What is the effect of soil permeability on settlement?

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Question: What is the effect of soil permeability on settlement?

Options:

Correct Answer: Higher permeability leads to faster consolidation

Solution:

Higher permeability allows for quicker dissipation of pore water pressure, leading to faster consolidation and thus faster settlement.

What is the effect of soil permeability on settlement?

What is the effect of soil permeability on settlement?

Step 1: Understand what soil permeability means. It refers to how easily water can flow through the soil.
Step 2: Know that when soil is saturated (full of water), it can create pressure in the spaces between soil particles, called pore water pressure.
Step 3: Realize that if the soil has high permeability, water can escape quickly from the soil.
Step 4: When water escapes quickly, the pore water pressure decreases faster.
Step 5: As the pore water pressure decreases, the soil particles can settle closer together, which is called consolidation.
Step 6: Faster consolidation means that the ground will settle more quickly.
Step 7: Therefore, higher soil permeability leads to quicker settlement of the ground.

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