Geotechnical Engineering - Vol 1 | 11. Laboratory Measurement of Permeability by Abraham | Learn Smarter
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Knowledge
11. Laboratory Measurement of Permeability

The chapter discusses the laboratory measurement of permeability in soils, focused on constant and falling head permeameters suitable for coarse and fine-grained soils, respectively. It introduces the continuity equation for analyzing flow in soils and illustrates the application of Darcy's law to derive flow equations in isotropic materials, culminating in the Laplace equation for two-dimensional steady-state flow. Additionally, the chapter touches upon more complex three-dimensional flow scenarios.

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Sections

  • 1

    Laboratory Measurement Of Permeability

    This section discusses laboratory methods for measuring soil permeability using constant and falling head permeameters, emphasizing their application in coarse and fine-grained soils.

    Learning Practice

  • 1.1

    Constant Head Flow

    The section on Constant Head Flow discusses laboratory methods for measuring soil permeability, specifically focusing on coarse and fine-grained soils.

    Learning Practice

  • 1.2

    Falling Head Flow

    The Falling Head Flow method is an essential laboratory technique for measuring the permeability of fine-grained soils.

    Learning Practice

  • 2

    Seepage In Soils

    This section discusses the methods of measuring soil permeability and the fundamental principles of seepage in soils.

    Learning Practice

  • 2.1

    Flow In The X-Direction

    This section covers the measurement of permeability in soils using constant head and falling head methods, focusing on how water flow is generated and measured.

    Learning Practice

  • 2.2

    Flow In The Z-Direction

    This section discusses the measurement of permeability in soils through constant and falling head flow methods and introduces the continuity equation for flow in the z-direction.

    Learning Practice

  • 2.3

    Continuity Equation

    The continuity equation describes the balance of fluid flow in soils, integrating Darcy's law to understand permeability and flow dynamics.

    Learning Practice

  • 2.4

    Combining Darcy's Law With Continuity Equation

    This section integrates Darcy's Law with the Continuity Equation to derive flow equations applicable to soil permeability studies.

    Learning Practice

  • 2.5

    Laplace Equation For Isotropic Material

    This section discusses the application of the Laplace equation for isotropic materials and the principles of steady state flow in soils.

    Learning Practice

  • 2.6

    Laplace Equation For Three-Dimensional Steady Flow

    This section covers the Laplace equation as it applies to three-dimensional steady flow in soils and introduces methods for laboratory measurement of permeability.

    Learning Practice

References

11.pdf

Class Notes

Memorization

What we have learnt

  • Constant head permeameters ...
  • Falling head permeameters a...
  • The Laplace equation govern...

Final Test

Revision Tests