A normally consolidated clay layer in the field has a thickness of 3.2 m with an average effective stress of 70 kN/m^2. A laboratory consolidation test on the clay gave the following results:
Pressure (kN/m^2)=100, 200 Void Ratio=0.905, 0.815
a.) determine the compression index, Cc.
b.) If the avg. effective stress on the clay layer is increased to 115kN/m^2, what would be the total consolidation settlement?