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Bridge Building 101

Bridge Building 101. Presented by KEEN. Day-to-Day Lives. Engineering touches every aspect of our lives. Roads you drive Bridges and overpasses. Transportation Cabinet. Design Roads Design bridges Traffic Construction Maintenance. A Balancing Act. Support its own weight.

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Bridge Building 101

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  1. Bridge Building 101 Presented by KEEN

  2. Day-to-Day Lives • Engineering touches every aspect of our lives. • Roads you drive • Bridges and overpasses

  3. Transportation Cabinet • Design Roads • Design bridges • Traffic • Construction • Maintenance

  4. A Balancing Act • Support its own weight. • All forces must be in balance or bridge will fall. • Two major forces act on the parts of the bridge. • Compression – pushes on or squeezes bridge parts. • Tension – pulls on or stretches bridge parts.

  5. Types of Bridges • Suspension • Cable-Stayed • Truss • Steel I-Beam • Concrete I-Beam • Covered • RCDG Bridge

  6. Suspension Bridge • A bridge with overhead cables supporting its roadway. • One of the oldest of engineering forms, suspension bridges were constructed by primitive peoples using vines for cables and mounting the roadway directly on the cables.

  7. Suspension Bridge • Golden Gate Bridge, San Francisco

  8. Suspension Bridge • George Washington Bridge over the Hudson River.

  9. Suspension Bridge • Suspension bridge across the Ohio River at South Shore, KY.

  10. Suspension Bridge • Maysville, KY

  11. Suspension Bridge • Bridge Anchor

  12. Cable-Stayed Bridge • Follows the cantilever method • The tower is built, one cable and a section of the deck are constructed in each direction. • The process is repeated until the deck section meet in the middle where they are connected. • The ends are anchored at the abutments.

  13. Cable-Stayed Bridge

  14. Cable-Stayed Bridge • Cable-Stayed bridge across the Ohio River at Maysville, KY.

  15. Cable-Stayed Bridge • View looking North at KY Tower.

  16. Cable-Stayed Bridge • Stay Pipe Anchor – Ready for Deck pour.

  17. Cable-Stayed Bridge • Stay Anchors looking South.

  18. Cable-Stayed Bridge • South face of KY Tower.

  19. Cable-Stayed Bridge • Final 120’ span – Looking North.

  20. Truss Bridge • A Truss is a structural member usually fabricated from straight pieces of metal or timber to form a series of triangles lying in a single plane. (A triangle cannot be distorted by stress)

  21. Truss Bridge • Astoria Bridge over the Columbia River, Oregon.

  22. Truss Bridge • 13th Street Bridge over Ohio River at Ashland, KY.

  23. Steel I-Beam Bridge • KY 32 Bridge over Little Sandy River in Elliott Co.

  24. Steel I-Beam Bridge

  25. Concrete I-Beam Bridge • Bridge in Fleming County.

  26. Concrete Box Beam Bridge • Hancock County

  27. Concrete Box Beam Bridge

  28. Covered Bridge • A timber-truss structure carrying a roadway over a river or other obstacle, popular in folklore and art but also of major significance in engineering history. • The function of the roof and siding, which in most covered bridges create an almost complete enclosure, is to protect the wooden structural members from the weather.

  29. Covered Bridge • Covered Bridge, Mount Union, PA.

  30. Covered Bridge • Goddard Covered Bridge, Fleming Co.

  31. RCDG Bridge • Fleming County

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