Building Construction
The bearing capacity of a water logged soil can be improved by

Compacting the soil
Increasing the depth of foundation
Draining the soil
Grouting

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Building Construction
Negative skin friction

Neither (A) not (B)
Develops due to lowering of ground water
Both (A) and (B)
Is a downward drag acting on a pile due to downward movement of the surrounding compressible soil relative to the pile

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