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4 <br /> 2.8 FABRICATION <br /> A. Fabricate and finish metal roof panels and accessories at the factory to greatest extent <br /> possible,by manufacturer's standard procedures and processes and as necessary to <br /> fulfill indicated performance requirements. Comply with indicated profiles and with <br /> dimensional and structural requirements. <br /> B. Provide panel profile, including major ribs and intermediate stiffening ribs, if any, for <br /> full length of panel. <br /> C. Fabricate metal roof panel side laps with factory-installed captive gaskets or separator <br /> strips that provide a tight seal and prevent metal-to-metal contact, in a manner that will <br /> seal weathertight and minimize noise from movements within panel assembly. <br /> D. Sheet Metal Accessories: Fabricate flashing and trim to comply with recommendations <br /> in SMACNA's "Architectural Sheet Metal Manual" that apply to the design, <br /> dimensions,metal, and other characteristics of item indicated. <br /> 1. Form exposed sheet metal accessories that are without excessive oil canning, <br /> buckling, and tool marks and that are true to line and levels indicated,with <br /> exposed edges folded back to form hems. <br /> 2. End Seams for Other Than Aluminum: Fabricate nonmoving seams with flat-lock <br /> seams. Tin edges to be seamed,form seams, and solder. • <br /> 3. Sealed Joints: Form nonexpansion but movable joints in metal to accommodate <br /> elastomeric sealant to comply with SMACNA standards. <br /> 4. Conceal fasteners and expansion provisions where possible. Exposed fasteners <br /> are not allowed on faces of accessories exposed to view. <br /> 5. Fabricate cleats and attachment devices of size and metal thickness recommended <br /> by SMACNA's "Architectural Sheet Metal Manual" or by metal roof panel <br /> manufacturer for application,but not less than thickness of metal being secured. <br /> 2.9 FINISHES <br /> A. Comply with NAAMM's "Metal Finishes Manual for Architectural and Metal Products" <br /> for recommendations for applying and designating finishes. <br /> B. Protect mechanical and painted finishes on exposed surfaces from damage by applying <br /> a strippable,temporary protective covering before shipping. <br /> C. Appearance of Finished Work: Noticeable variations in same piece are not acceptable. <br /> Variations in appearance of adjoining components are acceptable if they are within the <br /> range of approved Samples and are assembled or installed to minimize contrast. <br /> SEWER LIFT STATION NO.24 REPLACEMENT PROJECT,UP 3313 <br /> Division 7 Thermal and Moisture Protection Page 07411-9 April 2012 <br />