During the construction of high-rise buildings, which transfer heavy loads onto foundations, bedrock,
which is covered by one or several layers of rock-free soils are frequently encountered in the bed. If the
loads transmitted from a building are significant, allowable settlements are small, and the bearing capacity
of the rock-free soils is low, and their excavation is uneconomical, foundations formed from cast-in-place
piles are, as a rule, installed.