1.7.2 - Internal Friction
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Practice Questions
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What is shear strength?
💡 Hint: Think about the forces that act on particles in soil.
What two components make up shear strength?
💡 Hint: One is about bonding and the other about movement.
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Interactive Quizzes
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What is the main purpose of shear strength?
💡 Hint: Think about forces acting on structures!
The angle of internal friction is...
💡 Hint: Relate it back to sliding and stability.
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Challenge Problems
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A soil sample has an internal friction angle of 36 degrees and a cohesion of 15 kPa. If the vertical stress on the soil is 25 kPa, calculate the shear strength.
💡 Hint: Remember to use the angle in degrees.
Discuss how shear strength is affected by water saturation in soil, providing examples.
💡 Hint: Consider real-world events and how they relate to soil behavior.
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