Materials - .Thegirdersusedto .,oropen channels,'stowers Whensteelisdrawn(stretched)intowires,;c

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Many of the components of a suspension bridge are made of steel. The girders used to  make the deck rigid are one example. Steel is also used for the saddles, or open  channels, on which the cables rest atop a suspension bridge's towers. When steel is drawn (stretched) into wires, its strength increases; consequently, a  relatively flexible bundle of steel wires is stronger than a solid steel bar of the same  diameter. This is the reason steel cable is used to support suspension bridges. For the  Akashi Kaikyo Bridge, a new low-alloy steel strengthened with silicon was developed; its  tensile strength (resistance against pulling forces) is 12% greater than any previous steel  wire formulation. On some suspension bridges, the steel wires forming the cables have  been galvanized (coated with zinc). The towers of most suspension bridges are made of steel, although a few have been built 
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This note was uploaded on 04/27/2011 for the course CIVIL ENGI 399 taught by Professor Schaus during the Spring '11 term at Purdue University-West Lafayette.

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Materials - .Thegirdersusedto .,oropen channels,'stowers Whensteelisdrawn(stretched)intowires,;c

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