1 Hour Fire Rated Roof Eave Detail

Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits.

1 hour fire rated roof eave detail. A b 2 feet to 5 feet not fire resistance rated 0 hours 5 feet openings in walls. Not allowed n a 3 feet 25 maximum of wall area per story. 6 usg fire resistant assemblies test certification test conditions and fire and sound tested assemblies listed in this selector are based on characteristics properties and performance certificationof materials and systems obtained under controlled test conditions as set forth in the appropriate astm standard in effect at the time of test. 1 hour rated wall and protected eave overhang soffit board 1 2 cdx ply 2 x 4 block 2x framing 5 8 type x gypsum sheathing siding 5 8 type x gypsum wallboard structural sheathing as required fascia approved roof covering alternate.

These listings are short summaries to serve as a. Roof eave fire resistance rating shall be permitted to be reduced to 0 hours on the. Fire resistance rated 1 hour on the underside. A minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking.

Fire resistance rating minimum fire separation distance not allowed n a 2 feet fire resistance rated 1 hour on the underside a b 2 feet to 5 feet projections not fire resistance rated 0 hours 5 feet n a not applicable. 1 hr fire rated construction with no openings. Roof eave fire resistance rating shall be permitted to be reduced to 0 hours on the underside of the eave if. However a detached garage structure may have a 4 maximum eave.