這是［慈德四村與后里新村］部落格

Have you ever seen a river over a river?AMAZING....
你見過一條河流過另一條河嗎？ 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
engineersand 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:
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.
More . . . .
即使你看到它，它仍然是很難相信！
水橋在德國。什麼的壯舉！
六年來，500萬歐元，918米長。 。 。現在這是工程！
這是一個通道橋在易北河和加入前東德和西德，
由於部分項目的統一。它位於城市馬格德堡附近的柏林。
該照片攝於當天的就職典禮。 。 。
對於那些誰欣賞工程項目，
這裡有一個難題的工程師為您的扶手椅
。 。 。和物理學家。
問題：難道是橋樑設計必須承受額外的重量船舶和駁船運輸，
或者僅僅是重量的水？
答：它只需要設計承受重量的水！
為什麼呢？
船舶總金額取代水的重量一樣的船，
無論怎樣嚴重的船舶可裝載。
更多。 。 。 。
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
易北河 - 哈維爾運河和Mittelland此前
會見了馬格德堡附近，但對立雙方的易北河。
兩者之間的船舶移動不得不作出一個 12公里長的彎路，
降從 Mittelland運河船隻通過 Rothensee電梯到易北河，
然後順流河上，在進入易北河 -
哈維爾運河通過 Niegripp鎖。
低水位在易北河往往使運河駁船滿載作出這條通道，
需要耗時卸貨物