1.4 - Uniform excess pore water pressure with depth
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Practice Questions
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What is pore water pressure?
💡 Hint: Think about what happens in soil when it's saturated.
What does one-dimensional consolidation theory assume about soil layers?
💡 Hint: What do these terms mean in relation to soil characteristics?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What assumption is made about the coefficient of permeability in one-dimensional consolidation?
💡 Hint: Recall the assumptions about soil behavior.
True or False: All soil layers are assumed to be compressible in the one-dimensional consolidation theory.
💡 Hint: Consider what 'compressible' means.
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Challenge Problems
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A soil layer 10 m deep has a permeability of 1x10^-4 m/s. Calculate how long it would take for the excess pore water pressure to decrease by 50% if drainage occurs from both ends.
💡 Hint: Consider the factors influencing discharge rate and use appropriate equations.
Given a soil element experiences an increase in vertical stress from 100 kPa to 200 kPa, with a coefficient of volume compressibility of 0.005 m²/kN, calculate the volume change of a 1 m³ soil element.
💡 Hint: Remember to convert stresses to compatible units.
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