Such foundations for log cabins are used for their construction on the problem: wet, weak, or subsidence of clay soils. Design - the film weaves together a monolithic reinforced concrete slab around the perimeter of which is a strip foundation.
Work begins with the layout of the site and excavation unit, whose depth is chosen taking into account the fact that under the foundation slab will be at the same time the floor to the basement. After aligning the bottom of the pit (if any peat or waterlogged soils) holds the device substrate (sealing) the sand-gravel mixture (CBC), designed to hold the mixture and prevent leaching of fine gravel and sand high soil water. Substrate can be applied to geotextile. On top of the substrate over the entire area is filled sand and gravel.
After filling CBC excretion mortgages under water and sewer to the edge of the site to a depth inaccessible to freezing, you can install the external formwork for the slab and the tape. To prevent horizontal shifts (when exposed to high groundwater) slab for the foundation is strengthened by its installation of piles perimeter and in the locations of tapes for bearing walls. Under the concrete structure provides packing styrofoam. His use of the following purposes: insulation basement and additional amortization base waterproofing. Foam is placed on top reinforcement mesh, which prevents mechanical damage to the EPS coverage in the further work with the reinforcement cage.
When the device reinforcing cage plate piles, reaching the height of strip foundation, tied up with the first frame plate, and after filling with a skeleton band that will make foundation for log in a holistic, flexible and more durable. If necessary, fill concrete solution at low temperatures, we recommend the use of antifreeze, a plasticizer, which allows carrying out concrete work in such conditions. On we go to strip formwork assembly and its reinforcing cage. It is necessary to provide arrangement of vents. Poured concrete solution, after curing, the formwork is removed and sealed all the chips formed during its removal. In the tape (for durability), you can rub the aqueous solution of cement.
This type of foundation for log is an expensive and time consuming option. It is used if you can not do a device other grounds. Sometimes, to save for a small lightweight device houses allowed lattice panels, with similar technology. The difference lies in the presence of small cells, voids or gaps. On the other hand, in houses with more land bases. When you strip a greater height is obtained by ground floor, where you can arrange a garage, workshop or bath.