Soil Resistivity Testing 10 Common Mistakes
This is a series of short posts on Soil Resistivity Testing and the common mistakes encountered, with practical advice on how to avoid Soil Resistivity Testing 10 Common Mistakes.
Soil Resistivity Testing Surface Layer Resolution – In short, not enough attention is paid to measurements being taken at the shorter distances during the soil Resistivity Testing (Wenner Method). This is not covered in any formal standard or code of practice, it’s just something that you pick-up with experience.
Short surface soil resistivity measurements in themselves are NO replacement for the full range of spacings required to provide the detail soil model for use in Electrical Earthing Design but these soundings made within the first meter spacings are essential to determining the accuracy of subsequent wider measurements.
Without high resolution data during the first spacings, erroneous trending of the outputs can result. This is the subject of a separate white paper.
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