$6\mathrm{.}11$ For a given dam in the following figure,

$($a$)$ Draw the flow net by using $N_t=3.$

$($b$)$ Compute the flow rate qunder the dam.

$($c$)$ Compute the water pressures at the heel $($A$)$ and toe $($B$)$ sections of the base of the dam based on the drawn flow net.

Flow rate, q$,$ should equal around $0\mathrm{.}505$ cm$^3/$sec$/$cm