Problem $2(8$ Marks$)$: A $10-$m high MSE wall is to be constructed with level backrill, the granular backfill has unit weight of $18k\frac{N}{m^3}$ and an angle of friction of $30.$ The steel strip's width $(w)=85mm,$ vertical spacing $($Sv$)0\mathrm{.}4m,$ horizontal spacing $($Sii$)1\mathrm{.}2m,$ and

a$)$ Total thenges of strip required $($t$)$ in mm$.12$ Marks$]$

o$)$ Skerch the MSE Wall showing all dimensions and properties. $[2$ Marks$]$