Soil Mechanics and Foundation
Terzaghi’s theory of one dimensional consolidation assumes

Soil is homogeneous and fully saturated
Deformation of the soil, is entirely due to change in volume
Water and soil particles are incompressible
All listed here

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Soil Mechanics and Foundation
If the water table rises upto ground surface, then the

effective stress is reduced due to decrease in total stress only but pore water pressure does not change
total stress is increased due to decrease in pore water pressure but effective stress does not change
effective stress is reduced due to increase in pore water pressure only but total stress does not change
total stress is reduced due to increase in pore water pressure only but effective stress does not change

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