EVER SEEN A RIVER OVER A RIVER?

lilitan008

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If you are not a Physics person, read on and learn a fact of physics.   0 {6 ?$ M7 h% s, n& D
AMAZING!
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Even after you see it, it is still hard to believe!公仔箱論壇* `/ U0 E2 t  V( ?

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Magdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
: F& z$ I3 s" ]+ mtvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
, c* A" j* {9 iTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。It is located in the city of Magdeburg, near Berlin.
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* u. l: l9 h* _) Z- O8 ^, Ctvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.5.39.217.763 {$ O' V, ~" z, W- s5 I5 t
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.* k# n' `" S0 u5 g
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Question:
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,- T, ?" n2 s+ u( O5 `
Or just the weight of the water?
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6 |" S$ F6 K# j# `- n% r  c5.39.217.76It only needs to be designed to withstand the weight of  the water!
) O8 Z$ d" B9 c3 t% Q1 I公仔箱論壇Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2 V( G9 |* \( l" W

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5 n1 b5 b" p% N  n" [9 FThe Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb, |, Q! j: ?+ l; j5 y9 I0 l
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." c4 w: T# ~6 c0 {) J
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. 公仔箱論壇$ R' Q7 B# T: d+ o7 l& u* ~1 s% R
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Construction of the water link was started as early as in the 1930s 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.
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