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2015-08-16T11:52:30+05:30

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As we go deeper in the water the force and pressure increases and if the dams will not be broader at the bottom then the dam will be destroy or crack due to heavy force and pressure. That's why the dams over rivers made broader at the bottom than at the top.
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2015-08-16T13:35:35+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
As we reach deeper and deeper into the sea the pressure on the walls of the dam increases hence the walls are made more broader oat bottom to bear more pressure
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