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Why are dams over rivers more broad in the bottom than on the top?
Wiki User
∙ 11y ago
Because - the deeper you go into water - the higher the pressure. The base of the dam not only has to support the whole structure, but also the weight of thousands of tons of water being held back.
Wiki User
∙ 11y ago
Wiki User
∙ 10y agoPressure increases the deeper you are, so I guess it's as you need thicker walls at the base to support the structure from the high pressure, and thinner at the top due to not as much pressure.
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