Soil Mechanics and Foundation
Rise of water table above the ground surface causes

Equal decrease in pore water pressure and total stress
Equal increase in pore water pressure and total stress
Decrease in pore water pressure but increase in total stress
Increase in pore water pressure but decrease in total stress

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Soil Mechanics and Foundation
Coefficient of compressibility is

different for different types of soils but same for a soil under different states of consolidation
independent of type of soil but depends on the stress history of soil
different for different types of soils and also different for a soil under different states of consolidation
constant for any type of soil

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Soil Mechanics and Foundation
The average coefficient of permeability of natural deposits

Parallel to stratification is always greater than that perpendicular to stratification
Parallel to stratification is always less than that perpendicular to stratification
Is always same in both directions
Parallel to stratification may or may not be greater than that perpendicular to stratification

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