4.3.2.3 - Direct Shear Test
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Practice Questions
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What does the Direct Shear Test measure?
💡 Hint: Think about what properties are crucial in soil mechanics.
What are the two key parameters obtained from the test?
💡 Hint: Remember the acronym 'CIF' we discussed.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary goal of the Direct Shear Test?
💡 Hint: Focus on what the test specifically addresses regarding soil behavior.
True or False: The failure envelope in a Direct Shear Test corresponds to the shear resistance of a soil.
💡 Hint: Think about what happens at the point of failure in soil.
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Challenge Problems
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Consider a soil sample that shows a cohesion value of 15 kPa and an internal friction angle of 25°. How would you expect this soil to perform in terms of stability under loading? Discuss.
💡 Hint: What happens to soil when subjected to stress relative to its strength?
In a Direct Shear Test, a soil sample fails at a normal stress of 200 kPa with a maximum shear stress of 100 kPa. Calculate the effective cohesion and friction angle, given the water table has significant effects.
💡 Hint: Remember to factor in any pore water pressure impacts.
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