Polishchuk [1,2] has developed a practical method of determining the increased computed resistance of beds composed of silty-clayey soils with allowance for hardening under long-term service-induced loads. Determination of the angle of internal frictionϕ II con and specific cohesion c II con of the consolidated zone of the bed in contrast to other analogous computational procedures in which (using additional terms, or increasing coefficients) values of the design resistance R con of the consolidated bed are increased.The proposed method applies experimentally substantiated increasing coefficients K ϕ to the in-situ angle of internal friction ϕ II , and K c to the in-situ specific cohesion c II . Values of the strength characteristics with allowance for consolidation of the soils after a service period of more than 15 years are determined from the formulas: