The Board of Building Regulations and Standards

1
Please note that the following Power Point
presentation is solely intended as educational
material that is general in nature.  This is not
intended to be an exhaustive review of the
Department of Public Safetys laws and
regulations and is not intended to provide legal
advice.  Materials presented in this presentation
should not be considered a substitute for actual
statutory or regulatory language.  Always refer
to the current edition of a referenced statute,
code and\or regulation for precise language. 
2
The Board of Building Regulations and Standards

• 7TH EDITION
• BUILDING CODE FOR ONE- AND TWO-FAMILY DWELLING
  CODE
• HIGHLIGHTS

3
7TH EDITION LAYOUT

• A 2 VOLUME SET
• The Massachusetts Basic Building Code - all
  buildings except 1 2 family dwellings
• The Massachusetts One- and Two-Family Dwelling
  Code 1 2 family dwellings

4
7TH EDITION CHAPTER NUMBERING

• The Basic Building Code
• CHAPTERS 1 50 CHAPTERS 100-120 INDEX
• The One- and Two-Family Dwelling Code
• CHAPTERS 51-120 INDEX

5
NEW CONSTRUCTION SUPERVISOR LICENSES CREATED

• Residential Roof Covering CSL
• Residential Window and Siding (Weather
  protection) CSL
• Residential Solid Fuel-Burning Appliance
  Installer CSL
• Demolition Only CSL

6
WHEN ARE THESE NEW CSL TYPES REQUIRED?

• The BBRS will issue official guidance as to when
  these new CS Licenses are required but they are
  not immediately required
• It is anticipated that late 2007 at the earliest
  is when these new License requirements will be
  officially imposed as testing and grandfathering
  activities need to precede these requirements

7
CHAPTER 51 (C1) HIGHLIGHTScontinued

• Section 5111.11 Via the Building Official,
  forwarding of fire protection system construction
  documents to the Head of the Fire Department for
  review and comment
• Section 5116.1 inclusive Elaboration of the
  responsibilities of the CSL

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Section 5301.1.1 Alternative design provisions
  via
• The American Forest and Paper Association (AFPA)
  Wood Frame Construction Manual (WFCM)
• or
• The American Iron and Steel Institute (AISI)
  Standard for Cold-Formed Steel Framing
  Prescriptive Method for One- and Two-Family
  Dwellings (COFS/PM)

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780 CMR

• 7th Edition One and Two-Family Dwellings
• New Wind and Snow Loads

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Table 5301.2(4) Massachusetts Basic Wind Speeds
  Table w/ Zones of 90 mph, 100 mph, 105 mph, 110
  mph and 120 mph
• SHOW MAP FOR PRESENTATION HERE

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SOME ELABORATION ON WIND DESIGN ISSUES

• DEFINITION OF WIND BORNE DEBRIS REGION
• Areas w/in hurricane-prone regions within one
  mile of the coastal mean high water line where
  the basic wind speed is 110 mph or greater or
  where the basic wind speed is equal to 120 mph or
  greater

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Table 5301.2(5) Massachusetts Ground Snow Loads
  Table 5301.2(5) w/Zones of 35 PSF, 45 PSF, 55 PSF
  and 65 PSF
• SHOW MAP FOR PRESENTATION HERE

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7th Edition for One and Two-Family Dwelling Code

• New Loadings
• New Snow Loads of 35, 45, 55, and 65 psf
• Wind Loads up to 120 mph

• The Issues
• Header Design
• Span Tables up to Snow Loads 50 psf Only
• Roof Rafter Design
• Span Tables of 30, 50, and 70 psf Only
• No Span Table for L/360.
• Building Construction in High Wind
• Must use WFCM or SSTD 10 as Design Criteria in
  Zones 110 mph and above

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AFPA Have Guides for High Wind Construction

• Guides for Wood Construction in 110 and 120 mph
  Zones are Available
• BBRS and AFPA Working Together to Generate a
  Commonwealth of MA Checklist

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Section 5310.1.1 Emergency escape window sizes
• Double-hung allowed at 3.3 sq. ft. and 20 H x
  24 W
• Ground floor windows at 5 sq. ft.
• Otherwise 5.7 sq. ft.

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EMERGENCY ESCAPE AND RESCUE OPENING

• EMERGENCY ESCAPE AND RESCUE OPENING. An
  operable window, door or similar device that
  provides for a means of escape and access for
  rescue in the event of an emergency.

