First, find out the reason for which the structure occurs. There may be several reasons: under the building a different soil density around the perimeter of the entire foundation, constant laundering of the foundation bases, as well as the construction using several different types of foundation.
You can make the so -called soil sample in the summer. Take just a few samples from different points of the Earth at the base of the structure. Then compare the soil taken by humidity and composition. For example, the rapidly vested office buildings are checked more carefully for the different way, since their construction is carried out very intensively.
If the ground is slightly damp on the site and at the same time not loose, then this means that the foundation of the building is subject to groundwater. It also often occurs very often due to improper operation of water supply systems or breakdowns of the sewer system. In this case, you need to check the communications for any malfunctions. If they are identified, you need to immediately make a drainage of the foundation, well -mounted with strong concrete pouring, with the help of a special channel or pipes.