Verification of Gyration Levels in the Ndesign Table

The objective of this project is to verify through a series of field project evaluations that the gyration levels in the Ndesign table in American Association of State Highway and Transportation Officials (AASHTO) TP4 are correct for the stated project traffic levels and to modify the levels as necessary.


  • English


  • Status: Completed
  • Contract Numbers:

    Project 9-09(1)

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Harrigan, Edward

  • Performing Organizations:

    Auburn University

    National Center for Asphalt Technology
    310 Sanford Hall
    Auburn, Alabama  United States  36849-5131
  • Principal Investigators:

    Brown, E

  • Start Date: 20000203
  • Expected Completion Date: 0
  • Actual Completion Date: 20060930
  • Source Data: RiP Project 4460

Subject/Index Terms

Filing Info

  • Accession Number: 01549326
  • Record Type: Research project
  • Source Agency: National Cooperative Highway Research Program
  • Contract Numbers: Project 9-09(1)
  • Files: RiP
  • Created Date: Dec 31 2014 1:01AM