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pretreatment/wash (with zinc phosphate), an electrostatic spray application of an epoxy base, and a separate electrostatic spray application of a polyester finish. The base coat shall be a zinc -rich thermosetting epoxy powder coating (gray in color) with a minimum thickness of 2 mils (0.0508mm). The topcoat shall be a "no -mar" TGIC polyester powder coat finish with a minimum thickness of 2 mils (0.0508mm). The color shall be (black). The stratification- coated framework shall be capable of meeting the performance requirements for each quality characteristic shown in Table 1. Table 1 — Coating Performance Requirements Quality ASTM Test Performance Characteristics Method Requirements Adhesion D3359 — Method B Adhesion (Retention of Coating) over 90% of test area (Tape and knife test). Corrosion B117 & D1654 Corrosion Resistance over Resistance 3,500 hours (Scribed per D1654; failure mode is accumulation of 1/8" coating loss from scribe or medium #8 blisters). Impact Resistance D2794 Impact Resistance over 60 inch lb. (Forward impact using 0.625" ball). Weathering D822, D2244, Weathering Resistance over Resistance D523 (60° 1,000 hours (Failure Method) mode is 60% loss of gloss or color variance of more than 3 delta -E color units). D. Material for fence pickets shall be 3/4" square x 16ga. tubing. The cross - sectional shape of the rails shall conform to the manufacturer's ForeRunnerTM design with outside cross - section dimensions of 1.50" square and a minimum thickness of 14ga. Picket holes in the ForeRunnerTM rail shall be spaced 4.70" o.c. Picket retaining rods shall be 0.125" diameter galvanized steel. Posts shall be a minimum of 2 -1/2" square x 12ga. High quality PVC grommets shall be supplied to seal all picket -to -rail intersections. ' 2.03 FABRICATION ' A. Pickets, rails, and posts shall be precut to specified lengths. ForeRunnerTM rails shall be pre - punched to accept pickets. B. Grommets shall be inserted into the pre - punched holes in the rails and pickets shall be inserted through the grommets so that pre - drilled picket holes align with the internal upper raceway of the ' ForeRunnerTM rails. (Note: This can best be accomplished by using an alignment template.) Retaining rods shall be inserted into each ForeRunnerTM rail so that they pass through the predrilled holes in each picket, thus completing the panel assembly. ' C. Completed panels shall be capable of supporting a 400 lb. load (applied at midspan) without permanent deformation. Panels without rings shall be biasable to a 25% change in grade; panels with rings shall be biasable to a 12.5% change in grade. ' D. Gates shall be fabricated using Aegis P1usTMpanel material and gate ends having the same outside cross - section dimensions as the ForeRunnefrma rail. All rail and upright intersections shall be joined by 1 12/04 02444 -3 03 -4138