Practice Uniform Excess Pore Water Pressure With Depth (1.4) - Terzaghi’s 1D Consolidation Equation

Practice: Uniform excess pore water pressure with depth

Lesson 1.4Terzaghi’s 1D Consolidation Equation

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10 questions

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6 sample questions

Question 1.
What is pore water pressure?
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Think about what happens in soil when it's saturated.
Question 2.
What does one-dimensional consolidation theory assume about soil layers?
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What do these terms mean in relation to soil characteristics?
3Question 3.
What assumption is made about the coefficient of permeability in one-dimensional consolidation?
- Varies with depth
- Constant
- Varies with time
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Recall the assumptions about soil behavior.
4Question 4.
True or False: All soil layers are assumed to be compressible in the one-dimensional consolidation theory.
- True
- False
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Consider what 'compressible' means.
Question 5.
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.
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Consider the factors influencing discharge rate and use appropriate equations.
Question 6.
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.
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Remember to convert stresses to compatible units.

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