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

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

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Soil Mechanics and Foundation
If the material of the base of the Casagrande liquid limit device on which the cup containing soil paste drops is softer than the standard hard rubber, then

The liquid limit of soil always decreases
The liquid limit of soil always increases
The liquid limit of soil may increase
The liquid limit of soil may decrease

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

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Soil Mechanics and Foundation
With the increase in the amount of compaction energy

optimum water content increases but maximum dry density decreases
both optimum water content and maximum dry density decrease[ES 93]
both optimum water content and maximum dry density increase
optimum water content decreases but maximum dry density increases

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