Roof Deck Design Height Limit Lowered Railing

The top edge height may exceed 45 inches 114 cm provided the guardrail system meets all other criteria of paragraph b of this section see figure d 11 below.

Roof deck design height limit lowered railing.

Refer to the building code. They include the actual height of the rail above the deck the height above grade when a guardrail is required and important baluster spacing dimensions. Acceptable solutions e2 as1 8 5 membrane roofs and decks. Often older buildings may comply with the code under which they were constructed.

For decks and balconies that may serve as the roof to a room below and are exposed to the weather a waterproofing coating or membrane on the floor area will be required to seal and waterproof the area. 1910 29 b 1 the top edge height of top rails or equivalent guardrail system members are 42 inches 107 cm plus or minus 3 inches 8 cm above the walking working surface. Guards are required when then deck is 24 60 cm above grade. The minimum height of the railing varies based on the height of the deck.

Railings for residential decks require a height of 3 feet from the floor of the deck to the rail top surface as mandated by the irc. Commercial railings necessitate a higher railing at 42 inches as regulated by the ibc. We have also created separate illustrations for residential guards for the usa and canada depending on where you live. When exceeding this height the most feasible alternative is to consider it an accessory occupancy ibc 2012 505 2 and 508 2.

These deck railing height diagrams are a great reference for your design and building portfolio. Deck railings a minimum of 42 inches in height cannot exceed the height limit. Decks 24 to 5 10 180 cm need 36 guards and anything above 5 10 requires a 42 high railing. In new york city roofs balconies or terraces with slope of 2 4 12 or less and height of 22 feet or greater require railings per 2014 nyc building code section 1509 8.

All other residential zones.