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#107295 - 10/19/04 11:10 PM Concrete LB  
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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
[Linked Image]


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#107296 - 10/20/04 07:12 PM Re: Concrete LB  
Dave55  Offline
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Joined: May 2004
Posts: 697
Crystal Lake, Illinois, USA
Concrete-tight


#107297 - 10/20/04 07:49 PM Re: Concrete LB  
Ohm_Boy  Offline
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Joined: Oct 2004
Posts: 7
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?


#107298 - 10/20/04 08:49 PM Re: Concrete LB  
John Steinke  Offline
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Joined: Apr 2001
Posts: 518
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.


#107299 - 10/20/04 09:50 PM Re: Concrete LB  
Ohm_Boy  Offline
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Posts: 7
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. [Linked Image])


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


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Fullerton, CA USA
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neither of which will long withstand being eaten up by the alkali in the concrete.


[Linked Image]Thank goodness they used asphalt on this one

[Linked Image]


#107301 - 10/21/04 12:32 AM Re: Concrete LB  
Ohm_Boy  Offline
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Joined: Oct 2004
Posts: 7
Hmmm... so "LB Paving" a popular practice, I see. I feel so much better now.


#107302 - 10/21/04 05:32 AM Re: Concrete LB  
Big Jim  Offline
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Joined: Jul 2003
Posts: 394
Denver, CO USA
Was that a code required "encasement"?


#107303 - 10/21/04 10:47 PM Re: Concrete LB  
John Steinke  Offline
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Joined: Apr 2001
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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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