Liebherr has said that installation of diaphragm walls on a construction site in Zurich, Switzerland demonstrates the precision its HS 8100 HD duty cycle crane can deliver.
Contractor Implenia used the machine to undertake the work on a new office development to enable excavation of prehistoric stilt dwellings on the site to be undertaken safely.
The site of the Zurich Insurance Group office is also surrounded by listed buildings, adding to the challenges on the site.
“It is a modern machine with high load-bearing capacity and performance and at the same time it has low fuel consumption and compact dimensions,” said Implenia head of deep foundation applications Daniel Bucher.
The duty cycle crawler crane is using a grab to construct the 600mm thick, 25m deep wall. At times during the installation work the grab is working only 200mm away from the facade of the listed buildings.