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In civil engineering, approaches to underpasses, aqueducts, and sunken roadways often incorporate geomembrane constructions as groundwater barriers. The waterproof membrane must be installed at such a level that vertical equilibrium is maintained to prevent the construction from floating.
The installation of the geomembrane at depth can be done in two ways: through the sinking of geomembrane constructions, and the application of geomembranes in dry conditions. In both methods, Genap has years of experience and has completed a significant number of impressive projects.

By applying a synthetic layer, a waterproof barrier is created, allowing the infrastructure to be constructed in dry conditions.

In dry installation, a synthetic construction is applied for, among others, access ramps, underpasses of tunnels, aqueducts, and sunken roadways.

To enhance traffic safety, Genap has created construction pits for new underpasses along the N348 between Raalte and Ommen. This intervention eliminates hazardous intersections at the Oude Twentseweg and Dalmsholterdijk, signifying a significant improvement in traffic flow.

A PVC membrane construction was provided by Genap at the Houkesloot Aqueduct in Sneek. Genap recommended the use of 1 mm thick PVC membrane and reinforced strips of Genatex® reinforced PVC membrane for this specific project. A total of 8,500 square meters of membrane and geotextile were installed over two days.
