What is the important disadvantage of a screw pile foundation?

Recently, in the construction market for the construction of country houses, outbuildings, bath complexes, screw piles are offered as the main foundation. Designs are offered in two types:

• Cast piles are a tip that is manufactured in an airless environment by precision casting;
• Welded structures have a pointed tip with blades welded into it. However, welded piles have the ability to deviate from the vertical during installation in the ground. Sometimes, due to excessive loads on the foundation, the blades actually made of metal pipes, the blades welded to the pile simply fall off. The load is transferred to neighboring piles, the foundation settles unevenly, which is fraught with collapse and complete destruction of the house.

The main disadvantages of a light pile foundation

Although the supporters of total savings in the construction of country houses have a lot of arguments that screw piles are more advantages than disadvantages, I still want to object to opponents, saying that such a foundation has minuses lots of.

• Among the most popular, one can single out the possibility of deformation of the strapping belt and the destruction of walls due to excessive load on screw structures. This defect occurs when the calculation of the load on the foundation is performed by amateurs, it is incorrectly calculated;
• Another drawback of such a foundation is the impossibility of laying it on rocky rocky soils. A metal pile simply cannot be screwed into the soil;
• The greater the load on the metal pile foundation, the shorter the life of the base;
• Such a foundation does not imply the arrangement of a full-fledged basement or basement;
• The construction of a pile-screw foundation must be constantly monitored. Unscrupulous builders may not fill the cavity of the pile with concrete to the top, as provided by construction technologies. Very often, workers ignore this stage, immediately after screwing in, welding the heads. It is unacceptable.

The main disadvantage

According to convincing statements by specialists, a pile-screw foundation made of coated metal galvanized or anti-corrosion paint, will serve the owners of houses, baths, utility blocks at least 20-25 years old. However, such foundations erected on marshy soils, on soils in elevated groundwater levels, according to observations, are destroyed in about an average of 7-10 years. Paint and galvanized layer do not protect products from corrosion, pipes rust, quickly collapse. In addition, if such a foundation is equipped near the electrified railways or cell towers, mines and quarries, where there is a mining of natural resources, the destruction is even faster, since the corrosion process is many times amplified.