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).]

Can't you encase it in the new portions of the slab?

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

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