[TowerTalk] Lightning

[Shawn Donley]

Here's one documented case of lightning damage to concrete.  I had posted it before but here's a repeat.


https://www.copper.org/applications/electrical/pq/casestudy/a6137/a6137.html


In this case a concrete guy anchor was damaged. But looking at the pictures, this might have been caused by moisture entry due to surface cracking with the lightning strike just finishing it off as the current pulse turned the moisture into steam. Hard to say. I think the real question is if a lightning strike can cause internal damage to a tower concrete foundation that you can not easily detect.


N3AE