Abstract
Studies on ground beds and anode configurations were undertaken by the authors as members of the Scale and Corrosion Committee of the Chief of Engineers Office. Acute soil corrosion problems at some Army installations in Southwestern and Western areas led the Committee to the consideration of cathodic protection. Previous design criteria showed that the voltage required, and therefore the power consumption, is determined almost entirely by the resistance of the anode because of its limited area. Study was made of a number of different anodes of various dimensions and geometric shapes installed both vertically and horizontally. A brief analysis of the potential gradient in the medium between the anode and the cathode is presented. Equations are developed for the resistance of a hemisphere to remote ground and for the resistance of a vertical rod to ground. Calculated resistances obtained by using the equation developed for a vertical rod are compared in tabular form with those obtained by using the equatio...
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