NAPA Webinar: AAPTP FAA P-401 Gradation Requirements: Research Findings, Performance Impacts, and Implementation Considerations
Wednesday, November 11, 2026
Time: 1:30 - 3:00 p.m. ET
Location: Virtual
Category: Educational, Events, Other Industry Related Events,
Add to my Google Calendar Add to Outlook CalendarThis webinar will provide an overview of findings from the AAPTP FAA P-401 aggregate gradation requirements study, including a summary of the study’s approach, key findings, proposed gradation revisions, and practical implementation considerations. Attendees will also be introduced to the predictive tools developed through the project to help assess the impacts of gradation changes on mixture volumetric properties and performance.
Key Takeaways
- Understand the key findings regarding the performance of mixtures with gradations outside current P-401 limits
- Review the proposed revisions to P-401 gradation requirements and the engineering rationale supporting them
- Learn how the project’s predictive models and decision-support tools can be used to evaluate gradation changes and their effects on mixture properties and performance