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Old July 31st 20, 11:03 PM posted to rec.crafts.metalworking
Jim Wilkins[_2_] Jim Wilkins[_2_] is offline
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First recorded activity by DIYBanter: Jun 2011
Posts: 5,708
Default Steel pipe for flag pole

...
Gunner


I really like your idea with the two pipes in the ground so you can pivot
the main pole down. Mine is a piece of concreted in PVC in the ground and I
lift the pole and drop it down in that PVC. It works fine for the weight of
the aluminum pole, but is a bit of a challenge with the two pipes.

Just to be clear, my main pole is 2" aluminum and does fine until winds are
up around 45-50 with a flag, then it's bending pretty good and will buckle.
The 1-1/4" sch40 is now inside the aluminum just to add strength. (1-1/4"
sch40 is the ID, so the OD is about 1-3/4 and fits pretty snug inside the 2"
aluminum sections) I previously had 1" sch40, with a joint mid way up, so
this is 1/4" larger, and now a single piece with no joints. So in theory,
it definitely increased strength from what I had but I'm sure it's still not
the greatest.

In the meantime, I will be looking for some pipe like you used. If this
doesn't hold up, i'll have a piece ready to use to make it stronger. I
definitely do like your ideal though.

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