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Concrete LB #118685 10/19/04 11:10 PM
Joined: Oct 2000
Posts: 3,631
Admin Offline OP
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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
[Linked Image]

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Re: Concrete LB #118686 10/20/04 07:12 PM
Joined: May 2004
Posts: 697
D
Dave55 Offline
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Concrete-tight

Re: Concrete LB #118687 10/20/04 07:49 PM
Joined: Oct 2004
Posts: 7
O
Ohm_Boy Offline
Junior Member
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?

Re: Concrete LB #118688 10/20/04 08:49 PM
Joined: Apr 2001
Posts: 518
J
John Steinke Offline
Member
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.

Re: Concrete LB #118689 10/20/04 09:50 PM
Joined: Oct 2004
Posts: 7
O
Ohm_Boy Offline
Junior Member
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])

Re: Concrete LB #118690 10/20/04 10:55 PM
Joined: Dec 2000
Posts: 4,283
electure Offline
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Quote
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]

Re: Concrete LB #118691 10/21/04 12:32 AM
Joined: Oct 2004
Posts: 7
O
Ohm_Boy Offline
Junior Member
Hmmm... so "LB Paving" a popular practice, I see. I feel so much better now.

Re: Concrete LB #118692 10/21/04 05:32 AM
Joined: Jul 2003
Posts: 394
B
Big Jim Offline
Member
Was that a code required "encasement"?

Re: Concrete LB #118693 10/21/04 10:47 PM
Joined: Apr 2001
Posts: 518
J
John Steinke Offline
Member
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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