Company
Valplast AG is the licence holder for the
Valplast-Drainage-System. The basic
concept of this system is to place a layer of
gravel between the rock and the lining. This
gravel layer serves as a drainage bed to
lead the incidental water into the drainage
pipes situated at the base of the vault.
This new system of tunnel sealing can be
used by other companies, against payment
of a licence fee. In this case Valplast AG will
provide the necessary support during
planning and implementation.