I currently have an aluminium (aluminum?) pole that's about 1"1/8 across, and it's embedded into concrete. I need this pole taller, and can acquire exactly the same spec pipe in any length to do this.
The pipe doesn't need to be directly end-to-end (there's nothing flowing through), but it should keep its position very well. There will be a slight load (~1kg) on this additional section, but not much. I cannot weld this pipe, but I can drill it or otherwise modify it.
What's my best option here? I've had three so far, and I'm not sure any are what I'm after.
- Drill and attach side 'plates' with bolts through.
- Find a pipe as near to the internal diameter as possible, and drill through the outer and inner pipes with bolts.
- Stagger the pipes, drilling and applying bolts the whole width.
Here are some quick visualisations of these:
Are there options I'm missing to do this, perhaps?
For reference, the pipe is similar to this:
Best Answer
This gets close to opinion, but I'd lean toward the internal sleeve. It can be extra long without being unsightly, which will give a bit more strength.
The external plates would probably be fine.
Unless you could overlap option 3 quite a bit (>12" is what my intuition specifies), it doesn't strike me as being as strong.