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MIL-HDBK-419A
Over a period of time, salt very likely will move into the soil adjacent to the electrode backfill and therefore
will increase the effective area of the ground electrode and in turn reduce the resistance values. The level of
the backfill should be checked annually to insure adequate levels are maintained to replenish this loss due to
see page.
Figure 2-32. Apparent Resistivity for Two Soils at Various Moisture and Salt Contents
Figure 2-33. Configuration of Nearly Horizontal
Figure 2-34. Resistance-to-Ground Curves for
Electrodes Placed in the Thawed Active Layer
an Electrode Driven into Ice-Rich Silt
2-73
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