Floor ceiling.
Roof ceiling fire rated assemblies.
Two types of fire rated construction assemblies pertain to acoustical ceiling systems.
Roof ceiling assemblies ceiling system lighting hvac outlets and other penetrants through the ceiling the plenum.
3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.
Fire partitions shall extend from the top of the foundation or floor ceiling assembly below to the underside of the floor or 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.
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.
The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.
Concrete with cellular steel 3 hr.
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.
2 x 10 16 o c span 12 14 live load 40lbs w 3 4 wood sheathing ceiling 3 8 gwb.
Helpful documents and resources for usg s roof assemblies can be found on this page.
Floor ceiling assemblies ceiling system lighting hvac outlets and other penetrants.
Have a question about assemblies.
These assemblies need to meet fire and smoke safety and environmental sustainability requirements.
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.
Roof floor ceiling time assembly ff file no.
Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements.
Ul tests rate an entire assembly.
2 x 8 16 o c span 12 live load 40 lbs w 3 4 t g plywood ceiling 1 2 non rated gwb.
Fire rated assemblies are tested and certified in their entirety.
722 6 2 1 fire resistance rating of wood frame assemblies.
No ceiling or suspension system product alone constitutes a fire rated assembly.
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.
