Soil Mechanics and Foundation
Coefficient of earth pressure at rest is

less than both the active and passive earth pressures
less than active earth pressure but greater than passive earth pressure
greater than both the active earth pressure and passive earth pressure
greater than active earth pressure but less than passive earth pressure

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

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

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Soil Mechanics and Foundation
Effective stress on soil

Decreases voids ratio and increases permeability
Increases both voids ratio and permeability
Increases voids ratio and decreases permeability
Decreases both voids ratio and permeability

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