Ever heard of this?


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Old 04-05-06, 04:01 PM
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Question Ever heard of this?

I talked to some masons about building a foundation for a finished crawl space as an addition to our house. One went through everything he would do which included "two #4 bars in the footing tied to a ground wire". He would use wire reinforcing every other course, I believe grounded as well. He says that code now requires the grounding of the support metal due to potential lightning strikes.

Anyone ever heard of this?

Thanks guys!
 
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Old 04-05-06, 05:11 PM
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Ever heard of this?

Wire reinforcement every other or third course is just good construction practice.

I would question and intellegence or reasoning of someone that felt it had to be "grounded". What will he connect it with and how deep will be the copper grounding rod? - Sounds like someone that is confusing a few items.

I am involved in writing some code items and have not run across this application unless I am not reading the information correctly. Maybe he is referring to a multi-story steel structure.

Dick
 
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Old 04-05-06, 05:56 PM
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You don't ground reinforcing steel in concrete or horizontal reinforcing in CMU. Neither has contact with anything that would require it.
 
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Old 04-05-06, 06:54 PM
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Check with your local building code office. Codes often vary from area to area.
 
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Old 04-05-06, 07:40 PM
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Here is the theory:

http://www.psihq.com/iread/ufergrnd.htm

It is called "Ufer grounding". Check your code, as the man says.
 
 

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