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
The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

None of these
Vertical if the soil is in a passive state of plastic equilibrium
Inclined at 45° to the vertical plane
Vertical if the soil is in an active state of plastic equilibrium

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Soil Mechanics and Foundation
The ultimate consolidation settlement of a structure resting on a soil

Increases with the decrease in the porosity of the soil
Increases with the increase in the initial voids ratio
Decreases with the increase in the initial voids ratio
Decreases with the decrease in the plastic limit

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