Problem $3$

$,$ A Strip foundation with a width of $2.m$ is constructed on a soil with property

Unit weight $=16\mathrm{.}4\frac{KN}{M^3}$

Frictional angle $=22$

$,$ Cohesion of the soil $=60\frac{KN}{M^2}$

Depth of the foundation is $=1\mathrm{.}5m$

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

$,$ And General shear failure occur in the soil.