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SECTION 5310 EMERGENCY ESCAPE AND RESCUE OPENING

• Basements with habitable space and every
  sleeping room shall have at least one openable
  emergency escape and rescue opening. Where
  basements contain one or more sleeping rooms,
  emergency egress and rescue openings shall be
  required in each sleeping room, but shall not be
  required in adjoining areas of the basement.

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Section 5311.5.3.1 .2 Stair Rise allowed to
  a max. of 8 1/4 inches
• Stair depth to a minimum of 9 inches

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Winders5311.5.3.2

• Minimum Tread Depth of Straight Run measured 12
  inches from narrow side
• Minimum Tread Depth of 3 inches
• 45o Winders allowed to be a minimum of 2 inches

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Section 5313 Incorporates requirements for
  smoke detectors, heat detectors, CO detectors and
  sprinklering of very large dwellings
• Locations for smoke detectors typically the same
  as in 6th Edition Code.

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LIFE SAFETY SYSTEMS SECTION 5313

• 5313.2 Household Fire-Warning Systems (smoke
  detectors)
• 5313.3 Heat Detectors
• 5313.4 Carbon Monoxide Detectors
• 5313.5 Sprinklers

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CHAPTER 51ADMINISTRATION FOR SINGLE AND
TWO-FAMILY DWELLINGS

• Section 5110.7
• Construction Documents
• Plans that include fire protection systems are
  to be forwarded to the Head of the Fire
  Department by the Building Official

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5313.4CARBON MONOXIDE DETECTORS

• ADDITIONAL AMENDING OF THIS CO SECTION IS
  REQUIRED GIVEN THE ADVENT OF C.123 OF THE ACTS OF
  2005 527 CMR 31 AND 248 CMR 5.00.
• CO Detectors shall be listed per UL 2034 and
  conform to NFPA 720.

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5313.5.1Dwellings Requiring Sprinklers

• An NFPA 13D system is required in new
  construction 1 2 Family Dwellings having an
  aggregate area greater than 14,400 sq. ft.
• (this would be a basement 1st floor 2cd floor
  of 4800 sq. ft. per floor)

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9304.8Smoke, heat detection and carbon monoxide
alarm systems

• When 1 or more sleeping rooms are added/created
  the entire existing building shall be provided
  w/smoke detectors, heat detector and CO detectors
  designed, located and installed in accordance
  w/the provisions for new construction.

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9304.8Smoke, heat detection and carbon monoxide
alarm systems-continued

• If the dwelling undergoes complete reconstruction
  (walls and ceilings open to framing) then the
  entire existing building shall conform to the
  Code for new cosntruction for smoke detectors,
  heat detector and CO detectors.

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9304.8Smoke, heat detection and carbon monoxide
alarm systems-continued

• If one dwelling (but not the other) of an
  existing 2-family dwelling has one or more
  sleeping rooms added, that existing dwelling unit
  shall conform to the Code for new construction
  for smoke detectors, heat detector and CO
  detectors.

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9304.8Smoke, heat detection and carbon monoxide
alarm systems-continued

• If the existing 2-family dwelling has one or more
  sleeping rooms added (in both dwelling units),
  then the entire 2-family building shall conform
  to the Code for new construction for smoke
  detectors, heat detector and CO detectors.

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5313.2.6 Acceptance Testing of Household Fire
Warning Systems

• All household fire warning systems shall be
  subject to a 100 acceptance test when complete.

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CHAPTER 53 (C3) HIGHLIGHTScontinued

• Section 5323 inclusive (SOME CORRECTIONS NEEDED
  HERE)
• Sets flood-resistant construction requirements
  expect modifications over time based on TACCEI
  inputs

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CHAPTER 61 (C11)HIGHLIGHTS

• Chapter 60 / Energy Conervation requirements
• Simplified Prescriptive method for thermal
  envelope compliance
• REScheck Version 3.7, Release 1b or later in lieu
  of earlier MAScheck or MECcheck software tools
  required
• Total energy analysis and renewable energy
  compliance defaults to current 6th Edition
  Chapter 13 methods

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PIPE PENETRATIONS THROUGH CONCRETE OR MASONRY
BUILDING ELEMENTS

• Such piping penetrations shall be sleeved
  Chapter 71, Section 7101.4

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PIPING PROTECTION AGAINST PHYSICAL DAMAGE

• Protective steel shield plates shall cover the
  pipe where the pipe is installed through holes or
  notches in studs, joists rafters or similar
  members less than 1.5 inches from the nearest
  edge of the member (cast-iron piping not
  requiring shield plates per C76, Section
  7601.2.1.

