Bridge suggestion needed

Discussion in 'Scratchin' & Bashin'' started by screwysquirrel, Sep 7, 2003.

  1. Joepomp

    Joepomp Member

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    Side # 2

    Here is side #2 this is a 70' through plate girder bridge.
    I usde Modle RR Bridges & Trestles as a referance. I drew the parts in Auto Cad to full scale then printed then at 1/87 for HO.
    I am starting on the flooring next.
  2. Joepomp

    Joepomp Member

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    Missing pic?

    :mad:
    Ill try to attach the PIc again!:eek: :mad: :eek: :confused:

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  3. Ray Marinaccio

    Ray Marinaccio Active Member

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    Nice job Joe.
    I like your bridge and the method used to build it.
  4. cidchase

    cidchase Active Member

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    Hi ss,
    I believe that Ray has the right idea for making a "curved bridge"
    You must use a straight section wide enough to support the curved track. If using multiple curved sections joined at an angle, my understanding is that you must support each joint with a pier, bent, or buttress. See Gary Pfeil's pix for example. Otherwise the curvature and weight cause a twisting force or moment to be applied to the abutment attachments. This contributes to a loss of structural integrity, possibly resulting in the well-known LUDIR syndrome.*:mad:

    Of course, if you don't expect a visit from the Proto Police, just build it however u think looks good (and holds up your heaviest loco)!! :D :D

    *locomotive upside down in ravine
  5. MasonJar

    MasonJar It's not rocket surgery

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    No coincidence that it rhymes with "oh dear"?! That's another entry for the "Gaugespeak" dictionary I think!

    Andrew
  6. screwysquirrel

    screwysquirrel Member

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    Well, my curved bridge is just 1 'segment' long with both ends already supported, the 'bridge' needs to be for show only.
  7. Joepomp

    Joepomp Member

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    The bridge with new camera

    Santa came early. Here is a better picture of the bridge I built from carboard and Plastruct angles.
    :wave:
  8. Joepomp

    Joepomp Member

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    Again!

    Ill try again.:oops:

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  9. Chris333

    Chris333 Member

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  10. jimmybeersa

    jimmybeersa Member

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    Proto Practice

    Here is how the CP handled the problem Thats my Grandson and I on the curve

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  11. jimmybeersa

    jimmybeersa Member

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    Another shot

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  12. jimmybeersa

    jimmybeersa Member

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    From below

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