EXAMPLES OF SOIL RESISTIVITY

TABLE 3 EXAMPLES OF SOIL RESISTIVITY The electrical resistivity of various soil types under different climatic conditions and in the presence of underground waters. Soil Types (Column 1) : Lists different geological formations like clays, limestones, sandstones, quartzites, slates, granite, and fossil slates/schists/igneous rocks. Normal and High Rainfall Conditions (Columns 2 & 3) : Shows the probable resistivity value and the range of values encountered for each soil type in areas with greater than 500 mm of rainfall per year. Low Rainfall and Desert Conditions (Column 4) : Presents the range of resistivity values encountered in areas with less than 250 mm of rainfall per year. Underground Waters (Salids) (Column 5) : Indicates the range of resistivity values when underground waters are present. Note : An asterisk indicates that th...