1 Hour Rated Roof

Face layer attached with 1 5 8 41 mm type s 12 corrosion resistant bugle head screws spaced 8.

1 hour rated roof.

Roofing with a class c rating is able to. A recent building official stated. Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm.

A similar section exists for ibc 2015. Concrete with cellular steel 3 hr. Two layers 5 8 15 9 mm densglass fireguard sheathing applied vertically to min. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.

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. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. The roof panel construction must have a 1 hour fire rating and shall be non combustible. Urb concealed grid system and tile.

Customer service sales 1 800 950 3839 technical support 1 800 usg 4you product safety hotline 1 800 507 8899. Ul p533 roof ceiling one layer 5 8 15 9 mm fire shield c ga rc 2603 wallboard attached to 1 2 12 7 mm resilient furring channel spaced 12 o c. 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. Pressure treated shakes and shingles are the most common roofing materials to fall under the class b rating.

Base layer attached with 1 25 mm type s 12 corrosion resistant bugle head screws 8 203 mm o c. 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. Resist eight cycles of a gas flame turned on and off. Class c roofing provides only light fire protection.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. These listings are short summaries to serve as a. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.

1 hour rating floor or roof 24 oc min 12 depth 2 layers 1 2 type x gypsum sheathing min 15 32 wh tsc fca 45 02 wh tsc fca 45 04 ga fc5512 nominal 2x3 24 oc min 10 depth truswal metal truss plates 1 layer 5 8 type x gypsum sheathing min 3 4 nominal 2x3 24 oc min 10 depth. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. Last 1 hour before ignition.