Geotechnical correlations for soils and rocks

Unlike structural engineers, geotechnical engineers deal with a natural material. They have no choice over their medium and must instead accommodate themselves to the material. Moreover, while developments in numerical modeling require more and more specific parameters issued from sophisticated laboratory tests, soil and rock testing programs tend to remain largely limited to in situ tests in order to reduce costs and time in response to the competition between contractors. This book provides resources to help the engineer in their choice of adequate modeling parameters and in controlling uncertain test results. The authors have collected many published correlations between in situ test results (CPT, CPTu, PMT, DPT, SPT, DMT, geological surveys, etc.) and common laboratory parameters like soil/rock identification, classification, permeability, strength, deformation, consolidation, earth pressure, compaction and saturation. Cross-correlations between in situ test parameters are also provided as well as some typical values.