Hopefully simple math question on square aluminum tubing.
After a lot of reading, I still have a question on square aluminum tubing. I need to build new safety poles. My current ones are overbuilt of steel I beams, heavy, and ugly.
The current working design is square aluminum tubing, 6-7' high depending on the person carrying it, and square plates welded flat on the ends. These will stand on one of the square plates, with the load pushing lengthwise on the other end. Basically these would be like giant jack stands.
I was thinking 4" square by 1/8" thick tubing, with an 1/8" thick by 8" plate welded on the end. The goals with this are to take a minimum of 2000 lbs (that includes a 2x safety factor) in the lightest and easiest to carry package possible. I am leaning toward the aluminum because it will require less maintenance to keep looking nice (this will be used in people's homes sometimes.)
I would happily take suggestions to reduce the weight if I'm still way overkill, but a little overkill doesn't hurt.
I have found equations to calculate the load if it was used as a crossbeam, but I don't seem to find anything on using the square tubing as a column (at least that I've understood that way.)
If anyone here can tell me if that size tubing will work, or if I need bigger or can use smaller, it would really be appreciated! Equations so I can learn a little for next time would be even better.
Hopefully this comes out like I wanted it to as an example:
[CENTER]Load
V
____
||
||
||
||
-----[/CENTER]
Thank you!!!