Soils that are located in the construction area are given a lot of attention, at the design stage, as well as during construction work. Soils are classified according to a number of taxonomic categories, which are distinguished by certain signs. So all soils are divided into classes, types, types, groups and subgroups. The class definition takes place according to the nature of the structure, typical in composition, group in terms of strength and nature of ties, species in the name, and subgroup in terms of education and origin.