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Section 02825 <br />AMERISTARO <br />02825/AEG <br />1555 N. Mingo Road <br />Tulsa, Oklahoma 74116 <br />Phone: (800) 321-8724 <br />Fax: (877) 926 -3747 <br />E -mail: arch @ameristarfence.com <br />Web site: http: / /www.ameristarfence.com <br />Material <br />A. Steel material for fence framework (i.e., tubular pickets, rails, and posts), when galvanized after <br />forming, shall conform to the requirements of ASTM A1011/1011M, with a minimum yield <br />strength of 50,000 psi (344 MPa). The exterior shall hot -dip galvanized with a 0.45 oz/ftz (138 <br />g /M2) minimum zinc weight. The interior surface shall be coated with a minimum 81 % nominal <br />zinc pigmented coating, 0.3 mils (0.0076mm) minimum thickness. <br />B. Steel material for fence framework (i.e., tubular pickets, rails, and posts), when galvanized prior <br />to forming, shall conform to the requirements of ASTM A924/924M, with a minimum yield <br />strength of 50,000 psi (344 MPa). The steel shall be hot -dip galvanized to meet the <br />requirements of ASTM A6531A653M with a minimum zinc coating weight of 0.90 oz /ft2 (276 <br />g/M ), Coating Designation G -90. <br />G. The manufactured galvanized framework shall be subjected to the PermaCoatO thermal <br />stratification coating process (high- temperature, in -line, multi- stage, multi - layer) including, as a <br />minimum, a six -stage pretreatment/wash (with zinc phosphate), an electrostatic spray <br />application of an epoxy base, and a separate electrostatic spray application of a polyester finish. <br />The base coat shall be a zinc -rich thermosetting epoxy powder coating (gray in color) with a <br />minimum thickness of 2 mils (0.0508mm). The topcoat shall be a "no -mar" TGIC polyester <br />powder coat finish with a minimum thickness of 2 mils (0.0508mm). The color shall be bronze. <br />The stratification - coated framework shall be capable of meeting the performance requirements <br />for each quality characteristic shown in Table 1. <br />D. Material for fence pickets shall be 1" square x 14ga. tubing. The cross - sectional shape of the <br />rails shall conform to the manufacturer's ForeRunnerT"' design with outside cross - section <br />City of Santa Ana RFP 13-064 <br />Page 20 <br />2511 -25 <br />Table 1 — Coating Performance Requirements <br />Quality <br />ASTM Test <br />i Performance Requirements <br />Characteristics <br />Adhesion <br />_Method <br />I D3359 — Method ',Adhesion (Retention of Coating) over 90% of test area (Tape <br />B <br />'and knife test). <br />Corrosion <br />B117 & D1654 <br />'Corrosion Resistance over 3,500 hours (Scribed per D1654; <br />Resistance <br />I. <br />failure mode is accumulation of 1/8" coating toss from scribe <br />for medium #8 blisters). <br />Impact <br />D2794 <br />;Impact Resistance over 60 inch lb. (Forward Impact using <br />Resistance <br />0.625" ball). <br />Weathering <br />D822, D2244, <br />;Weathering Resistance over 1,000 hours (Failure mode is <br />Resistance <br />D523 (60" <br />60% loss of gloss or color variance of more than 3 delta -E <br />D. Material for fence pickets shall be 1" square x 14ga. tubing. The cross - sectional shape of the <br />rails shall conform to the manufacturer's ForeRunnerT"' design with outside cross - section <br />City of Santa Ana RFP 13-064 <br />Page 20 <br />2511 -25 <br />