What are bridges made of? I want to know how they function and regulate water coming from Dams?
818611
http://en.wikipedia.org/wiki/Bridges............ Everything and anything you wanted to know.......
946246
Helium particles are very small, in fact they are the smallest free particles that normally exist in nature. Although the plastic your balloon is made out of can stop water and sand and marbles and various other materials that have large particles, helium is small enough to go through, so it leaks.\n\nNow, there are certain kinds of balloons which are made out of special plastics and leak hardly any helium at all. However they are more expensive than the standard, cheap, leaky ones.
541363
as the name itself suggests.. it is multi-purpose..\ncan be used for a variety of purposes..some of them are :-\n \n\nGenerate Power from Water - The Infinitely renewable source of energy \nSupply Clean Water for Irrigation & Drinking \nMaintenance of Ecological Balance\npisciculture\npromotes tourism in that area (because of the artificial lake created)..\n\nexample is : -\n\nDamodar Valley Corporation - The Corporation came into existence on the 7th July, 1948 as the first multipurpose river valley project of independent India.  \n\nalso the Bhakra dam\n\nlinks are : -\n\nhttp://www.dvcindia.org/about/index.htm\n\nhttp://bhakra.nic.in/english/environment_protection.asp\n\nhttp://www.saciwaters.org/dams_report.htm
1127352
There are some basic sub-fields under "Civil Engineering" that can help explain what civil engineers do.\n\nTransportation Engineering--Railroads, Roads, Traffic, highway & transportation planning, multimodal transport, intelligent vehicles\nEnvironmental Engineering--Air, Water, Soil, Landfills, groundwater, hazardous & non-hazardous waste management, site cleanup & remediation clean water, waste water, environmental impact, pollution identification, mitigation & remediation\nWater/Wastewater--Sewer or Water Systems including pump stations and treatment plants\nStructural--Buildings, Bridges, skyscrapers, offshore structures\nGeotechnical--foundation engineering, soil & rock mechanics, slopes, retaining walls, tunnels\n\nBasically Civil Engineers design and do research on the topics above.
521934
A type of engineer who specializes in the movement and transport (both natural and man made) of water. They can do anything from build dams to city sewers or movement of other liquids besides water in a plant setting.Somebody who likes to get wet a lot. Hydrologist ia a science dealing with their properties, distribution, and circulation of water an and below the earth's surface and in the atmosphere.
808749
The Tacoma Narrows bridge was I think referred to as galloping gertie or something because it would move so drastically due to harmonic vibration caused by wind.  More recently there was a pedestrian bridge in London (England) that had harmonic movement issues due to the mass of people walking on it. THye corrected this but it cost several million dollars.  These are 2 examples of poor engineering design. Here is the link to the Tacoma Bridge collapse\n\nhttp://en.wikipedia.org/wiki/Tacoma_Narrows_Bridge#Film_and_Video_of_collapse\n\nBridges that are made of concrete have steel reinforcing rods embedded in the concrete. In certain areas chlorides from either the presence of seawater or from salt application in snowy climates can cause corrosion of the steel ultimately resulting in failure of the structure.  The chloride is mobile through the concrete and forms galvanic cells around the steel causing the steel to rust. Rusting steel takes more space than unrusted steel and the concrete breaks apart.\n\nSttel bridges require constant attention or they will corrode and fail. The Golden Gate Bridge has a permanent staff assigned to it to paint it. They go from one end to the next and ny the time they get to one end its time to start again.
269852
Bridges, mines, tunnels, dams, highways, ...
299017
glue, lots of glue. I had to build a mini-bridge out of toothpicks for a school project to see how much weight it held, and I covered it in glue and it almost won, but another kid cheated and used dow rods and he won, but by very little.
499307
Looks like you have a Wheatstone bridge. Why don't you try Wikipedia.\n\nhttp://en.wikipedia.org/wiki/Wheatstone_bridge
334381
http://www.karun3.com/technical/?item=7\nhttp://www.karun3.com/related%5Finfo/about%5Fhydro/hydropower%5Fmachinery/
349291
Most forms of electricity generation involve heating water (burning fossil fuel, solar power, etc) to form steam that turns a turbine.  The excess heat releases a large amount of wasted energy, energy not used to produce electricity.  Hydroelectric power, on the other hand, uses only moving (cool) water to push the turbine, so no heat energy is wasted and no fuel is consumed.  The main problem with hydroelectric power is that rivers end up dammed to collect enough water to move the turbines; dams alter the natural hydrology of their environment by flooding low lying areas, slowing waterflow, and impeeding animal migration.
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At the top of the Dam, the water has 100% of its energy <or if you prefer energy per second - that is power >\n\n87% of power <=> 1900 MW\n100% of power <=> 2184 MW\n\nAt the top of the Dam, the potential energy the water possesses is what can be ideally converted into 100% power.\n\nDensity of water = 1000 kgm^-3\n\nLet the mass of water be y kg\nPotential energy of water = y * 9.80 ms^-2 * 170 m \n                                         = 1666 y Joules\n\nEach second it can deliver 1666y Watt of energy\n\nThat is 1666y W <=> 2, 184, 000, 000 W\n                           y = 1310924 Kg of water each second\n\nUsing density of water, above, each second, 1311 m^3 of water must flow from the top of the dam\n\nYour answer is ultimately 1311m^3/s\n\nI just love those physics exercises, feel free to contact me. I am a student in Science subjects
687068
...And by "Hydro" you mean water? or Hydrogen?\n\nWhat type of power output do you need/want?\nHow much are you willing to spend?
661803
Because of the pressure of water is more at the bottom of the dam. Think of the tonnes of water the dam is holding at the base. \n\nHope this helps...
251822
hydro = water\nso \nelectic enery from water.\nlook up Hover Dam
770428
How about looking for pictures of bridges on the Internet, use a search engine such as "Google". Many bridge structures use triangles.  some of the new modern bridges use them quite creatively.
1097253
i'm not an engineer but i would say that there are more than one methods. i think you have to make each carrier autonomic,which means it can react as an indepenent part of the bridge in forces like wind or earthquake. i don't know if i helped, i hope i'm not beyond the subject of your question? if i'm sorry