Problem $1(2\mathrm{.}5$ Point$)$

a$)$ Using a scale of $1$ inch:$10$ feet, sketch a flow net to model steady state seepage beneath the sheet pile below. Do not draw flownet on the printed HW problem unless it conforms to the given engineering scale $(0\mathrm{.}5$ point$)$ b$)$ Using the flow net, estimate the seepage beneath the sheet pile in $\backslash (\backslash$mathrm$\{$ft$\}3/\backslash$mathrm$\{$sec$\}\backslash )$ per $\backslash (\backslash$mathrm$\{$ft$\}(0\mathrm{.}5\backslash )$ point $\backslash ()\backslash$mathrm$\{$c$\})\backslash )$ Estimate the pore pressure at A $(0\mathrm{.}5$ point$)$ d$)$ Estimate the hydraulic gradient at B $(0\mathrm{.}5$ point$)$ e$)$ Estimate the minimum factor of safety against piping. Assume $\backslash (=120\backslash$mathrm$\{$pcf$\}.(0\mathrm{.}5\backslash )$ point $\backslash ()\backslash )$