An undisturbed soil sample was taken from the middle of a clay layer (i.e., 1.5 m below GL), as shown in figure. The water table was at the top of clay layer. Laboratory test result are as follows:Natural water content of clay : 25%Preconsolidation pressure of clay : 60 kPaCompression index of clay : 0.50Recompression index of clay : 0.05Specific gravity of clay : 2.70Bulk unit weight of sand : 17kN/m3A compacted fill of 2.5 m height with unit weight of 20kN/m3 is placed at the ground level. Assuming unit weight of water as 10kN/m3, the ultimate consolidation settlement (expressed in mm) of the clay layer is .37.04

An undisturbed soil sample was taken from the middle of a clay layer (

1.	An undisturbed soil sample was taken from the middle of a clay layer (i.e., 1.5 m below GL), as shown in figure. The water table was at the top of clay layer. Laboratory test result are as follows:Natural water content of clay : 25%Preconsolidation pressure of clay : 60 kPaCompression index of clay : 0.50Recompression index of clay : 0.05Specific gravity of clay : 2.70Bulk unit weight of sand : 17kN/m3A compacted fill of 2.5 m height with unit weight of 20kN/m3 is placed at the ground level. Assuming unit weight of water as 10kN/m3, the ultimate consolidation settlement (expressed in mm) of the clay layer is .37.04
Answer» An undisturbed soil sample was taken from the middle of a clay layer (i.e., 1.5 m below GL), as shown in figure. The water table was at the top of clay layer. Laboratory test result are as follows: Natural water content of clay : 25% Preconsolidation pressure of clay : 60 kPa Compression index of clay : 0.50 Recompression index of clay : 0.05 Specific gravity of clay : 2.70 Bulk unit weight of sand : $17 k N / m^{3}$ A compacted fill of 2.5 m height with unit weight of $20 k N / m^{3}$ is placed at the ground level. Assuming unit weight of water as $10 k N / m^{3}$ , the ultimate consolidation settlement (expressed in mm) of the clay layer is . 37.04

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