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• Problem 5 = = A triaxial specimen of loose sand is first consolidated non-hydrostatically, with σ1 15.0 kPa and σ3 10.0 kPa. The sample is then failed by holding the vertical stress con- stant and decreasing the horizontal stress¹ with the drainage valve open. The angle of internal friction () is 30° and the cohesion (c) is zero. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure? • Problem 6 Another sample of the same sand tested in Problem 5 is tested by holding the vertical stress constant and increasing the horizontal stress² with the drainage valve open. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?

• Problem 5 = = A triaxial specimen of loose sand is first consolidated non-hydrostatically, with σ1 15.0 kPa and σ3 10.0 kPa. The sample is then failed by holding the vertical stress con- stant and decreasing the horizontal stress¹ with the drainage valve open. The angle of internal friction () is 30° and the cohesion (c) is zero. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure? • Problem 6 Another sample of the same sand tested in Problem 5 is tested by holding the vertical stress constant and increasing the horizontal stress² with the drainage valve open. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?

Fundamentals of Geotechnical Engineering (MindTap Course List)
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter10: Shear Strength Of Soil
Section: Chapter Questions
Problem 10.10P
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**Only answer problem 6. Problem 5 is only there to help u answer problem 6.

• Problem 5 = = A triaxial specimen of loose sand is first consolidated non-hydrostatically, with σ1 15.0 kPa and σ3 10.0 kPa. The sample is then failed by holding the vertical stress con- stant and decreasing the horizontal stress¹ with the drainage valve open. The angle of internal friction () is 30° and the cohesion (c) is zero. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?
Transcribed Image Text:• Problem 5 = = A triaxial specimen of loose sand is first consolidated non-hydrostatically, with σ1 15.0 kPa and σ3 10.0 kPa. The sample is then failed by holding the vertical stress con- stant and decreasing the horizontal stress¹ with the drainage valve open. The angle of internal friction () is 30° and the cohesion (c) is zero. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?
• Problem 6 Another sample of the same sand tested in Problem 5 is tested by holding the vertical stress constant and increasing the horizontal stress² with the drainage valve open. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?
Transcribed Image Text:• Problem 6 Another sample of the same sand tested in Problem 5 is tested by holding the vertical stress constant and increasing the horizontal stress² with the drainage valve open. a) Draw the Mohr circles for both the initial at “at failure” conditions. b) What will be the major and minor principal stresses at at failure?
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