Which is the best reason for that the effects of pile installation cannot be calculated by the strict application of soil or rock mechanics theory A. The pile foundation is too deep; B. The pile foundation has skin friction resistance from the interface between soil and pile. C. The foundation soil is disturbed and impacted by pile construction operations. D. The pile bottom point bearing capacity is ignored.

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Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.