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(a) Except as provided in paragraphs (b), (c), (d), and (e) the design, fabrication and erection of cold- formed structural steel members shall be in accordance with the requirements of the following document: Specification for the Design of Cold-Formed Steel Structural Members, AISI, 1986 Edition.
(b) Cold-formed individual structural members whose thickness is less than 0.125 inches, shall not be used to support more than 200 square feet of roof, floor or wall area.
(c) Except for steel roofing and siding, cold- formed steel members exposed to the weather or a corrosive atmosphere shall have a minimum thickness of 0.23 inches.
(d) Members, except for types of steels that have been specifically approved for use under exposure to weather without metal protection, shall be protected by an approved rust-inhibitive coating unless embedded in concrete. Members exposed to the weather or a corrosive atmosphere shall be galvanized, or have two coats of a rust-inhibitive paint.
(e) Steel deck construction using composite cold- formed steel deck concrete slabs and noncomposite concrete slabs on cold-formed steel decks shall comply with the requirements of Section 13-148-100 of this Code.
(1) Composite steel deck construction is defined as a system comprised of conventional or light- weight structural concrete placed permanently over cold-formed steel decking in which the steel deck performs the dual role of acting as a form for the concrete during construction and as positive moment reinforcement for the slab during service.
(Prior code § 74-2; Amend Coun. J. 4-12-91, p. 32356)