This report covers the merger of criteria used in the Portland Cement Association's and MSHTO's pavement thickness design systems. The combined criteria is coupled with the principle of equal work as defined in classical physics to produce thickness design curves for portland cement concrete pavements. The thickness of portland cement concrete varied by approximately 0.15 inches for the same CBR and design EAL when the thickness of crushed-stone base varied from 3 to 6 inches. Therefore, the design thickness of the portland cement concrete is relatively insensitive to changes in thickness of the crushed stone base.

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The contents of this report reflect the views of the authors who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, of the Kentucky Transportation Cabinet, nor of the Federal Highway Administration. This report does not constitute a standard, specification, or regulation.