Reconstruction of the foundation with screw piles: features and advantages of the technology

When the strength of the foundation decreases, this necessarily adversely affects the entire structure. Destructive processes occur throughout the construction of the building and, progressing, eventually can lead to its complete destruction. Reconstruction of the foundation with screw piles is one of the most effective methods of restoring the integrity of low-rise buildings. The use of this technology allows you to quickly and efficiently restore any type of foundation foundation.

The reasons for the destruction of the foundation

The main factors causing the subsidence of the foundation are various changes in the lower layers of the soil. These processes are physicomechanical and hydrological. The land, for example, can sink due to the impact of groundwater, construction works nearby with the use of heavy machinery, etc. Moreover, not only the old but also the new foundation can suffer.

The sifted soil "pulls" behind itself the foundation, as a result of which deformation processes are triggered. The first sign of its subsidence is the crevices in the blind area. Destructive processes begin at the bottom of the bedding foundation. If there is no immediate reconstruction of the foundation with screw piles, the bearing characteristics and stability of the building will decrease, which, in the end, will lead to its partial or complete collapse.

Selection of screw piles

A screw pile is a welded single-seam steel pipe with a sharp, wound endpiece. A special blade is welded to the lower part of the tube in the form of a thread, the size of which exceeds the trunk diameter by 1.25 times. Thus, a design resembling a self-tap is obtained.

When the foundation is reconstructed with screw piles, the drawbacks, unfortunately, can also occur. The main problem, because of which the durability of the structure is reduced, is the susceptibility of the metal to corrosion. In connection with this issue, the choice of material should be given special attention.

Quality steel piles, manufactured in strict accordance with technological requirements, necessarily have an anti-corrosion coating, which includes epoxy resin and enamel. And the optimal material for the production of piles is galvanized iron. Reconstruction of the foundation with high-quality screw piles can prolong the "life" of a house for 100 years!

Screw piles differ in diameter, which makes them a universal building material that allows you to quickly and effectively solve various tasks.
The number and size of piles are selected taking into account the type of soil, the depth of freezing and the estimated mass load.

Technology of foundation repair

The reconstruction of the foundation with screw piles (the process photo is shown below) is performed according to the following scheme:

• Investigation of soil features.
• Trial screwing of one pile into the ground.
• Screwing piles around the perimeter of the structure (distance from the walls is 20-25 cm).
• Filling the pile cavity with a cement-sand mixture.
• Welding of the heads, installation of the structure from the channels and I-profiles by welding.
• Raising the house with the help of special powerful jacks.
• Installation of a new foundation.
• Lowering the house to a ready foundation.

The most rapid and simple reconstruction of the foundation with screw piles in buildings up to 6x6 meters. It takes only 2-3 days to carry out a full range of works.

Repair of foundations of large brick or wooden buildings is more complicated, since it requires the installation of auxiliary piles under the center of the building. This operation requires a partial disassembly of the floor. However, regardless of the complexity of the task, the most effective and inexpensive method is still considered the reconstruction of the foundation with screw piles. The responses of a huge number of customers who decided to "reanimate" their real estate with the help of this technology are a confirmation.

Technology advantages

To the indisputable merits of the method of restoring the foundation with screw piles, according to users, you can safely attribute:

• No need for large-scale earthworks.
• Ease and speed of installation.
• The ability to provide the necessary strength and load-bearing capacity of any type of foundation.
• Durability of the construction (provided that quality screw piles are used).
• The possibility of repairing the foundation on different types of soils and in any period of the year.
• Acceptable cost of works and materials.