Problem $3$: a$)$ For the flownet shown in the following figure, estimate the seepage $($discharge$)$ in the central trench if $k=3{10}^{-4}\frac{m}{s}.$ Assume the length of trench to be $100m,(5$ points$)$

b$)$ The trench is to be kept dry for construction activity for $30$ days, find the number of dewatering pumps required. Each pump has a capacity of $25li\frac{t}{sec}$

$(5$ points$)$

c$)$ Use EXCEL or MATLAB to plot water pressure distribution on each side of the sheet pile. Show one sample calculation. Hint: You can choose points where equipotential line starts $(5$ points$)$