trestle design help please

Discussion in 'FAQs' started by fran1942, Jul 28, 2005.

  1. fran1942

    fran1942 Member

    Hello, I found this pic on the net.
    It shows the rails on this trestle, laid down over normal sleepers. They in turn appear to be sitting on an additional wider sleeper bed.
    Is this what I am seeing ?
    Normally the rails sit on sleepers, which then sit on stringers attached to the trestle bents. End of story.
    This pic appears to have an additional layer of wider sleepers ?
    Thank you for any confirmation.

    Attached Files:

  2. shaygetz

    shaygetz Active Member

    It looks like standard practice. On top of the posts, you have caps, usually 12"x15" timbers 15' long. Perpendicular to the caps are stringers, usually 6"x18"timbers laid vertically three apeice directly under each rail spanning from one bent to another. Then you have the ties (sleepers ;) ) running perpendicular to the stringers. They are 9"x9", 11 feet long and spaced slightly closer than regular roadbed. It looks like it's finished with 9"x9" guard timbers set just in from the edge the length of the trestle. Hope that helps :thumb:

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