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#107295 - 10/19/04 08:10 PM Concrete LB
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Registered: 10/07/00
Posts: 3142
Loc: NY, USA
 Quote:
Seems that one of our clients decided to relocate their air compressors (Ingersoll-Rand screw type) and poured a nice, thick concrete pad on the south side of their mill. The 2" conduit LB feeds conveyors just beyond that new pad. I guess that's how they make sure that they don't dig up the conduit with a backhoe?

-Ohm_Boy

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#107296 - 10/20/04 04:12 PM Re: Concrete LB
Dave55 Offline
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Registered: 05/08/04
Posts: 666
Loc: Crystal Lake, Illinois, USA
Concrete-tight

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#107297 - 10/20/04 04:49 PM Re: Concrete LB
Ohm_Boy Offline
Junior Member

Registered: 10/19/04
Posts: 4
Yep. I figure it's wire-tight now, too. Although I suppose that as long as we can get a porta-band in there, it's still servicable, right? Anyone know if the code requires that both screws actually be in the removable portion of a cover?

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#107298 - 10/20/04 05:49 PM Re: Concrete LB
John Steinke Offline
Member

Registered: 04/03/01
Posts: 509
Loc: Reno,Nv., USA
Actually, my concern is that most LB's are made of zinc, or aluminum, neither of which will long withstand being eaten up by the alkali in the concrete. I do not believe that such bodies could ever be listed for such burial.
The LB must be "accessible." As NEC defined, that does not include the use of a jackhammet to reach it.

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#107299 - 10/20/04 06:50 PM Re: Concrete LB
Ohm_Boy Offline
Junior Member

Registered: 10/19/04
Posts: 4
 Quote:
most LB's are made of zinc, or aluminum

This one is PVC.
On the brighter side, we can cut and glue it indefinitely. )

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#107300 - 10/20/04 07:55 PM Re: Concrete LB
electure Offline

Member

Registered: 12/24/00
Posts: 4226
Loc: Fullerton, CA USA
 Quote:
neither of which will long withstand being eaten up by the alkali in the concrete.


Thank goodness they used asphalt on this one


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#107301 - 10/20/04 09:32 PM Re: Concrete LB
Ohm_Boy Offline
Junior Member

Registered: 10/19/04
Posts: 4
Hmmm... so "LB Paving" a popular practice, I see. I feel so much better now.

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#107302 - 10/21/04 02:32 AM Re: Concrete LB
Big Jim Offline
Member

Registered: 07/18/03
Posts: 377
Loc: Denver, CO USA
Was that a code required "encasement"?

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#107303 - 10/21/04 07:47 PM Re: Concrete LB
John Steinke Offline
Member

Registered: 04/03/01
Posts: 509
Loc: Reno,Nv., USA
Here, I go through the trouble of writing a brilliant post, and you guys have to spoil it by pointing out a few details (PVC, Asphalt) that let the air out of my balloon....

Don't you just hate it when that happens?

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