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Showing posts from September, 2012

River Over A River

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If you are not a Physics person, read the last paragraph and learn a fact of physics.   Have you ever seen a river over a river?  AMAZING.....    Even after you see it, it is still hard to believe! Water   Bridge in Germany . What a feat!   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.   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 t