The diploma thesis deals with rapid methods for determining the mechanical properties of soil. The central method is the mud clay method, which was performed for four different forest stands and soil types in Kočevska. In the study, measurements were made of the dimensions of the lumps at different water contents, basic soil analyzes, and the field capacity and plasticity limits were determined for each soil type. The results show that the dimensions of mud clumps with soil water content change, generally increasing the surface of the clumps and reducing their thickness. The highest field soil capacity was obtained in soil samples with high clay and organic matter contents. The lower and upper soil plasticity limit and the field capacity of the soil, in combination with the appearance of the lump and the assessment of its humidity, can serve as an assessment of the suitability of forest operation in terms of soil damage. The mud method and the two methods implemented (dirt, handprint) have proven to be appropriate and practical for the rapid estimation of soil carrying capacity in different soil types as well as different soil water contents and will be of great help to workers in making decisions.
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