encased grounding

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You want to have some real fun? Call the Building Inspector and tell him you are gonna jackhammer his footing down to the rebar cause the Electrical Inspector said so. Ruining the structural integrity of a footing is not acceptable
 
Accounts of concrete damaged by Lightning

Accounts of concrete damaged by Lightning

hornetd said:
klillemo
Over the course of several incidents I have never seen any spalling of the concrete. I realize that evidence is only anecdotal but if what you suggest is occurring I would have heard of at least one such incident in over forty years in the craft. ..... You are not the first person to raise this as a possibility but if this was in fact happening in the real world I suspect we would be hearing about it.
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The discussion here:
http://www.mikeholt.com/newsletters.php?action=display&letterID=150
used to have a first hand account of a concrete bridge stanchion where the rebar was exposed due to a lightning strike. Does any one else have first hand accounts of lightning strikes and concrete damage?

Here are other accounts and references:
http://202.186.86.35/special/online/hartono/diagnose.html
http://www.lightningsafety.com/nlsi_info/damage_photos.html
http://www.lightningmaster.com/THELIGHTNINGPHENOMENON.htm
http://www.pubs.asce.org/WWWdisplay.cgi?8400790
 
Re: Accounts of concrete damaged by Lightning

Re: Accounts of concrete damaged by Lightning

I believe minor damage to concrete is likely to be the least of your problems if your house gets hit by lightning.

Keep in mind the ground connection is not, nor was it ever designed as a form of lightning protection.
 
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