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Tacoma Narrows Bridge Collapse Of 1940


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Posted
  • Location: Irlam
  • Location: Irlam

    Here's some film footage of the Tacoma Narrows Bridge collapse in Washington state, USA. Nicknamed "Galloping Gertie", it was a spectacular engineering failure. On the 7th of November 1940, winds of 42mph, sent the main span into torsional oscillations which increased in amplitude until the main span collapsed.

    The main bridge span exhibitied great flexibility in the 4 months it was opened to traffic before the collapse and this what gained its nickname "Galloping Gertie".

    The bridge collapse marked a turning point in engineering and aerodynamics that were not understood at the time.

    http://physics.kenyon.edu/coolphys/Frankli...ted/tacoma.html

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    Guest Sir Seany

    What a cock up that was, poor dog! I think its good that only a dog died because that means we can laugh at how funny it moved! The angles it got to was incredicble, and it looks more like its made out of liquorice than girders!

    At my old school, there were two buildings, adn a bridge went over a main road connecting the two sites, that didnt half sway sometimes, not as bad as tacoma, but in a gales force wind it would have come down quite merry onto unsuspecting drivers! I remember that when there was no people on it, you could jump up and down and it would move B) that wasnt even a suspension bridge, might i add!!!

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    Posted
  • Location: Irlam
  • Location: Irlam

    Can't believe how narrow that first Tacoma bridge was, only 39ft or 11.8m and that includes roadway and pavement on either side! <_< A cricket pitch is 22 yards long, wicket to wicket, meaning the bridge was justover half a cricket pitch in length!!! :o :o

    Edited by Mr_Data
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    • 2 years later...
    Posted
  • Location: Irlam
  • Location: Irlam

    I don't know why but since I was a young lad, watching footage of this bridge's collapse has always fascinated me. :lol:

    http://www.youtube.com/watch?v=HxTZ446tbzE

    http://www.youtube.com/watch?v=P0Fi1VcbpAI

    http://www.youtube.com/watch?v=gHgQALH9-7M

    Edited by Mr_Data
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