TRB Webinar: Pavement Drainage Practices to Achieve Long Lived Pavements

TRB conducted a webinar on October 23, 2013 from 2:00 p.m.- 3:30 p.m. ET that will highlight TRB’s National Cooperative Highway Research Program (NCHRP) Research Results Digest 268: Performance of Pavement Subsurface Drainage, which provides information about the overall effectiveness of subsurface drainage on the performance of flexible and rigid pavements, focusing on permeable bases. Contact Reggie Gillum at RGillum@nas.edu for information about receiving a link to the recorded webinar.

This webinar will introduce reasons why proper drainage is important to ensure a high quality, long lived pavement and how extended pavement life and cost effectiveness can be achieved. In addition, the webinar will address construction practices that affect permeability as well as design considerations.

Webinar Presenters:

• Tom Yu, Federal Highway Administration
• Pavana Vennapusa, Iowa State University
• John Donahue, Missouri Department of Transportation

Moderated by: Maureen Jensen, Minnesota Department of Transportation

Webinar Outline:

• Performance of Pavement Subsurface Drainage
  • Overall effect of subsurface drainage on the performance of flexible and rigid pavements
• Field Assessment of Permeability of Granular Base/Sub-base Materials
  • Measuring permeability in-situ of materials such as recycled and reclaimed materials
  • How construction practices can affect permeability
  • How to incorporate these considerations into design
• Overview of 20 years of full width rock bases in Missouri
  • Specifications, construction practices and performance of permeable bases

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


Learning Objectives:

• To understand the role of proper drainage in ensuring high quality, long lived pavement
• To understand the effectiveness of permeable bases and lessons about their design and construction
• To explore options about measuring permeability

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Registration Information: 

There is no fee for employees of TRB sponsors who register using their work email address. In addition to employees of TRB sponsor organizations, the following are eligible to receive complimentary webinar registration:

• TRB and National Academies employees 
• Chairs of TRB standing committees, sections, or groups 
• Members of the media 
• Employees of tribal governments 
• Congressional staff members 

Other sites must pay $89 per site. View our pricing page for details.

After registering you will receive a confirmation email containing information about joining the webinar.


Professional Development Hour information:
A certificate for 1.5 Professional Development Hours (PDH) will be provided to Professional Engineers (PEs) who register and attend the webinar as an individual. For groups, only the person that registers and attends the session will receive a PDH certificate. 

Individuals registered as Florida PEs are required to email Reggie Gillum, RGillum@nas.edu, with their license number.

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

This webinar was developed in June 2013. TRB has met the standards and requirements of the Registered Continuing Education Program (RCEP). Credit earned on completion of this program will be reported to RCEP by TRB. Certificates of Completion will be issued to individuals who register for and attend the entire webinar session. Complaints about registered providers may be sent to RCEP, PO Box 1686, Clemson, SC, 29633. Website: www.RCEP.net. 

Registration questions? Contact Reggie Gillum at RGillum@nas.edu.