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The law requires that a relevant fire risk assessment is made and maintained to identify all potential hazards and associated risks throughout the life and use of the building, and that all actions taken are recorded. Unprotected Floors and Roofs 2. For load-bearing steel studs, the minimum bare-metal thickness should be as follows: When the second option is employed, it is not necessary to protect penetrations, door and window opening, or ducts and air-transfer openings into or through the non-fire-rated wood stud wall assembly. Unless specifically prohibited in the individual designs, materials identified as Spray-applied Fire-resistive Materials CHPX may be applied to galvanized, primed or similarly painted wide-flange steel shapes and pipe and tube-shaped columns provided:
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FIRE-RESISTANCE DESIGN

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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. Furring channel along each side of ceiling control joint to be located with its centerline 3 in. A the beam flange width does not exceed 12 in. Beams securely fastened to the framing members Restrained B. When a test assembly complies with the acceptance criteria, a detailed description of the assembly, its performance in the fire test, and other pertinent details such as specification of materials, certification coverage and alternate assembly details are included in a Report for the test sponsor. What effect will arise from variations of duct geometry and orientation on test results?
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When it is the intent to only maintain the existing Assembly Rating, the beams from A, D, G, J and P Series designs may be substituted for the tested beam, provided that: The access panel assembly includes the panel, the mounting frame, the fixings holding the panel in the frame, the fixings fastening the mounting frame to the duct and any seals. The maximum allowable total load develops a tensile stress of approximately 30 ksi. Each channel with its web oriented vertically should be placed on top of and perpendicular to the joist's bottom chord and tied thereto with a double strand of 18 SWG galvanized steel wire. All types of prefabricated floor or roof systems where the structural members are secured to such systems and the potential thermal expansion of the floor or roof system is resisted by the framing system or the adjoining floor or roof construction b Restrained IV. All types of cast-in-place floor or roof systems, such as beam-and-slabs, flat slabs, pan joists, and waffle slabs, where the floor system is cast with the framing members. 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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Can intumescent paints be used to protect beams and columns where external cladding systems are intended to be abutted to the steel surfaces? Beam ratings depend upon the type of floor or roof the beam is supporting and the protection on the floor or roof units, as well as the type and thickness of protection material applied to the beam. Decks that are galvanized, painted or primed bearing the UL Certification Mark may also require the installation of lath to the deck. It is not required that these design numbers appear in the individual company's certification found in BZJZ. In this case, when a certified ceiling damper is used, the allowable outlet area per sq ft of ceiling area should be established on the basis of half the area of the individual maximum size. What actions should be taken when improper fire resisting duct mounting is evident?
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