Just got My 2005 Code Book, looking at some changes, & it seems We are going to have some issues with grounding rebar in concrete. Does anyone have any ideas on this yet, Would it be possible to have the concrete contractors leave a section stubed out above the pour ? On jobs where there aren't any conduit runs to be incased, the EC may not be anywhere near the site when the pour occurs. Also, it looks like Building Steel, Rebar, Metal Waterline etc will ALL be connected now.
I think what will have to happen is that if the EC isn't on site before or during the pour, the footing contractor will have to stub out a piece of rebar for the EC to tie onto. As far as the building steel, water line, etc., these were already required to be tied together.
I better make sure we're on the same page. You're talking about 250.50, right?
[This message has been edited by Ryan_J (edited 10-28-2004).]
Ryan Jackson, Salt Lake City
Re: New Grounding Methods ???#99331 10/28/0408:53 AM10/28/0408:53 AM
Now that it is going to be required everywhere . . . eventually. How does Florida do it now? I believe they require the Ufer throughout the state and the concrete contractor just turns up a piece of the rebar in the area of the service. I would like to hear how it's done in Florida now.
They turn up a #5 in SW Florida. It comes up into the block cell and they knock a hole so the can get to it (usually sprayed green so it doesn't get poured solid when they do the dowels). The electrician pushes his #4 down from the panel to meet the #5, puts a bronze acorn on it and puts a blank cover over the hole.
Re: New Grounding Methods ???#99338 12/30/0408:58 AM12/30/0408:58 AM
It is my opinion that the intent of previous editions of the code was that the rebar system was supposed to be used as a portion of the grounding electrode already. The 2005 change from "If available on the premises" to "that are present at" is simply an effort to more concisely spell out what the intent was. There is nothing new here. We should have been connecting into the rebar system all along.