Soil Mechanics and Foundation
Which of the following methods is best suited for determination of permeability of coarse-grained soils ?

both the above
constant head method
None of these
falling head method

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Soil Mechanics and Foundation
Coefficient of compressibility is

different for different types of soils and also different for a soil under different states of consolidation
independent of type of soil but depends on the stress history of soil
constant for any type of soil
different for different types of soils but same for a soil under different states of consolidation

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

both neutral pressure and effective pressure decrease
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

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