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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.
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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.
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.
Why the foundation of a building made wider?
Foundation of buildings are made wider because the area of foundation is increased to reduce the pressure exerted by walls.
Why is junction capacitance of collector to base junction is lower than base to emitter junction?
The collector base depletion zone is wider than the emitter base depletion zone.
Is the base region much thinner or wider than collector and emitter regions?
yes its thinnerMost of the free electrons that have entered the base do notrecombine with holes because the base is very thin.
Why dam pillar are wider at the base?
pillars with wider base support more load
What does the Aswan Dam Look Like?
It is a large dam on the Nile River, that looks a little bit like the Hoover Dam, though wider and not as tall.
Why are the walls of dam thickened near the base?
why are the walls of a dam thickened near the base
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.
Where is the Hoover Dam and how tall is it?
the hoover dam is in Nevada and it is 726.4 feet from the base to the road.
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!
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
How does base of support influence stability?
The wider your base of support, the steadier you are.
Why does giving an object a wider base make it more stable?
The wider base acts as an anchor and foundation. Objects that are wider at the top are "top heavy" and tend to fall over. You can't fight gravity.
Why does a dam at the end of a lake need to be wider at the bottom?
Because water pressure is greater near the surface of the water
Can a dam create an artificial base level?
Yes.
Why dams are made wider at the bottom?
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.
