Problem $1(30$ points$)$

Figure $1$ shows the flow net of earth dam. The coefficient of permeability is ${2\mathrm{.}0}^{*}*{10}^{-3}c\frac{m}{s}.$ The dam is $50m$ long. The soil has ${}_{\text{s}\text{a}\text{t}}=19\mathrm{.}5k\frac{N}{m^3}.$

a$)$ Determine the quantity of seepage across the entire dam per day.

b$)$ Determine the pore water pressure at Point $A$

c$)$ Determine the pore water pressure at Point B$.$