Answer: Drive it at an angle not exceeding 45 degrees from vertical. If rock is still encountered at an angle up to 45 degrees, the rod can be laid horizontally in a trench at least 30 inches deep.
(1) Below permanent moisture level. If practicable, pipe electrodes must be embedded below the permanent moisture level and be free from nonconductive coatings such as paint or enamel. Exception: A ...
Rods up to ¨ý inches (15.9 mm) in diameter can be driven with the LGRD-RV 16, while the LGRD-RV 25 can handle larger ground rods with diameters up to 1 inch (25.4 mm). Each driver delivers 1740 blows ...
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