Chapter Three: PART 2: DEFINITIONS


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Chapter Three: PART 2: DEFINITIONS
10106001010401 Chapter Three: PART 2: DEFINITIONSApparent resistivity‚ÄÉThis is not defined in either BS 7671 or BS 7430. Apparent resistivity is a fictitious soil resistivity assuming theoretically homogenous soil (also referred to as uniform soil or single-layer soil) that is generated from a single measurement (from a Wenner four-point soil resistivity test) to provide an average resistivity from the surface of the earth down to a depth roughly equivalent to the spacing of the probes. To generate an accurate soil model, numerous apparent resistivity measurements should be taken at specific spacing (see Soil modelling).
Citation
David R. Stockin: McGraw-Hill's Guide to UK Wiring Standards for Earthing & Bonding. Chapter Three: PART 2: DEFINITIONS, Chapter (McGraw-Hill Professional, 2017), AccessEngineering Export