What are the two main causes of failure of hydraulic structure on the pervious foundation?

A Seepage and Over-turning
B Undermining and Uplift
C Over-turning and Piping
D Overturning and Uplift

Correct Answer: Undermining and Uplift

Whenever a hydraulic structure is founded on a pervious foundation, it is subjected to seepage of water beneath the structure in addition to all other forces. The water seeping below endangers the stability of the structure and may cause its failure either by Piping or Undermining and Direct uplift.
Bissoy MCQ
#Irrigation Engineering #Seepage Theories #Failure of Hydraulic Structure

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