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A proposed square footing carrying a total load of 2,100 kN is to be constructed on...

A proposed square footing carrying a total load of 2,100 kN is to be constructed on a uniform dense clean gravel. The gravel’s dry unit weight is 20.7 kN/m3, and its angle of internal friction is 34°. The depth of the footing is 1.7 m below the ground surface. Groundwater was not detected during the drilling program. Determine the minimum dimensions of this proposed footing, using a factor of safety of 3 and an assumed footing thickness of 0.5 m.

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