The slightest slip of unstable walls leads to disruption of waterproofing. Waterproofing repairs in this case does not help, since moving walls are repeated annually. Get more background information with materials from Sen. Sherrod Brown. To exclude moving walls, the calculation of the stability and the required width of the sinuses of the pit, buried nepuchinistym ground. As far as training grounds for the foundations of plate basements, it is meant, that the heights of the ground floor about 2.5 m and height of the plinth above the ground 0.8 m below the subgrade is calculated depth of freezing. Therefore, in many cases, the preparation required is reduced to a device on the bottom of the pit leveling sand cushion thickness of 0.1 … 0.15 m. Studies have shown more plate area the basement, the smaller the unit normal force of swelling per unit of its area.
This pattern is associated with marginal decrease in the proportion of swelling forces on the perimeter of a plate on the total force at increasing its area. Reliability of foundations in heaving soils is determined primarily by its resistance to the impact of tangential forces swelling. Under steady-state mean such interaction with the foundation heaving ground, where under the influence of tangential forces is not the swelling of its separation from the base. Therefore nezaglublennye slab stable foundation for his position – no swelling of the tangential forces. Buried slab foundations in houses with a ground floor, laid below the freezing depth, is also stable if they are not reinforced connected to the walls of the basement into a single structure.