How should the groundwater table move to have an effective stress of 95kPA, 2m from the bottom of the profile? For specific gravity, Gs = 2.68.
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- Repeat Problem 10.12 for q = 700 kN/m2, B = 8 m, and z = 4 m. In this case, point A is located below the centerline under the strip load. 10.12 Refer to Figure 10.43. A strip load of q = 1450 lb/ft2 is applied over a width with B = 48 ft. Determine the increase in vertical stress at point A located z = 21 ft below the surface. Given x = 28.8 ft. Figure 10.43For the same line loads given in Problem 10.8, determine the vertical stress increase, z, at a point located 4 m below the line load, q2. Refer to Figure 10.41. Determine the vertical stress increase, z, at point A with the following values: q1 = 110 kN/m, q2 = 440 kN/m, x1 = 6 m, x2 = 3 m, and z = 4 m. Figure 10.41A flexible circular area of radius 3.3 m. is uniformly loaded by q = 315 kN/m². Determine the increase in vertical stress, 3.5 m. deep at its center.
- The soil in a deposit underlying an area where a level ground surface exists has a unit weight of 22 kN/m3. Determine the principal stresses o1 and oz at a depth of 5 m below the soil surface if the lateral pressure is 0.50 of the vertical pressure. Adjust your answer to ZERO decimal places. 01 = kN/m2, 03 = kN/m2The soil stress state is shown in the figure, σx = 10 kN/m2, σy = 50 kN/m2, τxy = -10 kN/m2:(1) Please use Mohr circle to draw the soil stress state(2) Calculate the maximum principal stress σ1 and the minimum principal stress σ3(3) Please find the (pole) position(4) What is the angle of intersection between the maximum principal stress surface and the horizontal plane?44.) 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 Question 1: B. 3.99 Question 1: C. 6.44 Question 1: D. 8.49 Question 2: A. 168.9 Question 2: B. 44.1 Question 2: C. 120.1 Question 2: D. 124.8 Question 3: A. 1.83 Question 3: B. 7.67 Question 3: C. 3.17 Question 3: D. 6.33
- A granular soil is subjected to a minor principal stress of 200 kN/m2. If the angle of internal friction is 30°.What is the maximum shear stress induced? a.300 b.200 c.224.2 d.173.2The soil stress state is shown in the figure, σx = 10 kN/m2, σy = 50 kN/m2, τxy = -10 kN/m2 What is the angle of intersection between the maximum principal stress surface and the horizontal plane?A granular soil is subjected to a minor principal stress of 200 kN/m2. If the angle of internal friction is 30°, determine the inclination of the plane of failure with respect to the direction of the major principal stress. Show free body diagram. a.30 b.45 c.60 d.37.5
- 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 soil element shown in figure 1 where the magnitude stresses on σx= 10KN/m3 and τ= 40Kn/m3, σy = 300KN/m3 and ø = 20. Determine a) The magnitude of Principle stresses. b) Normal and Shear stresses on plan AB.A 5m thick clay (Gs = 2.65, water content = 0.28) is overlain by a 4.5m thick layer of sand (Gs = 2.60, e = 0.70, S = 0.85). The ground water table is locate 4.5m from the ground surface. 1. at what depth would the vertical effective stress be equal to 120kpa?2. what is the vertical effective stress at a depth 9m below the ground surface? 3. what depth of excavation required to reduce the effective stress at the bottom of the clay layer by 100kpa?