Fire Rated Wood Roof Assembly

2 x 6 f d joists 16 o c.

Fire rated wood roof assembly. Wall finishes and their ratings. Fire resistance rated truss assemblies a fire resistance rating may be mandated by code for some of the assemblies where metal plate connected wood trusses are used. Helpful documents and resources for usg s roof assemblies can be found on this page. Urb concealed grid system and tile.

For occupancies such as stores apartments of fices and other commercial and industrial uses build ing codes commonly require floor ceiling and wall assemblies to be fire resistance rated in accordance with standard fire tests. W 1 x 8 wood planking 2 layers 1 2 plywood span 10 live load 40lbs. Refer to our roof ceiling assembly documents which includes ul fire rated roof assemblies for easy guidance through the assembly of a roof or ceiling on your next project. When they are you get 20 minutes in a wall and 10 minutes with floor and roof joists.

Substrate roof floor ceiling time assembly ff file no. 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. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Fire resistance rated truss assemblies.

Where the room side fire resistance rated membrane of the corridor is carried through to the underside of the floor or. Concrete with cellular steel 3 hr. The reluctance to rely on approved test results is unwarranted as explained in section 17a and section 17b of sbca s metal plate connected wood truss handbook. Fire rated wood frame wall and floor ceiling assemblies.

Fire protection rating is calculated from the flame side of the assembly and of course some assemblies have multiple flame sides. Your wood framing members are required to be not more than 16 on center. 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. Roof sheathing slab or deck above or to the fire resistance rated floor ceiling or roof ceiling assembly above and shall be securely attached thereto.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.