Aker Wirth inclined TBM for Switzerland

30/07/2010

Aker Wirth inclined TBM for SwitzerlandThe Limmern access tunnel at Tierfehd in the Swiss canton of Glarus has a diameter of 8.03 m and will rise at a constant gradient of 24% from 800 m ASL to 1,700 m ASL. The job will be undertaken by a consortium of six contractors using a specially-designed Aker Wirth TBM that is the largest of its kind yet produced. Read the full press release. 30/10.

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