One Hour Rated Roof Membrane

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.

One hour rated roof membrane.

Membrane penetration firestop system an assemblage consisting of a fire resistance rated floor ceiling roof ceiling or wall assembly one or more penetrating items installed into or passing through the breach in one side of the assembly and the materials or devices or both installed to resist the spread of fire into the assembly for a. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Fire resistance ratings time temperature include structural elements and everything above including the roof membrane and its surfacing. Wood framed including dimensional lumber engineered joist and truss.

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and steel roof deck. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.

A one hour rating would mean the structural elements have not yet reached their yield point when exposed to a under deck heat load defined in astm e119 for steel structural members as reaching 1 070 degrees f. 2015 ibc inspection of fire resistance rated floors ceilings and roofs 33 section 711 2 4 3 exception horizontal assemblies separating dwelling and sleeping units shall be not less than hour fire resistance rated in buildings of types iib iiib. The ceiling membrane of 1 and 2 hour fire resistance rated horizontal assemblies is permitted to be interrupted with the double wood top plate of a fire resistance rated wall assembly provided that all penetrating items through the double top plates are protected in accordance with section 714 4 1 1 1 or 714 4 1 1 2. Urb concealed grid system and tile.

Helpful documents and resources for usg s roof assemblies can be found on this page. A one hour rating would see an internal heat load of 1600 degrees f. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Ul uses their steiner tunnel to establish under deck spread of flame.

Unit separations per 420 3 shall be not less than 1 hour fire resistance rated construction.