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(a) Except as provided in paragraphs (b) and (c), the design, fabrication and erection of structural steel shall be in accordance with the requirements of the following document: Structural Steel Buildings – Allowable Stress Design and Plastic Design, AISC, 1989 Edition or Load and Resistance Factor Design Specification for Structural Steel Buildings, AISC, 1986 Edition.
(b) Members of structural steel that are exposed to the weather or a corrosive atmosphere shall have a minimum thickness of 0.23 inches and shall receive another coat of metal protection of another color after erection, except for types of structural steels that have been specifically approved for use under exposure to the weather without metal protection.
(c) The requirements of the above document do not apply to steel joist construction and members formed of cold formed steel.
(Prior code § 74-1; Amend Coun. J. 11-29-89, p. 8274; Amend Coun. J. 4-12-91, p. 32356)