On 4/24/2014 1:36 PM, Brian Amos wrote:
I have the equipment to drill a 6 inch hole through just about
anything, what if I placed my grounding rods in concrete or grout?
I would think it wouldn't hurt. It might act as a small UFER ground.
increasing the contact area of 20 inches Vs 1.9 inches or almost 11
times the area of the single ground rod.
How well that'd hold true? I don't know.
73
'
Roger (K8RI)
Would that help or hurt the grounding? I do have a ground resistance
meter I use for work for providing soil resistance values for
grounding communication towers and equipment so I could test it I
suppose, but I usually like to know what I'm getting myself into. I
have seen them drive a steel lathe (about 3/4 inch in diameter) into
slightly weathered bedrock with a post pounder on a bobcat. The
cobbles and boulders just cause it to move a bit to the right or left.
Of course the commercial towers I do the foundation design for
usually have a grounding grid surrounding them. I am tempted to see
if one of the tower engineers will design my grounding system with a
similar system, they tend to suffer little if any damage from
lightening, and being on mountain tops I am sure they are struck quite
often.
Brian
KF7OVD
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