Refer to Figure 11.48. A square foundation, 2.5 × 2.5 m in size, supports a col- umn load of 478 kN. The soil characteristics are given in the figure. Field moni- toring indicated that the foundation settlement was 46 mm at the end of 2 years. a. Estimate the average stress increase in the clay layer due to the applied load. b. Estimate the primary consolidation settlement. c. What is the degree of consolidation after 2 years? d. Estimate the coefficient of consolidation for the pressure range. e. Estimate the settlement in 3 years. 478 kN 2.5 m x 2.5 m 1.5 m Ya - 16 kN/m³ GWT 1.75 m Yut - 18.8 kN/m3 19% G, = 2.71 LL = 37 o'. = 65 kN/m² C, = 1/5C. 3.5m Sand | Clay Figure 11.48

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Pressure and Stress