TrusSteel trusses are classified by Underwriters Laboratories, Inc. as to their fire resistant properties. The following designs can be downloaded and viewed using Acrobat Reader. If you do not have Reader previously installed, you may download it free by clicking the Acrobat icon at the bottom of this page.
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UL Design Number Click to View Documentation	Product(s)	Rating
P525	Restrained Roof/Ceiling AssemblyUnrestrained Roof/Ceiling Assembly	1, 1 1/2 & 2 hours1, 1 1/2 & 2 hours
P526	Restrained Roof/Ceiling AssemblyUnrestrained Roof/Ceiling Assembly	1 hour1 hour
L551	Unrestrained Floor/Ceiling AssemblyUnrestrained Beam	1 hour1 hour
G542	Restrained Floor/Ceiling AssemblyUnrestrained Floor/Ceiling AssemblyUnrestrained Beam	1 hour1 hour1 hour

Specific designs can be obtained from Underwriters Laboratories, Fire
Code and Technical Services Division.

Underwriters Laboratories, Inc.
(UL) is an independent safety testing and certification organization.
UL is not affiliated with Pacific Panel & Steel Truss and does
not endorse this Web site.