1 Hour Rated Roof

Two layers 5 8 15 9 mm densglass fireguard sheathing applied vertically to min.

1 hour rated roof.

These listings are short summaries to serve as a. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. 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. 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.

Resist eight cycles of a gas flame turned on and off. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

In the florida building code 2014 section 1505 1 roof assemblies rated for a fire classification need to be tested to astm e 108 or ul790. 3 1 2 89 mm corrosion resistant 20 gauge 30 mils steel studs 24 610 mm o c. Roofing with a class c rating is able to. Experience maximum flame spread of 13 feet.

Base layer attached with 1 25 mm type s 12 corrosion resistant bugle head screws 8 203 mm o c. Urb concealed grid system and tile. A recent building official stated. Concrete with cellular steel 3 hr.

Class c roofing provides only light fire protection. Customer service sales 1 800 950 3839 technical support 1 800 usg 4you product safety hotline 1 800 507 8899. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. A similar section exists for ibc 2015.

The roof panel construction must have a 1 hour fire rating and shall be non combustible. No minimum joist size is given except that it needs to be adequate for structural loads. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. Last 1 hour before ignition.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Face layer attached with 1 5 8 41 mm type s 12 corrosion resistant bugle head screws spaced 8. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c.