1 Hour Fire Rated Roof Assembly

Helpful documents and resources for usg s roof assemblies can be found on this page.

1 hour fire rated roof assembly. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Generally there are two types of 1 hour wood truss assemblies. O c double top plates single bottom plate. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.

See full report for details. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. The first is one layer gwb with metal furring strips or resilient channel and the second is two layers gwb board. 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. 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. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

1 page august 26 2020 ultraply tpo roof systems tested assembly guide august 2020 it is the responsibility of the user of this document to verify the included assemblies in the charts below with the associated firm s ul fm etc. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. The listed assemblies in this document may not contain all components of the approved assembly. 2 1 3 4 2.

Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1. Framing nominal 2x4 wood studs spaced 16 in. Assemblies include ducts dampers lighting or other fixtures in the tested 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.