2 Hour Fire Rated Roof Assembly

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.

2 hour fire rated roof assembly.

Sheathing on both sides. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies. Openings in the roof shall not be located within 4 feet 1220 mm of the fire wall. Substrate roof floor ceiling time assembly ff file no.

W 1 2 plywood span 17 live load 20lbs. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Urb concealed grid system and tile.

Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. Concrete with cellular steel 3 hr. 5 8 type x gypsum wallboard h 2 6 type s drywall screws 12 o c. V337 2 hour interior wall assembly ul design no.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. The fire resistance rating of a wood frame assembly is equal to the sum of. 3 mineral wool batts. Table 1 one hour fire rated loadbearing wood frame wall assemblies.

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. 722 6 2 1 fire resistance rating of wood frame assemblies. 2 x 10 rafters 24 o c. 2 hour exterior wall assembly ul design no.

Assemblies rated from both sides. 2x4 16 o c. 2 fire rated wood frame wall and floor ceiling assemblies. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 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.