Question #1. A consultant developed the following design for a pavement that is expected to carry 10,000,000 ESALs. The pavement structure consists of four layers with an asphalt surface (AC1), an asphalt base (AC2), an untreated granular subbase (SB) and the natural fine-grained subgrade (SG). You have to evaluate her design and determine whether it is adequate using the criteria proposed by The Asphalt Institute. Based on your analysis you should make the following recommendations: What is the critical location and distress? Is the design adequate? If not, what would you do? . Eac = 450,000 psi haci = 4 in EAC2 = 350,000 psi hac2 = 4 in Esb = 65,000 psi hsb = 6 in Esg = 8,000 psi Depth Layer Maximum Strain (in microstrains, 10-) Longitudinal Transverse Vertical (tension) (tension) (compression) 125 110 150 3.9 7.9 120 100 180 Asphalt Surface Asphalt Base Granular Subbase Soil (subgrade) 8.1 129 146 320 14.1 154 117 275 NA = 0.0796. Et -3.291 91. E-.854 NG = 1.365. 10-9 54.477 Question #1. A consultant developed the following design for a pavement that is expected to carry 10,000,000 ESALs. The pavement structure consists of four layers with an asphalt surface (AC1), an asphalt base (AC2), an untreated granular subbase (SB) and the natural fine-grained subgrade (SG). You have to evaluate her design and determine whether it is adequate using the criteria proposed by The Asphalt Institute. Based on your analysis you should make the following recommendations: What is the critical location and distress? Is the design adequate? If not, what would you do? . Eac = 450,000 psi haci = 4 in EAC2 = 350,000 psi hac2 = 4 in Esb = 65,000 psi hsb = 6 in Esg = 8,000 psi Depth Layer Maximum Strain (in microstrains, 10-) Longitudinal Transverse Vertical (tension) (tension) (compression) 125 110 150 3.9 7.9 120 100 180 Asphalt Surface Asphalt Base Granular Subbase Soil (subgrade) 8.1 129 146 320 14.1 154 117 275 NA = 0.0796. Et -3.291 91. E-.854 NG = 1.365. 10-9 54.477