What does the term 'effective stress' in soil mechanics refer to?

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Question: What does the term \'effective stress\' in soil mechanics refer to?

Options:

Correct Answer: Total stress minus pore water pressure

Solution:

Effective stress is defined as total stress minus pore water pressure, which is crucial for understanding soil behavior.

What does the term 'effective stress' in soil mechanics refer to?

What does the term 'effective stress' in soil mechanics refer to?

Step 1: Understand that soil is made up of solid particles and water.
Step 2: Recognize that when weight is applied to soil, it creates total stress.
Step 3: Know that pore water pressure is the pressure of water in the spaces between soil particles.
Step 4: Learn that effective stress is calculated by subtracting pore water pressure from total stress.
Step 5: Realize that effective stress is important because it helps us understand how soil will behave under different conditions.

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