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PVC under concrete #83561
02/06/03 11:40 AM
02/06/03 11:40 AM
E
elecbob  Offline OP
Member
Joined: Aug 2002
Posts: 141
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?
Thanks
Bob

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

2017 / 2014 NEC & Related Books and Study Guides
Re: PVC under concrete #83562
02/06/03 11:47 AM
02/06/03 11:47 AM
R
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Can't you encase it in the new portions of the slab?

Re: PVC under concrete #83563
02/06/03 12:58 PM
02/06/03 12:58 PM
R
resqcapt19  Offline
Member
Joined: Nov 2000
Posts: 2,148
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.
Don


Don(resqcapt19)
Re: PVC under concrete #83564
02/06/03 06:24 PM
02/06/03 06:24 PM
G
golf junkie  Offline
Member
Joined: Apr 2001
Posts: 507
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.

GJ


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