(Solved): A certain column carries a vertical downward load of 1,200kN. It is to be supported on a 1m deep, ...

A certain column carries a vertical downward load of $1,200\mathrm{kN}$. It is to be supported on a $1\mathrm{m}$ deep, square footing. The soil beneath this footing has the following properties: $?=20.5\mathrm{kN}/{\mathrm{m}}^3,c^{?}=5\mathrm{kPa}$, and ${?}^{?}=36^{?}$. The groundwater table is a depth of $1.5\mathrm{m}$ below the ground surface. Using ASD, compute the footing width required for a factor of safety of 3 .