A pile cap is a thick concrete mat that rests on concrete or timber piles that have been driven into soft or unstable ground to provide a suitable stable foundation. It usually forms part of the foundation of a building, typically a multi-story building, structure or support base for heavy equipment. The cast concrete pile cap distributes the load of the building into the piles. A similar structure to a pile cap is a “raft”, which is a concrete foundation ـoor resting directly onto soft soil which may be liable to subsidence.
DESIGN PROCEDURE
DETERMINE NUMBER OF PILE PILE
CAP ARRANGEME NT AND PLANE DIMENSION
PILE CAP PRELIMINAR Y DEPTH
CHECK FORCES IN PILES
CHECK FOR PUNCHING SHEAR
CHECK FOR SHEAR
DESIGN OF MOMENT
CHECK FOR BOND
DETAILS FOR REINFORCEMENT
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