Aluminum square tubing strength

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SUMMARY

The discussion centers on determining the appropriate size of aluminum square tubing for constructing a cantilever "T" structure that must support 1,000 lbs. at specific points. Participants emphasize that pure aluminum is unsuitable for construction due to its softness, recommending aluminum alloys such as silumin, which offer a superior strength-to-weight ratio compared to ordinary steel. Additionally, considerations regarding operating temperature and corrosion resistance are critical when selecting materials for this project.

PREREQUISITES
  • Understanding of aluminum alloys, specifically silumin
  • Knowledge of structural engineering principles related to cantilever designs
  • Familiarity with load-bearing calculations
  • Awareness of material properties, including strength and corrosion resistance
NEXT STEPS
  • Research aluminum alloy specifications and their mechanical properties
  • Learn about cantilever beam design and load distribution
  • Investigate corrosion resistance treatments for aluminum structures
  • Explore software tools for structural analysis, such as ANSYS or SolidWorks
USEFUL FOR

This discussion is beneficial for structural engineers, architects, and DIY builders interested in lightweight construction materials and the application of aluminum alloys in load-bearing structures.

waynecarstairs
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I am wondering if anyone would be so kind as to help me with a project. I am wondering what size aluminum square tubing it would take to build a "T" with the horizontal top being 4 feet in length and being able to hold 250 lbs. at each end and 1 ft. in from each end, totalling 1,000 lbs. I know what size tubing I need in steel but I would like to make the structure lighter and am not familiar with the strength of aluminum for such a cantilever. Just trying to see if aluminum is a viable option. Thanks, Bruce
 
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Pure aluminium is too soft for construction purposes.
Many common alloys (ie silumin) has better strength/weight ratio, than ordinary steel.
But are more expensive.
Should also pay attention for the operating temperature and corrosion factors.
 
waynecarstairs said:
... Just trying to see if aluminum is a viable option. Thanks, Bruce

It might, but you've left out too much information.
 

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