emt in concrete

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Maybe I should have been a little more gentle. I guess I don't know much about smurf tube.
My comments originate from the 10 years or so when I was working high rize commercial buildings. We used nothing but EMT in the slab and every where else on these projects. I have never used smurf tube. It just did not look like quality work to me, especially when it was installed so it was allowed to float up and some was resting on the plywood deck. We always tied down EMT to the iron rods in slabs and stubbed up for recepts, goosenecked down for fixture raceways etc.
Has time changed that much since I was in my twenties? Those 10 years on commercial jobs were in the early 80's.
What is smurf tube referred to in the code book? Is it smooth on the inside?

PS....IF anyone saw the show, they had smurf for the raceway, but only pulled two wires? No EGC.

"Isn't smurf tube the same as FMT"? Doesn't 360.12 apply??? Good question steve.
 
John Valdes said:
Maybe I should have been a little more gentle. I guess I don't know much about smurf tube.
My comments originate from the 10 years or so when I was working high rize commercial buildings. We used nothing but EMT in the slab and every where else on these projects. I have never used smurf tube. It just did not look like quality work to me, especially when it was installed so it was allowed to float up and some was resting on the plywood deck. We always tied down EMT to the iron rods in slabs and stubbed up for recepts, goosenecked down for fixture raceways etc.
Has time changed that much since I was in my twenties? Those 10 years on commercial jobs were in the early 80's.
What is smurf tube referred to in the code book? Is it smooth on the inside?

PS....IF anyone saw the show, they had smurf for the raceway, but only pulled two wires? No EGC.

"Isn't smurf tube the same as FMT"? Doesn't 360.12 apply??? Good question steve.
Click to expand...

I believe smurf is ENT Article 362

I've seen it used but never installed myself. Does look uh...Cheap maybe?
 
I would say that aprox 90% of the contractors in my area use pvc with rigid or imc 90's leaving concrete where not in a wall. The other 10% use rmc or imc not emt.
 
steve66 said:
Isn't smurf tube the same as FMT? Doesn't 360.12 apply??? :-?
Click to expand...

No, none of Article 360 "Flexible Metal Tubing" applies to
smurf tube.

'Smurf' is covered by Article 362, check out 360.10(6)
 
Thanks for the information friends. So would you actually install smurf in a concrete slab?......Thanks John
 
iwire said:
No, none of Article 360 "Flexible Metal Tubing" applies to
smurf tube.

'Smurf' is covered by Article 362, check out 360.10(6)
Click to expand...

My mistake -I was looking at the right photo in the handbook, but somehow I started reading the wrong section.

But I'm really supprised this stuff is allowed in concrete. It seems like the weight of the concrete would squish it somewhat.

Steve
 
iwire said:
No, none of Article 360 "Flexible Metal Tubing" applies to
smurf tube.

'Smurf' is covered by Article 362, check out 360.10(6)
Click to expand...
.


I think this should be 360.12(6)

360.12 Uses Not Permitted.
FMT shall not be used as follows:
(1) In hoistways
(2) In storage battery rooms
(3) In hazardous (classified) locations unless otherwise permitted under other articles in this Code
(4) Underground for direct earth burial, or embedded in poured concrete or aggregate
(5) Where subject to physical damage
(6) In lengths over 1.8 m (6 ft)
 
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