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EVER SEEN A RIVER OVER A RIVER?

本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.773 ?/ k$ ?% l# }6 _* A0 D# t- m

, p+ \- |; r- b& }3 wIf you are not a Physics person, read on and learn a fact of physics.   5.39.217.77( X, [0 m# R& `! d( Y
AMAZING!

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Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany  
What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
. i7 _6 w, S* P6 aTVBNOW 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。This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 9 P" S/ i0 e# ?  y$ U# K
It is located in the city of Magdeburg, near Berlin.

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The photo was taken on the day of inauguration.
3 {' N' s4 [5 D  `To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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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,
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Answer:
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It only needs to be designed to withstand the weight of  the water! tvb now,tvbnow,bttvb/ y  r. O) ^  u- u
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
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The Incredible Magdeburg Water Bridge in Germany
6 e: e" ^( r( O" o4 G5 Q% |5.39.217.77The 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.; [7 o+ G+ X8 R7 i
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. TVBNOW 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。4 e! g1 P9 r& l

  b$ Y* V. d) {: U8 B" J公仔箱論壇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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