A 5 m-thick clay (Gs = 2.65, water content = 0.28) is overlain by a 4.50m-thick layer of sand (Gs = 2.60, e = 0.70, S = 0.85). The ground water table is located 4.50 m from the ground surface. Compute for the following: 1. At what depth would the vertical effective stress be equal to 120 kPa? 2. What is the vertical effective stress at a depth 9 m below the ground surface? 3. The depth of excavation required to reduce the effective stress at the bottom of the clay layer by 100 kPa.
A 5 m-thick clay (Gs = 2.65, water content = 0.28) is overlain by a 4.50m-thick layer of sand (Gs = 2.60, e = 0.70, S = 0.85). The ground water table is located 4.50 m from the ground surface. Compute for the following: 1. At what depth would the vertical effective stress be equal to 120 kPa? 2. What is the vertical effective stress at a depth 9 m below the ground surface? 3. The depth of excavation required to reduce the effective stress at the bottom of the clay layer by 100 kPa. |
Question 1: A. 1.94 |
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Question 1: B. 3.99 |
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Question 1: C. 6.44 |
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Question 1: D. 8.49 |
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Question 2: A. 168.9 |
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Question 2: B. 44.1 |
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Question 2: C. 120.1 |
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Question 2: D. 124.8 |
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Question 3: A. 1.83 |
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Question 3: B. 7.67 |
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Question 3: C. 3.17 |
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Question 3: D. 6.33 |
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