Specifications include, but are not limited to: 1. HELICAL PILES SHALL BE CHANCE SS150 (OR EQUIVALENT) THAT ARE HOT DIP GALVANIZED PER ASTM A153- (LATEST REVISION). 2. LEAD AND EXTENSION SECTION LENGTHS AND HELIX SPACINGS ARE NOMINAL. 3. NOMINAL SPACING BETWEEN HELIX PLATES SHALL BE AS SHOWN ON THE DETAILS HEREIN. 4. SHAFT MATERIAL SHALL BE HOT ROLLED ROUND-CORNERED-SQUARE (RCS) SOLID STEEL BARS PER ASTM A29; MINIMUM YIELD STRENGTH = 90 KSI. 5. HELIX MATERIAL SHALL BE HOT ROLLED LOW ALLOY STEEL SHEET, STRIP, OR PLATE PER ASTM A656, OR A1018 GRADE 80; MINIMUM YIELD STRENGTH = 80 KSI, 3/8" THICK (MIN). 6. COUPLING BOLTS: 3/4" DIAMETER x 3" LONG HEX HEAD PER ASTM A325 TYPE 1 AND NUT. 7. MANUFACTURER TO HAVE IN EFFECT INDUSTRY RECOGNIZED WRITTEN QUALITY CONTROL FOR ALL MATERIALS AND MANUFACTURING PROCESSES. 8. ALL WELDING TO BE DONE BY WELDERS CERTIFIED UNDER SECTION 5 OF AWS CODE D1.1.