ABSTRACT
A stress condition in the foundation soil is generated by a load exerted on footing. In many instances the settlement of footings can be calculated by the simple method of equivalent layer put forth by Tsytovich. Numerous tests have shown that the settlement of punches and footings develops mostly as a result of the deformation of soil layers at small depths under foot. The modulus of deformability depends however quite considerably on the stress condition of soil. Determination of the footing settlement with inclusion of the variation of the deformation modulus over depth, and the dependence of the thickness of compressible stratum on stress condition, should be widely applied in engineering design of foundations. Hence the role of the structural strength of soil must be taken into account in foundation settlement computations, together with the variation of the modulus of deformation over depth, as a function of the ratio of the compression and elastic moduli of deformation.
