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  #1  
Old 07-23-2006, 07:55 PM
melissa melissa is offline
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Default WATER BRIDGE .. OVER A RIVER!!!

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WATER BRIDGE .. OVER A RIVER!!!

Even after you see it, it is still hard to believe !

Water Bridge in Germany.... What a feat!

Six years, 500 million euros, 918 meters long.......now this is engineering!

This is a channel-bridge over the River Elbe and joins the former East and West Germany, as part of the unification project. It is located in the city of Magdeburg, near Berlin. The photo was taken on the day of inauguration. To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, or just the weight of the water?

Answer:

It only needs to be designed to withstand the weight of the water!

Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded.

Remember your high school physics, and the fly in an enclosed bottle project? Similarly, the super sensitive scale proved that it didn't make any difference whether the fly was sitting on the bottom, walking up the side, or flying around. The bottle, air, and fly were a single unit of mass and always weighed the same.
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Old 07-23-2006, 08:24 PM
motorsports_3 motorsports_3 is offline
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OMG that is so badass
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Old 07-23-2006, 09:31 PM
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The romans were building "water bridges" (aquaducts), many many centuries ago!
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Old 07-23-2006, 09:36 PM
melissa melissa is offline
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Quote:
Originally Posted by GBMINI
The romans were building "water bridges" (aquaducts), many many centuries ago!

but that was just for water... this is for ships and people on water
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Old 07-23-2006, 10:05 PM
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Three letters: W-T-F-.....................
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Old 07-24-2006, 12:29 AM
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I saw a special on this last year... I think it was an 'extreme engineering' episode. I watch those shows all the time... I think there is also a section that moves up and down somewhere if I remember correctly... I think they use locks to bring them up to that level and then back down on the other side of the river. good stuff!
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Old 07-24-2006, 12:56 AM
UKSUV UKSUV is offline
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That thing is bad ass! Crazy Germans
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Old 07-24-2006, 05:16 PM
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The question is, how do they get the water up there? Water wants to travel downhill so unless there is another water source uphill that flows through there they have to pump it somehow. Right. OK, I don't know what I'm talking about.
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Old 07-24-2006, 06:14 PM
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Thats pretty amazing...but why? That money could go towards lots of other things..like more race tracks!
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Old 07-24-2006, 06:45 PM
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Saw this on Discovery a while back on a sick day I think... So insane.
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Old 07-24-2006, 07:06 PM
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Quote:
Originally Posted by Pir8 97
The question is, how do they get the water up there? Water wants to travel downhill so unless there is another water source uphill that flows through there they have to pump it somehow. Right. OK, I don't know what I'm talking about.
that was what the biggest hurdle was I think... I believe they are actually joining a canal with the river... so the canal would be higher by it's nature (with the use of a large water basin in-line.

this google satellite map shows it during construction a few years ago:

http://maps.google.com/maps?f=q&hl=e...46177&t=h&om=1
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Old 07-25-2006, 06:15 AM
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hmm, drag boats over that bridge? street racing hydroplanes?
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