A clay layer $24$m thick as a saturated unit wt of $18$ kn$/$m GWT is $4$m below Ground surface it is proposed construct a retangular foundation of $12$x$48$m dimensions on the top of the layer transmitting a uniform pressure of $180$ KN$/$m$.$ determine the settlement of the foundation by cal. the pressure at the contre of foundation Eclay $=33$ N$/$m $\backslash$mathcal$\{$E$\_\{0\}\}=0\mathrm{.}69$ DR$-0\mathrm{.}02$