Design of Pile Cap Excel Sheet

It usually forms part of the foundation of a building, typically a multi-story building, structure or support base for heavy equipment. Design of Pile Cap Excel Sheet 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 floor resting directly onto soft soil which may be liable to subsidence.

• As per IS 2911 (Part I/ Sec 3) -2010, the pile cap may be designed by assuming
• that the load from column is dispersed at 45° from the top of the cap up to the mid
• depth of the pile cap from the base of the column or pedestal. The reaction from
• piles may also be taken to be distributed at 45° from the edge of the pile, up to the
• mid depth of the pile cap. On this basis the maximum bending moment and shear
• forces should be worked out at critical sections.

ASSUMPTIONS INVOLVED

• (i) Pile cap is perfectly rigid.
• (ii) Pile heads are hinged to the pile cap and hence no bending moment is
• transmitted to piles from pile caps.
• (iii) Since the piles are short and elastic columns, the deformations and stress distribution are planer.

DESIGN PARAMETERS

• (i) Shape of pile cap.
• (ii) Depth of pile cap.
• (iii) Amount of steel to be provided.
• (iv) Arrangement of reinforcement.

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DESIGN PROCEDURE

• DETERMINE NUMBER OF PILE
• PILE CAP ARRANGEMENT AND PLANE DIMENSION
• PILE CAP PRELIMINARY DEPTH
• CHECK FORCES IN PILES
• CHECK FOR PUNCHING SHEAR
• CHECK FOR SHEAR
• DESIGN OF MOMENT
• CHECK FOR BOND
• DETAILS FOR REINFORCEMENT

Design of Pile Cap Excel Sheet