3371.1SCOPE
Provide steel shells for cast-in-place concrete piling.
3371.2REQUIREMENTS
Provide cylindrical steel shells for cast-in-place concrete piles meeting the physical strength and chemical requirements of ASTM A252, Standard Specification for Welded and Seamless Steel Pipe Piles , Grade 3. If specified in the Plans as an alternative, the Contractor may provide cold-rolled fluted steel shells meeting the requirements of SAE 1010 or SAE 1015 with tensile yield strength of at least 50,000 psi in accordance with ASTM A370, Standard Test Methods and Definitions for Mechanical Testing of Steel Products . Provide tapered piles with a tip diameter of at least 8 inches and a butt diameter of at least the Nominal diameter required by the Contract.
Provide steel shells with a thickness and strength capable of withstanding the driving forces to substantial refusal in accordance with 2452.3E, “Penetration and Bearing,” and with a Nominal wall thickness as specified in Table 3371.2-1. For piling with a painted finish in accordance with 2452.3H.1, “Painted Piles,” or with a galvanized finish in accordance with 2452.3H.2, “Galvanized Piles,” provide piling free of irregularities or deleterious matter adversely affecting the finished coating. See 2452.3A, “Delivery and Inspection of Piling” for requirements to use surplus piling. Table 3371.2-1 Steel Shell Requirements Steel Shell Options Nominal Pile Size, inches Nominal Outside Diameter, inches Minimum Wall Thickness, inches* 10 10 0.219 10 3/4 0.219 12 0.250 12 3/4 0.250 12, fluted ǁ 0.179 16 16 0.312 16, fluted ǁ 0.203 18 18 0.375 18, fluted ǁ 0.250 20 20 0.375 24 24 0.500 30 30 0.500 * Unless otherwise shown on the Plans or Special Provisions. ǁ Do not use fluted or tapered shells for exposed pile bent piles unless otherwise shown on the Plans or Special Provisions for a particular Structure.
3371.3SAMPLING AND TESTING
Provide one certified copy of mill test reports with heat numbers identified, including physical test reports and chemical analyses, and mill shipping papers to the Engineer before delivering the Material to the Project. Include the actual carbon, manganese, and phosphorus contents in the chemical analysis report.
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