Q$\mathrm{.}2$ A low plasticity silt soil $($ML$)$ was tested and the soil has $c=0$kPa,${}^{\text{'}}=28,=21,$AEV$=20$kPa, $G_s=2\mathrm{.}7,$ dry density $18\mathrm{.}5k\frac{N}{m^3},$ residual suction $({}_r)=10000$kPa,$n=3,m=5,k=0\mathrm{.}5,a=50,$ saturated volumetric water content $({}_5)=3\mathrm{.}148k\frac{N}{m^3}.$ Find the shear strength $(),{}^b,$ or $()$ for the following conditions:

$(40$ marks$)$

$\backslash$table$[[$Net normal stress,Matric suctio,volumetric water,$,{}^b,$ or$],[$at failure,at failure,content $(),,,()$