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Thread: Structural Engineer?

  1. #1
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    Structural Engineer?

    Nothing to do with landrovers ...I have been pulling my hair out for hours trying to find the minium I beem I can use to span 8.8 meters no or minimul deflection at centre with a load of hav'nt a clue but its a floor in the shed but its only going to be light storage up there with a form ply floor
    better add this bit supported at the ends only dont want any posts in the middle of the shed
    any thoughts ....

    Ok Abit more info the load would be about 4.0kN/m2 or 100lbs per square foot that according to the interweb would be about avarge for a office/light storage area.



    Tony
    Last edited by tony; 13th May 2010 at 03:06 PM. Reason: missed a bit, and a bit more

  2. #2
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    I would use a small section hopleys truss - cheap & strong

    (see your local friendly tame steel merchant)

    for example: http://www.tankindustries.com.au/ima...t-Brochure.pdf

  3. #3
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    How wide is the floor in the other (transverse) direction?

    Will there be more than one of these beams spaced along the other direction of the floor?

    Will people be walking on the floor?

    Beams like described fail by buckling with the top flange (which is in compression) bending to the side and down. Adding lateral restraints to resist the sideways movement of the top flange will dramatically reduce the required section size. You will most likely need members to support the flooring in the transverse direction that can serve as lateral restraints.

    You won't get no deflection - the code sets allowable deflection.

  4. #4
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    I think a quick sketch of what you are trying to do might help.

    and are you using wood or steel for the shed extension?

    Steve

  5. #5
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  6. #6
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    OK help I have done a u bute little drawing but how do I get it in a post..I have tried to upload it to web shots but its a word file and webshots wont accept it me being a compleat neanderthol with computers I thought I was doing well with the drawing


    Oh an the floor will be steel with a form work floor
    T

  7. #7
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    Tony you could go in to the document click "save as" and save it as a PDF.

    then come back in here post a reply and click manage attachments (half way down) and load the PDF straight to your post as an attachment.

    failing that a screen shot and save as a Jpeg..

    Or failing that again send your drawing to me and I will get it up for you
    Our Land Rover does not leak oil! it just marks its territory.......




  8. #8
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    Tar Lue

    Hope this works

    T
    Attached Files Attached Files

  9. #9
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    yep works fine
    Our Land Rover does not leak oil! it just marks its territory.......




  10. #10
    BAILEY Guest
    Hi Tony, so looks like your making more space to fit the camper trailer.

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