Abstract
The main objective of this study was to compare the flexible pavement design using the Alberta Transportation Pavement Design (ATPD) procedure to the recently developed Mechanistic Empirical Pavement Design Guide (MEPDG). Findings from this study explore the possibility of MEPDG implementation for pavement design in Alberta, Canada. Six different design cases were defined with three different traffic levels and two different subgrade materials. Each case was designed following the ATPD procedure. The ATPD design thicknesses were then used in the MEPDG for each case to predict the pavement performance reliabilities at the end of the 20-year design life. The design for each case was repeated 27 times, using the climatic files available in the MEPDG for Alberta. It was found that, when using the MEPDG, only the cases with a strong subgrade material and a low level of traffic meet the default limit value for total pavement rutting. Also, all sections designed following the ATPD procedure, when designed using the MEPDG, fail due to excessive International Roughness Index (IRI).
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