StepsQ$3$: $/$A$/$ A $2\mathrm{.}0-$m$-$wide square footing shown below carries a column load of $500$ kN $.$ Unit weight of concrete is $24\mathrm{.}0k\frac{N}{m}m-$ The properties of the clay are: $c^{\text{'}}=5k\frac{N}{m^2},{}^{\text{'}}=25,$ and $=18\mathrm{.}0k\frac{N}{m}3.$ What is the factor of safety with respect to bearing capacity failure? Use Vesic's $N..$