THREE-LAYERED DRAIN COMPOSED OF A CORRUGATED DOUBLE-STRUCTURED GEOFABRIC-COATED TUBE

摘要

Novelty: a three-layered drain tube composed of a corrugated double-structured geofabric-coated tube is disclosed buried into a trench for collecting and removing waters (drainage applications). Constitution: for avoiding the obstruction of the draining holes 4 of the drain tube by non-organic and organic admixtures, the drain tube is covered with adequate permeable synthetic filter 5 manually set during installation and presenting a string of technical and economy-related problems. Purpose: the aim of the invention is to produce a tube where the geofabric will be incorporated in a steady and suitable manner during the production phase by creating a three-layered tube able to efficiently facing the disadvantages presented during the manual covering of the corrugated drain tube with the synthetic geofabric.