Lumsden & Carroll
Locaton: Durham
Technique: Guided auger boring & headings
Main Contractor: Lumsden & Carroll
The job had several unusual features, including the requirement to auger two separate auger shots, side by side from the same 2.4m diameter caisson shaft, together with the final connection to the client’s manhole being made from a timber heading we constructed from the launch caisson at 4 o’clock to the auger direction.
Oxford Hydrotechnics, working under contract to us, injected ground stabilisation resin in a canopy to protect the timber heading and in an ‘eye’ at the caisson to prevent the road sinking during auger boring for the new pipe.
The existing 25” cast iron rising main carries sew...
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