In soil mechanics, what does the term 'effective stress' refer to?

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Question: In soil mechanics, what does the term \'effective stress\' 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.

In soil mechanics, what does the term 'effective stress' refer to?

In soil mechanics, what does the term 'effective stress' 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 a total stress.
Step 3: Know that water in the soil creates pressure, called pore water pressure.
Step 4: Learn that effective stress is calculated by subtracting pore water pressure from total stress.
Step 5: Remember that effective stress is important because it helps us understand how soil behaves under different conditions.

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