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Attachment 1: Specifications - Metropolitan Washington Airports ...

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DCA TERMINAL A IMPROVEMENTS (NEAR TERM) 10 AUGUST 2012<br />

TASK ORDER 03: LOBBY IMPROVEMENTS – PKG 4 - CURBSIDE CHECK-IN<br />

RONALD REAGAN WASHINGTON NATIONAL AIRPORT<br />

PROJECT DT1203<br />

SECTION 05 50 00 - METAL FABRICATIONS<br />

PART 1 - GENERAL<br />

1.1 SUMMARY<br />

A. Section Includes:<br />

1. Miscellaneous steel framing and supports.<br />

2. Miscellaneous steel trim.<br />

1.2 ACTION SUBMITTALS<br />

A. Product Data: For each type of product.<br />

B. Shop Drawings: Show fabrication and installation details for metal fabrications.<br />

1. Include plans, elevations, sections, and details of metal fabrications and their<br />

connections. Show anchorage and accessory items.<br />

PART 2 - PRODUCTS<br />

2.1 METALS, GENERAL<br />

A. Metal Surfaces, General: Provide materials with smooth, flat surfaces without blemishes.<br />

2.2 FERROUS METALS<br />

A. Steel Plates, Shapes, and Bars: ASTM A 36/A 36M.<br />

B. Steel Tubing: ASTM A 500, cold-formed steel tubing.<br />

C. Steel Pipe: ASTM A 53/A 53M, standard weight (Schedule 40) unless otherwise indicated.<br />

D. Slotted Channel Framing: Cold-formed metal box channels (struts) complying with MFMA-4.<br />

1. Size of Channels: 1-5/8 by 1-5/8 inches (41 by 41 mm) minimum.<br />

2. Material: Galvanized steel, ASTM A 653/A 653M, with G90 (Z275) coating; 0.108-inch<br />

(2.8-mm) minimum, nominal thickness.<br />

METAL FABRICATIONS 05 50 00 - 1

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