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GROUNDING OF FOOTING/FOUNDATIONSYSTEMS

• 527 CMR 12, the Massachusetts Electrical Code
  references the National Electrical Code and
  grounding of foundation systems containing rebar
  is now addressed and under certain circumstances
  required.

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CHAPTER 93 (C43)HIGHLIGHTS

• Chapter 93 is the Existing Buildings Chapter
• Approaches existing building permittable
  activities by regulating
• Repair or renovation Section 9304
• Alterations Sections 9304 9305
• Additions Sections 9304 and 9306

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9304.2NEW BUILDING SYSTEMS

• Any new building system shall conform to 780 CMR
  for new construction to the fullest extent
  practicable

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9305.8.4FIRE PROTECTION SYSTEMS

• Existing fire protection systems shall be
  permitted to remain w/o change provided such
  systems are in serviceable condition

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9308.1MOVED STRUCTURES

• Moved structures are permitted re-used at a
  different site provided that all new work
  associated w/moving the structure and making the
  structure habitable comply w/the Code for new
  construction to the fullest extent practicable.

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Wood Construction in High Wind Areas

• A sample prescriptive approach being developed by
  BBRS and AFPA with input from LAC

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SOME ELABORATION ON WIND DESIGN ISSUES, contd.

• Section 5802.11.1
• Uplift resistance
• Roof assemblies subject top wind uplift pressures
  of 20 PSF or greater shall have rafters or
  trusses attached to their supporting wall
  assemblies
• A continuous load path shall be provided from
  rafter/truss tofoundation

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Other Requirements

• Windows have to remain intact in regions where
  wind borne debris is a factor. This can be
  achieved with the use of structural shutters.
• Through judicious use of structural sheathing,
  the shutters can be constructed with the material
  that is cut from rough window and door openings.
• Siding, roofing, and other non structural
  elements on the building have enhanced connection
  attachments.

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Summary

• A High Wind Construction (MA version) Checklist
  is being developed.
• Will be available for public comment by May.
• Meanwhile you may view and download the AWC
  guides at http//awc.org/Standards/wfcm.htmlWFCMh
  ighwindguides

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AWC Span Tool

• If you search for this web site
• http//www.awc.org/calculators/span/calc
• on your computer

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780 CMR 7th. Ed. Chap 55FLOORS
TABLE 5502.5(1) GIRDER SPANS AND HEADERS SPANS
FOR EXTERIOR BEARING WALLS TABLE
5502.5(2) GIRDER SPANS AND HEADER SPANS FOR
INTERIOR BEARING WALLS
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• 780 CMR 6TH ed.
• SNOW LOADS

25 psf 30 psf 35 psf 40 psf
780 CMR 7th ed. GROUND SNOW LOADS
35 psf (10) 45 psf (15) 55 psf (20)
65 psf (25)
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TABLE 5502.5(1)
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TABLE 5502.5(2)
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WIND UPLIFT CONNECTIONS
780 CMR 7th ed. Section 5802.11.1 Roof Tie Down
53

• 5802.11 Roof Tie Down
• 5802.11.1 Uplift resistance. Roof assemblies
  which are subject to uplift pressures of 20
  pounds per square foot or greater shall have roof
  rafters or trusses attached to their supporting
  wall assemblies by connections capable of
  providing the resistance required in Table
  5802.11. Wind uplift pressures shall be
  determined using an effective wind area of 100
  square feet and the applicable wind zone in Table
  5301.2(2), as adjusted for height and exposure
  per Table 5301.2(3).
• A continuous load path shall be provided to
  transmit the uplift forces from the rafter or
  truss ties to the foundation.
• (In almost all instances, this is achieved in the
  form of approved connectors see IRC Sec. 802.11.1
  commentary)

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• NOTE!
• 5802.10.5. Truss to wall connection. Trusses
  shall be connected to wall plates by the use of
  approved connectors having a resistance to uplift
  of no less than 175 pounds and shall be installed
  in accordance with the manufacturers
  specifications.

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PRESSURE ZONESFig 5301.2(8)
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Please note that the following Power Point
presentation is solely intended as educational
material that is general in nature.  This is not
intended to be an exhaustive review of the
Department of Public Safetys laws and
regulations and is not intended to provide legal
advice.  Materials presented in this presentation
should not be considered a substitute for actual
statutory or regulatory language.  Always refer
to the current edition of a referenced statute,
code and\or regulation for precise language.