Soil Mechanics and Foundation
Coefficient of earth pressure at rest is

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

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Soil Mechanics and Foundation
A tri-axial shear test is preferred to direct shear test, because

Precise measurement of pore pressure and change in volume during test, is not possible
None of these
Stress distribution on the failure plane, is non uniform
It can be performed under all three drainage conditions with complete control

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Soil Mechanics and Foundation
The ultimate consolidation settlement of a structure resting on a 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
Increases with the decrease in the porosity of the soil

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