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Flat Drywall Suspesion Ceilings <br /> Roor/Ceiling UL Assembly Board Wallboard Core Fixture Size Max. Assembly Construction <br /> Design Rating• Thick. Type (96 of Fixtures) Duct Area Details <br /> No. per 100 sf <br /> Engineered Steel or P515 1 hr-R&UR 5/8" SHEemoce Fumcoov C N/A N/A Roof covering over mineral and fiber board <br /> Wood or Roof Truss two on steel roof deck over steel roof trusses <br /> layers @ 48"o.c.max. <br /> P521 2 hr-R&UR 5/8" SHEEmOCK FIRECODE C N/A N/A Roof covering over foamed plastic Insulation, <br /> two gypsum wallboard,steel deck on light-gauge <br /> layers steel trusses @ 48"o.c.max. <br /> P522 1 hr-UR 5/8" SHEEmocx FIRECODE C N/A 196 sq.in. Roof system over 15/32"plywood on wood <br /> trusses 0 24"o.c.max.@ 24"o.c.max. Pk, <br /> P523 1 hr-R&UR 5/8" SHEETROCK FIRECODE C N/A N/A Roof system over 23/32"plywood on .:'0 , <br /> light-gauge steel trusses @ 48"o.c.max. • - '''.1 <br /> P525 2 hr-R&UR 5/8" SHEETROCK FIRECODE C N/A N/A Roof membrane or metal roof deck on -' <br /> 114.44.-: <br /> two foamed plastic insulation,Dime Brand +,mom, <br /> layers Cement Board or gypsum wallboard over <br /> corrugated steel deck on light-gauge steel <br /> trusses @ 48"ac.max. rr <br /> P526 1 hr-R&UR 5/8" SHEETROCK FIRECODE C N/A N/A Roof system over 23/32"plywood or steel :m <br /> roof deck on light-gauge steel trusses <br /> 48"o.c.max. t;44. <br /> � r <br /> P527 1-1/2 hr- 5/8" SHEEmOCK FIRECODE C N/A N/A Roof covering or metal roof deck on <br /> R&UR foamed plastic insulation,Dunoac®Brand .1'-. '"0„,',-c.',1 <br /> Cement Board or gypsum wallboard over f, <br /> corrugated steel deck on light-gauge steel ,,,_, <br /> trusses @ 48"o.c.max. . s: <br /> °( <br /> P528 1 hr-R&UR 5/8" SHEETROCK FreCODE C N/A N/A Roof system over 23/32"plywood or steel <br /> roof deck on light-gauge steel trusses '. ,?z <br /> 48"o.c.max. "..1.0).04.,.- <br /> ,' <br /> P529 1-1/2 hr- 5/8" SHEETROCK FIRECODE C N/A N/A Roof covering or metal roof deck ona� • <br /> R&UR foamed plastic Insulation,Dtmoac®Brand $° <br /> Cement Board or gypsum wallboard over ' a„ <br /> 44 <br /> corrugated steel deck on light-gauge steel is,.,,, <br /> xa <br /> a <br /> trusses®48"o.c.max. p <br /> 4. <br /> P530 1 hr-R&UR 5/8" SHEEmocK Frimcoww C N/A N/A Roof system over 23/32"plywood or steel "- • K <br /> t <br /> roof deck on light-gauge steel trusses -`.t <br /> 48"o.c.max. <br /> P531 1 hr-UR 5/8" SHEETROCK FAIECODE C N/A 360 sq.in. Roof system over 15/32"plywood on wood . , <br /> trusses @ 24"ac.max. <br /> P534 1 hr-R&UR 5/8" SHEETROCK FrtEcoeE C N/A N/A Roof system over 23/32"plywood or steel <br /> roof deck on light-gauge steel trusses i <br /> ®48"o.c.max. <br /> r`' <br /> :e <br /> . <br /> 285 .•,-„,-, 1----th <br />