EVER SEEN A RIVER OVER A RIVER?

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If you are not a Physics person, read on and learn a fact of physics.   7 M$ m. C  J* B$ S3 P' i, ~
AMAZING!
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Even after you see it, it is still hard to believe!tvb now,tvbnow,bttvb$ W, a3 W5 p9 \  a  N& h$ c

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& i  K3 [7 @' yMagdeburg Water Bridge in Germany  What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
4 w3 c6 [6 Y; Z* otvb 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. 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。+ V3 x# `" R! R8 q' F
It is located in the city of Magdeburg, near Berlin.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。- U# `1 K! i3 T, l/ k  D' \1 x1 O  }
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The photo was taken on the day of inauguration.
3 H( A% ^  x+ S% m/ i5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb' p3 c, g8 i  }
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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,5.39.217.76# C9 b% [! O) h/ v/ B
Or just the weight of the water?
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Answer:公仔箱論壇% ^' |9 `& u% h- `! X) @
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It only needs to be designed to withstand the weight of  the water!
$ J4 S" t  O$ `* y( ~  @& NWhy? 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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4 b2 q$ ?3 `0 u2 o1 F4 EThe Incredible Magdeburg Water Bridge in Germany
' P: m& x8 G. tTVBNOW 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。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.
6 j3 ~* N% I2 ?5.39.217.76The 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.
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, S$ N" v5 Y) Q5 x2 B8 KConstruction 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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