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FY26 PMED Q3 Enhancements

March 31, 2026

The Structure Builder is here! This significant user interface improvement went online In February. The new ‘Structure’ component allows users a choice of either selecting from design templates using the ‘Template’ component and editing them as needed or starting from scratch by pulling individual material layers from the selections in the ‘Materials’ component. Afterwards, PMED runs the corresponding performance models for the final design type. The program will prevent users from running a design that is not currently feasible to analyze, such as one with an unbound base layer between an AC layer and a PCC subbase.

A tutorial on the Structure Builder is available from a recent PMED webinar that users can watch here – https://www.youtube.com/watch?v=oqK2PcCJsmM&list=PLRrkQeKH76wallCIc7sd5D4zZPlefDh1r&index=24&t=997s

  • Supplementing implementation of the Structure Builder is the movement of material ‘k’ calibration coefficients from the ‘Calibration’ component to the ‘Materials’ component. The logic behind this transfer is the fundamental difference between coefficients that are specific to a material, such as fatigue and plastic strain for an asphalt mix, which shouldn’t change regardless of how used in any pavement design, and the transfer function coefficients for damage and distress predictions that are specific to a pavement type.
  • Related to the separation of material coefficients topic, users can now input specific rutting ‘k’ coefficients for each individual AC layer when running the rutting performance model. Previously, only one set of ‘k’ coefficients could represent the entire AC thickness.
  • Invited users can now have their account policies set prior to accepting their invitation. This will make it easier for tenant administrators to manage new users.
  • The AASHTOWare PMED content site has been updated with new webinar slides and the local calibration guide.
  • Reliability predictions can no longer exceed 100% for unbonded concrete overlays.
  • Users can now rename custom group policies.
  • Several bugs were fixed including an issue where some designs were not showing the correct calibration tabs.