Wow! From: Gail Ellison Sent: Wednesday, June 29, 2011 12:54 PM To: Ruth Ryals Subject: Re: River over a river Thought you and Jim might enjoy this, if you haven't seen photos. . . cid:5C4A0DCF7C1B441CB3FF7764744432F5@louginPC 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: 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 . . . .
Saturday, April 23, 2011 <http://www.amusingplanet.com/2011/04/incredible-magdeburg-water-bridge-in.h tml> 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. magdeburg-water-bridge6 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. magdeburg-water-bridge6 magdeburg-water-bridge3 magdeburg-water-bridge4 magdeburg-water-bridge5 magdeburg-water-bridge2
This is wonderful stuff. Thanks. Alice From: neighbors-bounces+amjweiss=alum.barnard.edu@buenavistasocialclub.org [mailto:neighbors-bounces+amjweiss=alum.barnard.edu@buenavistasocialclub.org ] On Behalf Of Ruth Ryals Sent: Wednesday, June 29, 2011 12:58 PM To: Neighbors@buenavistasocialclub.org Subject: [Neighbors] FW: River over a river Wow! From: Gail Ellison Sent: Wednesday, June 29, 2011 12:54 PM To: Ruth Ryals Subject: Re: River over a river Thought you and Jim might enjoy this, if you haven't seen photos. . . cid:5C4A0DCF7C1B441CB3FF7764744432F5@louginPC 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: 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 . . . .
Saturday, April 23, 2011 <http://www.amusingplanet.com/2011/04/incredible-magdeburg-water-bridge-in.h tml> 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. magdeburg-water-bridge6 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. magdeburg-water-bridge6 magdeburg-water-bridge3 magdeburg-water-bridge4 magdeburg-water-bridge5 magdeburg-water-bridge2
Eiffel did it too, over the Loire in France. On Jun 29, 2011, at 1:38 PM, Alice Weiss wrote:
This is wonderful stuff. Thanks. Alice
From: neighbors-bounces+amjweiss=alum.barnard.edu@buenavistasocialclub.org [mailto:neighbors-bounces+amjweiss=alum.barnard.edu@buenavistasocialclub.org] On Behalf Of Ruth Ryals Sent: Wednesday, June 29, 2011 12:58 PM To: Neighbors@buenavistasocialclub.org Subject: [Neighbors] FW: River over a river
Wow!
From: Gail Ellison Sent: Wednesday, June 29, 2011 12:54 PM To: Ruth Ryals Subject: Re: River over a river
Thought you and Jim might enjoy this, if you haven't seen photos. . .
<image001.jpg>
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:
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 . . . .
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. <image002.jpg> 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. <image003.jpg> <image004.jpg> <image005.jpg> <image006.jpg> <image007.jpg>
_______________________________________________ Neighbors mailing list Neighbors@buenavistasocialclub.org http://mailman.actwin.com/mailman/listinfo/neighbors
participants (3)
-
Alice Weiss -
Ruth Ryals -
Stephen C. Perry