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Soil Mechanics - Effective and Total Stress
Effective Stress,
is in units of pressure (Pa,
,
, etc) and is given by this equation:
Total stress, , is the total amount of stress due to the soil at the depth you are considering:
is the soil density (e.g. 80 lb/ft^3).
is the acceleration of gravity (e.g. 32.2 ft/s^2).
is the distance of the surface, or beginning of the soil section, to the point you are considering(e.g. 10 ft).