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5 cards from this section. Quick, good the night before a test.
What type of soil is suitable for constant head flow measurement?
Think about the characteristics of soil types.
What method is recommended for fine-grained soils?
Consider how water movement varies in fine soils.
What type of head is maintained in constant head flow?
Consider what 'constant' means in this context.
Is Darcy's law applicable to isotropic materials?
Think about the definition of isotropic materials.
A constant head permeameter shows a consistent head drop of 0.5 m over a 1 m length of coarse-grained soil with a cross-sectional area of 0.01 m². Calculate its permeability.
Ensure you understand how to rearrange the equation to solve for k.
In a falling head test, the head drops from 1 m to 0.5 m in 10 minutes. Determine the hydraulic gradient and discuss how this would influence water flow in the given soil.
Remember to use the correct values in your calculation after understanding how to derive the gradient.
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