Mark Wijnberg Land Surveyors Hillcrest Twitter

Coleman Tunnelling

Client: Coleman Tunnelling

Brief: Tunnel survey, TBM gyroscope adjustments

Location: Mahatma Gandhi Road, Durban, South Africa

This complex pipe jacking project took place under 400m of road in Durban Point area. It involved the guidance of a 1.4m wide tunnel boring machine and later the corrections of its course. The machine ended up off target by 15mm in the horizontal and 2mm in the vertical.

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