1.5 - Shear Strength Parameters
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Practice Questions
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What does a triaxial test help determine?
💡 Hint: Think about the contribution of the test to soil mechanics.
Name the three types of triaxial tests.
💡 Hint: Recall the drainage conditions for each test.
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Interactive Quizzes
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What are the three categories of triaxial tests?
💡 Hint: Recall the tests and conditions discussed.
The effective stress is defined as which of the following: σ' = σ - u?
💡 Hint: Think about how we calculate effective stress.
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Challenge Problems
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A saturated clay sample is subjected to a consolidated-undrained test, yielding a total stress of 200 kPa with a pore water pressure of 75 kPa. Compute the effective stress and discuss its implications for soil stability.
💡 Hint: Remember the effective stress equation.
If a horizontal Mohr’s circle in an unconsolidated-undrained test demonstrates a horizontal tangent line, explain what this implies about the shear strength under varying confining pressures.
💡 Hint: Consider what happens to pore water pressure in saturation.
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