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QUESTION 2 A square footing has to be designed using Terzaghi's bearing capacity equation on a...

QUESTION 2 A square footing has to be designed using Terzaghi's bearing capacity equation on a soil with these given parameters: unit weight =115 lb/ft? effective angle of internal friction = 30°, effective cohesion = 500 lb/ft, factor of safety = 3. The bottom of the footing is located at 5 ft below the ground surface. The ground water table is far below the bottom of the footing and has no impact on soil bearing capacity. What is the minimum size of the footing if it has to support a gross vertical load of 80.000 lb?

A. 2.5 ft x 2.5 ft b.

B   2.0 ft x 2.0 ft

C. 3.0 ft X 3.0 ft

D. 3.5 ft X 3.5

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