1 Hour Fire Rated Roof Ceiling Assembly

Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1.

1 hour fire rated roof ceiling assembly.

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

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. 2 1 3 4 2. Assemblies include ducts dampers lighting or other fixtures in the tested 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.

Ceiling provides one hour fire resistance protection for framing including trusses. Over metal trusses 5 o c w 1 2 plywood live load 20lbs steel coating by others. Framing nominal 2x4 wood studs spaced 16 in. Urb concealed grid system and tile.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling 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. W 1 2 plywood beam span 10 live load 20lbs. 2 x 4 f d rafters flat 16 o c.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Concrete with cellular steel 3 hr. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. W 2 x 4 24 o c. See full report for details.

Ul tests rate an entire assembly.