Thank you for your question regarding deep ground wells, it is our pleasure to help.
Yes, it is quite possible to calculate the predicted resistance-to-ground of an electrode prior to installing it. The following link will show you the simplified formula:
However, the best way to do this calculation is with computer modeling software. We use the CDEGS engineering software program, the most validated software in the industry. Not only can a grounding system that meets the 1-ohm resistance-to-ground specification be accurately calculated (it may take a combination of deep wells along with the grounding grid), but the federally mandated Human Safety requirements (29 CFR 1910.269) can also be calculated.
Feel free to call us at 310-318-7151 California time and someone will be glad to speak with you about your project, free of charge.
The Engineering Team at E&S Grounding Solutions
Photo credit: E&S Grounding Solutions