a$)$ Use PLAXIS software, make any necessity assumption required.

b$)$ Use hand calculation

Refer to Figure for which $L_1=2\mathrm{.}4m,L_2=4\mathrm{.}6m,=15\mathrm{.}7k\frac{N}{m^3},{}_{\text{s}\text{a}\text{t}}=17\mathrm{.}3k\frac{N}{m^3},$ and ${}^{\text{'}}=30,$ and $c=29k\frac{N}{m^2}.$

a$.$ What is the theoretical depth of embedment, $D?$

b$.$ What length of sheet piles is needed?

c$.$ Determine the theoretical maximum moment in the sheet pile.