2 Hour Fire Rated Roof Assembly

W 1 2 plywood span 17 live load 20lbs.

2 hour fire rated roof assembly.

Assemblies rated from both sides. Table 1 one hour fire rated loadbearing wood frame wall assemblies. V337 2 hour interior wall assembly ul design no. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. The lower roof assembly within 4 feet 1220 mm of the wall has not less than a 1 hour fire resistance rating and the entire length and span of supporting elements for the rated roof assembly has a fire resistance rating of not less than 1 hour. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Substrate roof floor ceiling time assembly ff file no.

722 6 2 1 fire resistance rating of wood frame assemblies. 2 x 10 rafters 24 o c. The fire resistance rating of a wood frame assembly is equal to the sum of. 2 fire rated wood frame wall and floor ceiling assemblies.

Concrete with cellular steel 3 hr. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Openings in the roof shall not be located within 4 feet 1220 mm of the fire wall. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.

3 mineral wool batts. Sheathing on both sides. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. 2x4 16 o c.

This section contains procedures for calculating the fire resistance ratings of walls floor ceiling and roof ceiling assemblies based in part on the standard method of testing referenced in section 703 2. A one hour rating would mean the structural elements have not yet reached their yield point when exposed to a under deck heat load defined in astm e119 for steel structural members as reaching 1 070 degrees f. 2 hour exterior wall assembly ul design no. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

5 8 type x gypsum wallboard h 2 6 type s drywall screws 12 o c. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies.