1.2 - Consolidated-drained test (CD test)
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Practice Questions
Test your understanding with targeted questions
What does σ3 represent in triaxial tests?
💡 Hint: Think about the pressure exerted on the soil.
What is the main purpose of a Consolidated-Drained test?
💡 Hint: Consider how soil behaves when water can escape.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of the Consolidated-Drained test?
💡 Hint: Think about the properties engineers need for design.
True or False: The Mohr-Coulomb failure envelope only applies to saturated soils.
💡 Hint: Consider other soil conditions outside saturation.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A soil sample yields a cohesion of 5 kPa and an angle of internal friction of 30 degrees during a CD test. Calculate the shear strength of the soil when the normal stress is 20 kPa.
💡 Hint: Remember to convert the angle from degrees to use in the tangent function.
An engineer needs to design a wall in clay known to have a failure envelope of c = 8 kPa and φ = 25 degrees. What factors should the engineer consider if the wall is to be built below groundwater level?
💡 Hint: Think about what happens to pressures when water is present.
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