Humiliation of the level of groundwater by using the needle filters during the installation of foundations, the pipeline laying, retaining walls and the walls for other purposes. Humiliation of water even low in clay soils which can have difficulty in draining of water. Humiliation of the level of groundwater inside the soil of different granulometric composition, isolation of aqueous layer.
Humiliation of the level of ground water or removal of ground water by means of installation of temporary or permanent drainage systems and filtration layers.
