For thinner asphalt concrete sections, the horizontal tensile strain at the bottom of the asphalt layers obtained using Jung's technique was found to be in reasonable agreement with Thompson's AUPP. It also was in good agreement for thinner sections with backcalculation of layer moduli and using these moduli in an elastic layer program to obtain the horizontal strain. Jung's method appears to overpredict strain in thick asphalt sections.

Seasonal ratios of strain calculated using Jung's method to the strain at the initial testing period were calculated. Similar seasonal ratios were obtained for pavements of similar type and subgrade stabilization type. The seasonal ratios could be used to incorporate seasonal effects for the wet-no freeze zone of North Carolina using three seasonal periods.

Fitting time series to the backcalculated moduli of the asphalt layers and to the subgrade moduli as suggested by Ali and Parker resulted in the most direct method to incorporate seasonal effects and calculate remaining life.

Serious difficulties were demonstrated in correctly estimating the time to failure and order of failure of three similar design sections.