GRC vs. IMC

[LarryFine]

How does IMC compare to rigid and EMT as far as corrosion resistance? I work in a corrosive environment where EMT deteriorates quickly, but not everything has to be as heavy-duty as rigid.

Sounds like a perfect application for PVC.

 

[76nemo]

Sounds like a perfect application for PVC.

Would you want the possibilty of someone smacking PVC carelessly with a pallet jack and a well loaded 3ph load???

 

[LarryFine]

Would you want the possibilty of someone smacking PVC carelessly with a pallet jack and a well loaded 3ph load???

If it's subject to that kind of damage, you'd be using Sched 80.

 

[TOOL_5150]

I shouldn't be looked at like thin wall rigid pipe, but like thick wall EMT.:grin:

big difference between IMC, RMC and EMT - EMT is not conduit.

~Matt

 

[76nemo]

If it's subject to that kind of damage, you'd be using Sched 80.

If it's subject to that kind of damage in a Class 1 environment, I'd be voting on rob roy. Pallet jacks, fork lifts, etc., in the area, to heck with sch80

 

[jdsmith]

If it's subject to that kind of damage in a Class 1 environment, I'd be voting on rob roy. Pallet jacks, fork lifts, etc., in the area, to heck with sch80

Or use aluminum rigid. It's a pain to work with, with it's probably not as bad as rob roy. Depends on what ype of corrosive environment you have I guess. We use aluminum rigid around cooling towers, but I'm sure there are some atmospheres that will attach aluminum as much as zinc and steel.

 

[don_resqcapt19]

I just installed about 400' of 1" IMC. First time I had ever used it and it seemed very easy compared to RMC. Heck of a lot easier to bend at least. I guess my only concern is that it doesn't feel like it is a tight fit in the couplings even though the threads are bottomed out. I'm a little concerned about water-tightness. Should I be?

My experience was that it is much harder to bend than is rigid. As far as water tightness, conduit couplings have straight threads and are not water tight.

 

[Smart $]

Or use aluminum rigid. It's a pain to work with...

I have to [with emphasis ] adamantly disagree with that remark.