Consider a slope shown in Figure $1.$ Triaxial tests have been conducted for Soils A and $\backslash ($ B $\backslash )$ with varying initial cell pressures. The results of the triaxial tests are presented in Table $1.$ Tests $1$ and $2$ are for Soil A while Tests $3$ and $4$ are for Soils B$.$

Figure $1$ Geometry of a slope and triaxial test

Table $1$ Triaxial test results

$4.$ Draw the stress element with the maximum shear stress for Test $1[20\backslash \%].$

$5.$ In an investigation of the slope, a trial slip surface $($i$.$e$.$ the red curve in Figure $1)$ is chosen in the form of a circular arc with a radius of $23\mathrm{.}6$ m $.$ The bulk unit weight of Soil $\backslash ($ A $\backslash )$ and $\backslash ($ B $\backslash )$ is $\backslash (17\mathrm{.}0\backslash$mathrm$\{$KN$\}/\backslash$mathrm$\{$m$\}^\{3\}\backslash )$ and $\backslash (17\mathrm{.}8\backslash$mathrm$\{$KN$\}/\backslash$mathrm$\{$m$\}^\{3\}\backslash ),$ respectively. Calculate the Factor of Safety using the limit equilibrium method based on given slices $[40\backslash \%].$