Problem $3.($HKS Problem $6\mathrm{.}16)$ For the case shown below:

Assume the soil has a saturated density of $1810k\frac{g}{m^3}.$ If the head of water $h$ above elevation $B$ is $1\mathrm{.}94$ m $,$ compute the effective stress at elevation $A$ at the bottom of the soil sample during flow. What is the effective stress under these conditions at midheight in the soil column during stead$-$state flow?