Figure $($B$1)$ shows a weir section, constructed on a clayey sand layer where the coefficient of permeability is $1\mathrm{.}8{10}^{-3}\frac{m}{s}.$ For this question, you are required to:

Draw the flow net for seepage.

Determine the quantity of seepage $($flow rate per meter$)$ in $\frac{m^3}{s}$ per meter under the dam.

Plot the distribution of uplift pressure in kPa on the base of the weir base.

Determine the uplift force in $kN$ per unit length of the weir.

Plot pore pressure $($ kPa $)$ diagrams along lines $A-B$ and $C-D$ as per below information and Figure $($B$1)$:

a$.$ Pints $($A$)$ and $($C$)$ are located $3$ m below the weir base, and

b$.$ Lines $(AB)$ and $(CD)$ are vertical.