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Gateway Park Center PERKINS+WILL <br /> 810495.000 <br /> 12/06/18 <br /> <br /> <br />STRUCTURAL-SEALANT-GLAZED CURTAIN WALLS <br /> 08 44 23 - 8 <br /> <br /> <br />1. Sealant shall have a VOC content of 250 g/L or less. <br />2.5 FABRICATION <br />A. Form or extrude aluminum shapes before finishing. <br />B. Weld in concealed locations to greatest extent possible to minimize distortion or <br />discoloration of finish. Remove weld spatter and welding oxides from exposed <br />surfaces by descaling or grinding. <br />C. Fabricate components that, when assembled, have the following characteristics: <br />1. Profiles that are sharp, straight, and free of defects or deformations. <br />2. Accurately fitted joints with ends coped or mitered. <br />3. Physical and thermal isolation of glazing from framing members. <br />4. Accommodations for thermal and mechanical movements of glazing and <br />framing to maintain required glazing edge clearances. <br />5. Provisions for field replacement of glazing from exterior. <br />6. Fasteners, anchors, and connection devices that are concealed from view to <br />greatest extent possible. <br />D. After fabrication, clearly mark components to identify their locations in Project <br />according to Shop Drawings. <br />2.6 ALUMINUM FINISHES <br />A. High-Performance Organic Finish: Three-coat fluoropolymer finish complying with <br />AAMA 2605 and containing not less than 70 percent PVDFresin by weight in both <br />color coat and clear topcoat. <br />1. Color and Gloss: Match existing curtainwall. <br />2.7 SOURCE QUALITY CONTROL <br />A. Structural Sealant: Perform quality-control procedures complying with <br />ASTM C 1401 recommendations including, but not limited to, assembly material <br />qualification procedures, sealant testing, and assembly fabrication reviews and <br />checks. <br />PART 3 - EXECUTION <br />3.1 INSTALLATION <br />A. General: <br />1. Comply with manufacturer's written instructions. <br />2. Do not install damaged components. <br />3. Fit joints to produce hairline joints free of burrs and distortion.