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BRIDGES

BRIDGES. Brielle . Beam Bridge. A beam bridge is a type of bridge that uses two bases that both ends of the bridge sits on. The beam bridge is horozantal and is made of large box steel girders. . Arch Bridge. An arch bridge uses the arch to push its weight to either side of its base. .

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BRIDGES

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  1. BRIDGES Brielle

  2. Beam Bridge • A beam bridge is a type of bridge that uses two bases that both ends of the bridge sits on. The beam bridge is horozantal and is made of large box steel girders.

  3. Arch Bridge • An arch bridge uses the arch to push its weight to either side of its base.

  4. Suspension Bridge • Suspension bridges use cables that hang off caissons. Caissons are like large beams stuck deep into the floor of a lake or river.

  5. Truss Bridge • Truss bridges have a solid deck and a lattuss of beams.

  6. Cable- Stayed Bridge • Similar to suspension bridges but are more efficient

  7. TIME LINE- Event # 1 • Pre-history • Nature made simple beam bridges- example of that is a log that falls over a river

  8. TIME LINE- Event # 2 • 19 B.C. • The romans built this bridge.

  9. TIME LINE- Event # 3 • About 100 A.D. • Cantilever bridges were built in China and Tibet out of timber.

  10. TIME LINE- Event # 4 • 200 A.D. (est.) • The Europeans made arch bridges.

  11. TIME LINE- Event # 5 • 1779 A.D. • The worlds first iron bridge was built in England

  12. TIME LINE- Event # 6 • 1870’s • Steel bridges became popular due to the price of steel falling.

  13. TIME LINE- Event # 7 • 1883 A.D. • The Brooklyn Bridge was finished.

  14. TIME LINE- Event # 8 • 1884A.D • Alexandre Gustave Eiffel built a great steel arch bridge that let wind through it, over coming many structula problems.

  15. TIME LINE- Event # 9 • 1890 A.D. • a cantilever bridge was completed. It was designed by Benjamin Baker.

  16. TIME LINE- Event # 10 • 1950's A.D. • A new type of girder called a box-girder was introduced, it made longer spanning bridges possible. It allows air to pass harmlessly around the structure.

  17. Brooklyn Bridge

  18. Golden Gate Bridge

  19. Akashi-kaikyo bridge • (longest bridge- it is in japan)

  20. Salginatobel bridge in the swiss alps

  21. A log bridge french alps near vallorcine

  22. LINKS • Information- • http://en.wikipedia.org/wiki/Bridge#History • http://library.thinkquest.org/J002223/types/types.html • http://library.thinkquest.org/J002223/history/pre1700.html • http://library.thinkquest.org/J002223/history/1800to1900.html • http://library.thinkquest.org/J002223/history/1700to1800.html • Pictures- • http://upload.wikimedia.org/wikipedia/en/c/c 2/Small_footbridge.jpg • http://en.wikipedia.org/wiki/File:Bridge-suspension-nonsimple.svg • http://en.wikipedia.org/wiki/File:Nagasaki_Meganebashi_M5257.jpg • http://en.wikipedia.org/wiki/File:LittleManateeRiver.jpg • http://upload.wikimedia.org/wikipedia/en/e/e2/On_the_Sutong_Bridge_2.jpg

  23. Links cont. • Pictures cont. • http://en.wikipedia.org/wiki/File:Vallorcine_footpath_bridge_2003-12-13.jpg • http://en.wikipedia.org/wiki/File:Salginatobelbruecke_suedost_unten.jpg • http://en.wikipedia.org/wiki/File:Akashi-kaikyo_bridge3.jpg • http://en.wikipedia.org/wiki/Golden_Gate_Bridge • http://en.wikipedia.org/wiki/File:Brooklyn_Bridge_20080501.JPG

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