The soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which is underlain by a stiff stratum. The water table is at 2 m below the ground level. The follow- ing data was obtained from a consolidation test on an undisturbed sample obtained from the middle of the clay layer: water content 36%, specific gravity of the clay grains = 2.72, compression index = 0.72, recompression index = 0.07, preconsolidation pressure = 85 kPa. The bulk and saturated unit weights of the sand are 17 kN/m' and 18.5 kN/m' respectively. The ground level was raised by placing 2 m of compacted fill with a unit weight of 20 kN/m'. Estimate the final consolidation settlement. It is proposed to construct a warehouse covering a large area on top of the raised ground, which is expected to impose a pressure of 25 kPa. What would be the additional consolida- tion settlement?

The soil profile at a site consists of a top 4 m layer of dense sand followed by 2 m of clay, which is underlain by a stiff stratum. The water table is at 2 m below the ground level. The follow- ing data was obtained from a consolidation test on an undisturbed sample obtained from the middle of the clay layer: water content 36%, specific gravity of the clay grains = 2.72, compression index = 0.72, recompression index = 0.07, preconsolidation pressure = 85 kPa. The bulk and saturated unit weights of the sand are 17 kN/m' and 18.5 kN/m' respectively. The ground level was raised by placing 2 m of compacted fill with a unit weight of 20 kN/m'. Estimate the final consolidation settlement. It is proposed to construct a warehouse covering a large area on top of the raised ground, which is expected to impose a pressure of 25 kPa. What would be the additional consolida- tion settlement?