In the last period of progress in geotechnical engineering in Poland, some existing standards concerning evaluation of soil parameters as well as interpretation of laboratory tests results can be observed. A concise characteristic of these standards including rational of their existence is presented in the paper. Next, attention was drawn to the most important aspects of laboratory tests determining the test results. The most popular method for evaluation of sample quality was shown with use of deep subsoil example. The most important factors affecting test quality were also presented. Reference was made to interpretation of shear strength results as well as to evaluation of stiffness accounting for strain range and stress level.

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