GATE Civil Engineering (CE) 2014 Shift 2 Solved Paper

A circular raft foundation of 20 m diameter and 1.6 m thick is provided for a tank that applies a bearing pressure of 110 kPa on sandy soil with Young's modulus, E_S' = 30 MPa and Poisson's ratio, υ_S = 0.3. The raft is made of concrete (E_C = 30 GPa and υ_C = 0.15). Considering the raft as rigid, the elastic settlement (in mm) is