Situation $2$: A soil profile shown has a zone of capillary rise in the sand overtying the clay.

In this zone, the average detree of saturation is $60\%$ with a moist unit weight of $17\mathrm{.}6k\frac{N}{m}3.$

Compute the effective stress inside the capillary zone at a depth of $3\mathrm{.}0$ m below the ground surface. $(5$ pts $)$

a$.92\mathrm{.}31$ kPa

b$.54\mathrm{.}80$ kPa

c$.6534$ kPa

d$.0$ kPa

Effective stress at a depth of $3\mathrm{.}9$ m below the ground. $(5$ pts$)$

a$.92\mathrm{.}31$ kPa

b$.54\mathrm{.}80$ kPa

c$.65\mathrm{.}34$ kPa

d$.0$ kPa

Compute the effective stress at C $.(5$ pts $)$

a$.92\mathrm{.}31$ kPa

b$.54\mathrm{.}80$ kPa

c$.65\mathrm{.}34$ kPa

d$.0$ kPa