Situation 3: 6. 7. 8. From the figure shown a soil formation with its corresponding soil properties and water table is located 2 m below the ground surface. To consolidate the ground, surcharge load at the top or dewatering are being considered. DRY SAND 2 m 4 m 18 m SAND CLAY dry = 15.8 kN/m³ sat 19.1 kN/m³ sat = 20.5 kN/m³ A decision has been made to consolidate the clay layer prior to site development by preloading with a sand layer 2.0 m thick. The sand fill will have a unit weight of 15 kN/m³. Find the increase in stress at the bottom of the clay layer. By dewatering 1.8 m, determine the stress increase at the bottom of the clay layer as water level is lowered down by 1.8 m. By how much should the water be lowered down to be more effective than the surcharge load?

Situation 3: 6. 7. 8. From the figure shown a soil formation with its corresponding soil properties and water table is located 2 m below the ground surface. To consolidate the ground, surcharge load at the top or dewatering are being considered. DRY SAND 2 m 4 m 18 m SAND CLAY dry = 15.8 kN/m³ sat 19.1 kN/m³ sat = 20.5 kN/m³ A decision has been made to consolidate the clay layer prior to site development by preloading with a sand layer 2.0 m thick. The sand fill will have a unit weight of 15 kN/m³. Find the increase in stress at the bottom of the clay layer. By dewatering 1.8 m, determine the stress increase at the bottom of the clay layer as water level is lowered down by 1.8 m. By how much should the water be lowered down to be more effective than the surcharge load?

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Consolidation

Section: Chapter Questions

Problem 9.20CTP

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