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Electrical Earthing System Design & Soil Resistivity Testing

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Soil Resistivity Testing Buried Interference

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 Buried Interference can occur when, bare metallic structures (including concrete-encased metal) of significant length buried in the vicinity of the measurement traverse can distort Soil Resistivity Testing results. [Read more…] about Soil Resistivity Testing Buried Interference

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Soil Resistivity Testing Surface Layer Resolution

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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Soil Resistivity Testing Why Measure Soil Resistivity?

Soil Resistivity testing why measure? is Part 2 in 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 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 Why Measure Soil Resistivity?

The ‘Soil’ itself forms the very medium that any fault current will flow through.  Therefore, understanding the electrical properties of the soil in which an earthing/grounding system is deployed is absolutely vital.   [Read more…] about Soil Resistivity Testing Why Measure Soil Resistivity?

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Soil Resistivity Testing Ground Soil Resistivity

Ground Soil Resistivity is Part 1 of a series of short posts on Soil Resistivity Testing and the common mistakes encountered. We offer practical advice on how to avoid the Soil Resistivity Testing 10 Common Mistakes.

Soil Resistivity Testing 10 Common Mistakes

What is Ground Soil Resistivity?

‘Soil‘ is the term used in Electrical Earthing Design to define the upper geology. Which is of particular interest to us when designing earthing or grounding systems.  The soil is the local geology consisting of layers that are primarily composed of minerals, mixed with at least some organic matter. However this differs from their parent materials in their texture, structure, consistency, colour, chemical, biological and other characteristics.

Geologists might refer to soil as the combination of ‘drift’ and/or bedrock.  The layman might refer to Soil more as ‘dirt’ or ‘ground’ (not to be confused with the American term).

The soil is the loose covering of fine rock particles that covers the surface of the earth. Therefore the soil is the end product of the influence of the climate, relief (slope), organisms, parent materials (original minerals), and time. (http://en.wikipedia.org/wiki/Soil)

[Read more…] about Soil Resistivity Testing Ground Soil Resistivity