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Bridges - College Essays

Bridges

REASEARCH PAPER have been around sense the beginning of time. The Ancient Roman engineers used two significant innovations, the cofferdam and cement. The cofferdam is when the put wooden spikes in to the bottom of the river then used watertight clay over the spikes to make a bridge. Now today there are more efficient ways to make a bridge then just out of cement and clay. There are Suspension , Arch , Covered and many more. Suspension have become a very common method of bridge construction in the last century. For example the Brooklyn Bridge, George Washington Bridge, Golden Gate Bridge and the Verrazano-Narrows Bridge. These all use the conventional suspension bridge design were large ...

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with a center span of 1990 meters. When completed, it will be the longest bridge of its type in the world, surpassing the Number Bridge in the UK, which has a center span of 1410 meters. The bridge has a wind-proof and earthquake-resident construction, withstanding winds up to 80 meters per second and earthquakes reaching from 8.5 on the Richter scale. This bridge is due to be completed in spring of 1999. There is a suspension bridge which spans the Seine estuary in Normandy, France. The decks of the bridge are designed as special curves so that wind flows across them as easily as over a plane. The bridge has a central span of 2,800 feet. The span is so long that it has been built with a slight upward curve from end to end, to accommodate the effects of the curvature of the Earth. There are also huge cables that have to suspend the bridge in the air. If a bubble collides with another bubble, the result always ends up in a sharing unison. Regardless of there size, no matter what, ...

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Bridges. (2005, August 16). Retrieved December 1, 2024, from http://www.essayworld.com/essays/Bridges/31785

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PAPER DETAILS

Added: 8/16/2005 08:24:05 PM
Category: Miscellaneous
Type: Premium Paper
Words: 506
Pages: 2

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