The main indicator of the soil is the ability to pass water. If the soil does not pass water well, then when it freezes, the soil swells – destroys and pushes out the foundation of the house. When thawing, such soil, on the contrary, sucks the foundation. And as a result, after a couple of years of operation from interseasonal deformations, the foundation loses its strength and collapses. Often, cracks in the walls and other load-bearing structures of a building occur precisely from a mismatch between the foundation structure and the type of soil. Basically, summer residents are saved by the small size of the house.
Continent soils – formed from the destruction of rocks. They can be rocky, coarse-grained, sand-gravel and coarse-grained. They are the most reliable and convenient for building a foundation at home. On rocky ground, you can directly support the foundation without deepening. If it is gravel and sand, then the foundation deepens to 0.7 m. These soils pass groundwater well, water does not stagnate. Therefore, these soils practically do not freeze through and do not allow swelling of the soil. They are called non-porous.
On such soils, shallow foundations are usually arranged for which foundation preparation is not required.
