Aluminum Sq Tube Limits for Camera Jib Arm: Stress & Load Charts

AI Thread Summary
When constructing a camera jib arm using a 1.5" square aluminum tube with a 3/16" wall thickness, it's crucial to understand the stress limits to prevent bending or breaking. The total weight supported by the arm is approximately 45 pounds, including the camera and counterweights. Users are advised to consult online resources for stress and load charts specific to aluminum square tubing. The slight downward bow observed in the assembled structure indicates potential stress, warranting careful evaluation. Proper load calculations and material specifications are essential for ensuring safety and functionality.
Robert bobson
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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.

thanks!
 
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There are many online sources. Search for "aluminum square tube tables"
 
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