Why dams are made wider at the bottom?

Answer 1

Dams must hold back water of a certain depth, determined by the height of the dam. The pressure exerted by this water on the dam is dependent in part by its depth, since the base of the dam must be able to hold pressures exerted by the weight of all the water above the base. Since the pressure is greater at the base, the dam is broader at the base.

Answer 2

The pressure of the water (the weight) is greater at the bottom, due to the depth of the water. As the pressure is less near the top, the top of the dam wall doesn't need to be as thick as the bottom of the dam wall.

Answer 3

There is a lot of force behind a dam and over a buildings foundation. Buildings and dams are given wide bases to exert less pressure on a large area.

Answer 4

The engineers was responsible to do it better that what kind physical structure could been worth of it,

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Answer 5

This is because, same force acting on a smaller area exerts a larger pressure and smaller pressure on larger area. Here, buildings are given wide bases to exert less pressure on large area.

Answer 6

What will happen if there were no bacteria?and why are symbols formula valency are important in chemistry

Answer 7

The pressure exerted by water is greater at greater depths.