Two—bladed screw piles are one of the most stable and technologically advanced options for a pile-screw foundation, which is actively used in private and industrial construction. Their key feature is the presence of two blades located at different levels of the barrel, which directly affects the bearing capacity and stability of the structure.
In conditions of difficult, deep or weak soils, standard solutions often cannot cope with the loads. This is where two-bladed screw piles perform at their best, providing reliable support without the need for large-scale excavation.
Let's look in detail at how two-bladed piles differ from classical ones, what advantages they have and in what cases their use is really justified.
What are two-bladed screw piles and how do they work?
Structurally, a two-bladed screw pile from zavodso.ru It is a metal tube with a sharp tip and two blades placed at different heights. This solution allows you to distribute the load not at one point, but in two layers of soil at once.
When screwed in, the pile passes through the upper, often unstable soil layers and is fixed at two levels at once. This increases the resistance to pulling out, reduces the risk of subsidence and makes the foundation more resistant to seasonal soil movements.
In fact, the two—bladed pile works as an anchor: one blade stabilizes the structure in the upper layer, the second in the denser and more load-bearing one. This principle is especially effective when building on sites with relief differences or heterogeneous geology.
Advantages of two-bladed screw piles
The main advantage of two—bladed screw piles is the increased bearing capacity compared to single-bladed counterparts. Due to their double fixation in the ground, they better accept both vertical and horizontal loads.
Another important advantage is stability on weak and deep soils. Peat, clay, loam, and moisture-saturated soils do not become a problem, since the load is distributed more evenly and the risk of deformation is minimized.
It is also worth noting the versatility. Two-bladed piles are suitable for year-round installation, do not require massive site preparation and can significantly reduce construction time without loss of reliability.
Where two-bladed screw piles are used
Two-bladed screw piles are most often used in the construction of foundations for private houses, frame and modular buildings. They are well suited for facilities where accuracy, installation speed, and predictable load-bearing capacity are important.
In commercial and industrial
