Roof Deck Exiting Requirements Fbc

Overlap to be a minimum of 3 inches 76 mm.

Roof deck exiting requirements fbc.

Underlayment in the 7th edition 2020 florida building code building fbcb and the florida building code residential fbcr have been strengthened. Minimum number of exits or access to exits per story. Where located as part of an accessible route turnstiles shall have not less than 36 inches 914 mm clear at and below a height of 34 inches 864 mm not less than 32 inches 813 mm clear width between 34 inches 864 mm and 80 inches 2032 mm and shall consist of a mechanism other than a revolving device. The new underlayment requirements are consistent with those recommended by the insurance institute for business and home safety ibhs to create a sealed roof deck srd.

Sstd 12 astm e 1886 and astm e 1996 or miami dade pa 201 202 and 203. Drip edge at eaves shall be permitted to be installed either over or under the underlayment. Table 201 1 are deemed to comply with the requirements of section 507 2 2 511 5 of the 2004 florida building code existing building. The florida building code adopts by reference the florida fire prevention code as adopted by the state.

Board roof decking secured with at least two 8d nails into roof framing members shall be deemed to be sufficiently connected. There may however be a local requirement for free egress from unoccupied roofs so it s best to check with the local code official. Board roof decking secured with smaller fasteners. Provide drip edge at eaves and gables of shingle roofs.

Free egress from the roof to the stairwell is required for occupied roofs but is not mandated by the ibc or nfpa 101 for unoccupied roofs. When replacing roofing the existing wood roof deck may have to be re nailed in accordance with the current provisions of chapter 16 high velocity hurricane zones of the florida building code building. A single exit or access to a single exit shall be permitted in accordance with section 1006 3 2. The required number of exits or exit access stairways or ramps providing access to exits from any story or occupied roof shall be maintained until arrival at the exit discharge or a public way.

The roof deck is usually concealed prior to removing the existing roof system 3.