Fire Rated Roof Ceiling Assemblies

Building code requirements.

Fire rated roof ceiling assemblies. Fire rated wood frame wall and floor ceiling 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. Two types of fire rated construction assemblies pertain to acoustical ceiling systems. Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements.

Openings penetrations joints and duct air openings must be protected. Fire partitions must extend from the top of the floor below to the underside of the floor or roof sheathing or to the underside of the fire resistance rated floor ceiling or roof ceiling assembly above. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. 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.

Urb concealed grid system and tile. Ibc item 4 or item 5 would allow use of assemblies tested as floor ceiling or roof ceiling in the other application even if not specified as such in the listing based upon rational design provided to the building official. Roof ceiling assemblies ceiling system lighting hvac outlets and other penetrants through the ceiling the plenum roof support structure and roof assembly including deck insulation and roofing system. Concrete with cellular steel 3 hr.

Roof ceiling 1 hour 2 x 4 1 1 2 wide wood web trusses 24 o c 5 8 t g plywood r 30 fiberglass insulation 1 1 2 x 25 gauge hat channel w 1 layer 1 2 sheet rock. 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. Helpful documents and resources for usg s roof assemblies can be found on this page. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

Ul tests rate an entire assembly. You can use only the specific type size and. However floor ceiling designs that specify a finish floor are typically not used as roof ceiling 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.