Infrastructure,
Special Foundations
Zurich cross-city link, lots 3.1 / 3.2, underpinning of southern section and access shaft
to the section 2 lot limit (Löwenstrasse transit station). Starting from these tunnels, two diaphragm walls with a thickness of 80 cm and a depth of 20–23 m were built using the same modified cable excavators. In order to build what would later be the roof of the tunnel, 23 cross-passages were arranged[...]