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Chapter 13

Chapter 13. “The Ups And Downs Of Bridges”. Juan Navarro Ezri Navarro Ruben Contreras Luis Quintana. Q=“What thing is it, the less it is the more it is dread?”. Lighter Structures. A= Bridge. Eads Bridge and Brooklyn Bridge.

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Chapter 13

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  1. Chapter 13 “The Ups And Downs Of Bridges” Juan Navarro Ezri Navarro Ruben Contreras Luis Quintana

  2. Q=“What thing is it, the less it is the more it is dread?” • Lighter Structures A= Bridge

  3. Eads Bridge and Brooklyn Bridge • Involved simultaneous leaps of engineering which could have led to failure. • Early advances of steel and pneumatic caisson technologies. • Defied Murphy's law.

  4. Eads Bridge and Brooklyn Bridge setbacks • Elephant crossing • Inferior material • Deaths • Bad publicity

  5. Visionaries • John Augustus Roebling (1806-1869): German born engineer who designed many bridges including Waco suspension bridge, Brooklyn bridge. • James Eads (1820-1887): Named after his cousin James Buchanan who became president of the United States. Creator of the Diving Bell used to salvage ship wrecks.

  6. Bridge failures • Tacoma Narrows bridge gave invaluable. information on the behavior of wind loads, 1940. • Airplane wing effect. • Theodore von Kármán(director of Daniel Guggenheim Aeronautical Laboratory). • Wheeling Suspension Bridge 1849. • Thomas Telford’s Menai Straits Bridge 1826.

  7. Inspiring • David Steinman • Mackinac Bridge • Severn Bridge • Innovation for new designs

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