Set up the stiffness matrix for the pile group shown in Figure S10.5and determine the force in each pile. The piles are end-bearing and may be considered pin-ended. The pile cap may be assumed to be rigid, and the soil under the cap carries no load. The value of AE / l is constant for all piles, and it may be assumed that sin α = 1.0 and cos α = 1/4, where α = angle of inclination of a pile.
