Question $1$

$[6]$

In the profile shown in the figure, steady vertical seepage is occurring. The specific gravity of the solids for all soils is $2\mathrm{.}75.$ Determine:

A$.$ The direction in which seepage is occurring? Justify your answer.

$1$

B$.$ The flow gradient $(i)$ in soils A and B$.$

$[2]$

C$.$ The total vertical stress, pore water pressure and effective vertical stress at elevation $-3m.$

$2$

D$.$ The total vertical stress, pore water pressure and effective vertical stress at elevation $-7\mathrm{.}5m.$

$1$