The clay loams of semi-solid consistency was tested under static loads. The test results have proved that high values of soil density can change operating conditions of artificial foundations significantly, i.e. a so-called plate effect can be observed. Due to high hardness values highly compacted soil beds allow distributing foundation loads on the considerable part of the area and reducing its value on the edge of the weak layer.
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Usmanov et al. (2014) studied this question.