SECTION 051200 - STRUCTURAL STEEL FRAMING

Heavy Shapes: ASTM A6, Group 3 shapes with flanges thicker than 1-1/2 inches (12.5 mm), Group 4 shapes, and Group 5 shapes; welded built-up members with web or flange plates exceeding 1 1/2 inches (12.5 mm) in thickness. ................
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