Drains chimney and of foot for earth dam.

In the construction of dams earth.

• Associated with natural or artificial ripraps, it is used as filter anti-erosion of the face upstream. It wraps the drain of foot made up of drainage trenches.
• It protects the granular blanket drainage, which collects the leak-flow. Connected directly to the collector, it acts as drain - chimney.

In the realization of irrigation canals:

• The geotextile one ensures the protection of the drainage course, which is used as foundation with the hydraulic or bituminous concrete facings.