Fire Rated Roof Ceiling Assemblies

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.

Fire rated roof ceiling assemblies.

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. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Meet astm e1264 class a rating. 2 x 10 16 o c span 12 14 live load 40lbs w 3 4 wood sheathing ceiling 3 8 gwb.

Only fire guard products can be used in fire rated assemblies and are idenfified with the fire guard icon. Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements. Fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Urb concealed grid system and tile.

Benefits of fire guard ceilings and grid. 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. Helpful documents and resources for usg s roof assemblies can be found on this page. Have a question about assemblies.

Floor ceiling. 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. Fire rated wall floor and ceiling assemblies provide the necessary fire and smoke barriers to create compartmentalization during a fire safeguarding against the spread of fire and smoke within a building or to and from a building. 722 6 2 1 fire resistance rating of wood frame assemblies.

Fire guard ceilings and grid systems are designed to provide enhanced resistance against structural failure. Roof floor ceiling time assembly ff file no. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. These assemblies need to meet fire and smoke safety and environmental sustainability requirements.

2 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb. Ul tests rate an entire assembly. You can use only the specific type size and minimum. The fire resistance rating of a wood frame assembly is equal to the sum of.

No ceiling or suspension system product alone constitutes a fire rated assembly. Concrete with cellular steel 3 hr.