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d. The anchorage system shall be designed so that the panels are <br />secure, yet "free floating," to accommodate expansion and contrac- <br />tion; and so that individual panels may be installed or removed <br />without disturbing adjacent panels. <br />Panel specifications are to be equivalent to 'Techwall' by Conspec Systems. <br />6. Wall Cladding - Horizontal - Shaped Profile Metal Panels: <br />Horizontal deep rib metal siding decking may be used for the major <br />service buildings exterior and may be used for public oriented building <br />exterior cladding. The siding must be of the highest quality, and seam- <br />less (no apparent intermediate joints). If such siding is used for the <br />service building, other building materials must be incorporated into the <br />design of the structure in accordance with Section 8.1 of these Standards. <br />The specifications for 'Steelite High Rib Panels' were used as a basis <br />for the following guidelines. The primary metals shall be galvanized <br />steel which is a quality, grade 'A' steel which meets the ASTM A446 <br />specifications. A corrosion resistant finish is achieved by a continu- <br />ous hot -dip commercial galvanizing process in accordance with ASTM A526 <br />G90 (1.25 oz [275 g /m2]). This material shall be the substrate for all <br />panels. An alternative metal is galvalume which is a steel sheet <br />coated with all aluminum -zinc alloy applied by the continuous hot -dip <br />method. Galvalume provides good resistance to heat and corrosion. <br />The color coating for the panel shall be silicone polyester which is a <br />- 6 - <br />8 -217 <br />