Many state departments of transportation (DOTs) utilize contractor test data in the acceptance process for construction materials. TRB hosted a webinar on Thursday, June 3, 2021 from 1:00-2:30 PM Eastern that determined how to validate this data with independent test results in order to comply with federal regulations. Presenters identified appropriate statistical approaches and provide guidelines for applications of testing procedures. They also addressed common concerns such as sample size, the risk of incorrect acceptance decisions, and pay adjustments.

This webinar was organized by the TRB Standing Technical Committees on Quality Assurance Management, and Asphalt Pavement Construction and Rehabilitation.

The slides are linked in the meeting materials below. Click here to view the recording.

Webinar agenda and presenters

1. Procedures for validating contractor test data: Adam Hand, University of Nevada, Reno
2. Other validation procedures historically used by State DOTs: Mohamed Nimeri, King County International Airport
3. Proposed guide specification: Randy West, National Center for Asphalt Technology, Auburn University
4. Question and answer session: Mark Brum, Massachusetts DOT

The first 60 minutes of the webinar will be for presentations and the final 30 minutes will be reserved for audience questions.

Learning Objectives

At the end of this webinar, participants will be able to:

1. Evaluate procedures used by state DOTs to validate contractor data
2. Identify risk areas that may lead to incorrect acceptance and payment decisions

Professional Development Hours

Professional Development Hours (PDHs) earned on completion of this program were reported to the Registered Continuing Education Program (RCEP). Certificates of Completion are issued to all participants via the RCEP.net online system. Complaints about registered providers may be addressed to RCEP, 1015 15th Street, NW, 8th Fl., Washington, DC, 20005.