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Topic Title: Earthing System for Structure Columns
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Created On: 15 October 2012 04:06 PM
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 15 October 2012 04:06 PM
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power98

Posts: 10
Joined: 22 March 2011

Hi Everybody,

Does the BS require to connect the structure columns to earthing network? The columns are concret (not steel).

Thanks
 15 October 2012 07:56 PM
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cookers

Posts: 205
Joined: 10 February 2012

I would suggest you cannot connect concrete to an earthing grid. Not sure why you would want to do that! appears a bit pointless.

However, if the columns are re-inforced concrete, you can connect the steel re-inforcing bars to form an earthing grid, but this requires specialist pre-design of the re-inforcing bars (re-bars) throughout the structure.

Normal construction fabrication of re-bar "nests" utilise lightweight "tie wires" , if you are planning to use the re-bars as the earthing for the building you have to assemble the re-bars with special clamps or welded together to form a good reliable joint.

http://en.wikipedia.org/wiki/Ufer_ground
 17 October 2012 07:43 AM
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power98

Posts: 10
Joined: 22 March 2011

Thanks.

I'm not insisted to connect the columns to the earthing grid but my Client is oriented to the NEC while the design is based on BS.

So, he asked me to check whether this issue is permitted by BS or not.
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