9.3 - Effective Stress Behavior
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Practice Questions
Test your understanding with targeted questions
What is effective stress?
💡 Hint: Remember the effective stress equation.
Define hydraulic gradient.
💡 Hint: Think of it in terms of water flow direction.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for effective stress?
💡 Hint: Remember the equation and how each term behaves.
True or False: An increase in pore water pressure always increases effective stress.
💡 Hint: Consider the impact of water pressure on soil stability.
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Challenge Problems
Push your limits with advanced challenges
You have a soil layer with a depth of 12 m, total stress of 36 T/m², and pore water pressure of 15 T/m². Calculate the effective stress. Discuss the implications of pore water pressure changes on stability.
💡 Hint: Apply the effective stress equation to analyze stability.
A project involves excavating to a depth of 5 m in an area where the water table is at 3 m. Calculate the effective stress at the bottom of the excavation, and explain what could happen if the water table rises.
💡 Hint: Be careful to consider layers above and any changing conditions!
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