Limit 
(TLPL) shall include a 0.20W/ft' allowance for 
unlisted space areas. The ILPL shall be calculated 
in accordance with equation 1313.5.2. 

Equation 1313.5.2: 

ILPL=LPB(Listed Spaces) +020W/ft 2 X(Uniisted Space) 

where: 
ILPL = Interior Lighting Power Limit 
Unlisted space - (LBA - Area of listed spaces), 
ft 2 

LBA = Lighting Building Area, ft 
LPB = Lighting Power Budget 

1313.5.3 Compliance: A building shall be 
considered in compliance with this section if the 
interior Adjusted Lighting Power (ALP) to be 
installed in the building, as determined in 
780 CMR 1313.3.1, does not exceed the Interior 
Lighting Power Limit (ILPL) for the building, as 
determined in 780 CMR 1313.5.2. 



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227 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 1313.5.1 
BASE UNIT POWER DENSITY (UPD FOR AREA/ACTIVITY- W/FT 2 ) 



AREA/ACTIVITY 


UPD 


NOTE 


COMMON ACTIVITY AREAS 




Auditorium 


1.6 


(a) 


Corridor 


0.9 


(b) 


Classroom/Lecture hall 


2.0 




Elec/Mech equipment room 






General 


0.7 


(b) 


Control rooms 


1.5 


(b) 


Food Service 






Fast food/Cafeteria 


1.3 




Leisure dining 


2.5 




Bar/Lounge 


2.5 


(c) 


Kitchen 


1.4 


(0 


Recreation/lounge 


0.7 




Stair 






Active traffic 


0.6 




Emergency exit 


0.4 




Toilet & Washroom 


0.8 




Garage 






Auto & Pedestrian 






Circulation 


0.3 




Parkins area 


0.2 




Laboratory 


2.3 




OFFICE CATEGORY 1 




(d) 


Enclosed offices, all open plan offices without partitions or 


with partitions lower 




than 4.5 ft below the ceiling 






Reading, typing and filing 


1.6 


(e) 


Drafting 


2.5 


(e) 


Accounting 


2.0 


(e) 


OFFICE CATEGORY 2 




(d) 


Open plan offices 900 square feet or larger with partitions '. 


.5 to 4.5 feet below 1he 




ceiling. (Offices less than 900 square feet shall use Categor 


^•1) 




Reading, typing and filing 


1.9 


(b) 


Drafting 


2.9 


(b) 


Accounting 


2.4 


(b) 


OFFICE CATEGORY 3 




(d) 


Open plan offices 900 square.feet or larger with partitions J 


ligher than .3.5 feet 




below the ceiling. (Offices Jess than 900 square feet shall us 


e Category!) 




Reading, typing and filing 


2.1 


(b) 


Drafting 


3.4 


(b) 


Accounting 


2.7 


(b) 



COMMON ACTIVITY AREAS 



Library 

Audiovisual 


1.1 




Stack area 


1.5 




Card file and cataloging 
Readine area 


1.6 
1.9 




Lobby (General) 

Reception and waiting 
Elevator lobbies 


1.0 
0.8 




Atrium (multi-story) 
First 3 floors 


0.7 




Each additional floor 


0.2 




Locker room and shower 


0.8 





228 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY CONSERVATION 

Notes: 

(a) A 1 .5 adjustment factor is applicable for multi-functional spaces. 

(b) Area Factor of 1 .0 shall be used for these spaces. 

(c) Base UPD includes lighting power required for clean-up purpose. 

(d) Not less than 90% of all work stations shall be individually enclosed with partitions of at least the height 
described. 

(e) Area Factor shall not exceed 1 .55. 

(f) See Chapter 2 for definitions of Retail Facilities. 

(g) Area Factor of 1 .0 shall be used for all indoor athletic spaces. 



Figure 1313.5.1 
AREA FACTOR ADJUSTMENTS 



£ 1.3 



U \ ! \ 1 \ 1 i Vi i ■ 1 "Vj. 


\i\ \i M \i i X i i r\ 


\\\ \ \ K . 1 I \ft l 1 


\\\ \ \ i \i i r\i 1 


\\ \ \ i \! X*.' I pO 


\ \\ \i W- i S^ I -\- 


k V V N.l\' 


^■v^-i-Cei 1 ing Height 


l\ \i\ i ^1 i^ 


r*"^«j i 




\l \ X. i ^^ i i^-^ i J 


N. j\ ^"n^ 1 7^"— — i^ ^ — ■ — -1 


! 1 1 \!^ """"^ ~"*>--^J 1 P"""— — -!— 


| | | ^^-^_ "-7-— ^__ — -^___|_ i 


III ~~i — ■ — L~ i ■ ' 


I i i i i i ■ — H 


1 i i i i i i i i 1 



100 200 300 400 500 600 700 800 900 100C 



Figure 1313.5.2 
AREA OF SPACE (ft 2 ) 



1.7 

1.6 

1.5 



O I.* 



1.3 
1.2 

1.1 
1.0 




1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 



Area Factor Formula: 

Area Factor = 0.2 = 0.8 (1/0.9") 

10.21(07/ - 2.5) . 
where " - - 1 



A = Area factor, 

CH = Ceiling height (ft). 

A r = room area (ft ). 

If AF<1.0use 1.0;ifAF>1.8use 1.8. 



9/19/97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



231 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



780 CMR 1314.0 BUILDING ENVELOPE 

REQUIREMENTS FOR COMMERCIAL 

AND HIGH RISE RESIDENTIAL 

BUILDINGS 

1314.1 Scope: 780 CMR 1314.0 applies to 
commercial buildings and to high rise residential 
buildings over three stories. 

1314.2 Compliance: The envelope design of a 
building being evaluated is in compliance with the 
requirements of 780 CMR 1314.0 provided that: 

1 . The minimum requirements and calculation 
procedures of 780 CMR 1314.3 are met; and, 

2. Compliance with either the prescriptive 
criteria (780 CMR 1314.4) or the system 
performance criteria (780 CMR 1314.5) is met. 

1314.2.1 The prescriptive criteria (780 CMR 
1314.4) provide a simple calculation procedure 
with limited flexibility. The system performance 
criteria (780 CMR 1314.5) provide a more 
complex and lengthy calculation procedure with 
greater flexibility usually suitable for complex 
envelope assemblies in larger buildings. 

When using the system performance criteria 
(780 CMR 1314.5) a computer-based procedure, 
approved by the State Board of Building 
Regulations and Standards, must be used to 
calculate the exterior envelope compliance values. 
(See 780 CMR 1314.5.) 

1314.3 Minimum Requirements 

13143.1 Overall thermal transmittance (Uo): 

The overall thermal transmittance of building 
envelope assemblies shall be calculated in 
accordance with Equation 1314.3.1 : 



Uo = (UiAi 



UnAri)IAo 



where: 

Uo = the average thermal transmittance of the 
gross area of an envelope assembly, e.g., 
the exterior wall assembly, including 
fenestration and doors; roof and/or 
ceiling assembly; or floor assembly, 
(Btu/h-ft 2 -°F). 

Ao = the gross area of the envelope assembly, 
(ft 2 ). 

Ui = the thermal transmittance of each 
individual element of the envelope 
assembly, e.g., the opaque portion of the 
wall or the fenestration - see 780 CMR 
1314.3.2, (Btu/h-ft 2 -°F). 

Ut = 1/Rt, the total resistance of the envelope 
assembly, (Btu/h-ft 2 -°F). 

Ai = the area of each individual element of the 
envelope assembly, (ft 2 ). 

1314.3.2 Thermal transmittance (Ui) of an 
individual element of an envelope assembly: 

The thermal transmittance of each envelope 
assembly shall be determined accounting for all 



series and parallel heat flow paths through the 
elements of the assembly. Compression of 
insulation shall be accounted for in determining 
the thermal resistance. 

1314.3.2.1 The thermal transmittance of 
opaque elements of assemblies shall be 
determined using a series path procedure with 
correction for the presence of parallel paths 
within an element of the envelope assembly 
(such as parallel paths through wall cavities 
with insulation and studs). The procedure to be 
used in meeting the requirements of 780 CMR 
1314.3.2.1 is given in Appendix E. 
13143.2.2 The thermal transmittance of 
fenestration assemblies shall be corrected to 
account for the presence of sash, frames, edge 
effects and spacers in multiple glazed units. If 
thermal transmittances of sash and frames are 
known, then Equation 1314.3.1 shall be used 
for calculation, otherwise Equation 1314.3.2 
shall be used: 

Equation 1314.3.2 

UoMUg, \-Ff,\-Al = Ug,2-Ff,2-A2=... + Ug,n-Ff,n-An) 

Where: 

Uof = the overall thermal transmittance of the 

fenestration assemblies, including sash 

and frames, (Btu/h-ft 2 -°F). 
Ug = the thermal transmittance of the central 

area of the fenestration excluding edge 

effects, spacers in multiple-glazed units, 

and the sash and frame, (Btu/h-ft -°F). 
Ff = framing adjustment factor for sash, 

frames, etc. 
Aof = the area all fenestration including glazed 

portions, sash, frames, etc., (ft ). 
Values for Ug shall be the larger of the winter or 
summer values obtained the ASHRAE Handbook, 
1993 Fundamentals Volume. Values for Ff shall be 
obtained from the ASHRAE Handbook, 1993 
Fundamentals Volume. Values for Ug and Ffmay 
also be obtained from manufacturer's test data for 
specific product assemblies. Where a range of 
framing adjustment factors is provided, the average 
of the range shall be used. 

1314.3.3 Shading coefficients: The Shading 
Coefficient (SC) for fenestration shall be obtained 
from the ASHRAE Handbook, 1993 
Fundamentals Volume or from manufacturers' test 
data. For the prescriptive or systems performance 
envelope compliance calculations in 780 CMR 
1314.4 and 1314.5 a factor, SCx, is used. SCx is 
the Shading Coefficient of the fenestration, 
including internal and external shading devices, 
but excluding the effect of external shading 
projections which is calculated separately. The 
shading coefficient used for louvered shade 
screens shall be determined using a profile angle 



232 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

EXTERIOR WALL COVERINGS 



sheathing is of wood not less than one-inch 
nominal thickness or of wood structural panels 
not less than 5/16 inch thick. Where wood 
shingles or shakes are applied over fiberboard 
shingle backer and fiberboard sheathing, such 
shingles or shakes shall be attached with approved 
corrosion-resistant annular-grooved nails and the 
installation shall be done in accordance with the 
approved manufacturer's installation instructions. 
Where wood shingles or shakes and asbestos 
shingles or siding are nailed directly to nail base 
fiberboard sheathing, the sheathing shall not be 
less than '/4-inch nominal thickness, the shingles, 
shakes and siding shall be attached with approved 
corrosion-resistant annular-grooved nails, and the 
installation shall be done in accordance with the 
approved manufacturer's installation instructions. 

1405.3.8 Metal siding: Exposed metal siding or 
sheathing shall be protected from corrosion at the 
ground level by supporting the foundation channel 
at sufficient height above grade on the concrete 
apron or other approved water-resistant 
foundation. 

14053.9 Exterior wall pockets: In exterior walls 
of all buildings or structures, wall pockets or 
crevices in which moisture can accumulate shall 
be avoided or protected with adequate caps or 
drips, or other approved means shall be provided 
to prevent water damage. 

1405.3.10 Flashings: Approved corrosion- 
resistant flashings shall be provided at the top and 
sides of all exterior window and door openings in 
such a manner as to be leakproof Approved 
corrosion-resistant flashings shall be installed: at 
the intersection of chimneys or other masonry 
construction with frame or stucco walls, with 
projecting lips on both sides under stucco 
copings; under and at the ends of masonry, wood 
or metal copings and sills; continuously above all 
projecting wood trim; at the intersection of 
exterior walls and porches and decks; at wall and 
roof intersections; and at built-in gutters. 

Exception: When approved, flashing is not 
required where an approved water-resistant 
sheathing is installed and an approved water- 
resistant caulking is applied at the top and 
sides of all window and door openings in such 
a manner as to be leakproof. 

1405.4 Metal veneers: Veneers of metal shall be 
fabricated from approved corrosion-resistant 
materials or shall be protected front and back with 
porcelain enamel or shall otherwise be treated to 
render the metal resistant to corrosion. Such veneers 
shall not be less than 0.017-inch nominal thickness 
galvanized sheet steel mounted on wood or metal 
furring strips or approved sheathing on the wood 
construction. 



1405.4.1 Construction: Metal veneer for 
buildings of other than Type 5 construction shall 
be: securely attached to masonry; supported on 
approved metal framing protected by painting, 
galvanizing or other approved protection; or 
supported by wood furring strips treated with an 
approved preservative process that complies with 
780 CMR 231 1.3. 

1405.4.2 Waterproofing: All joints and edges 
exposed to the weather shall be caulked with 
approved durable waterproofing material or by 
other approved means to prevent penetration of 
moisture. 

1405.43 Grounding metal veneers: Grounding 
of metal veneers on all buildings shall comply 
with the requirements of 780 CMR 27 and 
527 CMR listed in Appendix A. 

1405.5 Anchored masonry veneer: Anchored 
veneer is veneer secured with approved mechanical 
fasteners to an approved backing. All masonry 
units, mortar and metal accessories used in anchored 
veneer shall meet the physical requirements of 
780 CMR 21. Anchored veneer units shall not be 
less than 1% inches (41 mm) in actual thickness for 
solid masonry units and not less than 2 s /e inches (67 
mm) in actual thickness for hollow masonry units. 

1405.5.1 Height of anchored veneer: Anchored 
veneer shall be supported on footings, foundation 
walls or other approved noncombustible structural 
supports or on wood foundations meeting the 
requirements of 780 CMR 1808.3. The weight of 
all anchored veneer installed on structures more 
than 30 feet (9144 mm) in height above the 
noncombustible foundation or support, with the 
exception of concrete masonry veneers, shall be 
supported by noncombustible construction. The 
construction shall have horizontal supports 
located at each story height above the initial 30 
feet (9144 mm). 

Exception: Height increases are permitted 
where an engineering analysis is prepared by a 
registered design professional and approved. 

1405.5.2 Horizontal supports: Noncombustible 
lintels and noncombustible supports shall be 
provided over all openings. Beams and lintels 
supporting unreinforced masonry veneer shall not 
exceed 1/600 of the span nor 0.3 inches (8 mm). 

1405.53 Wood frame: Masonry veneer anchored 
to wood framing shall be attached with corrosion- 
resistant corrugated sheet metal not less than 
0.029 inch (No. 22 gage) by 7 /s inch wide, or 
corrosion-resistant ties of strand wire not less than 
0.148-inch (No.9 W&M gage) wire with the ends 
of the wire bent to a 90-degree (1 .57 rad) angle to 
form a hook not less than two inches (51 mm) 
long. The metal ties shall be embedded in the 
mortar joint a minimum of one-half the veneer 



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245 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



thickness. Each metal tie shall support not more 
than three square feet (0.28 m 2 ) of wall area with 
a maximum spacing of 16 inches (406 mm) 
vertically and 32 inches (813 mm) horizontally. 
Where anchored veneer is applied over wood 
frame, the studs shall be spaced a maximum of 24 
inches (610 mm) on center and be faced with 
sheathing on both sides. A one-inch (25 mm) 
minimum air space shall be maintained between 
the anchored veneer and the sheathing. Moisture 
protection shall be provided as required by 
780 CMR 1405.3.6. 

1405.5.4 Steel frame: Masonry veneer anchored 
to corrosion-resistant steel framing shall be 
attached with corrosion-resistant ties of strand 
wire not less than 0. 148-inch (No. 9 W&M gage) 
wire with the ends of the wire bent to a 90-degree 
(1.57 rad) angle to form a hook not less than two 
inches (51 mm) long. The wire ties shall be 
embedded in the mortar joint a minimum of one- 
half the veneer thickness. Each metal tie shall 
support not more than 2.67 square feet (0.25 m 2 ) 
of wall area with a maximum spacing of 16 inches 
(406 mm) vertically and 24 inches (610 mm) 
horizontally. Where anchored veneer is applied 
over steel frame, the studs shall be spaced a 
maximum of 24 inches (610 mm) on center and be 
faced with sheathing on both sides. A one-inch 
(25 mm) minimum air space shall be maintained 
between the anchored veneer and the sheathing. 
Moisture protection shall be provided as required 
by 780 CMR 1405.3.6. 

1405.5.5 Masonry or concrete walls: Masonry 
veneer anchored to masonry or concrete walls 
shall be attached with corrosion-resistant ties of 
strand wire not less than 0. 148-inch (No. 9 W&M 
gage) wire with the ends of the wire bent to a 90- 
degree (1.57 rad) angle to form a hook not less 
than two inches (51 mm) long. The metal ties 
shall be embedded in the mortar joint a minimum 
of one-half the veneer thickness. Each metal tie 
shall support not more than three square feet (0.28 
m 2 ) of wall area with a maximum spacing of 1 6 
inches (406 mm) vertically and 32 inches (813 
mm) horizontally. A one-inch (25 mm) 
minimum air space shall be maintained between 
the anchored veneer and the supporting masonry 
or concrete walls. 

1405.5.6 Stone veneer: Stone veneer units not 
exceeding ten inches in thickness are permitted to 
be anchored directly to masonry, concrete or to 
stud construction by one of the following 
methods. 

1 . With concrete or masonry backing, anchor 
ties shall not be less than No. 12 gage 
corrosion-resistant wire formed beyond the 
base of the backing. The legs of the loops shall 
not be less than six inches (153 mm) in length 
bent at right angles and laid in the mortar joint 
and spaced so that the eyes or loops are 12 



inches (305 mm) maximum on center in both 
directions. There shall be provided not less 
than a No. 12 gage corrosion-resistant wire tie 
threaded through the exposed loops for every 
two square feet (0.186 m 2 ) of stone veneer. 
This tie shall be a loop having legs not less 
than 15 inches (381 mm) in length bent so that 
the tie will lie in the stone veneer mortar joint. 
The last two inches (5 1 mm) of each wire leg 
shall have a right-angle bend. One inch (25 
mm) of cement grout shall be placed between 
the backing and the stone veneer. 
2. With stud backing, a two-inch by two-inch 
No. 16 gage corrosion-resistant wire mesh with 
two layers of waterproof paper backing shall 
be applied directly to wood studs spaced a 
maximum of 16 inches (406 mm) on center. 
On studs, the mesh shall be attached with two- 
inch-long (51mm) corrosion-resistant steel 
wire furring nails at four inches (102 mm) on 
center providing a minimum 1 Vfe-inch (28 mm) 
penetration into each stud and with 8d common 
nails at eight inches (200 mm) on center into 
top and bottom plates. The corrosion-resistant 
wire mesh is permitted to be attached to steel 
studs with equivalent wire ties. There shall not 
be less than a No. 12 gage corrosion-resistant 
wire, looped through the mesh for every two 
square feet (0. 186 m 2 ) of stone veneer. This tie 
shall be a loop having legs not less than 15 
inches (38 mm) in length, so bent that the tie 
will lie in the stone veneer mortar joint. The 
last two inches (5 1 mm) of each wire leg shall 
have a right-angle bend. One-inch (25 mm) 
minimum thickness of cement grout shall be 
placed between the backing and the stone 
veneer. 

1405.5.7 Slab-type veneer: Slab-type veneer 
units not exceeding two inches (51 mm) in 
thickness are permitted to be anchored directly to 
masonry, concrete or stud construction. For 
veneer units of marble, travertine, granite or other 
stone units of slab form, ties of corrosion-resistant 
dowels in drilled holes shall be located in the 
middle third of the edge of the units spaced a 
maximum of 24 inches (610 mm) apart around the 
perimeter of each unit with not less than four ties 
per veneer unit. Units shall not exceed 20 square 
feet (1.86 m 2 ) in area. 

If the dowels are not tight fitting, -the holes are 
permitted to be drilled not more than 1/16 inch 
(1.6 mm) larger in diameter than the dowel with 
the hole countersunk to a diameter and depth 
equal to twice the diameter of the dowel in order 
to provide a tight-fitting key of cement mortar at 
the dowel locations when the mortar in the joint 
has set. All veneer ties shall be corrosion- 
resistant metal capable of resisting in tension or 
compression a force equal to two times the weight 
of the attached veneer. 



246 



780 CMR - Sixth Edition 



2/7/97 (Effective 2/28/97) 



CHAPTER 16 



STRUCTURAL LOADS 

(This Chapter is entirely unique to Massachusetts) 



780 CMR 1601.0 GENERAL 
1601.1 Scope: The provisions of 780 CMR 16 shall 
control the structural design of all buildings and 
structures, or portions thereof, hereafter erected. 

780 CMR 1602.0 DEFINITIONS 
1602.1 General: The following words and terms 
shall, for the purposes of 780 CMR 16 and as used 
elsewhere in 780 CMR, have the meanings shown 
herein. 

Load: Forces or other actions that arise on structural 
systems from the weight of all permanent 
construction, occupants and their possessions, 
environmental effects, differential settlement and 
restrained dimensional changes. 
Dead load. The weight of all permanent structural 
and nonstructural components of a building, such 
as walls, floors, roofs, ceilings, stairways and 
fixed service equipment. 

Duration of load: The period of continuous 
application of a given load, or the aggregate of 
periods of intermittent applications of the same 
load. 

Earthquake load: The assumed lateral load acting 
in any horizontal direction on the structural frame 
due to the dynamic action of earthquakes. 
Impact load: The load resulting from moving 
machinery, elevators, craneways, vehicles and 
other similar forces and kinetic loads. 
Internal load: The forces resulting from the 
restraint of movement of construction materials or 
differential movement of a combination of 
materials caused by the effects of expansion or 
contraction due to temperature changes, 
shrinkage, moisture changes, creep, differential 
settlement or combinations thereof. 
Lateral soil load: The lateral pressure in pounds 
per square foot (psf) (kilograms per square meter 
[kg/m 2 ]) due to the weight of the adjacent soil, 
including due allowance for hydrostatic pressure 
and possible surcharge from fixed or moving 
loads. 

Live load: Those loads produced by the 
occupancy of the building, not including 
environmental loads such as wind loads, snow 
loads, earthquake loads or dead loads. 
Wind load: The lateral pressure on the building or 
structure in pounds per square foot (psf) 
(kilograms per square meter [kg/m 2 ]) due to wind 
blowing in any direction. 



Panel (part of a structure): The section of a floor 
or wall comprised between the supporting frame 
of two adjacent rows of columns and girders or 
column bands of floor construction. 

Wall 
Loadbearing wall: A wall supporting any vertical 
load in addition to its own weight. 
Nonloadbearing wall: A wall which does not 
support vertical loads other than its own weight. 

780 CMR 1603.0 CONSTRUCTION 
DOCUMENTS 

1603.1 General: Construction documents shall show 
the size, and relative locations of all structural 
members with foundation, floor and roof levels, 
column centers and all offsets dimensioned. The 
design loads and other information pertinent to the 
structural design required by 780 CMR 1603.2 
through 1603.7 shall be clearly indicated on the 
construction documents for all parts of the building 
or structure. 

1603.2 Floor live load: The uniformly distributed 
floor live load utilized in the design shall be 
indicated for all floor areas (780 CMR1 606.0). Live 
load reduction (780 CMR 1608.0), if utilized, shall 
be indicated. 

1603.3 Roof live load: The roof live load utilized in 
the design shall be indicated for all roof areas 
(780 CMR 1609.0). 

1603.4 Roof snow load: The basic snow load shall 
be indicated. 

1603.5 Wind load: The following information 
related to wind loads shall be indicated, regardless of 
whether wind loads govern the lateral design of the 
building: 

1 . Wind Load Zone. If more than one wind 
direction is exposed, the applicable wind direction 
shall be indicated 

2. Wind pressure, P. 

3. Special exposures 

1603.6 Earthquake design data: Where earthquake 
loads are applicable, the following earthquake 
design data shall be indicated on the construction 
documents: 

1. The Seismic Hazard Exposure Group in 
accordance with 780 CMR 1612.2.5; 

2. The Seismic Performance Category in 
accordance with 780 CMR 1612.2.7; 



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3. The soil-profile type in accordance with Table 
1612.4.1; 

4. The basic structural system and seismic- 
resisting system in accordance with Table 
1612.4.4; 

5. The response modification factor (R) and the 
deflection amplification factor (CJ in accordance 
with Table 1612.4.4; and 

6. The analysis procedure utilized in accordance 
with 780 CMR 1612.5 or 1612.6 as applicable. 

1603.7 Other loads: Concentrated loads (780 CMR 
1613.0), impact loads (780 CMR 1614.0) and 
special loads (780 CMR 1615.0) which are 
applicable to the design of the building or structure 
shall he indicated. 

780 CMR 1604.0 DESIGN SAFE LOAD 

1604.1 Safe support required: Buildings or other 
structures, and all parts thereof, shall be designed 
and constructed to support safely all loads, including 
dead loads, without exceeding the allowable stresses 
(or specified strengths when appropriate load factors 
are applied) for the materials of construction in the 
structural members and connections. 

1604.2 Progressive collapse: Buildings and 
structural systems shall provide such structural 
integrity that the hazards associated with progressive 
collapse are reduced to a level consistent with good 
engineering practice. Structures shall be able to 
sustain local damage or failure, with the structure as 
a whole remaining stable. Compliance with the 
applicable provisions of ASCE 7 listed in 
Appendix A shall be deemed to meet the 
requirements of 780 CMR 1604.0. 

16043 In-situ load tests: The code official is 
authorized to require an engineering analysis or a 
load test, or both, of any construction whenever 
there is reason to question the safety of the 
construction for the intended occupancy. 
Engineering analysis and load tests shall be 
conducted in accordance with 780 CMR 1707.0 or 
1709.0. 

780 CMR 1605.0 DESIGN DEAD LOAD 

1605.1 Weights of materials and construction: In 

estimating dead loads for the purposes of structural 
design, the actual weights of materials and construc- 
tions shall be utilized, but not less than the unit dead 
loads prescribed in Appendix G, or ASCE 7 listed in 
Appendix A. In the absence of definite information, 
any values assumed by the designers shall be subject 
to the approval of the code official. 

1605.2 Weight of fixed service equipment: In 

estimating dead loads for the purposes of design, the 
weight of fixed service equipment such as plumbing 
stacks and risers, electrical feeders, heating, 



ventilating, air conditioning and fire protection 
systems, shall be included. 

16053 Partition load: In offices and other buildings 
in which subdividing partitions are subsequently 
erected, rearranged or relocated, provisions shall be 
made to support the actual weight of such partitions 
where the partitions occur, or for an equivalent 
uniform load, which shall be assumed to be not less 
than 20 psf (97.64 kg/m 2 ) of floor area in addition to 
the specified uniformly distributed live load. 
Provisions for partition weight shall be made 
whether or not partitions are shown on the 
construction documents, unless the specified live 
load exceeds 80 psf (390.56 kg/m 2 ). 

780 CMR 1606.0 UNIFORMLY 
DISTRIBUTED LIVE LOADS 
1606.1 Uniform live load: The minimum uniformly 
distributed live load in pounds per square foot shall 
be as provided for in Table 1606.1, and for all 
concentrated loads wherever such loads occur as 
provided for in 780 CMR 1613.0. The live loads in 
Table 1606.1 are the minimum loads to be used for 
the occupancies listed. Where the building will be 
subjected to greater live loads, such loads shall be 
utilized for design. 

1606.1.1 Trucks and buses: Minimum live loads 
for garages having trucks or buses shall be in 
accordance with lane loads of AASHTO HB- 1 5 
listed in Appendix A, but shall not be less than 50 
psf (244 kg/m 2 ). 

1606.1.2 Residential attics: All live load shall be 
applied to joists or to bottom chords of trusses or 
trussed rafters only in those portions of attic space 
having a clear height of 42 inches (1067 mm) or 
more between joist and rafter in conventional 
rafter construction; and between bottom chord and 
any other member in trusses or trussed rafter 
construction. However, joists or the bottom 
chords of trusses or trussed rafters shall be 
designed to sustain the imposed dead load or ten 
psf (49 kg/m 2 ), whichever is greater, uniformly 
distributed over the entire span. 

A further ceiling dead-load reduction to a 
minimum of five psf (24 kg/m 2 ) or. the actual dead 
load, whichever is greater, applied to joists in 
conventional rafter construction or to the bottom 
chords of trusses or trussed rafters is permitted 
under either or both of the following conditions: 

1. Where the clear height is not over 30 
inches (762 mm) between joist and rafter in 
conventional construction and between the 
bottom chord and any other member for trusses 
or trussed rafter construction. 

2. Where a clear height of greater than 30 
inches (762 mm), as defined in 780 CMR 
1606.1 item 1, does not exist for a horizontal 
distance of more than 12 inches (305 mm) 
along the member. 



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STRUCTURAL LOADS 



Table 1606.1 

MINIMUM UNIFORMLY DISTRIBUTED 

LIVE LOADS 



Occupancy 



Live load 
(psff 



Occupancy 



Live load 
(psff 



Apartments (see Residential) 
Armories and drill rooms 
Assembly areas & theatres: 

Fixed seats 

Movable seats 

Platforms (assembly) 

Stage floors 
Balcony, decks (exterior) 

One-and two-family dwellings only 
Bowling centers, poolrooms and billiard rooms 
Cornices 

Corridors, except as otherwise indicated 
Dwellings (see Residential) 
Fire escapes 

Single-family residential buildings only 
Garages: 

Passenger cars 

Trucks and buses - see also 780 CMR 1606.1.1 
Grandstands (see Reviewing stands) 
Gymnasiums, main floors and balconies 
Hospitals 

Operating Rooms Laboratories 
Private Rooms 
Wards 

Corridors above first floor 
Hotels (see Residential) 
Institutional - residential care (see Residential) 
Libraries: 

Reading Rooms 

Stack rooms (books and shelves @ 40 pcf but 

not less than) 
Manufacturing 
Light 
Heavy 
Marquees 
Office buildings: 
Offices 
Lobbies 

Corridors, above first floor 
File and computer rooms require heavier 

loads based upon anticipated occupancy 
Penal Institutions: 

Cell Blocks 

Corridors 
Residential: 

Attics - see 780 CMR 1606.1 2 
Multiple - family dwellings: 

Dwelling units 

Public rooms 

Corridors 
One-and two-family dwellings (areas other than 

sleeping rooms) 

Sleeping rooms 
Decks, balconies, etc. 
Hotels: 

Guestrooms 

Public rooms 

Corridors serving public rooms 

Corridors 



60 
100 
100 
150 
100 
60 
75 
60 
100 

100 
40 

50 
50 



100 

40 
40 
80 



60 
150 



125 
150 

75 

50 
100 



40 
100 



40 
100 



30 
60 

40 
100 
100 
80 



Reviewing stands, grandstands and bleachers - see 

780 CMR 1614.5 100 

Schools 

Classrooms 50 

Corridors 80 

Flexible open plan areas 1 00 

Sidewalks, vehicular driveways, subject to 250 
trucking 

Skating rinks 100 

Stairs and exits 100 

Storage areas: 

Light 125 

Heavy 250 

Stores: 

Retail- 1st floor 100 

Retail - upper flloors 75 

Wholesale 100 

Yards and terraces, pedestrians 100 

Note a. 1 psf = 4.882 kg/nr. 

780 CMR 1607.0 DESIGN LIVE LOAD 

1607.1 Required live load: The live loads to be 
assumed in the design of buildings and structures 
shall be the greatest load produced by the intended 
occupancy, but not less than the minimum uniformly 
distributed unit loads required in 780 CMR 1606.0 
for specific use groups. 

1607.2 Loads not specified: The code official shall 
approve the required live load for any occupancy not 
specifically provided for in Table 1606.1. 

16073 Partial loading: The full intensity of the 
appropriately reduced live load applied only to a 
portion of the length of a structure or member shall 
be considered if such applied load produces a more 
unfavorable effect than the same intensity applied 
over the full length of the structure or member. 

780 CMR 1608.0 LIVE LOAD REDUCTION 
1608.1 General: The design live loads specified in 
780 CMR 1607.0 may be reduced as permitted and 
specified herein, except that -the design live load 
shall not be reduced on the following types of 
structural members: 

1 . One-way precast or cast-in-place solid, ribbed 
and hollow core concrete slabs. 

Exception: Ribs of ribbed or hollow core 
slabs may be treated as individual beams, and 
live load may be reduced on the ribs the same 
as for beams. 

2. Two-way concrete flat slabs and grid slabs, 
with or without capitals or drop panels. 

Exception: live load may be reducted on slab 
panels if there are beams on all sides of the 



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THE MASSACHUSETTS STATE BUILDING CODE 



panels, and load is transferred to the columns 
from these beams entirely by "beam shear". 

3. Hangers 

1608.2 Design live loads of 100 psf or less: Except 
for places of public assembly (as defined in 
780 CMR 210.) garages, and open parking 
structures, a structural member having a tributary 
area A T that is greater than A B may be designed for 
a reduced live load determined by the following 
formulas: 

L =NL 

N = the largest of the following: 

1. 1 - 0.0008 (A T - A B ) 

2. 0.75 - 0.20 (D /L ) 

3. 0.50 for members supporting load from 
more than one floor, or 0.60 for members 
supporting load from one floor only, in which: 

L = reduced design live load for the member 

L = basic design live load 

D = dead load on the member 

A T = loaded area tributary to the member, square 

feet 

A B = basic tributary area, square feet, defined as 

follows: 

A B = 100 square feet for members supporting 

load from more than one floor 

A B = 250 square feet for members supporting 

load from one floor only 

16083 Design live loads greater than 100 psf and 
design live loads for garages and open parking 
structures: Structrual members supporting load from 
more than one floor may be designed for a reduced 
live load equal to 80% of the design live load. 

1608.4 For determination of the number of floors 
supported by a member in 780 CMR 1608.1, 1608.2 
and 1608.3 a roof may be considered to be a floor if 
the design live load of the roof is equal to or greater 
than the design live load of the floor below. 

780 CMR 1609.0 ROOF LOADS 

1609.1 General: The structural supports of roofs and 
marquees shall be designed to resist wind (see 
780 CMR 161 1 .0) and, where applicable, snow (see 
780 CMR 1610.0) and earthquake loads (see 
780 CMR 1612.0) in addition to the dead load of 
construction and the appropriate live loads as 
prescribed in 780 CMR 1609.0, or in Tablel 606.1 

1609.2 Definitions: The following words and terms 
shall, for the purposes of 780 CMR 1609.0 and as 
used elsewhere in 780 CMR, have the meanings 
shown herein. 

Fabric awning: A fabric awning is an architectural 
projection that provides weather protection, iden- 
tity or decoration and is wholly supported by the 
building to which it is attached. An awning is 



comprised of a lightweight, rigid or retractable 
skeleton structure over which a fabric cover is 
attached. 

Fabric canopy: A fabric canopy is an architectural 
projection that provides weather protection, 
identity or decoration and is ground supported in 
addition to being supported by the building to 
which the canopy is attached. A canopy is 
comprised of a lightweight skeleton structure over 
which a fabric cover is attached. A fabric canopy 
is not a primary structure or a roof. 

16093 Minimum roof loads: Ordinary roofs, either 
flat, pitched or curved, shall be designed for the live 
loads as specified in Table 1 609.3 or the snow load, 
whichever is greater. 

1609.4 Overhanging eaves: In other than occupan- 
cies in Use Group R-3, and except where the over- 
hang framing is a continuation of the roof framing, 
overhanging eaves, cornices and other roof pro- 
jections shall be designed for a minimum uniformly 
distributed live load of 6Q psf (292.92 kg/m 2 ). 

Table 16093 
MINIMUM ROOF LIVE LOADS 3 



Roof slope 


Tributary loaded area in 

square feet 
for any structural member 




to 200 


201 to 600 


Over 600 


Flat, or rise less than 4 
inches per foot (1:3) 

Arch or dome with rise less 
than Vs of span 


20 


16 


12 


Rise 4 inches per foot (1 :3) 

to less than 12 inches per 

foot (1:1) 
Arch or dome with rise Ve of 

span or less than % of 

span 


16 


14 


12 


Rise 1 2 inches per foot (1:1) 

and greater 
Arch or dome with rise % of 

span or greater 


12 


12 


12 



Note a: loads are expressed in pounds per square foot of 

horizontal projection 

Note b: I square foot = 0.093 m 2 l psf = 4.882 kg/m 2 

1609.5 Ponding: Roofs shall- be designed for the 
maximum possible depth of water that would pond 
thereon as determined by the relative levels of roof 
deck and overflow weirs, scuppers, edges or 
serviceable drains in combination with the deflected 
structural elements. In determining the maximum 
possible depth of water, all primary roof drainage 
means shall be assumed to be blocked. 

1609.6 Special purpose roofs: Where occupied for 
incidental promenade purposes, roofs shall be 
designed for a minimum live load of 60 psf (292.92 
kg/m 2 ); and 100 psf (488.20 kg/m 2 ) where designed 
for roof gardens or assembly or educational 
occupancies. 



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FOUNDATIONS AND RETAINING WALLS 



1 . Remove all objectionable material. 

2. Effectively protect the steel surface from 
pile cutoff grade to a grade 15 feet (4.6 m) 
below the bottom of the objectionable material 
by means of: 

a. cathodic protection as approved by the 
code official; 

b. an approved encasement of not less than 
three inches (76 mm) of dense concrete; 

c. an effective protective coating subject to 
the approval of the code official; or 

d. providing an excess steel thickness of Vfe 
inch (3.2 mm) beyond design requirements 
on all exposed steel surfaces. 

1816.4.2 Timber piles: The preservative 
treatment of timber piles shall comply with the 
provisions of 780 CMR 1822.2. 

1816.5 Lateral support: Any soil shall be deemed 
to afford sufficient lateral support to permit the 
design of any type of pile as a short column. When 
piles are driven through soil which will be removed 
subsequent to the completion of the foundation, the 
resistance offered by such material shall not be 
considered to contribute to the lateral supporting 
capacity. 

1816.5.1 Column action: The portion of a pile 
that is not laterally supported shall be designed as 
a column in accordance with 780 CMR 19 taking 
into consideration the conditions of end fixity. 

1816.6 Group action: In cohesive soils, the 
compressive load capacity of a group of friction 
piles shall be analyzed by a generally accepted 
engineering method, and, where such analysis 
indicates, the individual allowable pile load shall be 
reduced accordingly. 

1816.7 Stability: 

1816.7.1 Wall foundations: All piles in wall 
foundations shall be staggered about the center of 
gravity of the wall load at a minimum distance of 
V2 the pile top diameter therefrom. A foundation 
wall restrained laterally so as to ensure stability 
both during and after construction may be 
supported by a single row of piles. 

1816.7.2 Columns: Individual columns supported 
on piles shall be designed for eccentricity between 
the column and the centroid of the supporting 
piles equal to a minimum of three inches (76 mm) 
or the actual eccentricity, whichever is greater. 
The design shall account for such eccentricity 
through one of the following methods: 

a. By supporting the column on a minimum of 
three piles in a triangular pattern. 

b. By designing walls, grade beams or 
structural floors to resist the bending moment 
induced by the eccentricity. 



c. By designing the piles, column or both to 
resist the bending moment induced by the 
eccentricity and providing adequate lateral 
restraint at the top of the piles to resist the 
lateral thrust due to the bending moment. 

1816.8 Structural integrity: Piles shall be installed 
in such a manner and sequence as to prevent 
distortion or damage to piles being installed or 
already in place, to the extent that such distortion or 
damage affects the structural integrity of the piles. 

When piles have been damaged in driving, or have 
been driven in locations and alignment other than 
those indicated on the plans, or have capacities less 
than required by the design, the affected pile groups 
and pile caps shall be investigated, and if necessary, 
the pile groups or pile caps shall be redesigned or 
additional piles shall be driven to replace the 
defective piles. 

1816.9 Spacing: The minimum center-to-center 
spacing of piles shall be not less than twice the 
average diameter of a round pile, nor less than PA 
times the diagonal dimension of a rectangular pile. 
When driven to or penetrating into rock, the spacing 
shall be not less than 24 inches (610 mm). When 
receiving principal support from end-bearing on 
materials other than rock or through frictional 
resistance, the spacing shall be not less than 30 
inches (762 mm) or as provided in 780 CMR 
1820.4.6 for Pressure Injected Footings. 

1816.10 Splices: Splices shall be avoided insomuch 
as practicable. When used, slices shall be 
constructed so as to provide and maintain true 
alignment and position of the component parts of the 
pile during installation and subsequent thereto, and 
shall be of adequate strength to transmit the vertical 
and lateral loads and moments occurring at the 
location of the splice during driving and under 
service loading. Splices shall develop not less than 
50% of the capacity of the pile in bending. 
Additionally, all pile splices occurring in the upper 
ten feet (3 m) of the embedded portion of the pile 
shall be capable of resisting at allowable working 
stresses the moment and shear that results from an 
assumed eccentricity of the pile load of three inches 
(76 mm); or the pile shall be braced in accordance 
with 780 CMR 1816.7 to other piles that do not have 
splices in the upper ten feet (3 m) of embedment. 

1816.11 Pile caps: Pile caps shall be of reinforced 
concrete. The soil immediately below the pile cap 
shall not be considered as carrying any vertical load. 
The tops of all piles shall be embedded not less than 
three inches (76 mm) into pile caps, and the caps 
shall extend at least four inches (102 mm) beyond 
the edges of all piles. The tops of all piles shall be 
cut back to sound material before capping. 

1816.11.1 Pile cap seismic connection: All 

concrete piles shall be connected to the pile cap so 



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that reinforcement is embedded in the pile cap for 
a distance equal to the development length as 
specified in ACI 318 listed in Appendix A. 

Field-placed dowels anchored in the concrete 
piles are acceptable. The development length to 
be provided is the full development length for 
compression without reduction in length for 
excess area. Where seismic confinement 
reinforcement at the top of the pile is required, 
alternative measures for laterally confining 
concrete and maintaining toughness and ductile- 
like behavior at the top of the pile shall be 
permitted provided consideration is given to 
forcing the hinge to occur in the confined region. 

Where a minimum length for reinforcement or 
the extent of closely spaced confinement 
reinforcement is specified at the top of the pile, 
provisions shall be made so that those specified 
lengths or extents are maintained after pile 
cut-off. 

1816.11.2 Pile foundation seismic ties: Piles or 
pile caps shall be interconnected by ties capable 
of resisting, in tension or compression, a force 
equal to 10% of the larger column dead plus live 
load. Individual tie beams are not required when 
it is demonstrated that equivalent restraint will be 
provided by structural members within slabs on 
grade or reinforced concrete slabs on grade or 
confinement by competent rock, cohesive soils, 
very dense granular soils or other approved 
means. 

1816.12 Pre-excavation: Jetting, augering and other 
methods of pre-excavation must be approved by the 
code official and carried out in the same manner as 
used for piles subject to load test and in a manner 
which will not impair the carrying capacity of the 
piles already in place or the safety of existing 
adjacent structures. Pre-excavation shall be of the 
same method as carried out on piles subject to load 
tests. Immediately after completion of jetting or 
augering, the pile shall be advanced to the maximum 
depth of pre-excavation and driven below this depth 
to the required load resistance. Where load tests are 
required, pre-excavation of test piles will be of the 
same manner as proposed for production piles. 

1816.13 Inspection: The owner shall engage a 
registered design professional who shall submit his 
qualifications in writing to the code official. This 
design professional, or his representative, who must 
be qualified by experience and training, shall be 
present at all times while piles are being driven to 
observe all work in connection with the piles. The 
design professional or his representative shall make 
an accurate record of the material and the principal 
dimensions of each pile, of the weight and fall of the 
ram, the type, size and make of hammer, cushion 
blocks, the number of blows per minute, the energy 
per blow, the number of blows per inch for, the last 



six inches (150 mm) of driving, together with the 
grades at point and cutoff and any other pertinent 
details. A copy of these records shall be signed by 
the registered design professional, and filed in the 
office of the code official. 

1816.14 Identification: All pile materials shall be 
identified for conformity to the specified grade with 
this identification maintained continuously from the 
point of manufacture to the point of installation or 
shall be tested by an approved agency to determine 
conformity to the specified grade and the approved 
agency shall furnish an affidavit of compliance to 
the code official . 

1816.15 Pile location plan: A plan showing the 
location and designation of all piles by an 
identification system shall be filed with the code 
official prior to installation of such piles. All 
detailed records for individual piles shall bear an 
identification corresponding to that shown on the 
plan. 

1816.16 Use of existing piles: Piles left in place 
where a structure has been demolished shall not be 
used for the support of new construction unless 
satisfactory evidence is submitted to the code 
official which indicates that the piles are sound and 
meet all of the requirements of 780 CMR. Such 
piles shall be load tested or redriven to verify their 
capacities. The design load applied to such piles 
shall be the lowest allowable load as determined by 
tests or redriving data. 

1816.17 Pile driveability: Pile cross sections shall 
be of sufficient size and strength to withstand 
handling and driving stresses without damage to the 
pile and to provide sufficient stiffness to transmit the 
required driving forces. Driven piles of uniform 
cross section or tapered piles shall have a minimum 
nominal diameter of eight inches (200 mm) except 
as provided in 780 CMR 1 820.6.4 for small diameter 
grouted piles, 780 CMR 1822.3.3 for timber piles 
and 780 CMR 1821.1 for precast concrete piles. 
Tapered shoes or points of lesser dimensions may be 
attached to the pile unit. 

1816.18 Pile heave: Adequate provision shall be 
made to observe pile heave. Accurate reference 
points shall be established on each pile immediately 
after installation; for cast-in-place piles with unfilled 
corrugated shells, the reference point shall be at the 
bottom of the pile. If, following the installation of 
other piles in the vicinity, heaving of 14 inch (13 
mm) or more occurs, the heaved piles shall be re- 
driven to develop the required capacity and 
penetration, or the capacity of the pile may be 
verified by load tests in accordance with 
780 CMR 1817.4. 



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CONCRETE 



1908.7.2 Unacceptable concrete: Concrete that 
has partially hardened or has been contaminated 
by foreign materials shall not be deposited in the 
structure. 

1908.7.3 Retempering: Retempered concrete or 
concrete that has been remixed after initial set 
shall not be used unless approved by the 
registered design professional. 

1908.7.4 Continuous concreting: Once started, 
concreting shall be carried on as a continuous 
operation until the placement of a panel or 
section, as defined by panel or section boundaries 
or predetermined joints, is completed except as 
provided for in 780 CMR 1909.4. 

1908.7.5 Placement in walls: Top surfaces of 
vertically formed lifts shall be generally level. 

1908.7.6 Construction joints: Where 
construction joints are required, such joints shall 
be made in accordance with 780 CMR 1909.4. 

1908.7.7 Consolidation: All concrete shall be 
thoroughly consolidated by suitable means during 
placement and shall be thoroughly worked around 
reinforcement and embedded fixtures and into 
comers of forms. 

1908.8 Curing: Concrete (other than high-early- 
strength) shall be maintained above 50°F (10°C) 
and in a moist condition for at least the first seven 
days after placement, except when cured in 
accordance with 780 CMR 1908.8.2. 

1908.8.1 High-early-strength concrete: High- 
early-strength concrete shall be maintained above 
50°F (10°C) and in a moist condition for at least 
the first three days after placement, except when 
cured in accordance with 780 CMR 1908.8.2. 

1908.8.2 Accelerated curing: If curing is to be 
accelerated, such curing shall be done in 
accordance with ACI 318. 

1908.9 Cold-weather requirements: Adequate 
equipment shall be provided for heating concrete 
materials and protecting concrete during freezing or 
near-freezing weather. 

1908.9.1 Frost: All concrete materials and all 
reinforcement, forms, fillers and ground with 
which concrete is to come in contact shall be free 
from frost. 

1908.9.2 Ice: Frozen materials or materials 
containing ice shall not be used. 

1908.10 Hot-weather requirements: During hot 
weather, attention shall be given to ingredients, 
production methods, handling, placing, protection 
and curing to prevent excessive concrete 
temperatures or water evaporation that would impair 
required strength or serviceability of the member or 
structure. 



780 CMR 1909.0 FORMWORK, EMBEDDED 
PIPES AND CONSTRUCTION JOINTS 

1909.1 Design of formwork: The design, 
fabrication and erection of forms shall result in a 
final structure that conforms to shapes, lines and 
dimensions of the members as required by the 
construction documents. 

1909.1.1 Form strength: Forms shall be 
substantial and shall be sufficiently tight to 
prevent leakage of concrete. 

1909.1.2 Form bracing: Forms shall be properly 
braced or tied together to maintain position and 
shape. 

1909.1.3 Form placement: Forms and their 
supports shall be designed so as not to damage 
previously placed structures. 

1909.2 Removal of forms and shores: Construction 
loads shall not be supported on, nor any shoring 
removed from, any part of the structure under 
construction except where that portion of the 
structure, in combination with the remaining 
forming and shoring system, has sufficient strength 
to support safely its weight and loads placed 
thereon. 

1909.2.1 Structural analysis: Sufficient strength 
shall be demonstrated by structural analysis 
considering proposed loads, strength of the 
forming and shoring system, and concrete strength 
data. Concrete strength data shall be based on 
tests of field-cured cylinders or, where approved, 
on other procedures to evaluate concrete strength. 
Structural analysis and concrete- strength test data 
shall be furnished to the code official when so 
required. 

1909.2.2 Construction loads: Construction loads 
exceeding the combination of superimposed dead 
load plus specified live load shall not be 
supported on any unshored portion of the 
structure under construction, unless analysis 
indicates adequate strength to support such 
additional loads. 

1909.2.3 Safety: Forms shall be removed in such 
a manner so as not to impair safety and 
serviceability of the structure. All concrete to be 
exposed by form removal shall have sufficient 
strength not to be damaged thereby. 

1909.2.4 Prestressed members: Form supports 
for prestressed concrete members shall not be 
removed unless sufficient prestressing has been 
applied to enable prestressed members to carry 
their dead load and anticipated construction 
loads. 

19093 Conduits and pipes embedded in concrete: 

Where conduits, pipes and sleeves of any material 
not harmful to concrete and within limitations of 



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780 CMR 1909 are embedded in concrete with the 
approval of the engineer, such embedments shall not 
be considered to replace structurally the displaced 
concrete, except as provided for in 780 CMR 
1909.3.5. 

19093.1 Aluminum conduit and pipe: Conduits 
and pipes of aluminum shall not be embedded in 
structural concrete unless effectively coated or 
covered to prevent aluminum concrete reaction or 
electrolytic action between aluminum and steel. 

1909.3.2 Structural effect: Conduits, pipes and 
sleeves passing through a slab, wall or beam shall 
not impair significantly the strength of the 
construction. 

190933 Columns: Conduits and pipes, including 
fittings, embedded within a column, shall not 
displace more than 4% of the area of the cross 
section on which strength is calculated or which 
is required for fire protection. 

19093.4 Slabs, walls or beams: Except where 
construction documents for conduits and pipes are 
approved by the registered design professional 
and the code official, conduits and pipes 
embedded within a slab, wall or beam (other than 
those merely passing through) shall: 

1 . Not be larger in outside dimension than Va 
of the overall thickness of the slab, wall or 
beam in which such conduits and pipes are 
embedded. 

2. Not be spaced closer than three diameters 
or widths on center. 

3. Not impair significantly the strength of the 
construction. 

190933 Displaced concrete: Conduits, pipes and 
sleeves shall not be considered in compression as 
replacing structurally the displaced concrete 
unless such conduits, pipes and sleeves: 

1. Are not exposed to rusting or other 
deterioration. 

2. Are of uncoated or galvanized iron or steel 
not thinner than standard Schedule 40 steel 
pipe. 

3 . Have a nominal inside diameter not over 
two inches and are spaced not less than three 
diameters on center. 

19093.6 Additional considerations: In addition 
to the other requirements of 780 CMR 1909.3, 
pipes that will contain liquid, gas or vapor which 
are embedded in structural concrete shall conform 
to the following conditions: 

1 . Pipes and fittings shall be designed to resist 
effects of the material, pressure and 
temperature to which the pipes and fittings will 
be subjected. 

2. Liquid, gas or vapor except water not 
exceeding 90 °F (32 °C) or 50 psi (345 kPa) 
pressure, shall not be placed in the pipes until 
the concrete has attained design strength. 



3 . In solid slabs, piping that is not used for 
radiant heating or snow melting shall be placed 
between top and bottom reinforcement. 

4. Concrete cover for pipes, conduit and 
fittings shall not be less than 114 inches (38 
mm) for concrete exposed to earth or weather 
conditions or % inch (19 m) for concrete not 
exposed to weather conditions or in contact 
with ground. 

5. Reinforcement with an area of not less than 
0.002 times the area of the concrete section 
shall be provided normal to piping. 

6. Piping and conduit shall be fabricated and 
installed so that cutting, bending or 
displacement of reinforcement from the proper 
location will not be required. 

1909.4 Construction joints: Construction joints 
shall be created using the procedures set forth in 
780 CMR 1909.4.1 through 1909.4.6. 

1909.4.1 Surface cleaning: Surface of concrete 
construction joints shall be cleaned and laitance 
removed. 

1909.4.2 Preparation of joint: Immediately 
before new concrete is placed, all construction 
joints shall be wetted and standing water shall be 
removed. 

1909.43 Effect on strength: Construction joints 
shall be so made and located as not to impair the 
strength of the structure. Provisions shall be 
made for the transfer of shear and other forces 
through construction joints. 

1909.4.4 Location of joints: Construction joints 
in floors shall be located within the middle third 
of the spans of slabs, beams and girders. Joints in 
girders shall be offset a minimum distance of two 
times the width of intersecting beams. 

1909.4.5 Support conditions: Beams, girders or 
slabs supported by columns or walls shall not be 
cast or erected until concrete in the vertical 
support members is not in a plastic state. 

1909.4.6 Monolithic pours: Beams, girders, 
haunches, drop panels and capitals shall be placed 
monolithically as part of a slab system, unless 
otherwise shown on the construction documents. 

780 CMR 1910.0 DETAILS OF 
REINFORCEMENT 
1910.1 General: Details of reinforcement shall 
comply with the requirements of 780 CMR 1910.0 
and ACI 3 1 8. Where unidentified reinforcement is 
approved for use, such reinforcement shall be tested 
in accordance with the following: 

Not less than three tension and three bending tests 
shall be made on representative specimens of the 
reinforcement from each shipment and grade of 
reinforcing steel proposed for use in the project. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

CONCRETE 

1910.2 Bending reinforcement: All reinforcement 
shall be bent cold, unless otherwise permitted by the 
registered design professional and approved. 
Reinforcement partially embedded in concrete shall 



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NON-TEXT PAGE 



346.2 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 



diagonal wood sheathing, wood structural panels or 
particleboard panels are installed, or where other 
sheathing as specified in 780 CMR 2305.13 is 
applied vertically in panels of not less than four feet 
by eight feet with approved fasteners complying 
with Table 2305.2. Other sheathing materials shall 
be permitted when tested in accordance with ASTM 
E72 listed in Appendix A. 

The lateral load resistance shall be established by 
the lesser of: the values determined by dividing the 
maximum load reported in the test by 2.5; or the 
load at which the deflection reported in the test 
exceeds /i/480, where h is the height of the test 
assembly. 

2305.8 Seismic bracing: Where structural analysis 
of the seismic force-resisting system is not provided, 
buildings shall meet the provisions of 780 CMR 
2305.0 and shall have roof and exterior wall dead 
loads less than or equal to 15 psf (73 kg/m 2 ) and 
floor dead loads less than or equal to 10 psf (49 
kg/m 2 ). 

