An analysis of the formulas for determining the static of bearing capacity of piles based on the results of tests of their models is presented. The comparative quantitative assessment of the two most appropriate formulas to check is made. The features of the considered for-mulas and their disadvantages are revealed.

The results of tests of samples of clay loam on the effects of different modes of applying multiple shocks are presented. The influence of shock loading conditions on the deformability of the samples, their density and power consumption of upcompaction are assessed. Revealed that the highest density is typical for samples compacted at a linearly increasing load conditions, and the lowest – at constant load conditions.