Lecture 25 :
Pile Groups [ Section 25.3 :
Design value of ultimate load ; Settlement of a pile ]
---------(48)
---------(49)
=ultimate at base
---------(50)
d is the diameter of the pile and is the influence factor for tip of the pile, p is the perimeter
Generally =0.5 and it is a function of skin friction ( )
=ultimate at base
is the influence factor for tip of the pile, p is the perimeter 
=0.5 and it is a function of skin friction ( 
) 