Table 2305.8 

WALL SPACING AND HEIGHT 

LIMITATIONS FOR WOOD AND FRAME 

CONTRUCTION 



Seismic Performance 
Category 



Maximum distance 

between interior 
bracing walls (feet) 



25 



Maximum Stories 
(height) permitted 



! (30 feet) 



1 (20 feet) 



Note a: Applies only to Seismic Hazard Exposure Group 
I; engineering analysis required for Seismic Hazard 
Exposure Group II 

2305.8.1 Wall bracing required: All exterior 
walls and required interior bracing walls shall be 
braced by one of the types of sheathing prescrided 
in table 2305.8.1 for each 25 lineal feet (or 7.6 m) 
of exterior wall or required interior bracing wall 
length. The required length of sheathing shall be 
distributed along the length of the bracing wall 
with a minimum four foot panel of sheathing at, 
or within four feet of, each end. Construction of 
bracing walls shall comply with the requirements 
of 780 CMR 2305.9 

Table 2305.8.1 

MINIMUM SEISMIC WALL BRACING PER 

25 LINEAL FEET OF INTERIOR AND 

EXTERIOR WALL LENGTH a ' c 



Story location 


Sheathing 


A v = 0.12 


Top or only 
story 


GP 

W/SP 


7'-0" 
4'-0" 


First of two 
stories or second 
of three stories 


GP 
W/SP 


13'-0" 
7'-0" 


First of three 
stories 


GP 
W/SP 


Note c. 



WOOD 

Note a. Interpolation of the tabular values is permitted 

where the length of wall between exterior walls or 

interior-braced walls is less than 25 feet. 

Note b. GP = Gypsum or particleboard sheathing; W/SP 

= Diagonal wood boards or wood structural panels. 

Note c. Analysis of the seismic force-resisting system 

required. 

Note d. One foot = 304.8 mm. 

2305.8.2 Double-sheathed walls: Where braced 
walls are sheathed on both sides with identical 
sheathing, the required length of sheathing in 
Table 2305.8.1 is permitted to be taken as l A the 
tabular length. Where different sheathing 
materials are used on either side of a wall, the 
required length of sheathing in Table 2305.8.1 is 
permitted to be taken as Vi of the tabular length 
for the material requiring the greater length. 
Double-sheathed walls shall have a minimum 
length of four feet (1219 mm). 

2305.83 Stud walls: Stud walls that are less than 
the full height of the story shall be braced as 
required for exterior walls or interior-braced 
walls and shall be considered an additional story. 

2305.8.4 Sheathing installation: Sheathing shall 
be installed in accordance with the provisions of 
Table 2305.13 where acting as wall bracing. To 
be considered effective as bracing, the sheathing 
shall be at least 48 inches in width covering three 
16-inch stud spaces or two 24-inch stud spaces 
and be fastened to the wall studs in accordance 
with Table 2305.2. Sheathing shall be fastened to 
the wall studs, sole plate and top plate in 
accordance with Table 2305.2. All vertical joints 
of panel sheathing shall occur over studs and all 
horizontal joints shall occur over blocking at least 
equal in size to the studs. All framing in 
connection with sheathing used for bracing shall 
not be less than two inches nominal in thickness. 

2305.9 Braced wall: All exterior walls and interior- 
braced walls required by Table 2305.8, shall be 
constructed to transfer forces from roofs and floors 
to braced walls and from the braced walls in upper 
stories to the braced walls in the story below. 
Braced wall lines from the story above to the story 
below are permitted to be offset a maximum of 24 
inches (610 mm). Blocking, where required by 
780 CMR 2305.9, need only be provided for the 
length of the wall specified in Table 2305.8.1. 

2305.9.1 Roof to braced wall connections: Roof 
to interior-braced wall connections for buildings 
with maximum dimensions not over 50 feet 
(15240 mm) are permitted to be made at the 
intersection of exterior walls. Double top plates 
shall be lapped at the intersection and nailed in 
accordance with Table 2305.2. For buildings with 
maximum dimensions greater than 50 feet (15240 
mm), the interior-braced walls shall be fastened 
directly to the ceiling joist in accordance with 
780 CMR 2305.9.2 or 2305.9.3. 



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THE MASSACHUSETTS STATE BUILDING CODE 



2305.9.2 Parallel floor joist and braced wall 
connections: Where the floor framing is parallel 
to the braced wall line, joists shall be doubled 
directly beneath the braced wall line and nailed in 
accordance with Table 2305.2. 

Where the upper and lower braced walls are 
offset, the joist spaces between the offset braced 
walls shall be blocked with a minimum blocking 
size of two inches by six inches, spaced at 32 
inches (813 mm) on center, within the joist cavity 
under the braced wall, and positioned in the upper 
portion of the cavity. The upper braced wall is 
permitted to be nailed to the blocking with two 
16d nails at each piece of blocking. The lower 
braced wall shall be toe nailed, in accordance with 
Table 2305.2, to a joist located directly above the 
top plates. 

2305.9.3 Perpendicular floor joist and braced 
wall connections: Where the floor framing is 
perpendicular to the braced wall line, solid 
blocking for the full depth of the floor joist shall 
be provided for the length of bracing required. 
The interior-braced wall shall be nailed to the 
blocking in accordance with Table 2305.2. 

Where the upper and lower braced walls are 
offset, a minimum of two-inch by six-inch 
blocking shall be located in the upper portion of 
the joist space, directly beneath the upper braced 
wall and in the lower portion of the joist space, 
directly above the lower braced wall. 

2305.10 Multiple stories: Where the frame is more 
than one story in height and studs and posts are not 
continuous from sill to roof, the members shall be 
secured together with approved clips, splices or 
other connections to insure a continuous, well- 
integrated structure. Sheet metal clamps, ties or 
clips shall be formed of galvanized steel or other 
approved corrosion-resistant material equivalent to 
0.040-inch nominal thickness steel sheets for two- 
inch framing members and not less than 0.052-inch 
nominal thickness steel sheets for three-inch 
structural members. For four-inch and larger 
members, column splices and beam and girder 
supports shall comply with 780 CMR 2304. 1 . 

2305.11 Framing over openings: Headers, double 
joists, trusses or other approved assemblies which 
are of adequate size to transfer all superimposed 
loads to the vertical members shall be provided over 
all window and door openings in loadbearing walls 
and partitions. 

2305.12 Framing around flues and chimneys: 

Combustible framing shall be a minimum of two 
inches (51 mm), but shall not be less than the 
distance specified in 780 CMR 2114.0 and the 
mechanical code listed in Appendix A, from all 
flues, chimneys and fireplaces, and six inches (152 
mm) away from flue openings. 



2305.13 Wall sheathing: Except as provided for in 
780 CMR 1405.3 for weatherboarding or where 
stucco construction that complies with 780 CMR 
2506.0 is installed, all enclosed buildings shall be 
sheathed with one of the materials of the nominal 
thickness specified in Table 2305.13 or any other 
approved material of equivalent strength and 
durability. 

Table 2305.13 

MINIMUM THICKNESS OF WALL 

SHEATHING 



Sheathing type 


Minimum 
thickness 


Maximum shear 
wail stud spacing* 


Wood boards 


s /a inch 


24 inches on center 


Fiberboard 


7/16 inch 


1 6 inches on center 


Wood structural panel 


In accordance with Table 2307.3.5 


2-M-lor2-M-W 
Particleboard 


In accordance with Table 2308.5(2) 


Gypsum sheathing 


Vi inch 


1 6 inches on center 


Gypsum wallboard 


Viinch 


24 inches on center 


Reinforced cement 
mortar 


1 inch 


24 inches on center 



Note a. 1 inch = 25.4 mm. 

2305.13.1 Wood structural panel wall bracing: 

In buildings assigned to Seismic Performance 
Category D, where wood structural panel 
sheathing is installed structurally as covering on 
the exterior of outside walls, such sheathing shall 
be of the exterior type. Where used elsewhere 
structurally, wood structural panel sheathing shall 
be bonded by intermediate or exterior glue. 

2305.13.2 Paper-backed lath sheathing: In 

occupancies in Use Group R-3 and one-story 
commercial buildings with brick or similar 
veneers, the sheathing shall conform to 780 CMR 
2305.13 or shall consist of a layer of paper- 
backed lath complying with 780 CMR 2505.0 and 
a one-inch (25 mm) intermediate space which 
shall be mortar filled as each course of veneering 
is applied. 

2305.14 Flooring: The flooring of wood frame 
construction shall be of adequate strength and 
stiffness to support required loads and, where 
necessary for strength and for lateral support of the 
building, subflooring shall be provided. 

2305.14.1 Floor spans: Design stresses of floor 
joists shall be determined in accordance with 
AFPA NDS listed in Appendix A. Metal-plate- 
connected floor trusses shall be designed in 
accordance with TPI Design Specifications for 
Metal Plate Connected Parallel Chord Wood 
Trusses and AFPA NDS listed in Appendix A. 



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2/7/97 (Effective 2/28/97) 



CHAPTER 27 

ELECTRIC WIRING, EQUIPMENT AND SYSTEMS 

(780 CMR 27 is Entirely Unique to Massachusetts) 

2701.0: M.G.L. c. 143, § 3L, provides that all Code (527 CMR 12.00) listed in Appendix A and 

installation, repair and maintenance of wiring and promulgated by the Board of Fire Prevention 

electrical fixtures used for light, heat and power Regulations of the Commonwealth of 

purposes in buildings and structures shall be in Massachusetts, Department of Fire Services, 
conformance with the Massachusetts Electrical 



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NON-TEXT PAGE 



416 780 CMR - Sixth Edition 2/7/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SPECIAL CONSTRUCTION 



facing material. The dimensional limitation of 
120 square feet (11.16 m : ) shall not apply to 
sign facing sections made from flameresistant- 
coated fabric (ordinarily known as "flexible 
sign face plastic") that weighs less than 20 
ounces per square yard (678 g/nr) and which, 
when tested in accordance with NFiPA 701 
listed in Appendix A meets the requirements of 
both the small-scale test and the large-scale 
test, or which, when tested in accordance with 
an approved test method, exhibits an average 
burn time for ten specimens of two seconds or 
less and a burning extent of 15 centimeters or 
less. 

3102.6.5 Animated devices: Signs that contain 
moving sections or ornaments shall have fail- 
safe provisions to prevent the section or 
ornament from releasing and falling or shifting 
its center of gravity more than 15 inches (381 
mm). The fail-safe device shall be in addition 
to the mechanism and the mechanism's housing 
which operate the movable section or 
ornament. The fail-safe device shall be 
capable of supporting the full dead weight of 
the section or ornament when the moving 
mechanism releases. 

3102.7 Ground signs: The structural frame of 
ground signs shall not be erected of combustible 
materials to a height of more than 35 feet (10668 
mm) above the ground. In all locations, where 
constructed entirely of noncombustible material, 
ground signs shall not be erected to a height of 
greater than 100 feet (30480 mm) above the ground. 
Greater heights are permitted where approved and 
located so as not to create a hazard or danger to the 
public. 

3102.8 Roof signs: Roof signs shall comply with 
780 CMR 3102.8.1 through 3102.8.4. 

3102.8.1 Materials: All roof signs shall be 
constructed entirely of metal or other approved 
noncombustible material except as provided for in 
780 CMR 3102.6.4. Provisions shall be made for 
electric grounding of all metallic parts. Where 
combustible materials are permitted in letters or 
other ornamental features, all wiring and tubing 
shall be kept free and insulated therefrom. 

3102.8.2 Bottom clearance: There shall be a 
clear space of not less than six feet (1829 mm) 
between the lowest part of the sign and the roof 
level, except for necessary structural supports. 

3102.8.3 Closed signs: A closed roof sign shall 
not be erected to a height greater than 50 feet 
(15240 mm) above the roof of buildings of 
Types 1 and 2 construction, nor more than 35 feet 
(10668 mm) above the roof of buildings of 
Types 3, 4 and 5 construction. 



3102.8.4 Open signs: An open roof sign shall not 
exceed a height of 100 feet (30480 mm) above the 
roof of buildings of Types 1 and 2 construction; 
and not more than 60 feet (18288 mm) above the 
roof of buildings of Types 3, 4 and 5 construction. 

3102.9 Wall signs: Wall signs shall comply with 
780 CMR 3 1 02.9. 1 and 3 1 02.9.2. 

3102.9.1 Materials: Wall signs which have an 
area exceeding 40 square feet (3.72 m 2 ) shall be 
constructed of metal or other approved 
noncombustible material, except for nailing rails 
and as provided for in 780 CMR 3102.6.4. 

3102.9.2 Extension: Wall sigtv; shall not be 
erected to extend above the top of the wall, nor to 
extend beyond the ends of the wall to which the 
signs are attached unless such signs conform to all 
of the requirements for roof signs, projecting 
signs or ground signs. 

3102.10 Projecting signs: Projecting signs shall 
comply with 780 CMR 3102.10.1 through 
3102.10.4. 

3102.10.1 Materials: Projecting signs shall be 
constructed entirely of metal or other approved 
noncombustible material except as provided for in 
780 CMR 3102.6.4. 

3102.10.2 Maximum projection: A projecting 
sign shall not extend beyond a vertical plane that 
is two feet (610 mm) inside the curb line. 

3102.103 Clearance: A vertical clearance of not 
less than eight feet (2438 mm) shall be provided 
below all parts of projecting signs. 

3102.10.4 Additional loads: Projecting sign 
structures which will be used to support an 
individual on a ladder or other servicing device - 
whether or not specifically designed for the 
servicing device - shall be capable of supporting 
the anticipated additional load, but not less than a 
100-pound (45.4 kg) concentrated horizontal load 
and a 300-pound (136.2 kg) concentrated vertical 
load applied at the point of assumed or most 
eccentric loading. The building component to 
which the projecting sign is attached shall also be 
designed to support the additional loads. 

3102.11 Marquee signs: Marquee signs shall 
comply with 780 CMR 3102.11.1 through 
3102.11.3. 

3102.11.1 Materials: Marquee signs shall be 
constructed entirely of metal or other approved 
noncombustible material except as provided for in 
780 CMR 3102.6.4. 

3102.11.2 Attachment: Marquee signs shall be 
attached to approved marquees that are 
constructed in accordance with 780 CMR 
3203.11. 



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3102.11.3 Dimensions'. Marquee signs shall not 
project beyond the perimeter of the marquee. 

3102.12 Temporary signs: Temporary signs shall 
comply with 780 CMR 3102.12.1 through 
3102.12.4. 

3102.12.1 Banner and cloth signs: Temporary 
signs and banners which are attached to or 
suspended from a building, and which are 
constructed of cloth or other combustible 
material, shall be constructed in an approved 
manner and shall be securely supported. Such 
signs and banners shall be removed as soon as 
torn or damaged, and not later than 60 days after 
erection. Permits for temporary signs that are 
suspended from or attached to a canopy or 
marquee shall be limited to a period often days. 

3102.12.2 Maximum size: Temporary signs of 
combustible construction shall not be more than 
10 feet (3048 mm) in one dimension nor more 
than 500 square feet (46.5 m 2 ) in area. 

3102.123 Supports: Where more than 100 square 
feet (9.3 m 2 ) in area, temporary signs and banners 
shall be constructed and fastened to supports that 
are capable of withstanding the design loads listed 
in 780 CMR 1610.0. 

3102.12.4 Special permits: Temporary signs used 
for holidays, public demonstrations or promotions 
of civic welfare or charitable purposes, which 
extend across streets or other public spaces shall 
be subject to special approval of the authority 
having jurisdiction. 

3102.13 Diuminated signs: Illuminated signs shall 
comply with 780 CMR 3102.13.1 through 
3102.13.3. 

3102.13.1 Certificates: All electrically 
illuminated signs shall be certified as to electric 
wiring and devices by the agency having 
jurisdiction, and all wiring and accessory 
electrical equipment shall conform to the 
requirements of 527 CMR 12.00 listed in 
Appendix A. 

3102.13.2 Additional permits: Electrical permits 
shall be issued for the erection or maintenance of 
illuminated signs. 

3102.133 Relettering signs: The requirements of 
780 CMR 3102.13 shall not apply to the 
relettering of illuminated signs, except where such 
relettering requires a change of wiring or piping 
ofthcrigw. 

3102.14 Portable signs: Portable signs shall 
conform to all requirements for ground, roof, 
projecting, flat and temporary signs where such 
signs are used in a similar capacity. The 
requirements of 780 CMR 3102.14 shall not be 



construed to require portable signs to have 
connections to surfaces, tie-downs or foundations 
where provisions are made by temporary means or 
configuration of the structure to provide stability for 
the expected duration of the installation. 

3102.14.1 Electrical: Portable signs that require 
electrical service shall have a positive connecting 
device on the sign. Electrical service lines to the 
sign shall be protected from damage from all 
anticipated traffic. 

780 CMR 3103.0 MEMBRANE STRUCTURES 

3103.1 General: The provisions of 780 CMR 3 103.0 
shall apply to air-supported, air-inflated, membrane- 
covered cable and membrane-covextd frame 
structures, collectively known as membrane 
structures, erected for a period of 90 days or longer. 
Those erected for a shorter period of time shall 
comply with the applicable provisions of the fire 
prevention code, 527 CMR, listed in Appendix A 
and 780 CMR 3104.0. Membrane structures 
covering water storage facilities, water clarifiers, 
water treatment plants, sewage treatment plants and 
similar facilities not used for human occupancy, are 
required to meet only the requirements of 780 CMR 
3103.3.2 and 3103.6. 

3103.2 Definitions: The following words and terms 
shall, for the purposes of 780 CMR 3103.0 and as 
used elsewhere in 780 CMR, have the meanings 
shown herein. 

Membrane: As it pertains to membrane structures, a 
thin, flexible, impervious material capable of 
being supported by an air pressure of 1 .5 inches of 
water column (373 P). 

Membrane structures 
Air-inflated structure: A building where the 
shape of the structure is maintained by air 
pressurization of cells or tubes to form a barrel 
vault over the usable area. Occupants of such a 
structure do not occupy the pressurized area used 
to support the structure. 

Air-supported structure: A building wherein the 
shape of the structure is attained by air pressure 
and occupants of the structure- are within the 
elevated pressure area. Air-supported structures 
are of two basic types: 

Double skin: Similar to a single skin, but with 
an attached liner that is separated from the 
outer skin and provides an air space which 
serves for insulation, acoustic, aesthetic or 
similar purposes. 

Single skin: Where there is only the single 

outer skin and the air pressure is directly 

against that skin. 

Cable-restrained, air-supported structure: A 

structure in which the uplift is resisted by cables 

or webbings which are anchored to either 



428 



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2/7/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SITE WORK, DEMOLITION AND CONSTRUCTION 



3307.2 Removal of dust: Dust, sand blasts or other 
harmful agents which are used or which occur in 
construction operations shall be disposed of at or 
near the point of origin to prevent diffusion over 
adjoining premises or streets. 

3307.3 Protective equipment: Facilities shall be 
provided in approved closed containers for housing 
the necessary vision, respiratory and protective 
equipment required in welding operations, and in 
accordance with the regulations of the administrative 
authority. 

780 CMR 3308.0 PROTECTION OF 
ADJOINING PROPERTY 

3308.1 General: Adjoining property shall be 
completely protected from any damage caused by 
the construction of a structure when the owner of the 
adjoining property permits free access to the 
structure at all reasonable times to provide the 
necessary safeguards in accordance with 780 CMR 
3310.0. 

780 CMR 3309.0 EXISTING BUILDINGS 

3309.1 Protection: All adjoining public and private 
property shall be protected from damage caused by 
construction. 

3309.2 Chimney, soil and vent stacks: Wherever a 
new building or structure is erected to greater or 
lesser heights than an adjoining building, the 
construction and extension of new or existing 
chimneys shall conform to the provisions of the 
mechanical code listed in Appendix A, and the 
construction and extension of soil and vent stacks 
and the location of window openings shall comply 
with the provisions of 248 CMR. 

3309.3 Adjoining walls: The owner of the new or 
altered structure shall preserve all adjoining 
independent and party walls from damage as 
provided for herein. The owner shall underpin where 
necessary and support the adjoining building or 
structure by proper foundations to comply with 
780 CMR 3310.0. 

33093.1 Maintenance: In case an existing party 
wall is intended to be used by the person who 
causes an excavation to be made, and such party 
wall is in good condition and sufficient for the use 
of both the existing and proposed building, such 
person shall preserve the party wall from injury 
and shall support the party wall by proper 
foundations at said person's own expense, so that 
the wall is and remains as safe and useful as the 
party wall was before the excavation was 
commenced. During the demolition, the party wall 
shall be maintained weatherproof and structurally 
safe by adequate bracing until such time as the 
permanent structural supports have been provided. 



3309.3.2 Beam holes: Where a structure 
involving a party wall is being demolished, the 
owner of the demolished structure shall, at bis or 
her own expense, bend over all wall anchors at the 
beam ends of the standing wall and shall brick up 
all open beam holes and otherwise maintain the 
safety and usefulness of the wall. 

33093.3 Party wall exits: A party wall balcony 
or horizontal exit shall not be destroyed unless 
and until a substitute means of egress has been 
provided and approved. 

3309.4 Adjoining roofs: Where a new building or 
demolition of an existing building is being 
conducted at a greater height, the roof, roof outlets 
and roof structures of adjoining buildings shall be 
protected against damage with adequate safeguards 
by the person doing the work. 

780 CMR 3310.0 DEMOLITION AND 
EXCAVATION 

3310.1 Notice of intent: The person intending to 
cause a demolition or an excavation shall deliver 
written notice of such intent to the owner of each 
potentially affected adjoining lot, building or 
structure at least one week prior to the 
commencement of work. The notice shall request 
license to enter the potentially affected lot, building 
or structure prior to the commencement of work and 
at reasonable intervals during the work to inspect 
and preserve the lot, building or structure from 
damage. 

3310.2 Protection of adjoining property: If 

afforded the necessary license to enter the adjoining 
lot, building or structure, the person causing the 
demolition or excavation to be made shall at all 
times and at his or her own expense preserve and 
protect the lot, building or structure from damage or 
injury. If the necessary license is not afforded, it 
shall be the duty of the owner of the adjoining lot, 
building or structure to make safe his or her own 
property, for the prosecution of which said owner 
shall be granted the necessary license to enter the 
premises of the demolition or excavation. 

3310.2.1 Removal of debris: All waste materials 
shall be removed in a manner which prevents 
injury or damage to persons, adjoining properties 
and public rights-of-way. 

33103 Notice to the code official: If the person 
causing a demolition or excavation to be made is not 
afforded license to enter an adjoining structure, that 
person shall immediately notify in writing both the 
code official and the owner of the adjoining property 
that the responsibility of providing support to the 
adjoining lot building or structure has become the 
exclusive responsibility of the owner of the 
adjoining property. 



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443 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



3310.4 Grading of lot: Where a structure has been 
demolished or removed and a building permit has 
not been approved, the vacant lot shall be filled, 
graded and maintained in conformity to the 
established elevation of the street grade at curb level 
nearest to the point of demolition or excavation. 
Provision shall be made to prevent the accumulation 
of water or damage to any foundations on the 
premises or the adjoining property. 

3310.5 Utility connections: All service utility 
connections shall be discontinued and capped in 
accordance with the approved rules and the 
requirements of the authority having jurisdiction. 

780 CMR 3311.0 RETAINING WALLS AND 
PARTITION FENCES 

3311.1 General: Where the adjoining grade is not 
higher than the legal level, the person causing an 
excavation to be made shall erect, where necessary, 
a retaining wall at his or her own expense and on his 
or her own land. Such wall shall be built to a height 
sufficient to retain the adjoining earth, shall be 
properly coped as required in 780 CMR 1825.0 and 
shall be provided with a guardrail or fence not less 
than 42 inches (1067 mm) in height. 

780 CMR 3312.0 STORAGE OF MATERIALS 
AND CONSTRUCTION EQUIPMENT 

3312.1 General: The term "construction equipment" 
shall mean the machinery, tools, derricks, hoists, 
scaffolds, platforms, runways, ladders and all 
material-handling equipment, safeguards and 
protective devices used in construction operations. 
The term "runway" shall mean an aisle or walkway 
constructed or maintained as a temporary 
passageway for pedestrians or vehicles. All 
construction materials and equipment required for 
the permitted construction shall be stored and placed 
so as not to endanger the public, the workers or 
adjoining property. 

3312.2 Design capacity: Construction materials and 
equipment stored within the building, or on 
sidewalks or sheds, shall be placed so as not to 
overload any part of the construction beyond the 
design capacity, nor interfere with the safe 
prosecution of the work. 



3312.3 Pedestrian walkways: Construction 
materials and equipment shall not be stored on the 
street without a permit issued by the administrative 
authority having jurisdiction. Where so stored, such 
materials or equipment shall not unduly interfere 
with vehicular traffic or the orderly travel of 
pedestrians on the highway or street. The piles shall 
be arranged to maintain a safe walkway not less than 
four feet (1219 mm) wide, unobstructed for its full 
length, and adequately lighted at night and at all 
necessary times for the use of the Public. 

3312.4 Obstructions: Construction materials and 
equipment shall not be placed or stored so as to 
obstruct access to fire hydrants, standpipes, fire or 
police alarm boxes, utility boxes, catch basins or 
manholes, nor shall such material and equipment be 
located within 20 feet (6096 mm) of a street 
intersection, or placed so as to obstruct normal 
observations of traffic signals or to hinder the use of 
public transit loading platforms. 

780 CMR 3313.0 REMOVAL OF WASTE 
MATERIAL 

3313.1 General: Material shall not be dropped by 
gravity or thrown outside the exterior walls of a 
building during demolition or erection. Wood or 
metal chutes shall be provided for the removal of 
such materials. Where the removal of any material 
will cause an excessive amount of dust, such 
material shall be wet down to prevent the creation of 
a nuisance. 

780 CMR 3314.0 STAIRWAYS 
3314.1 Temporary stairways: Where a building has 
been constructed to a height greater than 50 feet 
(15240 mm) or four stories, or where an existing 
building exceeding 50 feet (15240 mm) in height is 
altered, at least one temporary lighted stairway shall 
be provided unless one or more of the permanent 
stairways are erected as the construction progresses. 

780 CMR 3315.0 LIGHTING 
3315.1 General: All stairways and parts of 
buildings under demolition, erection or repair shall 
be adequately lighted while persons are engaged at 
work, in accordance with the provisions of 
780 CMR 1024.0 and 527 CMR 12.00. 



444 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
REPAIR, ALTERATION, ADDITION AND CHANGE OF USE OF EXISTING BUILDINGS 



3404.8 Means of egress lighting: Means of egress 
lighting shall be provided in accordance with 
780 CMR 1024.0. 

3404.9 Height and Area limitations: The height 
and area requirements of 780 CMR 5 shall apply to 
existing buildings when such existing buildings are 
modified by addition and/or change in use. 
Modifications to the height and area requirements as 
provided in 780 CMR 504.0 and 506.0 are 
permitted. 

3404.10 Existing Fire and party walls: No further 
compliance is required with 780 CMR 707.0. The 
height above the roof of existing fire, party and 
exterior walls need not comply with 780 CMR 
3404.0 

3404.11 Fire Protection Systems: Fire Protection 
Systems: Design, installation and maintenance of 
fire protection systems shall be provided in 
accordance with 780 CMR 3404.3 and 780 CMR 

3404.12 as applicable. 

3404.12 Fire protection systems are required for 
the following cases: 

1 . Additions where required by 780 CMR 9.0 for 
the specific use group. 

2. For existing buildings and additions to existing 
buildings, where required by 780 CMR 9 or 
where required by 780 CMR 506 to satisfy height 
and area requirements. 

3. Existing buildings, or portions thereof which 
are substantially altered or substantially 
renovated, and where otherwise required by 
780 CMR 9.0 for the specific use group. 

Note: Notwithstanding the provisions of 
780 CMR 3404.12, automatic Fire Suppression 
systems are required in municipalities which have 
adopted the provisions of MGL cl48 § 26G, H or 
I (See Official Interpretation Number 45-96 listed 
in Appendix B). 

3404.13 Enclosure of stairways: Open stairways 
are prohibited except in one- and two-family 
dwellings or unless otherwise permitted by 
780 CMR 10. There shall be no minimum 
fireresistance rating required for an existing 
enclosure of a stairway. Partitions or other new 
construction which is added in order to fully and 
solidly enclose a stairway shall provide a minimum 
fireresistance rating of one hour. All doors in the 
enclosure shall be self-closing and tight-fitting with 
approved hardware. All doors in those portions of 
the stairway which are fireresistance rated shall 
comply to the applicable provisions of 780 CMR 9. 

3404.14 Assembly Use Groups: Notwithstanding 
the provisions of 780 CMR 3404, Assembly Use 
Groups shall comply with the provisions of 
780 CMR 3400.3, item 6. 



3404.15 Institutional Use Groups: Notwithstanding 
the provisions of 780 CMR 3404, Institutional Use 
Groups shall comply with the provisions of 
780 CMR 3400.3, item 7. 

3404.16 Residential Use Groups: Notwithstanding 
the provisions of 780 CMR 3404, Residential Use 
Groups shall comply with the provisions of 
780 CMR 3400.3, item 8. 

3404.17 Fire hazard to adjacent buildings: Any 

proposed change in the use or occupancy of an 
existing building which has the effect of increasing 
the fire hazard to adjacent buildings shall comply 
with the requirements of Table 705.2 for exterior 
wall fire resistance rating requirements, or with 
approved compliance alternatives. 

3404.18 Accessibility for Persons with 
Disabilities: Accessibility requirements shall be in 
accordance with 521 CMR as listed in Appendix A. 

3404.19 Energy Conservation: Energy 
conservation requirements shall be in accordance 
with 780 CMR 3407.0. 

780 CMR 3405.0 REQUIREMENT FOR 
CHANGE IN USE GROUP TO TWO OR 
MORE HAZARD INDICES GREATER 

3405.1 General: When the existing use group is 
changed to a new use group of two or more hazard 
indices higher (as provided in Table 3403), the 
existing building shall conform to the requirements 
of the code for new construction, except as provided 
in 780 CMR 3408 or as otherwise allowed in 
780 CMR 3407.0. 

3405.2 Accessibility for Persons with Disabilities: 

Accessibility requirements shall be in accordance 
with 521 CMR as listed in Appendix A. 

780 CMR 3406.0 COMPLIANCE 
ALTERNATIVES 

3406.1 General: Where compliance with the 
provisions of the code for new construction, required 
by 780 CMR 34, is impractical because of 
construction difficulties or regulatory conflicts, 
compliance alternatives may be accepted by the 
building official. 

Examples of compliance alternatives which have 
been used are provided in Appendix F. The 
building official may accept these compliance 
alternatives or others proposed. 

3406.2 Documentation: In accordance with 
780 CMR 3402.1.5, the building official shall ensure 
that the BBRS is provided with information 
regarding compliance alternatives accepted or 
rejected by the building official. 



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449 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



780 CMR 3407.0 ENERGY PROVISIONS 
FOR EXISTING BUILDINGS 

3407.1 General: 780 CMR 3407.0 establishes the 
energy provisions for existing buildings governed by 
780 CMR 3404.0 or 780 CMR 3405.0. 

3407.2 Compliance: Alterations to any building 
component affecting energy conservation 
performance of an existing building shall comply 
with: 

(a) 780 CMR 3407, Table 3407 (COMPONENT 
VALUES FOR ALTERED ELEMENTS) and all 
applicable subsections of 780 CMR 13.0, or, 

(b) 780 CMR 1314.4 for thermal envelope 
requirements and all other applicable 
requirements of 780 CMR 13.0, or; 

(c) 780 CMR 1314.5 for thermal envelope 
requirements and all other applicable 
requirements of 780 CMR 13.0, or; 

(d) 780 CMR 1315.0 in its entirety, or; 

(e) 780 CMR 1315.0 as supplemented by 
780 CMR 1316.0 



3407.3 Exempt buildings: Refer to 780 CMR 

1301.4 for thermally exempt buildings and 
780 CMR 1313.1.2 for lighting exemptions. 

3407.4 Compliance exceptions 

3407.4.1 Fenestration: When alterations to a 
wall assembly include only altering the 
fenestration component, the areas of fenestration 
may be decreased or replaced with an opaque wall 
element made to comply with the thermal 
transmittance value of the existing wall. 

3407.4.2 Ordinary repairs: Ordinary repairs 
need not comply with the energy provisions. 

3407.43 Roofs: Compliance of the roof/ceiling 
assembly is not required unless the existing 
roofing material is stripped off the roof deck. 
However, if a structural analysis by a registered 
professional engineer shows that the roof will not 
support the additional live loads imposed by 
compliance of the roof/ceiling assembly, or, if 
such analysis shows that addition of the required 
amount of insulation will cause ponding of water, 
then compliance of the roof/ceiling assembly is 
not required. 



TABLE 3407 
COMPONENT VALUES FOR ALTERED ELEMENTS 



WALLS 


All wall construction containing heated or mechanically cooled space 


0.08 


6,8 


Foundation Walls 
Including Band 


Containing heated or mechanically cooled space 
Containing unheated space 


0.08 
0.17 


4 


Roof/Ceiling Assembly 


Wood plank and beam construction containing heated or mechanically 
cooled space 


0.08 


1 


Roof/Ceiling Assembly 


Construction other than wood plank and beam containing heated or 
mechanically cooled space 


0.05 




Doors, Skylights and 
Windows 


All construction enclosing heated or mechanically cooled space 


0.65 
0.65 


2,7 
5 
6 


Floors 


Floor sections over area exposed to outside air or unheated areas 
Unheated slab on grade 
Heated slab on grade 


0.08 
5.50 (R) 
7.75 (R) 


3 


Mechanical Equipment 


Heating, cooling, sizing and efficiency 


780 CMR 1310.0, 
1311.0 


9 


Equipment Controls 


Humidistats, thermostats & zoning 


780 CMR 1310.0 


9 


Duct and Pipe 
Insulation and 
Construction 


Located in or on buildings 


780 CMR 1310.0 
1310.0 




Electrical Distribution. 


- 


780 CMR 1312.0 
1312.3 




Lighting 


Lighting 


780 CMR 1313.0 





Note 1. Wood plank and beam assemblies are constructions in which the finished interior surface is the underside of 

the roof deck. 

Note 2. Double glazing or storm windows will satisfy the required U Value of 0.65. 

Note 3. Insulation may be omitted from floors over unheated areas when foundation walls are provided with a U value 

of 0.1 7. 

Note 4. The U value requirement of 0.17 for foundation walls may be omitted when floors over unheated spaces are 

provided with a U value of 0.08. 

Note 5. Allowable air infiltration values for windows - .50 cfm/lin. ft. of operable sash crack; residential doors - 

(sliding) .50 cfm/sf., (entrance) 1.25 cfm/sf.; commercial doors 1 1 cfm/lin.ft. 



450 



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12/12/97 (Effective 8/28/97) 



CHAPTER 35 



MANUFACTURED BUILDINGS, MANUFACTURED BUILDING COMPONENTS 
AND MANUFACTURED HOUSING 

(This Chapter is entirely unique to Massachusetts) 



780 CMR 3501.0 GENERAL 

3501.1 Scope: The provisions of 780 CMR 35 shall 
govern the materials, design, manufacture, handling, 
storage, transportation, assembly, construction 
and/or installation of manufactured buildings and 
manufactured building components intended for 
installation in the Commonwealth of Massachusetts. 
Manufactured buildings or manufactured building 
components shall not be installed in any jurisdiction 
of the Commonwealth of Massachusetts unless such 
manufactured buildings or manufactured building 
components have been approved and certified in 
accordance with 780 CMR 35, applicable provisions 
of 780 CMR and the Rules and Regulations for 
Manufactured Buildings, Manufactured Building 
Components and Manufactured Housing, 780 CMR 
R3, as listed in Appendix A. 

3501.2 Manufactured housing: When constructed 
in accordance with the Code of Federal Regulations 
(CFR) Title 24, Chapter XX - Office of Assistant 
Secretary for Housing - Federal Housing 
Commissioner, Department of Housing and Urban 
Development, Parts 3280, Manufactured home 
construction and safety standards, and 3282, 
Manufactured home procedural and enforcement 
regulations; manufactured housing shall be exempt 
from the provisions of 780 CMR 35. 

Exceptions: 

1. Foundations for manufactured housing shall 
conform to 780 CMR 1806 through 1813, or 
780 CMR 3604 as applicable; 

2. Additions, (when not a manufactured home as 
defined herein) and site built modifications shall 
conform to 780 CMR in its entirety, as applicable. 

780 CMR 35010 DEFINITIONS 
3502.1 General: The following words and terms 
shall, for the purposes of 780 CMR 35 and as used 
elsewhere in 780 CMR shall have the meaning 
shown herein. 

Approved: Approval by the State Board of Building 
Regulations and Standards (BBRS). 

Manufactured Building Component: Any 

manufactured subsystem, manufactured sub- 
assembly, or other manufactured system designed 
for use in or part of a structure having concealed 
elements such as electrical, mechanical, plumbing 
and fire protection systems and other systems 
affecting health and safety, including variations 



which are submitted as part of the building 
systems. 

Certification: Any manufactured building, 
manufactured building component or 
manufactured housing which meets the provisions 
of applicable codes and 780 CMR R3 pursuant 
thereto, as listed in Appendix A; which has been 
labeled accordingly. 

Code: 780 CMR (The Commonwealth of 
Massachusetts State Building Code) or 
specialized codes as defined herein, and as listed 
in Appendix A. 

Department (DPS): The Department of Public 
Safety, Division of Inspections. 

Inspection Agency: An independent agency, 
sometimes referred to as the "third-party agency", 
retained by the manufacturer and approved by the 
BBRS to perform inspections and evaluations of 
manufactured building systems, compliance 
assurance programs, manufactured buildings and 
manufactured building components. 

Installation: The process of affixing, or assembling 
and affixing a manufactured building, 
manufactured building component or 
manufactured housing unit(s) on the building site, 
and connecting it to utilities, and/or to an existing 
building. Installation may also mean the 
connecting of two or more manufactured housing 
units designed and approved to be so connected 
for use as a dwelling. 

Installer of Manufactured Building: An individual, 
who on the basis of training and experience, has 
been certified by a specific manufacturer of 
manufactured buildings as competent to supervise 
the placement and connection required to install 
the manufactured products of that manufacturer. 
Said certification by the manufacturer shall be in 
writing, and the certified installer shall be issued 
picture identification by the manufacturer in 
verification of his\her certification. 

Label: An approved device or seal evidencing 
certification in accordance with the applicable 
codes and rules and regulations promulgated 
pursuant thereto, and as listed in Appendix A. 



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461 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Local Enforcement Agency: A department or 
agency in a municipality charged with the 
enforcement of 780 CMR and appropriate 
specialized codes which include, but are not 
limited to, 248 CMR (the State Fuel Gas and 
Plumbing Code) and 527 CMR 12.00 (the State 
Electrical Code), as listed in Appendix A. 

Manufactured Building: Any manufactured 
building which has concealed elements, such as 
electrical, mechanical, plumbing, fire protection, 
insulation, and other systems affecting health and 
safety, and which is manufactured or assembled in 
accordance with 780 CMR and pertinent 
regulations, in manufacturing facilities, on or off 
the building site. Also, any manufactured 
building as defined above which does not have 
concealed elements, but which has been approved 
by the BBRS at the request of the manufacturer. 
"Manufactured building" does not mean 
"manufactured home". 

Manufactured Homes (Housing): As defined in 24 
CFR, Part 3280.2; a structure, transportable in 
one or more sections, which in the traveling 
mode, is eight body feet or more in width or forty 
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 with or without a permanent 
foundation when connected to the required 
utilities, and includes the plumbing, heating, air- 
conditioning, and electrical systems contained 
therein. Calculations used to determine the 
number of square feet in a structure will be based 
on the structure's exterior dimensions measured at 
the largest horizontal projections when erected on 
site. These dimensions will include all 
expandable rooms, cabinets, and other projections 
containing interior space, but do not include bay 
windows. (See 24 CFR, Part 3280.2 for a more 
detailed description of manufactured homes as 
defined by the Department of Housing and Urban 
Development.) 

Specialized Code: All building codes, rules or 
regulations pertaining to building construction, 
reconstruction, alteration, repair, or demolition 
promulgated by and under the authority of the 
various agencies which have been authorized 
from time to time by the General Court of the 
Commonwealth of Massachusetts. The 

specialized codes shall include, but are not limited 
to, 248 CMR (the State Fuel Gas and Plumbing 
Code) and 527 CMR 12.00 (the Electrical Code), 
as listed in Appendix A. 



780 CMR 3503.0 CONSTRUCTION 
DOCUMENTS 
3503.1 Building System Plans: The building 
system plans shall show in sufficient detail the 
approved system to which the manufactured building 
or building component was produced; including 
foundation connection details, component 
connection details, emergency escape window 
locations and sizes, structural design loads, the 
manufacturer's data plate, the location of all labels 
required of 780 CMR 35 and 780 CMR R3, and 
other details as may be required by the Division of 
Inspection. The building system plan shall bear 
evidence of the approval of the Division of 
Inspection and evidence of third party engineering 



780 CMR 3504.0 APPROVAL 

3504.1 General: The Commonwealth of 
Massachusetts, Department of Public Safety, 
Division of Inspection (hereinafter referred to as the 
"Division of Inspection" in 780 CMR 35) shall 
evaluate manufactured buildings and building 
components and recommend approval to the BBRS 
of those which it determines to be in compliance 
with applicable sections of 780 CMR 35, other 
applicable sections of 780 CMR, and 780 CMR R3, 
as listed in Appendix A. 

All approvals of plumbing, electrical or gas 
systems shall be made by the appropriate state 
agencies having jurisdiction, as specified in 
780 CMR R3, as listed in Appendix A. 

3504.2 Approved tests: The Division of Inspection 
may utilize the results of approved tests to determine 
whether a manufactured building or manufactured 
building component meets the requirements of this 
chapter and the 780 CMR R3 as listed in 
Appendix A, if that determination cannot be made 
from evaluation of plans, specifications and 
documentation alone. 

3504.3 Approval of compliance assurance 
programs: The Division of Inspection shall evaluate 
manufacturers' compliance assurance programs and 
make recommendations for approval to the BBRS 
of those which it determines to be in compliance 
with this chapter and 780 CMR R3, listed in 
Appendix A. 

3504.4 Authorization to vary: A manufactured 
building, manufactured building component or a 
compliance assurance program heretofore approved 
in accordance with 780 CMR 3503.3, shall not be 
varied in any way without prior authorization by the 
BBRS in accordance with 780 CMR R3, as in 
Appendix A. 



462 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - BUILDING PLANNING 

Figure 3603. 1.5d 

MINIMUM UNIFORM SNOW LOAD MAP 

ZONE 4 




V/iLUA.'-T5m' 




S-4£LfeLlg-i£ 
&»As»tvi LL5- 



List of Towns in Minimum Uniform 







Snc w Load Zones Zone 4 






Adams 


Colrain 


Hancock 


Monterey 


Plainfield 


Tolland 


;'■.,:.;. Aiford 


Conway 


Hawley 


Montgomery 




Tyringham 


Ashfield 


Cummin gton 


Heath 


Mount Washington 


Richmond 








Hinsdale 




Rowe 


Washington 


Becket 


Dalton 


Huntington 


New Ashford 


Russell 


W. Stockbridge 


Blandford 






New Marlborough 




Westhampton 


Buckland 


Egremont 


Lanesborough 




Sandisfield 


Williamsburgh 






Lee 


North Adams 


Savoy 


Williamstown 


Charlcmont 


Florida 


Lenox 




SheflSeld 


Windsor 


Cheshire 




Leyden 


Otis 


Shelboume 


Worthington 


Chester 


Goshen 






Stockbridge 


- 


Chesterfield 


Granville 


Middlefield 


Peru 






Clarksburg 


Great Barrington 


Monroe 


Pittsfield 







2/7/97 (Effective 2/28/97) 



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473 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 3603.1.6 

ALLOWABLE LIVE LOAD DEFLECTION 

OF STRUCTURAL MEMBERS 



STRUCTURAL MEMBER 


ALLOWABLE 
DEFLECTION 


Rafters having slopes greater than 3 in 12 
-no finished ceiling attached to rafters 


L/180 


Interior walls and partitions 


H/180 


Floors and veneer plastered ceilings 


L/360 


Gypsum panel ceilings and all other 
structural members 


L/240 



Notes: 

L = Span length; H = Span height 

780 CMR 36032 

CONSTRUCTION IN AREAS SUBJECT 

TO FLOODING 

3603.2.1 Flood Resistant Construction: 

Construction in areas designated as subject to 
flooding on the community Flood Insurance Rate 
Map (FIRM) shall be designed and constructed in 
accordance with the applicable provisions of 
780 CMR 3 107. 

780 CMR 36033 FIRERESISTANCE RATING 
OF EXTERIOR WALLS 

36033.1 Exterior walls: Exterior walls located less 
than three feet (0.914m) from property lines shall 
have a minimum of one-hour fire-resistive rating. 
The fire-resistive rating of exterior walls located less 
than three feet (0.914 m) from a property line shall 
be rated for exposure from both sides. Projections 
beyond the exterior wall shall not extend more than 
12 inches (0.305 m) into areas where openings are 
prohibited. 

360332 Openings: Openings shall not be permitted 
in exterior walls of dwellings located less than three 
feet (914 mm) from the property line. This distance 
shall be measured perpendicular to the vertical plane 
of the wall. 

780 CMR 3603.4 DWELLING UNIT 
SEPARATION 

3603.4.1 Two-family dwellings: Dwelling units in 
two-family dwellings shall be separated by wall and/ 
or floor-ceiling assemblies of not less than one-hour 
fire-resistive rating when tested in accordance with 
ASTM E 119, as listed in Appendix A. Fire- 
resistive-rated floor-ceiling and wall assemblies 
shall extend to, and be tight against, the exterior wall 
and wall assemblies shall extend to the underside of 
the roof sheathing. 

3603.4.2 Supporting construction: When floor 
assemblies are required to be fire-resistive rated by 
780 CMR 3603.4.1, the supporting construction of 
such assemblies shall have an equal or greater fire- 
resistive rating. 



3603.43 Sound transmission: Wall and floor- 
ceiling assemblies separating dwelling units shall 
provide airborne sound insulation for walls and both 
airborne and impact sound insulation for floor- 
ceiling assemblies. 

3603.43.1 Airborne noise: Airborne sound 
insulation for wall and floor-ceiling assemblies 
shall meet a Sound Transmission Class (STC) of 
45 when tested in accordance with ASTM E 90. 

3603.43.2 Penetrations: Penetrations or 
openings in the assembly for pipes, ventilation or 
exhaust ducts shall be sealed, lined, insulated or 
otherwise treated to maintain the required ratings. 

3603.433 Structural-borne noise: Impact sound 
insulation for floor-ceiling assemblies shall meet 
an Impact Insulation Class (DC) of 45 when tested 
in accordance with ASTM E 492. Floor covering 
may be included in the assembly to obtain the 
required rating. 

780 CMR 3603.5 GARAGE SEPARATION 

3603.5.1 Opening protection: Openings from a 
private garage directly into a room used for sleeping 
purposes shall not be permitted. Other openings 
between the garage and dwelling shall be equipped 
with either solid wood doors not less than 1% inch 
(45 mm) in thickness or 20-minute fire-rated doors. 
Self closing devices and fire resistive rated door 
frames are not required. All door openings between 
the garage and the dwelling shall be provided with a 
raised sill with a minimum height of four inches. 

3603.5.2 Fire Separation: The garage shall be 
separated from the residence and its attic area by 
means of minimum 5 /s inch (16 mm) type X gypsum 
board applied to the garage side. Wherever the attic 
area is continuous between the garage and the 
dwelling a firestop of s /e inch (16 mm) type X 
gypsum board with a minimum of one coat 
compound and tape shall be used to form a barrier to 
separate the garage and dwelling. 

3603.53 Floor surface: Garage and carport floor 
surfaces shall be constructed of concrete or other 
approved noncombustible material.- Slab on grade 
construction shall be in accordance with the 
provisions of 780 CMR 3605.5. The minimum 
floor thickness shall be 3 Vi inches. The area of floor 
used for parking of automobiles or other vehicles 
shall be sloped to facilitate drainage toward the main 
vehicle entry/exit doorway. 

780 CMR 3603.6 LIGHT, VENTILATION AND 

HEATING 
3603.6.1 Light required: Every room or space 
intended for human occupancy shall be provided 
with natural or artificial light. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - BUILDING PLANNING 



Exception 1: Every bathroom and toilet room 
shall, as a minimum, be provided with artificial 
light. 

Exception 2: All interior and exterior stairways 
shall be provided with artificial light providing 
direct or indirect illumination and capable of 
illuminating the entire length of the stairway and 
associated landings. The control for activation of 
the required interior stairway lighting shall be 
accessible at the top and bottom of each stair 
without traversing any step of the stair and shall 
otherwise be installed in accordance with the 
requirements of 527 CMR 12.00, the 
Massachusetts State Electrical Code, as listed in 
Appendix A. The illumination of exterior stairs 
shall be controlled from inside the dwelling unit 
unless continuously illuminated or automatically 
activated. 

3603.6.2 Ventilation required: Every room or 
space intended for human occupancy shall be 
provided with natural or mechanical ventilation. 

Exception: Every bathroom and toilet room shall 
be equipped with a mechanical exhaust fan and 
associated ductwork with the fan exhausting, as a 
minimum, at 50 cfm if operated intermittently or 
20 cfm if continuously operated. Such bathroom 
exhaust shall vent directly to the outside and no 
exhaust vent termination to attics or other interior 
portions of the building are allowed. 

3603.6.3 Heating required: One and two family 
dwellings shall be designed with heating systems 
complying with the requirements of 780 CMR 
3603.21. 

3603.6.4 Natural light 

3603.6.4.1 General: Should natural lighting be 
chosen as a lighting option, in the application of 
the provisions of 780 CMR 3603.0 for habitable 
and occupiable rooms, unless otherwise 
specifically required by the provisions of 
780 CMR 4 for special occupancies, the 
requirements of 780 CMR 3603.6.4.2 through 
780 CMR 3603.6.4.6 shall apply. 

3603.6.4.2 Minimum glazing area: Every room 
or space intended for human occupancy shall have 
an exterior glazing area of not less than 8% of the 
floor area. Vz of the required area of glazing shall 
be openable. Glazed openings shall be located 
such that they open directly onto a street or public 
alley, or a yard or court, or other open space 
located on the same lot as the building. Glazed 
openings are permitted to face into a roofed porch 
where the porch abuts a street, yard or court, or 
other open area and the longer side of the porch is 
at least 65% open and unobstructed and the 



ceiling height of the porch is not less than seven 
feet (2134 mm). 
Exceptions: 

1 . Glazed areas need not be openable where 
the opening is not required by 780 CMR 
3603.10.4 and an approved mechanical 
ventilation system is provided which is capable 
of producing 0.35 air change per hour in the 
room or a whole-house mechanical ventilation 
system is installed capable of supplying 
outdoor ventilation air of 15 cubic feet per 
minute (cfm) (7.08 L/s) per occupant computed 
on the basis of two occupants for the first 
bedroom and one occupant for each additional 
bedroom. 

2. The glazed areas may be omitted in rooms 
where the opening is not required by 780 CMR 
3603.10.4 and an approved mechanical 
ventilation system is provided capable of 
producing 0.35 air change per hour in the room 
or a whole-house mechanical ventilation 
system is installed capable of supplying 
outdoor ventilation air of 15 cfm (7.08 L/s) per 
occupant computed on the basis of two 
occupants for the first bedroom and one 
occupant for each additional bedroom, and 
artificial light is provided capable of producing 
an average illumination of six foot-candles 
(6.46 Ix) over the area of the room at a height 
of 30 inches (762 mm) above the floor level. 

3603.6.43 Adjoining spaces: Where natural light 
for rooms or spaces without exterior glazing areas 
is provided through an adjoining room, the 
unobstructed opening to the adjoining room shall 
be at least 8% of the floor area of the interior 
room or space, but not less than 25 square feet 
(2.33 m ). The exterior glazing area shall be based 
on the total floor area being served. 

3603.6.4.4 Stairways: See 780 CMR 3603.6.1, 
Exception 2 

3603.6.4.5 Hallways: Natural light shall be 
capable of penetrating the full length of the 
hallway. 

3603.6.4.6 Bathrooms and toilet rooms: See 

780 CMR 3603.6.1, Exception 1. 

3603.6.5 Artificial light 

3603.6.5.1 General: Artificial light shall be 
capable of providing the minimum illumination 
considered safe for the specific space application 
(an average illumination of six foot candles over 
the area of a room at a height of 30 inches above 
the floor is typically considered acceptable except 
for bathrooms and toilet rooms where three foot- 
candles, so measured is typically considered 
acceptable). 



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475 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



3603.6.6 Natural ventilation 

3603.6.6.1 General: Natural ventilation of an 
occupied space shall be provided by means of 
windows, doors, louvers ot other natural openings 
to the outdoor air. 

3603.6.6.2 Ventilation area required: The 

minimum openable area to the outdoors shall be 
4% of the floor area being ventilated. 

3603.6.6.2.1 Adjoining spaces: Where rooms 
and spaces without openings to the outdoors 
are ventilated through an adjoining room, the 
unobstructed opening to the adjoining room 
shall be at least 8% of the floor area of the 
interior room or space, but not less than 25 
square feet (2.33 m ). The ventilation openings 
to the outdoors shall be based on the total floor 
area being ventilated. 

3603.6.6.2.2 Bathrooms and toilet rooms: 
See 780 CMR 3603.6.2, Exception. 
3603.6.6.23 Openings below grade: 
Openings below grade shall be acceptable for 
natural ventilation provided that the outside 
horizontal clear space measured perpendicular 
to the opening is 1 Vi times the depth below the 
average adjoining grade. 

3603.6.63 Openings onto yards, courts or open 
areas: Natural ventilation shall be provided by 
openings onto yards, courts or other open space 
on the same lot. 

3603.6.7 Mechanical ventilation 

3603.6.7.1 General: Mechanical ventilation shall 
conform to the requirements of 780 CMR 36 and 
otherwise to the requirements of the BOCA 
National Mechanical Code listed in Appendix A. 

3603.6.8 Ventilation of special spaces 

3603.6.8.1 Roof spaces: Enclosed attics and 
enclosed rafter spaces formed where ceilings are 
applied directly to the underside of roof rafters, 
shall have cross ventilation for each separate 
space by ventilation openings that are protected 
against the entrance of rain and snow. The 
openings shall be covered with corrosion-resistant 
mesh not less than V* inch (6 mm) nor more than 
14 inch (13 mm) in any direction. 

3603.6.8.1.1 Ventilating area: The minimum 
required net free ventilating area for such roof 
spaces shall be V 150 of the area of the space 
ventilated, except that the minimum required 
area shall be reduced to '^qq, provided that: a 
vapor retarder having a permeance not 
exceeding one perm is installed on the warm 
side of the ceiling; or at least 50% and not 
more than 80%, of the required ventilating area 
is provided by ventilators located in the upper 
portion of the space to be ventilated at least 



three feet (914 mm) above eave or cornice 
vents, with the balance of the required 
ventilation provided by eave or cornice vents. 
3603.6.8.2 Basements, cellars and crawl 
spaces: All basements, cellars which are not 
used as habitable, occupiable space, and crawl 
spaces, other than crawl spaces used as an 
underfloor plenum, shall be ventilated by 
openings in exterior foundation walls, by 
openable windows or by approved mechanical 
means. Openings or openable windows shall be 
located as near as practical to provide cross 
ventilation. The openings shall be covered 
with corrosion resistant mesh not less than V* 
inch (6 mm) nor more than Vi inch (13 mm) in 
any direction, except than when openable 
windows are used for basement or cellar 
ventilation, standard window screens may be 
used as the corrosion resistant mesh. 
Exception: 

1. Basements or cellars used as habitable, 
occupiable space (Typically basements and 
cellars are not classified as habitable, 
occupiable space - see Definitions, 
780 CMR 2 and 1202) shall satisfy the 
ventilation requirements of 780 CMR 
3603.6.6 or 780 CMR 3603.6.7, as 
applicable. 

