september 2011 sydenham farm, bridgwater case study groundworks mabey hire Ground Conditions Bad ground - slightly sandy clay at several levels, followed by silt High water table - water shown at -2600mm Equipment Frames - SuperShaft Brace M12 Sheets - 8m/3500mm toe-in Installation Extras Welded cleats Excavation Width - 9.7m Depth - 3.4m Sub-Contractors Highfield Tunnelling, Somerset Length - 14.5m ank installation at the new Sydenham Farm

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