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2003.8 Fabrication and Construction Details

2020 FBC - Building, 7^th edition > 20 Aluminum > 2003 High-Velocity Hurricane Zones—Aluminum > 2003.8 Fabrication and Construction Details

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2003.8.1 Connections

Aluminum members shall be designed as set forth in the standards in Section 2003.2.

2003.8.1.1 Fasteners

Bolts and other fasteners shall be aluminum, stainless steel, hot-dip or electro-galvanized steel. Double cadmium plated steel bolts may also be used.

Aluminum parts shall be welded with an inert-gas-shielded arc or resistance welding process. No welding process that requires a welding flux shall be used. Filler alloys complying with the requirements of the standard in this chapter shall be used.

2003.8.1.4 Welder Qualifications

All welding of structural aluminum member shall be performed by certified welders.

2003.8.1.5 Erection

During erection, structural aluminum shall be adequately braced and fastened to resist dead, wind and erection loads.

2003.8.2 Structural Aluminum Decking and Siding

2003.8.2.1

Aluminum sections spanning between supports shall be limited in span to satisfactorily support the positive and negative loads set forth in Chapter 16 (High-Velocity Hurricane Zones). The deflection of decking shall not exceed that set forth in Section 1616.

2003.8.2.2

Aluminum sheet used for roof decking or siding shall be not less than 0.032 inch (0.8 mm) in thickness.

2003.8.2.3

Aluminum sheets shall be secured to the supports to adequately resist positive and negative loads. Attachments shall be at intervals not exceeding 8 inches (203 mm) on center and shall be secured to each other at side laps at intervals as required by rational analysis and/or tests, but shall not exceed 12 inches (305 mm) on center.

2003.8.2.4

Fasteners shall have a head, and/or be provided with washers not less than ¹/₂inch (13 mm) in diameter.

2003.8.2.5

Fasteners located at end laps shall be placed not more than 2 inches (51 mm) nor less than 1 inch (25 mm) from the end of overlapping sheets.

2003.8.2.6

Where roof or wall cladding is of aluminum, an approved membrane to protect against water intrusion to the interior shall be provided or the aluminum cladding shall be designed and constructed with an approved continuous edge-interlock, overlap or seam to prevent water intrusion.

2003.8.3 Nonstructural Aluminum Decking and Siding

2003.8.3.1

Nonstructural aluminum sheets shall be backed with cladding as set forth in Chapters 23 and 24 (High-Velocity Hurricane Zones).

2003.8.3.2

Nonstructural aluminum sheets shall have a minimum thickness of 0.032 inches (0.8 mm).

2003.8.3.3

Reserved.

2003.8.3.4

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.