2. All basements and cellars containing 
solid fuel fired or fossil fired appliances 
shall additionally satisfy combustion air 
requirements of 780 CMR 361 1.1 
3603.6.8.2.1 Opening size: Openings or 
openable windows shall have a net area of 
not less than one square foot (0.093 m 2 ) for 
each 150 square feet (13.95 m 2 ) of 
foundation floor area. Where an approved 
vapor retarder is installed over the ground 
surface, the required net area of openings 
shall be reduced to 0.1 square foot (0.093 
m 2 ) for each 150 square feet (13.95 m ) and 
where vents are provided, they shall have 
manually operable louvers. 

Exception: Basements and cellars not 

used as habitable, occupiable space shall 

be provided with a minimum of four 

sliding type, or awning type basement 

windows for every 1500 square feet of 

floor area, or multiples thereof, and shall 

be located, as near as practical, to provide 

cross ventilation. 

3603.6.83 Alternative mechanical 

ventilation: Enclosed attics, rafter, basement, 

cellar and crawl spaces which are not 

ventilated as herein required shall be equipped 

with a mechanical ventilation system 

conforming to the requirements of the BOCA 

National Mechanical Code listed in 

Appendix A. 



476 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - BUILDING PLANNING 



3603.20.3 Louvered windows or jalousies: 

Regular, float, wired or patterned glass in jalousies 
and louvered windows shall be no thinner than 
nominal 3/16 inch (4.76 mm) and no longer than 48 
inches (1219 mm). Exposed glass edges shall be 
smooth. Wired glass with wire exposed on 
longitudinal edges shall not be used in jalousies or 
louvered windows. 

3603.20.4 Safety glazing: 

3603.20.4.1 Human impact loads: Individual 
glazed areas, including glass mirrors, in hazardous 
locations such as those indicated in 780 CMR 
2405.2 shall pass the test requirements of CPSC 
16 CFR; 1201 and shall conform to the 
requirements ofMG.L. c 143, §§ 3T, 3U and 
3V, as applicable, listed in Appendix A. The 
requirements of this section and 780 CMR 2405.2 
and 2407.0 shall apply equally to replacement 
glass and new glass installation. Additional 
requirements as specified in 780 CMR 2407.2 are 
to be satisfied for glass used in locations where 
the hazard is of a continuous nature, such as glass 
enclosures for sporting activities as identified in 
780 CMR. 
Exceptions: 

1. Polished wired glass used in required fire 
resistance rated assemblies or polished wire 
glass used in hazardous locations such as 
those indicated in 780 CMR 3603.20.4.2, 
items 6,7,8 and 9 shall comply with ANSI 
Z97. 1 , listed in Appendix A. 

2. Plastic glazing shall meet the weathering 
requirements of ANSI Z97.1 listed in 
Appendix A. 

3. Glass-block walls shall comply with 
780 CMR 21 15.0. 

3603.20.4.1.1 Identification: Each light of 
safety glazing material installed in hazardous 
locations as defined in 780 CMR 3603.20.4.2 
shall bear a permanent identifying mark issued 
by an approved agency which specifies the 
marking agency, whether manufacturer or 
installer, and the test standard. 
Exceptions: 

1. Polished wire glass is exempt from a 
permanent identifying mark provided that 
the distributor or the installer provides an 
affidavit certifying that the polished wire 
glass complies with ANSI Z9 7.1 listed in 
Appendix A, 

2. Laminated glass is exempt from a 
permanent identifying mark provided that 
the distributor or installer provides an 
affidavit certifying that the laminated glass 
complies with CPSC 16 CFR 1201, listed in 
Appendix A. 

3603.20.4.2 Specific hazardous locations: 

The following shall be considered specific 



hazardous locations for the purposes of 
glazing: 

1 . Glazing in ingress and means of egress 
doors except jalousies (see 780 CMR 
2402.5). 

2. Glazing in fixed and sliding panels of 
sliding (patio) door assemblies and panels in 
swinging doors. 

3. Glazing in storm doors. 

4. Glazing in all unframed swinging doors. 

5. Glazing in doors and enclosures for hot 
tubs, whirlpools, saunas, steam rooms, 
bathtubs and showers. Glazing in any 
portion of a building wall enclosing these 
compartments where the bottom exposed 
edge of the glazing is less than 60 inches 
(1525 mm) above a standing surface. 

6. Glazing in an individual fixed or 
operable panel adjacent to a door where the 
nearest exposed edge of the glazing is within 
a 24-inch (610 mm) arc of either vertical 
edge of the door in a closed position and 
where the bottom exposed edge of the 
glazing is less than 60 inches (1525 mm) 
above the walking surface. 

7. Glazing in an individual fixed or 
operable panel, other than in those locations 
described in 780 CMR 3603.20.4.2 items 5. 
and 6., which meets all of the following 
conditions: 

a. Exposed area of an individual pane 
greater than nine square feet (0.84 m ); 

b. Exposed bottom edge less than 18 
inches (460 mm) above the floor: 

c. Exposed top edge greater than 36 
inches (915 mm) above the floor; and 

d. One or more walking surface(s) within 
36 inches (915 mm) horizontally of the 
plane of the glazing. 

8. All glazing in guards and railings 
regardless of area or height above a walking 
surface. Included are structural baluster 
panels and nonstructural in-fill panels. 

9. Glazing in walls and fences enclosing 
indoor and outdoor swimming pools where 
the bottom edge of the glazing on the pool 
side is less than 60 inches (1525 mm) above 
a walking surface and within 36 inches (914 
mm) horizontally of a walking surface. This 
shall apply to single glazing and all panes in 
multiple glazing. 

Exception: The following products, 
materials and uses shall not be considered 
specific hazardous locations: 

1. Glazed openings in doors through 
which a three-inch (76 mm) sphere is 
unable to pass. 

2. Assemblies of leaded glass or faceted 
glass and items of carved glass used for 
decorative purposes in locations described 
in 780 CMR 3603.20.4.2, items 1 ., 6. or 7. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



3. Glazing as described in 780 CMR 
3603.20.4.2, item 6., where there is an 
intervening wall or some other permanent 
barrier that will prevent a person 
approaching the door from accidentally 
striking the glazing. 

4. Glazing as described in 780 CMR 
3603.20.4.2, item 7., where a protective 
bar is installed 34 inches to 38 inches (864 
mm to 965 mm) above the floor on the 
side of the glazing having access thereto. 
The bar shall be capable of withstanding a 
horizontal load of 50 pounds per linear 
foot (730 N/m) without contacting the 
glass and be a minimum of 1 l A inches (38 
mm) in height The protective bar may be 
an applied bar or an integral part of the 
glazed framing dividing an upper lite 
from a lower lite. 

5. Outboard panes in insulating glass 
units and other multiple-glazed panels as 
described in 780 CMR 3603.20.4.2, item 
7., where the bottom exposed edge of the 
glass is 25 feet (7620 mm) or more above 
any grade, roof, walking surface or other 
horizontal or sloped (within 45 degrees of 
horizontal) surface adjacent to the glass 
exterior. 

6. Louvered windows and jalousies 
complying with the requirements of 
780 CMR 3603.20.3. 

7. Glazing, including mirrors, mounted 
or hung on a surface that provides a 
continuous backing support. 

3603.20.5 Sloped glazing and skylights 

Note: Also refer to 780 CMR 2404.0 and 2405.0. 

3603.20.5.1 Sloped glazing: Any installation of 
glass or other transparent, translucent or opaque 
glazing material which is installed at a slope of 1 5 
degrees (0.26 rad) or more from the vertical plane 
— including skylights, roofs and sloped 
walls— shall comply with 780 CMR 3603.20.5. 

3603.20.5.2 Allowable glazing materials: Sloped 
glazing shall be any of the following materials, 
subject to the limitations specified in 780 CMR 

3603.20.5.3 and the exceptions specified in 
780 CMR 3603.20.5.4: 

1 . For monolithic glazing systems, the glazing 
material of the single light or layer shall be 
laminated glass with a minimum 30-mil (762 
um) polyvinyl butyral interlayer, wired glass, 
approved plastic materials, heat-strengthened 
glass or fully tempered glass. 

2. For multiple-layer glazing systems, each 
light or layer shall consist of any of the glazing 
materials specified in 780 CMR 3603.20.5.2, 
item 1. 

For additional requirements for plastic skylights, 
see 780 CMR 2608.0. 



3603.20.53 Limitations: Where used in 
monolithic glazing systems, heat-strengthened 
glass and fully tempered glass shall have screens 
installed below the glazing material, subject to the 
exceptions in 780 CMR 3603.20.5.4, to protect 
building occupants from falling glass should 
breakage occur. The screens shall be capable of 
supporting the weight of the glass and shall be 
substantially supported below and installed within 
four inches (102 mm) of the glass. The screens 
shall be constructed of a noncombustible material 
not thinner than No. 12 B & S Gage (0.0808 inch) 
with a mesh not larger than one inch (25 mm by 
25 mm). In a corrosive atmosphere, structurally 
equivalent non-corrosive atmosphere, structurally 
equivalent non-corrosive screening materials shall 
be used. Where used in multiple-layer glazing 
systems as the bottom glass layer over the 
walking surface, heat-strengthened glass, fully 
tempered glass and wired glass shall be equipped 
with screening that conforms to the requirements 
specified for monolithic glazing systems. 

3603.20.5.4 Exceptions: In monolithic and 
multiple-layer sloped glazing systems, the 
following exceptions apply: 

1. Fully tempered glass installed without 
protective screens where glazed between 
intervening floors at a slope of 30 degrees 
(0.52 rad) or less from the vertical plane shall 
have the highest point of the glass ten feet 
(3048 mm) or less above the walking surface. 

2. Screens are not required below any glazing 
material, including annealed glass, where the 
walking surface below the glazing material is 
permanently protected from the risk of falling 
glass or the area below the glazing material is 
not a walking surface. 

3. Any glazing material, including annealed 
glass, is permitted to be installed without 
screens in the sloped glazing systems of 
detached greenhouses, provided that the height 
of the greenhouse at the ridge does not exceed 
20 feet (6096 mm) above grade. Greenhouse 
frames shall be noncombustible if the height of 
the sloped glazing exceeds 20 feet (6096 mm) 
above grade. 

4. Screens shall not be required where fully 
tempered glass or laminated glass with a IS 
mil polyvinyl butyral interlayer is used as 
single glazing or as both panes in an insulating 
glass unit, and all of the following conditions 
are met: 

a. Each pane of glass is 16 square feet (1.5 
m ) or less in area; 

b. The highest point of the glass is 12 feet 
(3658 mm) or less above any walking 
surface or other area having access thereto; 
and 

c. The glass thickness is 3 / 16 inch (5 mm) or 
less. 



484 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FOUNDATIONS 

FIGURE 36043.1a 

CONCRETE AND MASONRY 

FOUNDATION DETAILS 

(-BEARING WALL 
3 1/2" MIN.- 



>5S 






BASEMENT OR CRAWL SPACE 
WITH CONCRETE WALL AND SPREAD 
FOOTING 



BASEMENT OR CRAWL SPACE WITH 
FOUNDATION WALL BEARING 
DIRECTLY ON SOL 



For SI 1 inch = 25.4 mm, 1 foot = 304.8 mm. 

NOTES: 

1 . Exterior footings shall extend to below the frost line unless otherwise protected against frost heave. In no case shall 
exterior footings be less than 12 inches below grade. 

2. Footing widths (W) shall be based on the load-bearing value of the soil in accordance with Table 3604.1 .4 or shall 
be designed in accordance with accepted engineering practice. 

3. Spread footings shall be a minimum of six inches thick, and footing projections (P) shall be a minimum two inches 
and shall not exceed the footing thickness. 

4. Footings shall be supported on undisturbed natural soil or engineered fill. 

5. The sill plate or floor system shall be anchored to the foundation with 14-inch-diameter bolts placed six feet on 
center and not more than 12 inches from comers. Bolts shall extend a minimum of 15 inches into masonry or eight 
inches into concrete. Sill plates shall be protected against decay where required by 780 CMR 3603.22. 

6. Pier and column footing sizes shall be based on the tributary load and allowable soil pressure in accordance with 
Table 3605.2.3.3b. 



12/12/97 (Effective 8/28/97) 



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491 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

FIGURE 36043.1b 
TYPICAL DETAILS FOR WOOD FOUNDATION BASEMENT WALL 



FIELD APPLIED 2 BY 6 TOP PLATE 
FLASHING 

2 BY 6 TOP PLATE 

2 BY 6 PRESSURE TREATED WOOD STUD WALL 
INSULATED AS APPROPRIATE AND WARM SIDE 
VAPOR BARRIER 



1" THICK LUMBER OR PLYWOOD STRIP 
PROTECTING TOP OF POLYETHYLENE FILM 



FINISH GRADE SLOPE V 2 ' PER FOOT 
MINIMUM 6' FROM WALL 



PLYWOOD (See Table 3604.4.3.3) 
6 MIL POLYETHYLENE FILM 



6 MIL POLYETHYLENE FILM ON 
CRUSHED STONE OR GRAVEL BACKFILL 



y OR 4- CONCRETE SLAB WITH OPTIONAL 
1- SCREED BOARD AND VAPOR BARRIER 



2 BY 6 BOTTOM PLATE PRESSURE TREATED 

WOOD 
2 BY 8 FOOTING PLATE PRESSURE TREATEC 
WOOD 

4' GRAVEL OR CRUSHED STONE FILL 




For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. 



492 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FOUNDATIONS 

FIGURE 36043.1c 
TYPICAL DETAILS FOR WOOD FOUNDATION CRAWL SPACE WALLS 



ROOR JOIST 

FIELD APPLIED 2 BY 6 TOP PLATE 

FLASHING 

2 BY 6 TOP PLATE 




FINISH GRADE SLOPE V 2 " PER FOOT 
MINIMUM 6' FROM WALL 



6 MIL POLYETHYLENE FILM 
PLYWOOD (See Table 3604.4 J J 



2 BY 8 FOOTINO PLATE PRESSURE 

TREATED WOOD 

4" GRAVEL OR CRUSHED STONE 

BELOW FROST LINE 



For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. 



TABLE 3604.3.1 

MINIMUM WIDTH OF CONCRETE OR 

MASONRY FOOTINGS (inches) 



LOAD-BEARING VALUE OF SOIL (psf) 



1,500 2,000 2,500 3,000 3,500 4,000 



Conventional Wood Frame Construction 



1 -story 


16 


12 


10 


8 


7 


6 


2-story 


19 


15 


12 


10 


S 


7 


3-story 


22 


17 


14 


11 


10 


9 



4-inch Brick Veneer over Wood Frame or 8-inch 
Hollow Concrete Masonry 



1 -story 


19 


15 


12 


10 


8 


7 


2-story 


25 


19 


15 


13 


11 


10 


3-story 


31 


23 


19 


16 


13 


12 



8-inch Solid or Fully Grouted Masonry 



1 -story 


22 


17 


13 


11 


10 


9 


2-story 


31 


23 


19 


16 


13 


12 


3-story 


40 


30 


24 


20 


17 


15 



For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. 



TABLE 360433 

MINIMUM INSULATION REQUIREMENTS 

FOR FROST-PROTECTED FOOTINGS IN 

HEATED BUILDINGS 



VERTICAL 
INSULA- 
TION R- 

VALUE 2 - 4 


HORIZONTAL 

INSULATION R- 

VALUE 3 ' 5 


HORIZONTAL 

INSULATION 

DIMENSIONS PER 

FIGURE 3604.3.3 

(inches) 


along walls 


at comers 


A 


B 


C 


4.5 


NR 


NR 


NR 


NR 


NR 



For SI: 1 inch = 25.4 mm, °F = 1.8°C + 32 

1 . Insulation requirements are for protection against frost 
damage in heated buildings. Greater values may be 
required to meet energy conservation standards. 
Interpolation between values is permissable. 

2. Air Freezing Index values based on 1,500 °F days. 

3. Insulation materials shall provide the stated minimum 
R-values under the long term exposure to moist, below- 
ground conditions in freezing climates. The following R- 
values shall be used to determine insulation thickness 
required for this application: Type II expanded polystyrene - 
2.4R per inch; Type IV extruded polystyrene - 4.5R per 
inch; Type VI extruded polystyrene - 4.5R per inch; Type 
IX expanded polystyrene - 3.2R per inch; Type X extruded 
polystyrene - 4.5R per inch. NR indicates that insulation is 
not required. 

4. Vertical insulation shall be expanded polystyrene 
insulation or extruded insulation. 

5. Horizontal insulation shall be extruded polystyrene 
insulation. 



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493 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

FIGURE 3604.3.3a 

INSULATION PLACEMENT FOR FROST-PROTECTED FOOTINGS 

IN HEATED BUILDINGS 



INSULATION DETAIL 




L 



inmmnmm 



■ VERTICAL WALL INSULATION' 
HORIZONTAL INSULATON' 
— NOMINAL 4" THICK GRANULAR BASE 



HORIZONTAL INSULATION PLAN 




For SI: 1 inch = 25.4 mm. 

1. See table 3604.3.3 for required dimensions and .re- 
values for vertical and horizontal insulation. 

780 CMR 3604.4 FOUNDATION WALLS 
3604.4.1 Concrete and masonry foundation walls: 

Foundation walls shall be constructed in accordance 
with the provisions of 780 CMR 3604.4 or in 
accordance with ACI 318, ACI 318.1, NCMA 
TR68-A or ACI 530/ASCE 5/TMS 402 as listed in 
Appendix A, or other approved structural systems. 

3604.4.1.1 Masonry and concrete wall 
construction: Masonry and concrete foundation 
walls shall be constructed as in accordance with 
Table 3604.4.1.1a. 

Exception: Where unstable soil conditions 
exist or where the foundation extends to or 
below the seasonal high groundwater table, 



foundation walls shall be constructed in 
accordance with Table 3604.4.1.1b. 

3604.4.1.2 Design: Foundation walls subject to 
more pressure than would be exerted by backfill 
having an equivalent fluid weight of 30 pounds 
per cubic foot (141 kN/m 3 ) shall be designed in 
accordance with accepted engineering practice by 
a registered professional engineer or registered 
architect. 

3604.4.1.3 Grade Clearance: Foundation walls 
shall extend at least eight inches above the 
finished grade adjacent to the foundation at all 
points. 

Exception: Where masonry veneer is used, 
foundation walls shall extend a minimum of four 
inches (102 mm) above the finished grade. 



494 



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2/7/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FOUNDATIONS 

TABLE 3604.4.1.1a 

MINIMUM THICKNESS AND ALLOWABLE 

DEPTH OF UNBALANCED FILL FOR 

UNREINFORCED MASONRY AND 

CONCRETE FOUNDATION WALLS W 

WHERE UNSTABLE SOIL OR 

GROUNDWATER CONDITIONS DO NOT 

EXIST 







MAXIMUM 


FOUNDATION WALL 


NOMINAL 
THICKNESS 


DEPTH OF 


CONSTRUCTION 


UNBALANCED 




(inches) 


FILL 1 (feet) 


Masonrv of Hollow Units, 


8 


4 


Ungrouted 


10 


5 




12 


6 


Masonry of Solid Units 


6 


3 




8 


5 




10 


6 




12 


7 


Masonry of Hollow or Solid 


8 


7 


Units, Fully Grouted 


10 


8 




12 


8 


Plain Concrete 


6 4 


6 




8 


7 




10 


8 




12 


8 


Rubble Stone Masonry 


16 


8 


Masonry of hollow units 






reinforced vertically, 






with No. 4 bars and grout 






at 24 inches on center. 


8 


7 


Bars located not less 






than 4'/i inches from 






pressure side of wall. 







For SI: 1 inch = 25.4 mm; 1 foot = 304.8 mm. 

1 . Unbalanced fill is the difference in height of the 
exterior and interior finish ground levels. Where an 
interior concrete slab is provided, the unbalanced fill 
shall be measured from the exterior finish ground level to 
the top of the interior concrete slab. 

2. The height between lateral supports shall not exceed 
eight feet 

3. The actual thickness shall not be more than Vi inch 
less than the required nominal thickness specified in the 
table. 

4. Six-inch plain concrete walls shall be formed on both 
sides. 



TABLE 3604.4.1.1 b 

REQUIREMENTS FOR MASONRY OR CONCRETE FOUNDATION WALLS SUBJECTED TO 

NO MORE PRESSURE THAN WOULD BE EXERTED BY BACKFILL HAVING AN 

EQUIVALENT FLUID WEIGHT OF 30 POUNDS PER CUBIC FOOT OR SUBJECTED TO 

UNSTABLE SOIL CONDITIONS 





HEIGHT OF 
UNBALANCED 
FILL IN FEET 


LENGTH OF 

WALL BETWEEN 

SUPPORTING 

MASONRY OR 

CONCRETE 
WALLS IN FEET 


MINIMUM" 

WALL 

THICKNESS IN 

INCHES 3 


REQUIRED REINFORCING 




Horizintal Bar in 

Upper 12 inches of 

wall 


Size and Spacing of 
Vertical Bars 


Hollow Masonry 


4 or less 


unlimited 


8 


not required 


not required 


more than 4 


design required 


design required 


design required 


design required 




4 or less 


unlimited 


8 


noot required 


not required 




more than 4 


lesstha8 


8 


2-No. 3 - 


No. 3 @ 18" o.c. 


Masonry 


8 or less 


8 to 10 


8 


2-No. 4 


No. 3 @ 18" o.c. 


8 or less 


10 to 12 


8 


2-No. 5 


No. 3 @ 18" o.c. 




more than 8 


design required 


design required 


design required 


design required 










3 





For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per cubic foot (pcf) = 0. 1572 kN/m 

1 Backfilling shall not be commenced until after the wall is anchored to the floor or adequate bracing is in place. 

2. Thickness of concrete walls may be six inches, provided reinforcing is placed not less than one inch or more than 
two inches from the face of the wall not against the earth. 

3. The actual thickness shall not be more than Vi inch less than the required thickness specified in the table. 

4. Solid masonry shall include solid brick or concrete units and hollow masonry units with all cells grouted. 



3604.4.1.3.1 Backfill placement: Backfill 
adjacent to the wall shall not be placed until 
the wall has sufficient strength in accordance 



with 780 CMR 3604.2.2 and has been anchored 
to the floor, or has been sufficiently braced to 
prevent damage by the backfill. 



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495 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Exception: Such bracing is not required for 
walls retaining less than three feet (914 
mm) of unbalanced backfill. 

3604.4.2 Design required: Foundation walls subject 
to more lateral pressure than would be exerted by 
backfill consisting of freely draining sands and 
gravel classified as Group I according to the United 
States Soil Classification System or soils having an 
equivalent fluid weight of greater than 30 pounds per 
cubic foot (4.72 kN/m ) shall be designed in 
accordance with accepted engineering practices by 
a registered professional engineer or registered 
architect. 



3604.43 Wood foundation walls: Wood foundation 
walls shall be constructed in accordance with the 
provisions of 780 CMR 3604.4.3.1 through 
3604.4.3.5 and with the details shown in Figures 
3604.3.1b and 3604.3.1c. 

3604.43.1 Wood grade: All load-bearing lumber 
and plywood shall conform to applicable 
standards or grading rules and be identified by a 
grade mark or certificate of inspection issued by 
an approved lumber or plywood grading or 
inspection bureau or agency. Lumber shall 
conform to DOC PS 20-94. 



TABLE 3604.433 

PLYWOOD GRADE AND THICKNESS FOR 

WOOD FOUNDATION CONSTRUCTION 

(30 pcf equivalent-fluid weight soil pressure) 



HEIGHT 


STUD 

SPACING 

(inches) 


FACE GRAIN ACROSS STUDS 


FACE GRAIN PARALLEL TO STUDS 


OF FILL 
(inches) 


Grade 


Minimum 
Thickness 


Identification 
Index 


Grade 


Minimum 
Thickness ' 


Identification Index 




12 


B 


15/32 


32/16 


A 


15/32 


32/16 


24 


B 


15/32 3 


32/16 


16 


B 


15/32 


32/16 


A 


15/32 3 


32/16 




B 


19/32 3 (4,5 ply) 


40/20 




12 


B 


15/32 


32/16 


A 


15/32 


32/16 




B 


15/32 3 (4,5 ply) 


32/16 


36 


B 


19/32 (4, 5 ply) 


40/20 




16 


B 


15/32 3 


32/16 


A 


19/32 


40/20 




B 


23/32 


48/24 




12 


B 


15/32 


32/16 


A 


15/32 3 


32/16 


48 


B 


19/32 3 (4, 5 ply) 


40/20 


16 


B 


19/32 


40/20 


A 


19/32 3 


40/20 




A 


23/32 


48/24 



For SI: 1 inch = 25.4 mm, 1 pound per cubic foot = 0.1572 kN/m . 

1. Plywood shall be of the following minimum grades in accordance with DOC PS1 or DOC PS2: 
(i) DOC PS 1 Plywood grades marked: 

a. Structural I C-D (Exposure 1) 

b. C-D (Exposure 1) 

(ii) DOC PS 2 Plywood grades marked: 

a. Structural I Sheathing (Exposure 1) 

b. Sheathing (Exposure 1) 

(iii) Where a major portion of the wall is exposed above ground and a better appearance is desired, the following 
plywood grades marked Exterior are suitable: 

a. Structural I A-C, Structural I B-C or Structural I C-C (Plugged) in accordance with DOC PS 1 

b. A-C Group 1, B-C Group I, C-C (Plugged) Group 1 or MDO Group 1 in accordance with DOC PS 1 

c. Single Floor in accordance with DOC PS 2 

2. Minimum thickness 1 5/32 inch, except crawl space sheathing may be % inch for face grain across studs 1 6 inches 
on center and maximum two foot depth of unequal fill. 

3. For this fill height, thickness and grade combination, panels which are continuous over less stud spacings require 
blocking 16 inches above the bottom plate. Offset adjacent blocks and fasten through corrosion-resistant nails at each 
end. 



3604.43.2 Stud size: The studs used in 
foundation walls shall be two by six (51 by 
153) members. When spaced 16 inches on 
center, a wood species with an F(, value of not 
less than 1,250 psi (8612 kPa) as listed in 
Table 3605.2.3.1d shall be used. When spaced 



12 inches (305 mm) on center, an F b of not less 
than 875 (6029 kPa) shall be required. 

3604.433 Height of backfill: The height of 
backfill against a foundation wall shall not exceed 
four feet (1219 mm). When the height of fill is 



496 



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12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FOUNDATIONS 



eight-inch (153 mm to 203 mm) layers and 
compacted to consolidate the fill. 

3604.63.5 Final grading: Finished grades shall 
conform to 780 CMR 3604.1.3. 

780 CMR 3604.7 FOUNDATION 
INSULATION 
3604.7.1 Protection of exposed foundation 
insulation: Foundation walls and the edges of slab- 
on-ground floors with exterior applied insulation 
shall have a rigid, opaque and weather-resistant 
protective covering to prevent the degradation of 
thermal performance. The protective covering shall 
cover the exposed insulation and extend to a 
minimum of six inches (153 mm) below grade. 

780 CMR 3604.8 COLUMNS 

3604.8.1 Wood column protection: Wood columns 
shall be protected against decay as set forth in 
780 CMR 3603.22. 

3604.8.2 Steel column protection: All surfaces 
(inside and outside) of steel columns shall be given 
a shop coat of rust-inhibitive paint, except for 
corrosion-resistant steel and steel treated with 
coatings to provide corrosion resistance. 

3604.8.3 Structural requirements: All columns 
shall be restrained to prevent lateral displacement. 
Wood columns shall not be less in nominal size than 
four inches by four inches (102 mm by 102 mm) and 
steel columns shall not be less than three-inch- 
diameter (76 mm) standard pipe or approved 
equivalent. 

780 CMR 3604.9 CRAWL SPACE 
3604.9.1 Ventilation: The space between the bottom 
of the floor joists and the earth under any building 
(except such space as is occupied by a basement or 
cellar) shall be provided with a sufficient number of 
ventilation openings through foundation walls or 
exterior walls. Such ventilation openings shall be 
covered with corrosion-resistant wire mesh, the least 
dimension shall not exceed Vs inch (3.2 mm). The 
minimum net area of ventilation openings shall not 
be less than one square foot for each 150 square feet 
(0.67 m 2 for each 100 m 2 ) of crawl space area. One 
such ventilating opening shall be within three feet 
(914 mm) of each corner of the building, and the 
ventilation openings shall be positioned to provide 
cross ventilation. 

Exceptions: 

1 . The total area of ventilation openings may be 
reduced to 1/1,500 of the under-floor area where 
the ground surface is treated with an approved 



vapor barrier material and one such ventilation 
opening is within three feet (914 mm) of each 
corner of said buildings. The vents may have 
operable louvers. 

2. If design conditions warrants, ventilation 
openings may be omitted on one side. 

3. Under-floor spaces used as supply plenums 
for distribution of heated and cooled air shall 
comply with the requirements of 780 CMR 3621 
as applicable. 

4. Ventilation openings may be omitted when 
continuously operated mechanical ventilation is 
provided at a rate of 1 .0 cfm for each 50 square feet 
( 1.02 L/s for each 10 m 2 ) of crawl space floor area 
and ground surface is covered with an approved 
vapor barrier material. 

3604.9.2 Access: An access crawl hole 1 8 inches by 
24 inches (457 mm by 610 mm) shall be provided to 
the under-floor space. 

3604.93 Removal of debris: The under-floor grade 
shall be cleaned of all vegetation and organic 
material. All wood forms used for placing concrete 
shall be removed before a building is occupied or 
used for any purpose. 

3604.9.4 Finished grade: The finished grade of 
under-floor surface may be located at the bottom of 
the footings; however, where there is evidence that 
the groundwater table can rise to within six inches 
(153 mm) of the finished floor at the building 
perimeter or where there is evidence that the surface 
water does not readily drain from the building site, 
the grade in the under-floor space shall be as high as 
the outside finished grade, unless an approved 
drainage system is provided. 

3604.10 Foundation anchorage: Wall sill plates, 
minimum of two-inch by four-inch members, shall 
be sized and anchored to foundation walls or piers 
and at intermediate intervals as required to resist 
wind uplift. Foundation anchorage shall be provided 
by the installation of anchor bolts or other approved 
anchoring method. Anchor bolts shall be of a 
minimum diameter of Vi inch. The bolts shall be 
embedded in foundations to a depth of not less than 
eight inches (203 mm) of cast-in-place concrete, and 
not less than 15 inches (381 mm) in grouted unit 
masonry. There shall be a minimum of two anchor 
bolts per section of plate and anchor bolts shall be 
placed 12 inches (305 mm) from the end of each 
section of plate, with intermediate bolts spaced a 
maximum of six feet (1829 mm) on center for one- 
and two-story buildings and not more than four feet 
(1219 mm) on center for buildings over two stories 
in height. 



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780 CMR - Sixth Edition 



499 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 
NON-TEXT PAGE 



500 780 CMR - Sixth Edition 2/7/97 (Effective 2/28/97) 



780 CMR 3605 



FLOORS 



780 CMR 3605.1 GENERAL 

3605.1.1 Application: The provisions of 780 CMR 
3605.0 shall control the design and construction of 
the floors for all buildings. The use of materials or 
methods of construction not specified in 780 CMR 
3605.0 accomplishing the purposes intended by 
780 CMR 36 and approved by the building official 
in accordance with 780 CMR 109 shall be accepted 
as complying with 780 CMR 36. 

3605.1.2 Requirements: Floor construction shall be 
capable of supporting all loads imposed according 
to 780 CMR 3603.1 and transmitting the resulting 
loads to other supporting elements. 

780 CMR 36052 FLOOR FRAMING 

3605.2.1 General: Load-bearing dimension lumber 
for joists, beams and girders shall conform to DOC 
PS 20, as listed in Appendix A, and to other 
applicable standards or grading rules and shall be so 
identified by a grade mark or certificate of 
inspection issued by an approved agency. The grade 
mark or certificate shall provide adequate 
information to determine Fb, the allowable stress in 
bending, and E, the modulus of elasticity. 

Exception: Use of Native Lumber shall be 
allowed in accordance with 780 CMR 2303. 0. 

3605.2.1.1 Preservative-treated lumber: 

Preservative-treated dimension lumber shall also 
be identified by the quality mark of an approved 
agency. 

3605.2.1.2 Blocking and subflooring: Blocking 
shall be a minimum of Utility grade lumber. 
Subflooring may be a minimum of Utility Grade 
lumber or No. 4 Common grade boards. 

3605.2.1.3 End jointed lumber: Approved end- 
jointed lumber may be used interchangeably with 
solid-sawn members of the same species and 
grade. 

3605.2.2 Design and construction: Floors of wood 
construction shall be designed and constructed in 
accordance with the provisions of 780 CMR 3605.2 
and Figure 3605. 2. 2. 

3605.2.3 Allowable spans: Joists, girders and floor 
sheathing shall comply with 780 CMR 3605.2.3.1 
through 3605.2.3.3 and 780 CMR 3605.3. 

3605.23.1 Allowable joist spans: The clear span 
of floor joists shall not exceed the values set forth 
in Tables 3605.2.3.1a, 3605.2.3.1b and 
3605.2.3.1c. The modulus of elasticity, E, and the 



actual stress in bending, F b , shown in the tables 
shall not exceed the values specified in Tables 
3605.2.3.U and 3605.2.3.1e listed at the end of 
780 CMR 3605.2. The values for F b , specified as 
"repetitive member use" may be used when floor 
joists are spaced not more than 24 inches (610 
mm) on center. 

3605.2.3.2 Joists under bearing partitions: 

Joists under parallel bearing partitions shall be 
doubled or a beam of adequate size to support the 
load shall be provided. Double joists which are 
separated to permit the installation of piping or 
vents shall be provided with solid blocking spaced 
not more than four feet (1219 mm) on center. 

3605.2.3.3 Allowable girder spans: The 

allowable spans of girders shall not exceed the 
values set forth in Tables 3605.2.3.3a and 
3605.2.3.3b 

3605.2.4 Bearing: The ends of all joists, beams or 
girders shall have not less than IVi inches (38 mm) 
of bearing on wood or metal and not less than three 
inches (76 mm) on masonry except where supported 
on a one-inch-by-four-inch (25 mm by 102 mm) 
ribbon strip and nailed to the adjacent stud or shall 
be supported by the use of approved joist hangers. 

3605.2.4.1 Floor systems: Joists that are framed 
from opposite sides and extend over a bearing 
support shall be tied together by lapping the ends 
of each joist a minimum of three inches (76 mm), 
or with a wood or metal splice plate, or shall be 
secured by overlapping the floor sheathing at 
least three inches (76 mm) beyond the end of 
each floor joist, or by other approved methods. 

3605.2.4.2 Joist framing: Joists framing into the 
side of a wood girder shall be supported by 
approved framing anchors or on ledger strips 
measuring not less than nominal two inches by 
two inches (5 1 mm by 5 1 mm). 

3605.2.5 Lateral restraint at supports: Joists shall 
be supported laterally at the ends by full-depth solid 
blocking not less than two inch (51 mm) nominal 
thickness; or by attachment to a header, band or rim 
joist, or to an adjoining stud; or shall be otherwise 
provided with lateral support to prevent rotation. 
Such lateral support is not required over 
intermediate supports such as center girders or 
bearing walls. 

3605.2.5.1 Bridging: Joists having a depth-to- 
thickness ratio exceeding 6: 1 based on nominal 



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501 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



dimensions shall be supported laterally by solid 
blocking, diagonal bridging (wood or metal), or a 
continuous one-inch-by-three-inch (25 mm by 76 
mm) strip set perpendicularly across the bottom 
of joists and appropriately nailed. Bridging shall 
be installed at intervals not exceeding eight feet 
(2438 mm). 

Exception: Cantilevered joists shall be laterally 
braced at points of support 

3605.2.6 Cutting and notching: It shall be unlawful 
to notch, cut or pierce wood beams, joists, rafters or 
studs in excess of the limitations specified in 
780 CMR 3605.2.6, unless proven safe by structural 
analysis or suitably reinforced to transmit all 
calculated loads. 

3605.2.6.1 Drilling and notches: Notches in the 
top or bottom of joists shall not exceed one-sixth 
of the depth of the joist, shall not be longer than 
one-third the depth of the member and shall not 
be located in the middle third of the span. Notch 
depth at the ends of the member shall not exceed 
one-fourth the joist depth. 



Exceptions: 

1. A notch over the support is permitted to 
extend the full width of the support 

2. Notches on cantilevered portions of the 
member are permitted to extend the full 
length of the cantilever if the strength and 
deflection of the cantilever is calculated based 
on the reduced member section. 

3. The tension side of beams, joists and 
rafters which are four inches or greater in 
nominal thickness, shall not be notched, 
except at ends of members. 

3605.2.7 Holes: Holes drilled, bored or cut into 
joists shall not be closer than two inches (5 1 mm) to 
the top or bottom of the joists, or to any other hole 
located in the joist Where the joist is notched, the 
hole shall not be closer than two inches to the 
notch. The diameter of the hole shall not exceed 
one-third the depth of the joist. 

3605.2.8 Fastening: Floor framing shall be nailed in 
accordance with Table 3606.2.3a. Where posts and 
beam or girder construction is used to support floor 
framing, positive connections shall be provided to 
ensure against uplift and lateral displacement. 



502 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 

FIGURE 3605.2.2 
FLOOR CONSTRUCTION 



BOTTOM 
WALL PLATE 



SUBFLOOR OR 



IS-?. I FLOOR SHEATHING 

/\ I SEE 780 CMR 360 




For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. 



2/7/97 (Effective 2/28/97) 



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503 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 3605.2.3.1a 

ALLOWABLE SPANS FOR FLOOR JOISTS 

40 Lbs. per Sq. Ft. Live Load 

(All rooms except those used for sleeping areas and attic floors.) 
DESIGN CRITERIA: 
Strength- Live load of 40 lbs. per sq. ft. plus dead load of 10 lbs. per sq. ft. determines the fiber stress value 

shown. 
Deflection-For 40 lbs. per sq. ft. live load. Limited to span in inches divided by 360. 
HOW TO USE TABLES: Enter table with span of joists (upper figure in each square). Determine size and 
spacing (first column) based on stress grade (lower figure in each square) and modulus of elasticity (top row) 
of lumber to be used. 



Joist Size 
and Spacing 


MODULUS OF ELASTICITY, "E," IN 1,000,000 PSI 


inches! inchesi 0.4 


0.5 


0.6 


0.7 


0.8 


0.9 i 1.0 1 1.1 1 1.2 1 1.3 1 1.4 I 1.5 ! 1.6 1 17 ! 1.8 ! 1.9 | 2.0 | 2.2 1 2.4 




I 6-9 
12.0 

| 450 


7-3 
520 


7-9 
590 


8-2 
660 


8-6 
720 


8-10 
780 


9-2 
830 


9-6 
890 


9-9 
940 


10-0 
990 


10-3 
1,040 


10-6 
1,090 


10-9 
1,140 


10-11 
1,190 


11-2 
1330 


11-4 
1380 


11-7 

1320 


11-11 
1,410 


12-3 
1,490 


2X6 


16.0 


6-2 

500 


6-7 
580 


7-0 
650 


7-5 
720 


7-9 
790 


8-0 
860 


8-4 
920 


8-7 
980 


8-10 
1,040 


9-1 
1,090 


9-4 
1,150 


9-6 

1300 


9-9 
1350 


9-11 
1,310 


10-2 
1,360 


10-4 
1,410 


10-6 
1,460 


10-10 
1,550 


11-2 
1,640 




24.0 


5-4 

570 


5-9 
660 


6-2 

750 


6-6 
830 


6-9 
900 


7-0 
980 


7-3 
1,050 


7-6 
1,120 


7-9 
1,190 


7-11 
1,250 


8-2 
1,310 


84 
1380 


8-6 
1,440 


8-8 
1300 


8-10 
1350 


9-0 
1,610 


9-2 
1,670 


9-6 
1,780 


9-9 
1,880 




12.0 


8-11 

450 


9-7 
520 


10-2 
590 


10-9 

660 


11-3 
720 


11-8 
780 


12-1 
830 


12-6 
890 


12-10 
940 


13-2 
990 


13-6 
1,040 


13-10 
1,090 


14-2 
1,140 


14-5 
1,190 


14-8 
1330 


15-0 
1380 


15-3 
1,320 


15-9 16-2 
1,410 1,490 


2X8 


16.0 


8-1 

500 


8-9 
580 


9-3 
650 


9-9 

720 


10-2 
790 


10-7 
850 


11-0 
920 


11-4 
980 


11-8 
1,040 


12-0 
1,090 


12-3 
1,150 


12-7 
1300 


12-10 13-1 
1,250 j 1,310 


13-4 
1,360 


13-7 
1,410 


13-10 
1,460 


14-3 
1,550 


14-8 
1,640 




24.0 


7-1 
570 


7-7 
660 


8-1 

750 


8-6 
830 


8-11 
900 


9-3 
980 


9-7 
1,050 


9-11 
1,120 


10-2 
1,190 


10-6 
1,250 


10-9 
1,310 


11-0 
1380 


11-3 1 11-5 
1,440 1 1,500 


11-8 
1,550 


11-11 
1,610 


12-1 
1,670 


12-6 
1,780 


12-10 
1,880 




12.0 


11-4 
450 


12-3 
520 


13-0 
590 


13-8 
660 


14-4 
720 


14-11 
780 


15-5 
830 


15-11 
890 


16-5 
940 


16-10 
990 


17-3 
1,040 


17-8 
1,090 


18-0 
1,140 


18-5 
1,190 


18-9 
1330 


19-1 
1380 


19-5 
1320 


20-1 
1,410 


20-8 
1,490 


2X10 


16.0 


10-4 
500 


11-1 
580 


11-10 
650 


12-5 
720 


13-0 
790 


13-6 
850 


14-0 
920 


14-6 
980 


14-11 
1,040 


15-3 
1,090 


15-8 
1,150 


16-0 
1300 


16-5 
1350 


16-9 
1310 


17-0 
1,360 


174 
1,410 


17-8 
1,460 


18-3 
1,550 


18-9 

1,640 




24.0 


9-0 
570 


9-9 
660 


10-4 
750 


10-10 
830 


11-4 
900 


11-10 
980 


12-3 
1,050 


12-8 
1,120 


13-0 
1,190 


13-4 
1,250 


13-8 
1,310 


14-0 
1,380 


14-4 

1,440 


14-7 
1,500 


14-11 
1350 


15-2 
1,610 


15-5 
1,670 


15-11 
1,780 


16-5 
1,880 




12.0 


13-10 
450 


14-11 
520 


15-10 
590 


16-8 
660 


17-5 
720 


18-1 
780 


18-9 J 19-4 
830 890 


19-1 1 20-6 

940 1 990 


21-0 
1,040 


21-6 
1,090 


21-11 
1,140 


22-5 122-10 

1 

1,190 1330 


23-3 j 23-7 
1380 1320 


24-5 
1,410 


25-1 
1,490 


2X12 


16.0 


12-7 
500 


13-6 
580 


14-4 
650 


15-2 
720 


15-10 
790 


16-5 
860 


17-0 17-7 
920 980 


18-1 

1,040 


18-7 
1,090 


19-1 
1,150 


19-6 
1300 


19-11 
1350 


20-4 
1,310 


20-9 
1360 


21-1 
1,410 


21-6 
1,460 


22-2 
1,550 


22-10 
1,640 




24.0 


11-10 
570 


11-10 
660 


12-7 
750 


13-3 
830 


13-10 
900 


14-4 
980 


14-1 1| 15-4 
1,050 1,120 


15-10 
1,190 


16-3 
1,250 


16-8 
1310 


17-0 
1380 


17-5 
1,440 


17-9 
1,500 


18-1 

1,550 


18-5 
1,610 


18-9 
1,670 


194 
1,780 


19-11 
1,880 



For SI: 1 inch = 25.4 mm, 1 pound per square inch = 6.895 kPa, 1 pound per square foot = 0.0479 kN/m 2 . 
NOTE: The extreme fiber stress in bending, "F to " in pounds per square inch is shown below each span. 



504 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 

TABLE 3605.2.3. Id 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 

These "F t " values are for use where three or more repetitive members are spaced not more than 24 inches apart For 
wider spacing or for single or double member headers or beams, the "F b " values should be reduced 13%. Values for 
surfaced dry or surfaced green lumber apply at 19% maximum moisture content in use. 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "JT." 


MODULUS 
OF ELASTICITY 

"E" 


GRADING 

RULES 
AGENCY 


Snow Loading 1 7-Day Loading 


ASPEN. 


Select Structural 


2"x4" 


1,510 


1,735 


1,885 


1,100,000 


Northeastern 

Lumber 
Manufacturers 
Association 

Northern 
Softwood 
Lumber 
Bureau 

Western 

Wood 

Products 

Association 

(See Footnotes 
land 2) 


No. 1 


1,080 


1,240 


1,350 


1,100,000 


No. 2 


1,035 


1,190 


1.295 


1,000,000 


No. 3 


605 


695 


755 


900,000 


Stud 


600 


690 


750 


900.000 


Construction 


805 


925 


1,005 


900,000 


Standard 


430 


495 


540 


900,000 


Utility 


200 


230 


250 


800,000 


Select Structural 


2"x 6" 


1,310 


1,505 


1,635 


1,100,000 


No. 1 


935 


1,075 


1,170 


1,100,000 


No. 2 


895 


1,030 


1,120 


1,000,000 


No. 3 


525 


600 


655 


900,000 


Stud 


545 


630 


685 


900,000 


Select Structural 


2"x8" 


1,210 


1,390 


1,510 


1,100,000 


No. 1 


865 


990 


1,080 


1,100,000 


No. 2 


830 


950 


1,035 


1,000,000 


No. 3 


485 


555 


605 


900,000 


Select Structural 


2"x 10" 


1,105 


1,275 


1,385 


1,100,000 


No. 1 


790 


910 


990 


1,100,000 


No. 2 


760 


875 


950 


1,000,000 


No. 3 


445 


510 


555 


900,000 


Select Structural 


2"xl2" 


1,005 


1,155 


1,260 


1,100.000 


No. 1 


720 


825 


900 


1,100,000 


No. 2 


690 


795 


865 


1,000,000 


No. 3 


405 


465 


505 


900,000 


BEECH - BIRCH- HICKORY r 


Select Structural 


2" x 4" 


2,500 


2,875 


3,125 


1,700,000 


Northeastern 

Lumber 

Manufacturers 

Association 

(See Footnotes 
land 2) 


No. 1 


1,810 


2,085 


2,265 


1,600,000 


No. 2 


1,725 


1,985 


2,155 


1,500,000 


No. 3 


990 


1,140 


1,240 


1,300,000 


Stud 


980 


1,125 


1,225 


1,300,000 


Construction 


1,325 


1,520 


1,655 


1,400,000 


Standard 


750 


860 


935 


1,300,000 


Utility 


345 


395 


430 


1 .200.000 


Select Structural 


2"x6" 


2,170 


2,495 


2.710 


1,700,000 


No. 1 


1,570 


1,805 


1.960 


1,600,000 


No. 2 


1,495 


1,720 


1,870 


1,500,000 


No. 3 


860 


990 


1.075 


1,300,000 


Stud 


890 


1.025 


1,115 


1300,000 


Select Structural 


2"x8" 


2,000 


2,300 


2,500 


1,700,000 


No. 1 


1,450 


1,665 


1,810 


1,600,000 


No. 2 


1,380 


1,585 


1,725 


1,500,000 


No. 3 


795 


915 


990 


1,300.000 


Select Structural 


2"x 10" 


1,835 


2,110 


2,295 


1,700,000 


No. 1 


1,330 


1,525 


1.660 


1,600,000 


No. 2 


1,265 


1,455 


1,580 


1,500.000 


No. 3 


725 


835 


910 


1.300.000 


Select Structural 


2" x 12" 


1,670 


1,920 


2,085 


1,700,000 


No. 1 


U10 


1,390 


1.510 


1,600,000 


No. 2 


1,150 


1,325 


1.440 


1,500.000 


No. 3 


660 


760 


825 


1,300.000 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



507 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 3605.23.1d - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "Fb" 


MODULUS 
OF ELASTICITY 

"E" 


GRADING 

RULES 
AGENCY 


Snow Loading ] 7-Day Loading 


COTTONWOOD 


Select Structural 


2" x 4" 


1,510 


1,735 


1,885 


1,200,000 


Northern 
Softwood 
Lumber 
Bureau 

(See Footnotes 
I and 2) 


No. 1 


1,080 


1,240 


1,350 


1,200,000 


No. 2 


1,080 


1,240 


1,350 


1,100,000 


No. 3 


605 


695 


755 


1.100,000 


Stud 


600 


690 


750 


1,000,000 


Construction 


805 


925 


1,005 


1.000,000 


Standard 


460 


530 


575 


900,000 


Utilitv 


200 


230 


250 


900,000 


Select Structural 


2"x 6" 


1 310 


1,505 


1,635 


1,200,000 


No. 1 


935 


1,075 


1,170 


1,200,000 


No. 2 


935 


1,075 


1,170 


1,100.000 


No. 3 


525 


600 


655 


1.000.000 


Stud 


545 


630 


685 


1,000.000 


Select Structural 


2" x 8" 


1.210 


1.390 


1.510 


1,200.000 


No. 1 


865 


990 


1,080 


1.200.000 


No. 2 


865 


990 


1.080 


1,100,000 


No. 3 


485 


555 


605 


1.000,000 


Select Structural 


2"x 10" 


1.105 


1.275 


1,385 


1,200,000 


No. 1 


790 


910 


910 


1 ,200.000 


No. 2 


790 


910 


990 


1,100,000 


No. 3 


445 


510 


555 


1,000,000 


Select Structural 


2" x 12" 


1.005 


1.155 


1.260 


1.200,000 


No. 1 


720 


825 


900 


1.200,000 


No. 2 


720 


825 


900 


1,100.000 


No. 3 


405 


465 


505 


1,000.000 


DOUGLAS FIR - LARCH 


Select Structural 


2" x 4" 


2,500 


2.875 


3,125 


1.900.000 


West Coast 

Lumber 

Inspection 

Bureau 

Western Wood 

Products 

Association 

(See Footnotes 1 
and 2) 


No. 1 & Bo- 


1,985 


2,280 


2,480 


1,800.000 


no. 1 


1,725 


1.985 


2,155 


1,700.000 


No. 2 


1.510 


1,735 


1,885 


1,600,000 


No. 3 


865 


990 


1.080 


1,400,000 


Stud 


855 


980 


1,065 


1,400,000 


Construction 


1,150 


1,325 


1,440 


1,500,000 


Standard 


635 


725 


790 


1,400,000 


Utility 


315 


365 


395 


1,300,000 


Select Structural 


2"x 6" 


2,170 


2,495 


2,710 


1,900,000 


No. 1 & Bo- 


1,720 


1,975 


2.150 


1,800.000 


No. 1 


1.495 


1,720 


1,870 


1,700,000 


No. 2 


1.310 


1,505 


1,635 


1,600,000 


No. 3 


750 


860 


935 


1,400,000 


Stud 


775 


895 


970 


1,400.000 


Select Structural 


2" x 8" 


2.000 


2,300 


2,500 


1.900,000 " 


No. & Bc- 


1.585 


1,825 


1,985 


1,800,000 


No. 1 


1.380 


1.585 


1.725 


1,700,000 


No. 2 


1,210 


1.390 


1.510 


1,600,000 


No. 3 


690 


795 


865 


1,400,000 



508 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 

TABLE 3605.2J.ld - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "Ft" 


MODULUS 
OF ELASTICITY 

-E" 


GRADING 
RULES 
AGENCY 


Snow Loading 


7-Day Loading 


Select Structural 


2" x 10" 


1,835 


2,110 


2,295 


1,900,000 




No. 1 & Bo- 


1,455 


1,675 


1,820 


1,800,000 


No. 1 


1,265 


1,455 


1,580 


1,700,000 


No. 2 


1,105 


1,275 


1,385 


1,600,000 


No. 3 


635 


725 


790 


1,400,000 


Select Structural 


2' x 12" 


1,670 


1,920 


2.085 


1,900.000 


No.l&Btr 


1,325 


1,520 


1,655 


1,800,000 


No.l 


1,150 


1,325 


1,440 


1,700,000 


No.2 


1,005 


1,155 


1,260 


1,600,000 


No.3 


575 


660 


720 


1.400,000 


DOUGLAS FIR - LARCH (NORTH) 


Select Structural 


2" x 4" 


2,245 


2,580 


2.805 


1,900.000 


National 
Lumber 
Grades 

Authority 

(See Footnotes 
1 and 2) 


No. l/No.2 


1.425 


1.635 


1.780 


1.600.000 


No.3 


820 


940 


1,025 


1.400.000 


Stud 


820 


945 


1.030 


1,400.000 


Construction 


1.095 


1.255 


1,365 


1.500.000 


Standard 


605 


695 


755 


1.400.000 


Utility 


290 


330 


360 


1,300,000 


Select Structural 


2"x 6" 


1,945 


2.235 


2,430 


1.900,000 


No. l/No.2 


1.235 


1.420 


1,540 


1,600.000 


No.3 


710 


815 


890 


1,400.000 


Stud 


750 


860 


935 


1.400,000 


Select Structural 


2" x 8" 


1.795 


2,065 


2.245 


1.900.000 


No. l/No.2 


1,140 


1.310 


1,425 


1.600.000 


No.3 


655 


755 


820 


1.400,000 


Select Structural 


2"x 10" 


1.645 


1.890 


2,055 


1.900.000 


No. 1/ No.2 


1,045 


1,200 


1,305 


1,600.000 


No.3 


600 


690 


750 


1.400.000 


Select Structural 


2" x 12" 


1.495 


1,720 


1,870 


1.900.000 


No. l/No.2 


950 


1,090 


1,185 


1.600.000 


No.3 


545 


630 


685 


1.400.000 


nmifiT.AS FIR -SOUTH 


Select Structural 


2" x 4" 


2,245 


2.580 


2,805 


1.400.000 


Western 

WoodProducts 

Association 

(See footnotes 1 
and 2) 


No.l 


1,555 


1,785 


1,940 


1,300,000 


No.2 


1.425 


1.635 


1,780 


1,200,000 


No.3 


820 


940 


1.025 


1.100.000 


Stud 


820 


945 


1,030 


1.100,000 


Construction 


1.065 


1.225 


1,330 


1.200,000 


Standard 


605 


695 


755 


1,100.000 


Utility 


290 


330 


360 


1.000.000 - 


Select Structural 


2" x 6" 


1.945 


2.235 


2.430 


1,400.000 


No. 1 


1.345 


1.545 


1.680 


1.300.000 


No.2 


1,235 


1,420 


1.540 


1.200.000 


No.3 


710 


815 


890 


1.100.000 


Stud 


750 


860 


935 


1,100,000 


Select Structural 


2" x 8" 


1.795 


2.065 


2.245 


1.400.000 


No. 1 


1.240 


1.430 


1,555 


1,300,000 


No.2 


1.140 


1.310 


1.425 


1.200.000 


No. 3 


655 


755 


820 


1.100.000 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



508.1 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 3605.23.1d - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "Ft" 


MODULUS 

OF ELASTICITY 

"E" 


GRADING 
RULES 
AGENCY 


Snow Loading 


7-Day Loading 


Select Structural 


2"xl0" 


1.645 


1.890 


2.055 


1.400,000 




No. 1 


1.140 


1.310 


1.425 


1.300,000 


No. 2 


1,045 


1.200 


1.305 


1,200.000 


No. 3 


600 


690 


750 


1.100,000 


Select Structural 


2" x 12" 


