1 Hour Fire Rated Roof Ceiling Assembly

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.

1 hour fire rated roof ceiling assembly. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1. Ceiling provides one hour fire resistance protection for framing including trusses. You can use only the specific type size and. Urb concealed grid system and tile.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. See full report for details. 2 1 3 4 2. Assemblies include ducts dampers lighting or other fixtures in the tested assembly.

W 1 2 plywood beam span 10 live load 20lbs. W 2 x 4 24 o c. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. Over metal trusses 5 o c w 1 2 plywood live load 20lbs steel coating by others.

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. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.

No ceiling or suspension system product alone constitutes a fire rated assembly. Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements. Concrete with cellular steel 3 hr. O c double top plates single bottom plate.

Ul tests rate an entire assembly. With 1 2 wood structural panels with exterior glue applied at right angles to top of joist or top chord of trusses with 8d nails. Framing nominal 2x4 wood studs spaced 16 in. 4 x 10 beams 8 o c.

2 x 4 f d rafters flat 16 o c.