A square foundation is 2 m x 2 m is to be laid at a depth of 1.2 m below ground surface of sandy soil. The bearing soil properties are as follows: = 15 /3 = 20 /3 = 30 Determine the ultimate bearing capacity of the foundation using Terzaghi's BCE for the following situations a) When the ground water is 5 meters below ground level b) When the ground water is 1.5 meters below ground level