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' 40-27 BUILDING STRUCTURAL STEEL FRAMING <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />2.7 SHOP CONNECTIONS <br />' A. High -Strength Bolts: Shop install high -strength bolts according to RCSC's <br />"Specification for Structural Joints Using ASTM A 325 or A 490 Bolts" for type of bolt <br />and type of joint specified. <br />' 1. Joint Type: Snug tightened, pretensioned, or slip critical. <br />B. Weld Connections: Comply with AWS D1.1/D1.1M and AWS D1.8/D1.8M for <br />tolerances, appearances, welding procedure specifications, weld quality, and methods <br />used in correcting welding work. <br />1. Assemble and weld built-up sections by methods that maintain true alignment of <br />axes without exceeding tolerances in AISC 303 for mill material. <br />' 2.8 SHOP PRIMING <br />' <br />A. Shop prime steel surfaces except the following: <br />1. Surfaces embedded in concrete or mortar. Extend priming of partially embedded <br />members to a depth of 2 inches. <br />2. Surfaces to be field welded. <br />3. Surfaces of high -strength bolted, slip -critical connections. <br />4. Surfaces to receive sprayed fire -resistive materials (applied fireproofing). <br />5. Galvanized surfaces. <br />B. Surface Preparation: Clean surfaces to be painted. Remove loose rust and mill scale <br />and spatter, slag, or flux deposits. Prepare surfaces according to the following <br />specifications and standards: <br />' <br />1. SSPC-SP 2, "Hand Tool Cleaning." <br />2. SSPC-SP 3, "Power Tool Cleaning." <br />C. Priming: Immediately after surface preparation, apply primer according to <br />manufacturer's written instructions and at rate recommended by SSPC to provide a <br />minimum dry film thickness of 1.5 mils. Use priming methods that result in full coverage <br />of joints, corners, edges, and exposed surfaces. <br />1. Stripe paint corners, crevices, bolts, welds, and sharp edges. <br />2. Apply two coats of shop paint to surfaces that are inaccessible after assembly or <br />' <br />erection. Change color of second coat to distinguish it from first. <br />' 2.9 GALVANIZING <br />A. Hot -Dip Galvanized Finish: Apply zinc coating by the hot -dip process to structural steel <br />according to ASTM A 123/A 123M. <br />' 1. Fill vent and drain holes that are exposed in the finished Work unless they <br />function as weep holes, by plugging with zinc solder and filing off smooth. <br />C06922.001.00 05 12 00 - 7 <br />05-22-14 <br />