1.495 


1.720 


1,870 


1.400,000 


No. 1 


1035 


1,190 


1.295 


1.300,000 


No. 2 


950 


1,090 


1,185 


1.200,000 


No. 3 


545 


630 


685 


1.100.000 


EASTERN SOFTWOODS 






Select Structural 


2" x 4" 


2.155 


2.480 


2.695 


1,200.000 


Northeastern 

Lumber 

Manufacturers 

Association 

Northern 
Softwood 
Lumber 
Bureau 

(See Footnotes 
land 2) 


No. 1 


1.335 


1.535 


1.670 


1,100.000 


No. 2 


990 


1.140 


1.240 


1.100.000 


No. 3 


605 


695 


755 


900,000 


Stud 


570 


655 


710 


900.000 


Construction 


775 


895 


970 


1,000,000 


Standard 


430 


495 


540 


900.000 


Utilitv 


200 


230 


250 


800.000 


Select Structural 


2"x 6" 


1.870 


2.150 


2.335 


1.200.000 


No. 1 


1.160 


1.330 


1,450 


1,100,000 


No. 2 


860 


990 


1.075 


1,100,000 


No. 3 


525 


600 


655 


900,000 


Stud 


520 


595 


645 


900,000 


Select Structural 


2" x 8" 


1.725 


1,985 


2,155 


1.200,000 


No. 1 


1.070 


1.230 


1,335 


1,100,000 


No. 2 


795 


915 


990 


1.100,000 


No. 3 


485 


555 


605 


900.000 


Select Structural 


2"x 10" 


1.580 


1,820 


1,975 


1,200.000 


No. 1 


980 


1,125 


1.225 


1.100,000 


No. 2 


725 


835 


910 


1,100,000 


No. 3 


445 


510 


555 


900,000 


Select Structural 


2" x 12" 


1,440 


1,655 


1,795 


1.200.000 


No. 1 


890 


1,025 


1,115 


1,100.000 


No. 2 


660 


760 


825 


1.100,000 


No. 3 


405 


465 


505 


900,000 



508.2 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 



TABLE 3605.23.1d - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "F»" 


MODULUS 
OF ELASTICITY 

«E" 


GRADING 
RULES 
AGENCY 


Snow Loading 1 7-Day Loading 


EASTERN WHITE PINE 


Select Structural 


2" x 4" 


2.155 


2.480 


2,695 


1,200,000 


Northeastern 

Lumber 

Manufacturers 

Association 

Northern 
Softwood 
Lumber 
Bureau 

(See Footnotes 
land 2) 


No. 1 


1,335 


1,535 


1,670 


1.100,000 


No. 2 


990 


1,140 


1.240 


1,100.000 


No. 3 


605 


695 


755 


900.000 


Stud 


570 


655 


710 


900,000 


Construction 


775 


895 


970 


1.000,000 


Standard 


430 


495 


540 


900.000 


Utility 


200 


230 


250 


800,000 


Select Structural 


2" x 6" 


1.870 


2.150 


2,335 


1 .200.000 


No. 1 


1.160 


1,330 


1.450 


1.100.000 


No. 2 


860 


990 


1,075 


1,100,000 


No. 3 


525 


600 


655 


900,000 


Stud 


520 


595 


645 


900.000 


Select Structural 


2" x 8" 


1,725 


1,985 


2,155 


1,200,000 


No. 1 


1.070 


1.230 


1,335 


1,100,000 


No. 2 


795 


915 


990 


1.100.000 


No. 3 


485 


555 


605 


900.000 


Select Structural 


2"xl0" 


1,580 


1,820 


1,975 


1.200,000 


No. 1 


980 


1.125 


1.225 


1.100.000 


No. 2 


725 


835 


910 


1,100,000 


No. 3 


445 


510 


555 


900,000 


Select Structural 


2" x 12" 


1,440 


1.655 


1.795 


1 .200.000 


No. 1 


890 


1.025 


1.115 


1.100,000 


No. 2 


660 


760 


825 


1.100,000 


No. 3 


405 


465 


505 


900,000 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



509 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 3605.23.1d - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING u Fb" 


MODULUS 
OF ELASTICITY 

"E" 


GRADING 

RULES 
AGENCY 


Snow Loading 1 7-Day Loading 


EASTERN HEMLOCK - TAMARACK 


Select Structural 


2"x4" 


2.155 


2.480 


2.695 


1.200.000 


Northeastern 

Lumber 

Manufacturers 

Association 

Northern 

Softwood 

Lumber Bureau 

(See Footnotes 1 
and 2) 


No. 1 


1.335 


1.535 


1,670 


1.100,000 


No. 2 


990 


1.140 


1,240 


1,100,000 


No. 3 


605 


695 


755 


900,000 


Stud 


570 


655 


710 


900.000 


Construction 


775 


895 


970 


1.000.000 


Standard 


430 


495 


540 


900.000 


Utility 


200 


230 


250 


800,000 


Select Steuctural 


2"x6" 


1.870 


2,150 


2.335 


1.200.000 


No. 1 


1.160 


1.330 


1.450 


1,100.000 


No. 2 


860 


990 


1.075 


1.100.000 


No. 3 


525 


600 


655 


900,000 


Stud 


520 


595 


645 


900,000 


Select Structural 


2" x 8" 


1,725 


1,985 


2.155 


1,200.000 


No. 1 


1.070 


1.230 


1.335 


1.100.000 


No. 2 


795 


915 


990 


1,100.000 


No. 3 


485 


555 


605 


900.000 


Select Structural 


2" x 10" 


1.580 


1,820 


1.975 


1,200,000 


No. 1 


980 


1.125 


1,225 


1.100,000 


No. 2 


725 


835 


910 


1.100.000 


No. 3 


445 


510 


555 


900.000 


Select Structural 


2" x 12" 


1.440 


1,655 


1795 


1.200.000 


No. 1 


890 


1.025 


1115 


1.100.000 


No. 2 


660 


760 


825 


1,100,000 


No. 4 


405 


465 


505 


900.000 


HEM -FIR 


Select Structural 


2"x4" 


2.415 


2.775 


3.020 


1.600.000 




No. 1 & Btr 


1,810 


2.085 


2.265 


1,500.000 


No. 1 


1.640 


1.885 


2.050 


1.500,000 


No. 2 


1.465 


1,685 


1.835 


1,300,000 



510 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 



TABLE 3605.2.3. Id - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 




SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "fj" 


MODULUS 
OF ELASTICITY 

-E" 


GRADING 

RULES 
AGENCY 


Snow Loading 


7-Day Loading 


Select Structural 


2" x 8" 


1.725 


1.985 


2.155 


1,500.000 


National 
Lumber 
Grades 

Authority 

(See Footnotes 
land 2) 


No. 1/No. 2 


1.210 


1,390 


1,510 


1,400,000 


No. 3 


690 


795 


865 


1,200.000 


Select Structural 


2"x 10" 


1,580 


1.820 


1.975 


1.500.000 


No. 1/ No. 2 


1,105 


1.275 


1,385 


1,400,000 


No. 3 


635 


725 


790 


1 .200.000 


Select Structural 


2" x 12" 


1,440 


1,655 


1.795 


1,500.000 


No. 1/ No. 2 


1,005 


1,155 


1.260 


1.400,000 


No. 3 


575 


660 


720 


1.200,000 


No 3. open grain 


540 


620 


670 


900,000 


SPRUCE -PINE - FIR (SOUTH) 


Select Structural 


2" x 4" 


2.245 


2.580 


2,805 


1,300,000 


Northeastern 

Lumber 

Manufacturers 

Association 

Northern 
Softwood 
Lumber 
Bureau 

West Coast 
Lumber 

Inspection 
Bureau 

Western 
Woods 
Products 

Association 

(See Footnotes 
1 and 2) 


No. 1 


1.465 


1.685 


1.835 


1,200,000 


No. 2 


1.295 


1,490 


1,615 


1.100,000 


No. 3 


735 


845 


915 


1,000,000 


Stud 


725 


835 


910 


1,000,000 


Construction 


980 


1.125 


1,220 


1,000.000 


^tmiHarrl 


545 


630 


685 


900,000 


Utility 


260 


300 


335 


900,000 


Select Structural 


2"x6" 


1,945 


2.235 


2,430 


1,300,000 


No. 1 


1.270 


1,460 


1.590 


1,200.000 


No. 2 


1,120 


1.290 


1,400 


1.100,000 


No. 3 


635 


730 


795 


1,000,000 


Stud 


660 


760 


825 


1.000,000 


Select Structural 


2" x 8" 


1,795 


2.065 


2,245 


1,300.000 


No. 1 


1,175 


1,350 


1.465 


1,200,000 


No. 2 


1,035 


1.190 


1,295 


1,100.000 


No. 3 


585 


675 


735 


1,000,000 


Select Structural 


2"x 10" 


1,645 


1,890 


2,055 


1,300,000 


No. 1 


1,075 


1,235 


1,345 


1,200.000 


No. 2 


950 


1,090 


1.185 


1.100,000 


No. 3 


540 


620 


670 


1.000,000 


Select Structural 


2"xl2" 


1.495 


1,720 


1,870 


1,300.000 


No. 1 


980 


1,125 


1,220 


1,200.000 


No. 2 


865 


990 


1,080 


1,100.000 


No. 3 


490 


560 


610 


1,000,000 


.--. WESTERN CEDARS 


Select Structural 


2" x A" 


1,725 


1.985 


2.155 


1.100.000 


West Coast 
Lumber 

Inspection 
Bureau 

Western 

Woods 

Products 

Association 

(See Footnotes 
1 and 2) 


No. 1 


1.250 


1.440 


1,565 


1,000,000 


No. 2 


1,210 


1,390 


1,510 


1,000,000 


No. 3 


690 


795 


865 


900,000 


Stud 


695 


800 


870 


900.000 


Construction 


920 


1,060 


1,150 


900,000 


Standard 


520 


595 


645 


800,000 


Utility 


260 


300 


325 


800,000 


Select Structural 


2"x 6" 


1.495 


1,720 


1.870 


1.100.000 


No. 1 


1,085 


1.245 


1.355 


1.000.000 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



519 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 3605.23. Id - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING u Fb" 


MODULUS 
OF ELASTICITY 

"E" 


GRADING 
RULES 
AGENCY 


Snow Loading 


7-Day Loading 


No. 2 


2" x 6" 


1.045 


1.205 


1.310 


1,000.000 


West Coast 

Lumber 

Inspection 

Bureau 

Western 

Woods 

Products 

Association 

(See Footnotes 
1 and 2) 


No. 3 


600 


690 


750 


900.000 


Srud 


635 


725 


790 


900,000 


Select Structural 


2" x 8" 


1.380 


1,585 


1,725 


1,100,000 


No. 1 


1.000 


1,150 


1,250 


1.000,000 


No. 2 


965 


1,110 


1.210 


1,000,000 


No. 3 


550 


635 


690 


900,000 


Select Structural 


2"x 10" 


1.265 


1.455 


1.580 


1.100,000 


No. 1 


915 


1.055 


1,145 


1,000,000 


No. 2 


885 


1,020 


1,105 


1,000,000 


No. 3 


505 


580 


635 


900,000 


Select Structural 


2" x 12" 


1,150 


1.325 


1,440 


1,100.000 


No. 1 


835 


960 


1,040 


1.000,000 


No. 2 


805 


925 


1.005 


1,000,000 


No. 3 


460 


530 


575 


900,000 


WESTERN WOODS 


Select Structural 


2" x 4" 


1.150 


1,735 


1.885 


1,200,000 


West Coast 
Lumber 

Inspection 
Bureau 

Western 

Woods 

Products 

Association 

(See Footnotes 
1 and 2) 


No. 1 


1,120 


1.290 


1,400 


1.100,000 


No. 2 


1,120 


1.290 


1.400 


1.000,000 


No. 3 


645 


745 


810 


900,000 


Stud 


635 


725 


790 


900,000 


Construction 


835 


960 


1,040 


1,000,000 


Standard 


460 


530 


575 


900.000 


Utility 


230 


265 


290 


800.000 


Select Structural 


2"x 6" 


1.310 


1.505 


1,635 


1.200,000 


No. 1 


970 


1,120 


1.215 


1.100.000 


No. 2 


970 


1,120 


1,215 


1,000.000 


No. 3 


560 


645 


700 


900,000 


Stud 


575 


660 


720 


900,000 


Select Structural 


2" x 8" 


1.210 


1.390 


1,510 


1.200.000 


No. 1 


895 


1.030 


1,120 


1,100,000 


No. 2 


895 


1.030 


1,120 


1,000.000 


No. 3 


520 


595 


645 


900,000 


Select Structural 


2"x 10" 


1,105 


1.275 


1,385 


1.200.000 


No. 1 


820 


945 


1,030 


1,100.000 


No. 2 


820 


945 


1,030 


1,000,000 


No. 3 


475 


545 


595 


900,000 


Select Structural 


2" x 12" 


1.005 


1.155 


1.260 


1,200.000 


No. 1 


750 


860 


935 


1.100.000 


No. 2 


750 


860 


935 


1,000,000 


No. 3 


430 


495 


540 


900,000 


WHITE OAK 


Select Structural 


2" x 4" 


2.070 


2.380 


2,590 


1. 1 00.000 




No. 1 


1,510 


1.735 


1.885 


1,000.000 


No. 2 


1.465 


1,685 


1,835 


900,000 


No. 3 


820 


940 


1.025 


800.000 


Stud 


820 


945 


1.030 


800.000 


Construction 


1 .095 


1.255 


1.365 


900,000 



520 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - FLOORS 



TABLE 3605.2.3.1 d - continued 
DESIGN VALUES FOR DIMENSION LUMBER - VISUAL GRADING 



SPECIES AND GRADE 


SIZE 


NORMAL 
DURATION 


DESIGN VALUE 
IN BENDING "«" 


MODULUS 

OF ELASTICITY 

"E" 


GRADING 

RULES 
AGENCY 


Snow Loading 


7-Day Loading 


Standard 


2"x4" 


605 


695 


755 


800,000 


Northern Lumber 

Manufacturers 

Association 

(See Footnotes 
land 2) 


Utility 


290 


330 


360 


800,000 


Select Structural 


2"x 6" 


1,795 


2.065 


2,245 


1,100,000 


No. 1 


1.310 


1.505 


1,635 


1,000.000 


No. 2 


1,270 


1,460 


1,590 


900,000 


No. 3 


710 


815 


890 


800.000 


Stud 


750 


860 


935 


800,000 


Select Structural 


2" x 8" 


1.655 


1.905 


2,070 


1.100.000 


No. 1 


1,210 


1,390 


1,510 


1,000.000 


No. 2 


1,175 


1,350 


1,465 


900.000 


No. 3 


655 


755 


820 


800.000 


Select Structural 


2"x 10" 


1,520 


1,745 


1.900 


1,100.000 


No. 1 


1,105 


1,275 


1,385 


1.000,000 


No. 2 


1.075 


1.235 


1.345 


900.000 


No. 3 


600 


690 


750 


800,000 


Select Structural 


2"xl2" 


1,380 


1.585 


1.725 


1,100.000 


No. 1 


1.005 


1.155 


1.260 


1.000.000 


No. 2 


980 


1.125 


1,220 


900.000 


No. 3 


545 


630 


685 


800,000 


YELLOW POPLAR 


Select Structural 


2" x 4" 


1.725 


1,985 


2.155 


1,500.000 


Northern 
Softwood 
Lumber 
Bureau 
(See Footnotes 
1 and 2) 


No. 1 


1,250 


1,440 


1,565 


1.400.000 


No. 2 


U10 


1.390 


1,510 


1.300.000 


No. 3 


690 


795 


865 


1.200.000 


Stud 


695 


800 


870 


1.200.000 


Construction 


920 


1,060 


1,150 


1.300.000 


Standard 


520 


595 


645 


1,100.000 


Utility 


230 


265 


290 


1,100.000 


Select Structural 


2"x6" 


1,495 


1,720 


1,870 


1,500,000 


No. 1 


1,085 


1,245 


1,355 


1,400.000 


No. 2 


1,045 . 


1,205 


1,310 


1,300,000 


No. 3 


600 


690 


750 


1,200.000 


Stud 


635 


725 


790 


1,200,000 


Select Structural 


2" x 8" 


1,380 


1.585 


1.725 


1.500.000 


No. 1 


1.000 


1.150 


1,250 


1.400.000 


No. 2 


965 


1,110 


1,210 


1.300.000 


No. 3 


550 


635 


690 


1,200.000 


Select Structural 


2"x 10" 


1,265 


1,455 


1.580 


1.500,000 


No. 1 


915 


1.055 


1,145 


1,400,000 


No. 2 


885 


1,020 


1.105 


1.300,000 


No. 3 


505 


580 


635 


1.200.000 


Select Structural 


2" x 12" 


1,150 


1.325 


1.440 


1.500.000 


No. 1 


835 


960 


1,040 


1.400.000 


No. 2 


805 


925 


1,005 


1.300.000 


No. 3 


460 


530 


575 


1,200.000 



For SI: 1 inch = 25.4 mm, 1 psi = 6.895 kPa. 

1. When dimension lumber is used where moisture content will exceed 19% for an extended time period, F b shall be 
multiplied by 0.85 ifF 4 exceeds 1,150 psi, and £ shall be multiplied by 0.9. 

2. Following is a list of agencies certified by the American Lumber Standards Committee Board of Review (as of 
1991) for inspection and grading of untreated lumber under the rules indicated. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



521 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Rules in Writing Agencies 

National Lumber Grades Authority (NLGA) 

260-1055 W. Hastings Street 

Vancouver, BC V6E 2E9 

Canada 
Northeastern Lumber Manufacturers Association (NELMA) 

272 Tuttle Road, P.O. Box 87A 

Cumberland Center, Maine 04021 
Northern Softwood Lumber Bureau (NSLB) 

272 Tuttle Road, P.O. Box 87A 

Cumberland Center, Maine 04021 
Redwood Inspection Service (RIS) 

405 Enfrente Drive, Suite 200, 

Novato, California 94949 

Southern Pine Inspection Bureau (SPIB) ' 

4709 Scenic Highway, ... 

Pensacola, Florida 32504 
West Coast Lumber Inspection Bureau (WCLIB) 

6980 SW Vames Road, P.O. Box 23 145 

Portland, Oregon 97223 
Western Wood Products Association (WWPA) 
522 S.W. 5th Avenue 
Yeon Building, Portland, OR 97204 

Non-Rules Writing Agencies 

California Lumber Inspection Services 

Pacific Lumber Inspection Bureau, Inc. 

Timber Products Inspection 

Alberta Forest Products Association 

Canadian Lumbermen's Association 

Cariboo Lumber Manufacturers Association 

Central Forest Products Association 

Council of Forest Industries of British Columbia 

Interior Lumber Manufacturers Association 

Macdonald Inspection 

Maritime Lumber Bureau 

Ontario Lumber Manufacturers Association 

Pacific Lumber Inspection Bureau 

Quebec Lumber Manufacturers Association 



Rules for which grading is authorized 

NLGA 



NELMA, NLGA, 
WCLIB, WWPA NLGA 

WSLB, WCLIB, 
WWPA, NLGA 

RIS.WCLB, 
WWPA 



SPIB, NELMA, 
WCLIB, WWPA, NLGA 

WCLIB, RIS, 
WWPA NLGA, SPIB 

WWPA WCLIB, 
NLGA, RIS, SPIB 



RIS, WCLIB, WWPA, NLGA, SPIB 

RIS,WCLB,WWPA, NLGA 

RIS, SPIB, WCLIS, WWPA 

NLGA 

NLGA, NELMA 

NLGA 

NLGA 

NLGA 

NLGA 

NLGAS 

NLGA, NELMA 

NLGA, NELMA 

NLGA 

NLGA, NELMA 



522 



780 CMR - Sixth Edition corrected - 9/19/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - WALL CONSTRUCTION 



inch thick (51 mm) double headers in bearing walls 
shall not exceed the spans set forth in Table 
3606.2.6. The table shall not be used where 
concentrated loads are supported by the headers. 

3606.2.6.1 Single headers: Nominal two-inch 
thick (5 1 mm) single headers shall not be used in 
load-bearing walls. 

3606.2.6.2 Plywood box headers: Plywood box 
headers shall be constructed in accordance with 
Figure 3606.2.6.2 and Table 3606.2.6.2. 



3606.2.63 Non-bearing walls: Load-bearing 
headers are not required in interior or exterior 
nonhealing walls. A single flat two-inch-by-four- 
inch (5 1 mm by 1 02 mm) member may be used as 
a header in interior or exterior nonhealing walls 
for openings up to eight feet (2438 mm) in width 
if the vertical distance to the parallel nailing 
surface above is not more than 24 inches (610 
mm). Cripple spacing shall be the same as 
spacing of studs. 



FIGURE 3606.23a 
TYPICAL WALL, FLOOR AND ROOF FRAMING 




RAFTERS AND 
CEILING JOISTS 
OR APPROVED 
ROOF TRUSS 



SECOND STORY 



FLOOR JOIST- 
SEE DRILLING 
AND NOTCHING 
PROVISIONS 
780 CMR 3605 2.6.1 
-and 3605.2.7 \ 



}l 



c 



•V 3 SPAN 



TOP PLATE- 
SEE DRILLING 
AND NOTCHING 
PROVISIONS 
780 CMR 36067.5.1 



WALL STUD- 
SEE DRILLING AND 

NOTCHING PROVISIONS 
780 CMR 36067.5 

JOIST MAY BE CUT 

OR NOTCHED BETWEEN 

THESE LIMITS, 



^f^) 



FOR BLOCKING AND 
BRIDGING. SEE 
780 CMR 3605.2.5 



~7ff 



BOTTOM 
y PLATE 



V,^BAND JOIST 1 P 
n OR BLOCKING J 7 

tkg — , • h 



LAP JOISTS 3" MIN. 

OR SPLICE— SEE 

780 CMR 3605.2.4 




1 BY 4 RIBBON 
CUT INTO STUD- 
SEE 780 CMR 36067.7 
FOR FIRESTOPPING 



^T\ 



CRAWL SPACE 
DR BASEMENT 
'" FOUNDATION 




INTERMEDIATE 
BEARING WALL 



PLATFORM FRAMING 



MONOLITHIC 

SLAB-ON-GRADE 

FOUNDATION 



BALLOON FRAMING 



NOTE: See Figure 3604.3.1a for other foundation types 



For SI: 1 inch = 25.4 mm. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

FIGURE 3606.2.3b 
FRAMING DETAILS 



CUT PLATE TIED 
WITH 24 GAGE 
STEET ANGLE OR 
EQUIVALENT 

SINGLE OR 

DOUBLE TOP 

PLATE 



STAGGER JOINTS 4" OR 
USE SPUCE PLATES 
SEE 780 CMR 36067.3.3 




FOUNDATION 
-iCRIPPLE 
WALL SEE 
780 CME 
3606.2.8 



ANCHOR BOLTS EMBEDDED 
IN FOUNDATION 6'0" O.C. 
MAXIMUM 




CORNER AND PARTITION POSTS 



/] I" BY 4" DIAGONAL 
BRACELET INTO STUDS 



^£fflfcH= 



Apply approved sheaumig or brace exterior walls with 1" 
by 4" braces let into studs and plates and extending from 
bottom plate to top plate. 
See 780 CMR 3606.2.9. 

For SI: 1 inch = 25.4 mm, 1 foot = 204.8 mm. 



NOTE: A third stud and/or anchor partition 
intersection backing studs may be omitted through 
the use of wood backup cleats, metal drywall clips 
or other approved devices that will serve as an 
adequate backing for the facing materials 



TABLE 3606.2.6 
MAXIMUM SPANS FOR HEADERS LOCATED OVER OPENINGS IN WALLS 



SIZE OF HEADER 



2-2x4 
2-2x6 
2-2x8 
2-2x10 
2-2x12 



HEADERS IN BEARING WALLS 



Supporting Roof Only One Story Above 



Two Stories Above 



HEADERS IN 

WALLS NOT 

SUPPORTING 

FLOORS OR ROOFS 



For SI: 1 inch = 25.4 mm, 1 foot 304.8 mm. 

1 . Nominal four-inch thick single headers may be substituted for double members. 

2. Spans are based on No. 2 Grade Lumber with ten-foot tributary floor and roof loads. 



534 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR 3607 



WALL COVERING 



780 CMR 3607.1 - GENERAL 

3607.1.1 Application: The provisions of 780 CMR 
3607.1 shall control the design and construction of 
the interior and exterior wall covering for all 
buildings. The use of materials or methods of 
construction not specified in 780 CMR 3607.1 
accomplishing the purposes intended by 780 CMR 
36 and approved by the building of in accordance 
with 780 CMR 109 shall be accepted as complying 
with 780 CMR 36. 

3607.1.2 Installation: Products sensitive to 
adverse weather shall not be installed until 
adequate weather protection for the installation is 
provided. Exterior sheathing shall be dry before 
applying exterior cover. 

780 CMR 36072 INTERIOR COVERING 

3607.2.1 General: Interior coverings shall be 
installed in accordance with this section and Tables 
3607.2.1a, 3607.2.1b, 3607.2.1c and 3607.2.3.4. 

Interior finishes and materials shall conform to the 
flame spread and smoke-density requirements of 
780 CMR 3603. 

3607.2.2 Interior plaster: Gypsum plaster or 
Portland cement plastering materials shall conform 
to ASTM C 5, C 28, C 35, C 37, C 59, C 61, C 587, 
C 588, C 631, C847, C 897, C 933, C 1032 and C 
1047, and shall be installed or applied in 
conformance with ASTM C 843, C 844 and C 1063, 
each as listed in Appendix A. Plaster shall not be 
less than three coats when applied over metal lath 
and not less than two coats when applied over other 
bases permitted by 780 CMR 3607.2, except that 
veneer plaster may be applied in one coat not to 
exceed / 16 inch (4.76 mm) thickness, provided the 
total thickness is as set forth in Table 3607.2.1a. 

36072.2.1 Support: Support spacing, spacing of 
fasteners and size of fasteners for gypsum and 
metal lath shall conform with Table 3607.2.3.4. 
Gypsum lath shall be installed at right angles to 
support framing with end joints staggered. 

3607.2.3 Gypsum waliboard: 

3607.2.3.1 Materials: All gypsum waliboard 
materials and accessories shall conform to ASTM 
C 36, C 475, C 514, C 960, C 1002 and C 1047 as 
listed in Appendix A, and shall be installed in 
accordance with the provisions of 780 CMR 
3607.2. Adhesives for the installation of gypsum 
waliboard shall conform to ASTM C 557 as listed 
in Appendix A. 



3607.2.3.2 Wood framing: Wood framing 
supporting gypsum waliboard shall not be less 
than two inches (5 1 mm) nominal thickness in the 
least dimension except that wood furring strips 
not less than one-inch-by-two inch (25 mm by 5 1 
mm) nominal dimension may be used over solid 
backing or framing spaced not more than 24 
inches (610 mm) on center. 

3607.233 Steel framing: Steel framing shall not 
be less than 1 V* inches (32 mm) wide in the least 
dimension. Light-gage nonload-bearing steel 
framing shall comply with ASTM C 645 as listed 
in Appendix A. Load-bearing steel framing and 
steel framing from 0.033 inch to 0. 1 12 inch (0.838 
mm to 2.84 mm) thick shall comply with ASTM 
C 955 as listed in Appendix A. 

3607.2.3.4 Application: Support spacing and 
size and spacing of fasteners shall comply with 
Table 3607.2.3.4. Gypsum waliboard may be 
applied at right angles or parallel to framing 
members. All edges and ends of gypsum 
waliboard shall occur on the framing members, 
except those edges and ends which are 
perpendicular to the framing members. Interior 
gypsum waliboard shall not be installed where it 
is exposed to the weather construction. 

3607.2.3.5 Fastening: Screws for attaching 
gypsum waliboard to wood shall be Type W in 
accordance with ASTM C 1002 as listed in 
Appendix A and shall penetrate the wood not less 
than s /e inch (15.9 mm). Screws for attaching 
gypsum waliboard to light-gage steel shall be 
Type S in accordance with ASTM C 1002 as 
listed in Appendix A and shall penetrate the steel 
not less than V* inch (6.4 mm). Screws for 
attaching gypsum waliboard to steel 0.033 inch to 
0.112 inch (0.838 mm to 2.84 mm) thick shall 
comply with ASTM C 954 as listed in 
Appendix A. 

3607.2.4 Bathtub and shower spaces: Bathtub and 
shower floors and walls shall be finished" with a 
smooth, hard and nonabsorbent surface. Ceramic tile 
surfaces shall be installed in accordance with ANSI 
A 108.1, A108.4, A108.5, A108.6, A108.ll, 
A118.1, A 118.3, A 136.1 and A 137.1 aslistedin 
Appendix A. Such wall surfaces shall extend to a 
height of not less than six feet (1829 mm) above the 
floor. 

3607.2.4.1 Ceramic tile: Gypsum board utilized 
as the base or backer board for adhesive 
application of ceramic tile or other nonabsorbent 



9/19/97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



549 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



finish material shall conform with ASTM C 630 
as listed in Appendix A . Water-resistant gypsum 
backing board shall be permitted to be used on 
ceilings where framing spacing does not exceed 
12 inches (305 mm) on center. All cut or exposed 
edges, including those at wall intersections, shall 
be sealed as recommended by the manufacturer. 

3607.2.5 Other finishes: Wood veneer or 
hardboard paneling not less than %-inch (6.4 mm) 
nominal thickness ['^-inch (5.2 mm) actual] shall 
conform to HPMA (ANSI) HP for wood veneer and 
AHA (ANSI) A135.5 for hardboard paneling. These 
finishes may be installed directly to studs with a 
maximum 1 6 inches on center spacing: wood veneer 
or hardboard paneling less than % inch nominal 
thickness must not have less than % inch gypsum 
board backer, unless the qualifying tests were made 
with the material suspended from noncombustible 
backing, and stud spacing may not exceed 16 inches 
on center. 

3607.2.6 Wood shakes and shingles: Wood shakes 
and shingles shall conform to CSSB "Grading Rules 
for Wood Shakes and Shingles" as listed in 
Appendix A. 

TABLE 3607.2.1a 
THICKNESS OF PLASTER 



PLASTER BASE 


FINISHED THICKNESS OF 

PLASTER FROM FACE TO 

LATH, MASONRY, CONCRETE 




Gypsum Plaster 


Portland Cement 
Mortar 


Expanded metal lath 


s /s" minimum 


5/ » • ' 
V8 minimum 


Wire lath 


5/ „ ■ I 

V8 minimum 


%" minimum 
(interior) 

7 A" minimum 
(exterior)" 


Gypsum lath 


Vi" minimum 




Masonry walls 


'A" minimum 


!4" minimum 


Monolithic concrete 
walls ' 


5 /e" maximum 


Vs" maximum 


Monolithic concrete 
ceilings ' 


%" maximum 


Vi" maximum 


Gypsunv veneer 
base 


l, „ . . 1 
/, 6 minimum 





For SI: 1 inch = 25.4 mm 

1 . When measured from back plane of expanded metal 
lath, exclusive of ribs, or self -furring lath, plaster 
thickness shall be % inch minimum. 

2. When measured from face of support or backing. 

3. Because masonry and concrete surfaces may vary in 
plane, thickness of plaster need not be uniform. 

4. When applied over a liquid bonding agent, finish coat 
may be applied directly to concrete surface. 

5. Approved acoustical plaster may be applied directly 
to concrete or over base coat plaster, beyond the 
maximum plaster thickness shown. 

6. Attachment shall be in accordance with Table 
3607.2.3.4. 

TABLE 3607.2.1b 
GYPSUM PLASTER PROPORTIONS 



NUMBER 


COAT 


PLASTER 

BASE OR 

LATH 


MAXIMUM 

VOLUME 
AGGREGATE PER 
100 POUNDS NEAT 

PLASTER 2 

(cubic feet) 




Damp 
Loose 
Sand 


Perlite or 
Vermiculite 


Two-coat 


3ase coat 


Gypsum lath 


2'/: 


2 


work 


Base coat 


Masonry 


3 


3 


Three-coat 


-irst coat 


Lath 


2 4 


■> 


work 


Second coat 


Lath 


„4 


2> 




-irst and 

second 

coats 


Masonry 


3 


3 



For SI: 1 inch = 25.4 mm, 1 cubic foot = 0.0283 m J , 1 
pound = 0.454 kg. 

1 . Wood-fibered gypsum plaster may be mixed in the 
proportions of 1 00 pounds of gypsum to not more than 
one cubic foot of sand where applied on masonry or 
concrete. 

2. When determining the amount of aggregate in set 
plaster, a tolerance of 1 0% shall be allowed. 

3. Combinations of sand and lightweight aggregate may 
be used, provided the volume and weight relationship of 
the combined aggregate to gypsum plaster is maintained. 

4. If used for both first and second coats, the volume of 
aggregate may be 2V2 cubic feet. 

5. Where plaster is one inch or more in total thickness, 
the proportions for the second coat may be increased to 
three cubic feet. 



TABLE 3607.2.1c 
PORTLAND CEMENT PLASTER 



MAXIMUM VOLUME AGGREGATE PER VOLUME CEMENTITIOUS MATERIAL 1 


MINIMUM 
PERIOD 
MOIST 
COATS 






Portland Cement 
Plaster Maximum 
Volume Aggregate 
per Volume Cement 


Portland Cement-lime Plaster 


Approximate 

4 
Minimum Thickness 

Curing 


MINIMUM 


COAT 


Maximum Volume 

Lime per Volume 

Cement 


Maximum Volume 
Sand per Volume 
Cement and Lime 


BETWEEN 


First 


4 


V* 


4 


% 5 


48 6 Hours 


48' Hours 


Second 


5 


3 /< 


5 


First and Second coats 


48 Hours 


7 Days" 


Finished 


_y 




,s 


Vs 


- 


!s 



For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg 



550 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - WALL COVERING 

1 . When determining the amount of aggregate in set plaster, a tolerance of 1 0% maybe allowed. 

2. From ten to 20 pounds of dry hydrated lime (or an equivalent amount of lime putty) may be added as a plasticizing 
agent to each sack of Type I and Type U standard portland cement in base coat plaster. 

3. No additions of plasticizing agents shall be made. 

4. See Table 3607.2.1a 

5. Measured from face of support or backing to crest of scored plaster. 

6. 24 hour minimum period for moist curing of interior portland cement plaster. 

7. 24 hour minimi im interval between coats of interior portland cement plaster. 

S. Finish coat plaster may be applied to interior portland cement base coat after a 48-hour period. 

9. For finish coat, plaster up to an equal part of dry hydrated lime by weight (or an equivalent volume of lime putty) 

may be added to Type L Type II and Type HI standard portland cement 

TABLE 3607.2.3.4 
APPLICATION AND MINIMUM THICKNESS OF GYPSUM WALLBOARD 



THICKNESS 
OF GYPSUM 
WALLBOARD 

Cinch) 



PLANE OF 

FRAMING 
SURFACE 



LONG 
DIMENSION OF 

GYPSUM 
WALLBOARD 

SHEETS IN 

RELATION TO 

DIRECTION OF 

FRAMING 

MEMBERS 



MAXIMUM 

SPACING OF 

FRAMING 

MEMBERS 

[center-to-center 
in inches) 



MAXIMUM SPACING 

OF FASTENERS 

(center-to-center, in 

inches) 



NAILS 
TO WOOD 



Fastening required without adhesive application. 



% 


4 
Horizontal 


Perpendicular 


16 


7 


12 


No. 13 gage 1%- long, 19 / M " 
head; 0.098" diameter. 1%" long, 
annular-ringed; 4d cooler nail 


Vertical 


Either direction 


16 


S 


12 




Horizontal 


Either direction 


16 


7 


12 


No. 13 gage 1%" long, '%," 


Vi 


Horizontal 3 


Perpendicular 


24 


7 


12 


head; 0.098"diameter, VA" long. 




Vertical 


Either direction 


24 


8 


12 


annular-ringed; 5d cooler nail 




Horizontal 


Either direction 


16 


7 


12 


No. 13 gage l s /a' long, '%." 


% 


Horizontal 


Perpendicular 


24 


7 


12 


head; 0.098" diameter, 1%" long. 




Vertical 


Either direction 


24 


8 


12 


annular-ringed; 6d cooler nail 



With adhesive application 



% 


Horizontal 


Perpendicular 


16 


16 


16 


Same as above for %' 


Vertical 


Either direction 


16 


16 


24 




Horizontal 


Either direction 3 


16 


16 


16 


As required for Vz" and %" 
gypsum wallboard, see above 


ViorS/e 


Perpendicular 


... 24 


12 


16 




Vertical 


Either direction 


■ 24 


24 


24 


2% layers 


Horizontal 


Perpendicular 


24 


16 


16 


Base ply nailed as required for 
14" gypsum wallboard and face 
plv placed with adhesive 


Vertical 


Either direction 


24 


24 


24 



For SI: 1 inch = 25.4 mm ..'..... 

1. Where the metal framing has a clinching design formed to receive the nails by two edges of metal, the nails shall 
not be less than % inch longer than the wallboard thickness and shall have ringed shanks. Where the metal framing 
has a nailing groove formed to receive the nails, the nails shall have barbed shanks or be 5d, 13!4 gage, l 5 /s inches 
long, / a -inch head for '/i-inch gypsum wallboard; 6d, 13 gage, 1% inches long, 15 / M -inch head for %-inch gypsum 
wallboard. 

2. Two nails spaced not less than two inches apart, or more than 2Yz inches apart may be used where the pairs are 
spaced 12 inches on center except around the perimeter of the boards. 

3. %-inch single-ply gypsum board shall not be installed if water-based textured finish is applied or to support 
insulation above a ceiling. On horizontal applications to receive a water-based texture material, either hand or spray 
applied, gypsum board shall be applied perpendicular to framing and board thickness increased from % inch to 'A inch 
for 16-inch o.c. framing, and from Vz inch to s /s inch for 24-inch ox. framing. 

4. Horizontal refers to applications such as ceilings. Vertical refers to applications such as walls. 



3607.2.6.1 Attachment: Nails, staples or glue are 
permitted for use in attaching shakes or -shingles 
to the wall, and the shakes or shingles shall be 
permitted to be attached directly to the surface 
provided the fasteners are appropriate for the type 
of wall surface material. When nails or staples are 



used, two fasteners shall be provided and shall be 
placed so that they are covered by the course 
above. 

3607.2.6.2 Furring strips: Where furring strips 
are used, they shall be one inch by two inches or 
one inch by three inches (25 mm by 51 mm or 25 



9/19/97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



551 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



mm by 76 mm), spaced a distance on center equal 
to the shake or shingle exposure, and shall be 
attached to the wall by nailing through other wall 
material into the studs of the interior spaces. 

3607.2.6.3 Bottom course: The bottom course 
shall be doubled. 

780 CMR 36073 EXTERIOR COVERING 
3607.3.1 General: All exterior walls shall be 
covered with approved materials designed and 
installed to provide a barrier against the weather and 
insects to enable environmental control of the 
interior spaces. The exterior coverings in 780 CMR 
3607.0 shall be installed in the specified manner 
unless otherwise approved. 

36073.2 Weather-resistant sheathing paper: 

Asphalt-saturated felt, free from holes and breaks 
and weighing not less than 1 4 pounds per 1 00 square 
feet (0.683 kg/m 2 ) or other approved weather- 
resistant material shall be applied over studs or 
sheathing of all exterior walls as required by Table 
3607.3.4. Such felt or material shall be applied 
horizontally, with the upper layer lapped over the 
lower layer not less than two inches (51 mm). 
Where joints occur, felt shall be lapped not less than 
six inches (153 mm). 

36073.2.1 Felt or material: Such felt or material 
may be omitted. 

1 . In detached accessory buildings. 

2. Under panel siding with shiplap joints or 
battens. 

3. Under exterior wall finish materials as 
permitted in Table 3607.3.4. 

4. Under paperbacked stucco lath. 

5. Over water-repellent sheathing materials. 

360733 Wood, plywood and wood structural 
panel siding: Joints in wood, plywood or wood 
structural panel siding shall be made as follows 
unless otherwise approved. Vertical joints in panel 
siding shall occur over framing members, unless 
wood or wood structural panel sheathing is used, and 
shall be shiplapped or covered with a batten. 
Horizontal joints in panel siding shall be lapped a 
minimum of one inch (25 mm) or shall be flashed 
with Z-flashing. 

360733.1 Horizontal siding: Horizontal siding 
shall be lapped a minimum of one inch (25 mm), 
or Vi inch (12.7 mm) if rabbeted, and shall have 
the ends caulked, covered with a batten, or sealed 
and installed over a strip of flashing. 

36073.4 Attachments: Unless specified otherwise, 
all wall coverings shall be securely fastened in 
accordance with Table 3607.3.4 or with other 
approved aluminum, stainless steel, zinc-coated, or 
other approved corrosion-resistive fasteners. 



36073.5 Wood shakes and shingles: Wood shakes 
and shingles shall conform to CSSB "Grading Rules 
for Wood Shakes and Shingles." 

36073.5.1 Application: Wood shakes or shingles 
shall be applied either single-course or double- 
course over nominal '/2-inch (12.7 mm) wood- 
based sheathing or to furring strips over '/4-inch 
(12.7 mm) nominal non-wood sheathing. A 
weather-resistant permeable membrane shall be 
provided over the sheathing, with horizontal 
overlaps in the membrane of not less than two 
inches (5 1 mm) and vertical overlaps of not less 
than six inches (153 mm). Where furring strips are 
used, they shall be one inch by three inches or one 
inch by four inches (25 mm by 76 mm or 25 mm 
by 102 mm) and shall be fastened horizontally to 
the studs with 7d or 8d box nails and shall be 
spaced a distance on center equal to the actual 
weather exposure of the shakes or shingles, not to 
exceed the maximum exposure specified in Table 
3607.3.5.2. The spacing between adjacent 
shingles to allow for expansion shall not exceed 
Va inch (6.4 mm), and between adjacent shakes, 
shall not exceed l /z inch (12.7 mm). The offset 
spacing between joints in adjacent courses a 
minimum of 1 V2 inches (38 mm). 

36073.5.2 Weather exposure: The maximum 
weather exposure for shakes and shingles shall 
not exceed that specified in Table 3607.3.5.2. 

36073.53 Attachment: Each shake or shingle 
shall be held in place by two hot-dipped zinc- 
coated, stainless steel, or aluminum nails or 
staples. The fasteners shall be long enough to 
penetrate the sheathing or furring strips by a 
minimum of V2 inch (12.7 mm) and shall not be 
overdriven. 

36073.53.1 Staple attachment: Staples shall 
not be less than 16 gage and shall have a crown 
width of not less than 7 / 16 inch (1 1 mm), and 
the crown of the staples shall be parallel with 
the butt of the shake or shingle. In single- 
course application, the fasteners shall be 
concealed by the course above and shall be 
driven approximately one inch (25 mm) above 
the butt line of the succeeding course and % 
inch (19 mm) from the edge. In double-course 
applications, the exposed shake or shingle shall 
be face-nailed with two casing nails, driven 
approximately two inches (5 1 mm) above the 
butt line and % inch (19 mm) from each edge. 
Staples shall not be permitted for face-nailing. 
With shingles wider than eight inches (203 
mm), two additional nails shall be required and 
shall be nailed approximately one inch (25 
mm) apart near the center of the shingle. 

36073.6 Exterior lath: All lath and lath 
attachments shall be of corrosion-resistant materials. 



552 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - WALL COVERING 



Expanded metal or woven wire lath shall be attached 
with 1V2 inch (38 mm) long, 1 1 gage nails having a 
7 /i5-inch (1 1 mm) head, or Ve inch (22 mm) long, 16 
gage staples, spaced at no more than six inches (153 
mm), or as otherwise approved. 

36073.7 Masonry veneer, general: All masonry 
veneer shall be installed in accordance with 
780 CMR 3607.3.7, Table 3607.3.4 and Figure 
3607.3.7. Exterior masonry veneer shall not be 
laterally supported by wood frame at any point more 
than 35 feet (7620 mm) above the adjacent ground 
elevation. 
Exceptions: 

1 . Veneers used as interior wall finishes may be 
supported on wood floors which are designed to 
support the loads imposed. 

2. Exterior masonry veneers with an installed 
weight of 40 pounds per square foot (195 kg/m ) 
or less may be supported on wood construction. 
When the masonry veneer is supported by wood 
construction that adjoins the masonry veneer 
supported by the foundation, there shall be a 
movement joint between the veneer supported by 
the wood construction and the foundation. The 
wood construction supporting the masonry veneer 
shall be designed to limit deflection to / 600 of the 



span for the supporting members. 

3607.3.7.1 Lintels: Masonry veneer shall not 
support any vertical load other than the dead load 
of the veneer above. Veneer above openings shall 
be supported on lintels of noncombustible 
materials and the allowable span shall not exceed 
the values set forth in Table 3607.3.7.1. The 
lintels shall have a length of bearing of not less 
than four inches (102 mm). 

36073.7.2 Attachment: Masonry veneer shall be 
attached to the supporting wall with corrosion- 
resistant metal ties. 

36073.7.2.1 Size and spacing: Veneer ties, if 
strand wire, shall not be less in thickness than 
No. 9 U.S. gage wire and shall have a hood 
embedded in the mortar joint, or if sheet metal, 
not less than No. 22 U.S. gage by Ve inch (22 
mm) corrugated. Each tie shall be spaced not 
more than 24 inches (610 mm) on center 
horizontally and shall support not more than 
3Vi square feet (0.302 m 2 ) of wall area. 

Exception: In wind areas of more than 30 
pounds per square foot (1.44 kN/m 2 ), each 
tie shall support not more than two square 
feet (0.186 m 2 ) of wall area. 



2/7/97 (Effective 2/28/97) 



780 CMR - Sixth Edition 



553 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

TABLE 36073.4 
WEATHER-RESISTANT SIDING ATTACHMENT AND MINIMUM THICKNESS 







NOMINAL 

rmcNESs 

(inches) 


JOINT 
TREATMENT 


SHEATHING 

PAPER 
REQUIRED 


TYPE OF SUPPORTS FOR THE SIDING MATERIAL AND 
FASTENERS^' 


SIDING 
MATERIAL 


Wood, or 
Wood 

structural 
Panel 

Sheathing 


Fiberboard 

Sheathing into 

Stud 


Gypsum 
Sheathing 
into Stud 


Direct to 
Studs 


Number or 
Spacing of 
Fasteners 




Without 
nsulation 


0.019 6 


Lap 


No 


0.120 nail 
l'/4" long 


0.120 nail 
2" long 


0.120 nail 
2" long 


Not allowed 




Horizontal 
aluminum 


0.024 


Lap 


No 


0.120 nail 
114" long 


0.120 nail 
2" long 


0.120 nail 
2" long 


Not allowed 


Same as stud 
spacing 




With 

nsulation 


0.019 


Lap 


No 


0.120 nail 
1 14 "long 


0.120 nail 
2'4" long 


0.120 nail 
2 14" long 


0120 nail 
1 Vi" long 




Brick veneer 

Concrete masonry 

veneer 


2 

2 


780 CMR 
3607.3 


Yes (13) 


See 780 CMR 3607.3 and Figure 3607.3.7 8 


Hardboard 
Board and batten- 
vertical 


X 


(7) 


(7) 


0.099 nail 
2" long 


0.099 nail 
2/j" long 


0.099 nail 
2" long 


0.099 nail 
1%" long 


6" panel edges 
8" inter, sup. 


Hardboard 
Lap-siding-horizonta! 


X 


(7) 


(7) 


0.099 nail 
2" long 


0.099 nail 
2Vi" long 


0.099 nail 
2'/." long 


0.099 nail 
2" long 


Same as stud 

spacing 2 per 

bearing 


9 
Steel 


29 ga. 


Lap 


No 


0.113 nail lV*" 
Staple l 3 /«" 


0.113nail2 3 /4" 
Staple 2/2" 


0.1 13 nail 
214" Staple 

iVt" 


Not allowed 


Same as stud 
spacing 


Stone veneer 


2 


780 CMR 
3607.3 


Yes 


See 780 CMR 3607.3 and Figure 3607.3.7 


Particalboard panels 


%-!4 


(7) 


(7) 


6d box nail 


6d box nail 


6d box nail 


6d box nail, 
%not 
allowed 


6" panel edges 
12" inter, sup. 




% 


(7) 


(7) 


6d box nail 


8d box nail 


8d box nail 


6d box nail 




Plywood panel 
(exterior grade) 


% 


(7) 


(7) 


0.099jiail2" 
Staple 1%" 


0.113 nail 214" 
Staple 2%" 


0.099 nail 2" 
Staple 2" 


0.099 nail 2" 
Staple 1%" 


6" on edges 1 2" 
inter, sup. 


14 
Vinyl Siding 


0.035 


Lap 


No 


0.120 nail IV4" 
Staple \V*" 


0.120 nail 2" 
Staple 214" 


0.120 nail 2" 
Staple 214" 


Not allowed 


Same as stud 
spacing 


Wood" 

Rustic drop 

Shiplap 

Bevel 
Butt tip 


% Minimum 
'% 2 Average 

I;.. 

he. 


Lap 

Lap 
Lap 


No 

No 
No 


Fastener penetration into stud - 1 " 


0.113 nail 

214" Staple 

2" 


Face nailig up to 
6" widths, 1 nail 
per bearing: 8" 
widrhs and over, 
2 nails per 
bearing 



For SI: 1 inch = 25.4 mm. 

1. Based on stud spacing of 16 inches o.c. Where studs are spaces 24 inches, siding may be applied to sheathing 
approved for that spacing. 

2. Nail is a general description and may be T-head, modified round head, or round head with smooth or deformed 
shanks. 

3. Staples shall have a minimum crown width of 7 / 16 -inch O.D. and be manufactured of minimum No. 16 gage wire. 

4. Nails or staples must be aluminum, galvanized, or rust-preventive coated and shall be driven into the studs for 
fiberboard or gypsum backing. 

5. Aluminum nails shall be used to attach aluminum siding. 

6 Aluminum (0.019 inch) may be unbacked only when the maximum panel width is ten inches and the maximum flat 
area is eight inches. The tolerance for aluminum siding shall be ±0.002 inch of the nominal dimension. 

7. If boards are applied over sheathing or weather resistant membrane, joints need not be treated. Otherwise, vertical 
joints must occur at studs and be covered with battens or be lapped. 

8. All attachments shall be coated with a corrosion-resistive coating. 

9. Shall be of approved type. 

10. %-inch plywood may be applied directly to studs spaced 16 inches on center. '.4-inch plywood may be applied 
directly to studs spaced at 24 inches on center. 

11. Woodboard sidings applied vertically shall be nailed to horizontal nailing strips or blocking set 24 inches o.c. 
Nails shall penetrate 1 14 inches into studs, studs and wood sheathing combined, or blocking. A weather-resistant 
membrane shall be installed weatherboard fashion under the vertical siding unless the siding boards are lapped or 
battens are used. 

12. Hardboard siding shall comply with AHA A135.6 

13. For masonry veneer, a weather-resistant membrane or building paper is not required over water-repellent sheathing 
materials when a one-inch air space is provided between the veneer and the sheathing. When the one-inch space is 



554 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - WALL COVERING 

filled with mortar, a weather-resistant membrane or building paper is required over studs or sheathing. 
14. Vinyl siding shall comply with ASTM D 3679. 



TABLE 3607.3.5.2 

MAXIMUM WEATHER EXPOSURE FOR 

WOOD SHAKES AND SHINGLES ON 

EXTERIOR WALLS 

(Dimensions are in 



LENGTH 


EXPOSURE FOR 
SINGLE COURSE 


EXPOSURE FOR 
DOUBLE COURSE 


SHINGLES 1 
16 
18 

24 


VA 

m 

HVi 


I2 3 
16 


SHAKES 1 
18 
24 


8'/2 

ll'/i 


14 
18 



For SI: 1 inch = 25.4 mm 

1. Dimensions given are for No. 1 Grade. 

2. A maximum ten-inch exposure is permitted for No. 2 
Grade. 

3. A maximum 1 1-inch exposure is permitted for No. 2 
Grade. 

36073.7.2.2 Paper backing required: When 
applied over stud construction, the studs shall 
be spaced a maximum of 24 inches (610 mm) 
on center and approved paper shall first be 
applied over the sheathing or wires between 
the studs, except as otherwise provided in 
780 CMR 3607.3.2 and mortar shall be slushed 
into the one-inch (25 mm) space between 
facing and paper. 
Exception: As an alternate, an air space of 
at least one inch (25 mm) may be maintained 
between the backing and the veneer, in 
which case a weather-resistant membrane or 
felt sheathing paper or approved water- 
repellent sheathing shall be applied over the 
studs. 
3607.3.7.2.3 Veneer grouting: In lieu of such 
wire ties, an approved method of grouting the 



veneer to a paperbacked reinforcement 
attached directly to the studs may be used. 

3607.3.7.3 Flashing: Flashing shall be located 
beneath the first course of masonry above finished 
ground level above the foundation wall or slab, 
and at other points of support, including 
structural floors, shelf angles and lintels when 
masonry veneers are designed in accordance with 
780 CMR 3607.3. 7. See 780 CMR 3607.3. 8 for 
additional requirements. 

3607.3.7.4 Weepholes: Weepholes shall be 
provided in the outside of masonry walls at a 
maximum spacing of 33 inches (838 mm) on 
center. Weepholes shall not be less than / I6 inch 
(4.8 mm) in diameter. Weepholes shall be located 
immediately above the flashing. 

36073.8 Flashing: Approved corrosion-resistive 
flashing shall be provided at top and sides of all 
exterior window and door openings in such a 
manner as to be leak-proof, except that self-flashing 
windows having a continuous lap of not less than 
1% inches (28 mm) over the sheathing material 
around the perimeter of the opening, including 
comers, do not require additional flashing; jamb 
flashing may also be omitted when specifically 
approved by the building official. Similar flashings 
shall be installed at the intersection of chimneys or 
other masonry construction with frame or stucco 
walls, with projecting lips on both sides under stucco 
copings; under and at the ends of masonry, wood or 
metal copings and sills; continuously above all 
projecting wood trim; where exterior porches, decks 
or stairs attach to a wall or floor assembly of wood- 
frame construction; at wall and roof intersections. 



9/19'97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



555 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



FIGURE 36073.7 
MASONRY VENEERED WALL DETAIL 




BULDU3PAPEH 
OR APPROVED 
WATER REPEUBn 
SHEATWCCVER 
STUDASDESCHEED 
IN 780 CMR 3607.3 2 



r Am SPACE OR 
1-MORTABED SPACE 
AS DESCRIBED N 
780 CMR 3607J.72J 



- FLASHNG AND WEEP HDLES' 



For SI: 1 inch = 25.4 mm. 

1. Location of flashing and weepholes as described in 780 CMR 3607.3.7.3 and 3607.3.7.4. 

TABLE 3607.3.7.1 
ALLOWABLE SPANS FOR LINTELS SUPPORTING MASONRY VENEER 



SIZE OF STEEL 
ANGLE 3 


NO STORY ABOVE 


ONE STORY ABOVE 


TWO STORIES ABOVE 


NO OF Vi" OR 

EQUIVALENT 

REINFORCING 

BARS 


3 x 3 x % 


6-0" 


3-6" 


3'-0" 


1 


4 x 3 x Va 


8' - 0" 


5'-0" 


3'-0" 


1 


6x3'/2x'/4 


14' -0" 


8'-0" 


3-6" 


2 


2-6x3'/ 2X '/4 


20' - 0" 


ll'-O" 


5'-0" 


4 



For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. 

1 . Long leg of the angle shall be placed in a vertical position. 

