There is a type of foundation that does not need a batch, pouring concrete and cement. This type of foundation consists of slabs and concrete blocks, which are laid directly on the ground around the perimeter of the building. This design only seems fragile. In fact, such a foundation is not subject to precipitation of rocks, for example, when thawing the soil.
During the calculation of the depth of the bookmark, it is necessary to take into account the type of soil and soil in order to mount this type of foundation correctly correctly. It is also important to take into account the factors of the depth of groundwater and the depth of freezing of the soil. For example, if in the winter period the level of groundwater does not rise higher than 2 meters to the level of freezing of the soil, the foundation can be laid to any depth of at least 0.5 meters for sandy soil and at least 0.7 for clay soils. The minimum width of the foundation base should be from 0.35 to 0.5 m.
This type of foundation is optimal, usually for small one -story buildings. He, moreover, is simply and quickly mounted (built). But he has a clear drawback-the high cost of building materials (blocks and plates), and the presence of lifting and vehicle equipment (autocrains, long-termers, etc. D.).