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Ul-roof-ceiling-assembly, monokote products: ul designs & thickness — roof assemblies we are inspired to influence how the world is built. we are dedicated to the development of high-performance products, the continued pursuit of advancement in construction technologies, simplifying the complexities of construction worldwide and delivering value to our customers.. Truss assembly applicable ul rated roof/ceiling listings characteristics p544 p531 p538 p522 ul fire resistance rating standard ansi/ul 263 same as p544 same as p544 same as p544 ansi/ul 263, layer 3 - trusses: pitched or parallel chord wood trusses, spaced 24" max. o.c., fabricated from nom. 2x4 lumber, oriented vertically or horizontally..

Ul p561. ul's p561 roof assembly allows for a 1, 1-1/2, or 2 hour configuration using either a hot-mopped or cold applied roof membrane and sure-span's steel framing joist system., question: i am looking for a 1-hour roof/ceiling assembly for wood truss construction. i would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.. Find the right fire-rated assemblies and design details drawings for your architectural plans. estimate materials and find usg equivalents for your building projects., around the globe, we help customers, purchasers and policymakers navigate market risk and complexity.our offerings expertly address business needs and industry challenges.our strategic solutions address complex, multifaceted problems, while our targeted services tackle specific concerns..

1 scope. 1.1 these requirements cover fire test methods to evaluate the performance of metallic and nonmetallic roof deck constructions subjected to internal (under deck) fire exposures for the purpose of determining the contribution of the roof covering material, insulation, and other components of the roofing system to the spread of fire within a building., code authorities count on ul’s technical expertise to provide certification services, cutting edge research, and the technical support needed to provide code compliant installations..

Most armstrong ceilings are rated class a for fire safety as evaluated by astm e84 and astm 119 test methods.