Roof Ceiling Fire Rated Assemblies

Overview 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.

Roof ceiling fire rated assemblies.

722 6 2 1 fire resistance rating of wood frame assemblies. As explained there these ratings are applied to certain types of roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. If you are unfamiliar with ul fire resistance ratings begin with a review of meeting code requirements pg.

Floor ceiling. Urb concealed grid system and tile. Meet astm e1264 class a rating. Roof floor ceiling time assembly ff file no.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Concrete with cellular steel 3 hr. Only fire guard products can be used in fire rated assemblies and are idenfified with the fire guard icon. The reduction can also apply when code allows for a corridor wall to be a 30 minute assembly.

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. As applied to 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. The fire resistance rating of a wood frame assembly is equal to the sum of the time assigned to the membrane on the fire exposed side the time assigned to the framing members and the time assigned for additional contribution by other protective measures such as insulation.

Helpful documents and resources for usg s roof assemblies can be found on this page. 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 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Have a question about assemblies. These assemblies need to meet fire and smoke safety and environmental sustainability requirements. 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.