5 inch drywall duct penetration

Register now to start utilizing our full suite of powerful online tools to ensure your projects are efficient and compliant. The dimension from the bottom chord of joists to the ceiling, whether given or calculated, is a minimum. Systems complying with these requirements include an " XR " design prefix. Additionally, for steel joists and steel trusses the Restrained Beam Rating of the joist or truss being transferred should be equal to or greater than the Restrained Assembly Rating of the floor-ceiling assembly into which the joist or truss is being transferred. The first letter of the listing designation identifies the type of penetrated fire-rated structure: Hanger wires should be installed vertically unless permitted otherwise in a design.
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Threaded Firestop/Penetrator Systems

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Attached Garage Fire Containment

Unless otherwise noted in an individual design, the performance of angled walls or walls constructed in the horizontal position has not been investigated. Greater thicknesses of gypsum board are permitted as long as the fastener length is increased to provide penetration into framing that is equal to or greater than that achieved with the specified gypsum board thickness and fasteners. Open-web steel joists or steel beams, supporting precast units or metal decking. Wood Stud Wall Assemblies 9. The Load Restricted Factor should be applied to the factored resistance of all structural members or components, including, but not limited to, factored moment resistance M r , factored shear resistance V r , factored tensile resistance T r and factored compressive resistance C r. Nonmetallic Electrical Outlet Boxes. Gypsum board thicknesses specified in specific designs are minimums.
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Attached Garage Fire Containment - InterNACHI

Concealed Grid System — Ceiling-suspension system for acoustical material that is not visible from the occupied space. The joints in the finish layer should be finished as described in the design. All types of cast-in-place floor and roof systems such as beam-and-slabs, flat slabs, pan joists, and waffle slabs where the floor or roof system is secured to the framing members Restrained C. The average and minimum bond strength values should be determined based upon a minimum of five bond tests conducted in accordance with ASTM E When the length of the cross tee between the main runner and the wall molding is 30 in. Class A, B or C roof coverings consisting of hot-mopped or cold-applied bituminous materials or a roof-covering material certified under Roofing Membranes CHCI may be applied directly to the concrete or wood surface of floor designs being used as roofs without a reduction of fire-resistance ratings. Unless specifically detailed in the individual designs or in the product certification information, the impact of galvanization applied to structural steel members has not been investigated under fire-test conditions.
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Additional layers of gypsum board are permitted to be added to any design. Results from these tests are identified as Design Series Nos. Steel Roof Deck Fasteners Steel roof deck fasteners that have been investigated as part of a roof deck construction may be used to fasten the roof deck to steel joists or beams in lieu of welding or screws in fire-resistive assemblies. UL shall not incur any obligation or liability for any loss, expense or damages, including incidental or consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Guide Information. When duct outlets are sq in.
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