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What is increased in a dam by raising the water level?
Water pressure on the dam.
The depth of water behind the Hoover Dam in Nevada is 220 m what is the water pressue at the base of this dam?
water pressure at the base of the dam is (specific weight of water * depth)2158.2KN/m2
What is hydraulic height as it relates to a dam?
The pressure that water exerts on the walls of the dam is proportional to the depth of the water or you might say the height of the column of water from the base of the dam. The hydraulic height is the same as the depth of the water to the bottom of the 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!
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.
What is the purpose of a dam and how does it affect your life?
A dam is a large piece of concrete that has water behind it that holds water for drinking and for other purposes.
What might affect the flow of the water in a river?
A dam or weir
What causes the turbine of a hydro-electric dam to turn?
Water pressure.
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.
Why do dams have a very broad base?
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.
Abnormal load on an earth dam is?
The abnormal load on the earth dam is the water pressure on the upstream side.Loads acting on dams are hydrostatic pressure, self weight, seismic loads.
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.
