BY
-PASS FORMWORK

Intended for the construction of the secondary lining of crosspassage tunnels between two main lines.
The machine can be designed with transformable in order to be reused in different geometries within the same project.
The formwork is calculated to work with concrete hydrostatic pressures.
It can be associated with collar shutters for the connections construction and transported by the bogie machine between the various crosspassage tunnels.