Drain system for buildings basement against subsurface water

摘要

The present invention relates to a system for the efficient collection and drainage of groundwater, which makes it possible to continuously collect groundwater more efficiently by means of drainage units simply or even retrofitted to the foundations of buildings and thus to protect the building from groundwater. The system according to the invention consists of a drainage unit, a corner unit and an extension unit which can be connected to the corner unit. It is characterized in that the longitudinal lower drainage element (9) of the drainage unit (1) is preferably semicircular in cross section with a given radius (R) and an arcuate surface (61), and one upper edge of the drainage element (9) has a given length (H). ) has a straight connecting part (62), the other edge of the collecting element (9) is provided with a pop-in flange (60) with water inlets (67), and upwards on this pop-up flange (60) with another straight top connecting part (H) of a given length (72) and the width (2R) of the inner part of the curved catchment element (9) is greater than the outer width (S) of the lower connection part (13) of the drainage unit (1) and, if appropriate, the width of the inlet flange (60). the openings (67) are circular or square in shape and are preferably formed by a curved edge (15) and an inner curved edge (16) at one end of the catchment element (9).