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Old 04-07-2019, 10:29 AM   #1
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Default BIG pipe clamp on a Sunday?

I have to mount some fairly heavy equipment to a BIG steel fence post, about 8" diameter. I have to make this as vibration resistant as possible.

Normally I'd use U bolts to mount strut, but I don't know if I ever got them that size and I'm definitely not getting any on a Sunday.

Any ideas for a bomb proof attachment to a big fence post with what's in my truck, basement, Home Depot, or Lowes?

I thought about bending some 3/4" threaded rod in a half inch bender, no idea if that is doable but I feel like the rod would rust out.

I was also thinking about making some giant strut clamps out of some flat steel stock I have on hand ... looking for something much, much easier than that
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Old 04-07-2019, 10:33 AM   #2
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Why not drill the post?
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Old 04-07-2019, 10:41 AM   #3
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Build a freestanding rack up against the pole on Sunday. Then no rush on the attachment to the post.
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Old 04-07-2019, 11:12 AM   #4
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Welder friend.
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Old 04-07-2019, 11:19 AM   #5
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Grinnell clamp and bolts? Bolt to the post? Notch a piece of strut, put it on the back side and sandwich the post with ready rod and strut? Bolt c-channel to the post, then bolt your strut to it?

I've seen lots of "field made u-bolts" and they seem to last forever. On a fencepost it should be ok, but on a process pipe of any kind most companies won't let that fly as the threads will mark up the pipe and can cause a weaker spot in it..
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Old 04-07-2019, 11:26 AM   #6
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Why not drill the post?
That's what I'd do.

If you can't find bolts long enough, use all-thread.
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Old 04-07-2019, 11:56 AM   #7
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Quote:
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I have to mount some fairly heavy equipment to a BIG steel fence post, about 8" diameter. I have to make this as vibration resistant as possible.
We would weld it.

We have a portable Thermal Arc inverter stick welder we take out on jobs to weld strut and similar where we are worried about fasteners vibrating loose. I think we paid $700 for it a few years ago.

We are getting ready to do a big grain system and all the strut will be welded when we're finished.

If you haven't learned to weld, it's a handy skill to have.

Buy a little welder, pickup some "drops" from the local steel yard for cheap, and practice at home. Well worth it in my opinion to know how to do it.

We were welding a strut frame up on Thursday with our MIG welder. I showed one of the apprentices in 10 minutes of instruction how to weld and lay down the basic beads we needed onto the frame. After about an hour of welding, he was laying down some nice beads.
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Old 04-07-2019, 01:14 PM   #8
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Why not drill the post?
The equipment is wide so it would wiggle too much with attachments only along the post.
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Old 04-07-2019, 01:20 PM   #9
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It's beyond my meager welding skills, although I could scare up a welder if I had to ... but I am not sure they'd allow it, and it's got to be pretty high up, it would be a little hairy welding up there.

This fence is pretty high, a 32' extension ladder just barely gets you to the top of the fence posts.
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Old 04-07-2019, 04:08 PM   #10
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I thought about bending some 3/4" threaded rod in a half inch bender, no idea if that is doable but I feel like the rod would rust out.


DON'T do this unless it's already a junk bender. I ruined one trying to bend ground rods (don't ask).

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Old 04-07-2019, 05:13 PM   #11
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Hyg...might find it in stainless steel...

https://www.fastenal.com/products/details/46788

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Old 04-07-2019, 05:56 PM   #12
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How heavy is heavy? I like the bent all thread idea, but 3/4" is huge. If you're worried about it rusting, you could spray some rustoleum on it, or some galvanizing paint.

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Old 04-07-2019, 06:41 PM   #13
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It's beyond my meager welding skills, although I could scare up a welder if I had to ... but I am not sure they'd allow it, and it's got to be pretty high up, it would be a little hairy welding up there.

This fence is pretty high, a 32' extension ladder just barely gets you to the top of the fence posts.
Isn’t there an easier way to make a buck?
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Old 04-07-2019, 07:09 PM   #14
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Isn’t there an easier way to make a buck?
Every goddamned day I look for.

So far, nothing.
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Old 04-07-2019, 07:47 PM   #15
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Not much help today but Mc Master Carr has 8" U bolts . Their online catalog is easy to navigate and they will sell to anyone . Another thing is they are extremely reasonable on shipping.

LC
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Old 04-07-2019, 07:52 PM   #16
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It's beyond my meager welding skills, although I could scare up a welder if I had to ... but I am not sure they'd allow it, and it's got to be pretty high up, it would be a little hairy welding up there.

This fence is pretty high, a 32' extension ladder just barely gets you to the top of the fence posts.
What is the difference between welding up there and hanging big, heavy electrical equipment? You should be in a lift.
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Old 04-07-2019, 08:01 PM   #17
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Quote:
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It's beyond my meager welding skills, although I could scare up a welder if I had to ... but I am not sure they'd allow it, and it's got to be pretty high up, it would be a little hairy welding up there.

This fence is pretty high, a 32' extension ladder just barely gets you to the top of the fence posts.
how big this equipment and how much weght you are talking about and top on 8 inch post .. ? if so .,

Just get either bucket truck or rough terrain lift unit to reach that high.

Just get oversized U bolts or pipehanger and lock it down on strap one of the two work but drill a hole and run a staybolt thru or weld the bracket to lock it in place.
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Old 04-07-2019, 08:37 PM   #18
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It's too late, I know, but 1/8" x 1" flat steel from the big box is easily bent around the pole.
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Old 04-08-2019, 11:58 AM   #19
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Are you still alive, splatz?

I’m concerned about a guy 30’ in the air trying to build a rack out of haywire and bubble gum.
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Old 04-08-2019, 01:03 PM   #20
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Are you still alive, splatz?

I’m concerned about a guy 30’ in the air trying to build a rack out of haywire and bubble gum.
I'd be more concerned with the people below.
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