Piles are made — in the marked places, wells are broken down, which should have extensions (in the form of a bell). The depth of such a hole is 1.8 m, and the diameter is 0.3 m. Ruberoid glasses are inserted into them, which should have 0.1 m of a ledge above the ground. They are compacted with reinforcement (in four threads), which is bent below (this work is done using the hook), and goes beyond the piles above, which makes it possible to connect it with a grillage foundation in the future. Next, glasses are poured with concrete solution and tamped. After about 7 days, the heads of the piles are covered with bitumen (waterproofing).