Earthing & Grounding Design for Saudi Industrial Sites
Soil resistivity in the Kingdom often exceeds 1000 Ω·m. Standard grids won't cut it.
Use Wenner four-pin testing across multiple seasons before designing. Then model in CDEGS or ETAP Ground Mat to meet IEEE 80 step/touch limits.
Chemical earth electrodes (GEM-filled) and deep-driven rods can dramatically reduce resistance in rocky terrain. Bond all metallic structures into the same grid.
Re-test grid impedance annually — corrosion and construction can both degrade performance silently.
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