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Resource Documents

 

Data Collection


 

Database


 

Computed Parameters


Computed parameters are engineering parameters or summary statistics derived from the raw LTPP data, e.g., IRI (derived from longitudinal profile data), various rut indices (derived from transverse profile data), or backcalculated moduli (derived from pavement deflection data and supplemented by pavement cross-section information. The availability of computed parameters will expedite and improve the efficiency of many future analysis projects.

 

Sources:


  • AASHTO - AASHTO Publications Department, 1-800-231-3475.

  • LTPP Customer Support Services - ltppinfo@dot.gov; (202) 493-3035.

  • R&T Report Center - 9701 Philadelphia Court, Unit Q, Lanham, MD 20706; Phone: (301) 577-0818, Fax: (301) 577-1421.

  • NTIS - National Technical Information Services, 5285 Port Royal Road, Springfield, VA 22161; (703) 605-6000. Include the PB number in the request.

  • TRB Bookstore - Transportation Research Board Bookstore, http://www.nationalacademies.org/trb/bookstore/; (202) 334-3214.

 

 

Office of Infrastructure R&D Links

» Office of Infrastructure R&D
» Infrastructure R&D Program
»Long-Term Bridge
  Performance Program

»Long-Term Pavement
  Performance Program
» Infrastructure R&D Experts
» Infrastructure R&D Laboratories
» Infrastructure R&D Projects
» Infrastructure R&D Publications
» Infrastructure R&D Topics

 

LTPP Email Distribution List

» Contact LTPP Customer Support Service Center at ltppinfo@dot.gov if you would like to be added to our email distribution list for LTPP Newsletters and other announcements.

 

FHWA Pavement Links

» Design
» Construction
» Preservation
» Maintenance
» Management
» Rehabilitation

 

More Information

 

Contacts

» Aramis Lopez
202-493-3145
E-mail Aramis
 
» Customer Service 202-493-3035
E-mail:LTPPinfo@dot.gov