http://www.srh.noaa.gov/lch/severe/lsuagltg.php
The above link will show a little of what lightning can do.
It was not determined if this was a negative or positive pulse.
Also note that the lightning followed cracks in slab/base and not created
them in the first place. The wire mesh is about 10 gage normally, and it failed.
I know this not a tower base but interesting never the less to assess how
safe we are from lightning.
Nick
WB7PEK
---------------------------------
Sneak preview the all-new Yahoo.com. It's not radically different. Just
radically better.
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