There is no practicable laboratory procedure for the determination of compressibility characteristics of cohesionless soils because of the difficulty of sampling of these soils. Therefore, settlement of cohesionless soils may be estimated by a semi-empirical method, based on the results of SCPT, DCPT, or PLT. 1. Schmertmann's Method for Settlement of Cohesionless Soils: Schmertmann (1970) presented a method to compute [...]
The settlement of foundations located in cohesive soils (clays) can be computed from the equation, which is – Sf = Si + Sc …(19.17) where Si is the immediate settlement and Sc is the consolidation settlement. The settlement analysis in cohesive soils is considered for the following cases: 1. Thin clay layer sandwiched between thick sand layers. 2. Clay layer [...]
Plate load test (PLT) is an in situ test to determine the bearing capacity and probable settlement of a foundation under any given loading. The test essentially consists of loading a rigid plate in increments at the foundation level and determining the settlements corresponding to each load increment. The settlement of foundation can be obtained from the load-settlement relationship obtained [...]