2. Depth of reinforced lintels shall not be less than eight inches and all cells of hollow masonry lintels shall be grouted 
and solid. Reinforcing bars shall extend not less than eight inches into the support. 

3. Steel members indicated are adequate typical examples; other steel members meeting structural design requirements 
may be used. 



556 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR 3608 



ROOF-CEILING CONSTRUCTION 



3608.1 GENERAL 
3608.1.1 Application: The provisions of 780 CMR 
3608.1 shall control the design and construction of 
the roof-ceiling system for all buildings. The use of 
materials or methods of construction not specified in 
780 CMR 3608.1 accomplishing the purposes 
intended with 780 CMR 36 and approved by the 
building official in accordance with 780 CMR 36 
and approved by the building official in accordance 
with 780 CMR 109 shall be accepted as complying 
with 780 CMR 36. 

3608.L2 Requirements: Roof-ceiling construction 
shall be capable of supporting all loads imposed 
according to 780 CMR 3603.1 and shall transmit the 
resulting loads to supporting structural elements. 

3608.1.3 Roof drainage: In areas where expansive 
or collapsible soils are known to exist or where 
required by city or town ordinance or by-law, all 
dwellings shall have a controlled method of water 
disposal from roofs that will collect and discharge 
all roof drainage to the ground surface at least five 
feet (1524 mm) from foundation walls or to an 
approved drainage system. 



3608.2.2 Design and construction: Roof-ceilings 
of wood construction shall be designed and 
constructed in accordance with the provisions of 
780 CMR 3608.2 or with the AFPA NDS-1991 
"National Design Specification for Wood 
Construction," the CWC-1987 "Canadian Dimension 
Lumber Data Book," the WWPA- 1992 "Western 
Lumber Span Tables for Floor and Ceiling Joists and 
Roof Rafters," or the "Southern Pine Maximum 
Spans for Joists and Rafters," each as listed in 
Appendix A. Roof-ceilings shall be constructed in 
accordance with Figures 3606.4.10a, 3606.4.10b, 
3606.4.10c and 3608.2.4.1 and nailed in accordance 
with Table 3606.2.3a. 

3608.2.2.1 Cathedral ceilings: When ceiling 
joists and rafter ties are omitted and the rafters are 
used to create a cathedral ceiling, rafter ends shall 
be supported on bearing walls, headers or ridge 
beams. Rafters shall be attached to supporting 
members in accordance with Table 3606.2.3a. 
Ridge beams shall be capable of carrying the 
imposed roof loads and shall be supported by 
structural elements which transmit the loads to the 
foundation. 



780 CMR 360&2 ROOF FRAMING 

3608.2.1 Identification and grade: Load-bearing 
dimension lumber for rafters, trusses and ceiling 
joists shall conform to DOC PS 20 and to other 
applicable standards or grading rules, as listed in 
Appendix A, and be identified by a grade mark or 
certificate of inspection issued by an approved 
agency. The grade mark or certificate shall provide 
adequate information to determine F b , the allowable 
stress in bending, and E, the modulus of elasticity. 
Approved end jointed lumber may be used 
interchangeably with solid-sawn members of the 
same species and grade. Blocking shall be a 
minimum of utility grade lumber. 

Exception: Use of Native Lumber shall be 
allowed in accordance with 780 CMR 2303. 0. 

3608.2.1.1 Fire-retardant-treated lumber: The 
allowable unit stresses for fire-retardant-treated 
lumber, including fastener values, shall be 
developed from an approved method of 
investigation which considers the effects of 
anticipated temperature and humidity to which the 
fire-retardant lumber will be subjected, the type of 
treatment and redrying process. The fire-retardant 
treated lumber shall be graded by an approved 
agency. 



3608.2.3 Framing details: Rafters shall be nailed to 
ceiling joists to form a continuous tie between 
exterior walls where joists are parallel to the rafters. 
Where not parallel, rafters shall be tied with a rafter 
tie, located as near the plate as practical. Rafter ties 
shall be spaced not more than four feet (1219 mm) 
on center. Rafters shall be framed to ridge board or 
to each other with gusset plate as a tie. Ridge board 
shall be at least one-inch (25 mm) nominal thickness 
and not less in depth than the cut end of the rafter. 
At all valleys and hips there shall be a valley or hip 
rafter not less than two-inch (51 mm) nominal 
thickness and not less in depth than the cut end of 
the rafter. Hip and valley rafters shall be supported 
at the ridge by a brace to a bearing partition or be 
designed to carry and distribute the specific load at 
that point 

3608.23.1 Ceiling joists lapped: Ends of ceiling 
joists shall be lapped a minimum of three inches 
(76 mm) or butted over bearing partitions or beam 
and toenailed to the bearing member. When 
ceiling joists are used to provide resistance to 
rafter thrust, lapped joists shall be nailed together 
and butted joists shall be tied together in a manner 
to resist such thrust. 



9/19/97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



3608.2.3.2 Collar ties: Pairs of rafters on 
opposing sides of a ridge board in roof pitches 
over three units vertical in 12 units horizontal 
shall be connected by collar ties. Collar ties shall 
be located at a maximum spacing of 48 inches on 
center, measured parallel to the ridge, or at every 
third pair of rafters, whichever is smaller. Collar 
ties shall be located in the upper third of the 
height of the roof, measured from the sill plate to 
the ridge, and shall be a minimum of one inch by 
six inch dimension lumber. Collar ties shall be 
connected to rafters in accordance with the 
requirements for rafter ties in Table 3606.2.3a. 

3608.2.4 Allowable spans: The unsupported spans 
for ceiling joists shall not exceed the values set forth 
in Tables 3608.2.4aa through 3608.2.4dd The 
unsupported spans for rafters shall not exceed the 
values set forth in Tables 3608.2.4a through 
3608.2.4x. When the roof pitch is less than three 



units vertical in 12 units horizontal (25% slope), 
members supporting rafters and ceiling joists, such 
as ridge beams, hips and valleys, shall be designed 
as beams. Selection of rafters shall be based on 
lumber properties, snow load zone and deflection 
due to live load based on ceiling finish (see table 
3603.1.6 

3608.2.4.1 Purlins: Purlins may be installed to 
reduce the span of rafters as shown in Figure 
3608.2.4.1. Purlins shall be sized no less than the 
required size of the rafters that they support. 
Purlins shall be continuous and shall be supported 
by two by four (51 by 102) struts installed to 
bearing walls at a slope not less than 45 degrees 
from the horizontal. The struts shall be spaced not 
more than four feet (1219 mm) on center, and the 
unbraced length of struts shall not exceed eight 
feet (2438 mm). 



558 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - ROOF-CEILING CONSTRUCTION 

FIGURE 3608.2.4.1 
BRACED RAFTER CONSTRUCTION 





RAFTER SPAN 
SEE TABLES 






3608.2.4a throut 


,h3608.2.4x 




J | F 


,1 


°i2 
i< 
oS. 

ZlU 




M 


q. CD 


^-^^^* 5 ° /x 


/ 2-BY4- 

>/ AT 4'0. 



CEIUNG JOIST 
SEE TABLES 

3608.2. 4aa throug 
3608.2.4dd 



X 



• FOUNDATION 



X, 



'BEAR1NGWALL 



For SI: one inch = 25.4 mm, one foot = 304.8 mm. 

NOTE: Where ceiling joists run perpendicular to the rafters, rafter ties shall be nailed to the rafters near the 

plate line and spaced not more than four feet on center. 



3608.2.5 Bearing: The ends of each rafter or ceiling 
joist shall have not less than 1 Vi inches (38 mm) of 
bearing on wood or metal and not less than three 
inches (76 mm) on masonry. 

3608.2.6 Cutting and notching: It shall be unlawful 
to notch, cut or pierce wood beams, joists or rafters 
in excess of the limitations herein specified, unless 
proven safe by structural analysis or suitably 
reinforced to transmit all calculated loads. Notches 
in the top or bottom of rafter shall not exceed V 16 of 
the depth of the rafter, shall not be longer than V3 
the depth of the member and shall not be located in 
the middle third of the span. Notch depth at the ends 
of the member shall not exceed V* the rafter depth. 



Exceptions: 

1. A notch over the support is permitted to 
extend the full width of the support 

2. Notches on cantilevered portions of the 
member are permitted to extend the full length of 
the cantilever if the strength and deflection of 
the cantilever is calculated based on the reduced 
member section. 

3. The tension side of rafters which are four 
inches or greater in nominal thickness, shall not 
be notched, except at ends of members. 

3608.2.7 Holes: Holes drilled, bored or cut into 
rafters shall not be closer than two inches (5 1 mm) 
to the top or bottom of the rafters, or to any other 
hole located in the rafter. Where the rafter is 
notched, the hole shall not be closer than two 



558.1 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 
NON-TEXT PAGE 



558.2 780 CMR -Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - ROOF-CEILING CONSTRUCTION 



inches to the notch. The diameter of the hole shall 
not exceed Vs the depth of the rafter. 

3608.2.8 Lateral support: Rafters and ceiling joists 
having a depth-to-thickness ratio exceeding five to 
one based on nominal dimensions shall be provided 
with lateral support at points of bearing to prevent 
rotation. 

3608.2.8.1 Bridging: Rafters and ceiling joists 
having a depth-to-thickness ratio exceeding six to 
one based on nominal dimensions shall be 
supported laterally by solid blocking, diagonal 
bridging (wood or metal) or a continuous one- 
inch-by-three-inch (25 mm by 76 mm) wood strip 
nailed across the rafters or ceiling joists at 
intervals not exceeding ten feet (3048 mm). 

3608.2.9 Framing of openings: Openings in roof 
and ceiling framing shall be framed with headers 
between ceiling joists or rafters. When the header 
span does not exceed four feet (1219 mm), the 
header may be a single member the same size as the 
ceiling joist or rafter. When the header span exceeds 
four feet (1219 mm), the header and the joists or 
rafters that support the header shall be doubled, and 
approved hangers shall be used to connect the 
header to the joists or rafters. 

3608.2.10 Trusses: Wood trusses shall be designed 
in accordance with approved engineering practice. 
Truss components may be joined by nails, glue, 
timber connectors or other approved fastening 
devices. The design of metal plate connected wood 
trusses shall comply with TPI QST, TPI PCT and 
TPI-1985 "Design Specification for Metal Plate 
Connected Wood Trusses", each as listed in 
Appendix A. Trusses shall be braced according to 
their appropriate engineered design. In the absence 
of specific bracing requirements, trusses shall be 
braced in accordance with TPI BWT, as listed in 
Appendix A. Truss members shall not be cut or 
altered unless so designed. 

3608.2.11 Roof tie-down: Roof assemblies subject 
to wind uplift pressures of 20 pounds per square foot 
(0.958 kN/m 2 ) or greater, shall have rafter or truss 
ties provided in accordance with Table 3608.2.12. 
The resulting uplift forces from the rafter or truss 
ties shall be transmitted to the foundation. 



780 CMR 36083 ROOF SHEATHING 
3608.3.1 Lumber sheathing: Allowable spans for 
lumber used as roof sheathing shall conform to 
Table 3608.3.1. Spaced lumber sheathing for wood 
shingle and shake roofing shall conform to the 
requirements of 780 CMR 3609.8 and 3609.9. 

36083.2 Plywood sheathing: 

36083.2.1 Identification and grade: Plywood 
and wood structural panels shall conform to DOC 
PS 1 or DOC PS 2 as listed in Appendix A, and 
shall be identified by grade mark or certificate of 
inspection issued by an approved agency. 
Plywood and wood structural panels shall comply 
with the grades specified in Table 3605.3.2.1.1a. 

36083.2.1.1 Type: All plywood, when 
designed to be exposed in outdoor applications, 
shall be of an exterior type. Plywood or wood 
structural panel roof sheathing exposed to the 
underside may be of interior type bonded with 
exterior glue, identified as Exposure 1. 
36083.2.13 Fire-retardant-treated plywood: 
The allowable unit stresses for fire-retardant- 
treated plywood, including fastener values, 
shall be developed from an approved method 
of investigation which considers the effects of 
anticipated temperature and humidity to which 
the fire-retardant plywood will be subjected, 
the type of treatment and redrying process. 
The fire-retardant-treated plywood shall be 
graded by an approved agency. 
360833.13 Wood structural panels: Wood 
structural-use panels conforming to DOC PS 2, 
as listed in Appendix A, includes performance- 
rated plywood, oriented strandboard and 
composite panels. Oriented strandboard 
structural-use panels manufactured in Canada 
shall conform to CSA 0437 as listed in 
Appendix A. 

36083.2.2 Allowable spans: The maximum 
allowable spans for plywood and wood structural 
panel roof sheathing shall not exceed the values 
set forth in Table 3605.3.2.1.1a. 

36083.23 Installation: Plywood and wood 
structural panel roof sheathing shall be installed 
with joints staggered or nonstaggered in 
accordance with Tables 360533.1. La and 
3606.23a, or APA E 30 as listed in Appendix A. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



559 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



TABLE 3608.2.12 
WIND UPLIFT FORCES ON ROOF 

TRUSSES AND RAFTERS' 2 - 34 
(Pounds Per Tie-Down Connection) 



WIND UPLIFT 

PRESSURE ON 

ROOF (psf) 


TOTAL BUILDING WIDTH ROOF 
INCLUDING OVERHANG (feet) 


24 


28 


32 


36 


40 


20 


192 


224 


256 


288 


320 


30 


432 


504 


576 


648 


720 


40 


672 


784 


895 


1,008 


1,120 


50 


912 


1,064 


1,216 


1,368 


1,520 


60 


1,152 


1,344 


1,536 


1,728 


1,920 


70 


1,392 


1,624 


1,856 


2.0SS 


2,320 


80 


1,632 


1,904 


2,176 


2,448 


2,720 


90 


1,872 


2,184 


2,496 


2,808 


3,120 



For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, psf = 
0.0479 kNm 2 

1 . A continuous load path capable of resisting the 
tributary forces shall be provided from tie-down 
connections to the foundation. 

2. Wind uplift forces are based on 24-inch spacing of 
roof trusses or rafters. For spacing other than 24 inches, 
forces shall be adjusted accordingly. 

3. Interpolation is permitted for intermediate values of 
wind uplift pressures and building widths. 

4. The rated capacity of approved tie-down devices is 
permitted to include a Vz increase for wind effects. 

5. Tie-down connections shall be provided at bearing 
walls for roof trusses or rafters to resist wind uplift 
forces. 

360833 Particleboard sheathing: 

3608.3.3.1 Identification and grade: 

Particleboard roof sheathing shall conform to 
Type 2-M-W as set forth in ANSI A208.1 as 
listed in Appendix A and shall be so identified by 
a grade mark or certificate of inspection issued by 
an approved agency. 

360833.2 Allowable spans: The allowable loads 
and spans for particleboard roof sheathing shall 
not exceed the values set forth in Table 
360833.2. 

3608333 Installation: Particleboard roof 
sheathing shall be installed in accordance with 
Tables 3606.2.3a and 3608.3.3.2. Where walls are 
subject to wind pressures of 30 pounds per square 
foot (1.44 kN/m") or greater, particleboard roof 
sheathing shall be attached to the gable end with 
8d common nails spaced at no more than four 
inches on center (102 mm), or equivalent 
fasteners. 



TABLE 36083.1 

MINIMUM THICKNESS LUMBER ROOF 

SHEATHING 



RAFTER OR BEAM 
SPACING (inches) 


MINIMUM NET 
THICKNESS (inches) 


24 


Va 


48' 




60' 


l'AT&G 


72^ 





For SI: 1 inch = 25.4 mm, 1 psi= 6.895 kPa. 

1 . Minimum 270 F b , 340,000 £. 

2. Minimum 420 F b , 660,000 £. 

3. Minimum 600 F b , 1,1 50,000 E. 

TABLE 38033.2 

ALLOWABLE LOADS FOR 

PARTICLEBOARD ROOF SHEATHING 1 2 - 3 



GRADE 


THICKNESS 
(inches) 


MAXIMUM 
ON- 
CENTER 
SPACING 


LIVE 
LOAD 

(pounds per 
square foot) 


TOTAL 
LOAD 

(pounds per 
square foot) 




3/e 4 


16 


45 


65 




7 / 4 

'16 


16 


105 


105 


2-M-W 


7 / 4 
'16 


24 


30 


40 




'/= 


16 


110 


150 




Yl 


24 


40 


55 



For SI: 1 inch = 25.4 mm, 1 psi = 6895 kPa. 

1 . Panels are continuous over two or more spans. 

2. Uniform load deflection limitations: V 180 of the span 
under live load plus dead load and '/ 240 of the span under 
live load only. 

3. The panels may be applied parallel or perpendicular 
to the span of the rafters or joists and shall be continuous 
over two or more spans. If the panels are applied 
perpendicular to roof supports, the end joints of the 
panels shall be offset so that four panel corners will not 
meet. Cutouts for items such as plumbing and electrical 
shall be oversized to avoid a forced fit. A '/2-inch gap 
must be provided between the panel and concrete 
masonry walls. Leave a 7 16 -inch gap between panels and 
nail no closer than % inch from panel edge. 

4. Edges shall be tongue and groove or supported with 
blocking or edge clips. 

780 CMR 3608.4 METAL 
3608.4.1 General: Elements shall be straight and 
free of any defects which would significantly affect 
their structural performance. 



560 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - ROOF-CEILING CONSTRUCTION 



TABLE 3608.2.4J 

ALLOWABLE SPANS FOR LOW OR HIGH SLOPE RAFTERS 

30 Lbs. per Sq. Ft Live Load 

For Use in Snow Load Zone 2 
DESIGN CRITERIA: Strength— 15 lbs. per sq. ft. dead load plus 30 lbs. per sq. ft. live load determines fiber stress 
Deflection — For 30 lbs. per sq. ft. live load. Limited to span in inches divided by 1 80. 

RAFTERS: Spans are measured along the horizontal projection and loads are considered as applied on the horizontal projection. 
HOW TO USE TABLES: Enter table with span of rafters (upper figure in each square). Determine size and spacing (last column) 



RAFTER SPACING 
AND SIZE 




ALLOWABLE EXTREME FIBER STRESS IN BENDING, 


'Fb," (p 


si) 




(inches) 


(inches) 


200 


300 


400 


500 


600 


700 


800 


900 


1000 


1100 


1200 


1300 


2x4 


12.0 


3-0 
0.05 


3-8 
0.09 


4-3 
0.15 


4-9 
0.20 


5-3 
0.27 


5-8 
0.34 


6-0 
0.41 


6-5 
0.49 


6-9 
0.58 


7-1 
0.67 


7-5 
0.76 


7-8 
0.86 


16.0 


2-7 
0.04 


3-2 
0.08 


3-8 
0.13 


4-1 
0.18 


4-6 
0.23 


4-11 
0.29 


5-3 
0.36 


5-6 
0.43 


5-10 
0.50 


6-1 
0.58 


6-5 
0.66 


6-8 

0.74 


24.0 


2-2 
0.04 


2-7 
0.07 


3-0 
0.10 


3-4 
0.14 


3-8 
0.19 


4-0 
0.24 


4-3 
0.29 


4-6 
0.35 


4-9 
0.41 


5-0 
0.47 


5-3 
0.54 


5-5 
0.61 


2x6 


12.0 


4-9 
0.05 


5-10 
0.09 


6-8 
0.15 


7-6 
0.20 


8-2 
0.27 


8-10 
0.34 


9-6 
0.41 


10-0 
0.49 


10-7 
0.58 


11-1 
0.67 


11-7 
0.76 


12-1 
0.86 


16.0 


4-1 
0.04 


5-0 
0.08 


5-10 
0.13 


6-6 
0.18 


7-1 
0.23 


7-8 
0.29 


8-2 
0.36 


8-8 
0.43 


9-2 
0.50 


9-7 
0.58 


10-0 
0.66 


10-5 
0.74 


24.0 


3-4 
0.04 


4-1 
0.07 


4-9 
0.10 


5-4 
0.14 


5-10 
0.19 


6-3 
0.24 


6-8 
0.29 


7-1 
0.35 


7-6 
0.41 


7-10 
0.47 


8-2 
0.54 


8-6 
0.61 


2x8 


12.0 


6-3 
0.05 


7-8 
0.09 


8-10 

0.15 


9-10 
0.20 


10-10 
0.27 


11-8 
0.34 


12-6 
0.41 


13-3 
0.49 


13-11 
0.58 


14-8 
0.67 


15-3 
0.76 


15-11 
0.86 


16.0 


5-5 
0.04 


6-7 
0.08 


7-8 
0.13 


8-7 
0.18 


9-4 
0.23 


10-1 
0.29 


10-10 
0.36 


11-6 
0.43 


12-1 
0.50 


12-8 
0.58 


13-3 
0.66 


13-9 
0.74 


24.0 


4-5 
0.04 


5-5 
0.07 


6-3 
0.10 


7-0 
0.14 


7-8 
0.19 


8-3 
0.24 


8-10 
0.29 


9-4 
0.35 


9-10 
0.41 


10-4 
0.47 


10-10 
0.54 


11-3 
0.61 


2x10 


12.0 


8-0 
0.05 


9-9 
0.09 


11-3 
0.15 


12-7 
0.20 


13-9 
0.27 


14-11 
0.34 


15-11 
0.41 


16-11 
0.49 


17-10 
0.58 


18-8 
0.67 


19-6 
0.76 


20-4 
0.86 


16.0 


6-11 
0.04 


8-5 
0.08 


9-9 

0.13 


10-11 
0.18 


11-11 
0.23 


12-11 
0.29 


13-9 
0.36 


14-8 
0.43 


15-5 
0.50 


16-2 
0.58 


16-11 
0.66 


17-7 
0.74 


24.0 


5-8 
0.04 


6-11 
0.07 


8-0 
0.10 


8-11 
0.14 


9-9 
0.19 


10-6 
0.24 


11-3 
0.29 


11-11 
0.35 


12-7 
0.41 


13-2 
0.47 


13-9 
0.54 


14-4 
61 


(inches) 


(inches) 


1400 


1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2400 


2700 


3000 


2x4 


12.0 


8-0 
0.96 


8-3 
1.06 


8-6 
1.17 


.8-9 . 
1.28 


9-0 

1.39 


9-3 
1.51 


9-6 
1.63 


9-9 
1.76 


10-0 
1.88 


10-5 
2.15 


11-1 
2.56 




16.0 


6-11 
0.83 


7-2 
0.92 


7-5 
1.01 


7-7 
1.11 


7-10 
1.21 


8-0 
1.31 


8-3 
1.41 


8-5 
1.52 


8-8 
1.63 


9-0 
1.86 


9-7 
2.22 


10-1 
2.60 


24.0 


5-8 
0.68 


5-10 
0.75 


6-0 
0.83 


6-3 
0.90 


6-5 
0.99 


6-7 
1.07 


6-9 
1.15 


6-11 

1.24 


7-1 
1.33 


7-5 
1.52 


7-10 
1.81 


8-3 
2.12 


2x6 


12.0 


12-6 
0.96 


13-0 
1.06 


13-5 
1.17 


13-10 
1.28 


14-2 
1.39 


14-7 
1.51 


15-0 
1.63 


15^1 
1.76 


15-8 
1.88 


16-5 
2.15 


17-5 
2.56 




16.0 


10-10 
0.83 


11-3 
0.92 


11-7 
1.01 


11-11 
1.11 


12-4 
1.21 


12-8 
1.31 


13-0 
1.41 • 


13-3 
1.52 


13-7 
1.63 


14-2 
1.86 


15-1 

2.22 


15-11 
2.60 


24.0 


8-10 
0.68 


9-2 
0.75 


9-6 
0.83 


9-9 
0.90 


10-0 
0.99 


10-4 
1.07 


10-7 
1.15 


10-10 
1.24 


11-1 
1.33 


11-7 
1.52 


12-4 
1.81 


13-0 
2.12 


2x8 


12.0 


16-6 
0.96 


17-1 
1.06 


17-8 
1.17 


18-2 
1.28 


18-9 
1.39 


19-3 
1.51 


19-9 
1.63 


20-3 
1.76 


20-8 
1.88 


21-7 
2.15 


22-11 
2.56 




16.0 


14-4 
0.83 


14-10 
0.92 


15-3 
1.01 


15-9 
1.11 


16-3 
1.21 


16-8 
1.31 


17-1 
1.41 


17-6 
1.52 


17-11 
1.63 


18-9 
1.86 


1-9-10 
2.22 


20-11 
2.60 


24.0 


11-8 
0.68 


12-1 
0.75 


12-6 
0.83 


12-10 
0.90 


13-3 
0.99 


13-7 
1.07 


13-11 
1.15 


14-4 

1.24 


14-8 
1.33 


15-3 
1.52 


16-3 

1.81 


17-1 
2.12 


2x10 


12.0 


21-1 
0.96 


21-10 
1.06 


22-6 
1.17 


23-3 
1.28 


23-1 i 
1.39 


24-6 
1.51 


25-2 
1.63 


25-10 
1.76 


26-5 
1.88 


27-7 
2.15 


29-3 
2.56 




16.0 


18-3 
0.83 


18-11 
0.92 


19-6 
1.01 


20-1 
1.11 


20-8 

1.21 


21-3 
1.31 


21-10 
1.41 


22-4 
1.52 


22-10 
1.63 


23-11 
1.86 


25-1 
2.22 


26-8 

2.60 


24.0 


14-11 
0.68 


15-5 

0.75 


15-11 
0.83 


16-5 

0.90 


16-11 
0.99 


17-4 
1.07 


17-10 
1.15 


18-3 

1.24 


18-8 
1.33 


19-6 

1.52 


20-8 
1.81 


21-10 
2.12 



For SI: I inch = 25.4 mm, 1 pound per 
NOTE: The modulus of elasticity, "£," 



square inch = 6.895 kPa. 1 pound per square foot = 0.0479 kN/m2. 
in 1 ,000.000 pounds per square inch is shown below each span. 



9/19/97 (Effective 2/28/97) - corrected 780 CMR - Sixth Edition 



575 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



TABLE 3608.2.4k 

ALLOWABLE SPANS FOR LOW OR HIGH SLOPE RAFTERS 

30 Lbs. per Sq. Ft. Live Load (Supporting Gypsum Ceiling) 

For Use in Snow Load Zone 2 
DESIGN CRITERIA: Strength — 15 lbs. per sq. ft. dead load plus 30 lbs. per sq. ft. live load determines fiber stress. 
Deflection — For 30 lbs. per sq. ft. live load. Limited to span in inches divided by 240. 

RAFTERS: Spans are measured along the horizontal projection and loads are considered as applied on the horizontal projection. 
HOW TO USE TABLES: Enter table with span of rafters (upper figure in each square). Determine size and spacing (last column) 
based on stress grade (top row) and modulus of elasticity (lower figure in each square) of lumber to be used. 



RAFTER SIZE 
AND SPACING 




ALLOWABLE EXTREME FIBER STRESS IN BENDING 


,"FA,"(psi) 




( i nches) 


(i nches) 


300 


400 


500 


600 


700 


800 


900 


1000 


1100 


1200 


1300 


2x6 


12.0 


5-10 
0.13 


6-8 
0.19 


7-6 
0.27 


8-2 
0.36 


8-10 
0.45 


9-6 
0.55 


10-0 
0.66 


10-7 
0.77 


11-1 
0.89 


11-7 
1.01 


12-1 
1.14 


16.0 


5-0 
0.11 


5-10 
0.17 


6-6 
0.24 


7-1 
0.31 


7-8 
0.39 


8-2 
0.48 


8-8 
0.57 


9-2 
0.67 


9-7 
0.77 


10-0 
0.88 


10-5 
0.99 


24.0 


4-1 
0.09 


4-9 
0.14 


5-4 
0.19 


5-10 
0.25 


6-3 
0.32 


6-8 
0.39 


7-1 
0.46 


7-6 
0.54 


7-10 
0.63 


8-2 
0.72 


8-6 
0.81 


2x8 


12.0 


7-8 
0.13 


8-10 
0.19 


9-10 

0.27 


10-10 
0.36 


11-8 
0.45 


12-6 
0.55 


13-3 
0.66 


13-11 
0.77 


14-8 
0.89 


15-3 
1.0! 


15-11 
1.14 


16.0 


6-7 
0.11 


7-8 
0.17 


8-7 
0.24 


94 
0.31 


10-1 
0.39 


10-10 
0.48 


11-6 
0.57 


12-1 
0.67 


12-8 
0.77 


13-3 
0.88 


13-9 
0.99 


24.0 


5-5 
0.09 


6-3 
0.14 


7-0 
0.19 


7-8 
0.25 


8-3 
0.32 


8-10 
0.39 


94 
0.46 


9-10 
0.54 


104 
0.63 


10-10 
0.72 


11-3 
0.81 


2x10 


12.0 


9-9 
0.13 


11-3 
0.19 


12-7 
0.27 


13-9 
0.36 


14-11 
0.45 


15-11 
0.55 


16-11 
0.66 


17-10 
0.77 


18-8 

0.89 


19-6 

1.01 


204 
1.14 


16.0 


8-5 
0.11 


9-9 
0.17 


10-11 
0.24 


11-11 
0.31 


12-11 
0.39 


13-9 
0.48 


14-8 
0.57 


15-5 
0.67 


16-2 

0.77 


16-11 
0.88 


17-7 
0.99 


24.0 


6-11 
0.09 


8-0 
0.14 


8-11 
0.19 


9-9 

0.25 


10-6 
0.32 


11-3 
0.39 


11-11 
0.46 


12-7 
0.54 


13-2 
0.63 


13-9 
0.72 


144 
0.81 


2x 12 


12.0 


11-10 
0.13 


13-8 
0.19 


154 
0.27 


16-9 

0.36 


18-1 
0.45 


194 
0.55 


20-6 
0.66 


21-8 
0.77 


22-8 
0.89 


23-9 
1.01 


24-8 
1.14 


16.0 


10-3 
0.11 


11-10 
0.17 


13-3 
0.24 


14-6 
0.31 


15-8 
0.39 


16-9 

0.48 


17-9 
0.57 


18-9 
0.67 


19-8 
0.77 


20-6 
0.88 


21-5 
0.99 


24.0 


8-5 
0.09 


9-8 

0.14 


10-10 
0.19 


11-10 

0.25 


12-10 
0.32 


13-8 
0.39 


14-6 
0.46 


154 
0.54 


16-1 
0.63 


16-9 

0.72 


17-5 
0.81 


(inches) 


(inches) 


1400 


1500 


1600 


1700 


1800 


1900 


2000 


2100 


2200 


2400 




2x6 


12.0 


12-6 
1.28 


13-0 
1.41 


13-5 
1.56 


13-10 
1.71 


14-2 
1.86 


14-7 
2.02 


15-0 
2.18 


154 
2.34 


15-8 
2.51 


16-5 
2.86 




16.0 


10-10 
1.10 


11-3 
1.22 


11-7 
1.35 


11-11 
1.48 


124 
1.61 


12-8 

1.75 


13-0 
1.89 


13-3 
2.03 


13-7 
2.18 


14-2 
2.48 




24.0 


8-10 
0.90 


9-2 
1.00 


9-6 

1.10 


9-9 
1.21 


10-0 
1.31 


104 
1.43 


10-7 
1.54 


10-10 
1.66 


11-1 
1.78 


11-7 
2.02 


124 
2.41 


2x8 


12 


16-6 
1.28 


17-1 
1.41 


17-8 
1.56 


18-2 
1.71 


18-9 
1.86 


19-3 
2.02 


19-9 
2.18 


20-3 
2.34 


20-8 
2.51 


21-7 
2.86 




16.0 


144 
1.10 


14-10 
1.22 


15-3 
1.35 


15-9 
1.48 


16-3 
1.61 


16-8 
1.75 


17-1 
1.89 


17-6 
2.03 


17-11 
2.18 


18-9 
2.48 




24.0 


11-8 
0.90 


12-1 
1.00 


12-6 
1.10 


12-10 
1.21 


13-3 
1.31 


13-7 
1.43 


13-11 
1.54 


144 
1.66 


14-8 
1.78 


15-3 
2.02 


16-3 
2.41 


2x10 


12 


21-1 
1.28 


21-10 
1.41 


22-6 
1.56 


23-3 
1.71 


23-11 
1.86 


24-6 
2.02 


25-2 
2.18 


25-10 
2.34 


26-5 
2.51 


27-7 
2.86 




16.0 


18-3 
1.10 


18-11 
1.22 


19-6 
1.35 


20-1 
1.48 


20-8 
1.61 


21-3 
1.75 


21-10 
1.89 


224 
2.03 


22-10 
2.18 


23-11 
2.48 




24.0 


14-11 
0.90 


15-5 
1.00 


15-11 
1.10 


16-5 
1.21 


16-11 
1.31 


174 
1.43 


17-10 
1.54 


18-3 
1.66 


18-8 
1.78 


19-6 
2.02 


20-8 
2.41 


2x 12 


12 


25-7 
1.28 


26-6 
1.41 


27-5 
1.56 


28-3 
1.71 


29-1 
1.86 


29-10 
2.02 


30-7 
2.18 


314 
2.34 


32-1 
2.51 


33-6 
2.86 




16.0 


22-2 
1.10 


23-0 
1.22 


23-9 
1.35 


24-5 
1.48 


25-2 
1.61 


25-10 
1.75 


26-6 
1.89 


27-2 
2.03 


27-10 
2.18 


29-1 
2.48 




24.0 


18-1 
0.90 


18-9 
1.00 


19-4 
1.10 


20-0 
1.21 


20-6 
1.31 


21-1 
1.43 


21-8 
1.54 


22-2 
1.66 


22-8 
1.78 


23-9 
2.02 


25-2 
2.41 



For Si: 1 inch = 25.4 
NOTE: The modulus 



mm, 1 pound per square inch = 
of elasticity, "E," in 1,000,000 



6.895 kPa, 
pounds per 



1 pound per square foot = 
square inch is shown oelow 



.0479 kN/m2. 
each span. 



576 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR 3609 



ROOF COVERINGS 



3609.1 GENERAL 

3609.1.1 Application: The provisions of 780 CMR 
3609.1 shall control the design and construction of 
roof coverings for all buildings. Roof coverings 
shall be listed for their intended use. Materials for 
which listing is not available shall be required to be 
approved by the State Board of Building 
Regulations and Standards in accordance -with 
780 CMR 109.3.4. 

3609.1.2 Requirements: The roof covering shall be 
capable of accommodating the loads indicated in 
780 CMR 3603.1 and provide a barrier against the 
weather to protect supporting elements and the 
structure beneath. 

3609.1.3 Roofing covering materials: Roofs shall 
be covered with materials as set forth in 780 CMR 
3609.3 through 3609.9. Classified roofing shall 
conform to UL 790, as listed in Appendix A, and 
shall be installed when the edge of the roof is less 
than three feet (914 mm) from a property line or as 
required by city or town ordinance or bylaw. The 
roofing materials set forth in 780 CMR 3609.4 
through 3609.6 and concrete slabs may be accepted 
as Class A roofing. 

780 CMR 36092 DECK PREPARATION 

3609.2.1 Supporting construction: Roofing shall 
be applied only when the supporting roof 
construction is clean and dry. 

3609.2.2 Single layer underlayment: When a 
single ply of underlayment is required, it shall be 
laid parallel to the eaves with a two-inch (5 1 mm) 
top lap and four-inch (102 mm) end lap nailed 
sufficiently to hold in place. 

360923 Multiple layer underlayment: When two 
layers of underlayment are required, they shall be 
laid shingle fashion parallel to the eaves with 19- 
inch (483 mm) top lap and 12-inch (305 mm) end 
lap, with end laps located at least six feet (1829 mm) 
from end laps in the preceding course, and blind 
nailed sufficiently to hold in place. 



780 CMR 36093 ASPHALT SHINGLES 

36093.1 General: Asphalt shingles shall be applied 
only to solidly sheathed roofs Asphalt shingles shall 
be applied according to the manufacturer's printed 
instructions and 780 CMR 36. 

36093.2 Slopes of four units vertical in 12 units 
horizontal (33% slope) or greater: Asphalt 
shingle roofs shall have an underlayment of not less 
than one ply of No. 15 felt, applied as required in 
780 CMR 3609.2 and Table 3609.3.4. 

360933 Slopes less than four units vertical in 12 
units horizontal (33% slope) but not less than two 
units vertical in 12 units horizontal (17% slope): 

Nominally double-coverage asphalt shingles may be 
installed on slopes as low as two units vertical in 12 
units horizontal (17% slope), provided the shingles 
are approved self-sealing shingles or are hand sealed 
and are installed with an underlayment consisting of 
two layers of No. 15 felt, applied as required in 
780 CMR 3609.2 and Table 3609.3.4. The two 
layers of felt shall be cemented together, in addition 
to the required nailin g from the eaves up the roof to 
overlie a point 24 inches (610 mm) inside the 
interior wall line of the building. Asphalt shingles 
shall not be used on roofs with slopes less than two 
units vertical in 12 units horizontal (17% slope). 

36093.4 Fasteners: Asphalt shingles shall be 
fastened according to the manufacturer's printed 
instructions and Table 3609.3.4. 

36093.5 Valley flashing: Roof valleys shall be 
flashed by one of the methods listed in 780 CMR 
3609.3.5.1 through 3609.3.5.3 Asphalt shingles 
shall be applied according to the manufacturer's 
printed instructions. 

36093.5.1 Sheet metal: Open roof valleys may 
be provided of not less than No. 28 gage 
galvanized corrosion-resistant sheet metal and 
shall extend at least eight inches (203 mm) from 
the center line each way. Sections of flashing 
shall be jointed to provide an adequate water lock. 



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THE MASSACHUSETTS STATE BUILDING CODE 



TABLE 36093.4 
ASPHALT SHINGLE APPLICATION 



ROOF OF SLOPE 


NOT PERMITTED BELOW 2:12 


2:12 to less than 4:12 4:12 and over 


DECK REQUIREMENT 


Asphalt shingles shall be fastened to solidly sheathed roofs. Sheathing shall conform to Tables 
3605.3.2.1.1a and 3608.3.3.2 


UNDERLAYMENT 
Temperate climate 


Asphalt strip shingles may be installed on slopes as 
low as two inches in twelve inches, provided the 
shingles are approved self-sealing or are hand 
sealed and are installed with an underlayment 
consisting of two layers of nonperforated Type 15 
felt applied shingle fashion. Starting with an 1 8- 
inch-wide sheet and a 36-inch-wide sheet over the 
eaves, each subsequent sheet shall be lapped 19 
inches horizontally. 


One layer nonperforated Type 15 felt lapped 
two inches horizontally and four inches 
vertically to shed water. 


Severe climate: 

In areas subject to wind- 
driven snow or roof ice 
buildup. 


Same as for temperate climate, and additionally the 
two layers shall be solid cemented together with 
approved cementing material between the plies 
extending from the eave up the roof to a line 24 
inches inside the exterior wall line of the building. 


Same as for temperature climate, except that 
one layer No. 40 coated roofing or coated 
glass base sheet shall be applied from the 
eaves to a line 12 inches inside the exterior 
wall line with all laps cemented together. 


ATTACHMENT 
Type of fasteners 


Corrosion-resistant nails, minimum 12-gage %-inch head, or approved corrosion-resistant 
staples, minimum 16-gage 'V 16 -inch-crown width. 




Fasteners shall be long enough to penetrate into the sheathing 'A inch or through the thickness of 
the sheathing, whichever is less. 


No. of fasteners' 


four per 36-40 inch strip 
two per nine- 1 8-inch strip 


Exposure 

Field of roof 


Per manufacturer's instructions included with packages of shingles. 


Hips and ridges 


Hip and ridge weather exposures shall not exceed those permitted for the field of the roof 


Method 


Per manufacturer's instructions included with packages of shingles. 


FLASHINGS 
Valleys 
Other flashings 


Per 780 CMR 3609.3.5 

Per 780 CMR 3609.3.6 and 3609.3.7 



For SI: 1 inch = 25.4 mm. 

1. Figures shown are for normal application. For special conditions such as mansard application and where roofs are 

in special wind regions, shingles shall be attached per manufacturer's instructions. 



3609.3.5.2 Roll roofing: Woven or closed 
valleys may be constructed by centering 36-inch- 
wide (914 mm) roll roofing material not less than 
Type 50 in the valley over the underlayment. 

36093.53 Multiple layer flashing: Roof valley 
flashing may be of laced composition shingles, 
applied in an approved manner, with an underlay 
not less than 30-pound (14 kg) felt extending ten 
inches (254 mm) from the center line each way, or 
shall be of two layers of 90-pound (41 kg) 
mineral-surfaced cap sheet cemented together 
with the bottom layer not less than 12 inches (305 
mm) wide laid face down and the top layer not 
less than 24 inches (610 mm) wide laid face up. 

36093.6 Side wall flashing: Flashing against a 
vertical sidewall shall be by the step-flashing 
method. 

Exception: Other methods shall be permitted 
when installed in accordance with the shingle 
manufacturer's printed instructions. 

36093.7 Other flashing: Flashings against vertical 
front wall, as well as soil stack, vent pipe and 
chimney flashing, shall be applied according to 
asphalt shingle manufacturer's printed instructions. 



36093.8 Hips and ridges: Hip and ridge shingles 
shall be fastened according to the manufacturer's 
printed instructions and Table 3609.3.4. 

780 CMR 3609.4 SLATE SHINGLES 

3609.4.1 General: Slate shingles shall be applied in 
an approved manner and securely fastened with 
corrosion-resistant nails or corrosion-resistant nails 
and wire. 

3609.4.2 Slate shingles: Slate shingles shall 
conform to ASTM C406 as listed in Appendix A. 
Slate shingles shall not be installed on roof slopes 
below two units vertical in 12 units horizontal 
(2:12). Double-layer No. 15 felt underlayment shall 
be required on roof slopes below four units vertical 
in 12 units horizontal (4:12). Single-layer No. 15 
felt underlayment shall be required on all other 
roof slopes. Slate shingles shall be secured to the 
roof with two fasteners per slate. The minimum 
slate headlap shall be three inches (76 mm). 

3609.43 Valleys: Roof valley flashing shall be 
provided of not less than No. 28 gage galvanized 
corrosion-resistant sheet metal and shall extend at 
least 1 1 inches (279 mm) from the center line each 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - ROOF COVERING 



way and shall have a splash diverter rib not less than 
one inch (25 mm) high at the flow line formed as 
part of the flashing. Sections of flashing shall have 
an end lap of not less than six inches (153 mm) and 
shall be provided with an adequate water lock. 

780 CMR 3609.5 METAL 

3609.5.1 General: Flat sheets or shingles shall be 
applied only to solid sheathed roofs. Metal roofing 
shall be applied in an approved manner consistent 
with the manufacturer's recommendations. 

3609.5.2 Materials: Metal roofing shall conform to 
AA ASM 35, or ASTM A 361 or B 209, as listed in 
Appendix A. 

3609.5.3 Metal shingles: Metal shingles shall not 
be installed on roof slopes below four units vertical 
in 12 units horizontal (4:12). Single-layer 
underlayment of No. 30 felt is required for all 
metal shingles other than flat metal shingles on all 
roof slopes. 

780 CMR 3609.6 TELE, CLAY OR 
CONCRETE SHINGLES 

3609.6.1 Attachment: All roof tile shall be securely 
fastened with corrosion-resistant nails or corrosion- 
resistant nails and wire, or other approved means. 

3609.6.2 Interlocking clay or cement tile: 
Interlocking clay or cement tile shall be installed 
only over solid sheathing or spaced structural 
sheathing boards. Interlocking clay or cement tile 
shall not be installed on roof slopes below four 
units vertical in 12 units horizontal (4:12). 
Horizontal battens shall be required on roof slopes 
over seven units vertical in 12 units horizontal 
(7:12). Single-layer underlayment is required over 
solid sheathing on all roof slopes. Reinforced 
underlayment shall be required where spaced 
sheathing is installed Regardless of roof slope, the 
first three tile courses and all tile within three feet 
(914 mm) of roof edges, changes in roof slope or 
changes in slope direction, shall be fastened to the 
roof. For the field of the roof, fastening is not 
required on roof slopes below five units vertical in 
12 units horizontal (5:12); every tile course shall be 
fastened on roof slopes five units vertical in 12 
units horizontal (5:12) to less than 12 units vertical 
in 12 units horizontal (12:12); and every tile shall 
be fastened on roof slopes 12 units vertical in 12 
units horizontal (12:12) and over. Tile overlap 
shall be in accordance with approved 
manufacturer's installation instructions. 

3609.6.3 Noninterlocking clay or cement tile: 
Noninterlocking clay or cement tile shall not be 
installed on roof slopes below 2'A units vertical in 
12 units horizontal (2'A:12). Double-layer 
underlayment is required on roof slopes below 
three units vertical in 12 units horizontal (3:12). 



Single-layer underlayment is required on all other 
roof slopes. Noninterlocking clay or cement tile 
shall be secured to the roof with two fasteners per 
tile. The minimum tile overlap shall be three 
inches (76 mm). 

3609.6.4 Tile lugs: Tile with projection anchor lugs 
at the bottom of the tile shall be held in position by 
means of one-inch-by-two-inch wood (25 mm by 51 
mm) stripping, treated to resist moisture 
deterioration, nailed to the roof sheathing over the 
underlayment or other approved means. 

3609.6.5 Nailing and flashing: Nailing and valley 
flashing shall be the same as required for slate 
shingles. 

780 CMR 3609.7 BUELT-UP ROOFING 

3609.7.1 Decking: Built-Up roofing shall be 
applied only to solid surface roof decks. 

3609.7.2 Materials: Built-Up roofing shall conform 
to UL 5 5 A as listed in Appendix A . 

3609.7.3 Underlayment: An underlayment of one 
layer sheathing paper is required under built-up 
roofing assemblies when the roof deck is constructed 
of sheathing boards Underlayment is to be applied as 
specified in 780 CMR 3609.2. 

3609.7.4 Base ply: On nailable decks, a base ply is 
to be fastened to the deck in accordance with the 
manufacturer's published specifications and Table 
3609.3.4 

3609.7.4.1 Nonnailable decks: On nonnailable 
decks, cast-in-place concrete or precast concrete, 
a base ply required by manufacturer's 
specification shall be cemented or spot mopped to 
a primed deck as required by the type of deck 
material, using not less than 20 pounds (9.1 kg) 
per square of hot asphalt for solid mopping, or not 
less than ten pounds (4.5 kg) per square for spot 
mopping, or not less than 1 Vi gallons (5.7 L) per 
square of cold bituminous compound, or 25 
pounds (1 1 kg) per square of coal-tar pitch, in 
accordance with the manufacturer's published 
specifications. If a base ply is not used, a 
minimum of three roofing plies applied shingle 
fashion shall be solidly cemented to the primed 
deck and cemented together, using no less 
cementing material than that specified for a 
solidly cemented base ply. 

3609.7.4.2 Insulated decks: On insulated decks, 
a vapor retarder shall be installed between the 
deck and the insulation. Insulation shall be of a 
rigid type suitable for application of a roof 
covering. The insulation must be properly 
attached using mechanical fasteners Type II or 
Type HI asphalt in accordance with ASTM D 3 12, 
as listed in Appendix A. and installed in 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



accordance with the manufacturer 's published ply 
specifications. The insulation may be taped if 
required. A base ply required by the 
manufacturer's specification shall be solidly 
cemented to the insulation, using no less 
cementing material than that specified for a 
solidly cemented base ply to a primed nonnailable 
deck. If a base ply is not used, a minimum of 
three roofing plies applied shingle fashion shall be 
solidly cemented to the insulation and cemented 
together, using no less cementing material than 
that specified for a solidly cemented base ply. 

3609.7.5 Membrane over base ply: A minimum of 
two successive layers of roofing plies shall be 
solidly cemented shingle fashion to the base ply, 
using no less cementing material than that specified 
for a solidly cemented base ply. 

3609.7.6 Surfacing: The built-up roofing assembly 
shall be surfaced by one of the methods described in 
780 CMR 3609.7.6.1 and 3609.7.6.2. 

3609.7.6.1 Mineral aggregate roofs: Mineral 
aggregate surfaced roofs shall be surfaced with 
not less than 60 pounds (27 kg) of hot asphalt or 
75 pounds (34 kg) of coal-tar pitch in which is 
embedded not less than 400 pounds (181 kg) of 
gravel or 300 pounds (136 kg) of crushed slag per 
roofing square. 

3609.7.6.2 Mineral-surfaced cap roofs: Mineral- 
surfaced cap sheets shall be cemented to the 
roofing plies using no less cementing material 
than specified for between the plies. 

780 CMR 3609.8 WOOD SHINGLES 

3609.8.1 Sheathing requirements: Wood shingles 
shall be applied to roofs with solid or spaced 
sheathing. Spaced sheathing boards shall not be less 
than one inch by four inch (25 mm by 102 mm) 
nominal dimensions and shall be spaced on centers 
a distance equal to the actual weather exposure of 
the shingles, not to exceed the dimensions set forth 
in Table 3609.8 3.3. 

3609.8.2 Materials: Wood shingle roofing shall 
conform to CSSB "Grading and Packing Rules for 
Centigrade Red Cedar Shingles," as listed in 
Appendix A. 

3609.83 Installation: Wood shingles shall be laid 
with a side lap of not less than 1 Vn inches (38 mm). 
Joints in adjacent courses shall be offset a minimum 
of 1 Vz inches (38 mm) and no two joints in alternate 
courses shall be in direct alignment. Spacing 
between shingles shall not be less than % inch (6.4 
mm) or more than % inch (9.5 mm). Wood shingles 
shall be fastened to the sheathing in accordance with 
Table 3609. 8.3. 



3609.8.3.1 Roof slope: Shingles shall not be 
installed on a roof having a slope less than three 
units vertical in 12 units horizontal (25% slope) 
On roofs having slopes of three units vertical in 
12 units horizontal (25% slope) to less than four 
units vertical in 12 units horizontal (33% slope), 
shingles shall be installed with reduced exposures 
or they shall be installed over an underlayment of 
not less than one ply of No. 15 felt, applied as 
required in 780 CMR 3609.2. 

3609.83.2 Valley flashing: Roof valley flashing 
shall not be less than No. 28 gage corrosion- 
resistant sheet metal and shall extend ten inches 
(254 mm) from the center line each way for roofs 
having slopes less than 12 units vertical in 12 
units horizontal (100% slope) and seven inches 
(178 mm) from the center line each way for slopes 
of 12 units vertical in 12 units horizontal (100%) 
slope) and greater. Sections of flashing shall have 
an end lap of not less than four inches (102 mm). 

3609.833 Weather exposure: Weather 
exposures shall not exceed those set forth in Table 
3609.8.3.3. Hip and ridge weather exposures 
shall not exceed those permitted for the field of 
the roof. Wood shingle hip and ridge units shall 
conform to CSSB "Grading Rules for Shake Hip 
and Ridge based on the Standards of the Cedar 
Shake and Shingle Bureau," as listed in 
Appendix A. Nails used to fasten hip and ridge 
units shall be longer than those used in the field of 
the roof in order to penetrate the sheathing 3 A- 
inch (19 mm) minimum. 

3609.83.4 Label required: Each bundle of 
shingles shall be identified by a label of an 
approved grading or inspection bureau or agency. 

780 CMR 3609.9 WOOD SHAKES 
3609.9.1 Sheathing requirements: Wood shakes 
shall be applied to roofs with solid or spaced 
sheathing. Spaced sheathing boards shall not be less 
than one-inch-by-four-inch (25 mm by 102 mm) 
nominal dimensions for shakes installed at 
maximum 7 14-inch (1 90 mm) exposures and shall be 
spaced on centers a distance equal to the actual 
weather exposure of the shakes, not to exceed the 
dimensions set forth in Table 3609.8.3.3. For 24- 
inch (610 mm) shakes used in ten-inch (254 mm) 
exposure, the spaced sheathing shall be either one- 
inch-by-four-inch (25 mm by 102 mm) nominal 
dimension board spaced on centers a distance equal 
to the weather exposure with an additional one-inch- 
by-four-inch (25 mm by 102 mm) board placed 
between these boards, or one-inch-by-six-inch (25 
mm by 1 53 mm) nominal dimension boards spaced 
on centers a distance equal to the weather exposure. 
The shakes shall be applied over an underlayment as 
required in Table 3609.8.3. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - CHIMNEYS, FIREPLACES AND 

SOLID FUEL-FIRED APPLIANCES 



The requirements of 780 CMR 3610.2.14 shall 
not eliminate the requirement for noncombustible 
firestopping in accordance with 780 CMR 
3610.2.15. 

3610.2.15 Chimney firestopping: See 780 CMR 
3606.2.7. 

3610.2.16 Chimney crickets Chimney shall be 
provided with . crickets when the dimension 
parallel to the ridgeline is greater than 30 inches 
(762 mm) and does not intersect the ridgeline. 
The intersection of the cricket and the chimney 
shall be flashed and counterflashed in the same 
manner as normal roof-chimney intersections. 
Crickets shall be constructed in conformity with 
Figure 3610.2.16 and Table 3610.2.16. 



3610.4 Masonry fireplaces, general: Masonry 
fireplaces shall conform to the requirements of 
780 CMR 3610.4.1 through 3610.4.7. 

Note: Masonry fireplaces may be prescriptively 
constructed or may be of the "Rumford" type or 
may be of contemporary design; refer, 
additionally to the BOCA National Mechanical 
Code; Brick Institute of America, Technical Notes 
and NFPA 21 1 as listed in Appendix A - also see 
Figures 3610.4.1a, lb, lc, Id,, le, If and lg. 

3610.4.1 Fireplace support: Fireplace 
foundations and supporting walls shall be 
anchored, supported and reinforced as required in 
780 CMR 3610.4.1 through 3610.4.7, Table 
3610.4.1, Figure 3610.4.1a and the applicable 
provisions of 780 CMR 3603 and 3604. 



Figure 3610.2.16 
CHIMNEY CRICKET 




Table 3610.2.16 
CRICKET DIMENSIONS 



ROOF SLOPE 


H 


12-12 


1/2. of W ' 


8-12 


1/3 of W 


6-12 


1/4 of W 


4-12 


1/6 of W 


3-12 


1/8 of W 



3510.3 Factory-built chimneys, general: Factory- 
built chimneys shall be tested and listed to UL-103 
or CAN/ULC-S629-M87 as found in Appendix A 
and shall be installed, operated and maintained in 
accordance with the conditions of their listing and 
the manufacturer's requirements. Factory-built 
chimneys that are listed as part of an assembly with 
factory-built fireplaces shall conform to 780 CMR 
3610.5.1. 



mmm^ 



X\^\\^\^NkV\^^ 



J 




Exception: Masonry fireplaces other than 
those that are prescriptively constructed shall 
comply with the requirements of 780 CMR 
3610.4.1 through 3610.4.7,but may be of a 
design other than shown in Figure 3610.4.1a - 
also see Figures 3610.4.1b, lc, Id,, le, If and 

lg- 

Foundations for masonry fireplaces and 
their chimneys shall be constructed of concrete 
or solid masonry at least 12 inches (305 mm) 
thick and extend at least six inches (153 mm) 
beyond the face of the fireplace or supporting 
wall on all sides. Footings shall be founded on 
natural undisturbed earth or engineered fill 
below frost depth. In areas not subjected to 
freezing, footings shall be at least 12 inches 
(305 mm) below finished grade. 



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601 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Table 3610.4.1 
REQUIREMENTS FOR MASONRY FIREPLACES AND CHIMNEYS 


ITEM 


LETTER 1 


REQUIREMENTS 


Hearth slab thickness 


A 


4" 


Hearth extension 
(each side of opening) 


B 


8" fireplace opening < 6 sq. ft. 
12" fireplace opening z 6 sq. ft. 


