Laserfiche WebLink
d, The anchorage system shall be designed so that the panels are secure, yet <br />"free floating ", to accommodate expansion and contraction; and so that <br />Individual panels may be installed or removed without disturbing adjacent <br />panels. Panel specifications are to be equivalent to 'Techwall' by Conspec <br />Systems. <br />B. Wall Cladding— Horizontal - Shaped Profile Me I Panels: <br />Horizontal deep rib metal siding decking may be used for the major service <br />buildings exterior and may be used for public oriented building exterior cladding. <br />The siding must be of the highest quality, and seamless (no apparent <br />intermediate joints). If such siding is used for the service building, other building <br />materials must be incorporated into the design of the structure in accordance <br />with Section B.1 of these Standards. <br />The specifications for'Steelite High Rib Panels' were used as a basis for the <br />following guidelines. The primary metals shall be galvanized steel which is a <br />quality, grade 'A' steel which meets the ASTM A446 specifications. A corrosion <br />resistant finish is achieved by a continuous hot -dip commercial galvanizing <br />process in accordance with ASTM A526 090 (1.25 oz [275 g /mg). This material <br />shall be the substrate for all panels. An alternative metal is galvalume which is <br />a steel sheet coated with all aluminum -zinc alloy applied by the continuous hot - <br />dip method.: Galvalume provides good resistance to heat and corrosion. <br />The color coating for the panel shall be silicone polyester, which is a blend of <br />premium polyester resins and silicone. 'SP' provides a high resistance to ultra- <br />violet rays as a durable coating over G -90 (1.25 oz [275 g /ml) galvanized steel. <br />'SP' shall meet the requirements of a long -term exterior finish with excellent <br />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 <br />be color coated In fluorofinish which is a premium fluorocarbon called <br />polyvinyledine fluoride, (KYNAR 500 70 %). It is applied to G -90 (1.25 oz 1275 <br />g /mg) galvanized steel. Exterior performance characteristics should include <br />color integrity, film flexibility and resistance to chalking, Other important <br />properties of finish shall be high resistance to ultra - violet radiation, and <br />resistance to weathering. <br />The panel profile that is encouraged to be used Is deep profile rib 18 -gauge <br />minimum run horizontally. Maximum permissible deflection is 10 be 1/120. Hat <br />shaped and "Z "- shaped subgirts should be placed at every structural support <br />and not more than 4'-0" (1.22 mm) on center between supports. Trueness of <br />material and quality of workmanship, with proper detailing of material <br />termination, shall be of the utmost importance. <br />Ordinance No. NS -2650, <br />Page 22 of 24 <br />Exhibit "B" <br />Page 17 of 19 <br />8 -164 <br />