1 Hour Fire Rated Roof Ceiling Assembly

4 x 10 beams 8 o c.

1 hour fire rated roof ceiling assembly.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. O c double top plates single bottom plate. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. 2 x 4 f d rafters flat 16 o c.

Ceiling provides one hour fire resistance protection for framing including trusses. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Framing nominal 2x4 wood studs spaced 16 in. 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.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Urb concealed grid system and tile. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. W 2 x 4 24 o c.

You can use only the specific type size and. 2 1 3 4 2. Ul tests rate an entire assembly. No ceiling or suspension system product alone constitutes a fire rated assembly.

Over metal trusses 5 o c w 1 2 plywood live load 20lbs steel coating by others. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Fire rated wood frame wall and floor ceiling assemblies 5 ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251. See full report for details.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. Concrete with cellular steel 3 hr.

W 1 2 plywood beam span 10 live load 20lbs.