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Why is the base of a dam thinner then the wall?
The pressure against the dam wall increases at the lower levels than nearer the surface. So I expect the foot of the dam wall to be thicker at the bottom than at the top.
Why the base of the dam is made wider?
The pressure of the water against the top of the dam wall, is much less than the pressure exerted against the bottom of the dam wall. The width of a dam wall increases to compensate for the increased water pressures at the lower level.
Why are dams over rivers are made broader at bottom than at the top?
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.
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 are the walls of a dam made thick at the bottom and thin upward?
The deeper the depth, the greater is the pressure the weight of water puts on the dam wall.
Why A dam has broader world at the bottom than at the top?
Due to the that the pressure exerted by a liquid increase with its depth. Thus as depth increase, more and more pressure is exert by water on the wall of dam. A thick wall is required to withstand a great pressure, therefore, the wall of the dam is made with thickness increasing towards the base
How thick is the hoover dams wall?
At the top the dam in 45 feet thick, and 660 feet thick at the bottom.
What do you call a wall that holds back water?
A wall that holds back water is a dike, levee or dam
Why do you find a reservoir near a dam?
The dam is the wall or structure that holds back fresh water. The reservoir is the whole structure, which includes the dam wall and stored water.
What is a wall barrier that is natural?
A Dam
Is pressure lower at the bottom of a dam?
Density of water per unit volume ie. g/cm3 * depth of water (cm). Answer will be in g/sq cm. Density of water is approximately 1g / cm3 therefore pressure at the bottom of a dam wall with 1m of water = 0.1kg / sq cm. Note: this is only valid at the bottom of the wall, half way up the 1m of water the pressure would be 0.05kg / sq cm. At the very surface of the water, there would be no pressure. Thats why a finger in a dyke (dike) can hold back the North Sea!
What is an dam?
A dam is way to control floods by putting a large wall across a river
