Design of Pile Cap Excel Sheet

It usually forms part of the foundation of a building, typically a multistory 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 œoor 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
•  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. 

SIGN PARAMETERS 

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