I'm dealing with a mat foundation to be constructed at 3m below grade level. Dimensions are 20m x 20m. The loading from the structure will be 50 kn/m2. The removed load of soil is estimated around 60 kn/m2 (3mx20kn/m3). Normally I wouldn't expect settlements to occur, however the oedometric tests from the geotech lab indicate that the preconsolidation pressure of the soil is 35 kn/m2. Theoretically, it means that (without construction) the soil is still undergoing consolidation (ocr less than 1). soil is composed of clay with degree of saturation>95%. Modulus of elasticity is 5000 kn/m2.
Will the structure undergo consolidation settlements after the finished grade with the structure because of the ocr value?
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