Revisions log for Answer #1167

The figure shows not a pile foundation, but a pile foundation with a camouflaged extension. The depth is not enough, because the regulatory depth of seasonal freezing in the middle belt varies from 1.2 to 1.8 m, and the calculation also depends on the soil. If the soil is even moderately friable, the piles will pull out. Before you design, let alone build, you need to conduct engineering and geological surveys, even if minimal. For a house to suffice two wells on 2-3 m, it is quite possible to do, even with a garden drill. You should at least have an idea of the types of soil (clay, loam, sandy loam, sand, peat), particle size distribution (for sand) and consistency (for clay soils). If at least 1.5 m of sand (of any coarseness), loam or clay of tight consistency (hard and semi-hard is even better) it will be enough to slightly deepen the foundation blocks (about 30 cm). For clay soils you will need a sand cushion, possibly tamping crushed stone into the holes. Before laying the pillow be sure to lay a geotextile with a conclusion to the surface. The number of blocks and the depth of embedding is quite realistic to achieve an even support for the cabin. Enough 8 supports. In the same way put a hut friend on highly permafrost loams, the fifth year stands perfectly straight.