The excavation pit is 170 m long and will be about 24 m deep. Currently, the second of a total of three stiffener layers is being built. In the next step, the construction of the third strip layer, the already constructed tunnel tubes will become visible. The excavation work must be planned and carried out with precision. Close cooperation between the civil engineering and foundation engineering departments is crucial for success. An extensive monitoring system has been set up to assist the team with supervision.
The video shows the exciting progress.