chris kennedy
Senior Member
- Location
- Miami Fla.
- Occupation
- 60 yr old tool twisting electrician
This is from Mike's August 7th's newsletter.
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So a gentleman I'm working with was questioning my use of a CEE in a slab with a visqueen membrane under it. This is what the typical south Florida slab looks like.
View attachment 2128
View attachment 2129
Now notice that although there is visqueen under the pour, once the forms are stripped and site is backfilled to grade, the sides of the footers will be in direct contact with the earth. Also the many cuts around the plumbing and electrical bring the slab and footers into direct contact with the earth.
BTW, the new thumbnail format is much better. Nice job people.
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[/FONT]Q10. Is a Ufer ground required if there is a vapor barrier under the concrete of the footing?
A10. If a moisture/vapor barrier is installed under a concrete footer, then the steel rebar can?t be part of a concrete-encased electrode. The concrete must be in contact with the earth in order to qualify as an electrode [250.52(A)(3)].
So a gentleman I'm working with was questioning my use of a CEE in a slab with a visqueen membrane under it. This is what the typical south Florida slab looks like.
View attachment 2128
View attachment 2129
Now notice that although there is visqueen under the pour, once the forms are stripped and site is backfilled to grade, the sides of the footers will be in direct contact with the earth. Also the many cuts around the plumbing and electrical bring the slab and footers into direct contact with the earth.
BTW, the new thumbnail format is much better. Nice job people.