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

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

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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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Soil Mechanics and Foundation
The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing

effective angle of shearing resistance
cohesion and effective unit weight of soil
cohesion and effective angle of shearing resistance
effective unit weight of soil and effective angle of shearing resistance

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