Engineering :: Fluid Mechanics and Hydraulic Machines

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

[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

Answer: Option A