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Gateway Park Center PERKINS+WILL <br /> 810495.000 <br /> 12/06/18 <br /> <br /> <br />METAL FABRICATIONS <br /> 05 50 00 - 5 <br /> <br /> <br />2.5 FABRICATION, GENERAL <br />A. Shop Assembly: Preassemble items in the shop to greatest extent possible. <br />Disassemble units only as necessary for shipping and handling limitations. Use <br />connections that maintain structural value of joined pieces. Clearly mark units for <br />reassembly and coordinated installation. <br />B. Cut, drill, and punch metals cleanly and accurately. Remove burrs and ease edges <br />to a radius of approximately 1/32 inch unless otherwise indicated. Remove sharp or <br />rough areas on exposed surfaces. <br />C. Form bent-metal corners to smallest radius possible without causing grain <br />separation or otherwise impairing work. <br />D. Form exposed work with accurate angles and surfaces and straight edges. <br />E. Weld corners and seams continuously to comply with the following: <br />1. Use materials and methods that minimize distortion and develop strength and <br />corrosion resistance of base metals. <br />2. Obtain fusion without undercut or overlap. <br />3. Remove welding flux immediately. <br />4. At exposed connections, finish exposed welds and surfaces smooth and <br />blended so no roughness shows after finishing and contour of welded surface <br />matches that of adjacent surface. <br />F. Form exposed connections with hairline joints, flush and smooth, using concealed <br />fasteners or welds where possible. Where exposed fasteners are required, use <br />Phillips flat-head (countersunk) fasteners unless otherwise indicated. Locate joints <br />where least conspicuous. <br />G. Fabricate seams and other connections that are exposed to weather in a manner to <br />exclude water. Provide weep holes where water may accumulate. <br />H. Cut, reinforce, drill, and tap metal fabrications as indicated to receive finish <br />hardware, screws, and similar items. <br />I. Provide for anchorage of type indicated; coordinate with supporting structure. <br />Space anchoring devices to secure metal fabrications rigidl y in place and to support <br />indicated loads. <br />J. Where units are indicated to be cast into concrete or built into masonry, equip with <br />integrally welded steel strap anchors, 1/8 by 1-1/2 inches, with a minimum 6-inch <br />embedment and 2-inch hook, not less than 8 inches from ends and corners of units <br />and 24 inches o.c., unless otherwise indicated. <br />2.6 MISCELLANEOUS FRAMING AND SUPPORTS <br />A. General: Provide steel framing and supports not specified in other Sections as <br />needed to complete the Work.