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#83561 - 02/06/03 08:40 AM PVC under concrete
elecbob Offline

Registered: 08/23/02
Posts: 142
Loc: WA
customer saw cut the 8 inch thick concrete floor in his warehouse to install some plumbing. He wants some electrical installed too. Does the PVC conduit I'm installing for a feed to an outlet need to be 18 inches below finished grade? Any minimum spacing from the plumbing required?

[This message has been edited by elecbob (edited 02-06-2003).]

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#83562 - 02/06/03 08:47 AM Re: PVC under concrete
Redsy Offline

Registered: 03/28/01
Posts: 2138
Loc: Bucks County PA
Can't you encase it in the new portions of the slab?

#83563 - 02/06/03 09:58 AM Re: PVC under concrete
resqcapt19 Offline

Registered: 11/10/00
Posts: 2209
Loc: IL
There is no code depth requirement under a building. See Table 300.5. There is also no seperation requirement from the plumbing pipes in the NEC.

#83564 - 02/06/03 03:24 PM Re: PVC under concrete
golf junkie Offline

Registered: 04/22/01
Posts: 511
Loc: York, NE
There should be sand or pea gravel under the slab. Normaly I like to bury my conduit in the sand just below the surface.
That way I don't have to worry about it getting busted during the pour and there is no chance of the slab cracking along the conduit line.



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