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DocuSign Envelope ID:AD41 E8C7-FC41-4249-A9C6-849589FOC156 <br /> SECTION 316613 — HELICAL PIERS <br /> PART 2 - PRODUCTS <br /> 2.1 HELICAL PIERS <br /> A. Pier Selection shall provide the performance specified. <br /> B. Helical lead sections and extensions shall be manufactured by A.B. Chance <br /> Company or approved equal. <br /> C. All units shall conform to the following: <br /> 1. Shaft Material: 2.875-inch O.D. steel pipe with minimum ultimate torque <br /> capacity of 5,500 ft-pounds and ultimate tensile strength of 49,500 <br /> pounds. <br /> 2. Helices: High strength low-alloy steel formed on matching metal dies to <br /> true helical shape. <br /> 3. Bolts: ASTM A320 Grade L-7 or approved equal. <br /> 4. Couplings: Formed as integral part of extension material. <br /> 5. Brackets and Steel Plates: ASTM A36 <br /> 6. Welding: All welds to be in accordance with latest edition of AWS D1.1. <br /> All welders shall be AWS certified. <br /> 7. Finish: All material shall be hot-dip galvanized in accordance with ASTM <br /> A 153. <br /> D. Installation equipment shall: <br /> 1. include a rotary torque motor with forward and reverse capabilities. Motor <br /> shall be either electrically or hydraulically powered. <br /> 2. be capable of developing the minimum torque required by the helical piers <br /> on the project. <br /> 3. be capable of positioning the helical pier at the proper installation angle. <br /> E. Installation Tooling (Adapters) shall <br /> 1. safely connect the installation equipment to the helical piers and exten- <br /> sions. <br /> 2. have a torque rating at least equal to the maximum torque rating of the <br /> helical piers specified. <br /> 3. Be securely connected to the helical pier during installation to prevent ac- <br /> cidental separation. <br /> F. Torque Monitoring Devices <br /> 1. Torque applied by installation equipment shall be monitored throughout <br /> the installation process. <br /> 2. Torque monitoring devices shall be either part of the installation equip- <br /> ment or an independent device in-line with the installing unit. Calibration <br /> data shall be available for review. <br /> Orange County Waste and Recycling For Proposal — Not for Construction <br /> Metal and White Goods Retaining Wall Repair 31 66 13 - 2 <br /> DAA PN R00592-204ST2 November 2020 <br />