PPS guidance system for Limmern

15/10/2010

PPS guidance system for LimmernThe 8.03 m-diameter, 24% gradient Limmern access tunnel at Tierfehd in the Swiss canton of Glarus poses a challenge for both the Aker Wirth TBM and its PPS guidance system. It is the largest inclined TBM tunnel ever undertaken. Read the PPS press release, and click here for previous items about the TBM. 41/10.

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