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

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

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

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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
Parallel to stratification is always greater than that perpendicular to stratification
Is always same in both directions

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