Which one of the following is not a disadvantage due to a Buttress dam?

Fluid Mechanics and Hydraulic Machines Mcqs

A.The structure being self-sealing, it is not sensitive to accidental rise in water level above the designed full supply level
B.Bearing stress of the foundtions are higher
C.Problems arising out of large number of joints in the dam
D.Significance of volume changes of thin members
E.Overflow arrangements

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