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Mechanistic-Based Overlay Design Procedure for Washington State Flexible Pavements


The reported study was used to develop an overlay design procedure for Washington state's flexible pavements based on mechanistic pavement analysis. This design procedure incorporates nondestructive testing (NDT) to estimate layer resilient moduli, seasonal moduli adjustments and failure criteria of asphalt concrete fatigue cracking and subgrade rutting. All necessary computations can be done with two primary microcomputer oriented software packages: EVERCALC to estimate layer moduli form NDT data and EVERPAVE to estimate the needed overlay thicknesses.


  • Date Published: January, 1989
  • Publication Number: WA-RD 170.1
  • Last Modified: September 13, 2007
  • Authors: Joe P. Mahoney, Sang W. Lee, Newton C. Jackson, David E. Newcomb.
  • Originator: Washington State Transportation Center (TRAC)
  • # of Pages: 71 p., 1,113 KB (PDF)
  • Subject: Asphalt concrete, Design methods, Failure, Flexible pavements, Fracture mechanics, Layer coefficient (Pavements), Microcomputers, Modulus, Modulus of resilience, Nondestructive tests, Overlays (Pavements), Ruts (Pavements), Seasons, Software, Subgrade (Pavements), Thickness.
  • Keywords: Pavement, overlay, mechanistic, resilient modulus, failure criteria, seasonal variation.
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This abstract was last modified April 29, 2008