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Mechplant has supplied the shoring to support the excavation for a pumping station at Wessex Water's Kingston Seymour Sewage Treatment Works in Clevedon, north Somerset.

The 12m by 9.6m by 5.6m deep excavation was in 'extremely poor' ground, predominantly very soft alluvial clay, with a high water table - groundwater was standing just 1m below ground level.

Main contractor Costain used steel sheet piling braced with three Mechplant 1,500 series hydraulic shoring frames to provide temporary support for the excavation. Because of the large calculated frame loads, the lower pair of frames was braced with 125t capacity MP125 hydraulic struts across the corners.

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