Hearth extension 
(front of opening) 


C 


16" fireplace opening < 6 sq. ft. 
20" fireplace opening i 6 sq. ft 


Hearth slab reinforcing 


D 


Reinforced as necessary to carry its own weight 
and all imposed loads 


Thickness of wall of firebox 


E 


1 0" solid brick or 8" where a firebrick lining is 
used. Joints in firebrick 1/4" max. 


Distance from top of opening to throat 


F 


8" 


Smoke chamber edge of shelf 
Rear wall - thickness 
Front wall - thickness 


G 


6" 
8" 


Chimney 
Vertical reinforcing 


- 


Seismic load reinforcement not required in 

Massachusetts 


Horizontal reinforcing 


- 


Seismic load reinforcement not required in 
Massachusetts 


Bond beams 


K 


No specified requirements 


Fireplace lintel 


L 


Noncombustible material 


Walls with flue lining 


M 


Refer to 780 CMR 36 10.2.8 


Walls with unlined flue 


N 


Unlined chimneys are not allowed to be 
constructed in Massachusetts 


Distances between adjacent flues 


- 


Refer to 780 CMR 361 0.2..9 


Effective flue area 
(based on area of fireplace opening) 


P 


Refer to 780 CMR 3610.2.10 and 3610.2.1 1 


Clearances 
Wood frame and 
combustible material 

Above roof 


R 


Refer to 780 CMR 3610.2.14 and 3610.4.7 
2' at 10' (780 CMR 3610.2.5) 


Anchorage 


- 


Refer to 780 CMR 3610.4.1 and Figure 
3610.4.1a 


Footing 
Thickness 

Width 


T 


12"min. 

6" each side of fireplace wall 



For SI: 1 inch = 304.8 mm. 

I. The letters in this column refer to Figure 3610.4.1a 



602 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - CHIMNEYS, FIREPLACES AND 

SOLID FUEL-FIRED APPLIANCES 

Figure 3610.4.1a 
FIREPLACE AND CHIMNEY DETAILS 



tusotwr cap 




BRICK T BLOCK 

rzzzzsm 



ts-zt — f — sfc 




VERTICAL REINggggNC 

jja up irspoca) 

TO FOOTING OOWELS 
i / ^POOTWC WIDTH g- 

^BaAoWo FREE 

STANDING FIREPLACE 



'." \X\NX— NATURAL 

CONCRETT 

roonw; 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



603 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Figures 3610.4.1b through 3610.4.1g 
TYPICAL FIREPLACE DETAILS 






1-12" U1N. 




Figure 3 10.4. Id 
RUMFORD REQUIREMENTS 




604 



780 CMR - Sixth Edition 



2/7/97 (Effective 2/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - CHIMNEYS, FIREPLACES AND 

SOLID FUEL-FIRED APPLIANCES 



3610.4.2 Seismic reinforcing: Not applicable in 
Massachusetts. 

3610.4.2.1 Seismic anchorage: Not applicable 

in Massachusetts. 

3610.43 Fireplace walls: Masonry fireplaces 
shall be constructed of solid masonry units, stone 
or reinforced concrete in accordance with Figure 
3610.4.1a. When a lining of firebrick at least two 
inches (5 1 mm) in thickness is provided, the total 
thickness of back and sides, including the lining, 
shall not be less than eight inches (203 mm). 
When no lining is provided, the thickness of back 
and sides shall not be less than ten inches (254 
mm). 

3610.43.1 Walls, steel fireplace units: Steel 
fireplace units shall be listed in accordance 
with UL 127 as found in Appendix A and shall 
be installed, operated and maintained 
according to their listing, the manufacturer's 
requirements and any applicable requirements 
of 780 CMR. Such fireplaces incorporating a 
fire box liner of not less than Vi inch (6.4 mm) 
in thickness and an air chamber, may be 
installed with masonry to provide a total 
thickness at the back and sides of not less than 
eight inches (203 mm), of which not less than 
four inches (102 mm) shall be of solid 
masonry. Warm-air ducts employed with steel 
fireplace units of the circulating air type shall 
be constructed of metal or masonry. 

3610.4.4 Lintel: Masonry over a fireplace 
opening shall be supported by a lintel of 
noncombustible material. The minimum required 
bearing length on each end of the fireplace 
opening shall be four inches (102 mm). 

3610.4.5 Hearth extension material: Hearth 
extensions shall be of masonry or concrete at least 



four inches (102 mm) thick and supported by 
noncombustible materials and reinforced to carry 
its own weight and all imposed loads. The hearth 
extension shall be readily distinguishable from the 
surrounding floor. Combustible forms and centers 
used during the construction of the hearth 
extension shall be removed after the construction 
is complete. 

Exception: When the bottom of the firebox 
opening is raised at least eight inches (203 
mm) above the top of the hearth extension, a 
hearth extension of not less than % inch-thick 
(9.51 mm) brick, concrete, stone, tile or other 
approved noncombustible material may be 
used. 

3610.4.6 Hearth extension: The hearth and the 
hearth extension shall extend a minimum of 36 
inches (914 mm) from the back of the firebox to 
the end of the hearth extension. Hearth 
extensions shall extend at least 16 inches (406 
mm) in front of, and at least eight inches (203 
mm) beyond, each side of the fireplace opening. 
Where the fireplace opening is six square feet 
(0.557 m2) or larger, the hearth extension shall 
extend at least 20 inches (508 mm) in front of, and 
at least 12 inches (305 mm) beyond, each side of 
the fireplace opening. 

3610.4.7 Fireplace clearance: Wood or 
combustible framing shall not be placed within 
two inches (51 mm) of the outside face of a 
masonry fireplace and not less than six inches 
(153 mm) from the inside surface of the nearest 
flue lining. Wood framing and other combustible 
material shall not be placed within two inches (5 1 
mm) of the back surface of a masonry fireplace. 
See Figures 3610.4.7a and 7b. 



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780 CMR - Sixth Edition 



605 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Figure 3610.4.7a 

CONSTRUCTION REQUIREMENTS FOR A TYPICAL MASONRY FIREPLACE 

IN A WOOD FRAME WALL 




j- WIN. CLEARANCE FROM COMBUSTIBLES 



HEARTH EXTENSION 



Figure 3610.4.7b 
REQUIRED CLEARANCES FROM AMSONRY FIREPLACE TO COMBUSTIBLES 



SUOKE CHAMBER 



COMBUSTIBLE MATERIAL 
PROJECTING MORE 
THAN 1 1/2" 




FIREPLACE WALL 



3610.5 Factory-built fireplaces, general: Factory- 
built fireplaces shall conform to the requirements of 
780 CIvIR 3610.5.1 through 3610.5.4. 

3610.5.1 Installation: Factory-built fireplaces 
that consist of a fire chamber assembly, one or 
more chimney sections, a roof assembly and other 
parts shall be tested and listed to UL-127 as found 
in Appendix A. Such fireplaces may be installed 
when complying with all the following 
provisions: 

1 . The fire chamber assembly is installed to 
provide clear clearance to combustible 
materials not less than set forth in the listing. 

2. The chimney sections are installed to 
provide clearance to combustible material not 
less than specified in the listing and if the 
fireplace chimney extends through floors and 



ceilings, factory-furnished firestops or firestop 
spacers shall be installed. Portions of chimneys 
which extend through rooms or closets are to 
be enclosed to avoid personal contact, contact 
of combustible material, and damage to the 
chimney. 

3. Hearth extensions shall not be less than %- 

inch-thick (9.5 mm) millboard, hollow metal, 

stone, tile or other approved noncombustible 

material. Such hearth extensions may be 

placed on combustible subflooring or finish 

flooring. The hearth extension shall be readily 

distinguished from the surrounding floor. 

Note: Where floor protection underneath, to 

the sides, back or in front of factory-built 

fireplaces is required via testing/listing 

and/or manufacturer's requirments, refer to 



606 



780 CMR - Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ONE AND TWO FAMILY DWELLINGS - CHIMNEYS, FIREPLACES AND 

SOLID FUEL-FIRED APPLIANCES 



floor protector requirements of 780 CMR 
3610.6.7.1 and 3610.6,7,1,1. 

4. Hearth extensions shall extend not less than 
1 6 inches (406 mm) in front of and at least 
eight inches (203 mm) beyond both sides of the 
fireplace opening. 

Exception: Where tested/listed extensions 
are identified, such hearth extension shall be 
allowed and required. 

5. Factory-built fireplaces shall be installed in 
accordance with their listing and the 
manufacturer's installation instructions. 

6. The supporting structure for a hearth 
extension shall be at the same level as the 
supporting structure for the fire place unit 
unless otherwise authorized by the listing. 

3610.6 Solid fuel burning appliances 

3610.6.1 Solid fuel-fired appliances, general: 

Solid fuel-fired appliances employed for comfort 
heating include, but are not limited to, room 
heaters and stoves, fireplace inserts, furnaces and 
boilers; additionally, the fuel for such appliances 
includes, but is not limited to: wood and wood 
pellets, coal and various other solid fuels such as 
nut shells and com, etc. Solid fuel-burning 
appliances shall be tested and listed by approved 
agencies and installed, operated and maintained in 
accordance with such listing, the manufacturers' 
requirements and otherwise conform to the 
requirements of 780 CMR 3610.6. 

Note 1: No solid fuel-burning appliance shall 
be installed in Massachusetts unless such 
appliance conforms to all applicable 
requirements of 780 CMR 3610.6, including 
the testing and listing of all clearances to 
combustibles and identification of required 
floor protection. 

Note 2: In the absence of explicit requirements 
of 780 CMR 3610.6, the applicable 
requirements of NFPA 21 1 and/or the BOCA 
National Mechanical Code, as listed in 
Appendix A, shall apply. 

3610.6.1.1 Listing standards, Room heaters, 
stoves and fireplace inserts: Room heaters, 
stoves and fireplace stoves (inserts), employed 
for comfort heating shall be listed and tested to 
UL 1482 and/or ANSI/UL 737 as found in 
Appendix A and as applicable; all such 
appliances shall bear labeling as required in 
780 CMR 3610.6.2 or 3610.6.3 as applicable. 

3610.6.1.2 Listing standards, all pellet fueled 
solid fuel-burning appliances: All pellet 
solid fuel-burning appliances sold for use in 
Massachusetts shall conform to 780 CMR 
3610.6.1.1 and additionally comply with the 
certification program set forth by the State 
Board of Buildina Relations and Standards 



(for pellet appliance certification information, 
contact the State Board of Building 
Regulations and Standards). 

Note: Commencing January 1, 1998, all 
pellet solid fuel-burning appliances shall be 
tested and listed to ASTM E 1509 as found 
in Appendix A and shall bear such labeling 
as required in 780 CMR 3610.6.2 

3610.6.2 Solid fuel-burning appliance labeling 
(not central heating appliances): Every solid 
fuel-burning appliance utilized for comfort 
heating shall bear a permanent and legible 
factory-applied label supplied to the manufacturer 
and controlled by an approved testing agency; 
such label shall contain the following information: 

1 . Manufacturer's name and trademark; 

2. Model and/or identification number of the 
appliance; 

3. Type(s) of fuel(s) approved; 

4. Testing laboratory's name or trademark 
and location; 

5. Date tested; 

6. Clearances to combustibles 

(a) Above top 

(b) From front 

(c) From back 

(d) From sides 

7. Floor protection 

8. National test standard(s) 

9. Label serial number 

3610.6.3 Solid fuel-burning central heating 
appliance labeling: Every solid fuel-burning 
boiler or warm air furnace shall bear a permanent 
and legible factory-applied label supplied to the 
manufacturer and controlled by an approved 
testing agency; such label shall contain the 
following information: 

1 . Manufacturer's name and trademark; 

2. Model and/or identification number of the 
appliance; 

3. Type(s) of fuel(s) approved; 

4. Testing laboratory's name or trademark 
and location; 

5. Date tested; 

6. Clearances to combustibles 

(a) Above top 

(b) From front 

(c) From back 

(d) From sides 

7. Floor protection if applicable 

8. National test standard(s) 

9. Label serial number 

10. Type of appliance (boiler or warm air 
furnace) 

1 1 . Every boiler, pressure vessel, or pressure 
relief device must be stamped in accordance 
with the requirements of the ASME Boiler and 
Pressure Vessel Code. ASME stamping shall 
also be required for boilers, pressure vessels 



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607 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



and pressure relief devices produced outside 
the United State of America. Where required 
by the ASME Boiler and Pressure Vessel 
Code, ASME stamping may be affixed directly 
to the appliance in lieu of on the data plate. 

3610.6.3 Hazardous locations: Solid fuel- 
burning appliances shall not be installed in 
hazardous locations (any location considered to be 
a fire hazard for flammable vapors, dust, 
combustible fibers or other highly combustible 
substances). 

Exception: solid fuel-fired appliances listed 
for such locations. 

3610.6.4 Air for combustion and ventilation: 

Solid fuel-burning appliances shall be installed in 
a location and manner to assure satisfactory 
combustion of fuel, proper chimney draft and 
maintenance of safe operating temperatures. 
Combustion air may be obtained from interior 
spaces when the interior space containing the 
appliance has a volume, in cubic feet equal to 
one-twentieth (1/20) of the output Btu rating of 
all fuel-burning appliances in the space. When 



buildings are so tight as to preclude adequate 
infiltration, provisions shall be made to introduce 
outside air for combustion and ventilation. 

3610.6..5 Chimney connection: All solid fuel- 
burning appliances shall be connected to 
chimneys in accordance with their listing, the 
manufacturer's requirements and the requirements 
of780CMR36. 

Exception: Solid fuel-burning appliances listed 
for exhaust vent termination other than through 
a chimney. 

3610.6.5.1 Chimney connector clearance to 
combustibles: See 780 CMR Table 3610.6.5.1. 

3610.6.5.2 Chimney flue size: For solid fuel- 
burning comfort heating appliances for one- 
and two family use, the cross-sectional area of 
the flue shall not be less than the cross- 
sectional area of the appliance flue collar. The 
cross-sectional area of the flue shall not be 
more than three times the cross-sectional area 
of the flue collar of the appliance. 



■ U 



Table 3610..6.5.1 
CHIMNEY AND/OR VENT CONNECTOR CLEARANCES TO 
COMBUSTIBLE MATERIALS/SOLID FUEL-BURNING APPLIANCES ONLY 



Description of Appliance 


Connector Type 


Minimum 

Clearance 

(in) 


Minimum 

Clearance 

(mm) 


Residential-Type Appliances 


Single-wall Metal Pipe 
Connector 


18 


457 


Residential-Type Appliances 


Type L Vent Piping 
Connector 


9 


229 


Low-heat Appliances 

Boilers. Furnaces. Water Heaters 


Single-wall Metal Pipe 
Connector 


18 


457 


Medium-Heat Appliances 


Single-wall Metal Pipe 
Connector 


36 


914 


High-Heat Appliances 


Masonry or Metal 
Connector 


Note 3 


Note 3 



1 . For greater detail and guidance, refer to NFPA 211, Section 6-5. 

2. For Chimney Connectors tested and listed for other clearances to combustibles, such tested, listed 
clearances shall apply. 

3. Clearances shall be based on engineering calculations and, good engineering practice - Refer to NFPA 
211, Section 6-5 



608 



780 CMR - Sixth Edition 



2/7/97 (Effective 2/28/97) 



APPENDIX A 

REFERENCED STANDARDS 
Parti 

The following is a listing of the standards referenced in 780 CMR, the effective date of the standard, the 
promulgating agency of the standard and the section(s) of 780 CMR that refer to the standard. 

AA Aluminum Association 

900 19th Street, N.W. 
Suite 300 
Washington, D.C. 20006 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



ASM 35-80 Specification for Aluminum Sheet Metal Work in Building Construction 2002.1, 3609.5.2 

SAS 30-94 Specification for Aluminum Structures 2002.1, 3608.4.3 

AAMA American Architectural Manufactures Association 

Suite 310 

1540 Dundee Road 
Palatine, IL 60067 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



1402-86 Standard Specifications for Aluminum Siding, Soffit and Fascia 1405.3.4 

101-88 Voluntary Specification for Aluminum Prime Windows and Glass Doors 3606.8.1. 3606.9.1 

AASHTO American Association of State Highway and Transportation Officials 

444 North Capitol Street, N.W. 
Suite 225 
Washington, D.C. 20001 

. , , Referenced in 

Standard reference Tjtle 780 CMR Section 

number 



number 



HB-15-92 Standard Specifications for Highway Bridges 1606.1.1 



ACI American Concrete Institute 

P.O. Box 19150 
Detroit, Michigan 48219 



Referenced in 
Standard reference Tjtle 780 CMR Section 

number number 

318-95 Building Code Requirements for Structural Concrete 1705.6.1, 1705.6.2, 1705.6.4 

Table 1705.6.3", 1810.2, 

1810.6,1815.2.3, 1821.3.6, 

1901.1,1901.2,1903.1, 

1903.4, 1903.5.2, 1904.1, 

1904.2, 1904.2.3 

1906.1,1906.2,1906.4.2, 

1906.5.1, 1906.6.1, 1906.7, 

1907.1.3, 1907.1.4, 1908.1, 

1908.2, 1908.2.1, 1908.3.1, 

1908.3.4, 1908.5.2, 1908.8.2, 

1910.1, 1910.3.1, 1910.5, 

1910.6.2, 1910.6.5, 3604.4.1 

336 Concrete Code 1815.4,1815.7 



12/12/97 (Effective 8/28/97) 780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

. . , Referenced in 

Standard reference _... ,..„.„. . 

, Title 780 CMR Section 

number . 

number 

318.1-89 Building Code Requirements for Structural Plain Concrete-with 1 992 Revisions. 1810.2, 1812.3.2, 

1901.2, 1904.1, 
1904.2,3604.4.1 

506.2-90 Specification for Materials, Proportioning, and Application of Shortcrete 191 1.9 

ACI 530/ASCE Building Code Requirements for Masonry Structures 707.3 

5/ TMS402-95 1 8 1 2.3 .2, Table 1 8 1 2.3 .2, 

2101.1.1,2101.1.2,2104.2, 

2104.2.1,2104.3,2104.4, 

2106.3.1,3604.4.1,3606.4.1 

ACI 530.1/ Specifications for Masonry Structures Table 1705.7, 

ASCE6/TMS 2112.1.1 

602-95 



AFPA 



American Forest and Paper Association 
1111 19™ Street, NW, Suite 800 
Washington, D.C. 20036 



Standard reference 


Title 


Referenced in 


number 




780 CMR Section 

number 



NDS-91 



TR-7 



(National Design) Specification for Wood Construction Design Values 

for Wood Construction 3608.2.2, 2312.1, 2312.4, 

2313.3.1,2313.3.2 

Basic Requirements for Permanent Wood Foundations Systems 3603.22.3.4 



AHA 



American Hardboard Association 
520 N. Hicks Road 
Palatine, Illinois 60067 

Referenced in 
Title 780 CMR Section 

number 

Basic Hardboard 1405.3.1 

Hardboard Siding 1405.3.2, 2309.7, 

Table 3607.3.4 

Cellulosic Fiber Board 2309.1, 

, Table 3606.2.3(a) 



Standard reference 



A135.4-95 
Al 3 5.6-90 



A194.1-85 



AISC American Institute of Steel Construction, Inc. 

Suite 3100 

One East Wacker Drive 
Chicago, Illinois 60601-2001 

Standard Referenced in 

reference Title 780 CMR Section 

number number 

ASD-89 Specification for Structural Steel Buildings - Allowable Stress Design and 

Plastic Design Table 1705.5.2, 2203.1, 

2203.5,2208.1 
LFRD-93 Load and Resistance Factor Design Specifications for Structural Steel 

Buildings Table 1705.5.2, 2203.1, 

2203.5,2208.1 
AISC-92 Seismic Provisions for Structural Steel Buildings 2203.2, 2203.2.1 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

APPENDDC A 

AISI American Iron and Steel Institute 

Suite 1300 

1010 17th Street, N.W. 
Washington, D.C. 20036-4700 

Standard reference _. . Referenced in 

number 780 CMR Section number 

AISI-73 Criteria for Structural Applications of Steel Cables for Buildings 2207.2 

CFSD-ASD-86 Specification for Design of Cold- Formed Steel Structural Members - 

with 1989 Addendum 2206.1, 2206.3 2206.3.1 

CFSD-LRFD-91 Load and Resistance Factor Design Specification for Cold-Formed 

Steel Structural Members 2206.1, 2206.3, 2206.3.1 



ATTC American Institute of Timber Construction 

Suite 407 

1818 S. E. Mill Plain Blvd. 
Vancouver, Washington 98684 

Referenced in 
Title 780 CMR Section 

number 

108-93 Standard for Heavy Timber Construction 2304.1 

109-90 Standard for Preservative treatment of Structural Glued Laminated Timber 2313.1.1 

1 12-93 Standard for Tongue and Groove Heavy Timber Roof Decking 2304.1 

117-93 Standard Specifications for Structural Glued Laminated Timber of Softwood 

Species (Design) 2304.1 

1 19-96 Standard Specifications for Hardwood Glued Laminated Timber 2304.1 

A190.1-92 Structural Glued Laminated Timber 2304.1 



Standard reference 
number 



ANSI American National Standards Institute 

11 West 42nd Street 
New York, New York 10036 

Referenced in 
Title 780 CMR Section 

number 

A 108. 1-92 Specifications for the installation of Ceramic Tile with Portland Cement 

Mortar 2105.10, 3607.2.4 

Al 08.4-92 Installation of Ceramic Tile with Organic Adhesives or Water Cleanable Tile 

Setting Epoxy Adhesive 2105.10.7, 3607.2.4 

A108.5-92 Installation of Ceramic Tile with Dry-Set Portland Cement Mortar or Latex- 
Portland Cement Mortar 2105.10.1, 2105.10.3, 

3607.2.4 
Al 08.6-92 Installation of Ceramic Tile with Chemical Resistant, Water Cleanable Tile 

Setting and Grouting Epoxy 2105.10.4 3607.2.4 

A 108.7-92 Specifications for Electrically Conductive Ceramic Tile Installed with 

Conductive Dry-Set Portland Cement Mortar 2105.10.2, 

A117.1 426.14 

Al 08.8-92 Installation of Ceramic Tile with Chemical Resistant Furan Mortar and Grout. 2105.10.5 

A108.9-92 Installation of Ceramic Tile with Modified Epoxy Emulsion Mortar/Grout ". . . 2105.10.6 

A108.10-92 Installation of Grout in Tilework 2105.10.8 

A108.1 1-90 Installation of Interior Cementitious Backer Units 3607.2.4 

All 8.1-92 Specifications for Dry-Set Portland Cement Mortar 2105.10.1,3607.2.4 

Al 18.2-92 Specifications for Conductive Dry-Set Portland Cement Mortar 2105.10.2 

Al 18.3-92 Specifications for Chemical Resistant Water Cleanable Tile Setting and 

Grouting Epoxy and Water Cleanable Tile Setting Epoxy Adhesive 2105.10.4,3607.2.4 

Al 18.4-92 Specifications for Latex-Portland Cement Mortar 2105.10.3 

Al 18.5-92 Specifications for Chemical Resistant Furan 2105.10.5 

A118.6-92 Specifications for Ceramic Tile Grouts 2105.10.8 

All 8.8-92 Specifications for Modified Epoxy Emulsion Mortar/Grout 2105.10.6 

A 136. 1 -92 Specification for Organic Adhesives for Installation of Ceramic Tile. Types 

I and U 2105.10.7, 3607.2.4 

A137.1-88 Specifications for Ceramic Tile 2105.4, 3607.2.4 



Standard reference 
number 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



651 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

_ . . , Referenced in 

Standard reference Tjtle 780 CMR Section 

number number 

A208.1-93 Wood Particleboard 2308.1, 2308.2, 

3605.3.3.1, 
3606.11.1,3608.3.3.1 
Z97.1-84 Safety Performance Specifications and Methods of Test for Safety Glazing 

Materials Used in Buildings 2406.1, 3603.20.1, 

3603.20.4.1.1 
Z21 .66-85 Electrically Operated Automatic Vent Damper Devices for Use with Gas-fired 

Appliances 3621.2.2.2 

NWWDA Industry Standard for Wood Window Units 3606.8.1 

I.S.2-87 

NWWDA Industry Standard for Wood Sliding Doors 3606.9.1 

I.S.3-88 



APA 



American Plywood Association 
P.O. Box 11700 
Tacoma,WA 98411 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



E30-90 



Design and Construction Guide: Residential and Commercial 3608.3.2.3 



ASCE American Society of Civil Engineers 

345 East 47th Street 
New York, NY 10017 

. , . Referenced in 

Standard reference _.. ,„„.... .. 

, Title 780 CMR Section 

number , 

number 

ASCE 3-84 Specifications for the Design and Construction of Composite Slabs 2206.1.1 

ASCE 5/ACI Building Code Requirements for Masonry Structures 707.3, 1705.7, 

S30mvIS 402-95 Table 1705.7, 1812.3.2 

Table 1812.3.2, 

2101.1.1,2104.2, 

2104.3,2104.4, 

2106.3.1 

ASCE 6/ACI Specifications for Masonry Structures 21 12.1.1 

530.1/TMS 602-95 

ASCE 7-95 Minimum Design Loads for Buildings and Other Structures 1604.2, 1605.1, 161 1.12, 

1611.12.2 
ASCE 8-SSD- Specifications for Design of Cold-Formed Stainless Steel Structural 
LRFD/ASD-90 Members 2206.1. 2206.3. 2206.3.1 



ASHRAE American Society of Heating, 

Refrigerating and Air Conditioning Engineers 
1791 Tullie Circle, N.E. 
Atlanta, Georgia 30329-2305 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



90.1-1989 Energy Code for Commercial and High Rise Residential Buildings 1314.5.2 



652 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

APPENDIX A 

ASME American Society of Mechanical Engineers 

345 East 47th Street 
New York, New York 10017 

. , Referenced in 

Standard reference Tjt|e 780 CMR Section 

number number 

A13.1-81(85) Scheme for Identification of Piping Systems 416.15.3 

B3 1.3-93 Chemical Plant and Petroleum Refinery Piping 416.15 

ASTM American Society for Testing Materials 

1916 Race Street 
Philadelphia, Pennsylvania 19103 



Standard 

780 CMR Section number 



_. . Referenced in 

reference Title 



number 

A6-95c Specification for General Requirements for Rolled Steel Plates, Shapes, Sheet 

Piling, and Bars for Structural Use Table 1 705.5.2 

A36-94 Specification for Structural Steel 1818.1, 2105.9.5, 

3606.4.14 

A82-95 Specification for Steel Wire, Plain, for Concrete Reinforcement 2105.9.2, 2105.9.5, 

3606.4.14 

A153-95 Specification for Zinc Coating (Hot Dip) on Iron and Steel Hardware 2105.9.6, 

Table 3606.4.14.1 
A167-94a Specification for Stainless and Heat-Resisting Chromium-Nickel steel Plate, 

Sheet, and Strip 2105.9.2, 2105.9.5, 

2105.9.6, 3604.. 14, 
Table 3606.4.14.1 
Al 85-94 Specification for Steel Welded Wire Fabric, Plain, for Concrete Reinforcement 

2105.9.4, 2105.9.5 

{Note: ASTMA256 - 82 has been discontinued and not replaced by ASTM) 

A252-93 Specification for Welded and Seamless Steel Pipe Piles 1818.1,1819.1 

A283-93a Specification for Low and Intermediate Tensile Strength Carbon Steel Plates 1818.1, 1819.1 

A361-94 Specification for Steel Sheet, Zinc-Coated (Galvanized) by Hot-Dip Process for 

Roofing and Siding 1507.3.7, 3609.5.2 

A366-91 Specification for Steel, Sheet, Carbon, Cold-Rolled Commercial Quality 2105.9.5 

A41 6-94a Specification for Steel Strand, Uncoated Seven Wire for Prestressed Concrete 1 821 .3.2 

A496-95 Specification for Steel Wire, Deformed, for Concrete Reinforcement 2105.9.3 

A 497-95 Specification for Steel Welded Wire Fabric, Deformed, for Concrete 

Reinforcement 2105.9.4 

A5 10-82 Specification for Wire Rods and Course Round Wire, Carbon Steel 3606.4.14 

A 525-91 b Specification for General Requirements for Steel Sheet, Zinc - Coated 

(Galvanized) by the Hot - Dip Process 2105.9.6, 

Table 3606.4.14.1, 
3619.1.1.1.3 
A 568-95 Specification for Steel Sheet, Carbon and High - Strength, Low - Alloy, Hot - 

Rolled and Cold - Rolled, General Requirements for Table 1 705.5.2 

A 572 -94c Specification for High - Strength Low Alloy Columbium - Vanadium Steels of 

Structural Quality 1818.1 

A 588 -94 Specification for High - Strength Low Alloy Structural Steel with 50 ksi (345 

Mpa) Minimum Yield Point to 4 in. (100 mm) Thick 1 81 8.1 

A 615 -95c Specification for Deformed and Plain Billet - Steel Bars for Concrete 

Reinforcement 2105.9.1 

A 616 -95b Specification for Rail - Steel Deformed and Plain Bars for Concrete 

Reinforcement 2105.9.1 

A 617 -95b Specification for Axle - Steel Deformed and Plain Bars for Concrete 

Reinforcement 2105.9.1 

A 641 -92 Specification for Zinc-Coated (Galvanized) Carbon Steel Wire 2105.9.6, 

Table 3606.4.14.1 

A706-95b Specification for Low -Alloy Steel Deformed Bars for Concrete Reinforcement 1705.6.1, 1906.5.2, 

2105.9.1 
A 755 -95 Specification for Steel Sheet, Metallic - Coated by the Hot - Dip Process and 
Prepainted by the Coil - Coating Process for Exterior Exposed Building 

Products 1507.3 7 

B101-92 Specification for Lead - Coated Copper Sheets 1507.3.7 

12/12/97 (Effective 8/28/97) 780 CMR - Sixth Edition 653 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Standard 
reference 
number 



Referenced in 
780 CMR Section number 



B 209-89 
B 227-80 
C5-79 
C 28-92 
C 31-95 
C 33-93 
C 34-93 
C 35-95 
C 36-92 

C 37-92 
C 39-94 
C 55-95 
C 56-93 
C 59-91 
C 61-95 
C 62-95a 

C 67-94 
C 73-95 
C 79-95 

C 90-85 
C 94-95 
C 126-95 

CI 29-85 
C145-85 
CI 50-95 



C 172-90 
C 206-84 
C 208-95 

C 212-93 
C216-95a 
C 222-91 
C231-91b 
C 260-95 
C 270-95 
C 330-89 
C 406-89 
C 474-94 
C 475-94 

C476-95 
C494-92 
C503-89 

C5 14-94 

C532-88 
C 557-93 
C 568-89 
C 578-87 
C 587-91 

C 588-95 



Specification for Aluminum and Aluminum-Alloy Sheet and Plate 3609.5.2 

Specifiation for Hard-Drawn Copper-Clad Steel Wire 3606.4.14 

Specification for Quicklime for Structural Purposes (Re-approved 1992) Table 2505.2, 3607.2.2 

Specifications for Gypsum Plasters Table 2505.2, 3607.2.2 

Practice for Making and Curing Concrete Test Specimens in the Field 1908.3.2, 1908.3.3 

Specifications for Concrete Aggregates 1906.3, Table 1907.1 .1 

Specifications for Structural Clay Load-Bearing Wall Tile 2105.2, 

Specifications for Inorganic Aggregates for Use in Gypsum Plaster Table 2505.2, 3607.2.2 

Specifications for Gypsum Wallboard Table 2503.2, 

3607.2.3.1 

Specifications for Gypsum Lath Table 2505.2, 3607.2.2 

Test Method for Compressive Strength of Cylindrical Concrete Specimens 1908.3.2 

Specification for Concrete Building Brick 2105.1 

Specification for Structural Clay Non-Load-Bearing Tile 21 05.2 

Specifications for Gypsum Casting and Molding Plaster Table 2505.2, 3607.2.2 

Specifications for Gypsum Keene's Cement Table 2505.2, 3607.2.2 

Specifications for Building Brick (Solid Masonry Units made from from Clay or 

Shale) 2105.2, 3602.2 

Test Methods of Sampling and Testing Brick and Structural Clay Tile 21 12.5 

Specifications for Calcium Silicate Face Brick (Sand Lime Brick) 2105.1 

Specifications for Gypsum Sheathing Board Table 2503.2, 

Table 3606.2.3(a) 

Hollow Load-Bearing Concrete Masonry Units 3602.2 

Specifications for Ready-Mix Concrete 1908.5.1 

Specifications for Ceramic Glazed Structural Clay Facing Tile, Facing Brick and 

Solid Masonry Units 2105.2 

Nonload-Bearing Concrete Masonry Units , 3602.2 

Solid Load-Bearing Concrete Masonry Unit 3602.2 

Specification for Portland Cement 1906.2, 1907.1.2.1, 

1907.1.2.2.3,1908.2.1, 
1908.2.2, Table 2505.2, 

3604.2.2 

Practice for Sampling Freshly Mixed Concrete 1908.3.2 

Specification for Finishing Hydrated Lime Table 2505.2 

Specification for Cellulosic Fiber Insulating Board 2309.1, 

Table 3606.2.3(a) 

Specification for Structural Clay Facing Tile 21 05.2 

Specification for Facing Brick (Solid Masonry Units Made from Clay or Shale) 2105.2 

Specifications for Asbestos-Cement Roofing Shingles 1507.2.1 

Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method 1907.1 .1 

Specification for Air-Entraining Admixtures for Concrete 1906.6.2 

Specification for Mortar for Unit 2105.7, 3606.7.1.1 

Specification for Lightweight Aggregates for Structural Concrete 1906.3 

Specification for Roofing Slate 1507.2.7, 3609.4.2 

Test Methods for Joint Treatment Materials for Gypsum Board Construction Table 2503.2 

Specification for Joint Compound and Joint Tape for Finishing Gypsum Board Table 2503.2, 

3607.2.3.1 

Specification for Grout for Masonry 2105.1 1, 3606.7.1 .1 

Specification for Chemical Admixtures for Concrete 1906.6.2 

Specification for Marble Dimension Stone (Exterior) 2105.3 

Specification for Nails for the Application of Gypsum Wallboard _ Table 2503.2, 

3607.2.3.1 

Specification for Structural Insulating Formboard (Cellulosic Fiber) 2309.1 

Specification for Adhesives for Fastening Gypsum Wallboard to Wood Framing 3607.2.3 . 1 

Specification for Limestone Dimension Stone 2105.3 

Specification for Preformed Cellular Polytyrene Thermal Insulation 3604.3.3 

Specification for Gypsum Veneer Plaster Table 2505.2, 

3607.2.2 
Specification for Gypsum Base for Veneer Plasters Table 2505.2, 

3607.2.2 

Specification for Blended Hydraulic Cements 1907.1.2.1, 

1907.1.2.2.1, 
1907.1.2.2.2, 1908.2.2, 

3604.2.2 



654 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 



APPENDIX A 



Standard 
reference 
number 



Referenced in 
780 CMR Section number 

Specification for Granite Dimension Stone 2105.3 

Specification Quartz- Based Dimension Stone 21 05.3 

Specification for Fly Ash and Raw or Calcined Natural Pozzolan for Use as a 

Mineral Admixture in Portland Cement Concrete 1906.6.3, 1907.1.2.1, 

1907.2.2.1 

Specification for Slate Dimension Stone 2105.3 

Specification for Water - Resistant Gypsum Backing Board Table 2503.2, 2503.4 

3607.2.4.1 

Specification for Bonding Compounds for Interior Plastering Table 2505.2, 3607.2.2 

Specification for Non-Load (Axis) Bearing Steel Studs, Runners (Track), and 

Rigid Furring Channels for Screw Application of Gypsum Board Table 2503.2, 

Table 2505.2, 
3607.2.3.3 
Specification for Hollow Brick (Hollow Masonry Units Made from Clay or 

Shale) 2105.2 

Specification for Concrete Made by Volumetric Batching and Continuous 

Mixing 1908.5.1 

Specification for Prefaced Concrete and Calcium Silicate Masonry Units 2105.1 

Specification for Installation of Steel Framing Members to Receive Screw- 
Attached Gypsum Board Table 2504.1 

Specification for High- Solids Content, Cold Liquid- Applied Elastometric 

Waterproofing Membrane for Use With Separate Wearing Course 1507.3.6 

Specification for Installation of Interior Lathing and Furring Table 2504.1 

Specification for Application of Interior Gypsum Plaster Table 2504.1 

Specification for Application of Gypsum Veneer Plaster Table 2504.1, 3607.2.2 

Specification for Application of Gypsum Base to Receive Gypsum Veneer 

Plaster Table 2504.1, 3607.2.2 

Specification for Metal Lath (Re-approved 1992) Table 2505.2, 3607.2.2 

Specification for Packaged, Dry, Combined Materials for Surface Bonding 

Mortar 1813.3.2.2, 2105.8, 

3604.6.1 

Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters Table 2505.2, 3607.2.2 

Specification for Application of Portland Cement Based-Plaster 2506.3 

Specification for Surface-Applied Bonding Agents for Exterior Plastering Table 2505.2 

Specification for Welded Wire Lath (Re-approved 1990) Table 2505.2, 3607.2.2 

Practice for Construction of Dry-stacked, Surface-Bonded Walls 2105.8, 2106.4 

Specification for Steel Drill Screws for the Application of Gypsum Board or 

Metal Plaster Bases to Steel Studs from 0.033 in. (0.84 mm) to 0.1 12 in. (2.84 

mm) in Thickness Table 2503.2, 

Table 2505.2, 
3607.2.3.5 
Specification for Load Bearing (Transverse and Axial) Steel Studs, Runners 

(Track), and Bracing or Bridging for Screw Application of Gypsum and Metal 

Plaster Bases Table 2505.2, 

3607.2.3.3 
Specification for High- Solids Content, Cold Liquid- Applied Elastometric 

Waterproofing Membrane with Integral Wearing Surface 1507.3.6 

Specifications for Predecorated Gypsum Board 3607.2.3.1 

Specification for Ground Granulated Blast - Fumace Slag for Use in Concrete 

and Mortars 1906.6.4, 1907.1.2.1, 

_ 1907.1.2.2.2, 
Specification for Drill Screws for the Application of Gypsum Board or Metal 

Plaster Bases Table 2503.2, 

Table 2505.2, 
3607.2.3.1,3607.2.3.5 
Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs 

Accessories and Related Accessories Table 2504. 1 

Specification for Spray - Applied Rigid Cellular Polyurethane Thermal 

Insulation 1507.3.5 

Specification for Woven Wire Plaster Base (Re-approved 1990) 3607.2.2 

Specification for Accessories for Gypsum Wallboard and Gypsum Veneer Base 

(Re-approved 1990) 3607.2.2, 3607.2.3.1 

Specification for Installation of Lathing and Furring for Portland Cement - Based 

Plaster 2506.3, 3607.2.2 



C 615-92 
C 616-95 
C 618-95 



C 629-89 
C 630-95 



C 631 -95a 
C 645-95a 



C 652-95C 

C 685-95 

C 744-95a 
C 754-95a 

C 836-89a 

C 841-90 
C 842-85 
C 843-94 
C844-85 

C847-93 
C887-95 



C897-95a 

C926-95 

C932-85 

C933-85 

C946-91 

C954-93 



C955-95b 



C957-93 



C960-91 
C989-95 



CI 002-93 



C1007-83 
CI 029-90 



CI 032-86 
CI 047-85 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

Standard _. . Referenced in 
reference ™ e 780 CMR Section number 
number ^ 

C1088-94 Specification for Thin Veneer Brick Units Made from Clay or Shale 2105.2 

D1586 

D25-91 Specification for Round Timber Piles 1822.1 

D56-93 Test Method for Flash Point by Tag Closed Tester 307.2 

D86 Test Method for Distillation of Petroleum Products 307.2 

D93-94 Test Methods for Flash Point by Pensky-Martens Closed Tester 307.2 

D224-89 Specification for Smooth- Surfaced Asphalt Roll Roofing (Organic Felt) 1507.2.2 

D225-95 Specification for Asphalt Shingles (Organic Felt) Surfaced With Mineral 

Granules 1507.2.3 

D226-95 Specification for Asphalt- Saturated Organic Felt Used in Roofing and 

Waterproofing Table 1507.3.1 

D227-95 Specification for Coal-Tar Saturated Organic Felt Used in Roofing and 

Waterproofing Table 1507.3.1 

D249-89 Specification for Asphalt Roll Roofing (Organic Felt) Surfaced with Mineral 

Granules 1507.2.2 

D312-95 Specification for Asphalt Used in Roofing Table 1507.3.1, 

3609.7.4.2 

D323-94 Test Method for Vapor Pressure of Petroleum Products (Reid Method) 307.2 

D368 Tension Load Test 

D371-89 Specification for Asphalt Roll Roofing (Organic Felt) Surfaced with Mineral 

Granules; Wide- Selvage 1507.2.2 

D450-91 Specification for Coal-Tar Pitch Used in Roofing, Dampproofing, and 

Waterproofing Table 1507.3.1 

(Note 568-77 has been discontinued and not replaced by ASTM) 
D635-91 Test Method for Rate of Burning and/or Extent and Time of Burning of Self- 

Supporting Plastics in a Horizontal Position 2601.2, 2604.1 

Dl 143-81 Test Method for Piles under Static Axial Compressive Load 1817.4.2, 1817.4.3 

D1227-87 Specification for Emulsified Asphalt Used as a Protective Coating for Roofing 1 507.3.6 

D1248-84 Specification for Polystyrene Plastics Molding and Extrusion Materials 3619.1.1.2 

(1989) 

D1557 Test methods for Moisture-Density Relations of Soils and Soil Aggregate 

Mixtures Using 10-Ib. (4.54-kg) Rammer and 18-in. (457-mm) Drop 1804.3.2, 1805.3 

D 1 586-84 Method for Penetration Test and Split Barrel Sampling of Soils Table 1 804.3, App. D 

D1761-88 Test Methods for Mechanical Fasteners in Wood 2312.1, 2312.2, 2312.3 

Dl 784-90 Specification for Rigid Poly (Vinyl Chloride) (PFC) Compounds and Chlorinated 

Poly (Vinyl Chloride) (CPVC) Compounds 3619.1.1.2 

D1863- 86 Specification for Mineral Aggregate Used on Built-Up Roofs Table 1507.3.1 

D 1929-93 Test Method for Ignition Properties of Plastics 2601.2, 2604.2 

D2178-89 Specification for Asphalt Glass Felt Used in Roofing and Waterproofing Table 1507.3.1 

D24 12-87 Test Method for Determination of External Loading Characteristics of Plastic 

Pipe by Parallel-Plate Loading 3619.1.1.2 

D2487 Classification of Soils for Engineering Purposes (Unified Soil Classification 

System) Appendix D 

D2488 Practice for description and Identification of Soils (Visual-Manual Procedure) Appendix D 

D2626-95 Specification for Asphalt-Saturated and Coated Organic Felt Base Sheet Used in 

Roofing Table 1507.3.1 

(Note: D2277-87 has been discontinued and not replaced by ASTM) 
D2843-93 Test Method for Density of Smoke from the Burning or Decomposition of 

Plastics 2601.2, 2604.1 

D2898-94 Methods for Accelerated Weathering of Fire-Retardant Tested Wood for Fire 

Testing 4506.2, 2310.3 

D2938 Table 1804.3, App. D 

D3161-81 Test Method for Wind Resistance of Asphalt Shingles 1505.2.3 

D3201-94 Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood- 
based Products 23 1 0.3 

D3462-93a Specification for Asphalt Shingles Made from Glass Felt and Surfaced with 

Mineral Granules 1 507.2.3 

D3468-90 Specification for Liquid- Applied Neoprene and Chlorosulfonated Polyethylene 

Used in Roofing and Waterproofing 1 507.3.6 

D3672-86 Specification for Venting Asphalt - Saturated and Coated Inorganic Felt Base 

Sheet Used in Roofing Table 1507.3.1 

D3679-88 Rigid Poly (Vinyl Chloride) (PVC) Siding Table 3607.3.4 

D3689-90 Test Method Individual Piles under Static Axial Tensile Load 1 81 7.7.2 

D3746-85 Test Method for Impact Resistance of Bituminous Roofing Systems 1505.3.2 



656 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

APPENDDC A 



Standard 

t;»i a 

780 CMR Section number 



_. , Referenced in 

reference Title 



number 



D3909-95a Specification for Asphalt Roll Roofing (Glass Felt) Surfaced with Mineral 

Granules 1507.2.2, 

Table 1507.3.1 

D3966-90 Test Method for Piles Under Lateral Loads 1 81 7.6.2 

D4099-89 Specification for Poly (Vinyl Chloride) (PVC) Prime Wndows 3606.8.1 

D4272-90a Test Method for Total Energy Impact of Plastic Films by Dart Drop 1 505.3.2 

D4434-87 Specification for Poly (Vinyl Chloride) Sheet Roofing 1507.3.3 

D4601-95 Specification for Asphalt Coated Glass Fiber Base Sheet Used in Roofing Table 1507.3.1 

D4637-87 Specification for Vulcanized Rubber Sheet Used in Single-Ply Roof Membrane 1 507.3.2 

D5055-95a Specification for Establishing and Monitoring Structural Capacities of 

Prefabricated Wood I-Joists 2313.5 

E72-95 Methods of Conducting Strength Tests of Panels for Building Construction 2305.7 

E84-95b Test Method for Surface Burning Characteristics of Building Materials 412.3.6.3, 428.1 1, 

704.4.1.2,722.2,722.3, 

803.2,803.3.2,2310.2, 

2601.2,2603.3, 

2603.6.3, 2603.7.4, 

2604.1,2805.2.2, 

3105.3,3603.17.1.1, 

3603.17.2.6,3603.17.3, 

3603.18.3,3603.19.1, 

3603.19.2,3612.2 

E90-90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss 

of Building Partitions 1214.2, 3603.4.3.1 

E96-90 Standard Test for Water Vapor Transmission of Materials 

E108-95 Test Methods for Fire Tests of Roof Coverings 1506.1, 1506.2, 

2608.2, 2608.3 

El 19-95a Test Methods for Fire Tests of Building Construction and Materials 412.3.6.2, 704.1.1, 

705.2.4 705.4, 707.7.2, 

707.7.3,707.8.1.2, 

709.6.1,709.6.2, 

709.6.4, 709.7.1.2, 

713.4.2,2105.2,2603.4, 

3603.4.1 

E136-95 Test Method for Behavior of Materials in Vertical Tube Fumace at 750°C 704.4.1.1, 3612.2 

E152-81a Methods of Fire Tests of Door Assemblies 716.1,716.1.1, 

3603.17.3 

E163-84 Methods of Fire Tests of Window Assemblies 718.1, 719.1 

E283-91 Test Method for Rate of Air Leakage Through Exterior Windows, Curtain Walls, 

and Doors Under Specified PressureDifferences Across the Specimen 3606.8.2, 3606.9.2 

E492-90 Test Method for Laboratory Measurement of Impact Sound Transmission 

Through Floor-Ceiling Assemblies Using the Tapping Machine 1214.3, 3603.4.3.3 

E648-95 Test Method for Critical Radiant Flux of Floor-Covering Systems Using a 

Radiant Heat Energy Source 805.2 

E814-94b Test Method for Fire Tests of Through-Penetration Fire Stops 707.7.2, 707.7.3, 

709.6.1,709.6.2, 
713.4.1 
E838-81 Practice for Performing Accelerated Outdoor Weathering Using Concentrated 

Natural Sunlight 1505.3.1 

E970-89 Test Method for Critical Rdiant Flux of Exposed Attic Floor Insulation Using a 

Radiant Heat Energy Sources ■_■ - • 3603.19.4 

El 509- Specification for Room Heaters, Pellet Fuel-Burning Type 

G23-95 Practice for Operating Light- Exposure Apparatus (Carbon- Arc Type) With and 

Without Water for Exposure of Nonmetallic Materials 1505.3.1 

G26-95 Practice for Operating Light- Exposure Apparatus (Xenon- Arc Type) With and 

Without Water for Exposure of Nonmetallic Materials 1505.3.1 

G53-95 Practice for Operating Light- and Water- Exposure Apparatus (Fluorescent UV - 

Condensation Type) for Exposure of Nonmetallic Materials 1 505.3. 1 



12/12/97 (Effective 8/28/97) 780 CMR - Sixth Edition 657 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



AWPA 



American Wood Preservers Association 

P.O. Box 286 

Woodstock, Maryland 21163-0286 



Standard Title Referenced in 

reference number 780 CMR Section number 

C I -95 All Timber Products -Preservative Treatment by Pressure Processes 1 506.3, 23 1 1 .3, 

3603.22.3.1 
C2-95 Lumber, Timber, Bridge Ties and Mine Ties -Preservative Treatment by 

Pressure Processes 1808.1, 1808.2, 2311.3, 

2311.4,2311.5,2311.7, 
3603.22.3.1,3603.22.4 

C3-95 Piles - Preservative Treatment by Pressure Processes 1 808. 1 , 1 822.2, 

3603.22.3.1 

C4-95 Poles - Preservative Treatment by Pressure Processes 3603.22.3.1 

C9-95 Plywood- Preservative Treatment by Pressure Processes 231 1.3, 231 1.4, 231 1.5, 

2311.7,3603.22.3.1, 
3603.22.4 
CI 5-90 Wood for Commercial-Residential Constrruction Preservative Treatment 

by Pressure Process 3603.22.3. 1 

C18-90 Standard for Pressure-treated Material in Marine Construction 3603.22.3.1 

C20-93 Structural Lumber - Fire- Retardant Treatment Pressure Processes 2310.2, 3603.22.3.1 

C22-93 Lumber and Plywood for Permanent Wood Foundations - Preservative 

Treatment by Pressure Processes 1808.3, 3603.22.3.1, 

3604.2.1.2,3605.4.3 
C23-84 Round Poles and Posts Used in Building Construction, Preservative 

Treatment by Pressure Process 3603.22.3.1 

C24-86 Sawn Timber Piles Used for Residential Commerce Building 3603.22.3.1 

C27-93 Plywood- Fire-Retardant Treatment by Pressure Process 2310.2, 3603.22.3.1 

C28-90 Standard for Preservative Treatment of Structural Glues-Laminated 

Members and Laminations Before Cluing of Southern Pine, Pacific 

Coast Douglas Fir, Hem-fir and Western Hemlock by Pressure Process 

M4-95 Standard for the Care of Preservative- Treated Wood Products 1822.2 

P1/P13-95 Standard for Coal Tar Creosote for Land and Fresh Water and Marine 

(Coastal Water) Use 231 1.3, 3603.22.3.1 

P2-95 Standard for Creosote Solutions 2311.3, 3603.22.3.1 

P3-89 Standard for Creosote - Petroleum Oill Solution 3603.22.3.1 

P5-95 Standards for Waterbome Preservatives 231 1.3, 3603.22.3.1, 

3604.2.1.2 

P8-95 Standards for Oil- Bome Preservatives 231 1.3, 3603.22.3.1 

P9-92 Standards for Solvents and Formulations for Organic Preservative Systems. ... 231 1.3. 3603.22.3.1 



AWS 



American Welding Society 
550 N.W. LejeuneRoad 
P.O. Box 351040 
Miami, Florida 33135 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



Dl.1-92 
D 1.4-92 



Structural Welding Code- Steel 

Structural Weldine Code- Reinforced Steel 



1705.5.3.2.1 
. .. T 906.5.2 



658 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 



APPENDIX A 



BOCA 



Building Officials and Code Administrators International 

4051 West Flossmoor Road 

Country Club Hills, Illinois 60477-5795 



Standard reference 
number 



Title 



Referenced in 
780 CMR Section number 



BNFOC-93 BOCA National Fire Prevention Code 

Note: 527 CMR is the Fire Prevention 
code for Massachusetts 

BNMC-93 BOCA National Mechanical Code 201.3, 307.8, 408.4.1, 408.5, 41 1.3, 416.9, 417.1, 

417.3, 418.3.1.4, 418.3.2, 418.3.2.3, 418.3.3, 

418.3.4, 419.2, 419.2.1, 602.4.2, 602.4.3, 717.2, 

722.2,913.1, 1203.1, 1208.3, 1209.1, 1210.3, 

21 14.2, 21 14.9, 2305.12, 2801.2, 2802.1, 2802.3, 

2804.1, 2805.2.3, 2805.2.4, 2808.3, 281 1.1, 3107.6, 

3309.2,3603.6.7.1 

BNPC-93 BOCA National Plumbing Code 

Note: 248 CMR is the Plumbing Code for 
Massachusetts 

CGSB Canadian General Standards Board 

Technical Information Unit 
PCI, Phase III, Place Du Portage 
Hull, Ottawa, Canada K1A 1G6 

... Referenced in 

Standard reference Tit]e 780 CMR Section 

number number 

37-GP-52M-84 Roofing and Waterproofing Membrane, Sheet Applied, Elastometric 1505.3.2, 1507.3.2 

37-GP-54M-79 Roofing and Waterproofing Membrane, Sheet Applied, Flexible, Polyvinyl 

Chloride 1507.3.3 

37GP-56M-80 Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing - 

with Dec. 1985 revision 1507.3.4 



CPSC 



Consumer Product Safety Commission 
Office of the Secretary 
Washington, D.C. 20207 

Referenced in 
Title 780 CMR Section 

number 

Safety Standard for Architectural Glazing 2405.1, 2406.1, 

2407.2,3603.20.4.1, 

3603.20.4.1.1 

Interim Safety Standard for Cellulose Insulation 722.4 

Cellulose Insulation 722.4 

Hazardous Substances and Articles; Administration and Enforcement 

Regulations 307.2 

Standard for the Surface Flammability of Carpets and Rugs 805.3, 805.5 



Standard reference 
number 



16CFR 

Part 1201-77 

16CFR 
Part 1209-86 
16CFR Part 1404-8 
16CFRPartl500-S 

16CFR, Part 1630 
(DOC FF-1>70 



CSA 



Canadian Standards Association 

178 Rex Dale Boulevard 

Rex Dale, Ontario, Canada M9W1R3 



Standard reference 
number 



Title 



Referenced in 
780 CMR Section number 



CSA0437-M92 



OSB and Waferboard 3605.3.2.1.2. 3608.3.2.1.3 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

CSSB Cedar Shake and Shingle Bureau 

515 116™ Avenue, NE, Suite 275 
Bellevue, WA 98004 

Standard Title Referenced in 

reference number 780 CMR Section 

number 

CSSB-84 Grading and Packing Rules for Certigrade Red Cedar Shingles (Revised 

February 1, 1984) 3609.8.2 

CSSB-85 Grading and Packing Rules for Cert-Split Red Cedar Shakes (Revised 

October 1, 1985) 3609.9.2 

CSSB-90 Grading Rules for Shake Hip and Ridge based on the Standards of the Cedar 

Shake and Shingle Bureau 3609.8.3.3, 3609.9.3.4 

CSSB-90 Grading Rules for Certi-Sawn Taper-Sawn Cedar Shakes (Revised May 30, 3609.9.2 

1990) 
CSSB-90 Wood Shakes (Preservative Treated) based on Grading and Packing Rules for 

Treated Southern Pine Taper-Sawn Shakes of the Cedar Shake and Shingle 

Bureau 3609.9.3 

CSSB-93 Grading Rules for Wood Shakes and Shingles 3607.2.6, 3607.3.5 

Exterior and Interior Walls - Design and Application Manual for, 1989 

New Roof Coverings - Red Cedar Shingle and Shake Design and 

Application Manual for, 1989 

Red Cedar Shingles - Grading Rules for Certi-Grade, 1 984 

Wood Shakes - 

Grading Rules for Certi-Sawn Taper Sawn Red Cedar Shakes, 1981 
Grading Rules for Certi-Split Red Cedar Shakes, 1985 
Wood Shingles - 
Grading Rules for Certi-Grade Shingles. 1984 



cwc 



Canadian Wood Council 

1730 St. Laurent Boulevard - Suite 350 

Ottawa, Ontario, Canada K1G5L1 



Standard reference 
number 



Title 



Referenced in 

780 CMR Section 

number 



Canadian Dimension Lumber Data Book 3608.2.2 



DOC United States Department of Commerce 

National Institute of Standards and Technology 
Gaithersburg, MD 20899 

Standard reference Referenced in 

number 780 CMR Section number 

PS 1-95 Construction and Industrial Plywood 2306.4.6, 2307.1, 3606.10.1, 

3608.3.2.1, Table 3604.4.3.3 

PS 2-95 Performance Standard for Wood- Based Structural- Use Panels 2307.1, 3604.4.3.3, 

3605.3.2.1,3605.3.2.1.2, 
3606.10.1 3608.3.2.1 

PS 20-94 American Softwood Lumber Standard -with 1991 Amendments 2302.1, 3604.4.3.1, 

3605.2.1,3606.2.1,3608.2.1 

FF-1(CPSC 16 CFR, Standard for the Surface Flammability of Carpet and Rugs r 805.-3, 805.5 

Part 1630) -70 

DOTn U.S. Department of Transportation 

c/o Superintendent of Documents 
U.S. Government Printing Office 
Washington, D.C. 20402-9325 

Referenced in 
Standard reference number Title 780 CMR Section 

number 

49 CFR, Part 1 00-178 Specification for Transportation of Explosive and Other Dangerous Articles, 

& 179-199 -88 Shipoins Containers 307.2 



660 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

APPENDIX A 

EIA Electronics Industries Association 

2001 Pennsylvania Avenue, NW 
Washington, D.C. 20006 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



Structural Standards for Steel Antenna Towers and Antenna Supporting Structures 3108.4 



FM Factory Mutual Engineering Corporation 

Standards Laboratories Department 
1151 Boston Providence Turnpike 
Norwood, Massachusetts 02062 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



4450-90 Approval Standard for Class I Insulated Steel Deck Roofs -with Supplement (July 

1992) 1505.2.2, 2603.4.1.5 

4470-86 Approval Standard for Class 1 Roof Coverings -with Supplement 3 (August 1992) 1505.22, 1505.3.2 

4880-94 Test Procedure for Building Comer Fire Test 2603.8. 3603.17.3 



GA Gypsum Association 

103 Orrington Avenue, Suite 1210 
Evanston. IL 60201 



Standard reference Title Referenced in 

number 780 CMR Section 

number 

GA 253-93 Recommended Specification for the Application of Gypsum Seathing Table 3606.2.3(a) 



HPMA Hardwood Plywood Manufactures Association 

1825 Michael Faraday Drive, P.O. Box 2789 
Reston, Virginia 22090-2789 



Standard reference T . . Referenced in 

number 780 CMR Section number 



HP-83 Hardwood and Decorative Plywood 2307.1, 3607.2.5 

HP-SG-86 Structural Design Guide for Hardwood Plywood Wall Panels 2307.1, 3605.3.2.1, 

3606.10.1 



12/12/97 (Effective 8/28/97) 780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

MASSACHUSETTS, COMMONWEALTH OF 
CODE OF MASSACHUSETTS REGULATIONS (CMR) 

Specific numbers have been established by the Massachusetts Office of the Secretary of State to identify for reference purposes all 
rules and regulations promulgated by agencies of the Commonwealth of Massachusetts. These numbers are designated as "Code 
of Massachusetts Regulations" (CMR's). Although they may not be cited in the text of 780 CMR, the CMR s listed below are 
pertinent to building construction and design or maintenance. 

