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Validation of Soil Type Interpretation and Determination from CPT and DMT Tests

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This paper consists of three parts. The first part presents the methodology of in situ tests using a CPT probe and methods of soil type determination that are based on them. The second part lays out the methodology of field tests with Marchetti’s dilatometer (DMT) and methods of soil type determination on their basis. In the third part, the process of validation of CPT and DMT tests with borehole test methods is carried out based on the analysis of in situ investigations in the Warsaw University of Life Sciences (SGGW) Campus sites compared to the results obtained from laboratory tests. Validation of the CPT method using Marr’s nomogram was successful. The DMT method using Marchetti’s nomogram chart should be also considered as satisfactory.