Safe tortion load 2X2 square tubing

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SUMMARY

The discussion centers on the structural integrity of 2"X2"X3/16" square steel tubing for a crane designed to lift a handicap scooter. The beam, measuring 36 inches, will support a static weight of 150 pounds and endure a maximum torsional moment of 500 foot-pounds at the free end. Expert Robert Kisko confirms that the specified square tubing is adequate for this application, indicating its suitability for the required load and torsion specifications.

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This discussion is beneficial for mechanical engineers, structural designers, and DIY enthusiasts involved in building lifting equipment or cranes, particularly those focusing on safe load management and material selection.

Robert Kisko
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I want to build a crane to load my handicap scooter on my pickup. In my design I need a 36 inch beam, fastened at one end, free at the other. The beam will be loaded at the free end with 150 pounds of static weight, and it will also have a maximum moment of 500 foot-pounds tortion at the free end. I would like to use square steel tubing for the beam. Will
2"X2"X3/16" tubing be adequate?

Are there tables available that list the safe tortion loads of steel tubing?
 
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Robert Kisko: Your square tube listed in post 1 appears adequate for the stated application.
 
Last edited:

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