Design Requirements. Adequate plant inspection reports should accompany each pile shipment, identifying the piles and certifying that they meet the design specifications including such things as the amount of reinforcing steel, 28-day concrete strength, and effective pre-stress. Piles should be marked or stamped with the date of manufacture. Inspection reports should come from an independent testing agency and not from the manufacturer.
Lengths. Precast piles will be shipped to the jobsite according to specified or approved ordered lengths. Each pile should be of the full ordered length except when sectional-type piles are permitted. Sometimes piles are ordered with sufficient extra length to permit stripping back the concrete and exposing the reinforcing steel for the pile-to-cap connection (see under Pile Installation).
Ordered lengths may be somewhat larger than anticipated driven lengths to allow for variations insubsoil conditions.
Dimensions. Piles should be of the shape and size specified. Tolerances. Piles should be straight within specified tolerances. Butt ends should be square to the longitudinal axis and free of any major surface irregularities.
Chamfers. All corners or edges of square piles should be chamfered. The width of the chamfer should be limited to about 1.5 in (38.1 mm) so that the reduction in any side dimension due to chamfer is not more than about 2 in (50.8 mm).
Damage. Check piles for detrimental cracks, spalling, slabbing, or other damage. Hairline cracksare normal but should not be too numerous.
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