85 kN/m2 25 kN/m2 Try solving the following problem: Practice Problem 1: (Repeat practice problem from Module 2, Unit 1 using Mohr's Circle) A soil element is shown in Figure 2.21. Determine the following: a. Maximum and minimum principal stresses В to +1 45 kN/m2 25 kN/m2 40° A b. Normal and shear stresses on plane AB Figure 2.21

85 kN/m2 25 kN/m2 Try solving the following problem: Practice Problem 1: (Repeat practice problem from Module 2, Unit 1 using Mohr's Circle) A soil element is shown in Figure 2.21. Determine the following: a. Maximum and minimum principal stresses В to +1 45 kN/m2 25 kN/m2 40° A b. Normal and shear stresses on plane AB Figure 2.21

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Lateral Earth Pressure

Section: Chapter Questions

Problem 16.4P: In Problem 16.3, if there was a surcharge of 20 kN/m2 at the ground level, what would be the total...

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An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 (from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the effective stress in kPa at a depth of 20 m. If the pore pressure at this point is shown by a piezometer to be 180 kPa. a. 62.5 b. 372.8 c. 192.8 d. 21.6
In Problem 16.3, if there was a surcharge of 20 kN/m2 at the ground level, what would be the total horizontal normal stresses at A and B? Use the results from Problem 16.3. 16.3 The soil profile at a site is shown Figure P16.3. Find the total horizontal normal stresses at A and B, assuming at-rest conditions.
Redo Problem 6.12 using Figure 6.15. 6.12 Refer to Problem 6.1. Using Eqs. (6.3) and (6.29), estimate the average stress increase (av) below the center of the loaded area between depths of 3 m and 6 m. 6.1 A flexible circular area is subjected to a uniformly distributed load of 150 kN/m2 (Figure 6.2). The diameter of the load area is 2 m. Determine the stress increase in a soil mass at points located 3 m below the loaded area at r = 0, 0.4 m, 0.8 m, and 1 m. Use Boussinesqs solution. Figure 6.2 Increase in pressure under a uniformly loaded flexible circular area
An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. Show free body diagram a.21.6 b.372.8 c.192.8 d.62.5
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.173.2
An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. a. 192.8 b. 62.5 c. 21.6 d. 372.8
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 shear stress on the plane of failure? a.173.2 b.300 c.200 d.224.2
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
Given H1 = 8.3 m., and H2 = 4.43 m. If the ground water table rises by 2.29 meters, determine the change in effective stress (numerical value only, in kPa) at the bottom of the clay layer. Properties of dry sand: Gs = 2.59, e = 0.61. Properties of clay: Gs = 2.74, e = 0.86. Round off to two decimal places. Answer: 13.95
A strip load of q =53 kN/m^3 is applied over a width B =11m. Determine the increase in vertical stress in kPa at point A located z = 4.6 m below the surface. x = 8.2m
Consider the soil profile shown inFigure 1.4: How high should thegroundwater table rise/drop so thatthe effective stress at C is 130 kN/m2?
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/m2