Soil Mechanics and Foundation
The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in

the method of taking observations
the method of preparation of soil suspension
the principle of test
All of these

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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
Is always same in both directions
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

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