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<br />CITY OF SOUTH BEND <br />STUDEBAKER NATIONAL MUSEUM <br />SKYLIGHT REPLACEMENT TRANSLUCENT SKYLIGHTS 08952-5 <br />and with the following characteristics: <br />1) Flammability for Interior Face Sheet: Flame spread no greater than 20 and smoke <br />development, no greater than 200 per ASTM E84. <br />2) Burn extent for interior sheet, shall not exceed 1" per ASTM D635. <br />3) Protective Coating on Exterior Face Sheet: 1 mil thick DuPont Tedlar, factory <br />applied by licensed sheet manufacturer for architectural use. Coating shall be <br />fully field refinishable if damaged. <br />4) Weatherability of Exterior Face Sheet: Not more than 4.0 Delta E units of color <br />variation per ASTM D2244 after 5 years of outdoor weathering in South Florida at <br />45 degrees, facing South per ASTM D1435. Fabricate from colorfast resins. <br /> <br />C. Execution <br /> <br />1. Examination: Examine substrates and conditions, with installer present, for compliance with <br />requirements for installation tolerances and other conditions affecting performance. Proceed <br />with installation only after unsatisfactory conditions have been corrected. <br /> <br />2. Installation: <br /> <br />a. General: Comply with manufacturer’s written instructions for protecting, handling, and <br />installing skylight components. <br />1) Fit aluminum component joints to produce hairline joints free of burrs and <br />distortion. <br />2) Rigidly secure nonmovement joints. <br />3) Accommodate thermal and mechanical movements. <br /> <br />b. Erection Tolerances: Install assembly components true in plane, accurately aligned, and <br />without warp or rack. Adjust to comply with the following tolerances: <br />1) Variation From Plane: Limit variation from plane or location shown to 1/8" in 10' <br />over total length. <br />2) Alignment: Where surfaces abut in line and at corners and where surfaces are <br />separated by less than 3", limit offset from true alignment to 1/8". <br /> <br />c. Install sealants according to sealant manufacturer’s written instructions to provide <br />weatherproof joints. Install joint fillers behind sealant as recommended by sealant <br />manufacturer. <br /> <br />3. Cleaning: Clean assemblies inside and outside, immediately after installation, according to <br />manufacturer’s written recommendation. Remove temporary protective coverings and <br />strippable coatings from factory-finished metal surfaces and fiberglass sandwich panels. <br />Remove labels and markings from all components. <br /> <br /> <br /> <br />END OF SECTION 08952