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Total Stress and Effective Stress An embankment is to be constructed rapidly over a soft clay...

Total Stress and Effective Stress

An embankment is to be constructed rapidly over a soft clay deposit. Which stage of the construction is assumed to be the most critical design condition and explain why.

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Answer #1

The most critical design condition for such type of construction on soft clay deposit is total stress condition using the value of undrained cohesion Cu obtained from undrained tests on undistiurbed samples of clay deposit and using an undrained angle of internal fricition as u  = 0

The analysis is carried in terms of total stress using the value of Cu obtianed from undrained test on undisturbed samples. Since the soil is saturated, u = 0 , and the analysisi is usually reffered to by this description.

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