A 20 m thick saturated clay layer is normally consolidated. Atmid-depth in this layer, the void ratio (e) is 1.110, thecoefficient of compressibility (av) is 5.74 x103 cm2=N.Recall that w = 9.81 kN/m3. a) Assuming that a 122 cm lowering ofthe ground water table (GWT) occurs in the soil overlying the claylayer, what settlement will occur in the soil overlying the claylayer because of the ultimate primary consolidation of the claylayer? Express your answer in units of centimeters. It may beassumed that the lowering of the ground water table does not changethe moisture content (and thus unit weight) in the soil above thegroundwater table. NOTE: the thickness of the overlying soil layer,as well as it material properties (e.g., the unit weight) are notneeded to solve this problem. b) What is the volumetric strainassociated with the ultimate primary consolidation of the claylayer? Express your answer in percent (%).
