(Solved):   can anyone please help to solve this? Consider the soil profile shown in the following fig ...

 

can anyone please help to solve this?

Consider the soil profile shown in the following figure. The soil is subjected to an uniformly distributed load \( \Delta \sigma=31.1 \mathrm{kN} / \mathrm{m}^{2} \) on the ground surface. The sand, Is such that \( \gamma_{d}=16.5 \mathrm{kN} / \mathrm{m}^{3} \) and \( \gamma_{\text {satsand }}=19.3 \mathrm{kN} / \mathrm{m}^{3} \); the underlying clay has \( \gamma_{\text {satelay }}=20.5 \mathrm{kN} / \mathrm{m}^{3}, L L=38, e_{0}=0.89 \), and \( C_{3}=0.25 C_{6} \) Depths \( \mathrm{H}_{1}, \mathrm{H}_{2} \), and \( \mathrm{H}_{3} \) are as shown. Determine the primary consolidation displacement of the normally consolidated clay layer.