CLAMP BACK/BACKSTRAP

[mstrlucky74]

If running 3/4" or 1"EMT exposed on concrete wall so you usually use these or just with RGS? Thanks.

 

[LarryFine]

I use typical 1-hole straps, unless the quantity calls for strut and strut-straps. What are you referring to?

 

[augie47]

wet location ??

 

[AKElectrician]

If running 3/4" or 1"EMT exposed on concrete wall so you usually use these or just with RGS? Thanks.

Whats RGS?

 

[infinity]

Rigid Galvanized Steel which is a type of RMC.

 

[GerryB]

They make one hole straps for rigid also. I had some one tell me once if you ran the pipe horizontal you had to put the strap below the pipe. (so the pipe doesn't jump out of the strap:?)

 

[LarryFine]

Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.

 

[ActionDave]

Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.

You and me against the world, baby.

 

[mstrlucky74]

Whats RGS?

rigid galvanized steel conduit

 

[kwired]

They make one hole straps for rigid also. I had some one tell me once if you ran the pipe horizontal you had to put the strap below the pipe. (so the pipe doesn't jump out of the strap:?)

Use the heavier walled straps and it don't really matter too much.

 

[infinity]

Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.

I agree, not that it really matters much if properly fastened, but hanging from above is better than holding up from below for the reason that you've mentioned.

 

[MTW]

Hanging or supporting. I use both, depending on conditions. But hanging so that the anchors don't fall out, on a cement wall, that's just wrong.

I use Nail-ins exclusively, even overhead. Gave up plastic anchors and tapcons years ago, for this reason.

MTW

 

[kwired]

Hanging or supporting. I use both, depending on conditions. But hanging so that the anchors don't fall out, on a cement wall, that's just wrong.

I use Nail-ins exclusively, even overhead. Gave up plastic anchors and tapcons years ago, for this reason.

MTW

Powder actuated nail-in's?

My luck with drive in type would be missing the nail and flattening a piece of EMT :blink:

 

[MTW]

I have a nice HILTI powder actuated gun but don't use it that much anymore either. It works great on some green concrete, 50-60 year old stuff, not so much. Leaves a nice big splatter hole many times.

Nail-ons are quite strong, come in many sizes, and can even be reused when necessary. I have a custom setting tool I use, that can reach inside the back of deep enclosures. Has one end to fully seat the strap, strut or enclosure against the wall, and the other end to set the pin 3/16" from fully home. That allows you to withdraw the pin and anchor, for relocation if necessary.

4 of these pins holding a control panel on the wall will easily support my weight climbing on it. There are many brands, but their not all created equal.

These are the ones I like.
https://www.strongtie.com/mechanicalanchors_mechanicalanchoringproducts/nailon_anchor/p/zinc-nailon

MTW

 

[kwired]

I have a nice HILTI powder actuated gun but don't use it that much anymore either. It works great on some green concrete, 50-60 year old stuff, not so much. Leaves a nice big splatter hole many times.

Nail-ons are quite strong, come in many sizes, and can even be reused when necessary. I have a custom setting tool I use, that can reach inside the back of deep enclosures. Has one end to fully seat the strap, strut or enclosure against the wall, and the other end to set the pin 3/16" from fully home. That allows you to withdraw the pin and anchor, for relocation if necessary.

4 of these pins holding a control panel on the wall will easily support my weight climbing on it. There are many brands, but their not all created equal.

These are the ones I like.
https://www.strongtie.com/mechanicalanchors_mechanicalanchoringproducts/nailon_anchor/p/zinc-nailon

MTW

That is still a type of wedge anchor, when you said nail-in I envisioned driving a nail directly into the concrete in some fashion.

Not saying that type won't ordinarily hold more then a plastic wedge anchor. Is somewhat non removable and one might need to consider that in some applications.