Stress Coefficients According to GEDDES

by the Program Quick ELPLA

This book describes the essential equations used in Quick ELPLA to obtain stresses in soil due to applied load below the ground surface according to GEDDES with some verification examples. Besides, the book presents some pile foundation problems solved by hand calculation using GEDDE'S solution.

Stress in soil for applied load below the ground surface is obtained by Mindlin’s solution but not by Boussinesq's solution. Unfortunately, Mindlin’s solution is difficult to apply for hand calculation. In this case, it is convenient to use stress coefficients to determine the vertical stress. For practical application, the complex stress coefficients according to GEDDES may be obtained by the program Quick ELPLA. These coefficients can be tabulated for different loading geometries. The tabulated values are easy to use and enable a wide range of loading system to be analyzed. The GEDDE'S solution is useful to easily compute manually the elastic settlement or the consolidation settlement for pile foundation problems from stresses.