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 is always greater 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

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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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Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same and also peak strength is same
ultimate strength is same but peak strength of dense sand is greater than that of loose sand
ultimate strength is different but peak strength is same
ultimate strength is same but peak

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Soil Mechanics and Foundation
Within the consolidation process of a saturated clay

a gradual increase in neutral pressure and a gradual decrease in effective pressure takes place and sum of the two is constant
both neutral pressure and effective pressure decrease
a gradual decrease in neutral pressure and a gradual increase in effective pressure takes place and sum of the two is constant
both neutral pressure and effective pressure increase

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