Q$4.$ The applied load on shallow square foundation makes an angle of $10$ with the vertical. Given:

$B=2\mathrm{.}5m,D_f=1\mathrm{.}8m,{}^{\text{'}}=18\mathrm{.}5k\frac{N}{m^3},{}^{\text{'}}=22,$ and $c^{\text{'}}=28k\frac{N}{m^2}.$ Use $FS=3$ and determine the gross

allowable load. Use Meyerhof's general bearing capacity equation. $($Use bearing capacity shape,

depth and inclination factors.$)$