In both pavement structures for both modulus values of asphalt layer, about 50% of the combinations caused a prime cost close to the base structure cost Figure 4 In order to do this, all fatigue laws combinations in a cost range of ± U$ 52,631 at the base structure cost were taken. Fatigue laws corresponding to these combinations are:
• Leyes de fatiga de deflexión de la estructura: Instituto de Asfalto, Criterio Checoslovaco, Crit.