Geosynthetics with protection tasks keep sensitive components (e.g. sealing membranes) against mechanical damage. This particularly applies to shear and pressure stress caused by the bordering soil. Geosynthetics with a protective function must have sufficient thickness and a high resistance to perforation.In addition to the traditional use of geosynthetics in the direct area of the track, these are also used in conventional earth and support structures as well as side path constructions