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<br />. <br /> <br />7. <br /> <br />.S. <br /> <br />. <br /> <br />The color coating for the panel shall be silicone polyester, which is a blend of premium polyester <br />resins and silicone. 'SP' provides a high resistance to ultra-violet rays as a durable coating over G- <br />90 (1.25 oz [275 glm']) galvanized steel. 'SP' shall meet the requirements of a long-term exterior <br />finish with excellent weather-ability. 'SP' finish shall provide an optimum use of silicone together <br />with a premium quality polyester resin for long life. Alternately, the panel shall be color coated in <br />fluorofinish which is a premium fluorocarbon called polyvinyledine fluoride, (KYNAR 500 70%). <br />It is applied to G-90 (1.25 oz [275 glm2]) galvanized steel. Exterior performance characteristics <br />should include color integrity, film flexibility and resistance to chalking. Other important properties <br />of finish shall be high resistance to ultra-violet radiation, and rèsistance to weathering. <br /> <br />The panel profile that is encouraged to be used is deep profile rib IS-gauge minimum run <br />horizontally. Maximum permissible deflection is to be 1/120. Hat shaped and "Z"-shaped subgirts <br />should be placed at every structural support and not more than 4'-0" (1.22 mm) on center between <br />supports. Trueness of material and quality of workmanship. with proper detailing of material <br />termination, shall be of the utmost importance. <br /> <br />Plaster: <br /> <br />Smooth plaster (stucco) may be used but is not highly recommended because of uncertainty in <br />surface quality control. If plaster is used, the highest degree of detailing, materials and <br />workmanship will have to be observed. Here again, metal horizontal banding must be incorporated. <br /> <br />Concrete Panels: <br /> <br />Tilt-up/pre-formed concrete panels may be used in perimeter wall and building wall applications. <br /> <br />The form liner profile specifications and configuration that may be used must be equal to those <br />produced by Symons Corporation's Architectural Form Liners. The five options are to be equal to: <br /> <br />a. 3/16" deep, short ripple rib 4' -10" (no reveal) <br /> <br />b. 1/4' deep rib, 4' x 10' (reveal) <br /> <br />c. Extruded I Yz" rib, 2" O.C., l' x up-to-30' (no reveal), run horizontally <br /> <br />d. Sandblast #2 medium, 4' x 10' <br /> <br />e. Sandblast #3 coarse, 4' x 10' <br /> <br />Continuous and horizontal metal reveals must be incorporated. to tie complex together and to be used <br />a construction joints. <br /> <br />Page 3 014 <br />758-53 <br />