I have an existing structure (3-story) 1 to 2 meters from a retaining structure, Soldier pile (5.2 meter excavating)with tieback. The soil profile behind the retaining structure is loose clayey sandy soil (layer thickness 1.5 to 2.5 meter) overlying on soft to medium stiff lean clay, water table is about 1.75 to 2 meter from ground surface. The structure foundation start showing settlement (3.8 cm) when the contractor start dewatering. there is no deflection in the retaining structure.
Anyone with experience on this condition?
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