A $10\mathrm{.}0-$m thick clay with single drainage is to have a fill placed above it with an induced load, $\backslash$sigma z$,$ of $50$ kN$/$m$2$

$.$

The coefficient of consolidation, cv$,$ in the clay is $0\mathrm{.}003$ m$2$

$/$d$.$ What is the hydrostatic pore$-$water pressure, uh$,$

at a time, t$,10$ years after the placement of the load and at a point $4$ meters above the bottom of the stratum?

$2.$ What is the excess pore$-$water pressure, ue$,$ at the same time and location?

$3.$ What is the total pore$-$water pressure, u$,$ at the same time and location?

$4.$ What is the excess pore$-$water pressure, ue$,$ at the same time and location but with dual drainage?