$($b$)$ An Infinite slope is to be constructed of a clay soil at a slope angle of $32.$ The goound water

table is at the ground surface itself, with seepage parallel to the ground. The geote $050$ d

properties of soil are $c^{\text{'}}=20$kPa,${}^{\text{'}}=25$ and ${}_{\text{s}\text{a}\text{t}}=20k\frac{N}{m^3}$