It is known that the main foundation must be laid lower than the soil freezes. If this rule is not followed, then big troubles can happen later. Quite often this can be observed from cracks in the walls of buildings or uneven shrinkage of log structures. However, organizing a strip foundation for a low-rise building or a bath is quite costly. In this case, the foundation is being erected more powerful than necessary. In addition, to lay a tape-type foundation, you need to additionally level the site. Remove unnecessary buildings, level bumps or holes. This is a rather expensive process, which often requires the involvement of large-scale construction equipment. Now many have begun to carry out renovation of the premises, on their own it costs much cheaper.
For the least investment of money and time, you can use a foundation on screw piles. It is a steel pipe of various sizes with a pointed end to which a spiral blade is welded. Screw-type piles were developed in the last century and were widely used for the construction of bridge supports, power lines, as well as for weak and severely freezing soils. The screw pile is easily screwed into the ground below the depth of its freezing. Having reached the required level, the excess piles are cut at the level. A special support or head is welded onto the upper part. Bearing girders are subsequently mounted on it. Screw piles have a high load-bearing capacity and are suitable for almost any soil.