Civil Engineering MCQAE Level Civil Engineering
For upward flow below a hydraulic structure, which of the following rules or methods is correct?
Soil MechanicsSeepage ForceMEDIUM
Choose the correct answer
A
upward seepage increases submerged unit weight always
B
seepage force acts only in dry sand
C
upward seepage reduces effective stress
D
pore pressure is unaffected by flow
Correct Answer
C. upward seepage reduces effective stress
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Seepage pressure changes effective stress and can cause boiling. Correct option: C.
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