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November 17, 2011

Lasers lock University Link TBMs on target

  • The guidance system used by Sound Transit is expected to save hundreds of thousands of dollars on tunnel boring costs while keeping the TMBs constantly moving.
    Special to the Journal

    Photos courtesy of Sound Transit [enlarge]
    Both TBMs used for Sound Transit’s Capitol Hill to Husky Stadium route are being guided with lasers and computers.

    In the tunnel boring business, like all facets of construction and design, time is of the essence.

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