$7\mathrm{.}3$ A $1\mathrm{.}5$m times $2\mathrm{.}0$m rectangular foundation is placed at $1\mathrm{.}0$ m

depth in sand where $\backslash$phi $^(\text{'})=40\backslash$deg and $\backslash$gamma $=18\mathrm{.}5$k$($N$)/($m$^(3)).$ Bedrock

is present at $1\mathrm{.}0$ m below the foundation. Using Eq$.(7\mathrm{.}3),$

determine the ultimate bearing capacity of the foundation.