A 3 x 3 pile group with pile spacing of 1 m and pile diameter of 0.40 m supports a load of 3 MN. Which of the following most nearly gives the consolidation settlement of clay layer in millimeter (e=0.65, Cc=0.30)?
Extracted text: 2m dense sand y = 17 kN/m Yo = 17.50 kN/m 10 m 3 m soft clay y = 19.80 kN/m' 5 m rock