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2003.8.3 Nonstructural Aluminum Decking and Siding
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Nonstructural aluminum sheets shall have a minimum thickness of 0.032 inches (0.8 mm).
Nonstructural decking and siding shall be attached as set forth in Section 2003.8.2 except that the attachment of aluminum residential siding shall be by rational analysis and/or tests using a minimum 0.120-inch (3 mm) diameter aluminum nails of sufficient length to penetrate studs a minimum of 2 inches (51 mm). Nails at wood studs shall be as required by rational analysis and/or tests, but spaced not greater than 24 inches (610 mm) on center horizontally and no greater than 8 inches (203 mm) on center vertically.