The specifics of industrial enterprises’ functioning in the construction sector of the Russian economy are of particular interest and have been a subject of active discussion over the past years. This article analyzes functioning of the construction complex companies in the context of new global challenges associated with the crisis phenomena in 2020 – the fall in oil prices and the coronavirus infection, as well as the transition to remote operation during the pandemic of basic economic branches. Nowadays, it is especially important to assess reserves for sustainable innovative development of industrial enterprises and predict consequences of the crisis phenomena. The authors investigate some organization forms for the innovative process, determine key efficiency factors of enterprises’ innovative activity and propose ways for its improvement.

This article discusses the method of strengthening the slab foundation, carried out by summing up the soil-cement piles. Piles should be located under the loaded structures of the capital construction object – walls and pillars. Based on the results obtained in the study, it was found that with a reduction in the effective loads of up to 46 % in the soil-cement piles, the stiffness of these piles increases by 10–12 %, and the bending moments in the base plate decrease by 0.5–3 %. The load on the pile gain becomes uniform with a uniform structure of the building in the plan. The difference between the limit and average values reaches 14 %. Based on the obtained numerical data, the authors produced a method for calculating the load on the soil-cement piles while strengthening the slab foundation, including the loads transferred to the base of the slab prior to the reinforcement process. A technique for designing the foundation pile foundation was also developed. This technology allows to reduce the load on the piles by more than 2 times according to the obtained calculations, also reduce the cost of work to strengthen the slab foundation and material consumption by up to 30 %. The authors on the basis of the study made the following conclusions: knowledge of the origin of soils, the conditions of their creation and changes in the course of the subsequent existence of their composition and structure allows us to influence their physico-mechanical properties. This will make it possible to correctly assess the reliability and their deformability throughout the entire construction of facilities and at the stage of their operation, therefore, will allow to reduce operating costs.