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The construction of a foundation on a slope places special demands on the calculation of slope stability. Huge volumes of concrete can cause soil layers to slide off the slope. As for the economic side of the issue, hilly terrain requires significantly higher costs for excavation and concrete work, including spare volumes of concrete to compensate for uneven terrain.
The use of Pillar geological screws for erecting a foundation on a slope allows for 2x or even 3x savings compared with a concrete foundation. And in some cases, it's possible to allow it to be built at such a construction site.
In the objects on the slopes, the second most important point, after geology, is the geodetic survey of heights under the spot of the building. Geodesy allows you to clearly calculate the landing of the head of the geo-screw according to the relief and take into account the additional length of the pile shaft to compensate for the height difference. For geoscrews towering more than 50-70 cm above the surface, we use diagonal ties.
These bonds work as stabilizers against twisting of piles not immersed in the ground when the full design load is applied. Under the full design load, it should be understood not only the mass of the structure, but also the snow mass on the roofs, as well as the operational loads from people, furniture and equipment on the floors.
Using a screw foundation on Pillar geological screws, you can build a building on a slope, while achieving significant savings in comparison with a concrete foundation.