Soil Mechanics and Foundation
Bishop’s method of stability analysis

All of these
assumes the slip surface as an arc of a circle
is more conservative
neglects the effect of forces acting on the sides of the slices

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Soil Mechanics and Foundation
In a deposit of normally consolidated clay

effective stress and water content increase with depth but undrained strength decreases with depth
effective stress increases with depth but water content of soil and un-drained strength decrease with depth
effective stress and undrained strength increase with depth but water content decreases with depth
effective stress, water content and undrained strength decrease with depth

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Soil Mechanics and Foundation
In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as

consolidated undrained test
unconsolidated drained test
consolidated drained test
unconsolidated undrained test

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Soil Mechanics and Foundation
If the water table rises upto ground surface, then the

effective stress is reduced due to decrease in total stress only but pore water pressure does not change
effective stress is reduced due to increase in pore water pressure only but total stress does not change
total stress is increased due to decrease in pore water pressure but effective stress does not change
total stress is reduced due to increase in pore water pressure only but effective stress does not change

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