I had never heard of this. Engineering is amazing!
This is another modern miracle. Even the riddle is fascinating.
ABSOLUTELY INCREDIBLE
If you are not a Physics person, read the last paragraph and learn a fact of physics.
Have you ever seen a river over a river? AMAZING !!!
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 your armchair engineers
. . . and physicists.
Question:
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:
the answer will appear at the end of this email, I moved it to give you time to
think about it.
Saturday, April 23, 2011
The Incredible Magdeburg Water Bridge in Germany
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal,and allows ships to cross over the Elbe River . At 918 meters, it is the longest navigable aqueduct in the world.
The Elbe- Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe . Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo.
Construction of the water link was started as early as in the 1930's but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003.
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.
That's amazing, but does it serve a practical purpose or is it primarily a recreational channel?
I do not much like to take the tone of a moralist. But the danger of the baobabs is so little understood, and such considerable risks would be run by anyone who might get lost on an asteroid, that for once I am breaking through my reserve. "Children," I say plainly, "watch out for the baobabs!"
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River Over A River.
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