Soil electric resistivity test
The purpose of this test is to determine corrosion levels of the soil that affect the metallic materials. When this factor is not anticipated or controlled, the life use of the metallic structure can be significantly reduced.
The Wenner Test is one of the most commonly used methods to determine Soil Electric Resistivity. The method consists in inserting 4 electrodes in a straight line and at a same penetration depth. A current “I” is applied to the external electrodes inducing an electric potential between the internal electrodes. A value for the electric resistivity of the soil is then calculated based on Ohm’s Law.