2 Hour Fire Rated Roof Assembly

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

2 hour fire rated roof assembly.

Sheathing on both sides. Substrate roof floor ceiling time assembly ff file no. 5 8 type x gypsum wallboard h 2 6 type s drywall screws 12 o c. Table 1 one hour fire rated loadbearing wood frame wall assemblies.

Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system. V337 2 hour interior wall assembly ul design no. Urb concealed grid system and tile. Openings in the roof shall not be located within 4 feet 1220 mm of the fire wall.

Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. 2 hour exterior wall assembly ul design no. 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. 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.

2 fire rated wood frame wall and floor ceiling assemblies. 3 mineral wool batts. 2x4 16 o c. The fire resistance rating of a wood frame assembly is equal to the sum of.

Concrete with cellular steel 3 hr. 2 x 10 rafters 24 o c. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies. Assemblies rated from both sides. 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.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. W 1 2 plywood span 17 live load 20lbs.