Problem $2$

A circular foundation with a diameter of $2\mathrm{.}5m$ is constructed on a soil with property

Unit weight $=18\mathrm{.}4\frac{KN}{M^3}$

Frictional angle $=32$

$,$ Cohesion of the soil $=75\frac{KN}{M^2}$

Depth of the foundation is $=1\mathrm{.}2m$

Determine allowable load bearing capacity of the foundation with factor of safety $3$

And local shear failure occur in the soil.