Soil Mechanics and Foundation
The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively

1.0 kg/cm² and 0.5 kg/cm²
zero and zero
0.5 kg/cm² and 0.5 kg/cm²
0.5 kg/cm² and zero

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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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