The light-weight deflectometer (LWD) has seen increased use in quality control and quality assurance testing. Pavement applications include general assessment of unbound layer stiffness and controlling the quality of compacted aggregate and soil layers. TRB will host a webinar on Thursday, February 23, 2023 from 1:00 PM to 2:30 PM Eastern that will share test set up, data analysis, and limitations of the LWD device. Presenters will share two case studies of conventional and non-conventional uses of LWDs and discuss any potential issues to ensure proper data collection and analysis.

This webinar is a follow on to the TRB Webinar: Ensuring Construction Quality Assurance with Light-Weight Deflectometers held on September 30, 2021.

This webinar is sponsored by TRB’s Standing Technical Committees on Mechanics and Drainage of Saturated and Unsaturated Geomaterials and Stabilization of Geomaterials and Recycled Materials.

Registration is free for employees of TRB sponsors as well as Titanium and Cobalt Global Affiliates. The registration rate for all other attendees is $100. Sign into MyTRB.org to view registration information. Contact Patrice Davenport to inquire about becoming a TRB sponsor or global affiliate organization.

A recording will be sent to all registrants after the webinar.

Webinar agenda and presenters

• Use of LWDs for quality control of backfill layers for airfield pavement repairs – Jami Lynn Rushing, S. Army Engineer Research and Development Center
• Multi-year experience with use of LWD as a quality assurance device for compaction – Niosha Afsharikia, WSP
• Question and answer session moderated by William Carruth, S. Army Engineer Research and Development Center

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:

• Understand the light-weight deflectometer’s use as a quality assurance test device and conventional and non-conventional applications
• Identify best practices for test set up and data analysis with the light-weight deflectometer test device

Professional Development Hours

Professional engineers (PEs) who register and attend the entire webinar as an individual will be awarded 1.5 Professional Development Hours (PDHs). TRB’s webinar program awards PDH credits only to the registered individual, and not to other members of a group that view the webinar together. To be eligible for the credits, individuals must remain signed in for the entire webinar, including for any question and answer session following the presentations.

Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board.

TRB will report credits earned to the Registered Continuing Education Program (RCEP). Complaints about registered providers may be sent to RCEP, 1015 15th Street, NW, 8th Floor, Washington, D.C., 20005.

Pre-registration is required. Once the webinar starts, you will be unable to register. Individuals that are registered for a webinar but do not receive their confirmation emails due to their organization’s internal firewalls should contact TRB Helpdesk for assistance in signing in.

View our FAQ page for more information.

Registration questions? Contact TRB webinar program.