What constitutes a 2-hour fire wall?

Gypsum Board: Two (2) hour rated walls have two (2) layers of 5/8″ Type ‘X’ gypsum wallboard panels on each side of the steel studs. The “Fire Tape” product would be used as an alternative to conventional joint tape in specific systems when: 3.

What is a UL wall?

The UL Certification Mark on fire resistant products, systems and assemblies is relied on by code enforcement officials and buyers to provide confidence that products and systems meet regulatory and market requirements. It is a key differentiator for products within the exterior wall assembly market.

How thick is a 2-hour fire-rated wall?

A 2-hour rating can be achieved by a wall with an equivalent thickness of as little as 3 1/5 inches when expanded slag or pumice is used or 4 1/2 inches when siliceous gravel is used as the aggregate.

How are UL wall assemblies used in construction?

USG provides resources here for our UL wall assemblies for seamless integration into any construction project. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. Have a Question About Assemblies?

How big is a fire rated ul wall?

These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. Have a Question About Assemblies? Steel Studs: 3-5/8″ Steel Studs, EQ25 (0.019″), Spaced 24″ O.C. Wood Studs: 2×4 Wood Studs, 16″ O.C. Wood Studs: 2×4 Wood Studs, 16″ O.C.

What is the LP 2 hour party wall assembly?

An evaluation has been performed of the Louisiana-Pacific (LP) 2 hour party wall assembly described in Underwriter’s Laboratories Design No. U350 (Configuration B) and the conformity of UL Design No. U338 as a party wall attic fire separation. The intent of this evaluation is two-fold.

Where can I find the UL fire resistance Directory?

These designs are identified in the UL Fire Resistance Directory, which is updated yearly and can be referenced at the Underwriters Laboratories website at ul.com. For additional information on USG fire-rated assemblies, CAD, BIM content and specifications, visit USG Design Studio at usgdesignstudio.com.

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