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How the effective pressure and pore pressure will effect on the soil and what is the difference between these two?
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Pore pressure:- Also called Neutral Stress because it acts on all sides of the particles,but doesn't cause the particles to press against adjacent particles.It is measurable quantity

Effective pressure:- Is the sum of the contact forces between the soil particles divided by gross area.It is not a physical parameter and there's no equipment to measure it.
                              Effective stress=Total stress-pore water pressure
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