After some time any base begins to sink. Both changes of situation or condition of soil, and building of new objects near the site, and malfunctions at direct construction can be the reasons. Also the base collapses in connection with decay, because of weather anomalies, for example strong precipitation or temperature drops.
Instruction
1. There is number of the actions allowing to strengthen the base. Where there was draft it is necessary to dig hole with inclination in 35-400 to bottom edge of the basis, then under the base liquid concrete is filled in. It is necessary to fill in while concrete continues to decrease. In couple of days to repeat downloading. If drawdowns on all area, then it is necessary to dig out trench up to 30 cm in depth near the base and to make wood form. By means of the perforator in walls of the old basis to place metal pins and to connect them to the armature intended for new belt. armopoyas to fill in this with concrete with filler from fine gravel or crushed stone.
2. At total or partial destruction of the base the house begins to heel. In this case it is necessary to construct the new base. At the beginning the building needs to be unloaded. Furniture is taken out, floors and doors are removed. Then openings break through each 2 m and through them I-beams or channels are passed. Under beams it is necessary to establish hydraulic jacks to lift the building on support. If necessary also change the lower wreaths. Between wreaths and concrete waterproofing material (roofing material) surely keeps within.
3. Instead of the monolithic base it is possible to establish screw piles, they are cheaper than monolith and serve much longer. The mass of the building, depth of freezing of the soil and also its type help to define quantity and type of piles. Technology: the house rises and the old base is dismantled, then are screwed in by the special lever on depth lower than the level of freezing of soil of pile. Water level helps to control height of piles. After alignment, piles connect metal channel (thickness depends on expected loading). Final the stage consists in installation of the building on support.
4. Good way to make the base more resistant and to increase time of its operation is the waterproofing. For this purpose it is necessary to issue small ditch outside on building perimeter, to remove soil from walls and to cover with hot bitumen. To bitumen sheets of expanded polystyrene are pasted. This procedure provides to the base frost resistance and further will protect it from moisture.