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Because the water pressure at the bottom of the dam is much more than the top.

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11y ago

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Why are dams made thinner at the bottom?

This is because the pressure in a liquid increases with depth. This means that the pressure at the bottom of the dam is more. Hence it is more liable to break out from the dam as more pressure is exerted on the walls. So, the walls are thicker at the bottom.


Why do dams need to be thicker on the bottom and thiner at the top?

because the water pressure on the damn is much higher on the bottom of it than the top.


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