burial depth pvc

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roger said:
Zero, see 300.5.

Roger
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If you put your pipe zero inches deep it will not be covered well with concrete, it is good to be under the concrete to maintain the integrity of the slab. I find it easier to get to the job after the stone is down and before the vapor barrier is laid and put the top of the conduit so it is just even with the top of the stone. This way it is out of harms way and protected during the pour and covered by 4" concrete.
 
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In defense of Roger just laying it on the ground would not be 0? of burial.

Notes:
1. Cover is defined as the shortest distance in millimeters (inches) measured between a point on the top surface of any direct-buried conductor, cable, conduit, or other raceway and the top surface of finished grade, concrete, or similar cover.

To just lay it on top of the ground would be an above ground installation.
 
jwelectric said:
In defense of Roger just laying it on the ground would not be 0? of burial.

Notes:
1. Cover is defined as the shortest distance in millimeters (inches) measured between a point on the top surface of any direct-buried conductor, cable, conduit, or other raceway and the top surface of finished grade, concrete, or similar cover.

To just lay it on top of the ground would be an above ground installation.
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I was saying that zero inches deep means the top of it is flush with the slab. So you think zero inches is correct?
 
Dennis, the question was,
when installing pvc under a slab inside a building what is the correct cover requirement?
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to be "under a slab" would mean that the PVC would be under the "slab on grade" it could be touching the bottom of the concrete and would not need any coverage of earth, stone, or what have you, in otherwords, zero coverage per 300.5

Roger
 
jwelectric said:
I now think that all three of us "tar heels" think alike.
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TARHEELS.jpg
 
I always attach the conduits to the rebar or wire mesh with tie wire. Holds it in place and insures conduit is encased in concrete.
 
John Valdes said:
I always attach the conduits to the rebar or wire mesh with tie wire. Holds it in place and insures conduit is encased in concrete.
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John, that's another situation.

I have been on jobs where per the specs conduit was not allowed to be in the pour/slab except where penetrating at 90 deg's.

Roger
 
roger said:
Dennis, the question was, to be "under a slab" would mean that the PVC would be under the "slab on grade" it could be touching the bottom of the concrete and would not need any coverage of earth, stone, or what have you, in otherwords, zero coverage per 300.5

Roger
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Thanks for clarifying that Roger. I was confused as usual. I guess we were saying the same thing but I didn't interpret the question correctly. You guys are too smart for me (Must be because I was a damn yankee before I became a TarHeel)...

Okay if you Tar Heels are so good how come no one knows how to spell-- Tarheel or Tar Heel?
 
Dennis, I agree, I think we were saying the same thing, we just went about it in different ways.

Now for spelling Tar heel, it is easier just to show a picture.

180px-Better_tar_heel.jpg


:grin:

Roger
 
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