This foundation type uses both sidewall shear support and end-bearing. Straight Shaft With Sidewall & End Bearing Pile Hence, the sidewall is used to provide shear support to the pile base. The base of the pile still needs a rock or good-bearing soil, but a hard and reliable bottom may not be desirably accessible. Straight Shaft With Sidewall Shear PileĪ drilled pile needs sidewall shear support when a bottom or end support is unavailable or unreliable. It is the simplest form of drilled pile foundation deemed stable and safe, and the construction cost is relatively less. The end bearing pile is firmly installed into the hard rock or soil. The straight shaft end-bearing pile foundation is suitable for rock, hardpan, and good bearing or firm soil.
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