Prob. 2) Find the depth of the borehole required for the site investigation in which a circular footing of 3 m diameter is constructed at a depth of 2 m below the ground surface; the foundation is subjected to a load of 1560 kN. Notes: 1. Water table (W.T) is located at 1.5 m below the ground surface (G.S.). 2. Bedrock layer is located at 22 m below G.S. 3. Dry and saturated unit weights of the soil is 17 and 19 kN/m, respectively. CS Scanned with CamScanner