Chapter 7, Problem 7.3QPP

A 5 ft wide, 8 ft long, 2 ft deep spread footing is underlain by a soil with the following properties: $\gamma =120{\text{lb/ft}}^{\text{3}},c\text{'}=100{\text{lb/ft}}^{\text{2}},$ and $\varphi \text{'}=28°.$ The groundwater table is at a great depth. Using Vesic’s method, compute the column load required to cause a bearing capacity failure.