Problem 3: A bridge pier is to be constructed at a depth of 5 m in the soil profile shown below. The sand has a moist unit weight of 18 kN/m³ and a saturated unit weight of 20 kN/m³. The clay layer has a saturated unit weight of 21 kN/m³, Cc = 0.25 and Cr= 0.05 and a maximum past pressure = 180 kN/m², calculate the total settlement (elastic and consolidation) of the bridge pier resulting from the dense sand and the clay layers. Assume gravel layer does not contribute to settlement. 12 MN Pier: 3 m x 10 m 9 m 1 m: 1 m 5 m 3 m. Dense sand e₁ = 0.52 E' = 55 MPa v' = 0.35 ' = 36° clay e=0.95 E' = 15 MPa v' 0.25, vu = 0.45 gravel