Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 15, Problem 15.11P
To determine
Find the height (H) of the slope that will have a factor of safety of 2.95 against sliding.
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H.W
For the stressed soil element shown in Figure, determine:
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Use the theoretical(equations) method and the pole method.
100 kN/m²
D
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A
500 kN/m²
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(a) Show that sand will be stable (i.e., no sliding sliding) if
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Chapter 15 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Prob. 15.4PCh. 15 - Prob. 15.5PCh. 15 - Prob. 15.6PCh. 15 - Prob. 15.7PCh. 15 - Prob. 15.8PCh. 15 - Prob. 15.9PCh. 15 - Prob. 15.10P
Ch. 15 - Prob. 15.11PCh. 15 - Prob. 15.12PCh. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Prob. 15.16PCh. 15 - Prob. 15.17PCh. 15 - Prob. 15.18PCh. 15 - Prob. 15.19PCh. 15 - Prob. 15.20PCh. 15 - Prob. 15.21PCh. 15 - Prob. 15.22PCh. 15 - Prob. 15.23PCh. 15 - Prob. 15.27PCh. 15 - Prob. 15.28PCh. 15 - Prob. 15.29PCh. 15 - Prob. 15.30PCh. 15 - Prob. 15.31PCh. 15 - Prob. 15.32P
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Similar questions
- b=1,5arrow_forwardFigure 3 shows the stresses at failure for a point in a soil mass. Note A.U. (a) Draw the Mohr Circle for this point. (b) Determine the Pole Location. (c) Determine 01 and 03. (d) If the soil cohesion, c = 1.0, what is the friction angle of the soil, o? (e) Determine Tƒƒ and off. (f) What are the orientation of the failure planes, cr? 2 3 5 20° 51°arrow_forwardExample A direct shear test when conducted on a remolded sample of sand, gave the following observations at the time of failure; Normal force = 288 N; shear force 173 N. The cross sectional area of the sample= 36cm². Determine the angle of frictional. Solved in 2 ways, namely graphically and analytically (31 degrees) Barrow_forward
- Soil Mechanics. Solve ASAP. A soil profile is shown in the following figure. Calculate the values of σ, u and σ’ at point A, B, C and D. Plot the variation of σ, u and σ’ with depth. Values are given in figure.arrow_forwardSubject: Soil Mechanicsarrow_forwardAn earth embankment is shown in the figure. Determine the stress increase at point B due to the embankment load. Use 2 methods. 7 m 15 m Unit weight y = 19 kN/m3 8 m Barrow_forward
- a. A shear vane test, done on a deposit of soft alluvial clay required a torque of 67.5 Nm. The dimensions of the vane were: D = 75 mm; H= 150 mm. What is the value for the undrained %3D shear strength of this clay soil?. 160 KN lun?arrow_forwardA soil profi le consists of a clay layer underlain by a sandlayer, as shown in Figure P7.17. If a tube is inserted intothe bottom sand layer and the water level rises to 1 mabove the ground surface, determine the vertical effective stresses and porewater pressures at A, B, and C. IfKo is 0.5, determine the lateral effective and lateral totalstresses at A, B, and C. What is the value of the porewater pressure at A to cause the vertical effective stressthere to be zero?arrow_forwardExercises at the end of the third chapter of Goodman's book Introduction to Rock Mechanicsarrow_forward
- SITUATION 2: A sample of dry soil is subject to a tri-axial test and is found to have an angle of friction equal to 29° and a minor principal stress of 150 kPa. 8. Determine the deviator stress of failure of the soil sample. a. 282.309 kPa b. 186.556 kPa c. 1046.36 kPa d. 141.155 kPa 9. The value of major principal stress óf failure. b. 366.556 kPa d. 432,309 kPa a. 291.155 kPa c. 1196.36 kPa 10. The normal stress when the soil where shear occurs on the failure plane is most likely equal to: a. 282.998 kPa c. 222.721 kPa b. 272.721 kPa d. 232.998 kPaarrow_forward2: An embankment shown in the figure is constructed. compute the vertical stress increment under Points A. B. and C at z = 10 m Use vertical stress Increment under an embankment loads? 10 m 12 m 10 m Y₁-192 kN/m² Take value of 15 from chart s6v=9[sarrow_forward6. A cylindrical sample of soil is iso-tropically compressed at 150 KPa under drained condition. Subsequently, the axial stress was held constant and the radial stress was increased to 300 kPa under an undrained condition. (a) Calculate the initial mean effective stress and deviatoric stress. Create a graph with the x-axis as p, p' and the y-axis as q (p, q space). Plot these values in (p, ) space. (b) Calculate the increase in mean total stress and deviatoric stress. (c) Plot the total and effective stress paths (assume the soil is a linear, isotropic, elastic material). (d) Determine the slopes of the total and effective stress paths and the maximum excess porewater pressure for each space.arrow_forward
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