Given data-
With a unit weight of 21 kN/m3,
the total vertical stress = 21 kPa at any depth.
Since there is a water table at the ground surface,
the pore water pressure (u) = the hydrostatic pressure or u = ρgh.
Therefore,
the effective vertical stress (σ'v) would be 21-10 = 11 kPa.
What is vertical Stress-
Vertical stress is the force applied to a layer of rock per unit area. The stress that results from the combined weight of rock and interstitial fluids above a certain depth is known as vertical stress.
To learn more about vertical stress:
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