Board of State Examiners of Plumbers and Gas Fitters 
100 Cambridge Street 
Boston, MA 02202 



CMR number 



Title 



780 CMR Section number 



248 CMR 2.00 

248 CMR 4.00 - 7.00 



104 CMR 17.13 



115 CMR 7.00 -8.00 



Massachusetts State Plumbing Code 
Massachusetts Fuel Gas Code 

Department of Mental Health 
25 Staniford Street 
Boston, MA 02114 



201.3,408.4,418.3.4,421.7, 
602.4.3, 1212.7, 1813.5.3 



Department of Mental Retardation 
160 North Washington Street 
Boston, MA 02114 



Outdoor AdvertisingBoard 
100 Cambridge Street, Floor 20 
Boston, MA 02002 

Control and Restriction of Billboards, Signs and Other Advertising Devices 

Department og Environmental Protection 
One Winter Street 
Boston, MA 02208 



423.1.1,427.1.1.1 



105 CMR 130.000 
105 CMR 140.000 



105 CMR 151.000 
105 CMR 
105 CMR 400.000 
105 CMR 4 10.000 
105 CMR 420.000 
105 CMR 430.000 

105 CMR 435.000 
105 CMR 440.000 
105 CMR 590:000 



454 CMR 2.00 
454 CMR 10.00 
454 CMR 11.00 
454 CMR 12.00 
454 CMR 16.00 
454 CMR 19.00 



Department of Public Health 

150Tremont 

Boston, MA 02111 

Hospital Licensure 

Licensure of Clinics 

Designer's Guide (Bureau of Planning and Construction) Dispensaries and Clinics, December 21, 

1966- 
General Standards of Construction for Long Term Care Facilities in Massachusetts 
Intensive Care Unit Amendment, October 1, 1972 
State Sanitary Code Chapter I: General Administrative Procedures 
Minimum Standards of Fitness for Human Habitation (State Sanitary Code: Chapter II): 
Housing and Sanitation Standards for Farm Labor Camps (State Sanitary Code: Chapter III) 
Minimum Sanitation and Safety Standards for Recreational Camps for Children (State Sanitary Code: 

Chapter IV) 

Minimum Standards for Swimming Pools (State Sanitary Code: Chapter V) 421.7 

Minimum Standards for Developed Family Type Campgrounds (State Sanitary Code: Chapter VI) 
State Sanitary Code Chapter X - Minimum Sanitation Standards for Food Establishments 

Division of Industrial Safety 
100 Cambridge Street, 11th Floor 
Boston, MA 02202 

Toilets in Industrial Establishments 
Industrial Bulletin No. 4 

Construction Industry Rules and Regulations 
Industrial Bulletin No. 12 

Structural Painting Safety Code 
Industrial Bulletin No. 13 

Requirements for the Care of Employees Injured or Taken 111 in Industrial Establishments 
Industrial Bulletin No. 14 

Lighting Code for Factories, Workshops, Manufacturing, Mechanical and Mercantile Establishments 
Industrial Bulletin No. IS 

Window Cleaning 
Industrial Bulletin No. 21 



662 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

APPENDDC A 

Architectural Access Board 
Department of Public Safety 
One Ashburton Place, 13 th Floor 
Boston, MA 02108 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



52 1 CMR 1 .00 - 47.00 Architectural Access Board Regulations 40 1 .2, 42 1 .5.5, 424.4. 1 

Board of Boiler Rules 
Department of Public Safety 
One Ashburton Place, Roon 1301 
Boston, MA 02108 

522 CMR 2.00 Construction of Power Boilers 

522 CMR 3.00 Power Boilers, Power Reactor Vessels and Piping and Unfired Pressure Vessels 

as Used in Atomic Energy Installations 401.2 

522 CMR 4.00 Steam and Hot Water Boilers and Heat Storage Sources 401.2 

522 CMR 5.00 Heating Boilers 401.2 

522 CMR 6.00 Low Pressure Heating Boilers 401.2 

522 CMR 7.00 Air Tanks 401.2 

522 CMR 8.00 Air Tanks 401.2 

522 CMR 9.00 Refrigeration and Air Conditioning Systems 401.2 

522 CMR 10.00 Material Specifications 401.2 

522 CMR 1 1.00 Welding Specifications 401.2 

522 CMR 12.00 Fiberglass-reinforced Plastic Pressure Vessels 401.2 

Board of Elevator Regulations 
One Ashburton Place, Roon 1301 
Boston, MA 02108 

524 CMR 2.00 - 1 1 .00 Elevator and Escalator Regulations 403.8 

524 CMR 15.00-34.00 Elevator, Dumbwaiter, Escalator, and Moving Walk Regulations 403.8 

Board of Fire Prevention and Regulation 
1010 Commonwealth Avenue 
Boston, MA 02215 

527 CMR : 

527 CMR 3.00 Dry Cleaning and Dry Dyeing and the Keeping, Storage and 

Use of Cleaning and Dyeing Fluids 401.2 

527 CMR 4.00 Oil Burning Equipment 401.2 

527 CMR 5.00 Operation and Maintenance of Buildings or Other Structures 

Used as Garages, Service Stations and the Related Storage, 

Keeping and Use of Gasoline or Other Motor Fuel 401.2, 408.6 

527 CMR 6.00 Liquefied Petroleum Gas Containers and Systems 401.2, 418.3.3 

527 CMR 7.00 Manufacture and Handling of Plastics 401.2 

527 CMR 9.00 Tanks and Containers 401.2, 3103.1 

527 CMR 10.00 Prevention of Fire in Buildings and in or on Ships 401.2, 426.15 

527 CMR 12.00 1993 National Electrical Code (Amendments) 401.2, 403.9.1, 405.8, 405.9, 

410.4.5,414.5,416.11,416.14.6, 
416.15.2, 417.5.4, 421.7, 426.14. 
3102.6.3,3102.13.1,3107.7 
527 CMR 14.00 Flammable and Combustible Liquids, Flammible Solids or 

Flammable Gases 401.2, 417.1, 417.2.1, 417.3, 417.5, 

417.5.1, 417.5.2, 417.5.3, 417.6, 

417.6.1,417.6.3,418.3.2,418.1, 

418.2,418.2.1,418.3,418.3.1, 

418.4,418.5,705.2.1 

527 CMR 2 1 .00 Decorations, Curtains, Draperies, Blinds and Other Window 

Treatments 40 1 .2 

527 CMR 49.03 426.5, 426.6, 429.1, 429.1.6 

12/12/97 (Effective 8/28/97) 780 CMR - Sixth Edition 663 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 

NCMA National Concrete Masonry Association 

2302 Horse Pen Road, P.O. Box 781 
Herndon, VA 22070 

Standard reference T - . Referenced in 

number 780 CMR Section number 

NCMA Design and Construction of Plain and Reinforced Concrete Masonry Basement and 

TR68-A-75 Foundation Walls 3604.4.1 



NFPA National Fire Protection Association 

Batterymarch Park 
Quincy, Massachusetts 02269 

Standard reference _. . Referenced in 

number ''"' 780 CMR Section number 



10-94 Portable Fire Extinguishers 9202 

11-94 Low Expansion Foam And Combined Agent Systems 911.1,911.5 

1 1 A-94 Medium and High Expansion Foam Systems 91 1.1, 91 1.5 

12-93 Carbon Dioxide Extinguishing Systems 909.1, 909.5 

12A-92 Halon 1301 Fire Extinguishing Systems 912.1, 912.5 

12B-90 Halon 121 1 Fire Extinguishing Systems 912.1, 912.5 

13-96 Installation of Sprinkler Systems 412.7, 416.4, 426.3, 426.6, 

706.2,906.2.1,906.9.1, 

907.2.1, 917.7.3 
13D-94 Installation of Sprinkler Systems in One- and Two- Family Dwellings and 

Mobile Homes 423.6, 427.3.5, 906.2.3 

13 R-96 Installation of Sprinkler Systems in Residential Occupancies Up to Four Stories 

in Height 426.7, 906.22, 923.1 

14-95 Standpipe and Hose Systems 914.1, 914.3, 914.4, 914.5, 

914.6 

15-96 Water Spray Fixed Systems for Fire Protection 908.1, 908.4 

16-95 Deluge Foam- Water Sprinkler and Spray Systems 91 1.1, 91 1.5 

17-94 Dry Chemical Extinguishing System 910.1, 910.5 

17A-94 Wet Chemical Extinguishing Systems 913.1, 913.5 

20-96 Installation of Centrifugal Fire Pumps 924.1, 924.2, 924.3 

22-96 Standard for Water Tanks for Private Fire Protection 

24-95 Installation of Private Fire Service Mains 417.6.3, 906.9.1, 914.6.1 

25-95 Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems 901 .4 

30-96 Flammable and Combustible Liquids Code 307.8, 416.14, 418.3.2, 

419.2.3,426.3,426.5, 
426.11 

30A-96 Automotive and Marine Service Station Code 408.6, 417.6.6 

30B-94 Manufacture and Storage of Aerosol Products 426.3, 426. 12 

31-92 Oil Burning Equipment 3612.1 

32-96 Dry Cleaning Plants 418.3.4 

33-95 Spray Application Using Flammable and Combustible Materials 307.8, 419.1 

34-95 Dipping and Coating Processes Using Flammable or Combustible Liquids 307.8, 419.1 

40-94 Cellulose Nitrate Motion Picture Film 411.1 

50-96 Bulk Oxygen Systems at Consumer Sites 2810.1 

51-92 Oxygen-Fuel Gas Systems for Welding, Cutting and Allied Processes 2810.1 

54-92 National Fuel Gas Code 3612.1.1 

61-95 Prevention of Fire and Dust Explosions in Agricultural Food Products Facilities 

418.3.1 

65-93 Processing and Finishing of Aluminum 418.3.1 

69-92 Explosion Prevention Systems 417.5.12 

70-96 National Electrical Code (527 CMR 12.00: Massachusetts Amendments) 416.1 1, 416.14.6, 

416.152,602.4.4, 

14Q5.4.3,.3 102.6.3, 

3102.13.1,3107.7 

See also 527 CMR 12.00 

72-96 National Fire Alarm Code 403.6, 417.5.3, 426.14, 

427.3.7,427.3.8,428.12.1, 

428.16,906.5,917.1, 

917.7.1.1,917.6,917.7, 

917.7.3,917.8.1,917.9, 

917.10,918.1,9182.1, 

918.8,919.1,919.6,921.4, 

923.1,923.2, 923.2.1, 

923.2.2, 9232.3 
80-95 Fire Doors and Windows 716.2, 716.5, 

1017.4.4 
80A-96 Protection of Buildings from Exterior Fire Exposures 

664 780 CMR -Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 



APPENDIX A 



Standard reference 
number 



Referenced in 
780 CMR Section number 

Incinerators, Waste and Linen Handling Systems and Equipment 2807.1 

Installation of Air Conditioning and Ventilation Systems 

Installation of Warm Air Heating and Air Conditioning Systems 

Smoke Control Systems 

Smoke Management System in Malls, Atria and Alrge Areas 

Ventilation Control and Fire Protection of Commercial Cooking Operations 

Health Care Facilities 2809.1, 2809.2 

Life Safety Code 

Assembly Seating, Tents and Membrane Structures 3104.4 

Coal Preparation Plants 418.3.1 

Standard for Fixed Guideway Systems 

Chimney, Fireplace and Vents 3610.4 

General Storage 426.3, 426.6 

Rack Storage of Materials 507.1, 426.3, Table 922.2 

Storage of Rubber Tires 426.3, 426.6 

Safeguarding Construction, Alteration and Demolition Operations 903.1.5, 915.1, 914.7.2 

Standard Test Method for Potential Heat of Building Materials 3603.17.2.5 

Aircraft Hangers 426.3, 426.5, 426.6 

Construction and Protection of Airport Terminal Buildings 

Roof-top Heliport Construction and Protection 151 1.3 

Storage of Liquid and Solid Oxidizers 426.3, 426.5, 426.6 

Explosive Material Code 417.5.1 See also 527 CMR 

Access Highways, Tunnels, Bridges, Air Right Structures 

Manufacture of Aluminum or Magnesium Powder 418.3.1 

Prevention of Fire, and Dust Explosions in the Chemical, Dye, Pharmaceutical, 

and Plastics Industries 418.3.1 

Prevention of Sulfur Fires and Explosions 418.3.1 

Prevention of Fires and Explosions in Wood Processing and Woodworking 

Facilities 418.3.1 

Standard Methods of Fire Tests for Flame Resistant Textiles and Films 807.2, 807.2.2, 

3102.6.4.2,3103.3.2, 
3104.5,3105.3 

Identification of the Fire Hazards of Materials 4162, 416.15.1 

Installation of Water Mist Fire Protection Systems 

Pulverized Fuel Systems 418.3.1 



82-94 

90A-96 

90B-96 

92A-96 

92B-95 

96-96 

99-96 

104-94 

102-95 

120-94 

130-95 

211 

231-95 

231C-95 

231D-94 

241-96 

259-87 

409-95 

416-93 

418-95 

430-95 

495-96 

502-96 

651-93 

654-94 

655-93 
664-93 



704-96 
750-96 
8503-96 



NFoPA 

(AFPA) 



American Forest and Paper Association* 
1250 Connecticut Avenue, N.W./ Suite 200 
Washington, D.C. 20036 



Standard reference 
number 



Title 



Referenced in 
780 CMR Section number 



NDS-91 National Design Specification for Wood Construction -with 1991 

Supplement; Design Values for Wood Construction 1801.1, 2303.1, 2304.1, 

2305.14.1,2305.15,2306.4, 

2306.4.5.1, 2306.4.5.2, 2306.4.6, 

2306.4.6.1.1,2306.4.6.2.1, 

2306.4.7.1.1,2306.4.72.1, 

2312.1,2312.4,2313.3.1, 

2313.3.2 

TR7-87 Basic Requirements for Permanent Wood Foundation System 1808.3. 1813.3.2311.3.3 

*The National Forest Products Association (NFoPA) has changed their name to the American Forest and Paper Association 
(AFPA). The referenced standard in this code may be identified with the designation AFPA. 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



665 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



RCSC 



Standard reference 
number 



Research Council On Structural Connections 

c/o American Institute of Steel Construction, Inc. 

Suite 3100 

One East Wacker Drive 

Chicago, IL 60601-2001 



Referenced in 

780 CMR Section 

number 



RCSC-85 
RCSC-88 



Specifications for Structural Joints Using A325 or A490 Bolts 
Specification for Load and Resistance Design 



RMA Rubber Manufacturers Association 

1200 K Street, N.W. 
Washington, D.C. 20005 

Referenced in 
Title 780 CMR Section 

number 

RP-1- 90 Minimum Requirements forNon- Reinforced Black EPDM Rubber Sheets 1507.3.2 

RP-2-90 Minimum Requirements for Fabric- Reinforced Black EPDM Rubber Sheets 1507.3.2 

RP-3-85 Minimum Requirements for Fabric- Reinforced Black Polychlorprene Rubber Sheets 1 507.3.2 



Standard reference 
number 



SJI 



Steel Joist Institute 

1205 48th Avenue North 

Suite A 

Myrtle Beach, South Carolina 29577 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



Standard Specifications, Load Tables and Weight Tables for Steel Joists and Joist Girders 



SMACNA Sheet Metal and Air Conditioning Contractors 

National Association, Inc. 
4201 Lafayette Center Drive 
Chantilly, VA 22021 



Standard reference 
number 



Title 



Referenced in 

780 CMR Section 

number 



Installation Standards for Residential Heating and Air Conditioning Svstems 3619.1.3.1 



TFS 



Texas Forest Service 
Forest Products Laboratory 
P.O. Box 310 
Lufkin, Texas 75902-0310 



Standard 
reference 
number 



Referenced in 

780 CMR 
-Section number 



Grading Rules for Preservative Treated Southern Yellow Pine Tapersawn Shakes 1507.2.9 



666 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 



APPENDIX A 



TMS 



The Masonry Council 
Suite B 

2619 Spruce Street 
Boulder, CO 80302-3808 



Standard reference 
number 



Referenced in 
780 CMR Section number 



TMS 402/AC1 530/ Building Code Requirements for Masonry Structures 
ASCE 5-95 



707.3, Table 1705.7, 1812.3.2, 

Table 1812.3.2, 2101.1.1, 2104.1, 

2104.2,2104.3, 2104.4.1,2104.4.2, 

2106.3.1 



TMS 602/ACI 
530. 1/ASCE 6-95 



Specifications for Masonry Structures Table 1705.7, 2104.2, 21 12.1.1 



TPI 



Truss Plate Institute Inc. 
Suite 200 

583 D'Onofrio Drive 
Madison, Wisconsin 53719 



Standard reference _. . Referenced in 

number 780 CMR Section number 

PCT-80 Design Specification for Metal Plate Connected Parallel Chord Wood Trusses 

2305.14.1,2313.3.2, 

3605.2.10,3608.2.11 

TPI 1-95 National Design Standard for Metal Plate Connected Wood Truss Construction 2305.15 , 2313.3.1, 
3605.2.10, 3608.2.1 1 

TPI BWT-76 Bracing Wood Trusses: Commentary and Recommendations 3605.2.10, 3608.2.1 1 

TPI QST-89 Quality Standard for Metal Plate Connected Wood Trusses 3605.2.10. 3608.2.1 1 



UL 



Underwriters Laboratories, Inc. 

333 Pfingsten Road 
Northbrook, Illinois 60062 



Standard reference 
number 



Referenced in 
Title 780 CMR Section 

number 

Standard for Safety Tin- Clad Fire -with Revisions through May 1985 716.2 

Standard for Safety Sliding Hardware for Standard, Horizontally Mounted Tin-Clad Fire 

Doors -with Revisions through October 1984 716.2 

Standard for Safety Swinging Hardware for Standard Tin-Clad Fire Doors Mounted 

Singly and in Pairs -with Revisions through October 1984 716.2 

Material for Built-up Roof Coverings (Revised 1989) 3609.7.2 

Standard for Safety Chimneys, Factory Built, Residential Type and Building Heating 

Appliance -with Revisions through February 1989 720.6.4, 3612.2 

Standard for Safety Factory-Built Fireplaces -with Revisions through June, 1992. 720.6.4 

Factory-Made Air Ducts and Air Connectors (Revised November, 1990) 3619.1.2 

Closure System for Use with Rigid Air Ducts and Connectors 3619.1.2 

Standard for Safety Single and Multiple Station Smoke Detectors -with Revisions 

through February 1989 409.5.1 

Standard for Safety Smoke Detectors for Fire Protective Signaling Systems -with 

Revisions through May 1989 409.5.1 

Gas Vents 3612.2 

Fire Dampers _....... 717.1 

Heat Pumps (Revised December, 1987) 3614.2.1 

Standard for Safety Tests for Uplift Resistance of Roof Assemblies -with Revisions 

through December 1989 1505.2.2 

Low-Temperature Venting Systems, Type L 3612.2 

Tests for Fire Resistance of Roof Covering Material (Revised, 1989) 3609.1.3 

Standard for Safety Test for Flame Propagation and Smoke-Density Values for Electrical 

and Optical-Fiber Cables used in Spaces Transporting Environmental Air 2805.2.5 

Standard for Safety Wind Resistance of Prepared Roof Covering Materials -with 

Revisions through July, 1981 1505.2.3 

Outline of Investigation for Insulated Wall Construction 3603.17.3 

Electric Central Air Heating Equipment (Revised January, 1988) 3614.1.12 

Standard for Safety Fire Test of Roof Deck Constructions 2603.4.1.5 

Fire Test of Interior Finish Material -with Revisions through March 1991 2603.S, 3603.17.3 

Chimney Liners (Revised November, 1989) 3610.2.14 



10A-93 
14B-93 



55A-83 
103-94 

127-88 
181-90 
181A-90 
217-93 

268-89 

441-86 
555-95 
559-85 
580-94 

641-86 
790-83 
910-95 

997-81 

1040-71 
1096-86 
1256-85 
1715-94 
1777-88 



12/12/97 (Effective 8/28/97) 



780 CMR - Sixth Edition 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 
THE MASSACHUSETTS STATE BUILDING CODE 



Standard reference 
number 



Referenced in 
Title 780 CMR Section 

number 

Outline of Proposed Investigation for Insulated Wall Construction 2603.8 

Standard for Safety Fire Test Pneumatic Tubing for Flame and Smoke Characteristics - 

with Revisions through April 1991 2805.2.6 

Fire Tests of Plastic Sprinkler Pipe for Flame and Smoke Characteristics 2805.2.1 



1040-89 

1820-94 



use 



United States Code 
c/o Superintendent of Documents 
U.S. Government Printing Office 
Washington, D.C. 20402-9325 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



Title 18; 

Chapter 40-70 



Importation, Manufacture, Distribution and Storage of Explosive Materials 307.2 



WWPA 



Western Lumber 



Standard reference 
number 



Referenced in 

780 CMR Section 

number 



Western Lumber Span Tables for Floor and Ceiling Joists and Roof Rafters 3608.2.2 



668 



780 CMR -Sixth Edition 



12/12/97 (Effective 8/28/97) 



780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

ENERGY PROVISIONS 



of rain and snow, sized by the criteria in 780 CMR 
1210. 

J7.5.1.1 With a ceiling vapor barrier installed: 

Attics with a ceiling vapor barrier must be 
ventilated with screened openings of at least one 
square foot of free vent area for each 300 square 
feet of ceiling area. 

J7.5.1.2 Without a ceiling vapor barrier 
installed: Attics without a ceiling vapor barrier 
installed shall be ventilated with screened 
openings of at least one square foot of free vent 
area for each 150 square feet of ceiling area. 

J7.5.1.3 Eave vents: When eave vents are 
installed, adequate baffling shall be provided to 
deflect the incoming air above the surface of the 
insulation. Baffles shall be installed prior to 
insulation, and shall be installed over the exterior 
wall at an angle to provide a two inch minimum 
clearance under the roof deck for upward flow of 
ventilation air to the fixed vents in the upper 
portion of the attic. 

J7.5.1.4 Ridge or gable vent: When eave vents 
are installed, the ridge or gable vent must be at 
least three feet above the level of the eave vents. 

J7.5.2 Underfloor space ventilation: 

J7.5.2.1 With a ground vapor barrier: 

Underfloor spaces with an approved vapor barrier 
installed on the ground surface shall be ventilated 
with screened openings of one square foot of vent 
area for each 1,500 square feet of crawl space. 
Vents shall be positioned to provide cross 
ventilation. See 780 CMR 1210. 

J8.0 COMPONENT DESIGN 
J8.1 Scope: All low rise residential buildings that 
are heated or mechanically cooled shall be 
constructed so as to provide the required thermal 
performance of the various components listed in 
780 CMR J8.0, J9.0 and 780 CMR 1310 through 
1312, and to provide the lighting switching 
requirements of 780 CMR 1313.2.2.1. 

J8.2 Thermal Performance: Information on 
thermal properties, performance of building 
envelope sections and components, and heat transfer 
shall be obtained from laboratory or field test 
measurements, or when information is not available 
from these sources, then such information may be 
obtained from the ASHRAE Handbook, 1993 of 
Fundamentals as listed in Appendix A. 

When laboratory or field test measurements are 
used, they shall be conducted in accordance with 
ASTM standards: 

1. C-177-85/R1993, Standard Test Method for 
Steady-State Thermal Transmission Properties by 
Means of the Guarded Hot Plate, 

2. C-5 18-91, Steady-State Thermal Transmission 
Properties by Means of the Heat Flow Meter, 



3. C-236-89/R1993, Standard Test Method for 
Steady-State Thermal Performance of Building 
Assemblies by Means of a Guarded Hot Box, or 

4. C-976-90, Thermal Performance of Building 
Assemblies by Means of a Calibrated Hot Box, 
each as listed in Appendix A. 

To determine thermal conductance through window 
assemblies the following ASTM, American 
Architectural Manufacturers Association (AAMA), 
or National Fenestration Rating Council (NFRC) 
standards shall be used. 

1. AAMA 1503.1-1988, Test Method of Thermal 
Transmittance of Windows, Doors and Glazed 
Wall Sections, 

2. ASTM C-236-89/R1993, Standard Test 
Method for Steady-State Thermal Performance of 
Building Assemblies by Means of Guarded Hot 
Box, 

3. ASTM C-976-90, Thermal Performance of 
Building Assemblies by Means of a Calibrated 
Hot Box, or 

4. NFRC 100-91 Procedure for Determining 
Fenestration Product Thermal Properties, each as 
listed in Appendix A. 

When using any of the four test procedures above, a 
15 mile per hour wind shall be applied perpendicular 
to the glazing and applied in other directions as 
required by the subject standard.. 

J83 Gross wall area: For the purposes of Appen- 
dix J, the gross area of exterior walls consists of all 
opaque wall areas, including foundation walls, areas 
between floor spandrels, peripheral edges of floors, 
window areas including sash, and door areas, where 
such surfaces enclose a heated or mechanically 
cooled space including interstitial areas between two 
such spaces, but excluding vents, grills and pipes. 

J8.4 Roof assembly: For the purpose of Appendix J, 
a roof assembly shall be considered as all 
components of the roof/ceiling envelope through 
which heat flows, thereby creating a building 
transmission heat loss or gain, where such assembly 
encloses a heated or mechanically cooled space. 

J8.4.1 Gross roof area: The gross area of a roof 
assembly consists of the total interior surface of 
such assembly, including skylights, exposed to the 
heated or mechanically cooled space. 

J8.4.2 Ceiling plenums: Where air ceiling 
plenums are employed, the roof/ceiling assembly 
shall: 

1. for thermal transmittance purposes not 
include the ceiling proper nor the plenum space 
as part of the assembly; and 

2. for gross area purposes be based upon the 
interior face of the upper plenum surface. 

J8.5 Swimming pools: All pool enclosures shall be 
designed in accordance with the 1993 edition of the 



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ASHRAE Applications Handbook, as listed in 
Appendix A. 

Such pool enclosures shall have a maximum 
overall (roof/gables/sidewalls) U value of 0.25. 

J9.0 EXTERIOR ENVELOPE 

REQUIREMENTS FOR LOW RISE 

RESIDENTIAL BUILDINGS 

J9.1 Criteria for low rise residential buildings: 

The following requirements shall apply to all 
buildings and structures or portions thereof in use 
groups R-l, R-2, R-3, and R-4 (hotels, multi-family, 
and one- and two-family) that are heated or 
mechanically cooled and not more than three stories 
high. 

1. All buildings in these use groups shall 
conform to the thermal transmittance values in 



Table J9.1 or shall be designed to satisfy the 
requirements of 780 CMR J9.3 or shall be 
designed to satisfy the requirements of 780 CMR 
1315. 

2. An overall Uo value of 0.167 for structures 
heated by oil, gas or heat pumps, or an overall Uo 
of 0.105 for structures heated by electric 
resistance may be used for the combination of 
walls, doors and windows containing heated space 
in lieu of the separate U values listed for walls, 
doors and windows. The overall Uo of 0.167 or 
0.105 shall be used when the windows exceed 
15% of the gross exterior wall area. 

3. For purposes of 780 CMR J9.0 only, framing 
members shall not be included in the calculations 
ofR and U values. 



TABLE J9.1 

MAXIMUM U VALUES AND MINIMUM R VALUES OF WALLS, 

ROOF/CEILING, AND FLOORS 

FOR RESIDENTIAL BUILDINGS OF J9.1 



ELEMENT 


DESCRIPTION 


U VALUE 


TOTAL 

R 
VALUE 


NOTES 


Walls 


All wall construction containing 
heated or mechanically cooled space 


0.08 


12.5 


1 


Electric resistance heating 


0.05 


20.0 


1 


Foundation Walls 
Including Band Joist 


Containing heated or mechanically 
cooled space 


0.08 


12.5 


- 


Containing unheated space 


0.08 


12.5 


4 


Roof/Ceiling 

Assembly 


All roof construction containing 
heated or mechanically cooled space 


0.033 


30.0 


- 


Windows 


All construction enclosing heated or 
mechanically cooled space 


0.65 


1.54 


2 


Electric resistance heating 


0.40 


2.50 


6.7 


Doors 


All construction enclosing heated or 
mechanically cooled space 


0.40 


2.50 


- 


Floors 


Floor sections over areas exposed to 
outside air or unheated space 


0.05 


20.0 


3 


Slab on grade beneath conditioned 
space 


- 


10.0 


5 



Note 1: These values may be used when the doors and windows do not exceed 1 5% of the gross exterior wall area. 

When doors and windows exceed 15% of the gross wall area, see 780 CMR J9.1, item 2. 

Note 2: Double glazed primary windows or single glaze primary windows with storm windows will satisfy the 

required U value of 0.65. 

Note 3: Insulation may be omitted from floors over unheated areas when foundation walls are providedwith a U 

value of 0.08. 

Note 4: The U value requirement of zero point zero eight for foundation walls may be omitted when floors over 

unheated spaces are provided with a U value of 0.05. 

Note 5: R value for perimeter insulation (see 780 CMR J6.4.6). 

Note 6: When doors and windows do not exceed 1 5% of the gross exterior wall area, this value may be used. When 

doors and windows do not exceed 10% of the gross exterior wall area, windows having a U value of 0.65 (R value of 

1.54) may be used. When windows and doors exceed 15% of the gross exterior wall area, see 780 CMR J9.1, item 2. 

Note 7: Double glazed primary windows with storm windows or most triple glazed primary windows or double 

glazed low emissivity primary windows will satisfy the required U value of 0.40. 



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APPENDIX K 



FLOOR PROTECTOR THERMAL CONDUCTIVITY CALCULATIONS 

(Reference 780 CMR 3610.7.1 and 3610.6.7.1.1) 



OVERVIEW 

Floor protection requirements for heat producing 
appliances are typically included as part of the 
tested/listed installation criteria for such appliances. 

Such floor protection, listed as a thermal 
conductivity factor is often developed utilizing 
NFPA SUBJECT 1618, "OUTLINE OF 
INVESTIGATION FOR WALL PROTECTORS, 
FLOOR PROTECTORS, AND HEARTH 
EXTENSIONS". (Note that an NFPA SUBJECT is 
not treated nor maintained in the same manner as an 
NFPA STANDARD). 

When floor protection is developed utilizing NFPA 
SUBJECT 1 61 8, or developed via "good Engineer- 
ing Practice", such methodology will typically estab- 
lish floor protection based on % inch millboard. 

As the thermal conductivity of such millboard can 
vary from manufacturer to manufacturer, it will be 
necessary to obtain the thermal conductivity value 
from a specific manufacturer for a specific millboard 
product. 

Typical thermal conductivity values can range from: 
k = 0.21 (Btu) (inch) / (foot 2 ) (hour) (°F) 

to 
k = 0.84 (Btu) (inch) / (foot 2 ) (hour) (°F) 

Thus the necessity for product specific thermal 

conductivity. 

Note that the lower the algebraic value of "k", the 
lower the thermal conductivity and the less heat per 
given time that is transferred across the floor 
protector. 

Note that in the following discussions it is necessary 
to maintain consistent dimensions - i.e.; in dealing 
with the thickness of materials, do not mix feet with 
inches, but rather keep all dimensions in inches. 

COMPLIANCE 

If the manufacturer of the appliance specifies an 
acceptable material and thickness for floor 
protection it is necessary, utilizing that specific 
material with specific thermal conductivity, k, to 
meet or exceed the thickness specified in order to 
assure compliance with the listed floor protection 
requirements of the appliance. 

ESTABLISHING EQUIVALENCY 

If it is determined that another material of different 
thermal conductivity is desired to be utilized for 
floor protection (i.e., perhaps for aesthetic reasons or 



in order to minimize the thickness of the floor 
protector) and noting that the thermal conductivity, 
k, is linear as a function of thickness (for a given 
single material) then: 

k,/t,=k 2 /t 2 , 

where: 
k = thermal conductivity in 

(Btu) (inch) / (foot 2 ) (hour) (°F) and 
t = thickness in inches 

and therefore knowing any three of the variables of 
k and t allows one to solve for the remaining 
variable; i.e., : 
Knowing k,, t] and t 2 , one can solve for k 2 : 
k 2 =(k,)(t 2 )/(t,) 

Knowing k ls t| and k 2 , one can solve for t 2 : 
t 2 = (k 2 )(t,)/(k 1 ) 

COMPOSITE FLOOR PROTECTOR 
ASSEMBLIES 

When an assembly consists of more than one 
material, the assembly is defined as a composite 
"material". 

When a floor protector is constructed of more than 
one material; i.e., some form of backer board with 
decorative tile over, it is helpful to first establish the 
thermal resistance, r, of each material as thermal 
resistances may be directly added together and then 
convert the resulting total R to an equivalent 
thermal conductivity. 

r = (foot 2 ) (hour) (°F)/(Btu) (inch) and; 

R = (r) (t) 

where r is for a particular material in the composite 
and t is the thickness of that particular material. 

Thus for the two-material example of backer board 
plus decorative tile, 



R tntal ~~ R 



total "■ backer Board "■ decorative tile 



+ R, 



and; 



"" backer board \ r backer board/ v ' backer board/ 



and; 



Rtile ( r tile) ( l tile ) 



RELATIONSHIP BETWEEN k AND R 

By definition: 

R = ( 1/k) ( t ) for each distinct material 



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THE MASSACHUSETTS STATE BUILDING CODE 



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762 780 CMR - Sixth Edition 2/7/97 (Effective 2/28/97) 



APPENDIX L 



SCHEDULE OF FEES 



L 1.0 Fee Schedule: In accordance with the 
authority conferred by M.G.L. c 143, § 94, the State 
Board of Building Regulations and Standards hereby 
establishes the following fees as specified in Table 
L-l. 

Exceptions: 

1. Fees for projects which are under the 
jurisdiction of a city or town shall be as duly 



established by said city or town in accordance 
with 780 CMR 114.0. 

2. Fees for construction related licenses issued 
by a city or town shall be in accordance with fee 
schedules established by said city or town. 

3. Fees for administrative appeals hearings in 
cities of towns having duly established building 
code appeals boards in accordance with 780 CMR 
122 shall be as established by said city or town. 



Table L-l 



Fee Item 


Period of 

Certification or 

Licensure 


Fee 

(Dollars) 


780 or M.G.L. 

Authority or 

Reference 


Concrete Testing Laboratory 


780 CMR Rl 


Initial license 

Renewal 


One year 
One year 


50.00 
50.00 


780 CMR Rl. 1.8 
780 CMR Rl. 1.10 


Concrete Test Technician - Class A 


780 CMR R2 




One year 
One year 
Per exam 


50.00 
50.00 
Notel 


780 CMR R2. 1.9 
780CMRR2.1.11 
780 CMR R2. 1.7 


Renewal 

Examination 


Manufactured Buildings 


780 CMR R3 


Manufacturer - initial certification (per system) 


One year 
One year 
Per label 
Per label 
Per label 
One year 
One year 


1200.00 
650.00 
50.00 

2.00 

2.00 

500.00 

500.00 


780 CMR R3. 18.1 
780CMRR3.18.3 
780CMRR3.18.4 
780 CMR R3. 18.4 
780 CMR R3. 18.4 
780 CMR R3. 18.2 
780 CMR R3. 18.3 


Labels per unit 

Replacement label 








Registration of Producers of Native Lumber 






780 CMR R4 




Two years 
Two years 


25.00 
25.00 


780 CMR R4. 1.4 
780 CMR R4. 1.5 






Construction Supervisor License (CSL) 


780 CMR R5 


Unrestricted license (any building enclosing up to 35,000 
cubic feet of space) 


Three years 
Two years 
Per exam 

Three years 
Two years 
Per exam 

Three years 
Two years 
Per exam 


150.00 
100.00 
Note 1 

150.00 
100.00 
Note 1 

150.00 
100.00 
25.00 


780 CMR R5.2.5 
780 CMR R5.2.5 
780 CMR R5.2.5 

780 CMR R5.2.5 
780 CMR R5 .2.5 
780 CMR R5.2.5 

780CMRR5.2.5 
780 CMR R5.2.5 
780 CMR R5.2.5 




Restricted License (one and two family dwellings) 




Restricted License - Masonry only 


Renewal 



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THE MASSACHUSETTS STATE BUILDING CODE 



Fee Item 


Period of 

Certification or 

Licensure 


Fee 

(Dollars) 


780 or M.G.L. 

Authority or 

Reference 


Home Improvement Contractor Registration 


M.G.L. c 142A & 
780 CMR R6 




Two years 
Two years 
Two years 
Two years 

Note 2 
Note 2 
Note 2 
Note 2 


No fee 
100.00 
No fee 
100.00 

100.00 
200.00 
300.00 
500.00 








Guaranty Fund Payment (upon initial registration - all 
applicants) 


4-10 employees 

1 1-30 employees 




Certification of Building Commissioners, Inspectors of 
Buildings and Local Inspectors. 


M.G.L. c 143 § 3 & 
780 CMR R7 






no fee 
Note 1 

Reserved 






Continuing education programs provided directly by 




State Building Code Appeal Board 


M.G.L. c 143 § 100 


Administrative Hearing 


Per hearing 


150.00 


780 CMR 122.3.1 


Structural Peer Review Advisory Board 


780 CMR 125 


Mediation Hearing 




No fee 


780 CMR 125.3 


Building Permits and Construction Inspection for State 

Projects (except Massachusetts Bay Transportation Authority 

Projects) subject to 780 CMR and under the jurisdiction of 

the Department of Public Safety, Division of Inspections. 


M.G.L. c 143 §§ 93 & 

94 

M.G.L. c 143 § 3A 


Plans examination, construction inspection, issuance of building 
permit and certificate of and occupancy 

Note: This fee structure shall be deemed to include, but not be 
limited to, electrical, plumbing mechanical and fire protection 
work. Fees shall not be permitted to be levied by local 
jurisdictions. 


Per building or 
structure. 


0.001 times 

the contract 

amount 

(Note 3) 


M.G.L. c 143 §§ 93 & 

94 


Massachusetts Bav Transportation Authority Projects 


M.G.L. cl61A§ 18 


Massachusetts Bay Transportation Authority Projects subject to 
780 CMR. 




No fee 


M.G.L. c 161A§ 18 




Periodic Inspections of Existing Buildings under the 

jurisdiction of the Division of Inspections, Department of 

Public Safety 


780 CMR 106.5 & 
M.G.L. c 111 


Hospitals and Clinics (certificate of inspection) 
First 100 beds 


Two years 
Two years 

Two years 


50.00 
10.00 

50.00 


M.G.L.c 11 1 § SI 
M.G.L. c 111 5 71 


Each additional 25 beds 


Infirmaries; Convalescent Homes; Nursing Homes; Charitable 
Homes for the Aged; Rest Homes; Intermediate Care Facilities 
for the Mentally Retarded, (certificate of inspection) 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

SCHEDULE OF FEES 



Fee Item 


Period of 

Certification or 

Licensure 


Fee 
(Dollars) 


780 or M.G.L. 

Authority or 

Reference 


Periodic Inspections of all other existing buildings. 


M.G.L. c 143 § 94 


Periodic inspections of specified use groups as 

specified by 780 CMR 106.5 and Table 106 


As specified by 

780CMR Table 

106 


As specified 
by 780CMR 
Table 106 


780 CMR 106.5 and 
Table 106 





Notes: 

1 . Examination fees established by examining institution. 

2. M.G.L. c 142 A § 1 1 provides that additional payments into the guaranty fund may be required if the fund 
administrator determines that the amount of the fund is insufficient to maintain it at a level commensurate 
with claims made against said fund. 

3. Contract amount, for the basis calculation of permit fees, shall include the entire scope of work of the 
project and shall include all incidental constructions. Contract amount, for the basis of calculation of permit 
fees, shall not be deemed to include design fees or any other professional fees associated with construction 
observation or supervision or construction management. 



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THE MASSACHUSETTS STATE BUILDING CODE 

NON-TEXT PAGE 



7614 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR Rl 



CONCRETE TESTING LABORATORIES LICENSING 



780CMRR1.1 ADMINISTRATION 
Rl.1.1 Title As authorized by M.G.L. c. 143, §§ 93 
through 100, and in accordance with 780 CMR 
123.0, establishing the Construction Materials Safety 
Board,780 CMR Rl is adopted for Licensing of 
Concrete Testing Laboratories. 

Rl.1.2 Definitions Unless otherwise expressly 
stated in 780 CMR, the following terms shall, for the 
purpose of 780 CMR Rl, have the meaning 
indicated in 780 CMR Rl .2: 

Accredited Laboratory: A laboratory which has 
been licensed in accordance with 780 CMR Rl 
by the BBRS. 

BBRS: State Board of Building Regulations and 
Standards 

Board: Construction Materials Safety Board 
(CMSB). 

Branch Laboratories: A branch of a Testing 
Laboratory physically removed from the 
location of the headquarters or main testing 
facility of the Testing laboratory. 

Laboratories: Testing laboratory, branch 
laboratory, and project laboratory. 

Person: Individual, partnership, corporation, 
trust, joint venture, etc. 

Pre-Qualifying Agency: Construction Materials 
Safety Board (CMSB). 

Project Laboratory: A temporary on-site 
facility providing concrete testing services for 
a specific project under the direction of a 
testing or branch laboratory licensed by the 
Commonwealth of Massachusetts. 

Testing Agency: National Institute of Standards 
and Technology (NIST), Cement and Concrete 
Reference Laboratory (CCRL), the Army 
Corps of Engineers, or other agency designated 
by the BBRS. 

Testing Laboratory: A proprietorship, 
corporation, partnership or agency which 
conforms to the requirements of ASTM E 329- 
72 as modified in 780 CMR Rl . 

R1.13 Licensing All laboratories defined by 
780 CMR Rl.1.2 as Testing Laboratories, Branch 
Laboratories and Project Laboratories which are 
engaged in the testing of concrete and concrete 
materials for use in buildings and structures subject 
to control according to the provisions of 780 CMR 



116 will be licensed by the BBRS in accordance 
with 780 CMR Rl. 

Rl.1.4 Application for Licensing Each laboratory 
desiring to obtain such license shall make 
application to the BBRS upon such form and in such 
manner as the BBRS shall prescribe and shall 
furnish evidence satisfactory to the BBRS that the 
laboratory equipment meets the requirements of 
780 CMR Rl .2 and its management personnel are 
qualified in accordance with 780 CMR Rl .4 and .5. 
Such application shall also include payment of the 
licensing fee set forth in 780 CMR Rl.1.8. 

Rl.1.5 Pre-qualifying Agency The BBRS hereby 
designates the Construction Materials Safety Board 
as its Pre-Qualifying Agency, provided, however, 
that the BBRS may revoke such designation at any 
time, and may designate any other agency or 
agencies which it deems qualified, from time to 
time, to act as its Pre-Qualifying Agency. The Pre- 
Qualifying Agency shall examine, or cause to be 
examined, the evaluation performed by the Testing 
Agency and the personnel on each Concrete Testing 
Laboratory application and make its 
recommendation to the BBRS regarding such 
license. 

Rl.1.6 Testing Agency The BBRS hereby 
designates the Cement and Concrete Reference 
Laboratory of the National Institute of Standards and 
the Army Corps of Engineers as the agencies to 
examine and evaluate all laboratories desiring to be 
licensed in the practice of concrete testing, provided, 
however, that the BBRS may revoke such 
designation at any time, and may designate any other 
agency or agencies which it deems qualified, from 
time to time, to act as its Testing Agency. 

Rl.1.7 Notification of Testing and Testing 
Results The Testing Agency shall notify the 
applicant of the date for evaluation and shall provide 
the audited laboratory with a report of audit findings. 

Note: Unless specific permission has been granted 
by the BBRS, accredited laboratories must have 
the capability to test both concrete and concrete 
aggregate. 

Rl. 1.7.1 Audit findings response: The audited 
laboratory shall request that the testing agency 
forward a copy of the audit report to the BBRS. 

The audited laboratory shall prepare formal 
responses to each and all audit findings and issue 
such response report to the BBRS for reviewt. 
(Also see 780 CMR Rl .3 



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Rl.1.8 Licensing Fee The fee for licensing shall be 
$150.00 per annum or in accordance with the fee 
schedule established by the BBRS from time to time. 

Rl.1.9 Number and Classification Each 
laboratory so licensed by the BBRS shall be issued 
a number and classification. 

Rl.1.10 Renewals Commencing January 1, 1978, 
all licenses issued shall expire on December 3 1 of 
the year issued. Within 60 days before the 
expiration date of any such license, the 
Administrator of the BBRS shall forward to each 
laboratory so licensed an application form for 
renewal. Said renewals shall be returned to the 
BBRS by December 31. The said Administrator, 
upon receipt of the completed form and fee, shall 
renew the license for a period of one year or notify 
such applicant of the BBRS's refusal with reasons 
thereof. 

Rl.1.11 Penalties Any such person and/or 
laboratory who fails to comply with the 
requirements of 780 CMR Rl or who files a false 
report shall be subject to the penalties and actions as 
prescribed in 780 CMR 118. 

780 CMR R1.2 LABORATORY LICENSING 

REQUIREMENTS 
Rl.2.1 ASTM Testing Requirements Except as 
modified in 780 CMR Rl, all testing laboratories 
including branch laboratories shall conform to 
Sections 5 and 6 of the ASTM E 329-72 standard 
requirements for testing of concrete and its 
constituent materials. 

Exception: The following sections of ASTM E 
329-72 shall not apply: 

Sections 2.2; 2.3; 2.7; 3.2.7; 3.3; 3.4 C360 of 

6.2; 7; 8; 9 and 10. 

Rl.2.2 ASTM Equipment and Personnel 
Requirements: All laboratories subject to 
780 CMR Rl shall be approved and licensed in 
accordance with the ASTM E 329-72 standard for 
the performance of those functions recommended in 
standard ASTM E 329-72, for equipment and 
personnel, as modified in 780 CMR Rl . 

780 CMR RL3 PRE-QUAIIF1CATION 
REQUIREMENTS FOR LABORATORIES 
Rl.3.1 Evaluation: 

a. Testing and branch laboratories subject to 
780 CMR Rl shall be examined and evaluated, 
upon notification from the BBRS, by a testing 
agency designated by the BBRS. The interval 
between such examination and evaluation shall 
not exceed three years. 

b. Project laboratory equipment which is used in 
the testing of concrete materials for use in 
buildings and structures subject to the provisions 



of 780 CMR shall conform to the requirements of 
ASTM E 329 as modified by 780 CMR Rl .2. 

c. Reports of evaluations by the testing agency 
shall be filed with the BBRS within ten days of 
receipt of the report by the laboratory, unless a 
waiver is granted by the laboratory to have the 
report sent directly to the BBRS by the testing 
agency. 

d. Laboratory deficiencies cited in the report of 
the testing agency shall be corrected within 30 
days of the date of issue of the report and shall be 
so certified by an affidavit submitted by the 
laboratory on a form supplied by the BBRS. 

R13.2 Review of Deficiencies: Laboratories which 
fail to meet the requirements of 780 CMR Rl.3.1 
items c. and d. shall be subject to review and 
revocation of their license by the BBRS. 

R13.3 Testing Machines: Compression testing 
machines used for testing materials subject to 
780 CMR Rl shall be calibrated and verified, with 
equipment traceable to the National Institute of 
Standards and Technology (NIST), at least annually 
or as required by the BBRS, and the results 
submitted to the BBRS. 

780CMRR1.4 PERSONNEL 

The management and supervision of each laboratory 
subject to 780 CMR Rl shall be in accordance with 
the following requirements: 

Rl.4.1 Required: Each accredited licensed 
Concrete Testing Laboratory must have an 
individual approved by the BBRS in each of three 
distinctly different categories: Director of Testing 
Services, Supervisory Laboratory Technician and 
Supervisory Field Technician. An individual may 
fill more than one position at the particular 
laboratory if he meets all the qualifications for each 
position, but he may not fill positions concurrently 
at a separate (branch or project) laboratory. The 
project laboratory must have a full-time resident 
supervisory laboratory technician qualified in 
accordance with 780 CMR Rl . 

Rl.4.2 Filing of Qualifications: Each individual 
being certified for a position must submit his or her 
credentials and qualifications under penalty of 
perjury with signature notarized. ~ Individuals 
applying for certification in more than one category 
must file separate applications for each position as 
described in 780 CMR R1.5. Application for 
certification shall be filed within 30 days of 
employment for such duties. It is the responsibility 
of the Director of Testing Services to notify the 
BBRS within seven days of any vacancy of any 
position. Any vacant position shall be filled within 
30 days. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

CONCRETE TESTING LABORATORIES LICENSING RULES AND REGULATIONS 



780 CMR RL5 QUALIFICATIONS 
Rl.5.1 Qualifications for Director of Testing 
Services: The testing services of each laboratory 
(main, branch or project) shall be under the direction 
of a Director of Testing Services who shall be a full- 
time resident employee of that laboratory and shall 
be qualified in accordance with any one of the 
following three sets of requirements: 

a. He or she shall be a Professional Engineer, 
registered in the Commonwealth of Massachusetts 
with a least five years of experience in responsible 
charge of work related to Structural Engineering, 
Construction Engineering or Construction 
Materials Testing. He shall be subject to 
demonstrate his ability to interpret the results of 
tests of concrete and concrete aggregates as stated 
in ASTM E 329-72; or, 

b. He or she shall have a Bachelor's Degree in 
Engineering from an accredited institution and an 
additional total of three years experience 
performing tests on concrete and concrete materi- 
als which shall include two years as a laboratory 
technician or supervisor. He or she shall be 
subject to demonstrate his ability to interpret the 
results of tests of concrete and concrete 
aggregates as stated in ASTM E 329-72; or 

c. He or she shall have at least eight years 
experience including five years experience as a 
laboratory technician or supervisor and shall be 
subject to demonstrate his ability to interpret the 
results of tests of concrete and concrete 
aggregates as stated in ASTM E 329-72. 

Rl.5.2 Qualifications for Supervisory Labora- 
tory Technician: A Supervisory Laboratory 
Technician shall have at least five years' experience 
performing tests on construction materials including 
concrete and concrete aggregates. He or she shall be 
subject to demonstrate his ability to perform 
correctly tests of concrete and aggregates as stated in 
ASTM E 329-72. "Class A" accreditation by the 
Pre-Qualifying Agency shall be required as 
qualification for concrete only. (See 780 CMR R2 
Concrete Testing Personnel Licensing Rules and 
Regulations.) 

Rl.5.3 Qualifications for Supervisory Field 
Technician: A Supervisory Field Technician shall 
have at least five years experience performing tests 
on construction materials including concrete. He or 
she shall be subject to demonstrate either by oral or 
written examination, or both, his ability to perform 
correctly the tests of concrete as stated in ASTM E 
329-72. "Class A" accreditation by the Pre- 
Qualifying Agency shall be required as qualification 
for concrete only. (See 780 CMR R2 Concrete 
Testing Personnel Licensing Rules and Regulations.) 

780CMRR1.6 PROJECT AFFIDAVIT 

In accordance with 780 CMR 110.12, those 
structures subject to control as required in 780 CMR 



116, affidavits must be submitted with the building 
permit application that the individuals and testing 
laboratories responsible for carrying out the duties of 
780 CMR 1 16 have been licensed and registered by 
the BBRS. 

Rl.6.1 Affidavit: In accordance with 780 CMR 
R1.6, an affidavit shall be furnished to the building 
department by the licensed laboratory and shall be 
provided by the licensed laboratory for each building 
project. 

Rl.6.2 Notice of Termination: The building 
official shall receive written notification of the 
termination of laboratory functions certifying that 
the owner has also been so notified. Such 
termination shall be effective no earlier than three 
working days from the notification received by the 
building official. 

R1.63 Successor Laboratory: If concrete testing 
is to be continued for the said project by a successor 
laboratory, such notice shall be given to the building 
official and a new project affidavit shall be filed 
with the building official. 

780CMRR1.7 REVOCATION AND 
SUSPENSION PROCEDURES 
Rl.7.1 Revocation and Suspension: The BBRS on 
its own initiative or upon the recommendation of the 
Construction Materials Safety Board may suspend or 
revoke the license of any Testing Laboratory or 
Project Laboratory found to be in noncompliance 
with 780 CMR Rl, 780 CMR, or the Standards of 
good practice. Notice of suspension or revocation of 
such license shall be in writing with the reasons for 
suspension or revocation clearly set forth therein, 
and served in accordance with 780 CMR 118.6. 

