Massachusetts Building Code Decks

If positive connection to the primary building structure cannot be verified during inspection decks shall be self supporting. Decks shall not be attached to house overhangs bay windows brick veneers or chimneys.

Building A Code Compliant Deck Extreme How To

Any such guardrail replaced or constructed after August 28 1997 effective date of Massachusetts State Building Code Sixth Edition shall be not less than 34.

Massachusetts building code decks. Where structural design for buildings covered by the Massachusetts. Decks get wet and may be framed with incised treated lumber so spans may have to be adjusted. When I called my town they were very little help.

Decks not supported by a dwelling need not be provided with footings that extend below the frost line. B A wall or guardrail on the open side of all stairways no less than 30 inches in height. RAILING STEPS AND LANDING REQUIREMENTS FOR 1 2 FAMILY DWELLINGS AND COMMERCIAL 780 CMR 3603142 - Guardrails Guardrails are required for anything over 30 inches high.

The IBC requires 42 high guardrails. But the 2015 IRC included a new one Table R5075 that will make it easy for deck builders to spec a joist size for a given span and joist spacing. A footing framing and a final inspection are required on all decks.

Wood decks that are attached to the house to resist lateral forces. The IRC specifies that decking boards must be made from 2 x 6 lumber or composite boards with a minimum spacing of 18 inch between boards. Overall deck length shall be equal to or less than overall deck width.

Such attachment shall not be accomplished by the use of toenails or nails subject to withdrawal. The 2009 IRC has a new provision that gets specific about whats required to support a decks lateral load. Provisions of 780 CMR 1600 shall govern the structural design of buildings structures and portions thereof regulated by 780 CMR.

Where positive connection to the primary building structure. Decks supporting large concentrated loads such as hot tubs are beyond the scope of this document. In either case you are allowed to build taller guardrails as long as they conform to all other requirements stated in the code.

I want to build a deck off the back of my house and am having trouble really getting started. If your deck is more than 30 inches off the ground it requires guardrails or handrails. Building Deck in Massachusetts.

Deck designs that deviate from the conditions of this handout will require a specific plan submission and may require engineering. Here is a summary of some of the requirements. The table includes spans for common lumber species used for deck framing like southern pine Douglas.

16012 Massachusetts Building Code for One-and Two Family Dwellings. Footings shall not bear on frozen soil unless the frozen condition is permanent. 70 East Main St Norton MA 02766 PH.

Until a few years ago the IRC didnt have deck joist span tables. Where supported by attachment to an exterior wall decks shall be positively anchored to the primary structure and designed for both vertical and lateral loads as applicable. 508-285-0297 Disclaimer Government Websites by CivicPlus.

780 CMR 1600 is unique to Massachusetts 780 CMR 16010 GENERAL 16011 Scope. International Residential Code 2015 IRC 2015 Most popular sections Section R311 Means of Egress Section R403 Footings Section R507 Exterior Decks Section R301 Design Criteria Section R602 Wood Wall Framing R3012 Climatic and Geographic Design Criteria Section R302 Fire-Resistant Construction Section R305 Ceiling Height Section R310 Emergency Escape and Rescue Openings Section R802. The deck ledger must be a 2x8 minimum.

Minimum post size is 6x6 nominal and maximum post height shall be in. The deck we build in this article is approximately 20 inches off the ground and as a result is not required by code to have a railing system on the steps or deck. If you are building into the side of a steep hill or beside a retaining wall you will have to maintain the minimum distance to grade not only vertically but also laterally.

Many localities allow the use of 1 14-inch ip or teak boards but its best to check first. See DECK FRAMING PLAN for definition of deck length and width. Decks not exceeding 200 square feet 1858m2 in area that are not more than 30 inches 762 mm above grade at any point are not attached to a dwelling and do not serve the exit door required by Section R3114.

Massachusetts State Building Code. Decks The 8th edition of the Massachusetts State Building Code provides a prescriptive table for ledger board attachment of decks. Contact the LeeLenox Building Department if you are not sure if one of the exemptions applies to your project.

The owner preferred an open no-railing look. It must be secured to the end of each joist with three 10 x 3-inch screws or nails. Commercial decks attached to multi-family buildings such as apartment buildings or businesses are regulated under the International Building Code IBC.

I have some books on deck plans but want to try to follow the rules and get a permit and make sure I build it to code. A A safe handrail for every stairway that is used or intended for use by the occupant as required by 780 CMR.