Soil Mechanics and Foundation
A plane inclined at an angle ‘φ’ to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as

Repose line
Natural slope line
All listed here
The φ line

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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
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

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