Rl.7.2 Notice and Conference: Prior to 
suspension, revocation, or refusal to renew the 
license of an accredited laboratory, written notice of 
such intent shall be served by the Construction 
Materials Safety Board of BBRS in accordance with 
780 CMR 1 1 8.6. Within ten calendar days of receipt 
of such notice, the affected accredited laboratory 
may request a conference before a three member 
panel designated by the Chairman of the 
Construction Materials Safety Board; said panel will 
hear facts and make their recommendations to the 
Construction Materials Safety Board, who in turn 
shall report such findings to the BBRS for BBRS 
consideration and action. 

R1.73 Effect of suspension or revocation: Upon 
suspension or revocation of the license, the accredit- 
ed laboratory shall immediately cease engaging in 
the testing of concrete and concrete materials for use 
in buildings and structures which are subject to the 
provision of 780 CMR 1 16 and no action brought 
before the Board of Appeals as specified in 



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780 CMR Rl.8.1 or in any court of competent 780 CMR Rl may appeal to the State Building Code 

jurisdiction shall stay the said suspension or Appeals Board as provided in 780 CMR 122; 

revocation unless said Board of Appeals or court however, entry of an appeal from the BBRS's order 

shall issue an order for a stay of the BBRS's of revocation or suspension shall not stay such 

suspension or revocation. revocation or suspension unless so ordered by the 

State Building Code Appeals Board in a preliminary 

780 CMR R1.8 APPEALS hearing conducted expressly for the purpose of a 

Rl.8.1 Building Code Appeals Board: Any stay in accordance with that part of 780 CMR 

laboratory or individual aggrieved by the suspension 122.3.2 dealing with procedure required for a 

or revocation of their license or by an interpretation, hearing on such stay, 
order, requirement, direction or failure to act under 



766 780 CMR - Sixth Edition 12/12/97 (Effective 8/28/97) 



780 CMR R2 



CONCRETE TESTING PERSONNEL LICENSING 



780CMRR2.1 ADMINISTRATION 
R2.1.1 Title: As authorized by M.G.L. c. 143, 
§§93 through 100, and in accordance with 780 
CMR 123.0 establishing the Construction Materials 
Safety Board, 780 CMR R2 is adopted for Concrete 
Testing Personnel. 

R2.1.2 Definitions: Unless otherwise expressly 
stated in 780 CMR, the following terms, for the 
purpose of 780 CMR R2, shall have the meaning 
indicated in 780 CMR R2.1.2. 

B8RS : State Board of Building Regulations and 
Standards 

Board: Construction Materials Safety Board 
(CMSB) 

Concrete Testing Personnel: A person issued a 
Class "A" license by the BBRS authorizing 
such person to test/inspect concrete. 

Field Concrete Technician: A person issued a 
Class "A" license by the BBRS to test concrete 
in the field. 

Pre-Qualifying Agency: Construction Materials 
Safety Board (CMSB) 

Testing Agency: Massachusetts Construction 
Industry Board (MOB) 

R2.1.3 Licensing: All Concrete Personnel engaged 
in the testing/inspection of concrete for use in 
buildings and structures subject to control according 
to the provisions of 780 CMR 116.0 shall be 
licensed by the BBRS in accordance with 780 CMR 
R2. 

R2.1.4 Application for Licensing: Each person 
desiring to obtain such license shall make 
application to the BBRS upon such form and in such 
manner as the BBRS shall prescribe and shall 
furnish evidence satisfactory to the BBRS that he is 
qualified to be licensed in accordance with 
780 CMR R2. 

R2.1.5 Pre-qualifying Agency: The BBRS hereby 
designates the Construction Materials Safety Board 
as its Pre-Qualifying Agency, provided however, 
that the BBRS may revoke such designation at any 
time and may designate any other agency or 
agencies which it deems qualified, from time to 
time, to act as its Pre-Qualifying Agency. The Pre- 
Qualification Agency shall examine, or cause to be 
examined, the examination results and evaluation 
performed by the Testing Agency on each Concrete 
Testing Personnel Application and make its 



recommendation to the BBRS regarding such 
license. 

R2.1.6 Testing Agency: The BBRS hereby 
designates the Massachusetts Construction Industry 
Board (MCIB) as the agency to examine and 
evaluate all persons desiring to be licensed in the 
practice of concrete testing, provided, however, that 
the BBRS may revoke such designation at any time, 
and may designate any other agency or agencies 
which it deems qualified, from time to time, to act as 
its Testing Agency. The Testing Agency shall 
submit all examination results and evaluation on 
each Concrete Testing Application and make its 
recommendations to the Pre-Qualification Agency 
regarding such license. 

R2.1.7 Examination: Accompanied by the 
application, there shall be paid to the Testing 
Agency an initial examination fee to cover the cost 
of such testing. The Testing Agency may also assess 
fees for partial or complete retesting. The Testing 
Agency is authorized to require the applicant to 
provide all required test equipment. 

R2.1.8 Notification of Examination and 
Examination Results: The Testing Agency shall 
notify the applicant of the time and place for the 
examination. The BBRS shall be informed by the 
Testing Agency/Pre-Qualifying Agency of the 
examination results, evaluation and 
recommendations. Within 14 days therefrom, the 
BBRS shall notify the applicant of its decision. If 
the applicant fails fully or partially, he may request 
of the Testing Agency a retesting. If the applicant is 
notified by the BBRS that he has met all the 
requirements herein established, he shall submit to 
the said BBRS, the license fee in accordance with 
780 CMR 2. 1 .9, and his 1 W x 1 %", full face, black 
and white or color photograph. 

R2.1.9 Licensing Fee: The fee for licensing shall 
be $50 in accordance with the fee schedule 
established by the BBRS. Concrete Testing 
Personnel employed for that purpose by a 
municipality or county or the federal government, or 
the Commonwealth or any department, commission, 
agency or authority of, or created by, the 
Commonwealth, shall be exempt from this fee. 

R2.1.10 Number and Classification: Each person 
so licensed by the BBRS shall be issued a number 
and classification. 



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R2.1.11 Renewals: Licenses shall be valid for two 
years and the license renewal fee shall be S50 
dollars. Within 30 days before the expiration date of 
any such license, the Administrator of the BBRS 
shall forward to each person so licensed an 
application form for renewal. The said 
Administrator, upon receipt of the completed form 
and fee, shall renew the license for a period of two 
years or notify such applicant of the BBRS's refusal 
with the reasons thereof. An applicant shall submit 
a renewal application with fees within one year of 
the expiration date of the license. Failure to submit 
a renewal application within this time period shall be 
cause for examination or re-examination. Upon 
successful completion of a Class A Technician's 
examination said applicant is eligible to be licensed 
upon submittal of an application and fee. Said 
application and fee shall be submitted within one 
year of the date of the examination. Failure to 
acquire a license within this time period shall be 
cause for examination or re-examination. 

780CMRR2J PRE-QUAIJFICATION 

REQUIREMENTS FOR PERSONS 

DESIROUS OF BEING LICENSED FOR 

CONCRETE TESTING 

R2.2.1 Evaluation: Field Concrete Technicians, 
subject to 780 CMR R2, shall be examined and 
evaluated by the Massachusetts Construction 
Industry Board to determine the applicant's 
knowledge and ability to perform the following 
ASTM Standard Test Procedures: 

a. ASTMC172: Sampling Fresh Concrete 

b. ASTM C143: Test for Slump 

c. ASTM C3 1 : Making and Curing Test 

Specimens in the Field 

d. ASTM C23 1 : Test for Air Content - Pressure 

Method 

e. ASTM CI 73: Test for Air Content - 

Volumetric Method 

f. ASTM C 13 8: Test for Weight per Cubic Foot 

(Density) 

g. ASTM CI 92: Storage and Transportation of 

Test Cylinders 
The applicant's performance of these tests is to be 
observed and evaluated by two qualified jurors 
designated by the Testing Agency (MCIB), using 
detailed data sheets. The said jurors' evaluations are 
appraised by the Certification Committee of the 
Testing Agency and reappraised by the Board of 
Trustees of the said Testing Agency. Three 
categories of performance are to be used in the final 
evaluation process as follows: 

1. PASS: The applicant has satisfactorily 

completed the examination. 

2. PARTIAL: The applicant has failed one of 

the five performance tests and 
must take a partial re-test. 

3. FAIL: The applicant has failed two or 

more of the five performance 



tests and must take a complete re- 
test. 

780CMRR2.3 REVOCATION AND 
SUSPENSION PROCEDURES 

R2.3.1 Revocation and Suspension: The BBRS on 
its own initiative or upon the recommendation of the 
Construction Materials Safety Board or the 
Massachusetts Construction Industry Board, may 
suspend or revoke the licenses of any one so 
engaged in the practice of Concrete Testing found to 
be in noncompliance with 780 CMR R2, 780 CMR 
or the standards of good practice. Notice of 
suspension or revocation of such license shall be in 
writing with the reasons for suspension or revocation 
clearly set forth therein, and served in accordance 
with 780 CMR 118.6. 

R2.3.2 Notice of Conference: Prior to suspension, 
revocation or refusal to renew such license, written 
notice of such intent shall be served by the Pre- 
Qualifying Agency or BBRS in accordance with 
780 CMR 1 18.6. Within ten calendar days of receipt 
of such notice, the affected licensee may request a 
hearing before a three member panel designated by 
the chairman of the said agency, who will hear facts 
and make recommendations to the Pre-Qualifying 
Agency. 

R2.3.3 Effect of Suspension or Revocation of 
License: Upon suspension or revocation of the 
license, the licensee shall immediately cease 
engaging in the testing of concrete and concrete 
materials for use in buildings and structures which 
are subject to the provision of 780 CMR and no 
action brought before the State Building Code 
Appeals Board as specified in 780 CMR R2.4. 1 or in 
any court of competent jurisdiction shall stay the 
said suspension or revocation unless said Appeals 
Board or court shall issue an order for a stay of the 
BBRS's suspension or revocation. 

780CMRR2.4 APPEALS 
R2.4.1 Massachusetts State Building Code 
Appeals Board Any one engaged in the practice of 
Concrete Testing aggrieved by the suspension or 
revocation of their license or by an interpretation, 
order, requirement, direction or failure to act under 
780 CMR R2 may appeal to the State Building Code 
Appeals Board as provided in 780 CMR 122.0; 
however, entry of an appeal from the BBRS's order 
of revocation or suspension shall not stay such 
revocation or suspension unless so ordered by the 
said Appeals Board in a preliminary hearing 
conducted expressly for the purpose of a stay in 
accordance with that part of 780 CMR 122.3.2 
dealing with the procedure required for a hearing on 
such stay. 



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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

MANUFACTURED BUILDINGS, BUILDING COMPONENTS AND MOBILE HOMES 



the manufacturer or by the inspection agency. A 
copy of such records covering attachment of each 
label shall be sent to the BBRS on the tenth of each 
month and the BBRS shall forward all such records 
to the State Enforcement Agencies. 

R3.3.4 Attachment of Labels: The inspection 
agency shall attach in numerical sequence labels to 
manufactured buildings or manufactured building 
components manufactured in accordance with an 
approved building system and meeting the 
requirements of an approved compliance assurance 
program. 

Manufacturers shall attach labels in the same 
manner to manufactured buildings or building 
components manufactured in accordance with an 
approved building system and meeting the 
requirements of an approved compliance assurance 
program. 

Manufacturers shall attach labels in the same 
manner to manufactured buildings or building 
components manufactured in accordance with a 
approved compliance assurance program, if custody 
of the labels has been entrusted to them in 
accordance with 780 CMR R3.3.3.4. 

R33.5 Suspension and Revocation: The BBRS 

may suspend or revoke, or cause to be suspended or 

revoked, the certification of any manufactured 

building or manufactured building component which 

the State Enforcement Agencies or an inspection 

agency finds not to comply with the applicable codes 

or 780 CMR R3, or which has been manufactured 

pursuant to a building system or a compliance 

assurance program for which approval has been 

suspended or revoked, or which has not been 

manufactured in accordance with the approved 

compliance assurance program. The State 

Enforcement Agencies or an inspection agency shall 

remove or cause to be removed, labels from any 

such manufactured building, manufactured building 

component or manufactured home until it is brought 

into compliance with the applicable codes and 

780 CMR R3. Notice of suspension or revocation of 

certification shall be in writing with the reasons for 

suspension or revocation clearly set forth therein. 

a. Upon suspension or revocation of the approval 

of any building system or compliance assurance 

program, no further labels shall be attached to any 

manufactured buildings or manufactured building 

components manufactured pursuant to the 

building system or compliance assurance program 

with respect to which the approval was suspended 

or revoked. Upon termination of such suspension 

or revocation, labels may again be attached to the 

manufactured building or manufactured building 

components manufactured after the date approval 

was reinstated. Should any building or building 

component have been manufactured during the 

period of suspension or revocation, it shall not be 

labeled unless the State Enforcement Asencies or 



inspection agency have inspected such building or 
building component and is satisfied that all 
requirements for certification have been met. If 
the State Enforcement Agency acts under 
780 CMR R3.3.5, it must notify the inspection 
agency. 

b. The manufacturer shall return all labels 
allocated for a manufactured building or 
manufactured building component to the BBRS 
no later than 30 days from the effective date of 
any suspension or revocation of the State 
Enforcement Agencies or inspection agency, of 
the building system or compliance assurance 
program pursuant to which the manufactured 
building or manufactured building component is 
being manufactured. The manufacturer shall also 
return to the BBRS all labels which it determines 
for any reason are no longer needed. 

R3.6 Variations of Certified Units: Manufactured 
buildings, manufactured building components or 
manufactured homes certified and labeled pursuant 
to the applicable codes and 780 CMR R3 shall not 
be varied in any way prior to the issuance of a 
certificate of occupancy without resubmission to the 
BBRS for its approval of the variation and of the 
unit which includes the variation. The State 
Enforcement Agencies or an inspection agency shall 
inspect the manufactured building, manufactured 
building component or manufactured home wherever 
it is located and such inspection may include such 
tests or destructive or nondestructive disassembly as 
the State Enforcement Agencies or an inspection 
agency deems necessary to assure compliance with 
the applicable Codes and 780 CMR R3. Local 
Enforcement Agencies may be designated by the 
BBRS or State Enforcement Agencies as inspection 
agencies for such purposes. 

780 CMR R3.4 INSPECTION BY THE STATE 

ENFORCEMENT AGENCIES OR THEIR 

AGENTS 

The State Enforcement Agencies shall make, or 
cause to be made, such inspections of the entire 
processing of manufacturing, certifying, handling, 
storing and transporting of manufactured buildings 
or manufactured building components produced 
pursuant to approved building systems as they deem 
necessary. 

R3.4.1 Inspection of Facilities: As part of the 
process of evaluating building systems and 
compliance assurance programs, the State 
Enforcement Agencies shall inspect, or cause to be 
inspected, the manufacturing facilities in which the 
buildings or building components are to be 
manufactured. 

R3.4.2 Inspection According to Compliance 
Assurance Programs: The State Enforcement 
Agencies or an inspection agency shall make such 



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inspections as may be required by an approved 
compliance assurance program, or as may be 
deemed necessary by the State Enforcement 
Agencies. 

R3.4.3 Inspection of Damaged Components: Prior 
to the issuance of a certificate of occupancy, the 
State Enforcement Agencies or an inspection agency 
shall inspect, or cause to be inspected, certified 
manufactured buildings or manufactured building 
components which it determines to have been 
sufficiently damaged after certification to warrant 
such inspection and to take such action with regard 
to such buildings or building components as is 
authorized hereof, or as is otherwise necessary to 
eliminate dangerous conditions. The local 
enforcement agencies may be designated by the 
BBRS or the State Enforcement Agencies as the 
inspection agency. 

R3.4.3.1 Repairing Damaged Components: 

The State Enforcement Agencies or an inspection 
agency shall require manufactured buildings or 
manufactured building components which are so 
damaged as to no longer comply with the 
applicable Codes and 780 CMR R3, to be repaired 
and made to comply within a reasonable time; or 
if they are so damaged that they cannot be 
brought into compliance, the State Enforcement 
Agencies or inspection agency shall order that the 
labels be removed from such buildings, building 
components or manufactured homes. A report 
under this section shall be filed with the 
inspection agency, BBRS and State Enforcement 
Agency. 

R3.4.3.2 Irreparably Damaged Components: 

Irreparably damaged buildings or building 
components shall be disposed of by the 
manufacturer. 

R3.4.4 Monitoring Inspection Agency: The State 
Enforcement Agencies or their designated agents 
shall examine each approved inspection agency, at 
any reasonable time, and without prior 
announcement, in order to monitor the reliability of 
each agency and of its monitoring of each 
compliance assurance program,. Each such 
examination shall investigate the adequacy of all 
procedures used by the agency in monitoring 
compliance assurance programs including 
inspection, tests, production methods, process 
controls, operator performance, materials, receipts, 
storage and handling, workmanship standards, 
records and all other activities which implement the 
compliance assurance program in the manufacturing 
facility, during transport, on-site, and at critical 
subcontractors' facilities. The results of such 
examinations shall be filed with the office of the 
BBRS. Copies of such reports shall be sent to the 
inspection agency and the State Enforcement 
Agencies. Inspection agencies shall be specifically- 



notified by the BBRS of any deficiencies and of the 
manner and time by which such deficiencies must be 
eliminated. If deemed necessary by the State 
Enforcement Agencies an inspection agency's 
approval may be suspended or revoked by the BBRS 
as provided herein. 

R3.4.4.1 Prior to Approval: Such examinations 
may also be conducted before approving an 
inspection agency. 

R3..5 Inspection by Disassembly: No inspection 
entailing disassembly, damage to or destruction of 
certified manufactured buildings, manufactured 
building components or manufactured homes shall 
be conducted except to implement 780 CMR R3 . 

780 CMR R3 jS LOCAL ENFORCEMENT 
AGENCY PROCEDURES AND INSPECTIONS 

R3.5.1 Issuance of building permits: Upon 
application and in conformity with the provisions of 
780 CMR, the building official shall issue building 
permits for installation of certified manufactured 
buildings, manufactured building components or 
manufactured housing. 

R3.5.1.1 Licensed Construction Supervisors 
and Certified Installers: A construction 
supervisor, duly licensed in accordance with 
780 CMR R5, shall, in accordance with 780 CMR 
108.3.5, act as the agent for the owner for the 
purpose of applying for and obtaining any and all 
building permits required for the field erection of 
all one or two family manufactured dwellings 
subject to the provisions of 780 CMR 35 and 
applicable 780 CMR R3. 

As part of the building permit application 
process, the licensed construction supervisor shall 
submit to the building official, in writing, the 
name of the installer, who shall be duly certified 
by the manufacturer to install said manufacturer's 
product, and is identified as a certified installer of 
manufactured buildings (certified installer) by 
said manufacturer. The certified installer shall be 
responsible for the safe and proper placement and 
connection of the manufactured home units in 
accordance with 780 CMR 35, 780 CMR R3 and 
specialized codes as listed in Appendix A. 

The licensed construction supervisor shall be 
responsible for the construction of the foundation 
system, and all pertinent site work, in accordance 
with 780 CMR 35 and 780 CMR R3 listed in 
Appendix A. The licensed construction 
supervisor shall provide at least 48 hours notice to 
the building official before the placement and 
connection of such units shall begin An 
application to local enforcement agencies for an 
appropriate permit shall, when requested, in 
addition to any other requirements contain: 

R3.5.1.2 Permit Application - Statement of 
Content: A statement that the work to be 



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MANUFACTURED BUILDINGS, BUILDING COMPONENTS AND MOBILE HOMES 



satisfactorily enforced, it may upon the 
recommendation of the State Enforcement Agencies, 
as provided in 780 CMR 3.2.1, extend reciprocity to 
that jurisdiction by: 

a. Giving notice to any requesting manufacturer; 

b. Giving notice to the Administrative Agency of 
the other jurisdiction; 

c. Giving notice to the State Enforcement 
Agencies and all local enforcement agencies in 
this state. 

R3.143 Rejections: If the standards of the other 
state or other agency do not meet the objectives of 
the appropriate codes or are inadequately enforced, 
or both, reciprocity shall not be extended. In that 
event, the BBRS shall notify any requesting 
manufacturer and the Administrative Agency of the 
other state or other agency of the refusal and the 
reasons therefore. 

780 CMR R3.15 PROCEDURES FOR 

RECIPROCITY CERTIFYING 

MANUFACTURED BUILDINGS OR 

BUILDING COMPONENTS 

A manufacturer from a jurisdiction to which 
reciprocity has been extended shall submit to the 
BBRS evidence that his building system and 
compliance assurance program have been approved 
by such state or other agency. The BBRS shall 
verify the approval and shall notify the State 
Enforcement Agencies, local enforcement agencies 
and the manufacturer in writing of such verification 
and that properly labeled buildings or building 
components of his manufacture will be accepted. 

780 CMR R3.16 SUSPENSION AND 
REVOCATION 

The BBRS shall suspend or revoke, or cause to be 
suspended or revoked, the acceptance or certification 
or both of such reciprocally certified manufactured 
buildings or manufactured building components if 
the State Enforcement Agencies determine that the 
standards for the manufacture and inspection of 
which manufactured buildings or manufactured 
building components of such other state or other 
agency do not meet the objectives of the appropriate 
codes and 780 CMR R3.0, or that such standards are 
not being enforced to the satisfaction of the State 
Enforcement Agencies. If such other state or other 
agency or its agents should suspend or revoke its 
approval and certification, the acceptance of 
certification or both granted under 780 CMR 3.16 
shall be revoked or suspended accordingly. Notice 
to the State Enforcement Agencies, local 
enforcement agencies, manufacturer and to the 
Administrative Agency of such other state or agency 
of such suspension or revocation shall be in writing 
with the reasons for such suspension or revocations 
set forth therein. Appeals from such suspension or 
revocations shall receive timelv review. 



PART V APPEALS 

780 CMR R3.17 HEARINGS 

All hearings shall comply with the applicable 
sections of the applicable codes and the Rules and 
Regulations thereof established for the purpose of 
appeal. 

PART VI SCHEDULE OF FEES 

780 CMR R3.18 ESTABLISHMENT 

The following is the SCHEDULE OF FEES 
established by the BBRS for certifying manufactured 
buildings or manufactured building components. 
Fees shall be made payable to the "Commonwealth 
of Massachusetts Board of Building Regulations and 
Standards" and shall accompany all applications for 
certification. 

R3.18.1 Compliance Assurance Programs and 
Building Systems: An initial fee of $1,200.00 shall 
be charged each manufacturer for its certified 
compliance assurance program for each plant 
desiring certification. The maximum fee charged 
under 780 CMR R3.18 shall be $1,200.00 for each 
manufacturing plant. 

R3.18.2 Third Party Inspection Agencies: An 

initial fee of $500.00 shall be charged to each third 
party inspection agency. 

R3.18J Annual Renewal Fees: 

a. One year from the date of certification of the 
manufacturer and every year thereafter 
certification is in effect, there shall be paid an 
annual renewal fee of $650.00 for each such 
certification. 

b. One year from the date of certification of the 
Third Party Inspection Agency, and every year 
thereafter certification is in effect, there shall be 
paid an annual renewal fee of $500.00. 

R3.18.4 Labels 

a. A fee of $50.00 per unit of a manufactured 
building shall be charged for each label issued by 
the BBRS. 

Note: A "unit" as used in 780 CMR R3.18 
shall mean any building or proportion thereof 
which is towed or shipped separately to be 
somehow tied together at the site. 

b. A fee of $ 1 .00 per building component shall 
be charged for each label issued by the BBRS for 
building components. 

Note: Manufacturers of building components 
shall be permitted to use any labels as 
approved by the BBRS. If such labels are 
supplied by any source other than the BBRS, 
there shall be no charge for such labels. 

c. Mutilated labels may be replaced at the option 
of the BBRS at a cost of $2.00 each. 



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THE MASSACHUSETTS STATE BUILDING CODE 

d. Upon satisfactory proof to the BBRS of lost or e. Labels shall be purchased from the BBRS by 

stolen labels, not the result of negligence, labels the inspection agency or manufacturer, 

may be replaced at a cost of S2.00 each. 



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780CMR R6 



REGISTRATION AND ENFORCEMENT OF 
HOME IMPROVEMENT CONTRACTOR PROGRAM 



FORWARD 

780 CMR R6 covers the registration of home improvement contractors and subcontractors and enforcement of the 
requirements of M.G.L. c. 142A as they pertain to home improvement contractors and subcontractors. Other 
regulations applicable to the Home Improvement Contractor program include: 

201 CMR 14.00 Operation of the home improvement arbitration program authorized by M.G.L. c. 142A, 
promulgated by the secretary of the Office of Consumer Affairs and Business Regulations. 

201 CMR 15.00 Operation of the home improvement guaranty fund, promulgated by the secretary of the Office 
of Consumer Affairs and Business Regulations. 



780 CMR R6.1 General Provisions 

R6.1.1 Title 

R6. 1 .2 Definitions 



R6.1.3 Scope 


780 CMR 


R6. 1 .4 Administration and Enforcement 


R6.4.1 


R6. 1 .4. 1 Director responsibility 


R6.4. 


R6. 1 .4.2 Advisory board 


R6.4. 


R6. 1 .5 Persons Who Must Register 


R6.4.2 


R6. 1.5.1 Filing of application 


R6.4. 


R6. 1 .5.2 Designated individual 




R6. 1.5.3 Liability 


R6.4. 


R6. 1 .6 Persons Exempt From Registration 


R6.4. 




R6.4.3 


780 CMR R6.2 Registration Procedure 


R6.4. 


R6.2.1 Applicant Actions 


R6.4. 


R6.2.1.1 Application 


R6.4.4 


R6.2.1.2 Supporting documentation 




R6.2. 1 .3 Mailing address 


R6.4, 


R6.2. 1 .4 Certified check/money order 


R6.4, 


R6.2. 1 .5 Lost/destroyed certificate 


R6.4, 


R6.2. 1 .6 Licensee liability 


R6.4, 


R6.2.2 Director's Action on Application 




R6.2.2.1 Issuance of certificate 


780 CMR 


R6.2.2.2 Grounds for refusal to register 


R6.5.1 


R6.2.2.3 Application refused 


R6.5.2 


R6.2.2.4 Record retention 


R6.5. 


R6.2.3 Duration of Registration 


R6.5. 


R6.2.4 Fees to be Paid Upon Registration or 


R6.5. 


Renewal 


R6.5. 


R6.2.4. 1 Registration and renewal fee 


R6.5. 


R6.2.4.2 Contribution to guaranty fund - 


R6.5.3. 


initial registration 


R6.5. 


R6.2.5 Responsibilities of Each Registrant 


R6.5. 


R6.2.5.1 Changes in status 


R6.5. 


R6.2.5.2 Display of certificate number 


R6.5.4 


R6.2.5.3 Return of certificate 





780 CMR R6.3 Enforcement Procedure 

R6.3 . 1 Notification of Violation 
R6.3.2 Consideration of Factors 
R6.3 .3 Letter of Reprimand 
R6.3.4 Suspension, Revocation, Administrative 
Penalties 
R6.3 .4. 1 Hearing procedure 



R6.3.5 Injunction, Restitution 
R6.3.6 Fines and Criminal Penalties 



R6.4 Enforcement Actions 

Administrative Penalties 

1 . 1 Allowable actions 

1.2 Pendency of claims 
Fines and Criminal Penalties 

2. 1 Sought by attorney general or 
district attorney 

2.2 Operating without certificate 

2.3 Other violations 
Injunction, Restitution 

3 . 1 Order from superior court 

3.2 Director bond not required 
Permit Requirements, Prohibited Acts 
and Penalties 

4 . 1 Permit requirements 

4.2 Prohibited acts 

4.3 Penalties 

4.4 Deceptive act 

R6.5 Contracts 

Contract in Writing 
Contents of Contract 

2.1 Documents and information 

2.2 Permit notice 

2.3 Acceleration of payment 

2.4 Copy to owner 

2.5 Alternative dispute resolution 
Dispute Resolution 

3.1 Court action 

3.2 Owner right to arbitration - 

3.3 Contractor right to arbitration 
Validity of contract 



780 CMR R6.6 Supplementary Identification 
Cards 

R6.6.1 Definitions 

R.6.6.2 Certificates of registrants 

R.6. 6.2.2 Non-Individual Registrants 
R6.6.3 Fees 
R6.6.4 Expiration 



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780 CMR R6.1 GENERAL PROVISIONS 
R6.1.1 Title: 780 CMR R6 is authorized and 
promulgated by the administrator of the State Board 
of Building Regulations and Standards under the 
authority of M.G.L. c. 142A. 

R6.1.2 Definitions: 

Application: The form provided by the director 
which, along with other documentation and fee(s) 
that may be required, must be duly filed to 
become a registered home improvement 
contractor or subcontractor. 

Advertisement: Any commercial message in any 
newspaper, magazine, leaflet, flyer, catalog, 
display space in the telephone book, on radio, 
television, public address system, or made in 
person, by letter or other printed material, or any 
interior or exterior sign or display, including on a 
vehicle, which is delivered or made available to 
an owner by a registrant in any manner 
whatsoever. 

Applicant: Any person who files an application to 
become registered as a home improvement 
contractor or subcontractor. 

BBRS: The State Board of Building Regulations and 
Standards 

Certificate: The document provided to the registrant 
which lists the certificate number and other 
information required by the director. 

Certificate number: See registration number. 

Clear and Conspicuous: The material 
representation being disclosed is often point type 
and is so presented as to be readily noticed and 
understood by a reasonable person. Language in 
the body of a contract is "conspicuous" if it is in 
larger or contrasting type or color, or underscored. 

Contract: Unless specifically noted otherwise in 
the text, a written agreement between a home 
improvement contractor and an owner contained 
in one or more documents for the performance of 
certain residential contracting work, including all 
labor, material, goods and services set forth under 
said agreement for a total amount exceeding 
$1,000.00. 

Contractor: Any person who, through himself or 
others, undertakes, offers to undertake, purports to 
have the capacity to undertake, or submits a bid 
for construction work. (See "home improvement 
contractor") 



Director: The administrator of the State Board of 
Building Regulations and Standards, an agency 
within the executive office of public safety, 
established by M.G.L. c. 6A, § 19. 

Employee: For the purposes of 780 CMR R6 in 
determining the number of employees of an 
applicant for registration, any individual engaged 
in construction related activities who, in the 
weekly pay period prior to the date of registration 
worked 20 or more hours for the registrant and for 
whom, the registrant withheld or was required to 
withhold federal or state income taxes and who, 
during the same pay period, was not otherwise 
paid or had such taxes withheld by any other 
registrant. Included would be all construction 
workers, supervisors, sales personnel, designers, 
estimators, active partners and officers of 
corporations. 

Fund: The residential contractor's guaranty fund. 
See "guaranty fund". 

Fund administrator: the administrator of the 
residential contractor's guaranty fund, appointed 
by the secretary of the Office of Consumer Affairs 
and Business Regulation. 

Guaranty fund: The residential contractor's 
guaranty fund. A fund out of which an owner, as 
defined herein, aggrieved by a registrant(s) may 
be paid part or all of their damages under rules 
and regulations promulgated by the secretary of 
the Office of Consumer Affairs and Business 
Regulation. 

Home improvement contractor: Any person who 
owns or operates a contracting business who, 
through himself or others, undertakes, purports to 
have the capacity to undertake, offers to 
undertake, or submits a bid for residential 
contracting work to an owner, as such work is 
defined in 780 CMR R6 and M.G.L. c. 142A, and 
such work for each project is in a total amount in 
excess of $1,000, and is registered or required to 
be registered in accordance with M.G.L. c. 142A 
and 780 CMR R6. 

Homeowner: See "owner". 

Local consumer group: A local or regional agency 
which deals with the resolution of consumer 
problems and who is determined eligible by the 
attorney general under standards set by the 
attorney general in accordance with M.G.L. c. 12, 
§11Q. 

Mortgage broker: Any person, who, for 
compensation or gain, or in the expectation of 
compensation or gain, directly or indirectly 



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CONTRACTOR REGISTRATION AND ENFORCEMENT OF HOME IMPROVEMENT 

CONTRACTOR PROGRAM 



negotiates, places, assists in placement, finds or 
offers to negotiate, place, assist in placement of 
mortgage loans on residential property for others, 
or as otherwise defined in M.G.L. c. 255E. 

Mortgage lender: Any person engaged in the 
business of making mortgage loans, or issuing 
commitments to fund mortgage loans, or 
accepting applications or fees associated with the 
making of mortgage loans which are secured by a 
mortgage on residential property, or as otherwise 
defined in M.G.L. c. 255E. 

Mortgage loan: A loan to any person made 
primarily for personal, family, or household 
purposes, secured wholly or partially by a 
mortgage on a residential property, or as 
otherwise defined by M.G.L c. 255E. 

Owner: Any homeowner of a building which is an 
existing building at the time of a contract that is 
owner occupied, containing at least one but not 
more than four dwelling units, or a tenant 
authorized by the homeowner thereof, who orders, 
contracts for, or purchases the services of a 
contractor or subcontractor. An owner occupying 
a condominium unit in a building containing no 
more than four dwelling units qualifies as an 
owner under this definition, provided the owner 
owns a total of not more than four condominium 
units. A condominium association does not 
qualify as an owner. 

Owner-occupied: The residential building of at least 
one but not more than four dwelling units and 
occupied by the owner as a primary residence. 

Permit: For the purposes of 780 CMR R6, any 
construction-related permit, excluding any 
permits required by the owner which are not 
considered construction-related, such as zoning, 
environmental, historical commission, and the 
like. 

Person: Any individual, partnership, corporation, 
society, trust, association, or any other legal 
entity. 

Registrant: Any duly registered home improvement 
contractor or subcontractor. 

Registration number: The number assigned to the 
applicant after he has been approved for 
registration by the director and the Board of 
Building Regulations and Standards. 

Residential contracting: The reconstruction, 
alteration, renovation, repair, modernization, 
conversion, improvement, removal or demolition 
or the construction of an addition to any pre- 



existing owner-occupied building containing at 
least one but not more than four dwelling units, 
which building or portion thereof is used or 
designed to be used as a residence or dwelling 
unit, or to structures which are adjacent and 
accessory to such residence or building, including 
but not necessarily limited to: garages, sheds, 
cabanas, poolhouses, gazebos. 

Salesperson: any person, other than a supplier of 
materials or a laborer, who solicits, offers, 
negotiates, executes, or otherwise endeavors to 
procure by any means whatsoever, directly or 
indirectly, a contract for residential contracting 
services from an owner on behalf of a home 
improvement contractor or subcontractor. 

Secretary: The secretary of the Office of Consumer 
Affairs and Business Regulations. 

Subcontract: A contract, written or verbal, in any 
amount, between a home improvement contractor 
and a subcontractor or between two 
subcontractors for the performance of any part of 
the home improvement contractor's or 
subcontractor's contract. 

Subcontractor: Any person, other than a supplier 
of only materials, who enters into a contract, 
written or verbal, with a home improvement 
contractor for the performance of any part of a 
home improvement contractor's contract with an 
owner for residential contracting, or who enters 
into a contract with any other subcontractor for 
the performance of any part of the subcontractor's 
contract. 

R6.1.3 Scope: 

R6.13.1 M.G.L. c. 142A and 780 CMR R6 
require the registration of persons who engage in 
residential contracting work as defined in 
780 CMR R6 and M.G.L. c. 142A after July 1, 
1992, and define the requirements of M.G.L. 
c. 142 A and enforcement of these requirements, 
as they pertain to home improvement contractors 
and subcontractors. 

R6.1.3.2 Except for those persons who are 
specifically exempt from the provisions of 
780 CMR R6 and M.G.L. c. 142A, all contractors 
and subcontractors who engage in residential 
contracting as defined in 780 CMR R6 and 
M.G.L. c. 142A shall be subject to and shall 
comply with 780 CMR R6 and M.G.L. c. 142A. 

R6.1.4 Administration and Enforcement: 

R6.1.4.1 Director responsibility: The director 
shall promulgate and enforce the provisions of 
780 CMR R6 and M.G.L. c. 142A as to all home 



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improvement contractors and subcontractors who 
are registered or required to register. 

R6.1.4.2 Advisory board: The director may 
appoint an advisory board which may review 
proposed suspensions, revocations, and 
administrative penalties against any registrants, 
and shall make recommendations to the director 
relative thereto. The advisory board shall include 
six members, any four of whom will constitute a 
quorum; the fund administrator, a representative 
of the attorney general, a representative of a 
consumer group appointed by the secretary, a 
representative of the Massachusetts Homebuilders 
Association who is a registered home 
improvement contractor or subcontractor, a 
Representative of the National Association of the 
Remodeling Industry, and a BBRS staff member. 

R6.1.5 Persons Who Must Register: 

R6. 1.5.1 General: All home improvement 
contractors and subcontractors, as defined in 
780 CMR R6, except those exempt in 780 CMR 
R6. 1.6, shall register with the director by filing an 
application prescribed by the director. 

R6.1.5.2 Designated individual: In the case of 
registration by a corporation or partnership, an 
individual shall be designated to be responsible 
for the corporation's or partnership's residential 
contracting work. 

R6.1.5.3 Liability: The corporation or 
partnership and its designee shall be jointly and 
severally liable for the payment of the registration 
fee, the payment to the guaranty fund, and for 
violations of any provisions of 780 CMR R6, 
including actions by the registrant's employees, 
subcontractors or salespersons. 

R6.1.6 Persons Exempt From Registration or 
Renewal: Any person exempt from registration 
under 780 CMR R6.1.6, and does not voluntarily 
register, is not subject to any of the provisions of 
780 CMR R6 or M.G.L. c. 142A. Persons exempt 
from registration are: 

1. the Commonwealth or its political 
subdivisions; 

2. any school, public or private, offering as part 
of a vocational education program courses and 
training in any aspects of home construction or 
home improvements; 

3. electricians, plumbers, architects or any other 
persons who are required by law to attain 
standards of competency or experience as a 
prerequisite to licensure for and engaging in such 
trade or profession and who are acting exclusively 
within the scope of the profession for which they 
are currently licensed pursuant to such law, 
construction supervisors excepted. 



4. persons dealing in the sale of goods or 
materials who neither arrange to perform nor 
perform directly or indirectly any work or labor in 
connection with the installation of or application 
of the goods or materials; 

5. any owner personally doing residential 
contracting work on his/her own home; 

6. any individual who performs construction 
related labor or services for a home improvement 
contractor or subcontractor, for wages or salary 
and who does not act in the capacity of a home 
improvement contractor or subcontractor; 

7. any contractor or subcontractor who works on 
one residential contracting undertaking or project 
by one or more contracts where the aggregate 
contract price to the owner is less than SI, 000; 
provided, however, that the contract is not in an 
amount of less than $1,000 for the purpose of 
evading 780 CMR R6 or M.G.L. c. 142 A. 

8. any person who engages in the business of a 
home improvement contractor or subcontractor on 
other than a full-time basis, and who has earned in 
gross revenues from residential contracting work, 
less than $5,000 in the previous 12-month period; 

9. any person acting as a home improvement 
contractor or subcontractor who was enrolled as a 
full-time student in a secondary school or college 
with degree granting authority from the 
government of the state in which the school is 
located, for the immediately preceding academic 
semester and is also enrolled as a full-time student 
for the next academic semester, in the same or a 
similar degree granting secondary school or 
college provided that at least % of the number of 
employees of the contractor or subcontractor are 
similarly enrolled in secondary schools or 
colleges and that the home improvement 
contractor or subcontractor does not reasonably 
expect to earn or does not in fact earn, in gross 
revenues, more than $5,000 from residential 
contracting work; 

10. persons who install any or all of the 
following: 

• central heating, 

• air-conditioning systems, 

• energy-conservation devices, or 

• provides conservation services conducted by 
or on behalf of a public utility under a 
program approved by the department of public 
utilities; 

1 1 . any contractor or subcontractor who works 
exclusively in any of the following home 
improvement areas: 

• landscaping; 

• interior painting or wall covering; 

• finished floor covering, including, but not 
limited to, carpeting, vinyl, tile, non-structural 
hardwood; 

• fencing or freestanding masonry walls; 

• above-ground swimming poois; 



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CONTRACTOR REGISTRATION AND ENFORCEMENT OF HOME IMPROVEMENT 

CONTRACTOR PROGRAM 



R6.5.2.2 Permit notice: Any contract entered 
into between a home improvement contractor and 
an owner shall contain a clause informing the 
owner of the following: 

1 . any and all necessary construction-related 
permits; 

2. that it shall be the obligation of the home 
improvement contractor to obtain such permits 
as the owner's agent; 

3. that owners who secure their own 
construction-related permits or deal with 
unregistered contractors will be excluded from 
the guaranty fund provisions of M.G.L. 
c. 142A; 

R6.5.2.3 Acceleration of payment: No contract 
shall contain an acceleration clause under which 
any part or all of the balance not yet due may be 
declared due and payable because the holder 
deems himself to be insecure. However, where the 
contractor deems himself to be insecure he/she 
may require as a prerequisite to continuing said 
work that the balance of funds due under the 
contract, which are in the possession of the owner, 
shall be placed in a joint escrow account requiring 
the signatures of the home improvement 
contractor and owner for withdrawal. 

R6.5 2.4 Copy to owner: At the time of signing, 
the owner shall be furnished with a copy of the 
contract signed by both the home improvement 
contractor and the owner. No work shall begin 
prior to the signing of the contract and transmittal 
to the owner of a copy of such contract. 

R6.5.2.5 Arbitration: Any contract entered into 
between a home improvement contractor and 
owner may provide that the home improvement 
contractor may initiate alternative dispute 
resolution through any private arbitration services 
approved by the secretary, as provided in M.G.L. 
c. 142A; provided, that said alternative dispute 
resolution provision is cleariy and conspicuously 
disclosed in the contract, in language designated 
by the secretary, and that each party separately 
signs and dates the provision, thereby assenting to 
the procedure. The following language and format 
is acceptable: 

THE CONTRACTOR AND THE 
HOMEOWNER HEREBY MUTUALLY 
AGREE IN ADVANCE THAT IN THE 
EVENT THE CONTRACTOR HAS A 
DISPUTE CONCERNING THIS 

CONTRACT, THE CONTRACTOR MAY 
SUBMIT SUCH DISPUTE TO A PRIVATE 
ARBITRATION SERVICE WHICH HAS 
BEEN APPROVED BY THE SECRETARY 
OF THE EXECUTIVE OFFICE OF 
CONSUMER AFFAIRS AND BUSINESS 
REGULATIONS AND THE CONSUMER 
SHALL BE REQUIRED TO SUBMIT TO 



SUCH ARBITRATION AS PROVIDED IN 
M.G.L. C.142A. 



Contractor 



Owner 

NOTICE: THE SIGNATURES OF THE 
PARTIES ABOVE APPLY ONLY TO THE 
AGREEMENT OF THE PARTIES TO 
ALTERNATIVE DISPUTE SETTLEMENT 
INITIATED BY THE CONTRACTOR. THE 
OWNER MAY INITIATE ALTERNATIVE 
DISPUTE RESOLUTION EVEN WHERE THIS 
SECTION IS NOT SEPARATELY SIGNED BY 
THE PARTIES. 

R6.5.3 Dispute Resolution 

R6.53.1 Court action: Any party may bring an 
action to enforce any provisions of 780 CMR R6 
and M.G.L. c. 142A, in superior court, the district 
court, or the small claims division of the district 
court. 

R6.53.2 Owner right to arbitration: In the 

alternative, an owner may request that a dispute 
resulting from and relating to residential 
contracting be decided under the terms of a 
private arbitration service approved by the 
secretary. 

R6.533 Contractor right to arbitration: The 

home improvement contractor may initiate dispute 
resolution through private arbitration services 
approved by the secretary, provided: that the 
contract between the owner and the home 
improvement contractor contains such a clause as 
provided in 780 CMR R6.5.2.5. 

R6.5.4 Validity of contract: Contracts which fail 
to comply with the requirements of 780 CMR R6 
and M.G.L. c. 142A shall not be invalid solely 
because of noncompliance. 

780 CMR R6.6 SUPPLEMENTARY 
IDENTinCATION CARDS 
R6.6.1 Definitions 

Certificate of registration: The document issued by 
the Director showing the registrant's certificate 
number and other data as required by the director. 

Identification card: The document issued to the 
responsible individual or to one or more 
individuals in the employ of the 
applicant/registrant. 

R6.6.2 Certificates of registrants: For applicants 
reaisterinc as individuals, the certificate of 



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registration and identification card will be issued in 
the name of the registrant. Only one identification 
card will be issued to individual registrants. 

R6.6.2.2 Non-Individual Registrants: 

R6. 6.2.2.1 If the Applicant is a corporation, 
partnership, proprietorship with a fictitious 
name, or other non-individual entity, the 
certificate of registration and the initial 
identification card will bear the name of the 
registrant entity and the individual responsible 
for the home improvement residential 
contracting activities of the registrant. 
R6.6.2.2.2 Supplementary identification cards 
may be issued, upon request of the registrant, 
to named officers, partners, of key individuals 
in the employ of the registrant under the 
certificate of registration number of the 
applicant entity, upon submission of the 



appropriate request form and fee. The 
applicant is responsible for the prompt return 
of individual identification cards if there is a 
change in status of individuals holding such 
supplementary cards. 

R6.6.3 Fees: For each additional identification card 
request in accordance with 780 CMR R6. 2.2.1, an 
additional fee per card in an amount of SI 0.00 must 
accompany the request for additional cards. 

R6.6.4 Expiration: Supplementary cards will 
expire on the same date as the expiration date of the 
registrant entity, and must be renewed along with the 
renewal of the registrant entity's registration by 
submission of the required application and fee of 
$10.00 per card requested. 



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# 191 



THE COMMONWEALTH OF MASSACHUSETTS 

Office of the Secretary of the Commonwealth 

Notice of Correction 

Regulation Filing To be completed by filing agency 



CHAPTER NUMBER: 



* 780 CMR R3 



CHAPTER TITLE: Manufactured Buildings. Manufactured Building Components and Mob i 1 e 

Homes 
AGENCY: State Board of Building Regulations and Standards 

ORIGINAL PUBLICATION REFERENCE: Register Number 826 Date 9/19/97 

SUMMARY OF CORRECTION 

'Corrects footer at bottom of page which incorrectly identified the page as 
an "EMERGENCY" page. 



AGENCY CONTACT: Wm Ryan PHONE: (617) 727-2831 

ADDRESS: Regulations Division, ,-Qne Ashburton PI. , Boston, MA 02108 

Publication To be completed by the Regulations Division 



MASSACHUSETTS REGISTER NUMBER: 829 
EFFECTTVE DATE: 8/28/97 



CODE OF MASSACHUSETTS REGULATIONS 



Remove these pages: 
CMR: Vol. 



775, 776 



Insert these pages: 



775, 776 



DATE: 



10/31/97 



A TRUE COPY ATTEST 



WiLLiAW FRANCIS GALVIN' 
SECRETARY 0F7HE CG^^0!>V-5ALTr; 



97 

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780 CMR: STATE BOARD OF BUILDING REGULATIONS AND STANDARDS 

MANUFACTURED BUILDINGS, BUILDING COMPONENTS AND MOBILE HOMES 



performed under such permit is to include the 
installation of a certified manufactured building, 
manufactured building component or 
manufactured home in accordance with the 
provisions of the applicable codes, the statement 
to be signed by the applicant or his agent, with the 
appropriate address. 

R3.5.13 Permit Application - Building System: 
A true copy of the approved building system with 
respect to which the manufactured building or 
manufactured building component was 
manufactured or is to be manufactured, where one 
has not previously been furnished to that local 
enforcement agency. 

R3. 5.1.4 Permit Application • Building System 
Approval: A copy of the Building System Report, 
as approved by the BBRS, where it has not 
previously been furnished to the Local 
Enforcement Agency. 

R3. 5.2 Inspection of Site Preparation and Service 
Connections: Appropriate local enforcement 
agencies shall inspect site preparation work 
including foundations, not within the scope of the 
approval and certification, and the structural, 
mechanical, plumbing and electrical connections 
among units, for compliance with applicable law, 
rules and regulations. 

R3.5.3 Compliance with Instructions: Appropriate 
local enforcement agencies shall inspect all 
manufactured buildings, manufactured building 
components or manufactured homes upon, or 
promptly after, installation at the building site to 
determine whether all instructions in the Building 
System Approval Report or conditions listed on the 
manufacturer's data plate have been followed 

This may include tests for tightness of plumbing 
and mechanical systems, and for malfunctions in the 
electrical system and a visual inspection for obvious 
nonconformity with the approved building system. 

R3.5 3,1 Disassembly Prohibited: Unauthorized 
destructive disassembly of certified buildings and 
building components and mobile homes shall not 
be performed in order to conduct such tests or 
inspections, except as provided in 780 CMR 
R33.4.3, nor shall there be imposed standards or 
test criteria different from those adopted by the 
State Enforcement Agencies or specified in the 
Building System Approval Report, or the 
"HUD's" Manufactured Home Construction and 
Safety Standards. 

R3.53.2 Opening Panels: Nondestructive 
disassembly may be performed only to the extent 
of opening access panels and cover plates. 

R3.5.4 Noncomplying New Units: Local 
enforcement agencies shall report to the BBRS in 
accordance with 780 CMR R3.5.6 any 



noncomplying manufactured buildings and building 
components. 

R3.5.5 Certificates of Occupancy: Appropriate 
local inspectors shall issue certificates of occupancy ' 
for certified manufactured buildings and 
manufactured homes containing certified building 
components which otherwise comply with all the 
applicable codes, after they have been installed and 
inspected pursuant to the applicable codes and 
780 CMR R3, provided that any manufactured 
building or manufactured building component found 
not to comply with the Building System Approval 
Report or any manufactured home found not to 
comply with "Hud's" Manufactured Home 
Construction and Safety Standards shall be brought 
into compliance before such certificate of occupancy 
shall be issued. 

R3.5.6 Reporting of Violations to Department of 
Public Safety: When any local enforcement agency 
is making an inspection and finds violations or 
suspected violations, it shall report the details of the 
violations in writing to the BBRS. Where violations 
are hazardous to occupants, a certificate of 
occupancy shall not be issued and the building shall 
not be occupied before such hazards are corrected 
If the violations are not hazardous, a temporary 
certificate of occupancy may be issued. 

780 CMR R3.6 FEES 
R3.6.1 Deposit for Application to the BBRS: A 

deposit shall be required upon application to the 
BBRS to perform any of the functions in 780 CMR 
R3. 

R3.6.2 Establishment of Fees: Fees charged by the 
BBRS for functions performed shall be in 
accordance with the fee schedule established by the 
State Administrative Agencies as specified in 
780CMRR3.18. 

780 CMR R3.7 NOTIFICATION OF 

CHANGES IN NAME, ADDRESS, 

OWNERSHIP OR LOCATION 

R3.7.1 Notification by Manufacturers: 

Manufacturers shall notify the BBRS in writing 

within ten days of any of the following occurrences: 

a. The corporate name is changed; 

b. The main address of the company is changed; 

c. There is a change in 25% or more of the 
ownership interest of the company within a 12 
month period; 

d. The location of any manufacturing facility is 
changed; 

e. A new manufacturing facility is established; or 

f. There are changes in principal officers of the 
firm. 

The BBRS shall notify the State Administrative 
Agencies of such occurrences. 



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THE MASSACHUSETTS STATE BUILDING CODE 

/ 
R3.7.2 Notification by Inspection Agencies: 
Inspection agencies shall notify the BBRS in writing 
within ten days of any of the following occurrences: 

a. The company name is changed; 

b. The main address of the company is changed; 

c. There is a change in 25% or more of the 
ownership interest or control of the company 
within a 12 month period; 

d. The location of any testing facility is changed; 

e. A new testing facility is established; or 

f. There are changes in principal officers and key 
supervisory and responsible personnel of the firm. 

The BBRS shall notify the State Administrative 
Agencies of such occurrences. 

780 CMR R3.8 PROPRIETARY 
INFORMATION 

All information relating to building systems and 
compliance assurance programs which the 
manufacturer or other party considers proprietary 
shall be so designated by him at the time of its 
submission, and shall be so held by the State 
Enforcement Agencies and State Administrative 
Agencies, except as the State Administrative 
Agencies determine in each case, that disclosure is 
necessary to carry out the purposes of the applicable 
codes and 780 CMR R3. 

PARTD REQUIREMENTS FOR 

SUBMISSION OF BUILDING 
SYSTEMS AND COMPLIANCE 
ASSURANCE PROGRAMS 

780 CMR B2S BUILDING SYSTEMS 

Building systems shall meet the requirements set 
forth below to be evaluated for compliance with the 
standards, specifications and requirements adopted 
by the State Administrative Agencies. 

R3.9.1 General Requirements: 

R3.9.1.1 Plans, Specifications and 
Documentation: Building systems, including all 
plans, specifications and other documentation, 
shall be submitted in quadruplicate to the BBRS 
who shall act as the depository and disburser of 
all such hems. The BBRS shall forward to the 
appropriate State Enforcement Agencies plans, 
specifications and documentation for their 
recommendations. 

R3.9.1.2 Form and Fees: Building systems shall 
be submitted in the form prescribed by the BBRS 
and shall be accompanied by all required fees. 

R3.9.U Identification: All documents 
submitted with the application shall be identified 
to indicate the manufacturer's name, office 
address and address of the manufacturing facility. 



R3.9.1.4 Plans Showing Elements: Plans shall 
be submitted showing all elements relating to 
specific systems on properly identifiable sheets. 

R3.9.1.S Application - Approved Architect or 
Engineer Each building system application shall - 
bear the signature and seal of an approved 
registered architect or registered professional 
engineer certifying that the building system 
complies with the applicable codes and standards 
promulgated herein. 

R3.9.1.6 On-site Work Identified: All work to 
be performed on-site, including connection of all 
systems, equipment and appliances, shall be 
identified and distinguished from work to be 
performed in the manufacturing facility. 

R3.9.1.7 Space for State Administrative 
Agencies Approval Stamp: A 3" x 4" blank 
rectangular space shall be provided on all sheets 
of plans near the title box for the BBRS's stamp of 
approval. 

R3.9.1.8 Material Grade and Quality: Grade, 
quality and identification of all material shall be 
specified. 

R3.9.1.9 Calculations and Test Reports: Design 
calculations and test reports shall be specified. 
R3.9.1.9.1 Drawings to Scale: Drawings shall 
be drawn to scale and be legible. 
R3.9.1.9.2 Label and Data Plate Location: 
Drawings shall indicate the location of the 
approved label and data plate. 
R3.9.1.9 .3 Drawings Dated and Identified: 
Drawings shall be dated and identified. The 
number of sheets in each set shall be indicated. 

R3.9 3. Required Construction Details: Building 
systems for manufactured buildings shall provide or 
show, but not be limited to, the details listed below 
including the method of their testing or evaluation, 
or both. These requirements shall apply to the 
building systems for building components only to 
the extent deemed necessary by the State 
Enforcement Agencies to permit a proper evaluation 
of the building component. 

R3.9.2.1 General: 

a. Details and methods of installation of 
manufactured buildings or manufactured 
building components on foundations and/or to 
each other. 

b. All exterior elevations. 

c. Cross sections as necessary to identify 
major building components. 

d. Details of flashing, such as at openings and 
at penetrations through roofs and 
subcomponent connections. Indicate flashing 
material and gauge to be used. 
e Attic access and attic ventilation. 

f. Exterior wall, roof and soffit material as 
well as finish. 



776 



780 CMR - Sixth Edition 



2/7/97 (Effective 2/28/97)