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CONTRACTS

CONTRACTS

A leaning Cheshire war memorial has been straightened in just one day by resin injection beneath its foundations.

Groundwater and poorly compacted fill had caused the 1921 monument to tilt 67mm out of vertical.

Crewe and Nantwich Borough Council appointed BDS Consultants which produced a plan to re-level the monument and stabilise the foundations.

Contractor Uretek was called in to inject resin in the foundation soils.

After lifting the York stone slabs surrounding the base of the monument, Uretek drilled a series of injection holes at 1m intervals around half the perimeter of the base to depths of 1m and 2m.

Resin was injected in the 2m deep holes first, to lift the monument by 5mm to 10mm. Injections in the 1m holes added stability.

After a second round of 2m injections it took only 40 minutes to bring the monument into plumb.

Further stabilisation was achieved with injections in 1m holes on the opposite side. This produced some counter movement which was corrected with subsequent applications to the initial side.

After five hours of treatment the monument had been corrected to within 1mm in all planes.

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