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Aluminum sq tube limits

  1. Jul 6, 2010 #1
    Hi -

    I hope this is the correct forum for this question...

    I'm building a camera jib arm - essentially a 1.5" sq aluminum tube, 15' long, with a pivot point in the "middle". A camera goes on one end, and counter weights on the other. I'd like to know the limits of the aluminum so it doesn't eventually bend or break.

    the tubing is 3/16" wall, 1.5" OD - and the total weight of camera, counterweight and the tubes themselves is about 45 pounds.

    Can someone direct me to stress and/or load charts for aluminum sq tubing?

    When assembled, the tubing has a slight downward bow. I just want to know how close it is to breaking.

  2. jcsd
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