Found this in one of the code places. I know in some places around here
that 2 rods must be installed I think 6 feet apart. Yes, all ground rods
from every one must ge bonded together. I have several rods and have put in
a couple for my radio tower. All the rods are bonded together except the
one at the tower which is about 6 feet away from the other rods.
(G) Ground Rod Electrodes. Ground rod electrodes must be installed so that
not less than 8 ft of length is in contact with the soil. Where rock bottom
is encountered, the ground rod must be driven at an angle not to exceed 45
degrees from vertical. If rock bottom is encountered at an angle up to 45
degrees from vertical, the ground rod can be buried in a minimum 30 in. deep
trench. Figure 250??"102
Had to drive two 10 foot rods in 1970, I only had a home made sledge made up
of steel pipe for the handle and a solid steel head. The first 4 feet went
relatively easy, but the last 6 feet were hell. The soil under the 4 foot
level is heavy hard pan clay, almost shale. It took all day to drive the two
rods in. Near the end I was getting only one inch for about 30 hits with the
sledge or 1/32" per hit. It was a good thing that I was raising the soil
level by three feet, so I did not have to drive the last foot. Power
equipment would have been welcome but was not available.
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