If that's the case, why bother with the rods at all?  Just lay *a   
lot* of copper strap in a trench as deep as practical and call it   
good?  2" wide strap is the same as the circumference of a 5/8"   
ground rod, but has twice the surface area because there are two   
sides to the strap.
Chris
KF7P
On Nov 12, 2012, at 16:10 , n8de@thepoint.net wrote:
Ground rods  to NOT have to be driven VERTICALLY DOWNWARD ... just   
INTO the soil.
73
Don
N8DE
Quoting Mat Eshpeter <kk1c@live.com>:
I am finally getting around to putting up my 60' AN Wireless tower   
 on top of a rocky ridge in WV. I rented a Hilti demo hammer and  
got   about 1/3 of my rods in to the ground at least 4' -- but the   
 majority are only 2 or 3 feet deep because of the rocks/ledges. I   
 don't think I have much of a choice other than to cut the rods off  
  and drive the remnants into the ground field and exothermically   
weld  my 20 gauge copper strap to all of these shallow rods.
Other than paying big money for a well drilling rig to drill some    
deep 6" holes and filling them with bentonite (which may not be    
possible given the slope of the land and the fact that I now have 8  
  trenches running 75' out from the tower pad) do I have any other   
 practical alternatives?
tnx,Matkk1c
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