WebJan 19, 2024 · Hi RLGA, Because all of the 1 hour roof/ceiling assemblies I find require gypsum board or cement board over the steel deck. Looking for help on this question … Webfiber board. Min thickness of the polyisocyanurate core is 1.3 in. for the 1 hr rating without gypsum wallboard (Item 4) and for the 1-1/2 and 2 hr ratings with wallboard and 2.6 in. …

Appeals The City of Portland, Oregon

WebRoof Assembly — (Not Shown) - As an alternate to the floor assembly, a fire rated fluted steel deck roof assembly may be used. The roof shall by constructed of the materials and in the manner described in the individual P700 or P900-Series Roof-Ceiling designs in the UL Fire Resistance Directory. The hourly rating of the roof assembly shall ... WebThe hourly rating of the roof assembly shall be equal to or greater than the hourly rating of the wall assembly. The roof assembly shall include the following construction features: A. Steel Roof Deck — Max 3 in. (76 mm) deep galv steel fluted roof deck. B. Roof Insulation — Roof insulation to consist of min 2-1/4 in. (57 mm) thick poured ... hubble telescope pictures of black holes

Roof-Ceiling Assemblies, UL Fire Rated Roof Designs USG

WebJul 9, 2024 · Insulation needed for energy conservation and energy efficiency rating is known to affect the fire resistance-rating of the complete assembly. In some cases, the … WebRoof/Ceiling Wood-Framed - Georgia-Pacific Building Products. 5/8” (15.9 mm) ToughRock® Fireguard C® applied perpendicular to the resilient channels spaced 12” … http://dev2.cemcosteel.com/steel-framing/exterior-structural-curtain-wall/floor-ceiling/sure-span%C2%AE-ul-fire-rated-assemblies hubble telescope pictures by date