NOTE: This online course is taken through NHI's new Library Management System, Blackboard. Visit their NHI Blackboard LMS Kickoff page for more information.

Instructions on how to create an account with Blackboard and locate this training will be included in your confirmation email and can be found on your UMTC profile's registration portal page.

Before preservation treatments can be applied, localized repairs may be necessary for a pavement's base or subbase. The Base and Subbase Stabilization and Repair course gives participants the knowledge they need to determine if the base or subbase must be stabilized or repaired, to select the appropriate stabilization and repair methods for a given project, and to ensure the repair is performed properly.

This training reviews the failures and distresses that indicate structural deterioration exists in a roadway. The course also covers project selection and trade-off considerations through example roadway projects that give participants the opportunity to evaluate a roadway and determine if it is a candidate for reconstruction or repair. Participants can use this information, as well as guidance on design and construction, to make sound project planning decisions.

This training was developed as part of the Maintenance Training Series (134109). The series consists of 11 Self-Directed trainings (SDTs) on various maintenance operations topics, ranging from the conceptual (pavement preservation) to the practical (management of underground storage tanks). The trainings included in the Series are listed below and each will take approximately 1 hour to complete:

• Pavement Preservation Program (134109A)
• Shaping and Shoulders (134109B)
• Thin HMA Overlays and Leveling (134109C)
• Base and Subbase Stabilization and Repair (134109D)
• Roadway Drainage (134109E)
• Outdoor Advertising and Litter Control (134109F)
• Roadside Vegetation Management (134109G)
• Weather-related Operations (134109H)
• Basics of Work Zone Traffic Control (134109I)
• Underground Storage Tanks (134109J)
• Cultural and Historic Preservation (134109K)

Learning Outcomes:

Upon completion of the course, participants will be able to:

• Identify the symptoms of a localized base or subbase problem, which require greater depth of stabilization and repair than a hot-mix asphalt (HMA) or Portland Cement Concrete (PCC) surface repair patch
• Determine when it is appropriate to employ base or subbase repair on a preventive maintenance project
• Identify the most appropriate repair methods if base or subbase failures are identified in a project

Target Audience:

This course was designed for State, regional, and county personnel who manage operations programs and deal with oversight and quality assurance over broader geographic areas. The target audience is also involved with handling materials, scheduling, budgeting and planning.

*Take a look at NHI’s How-To Guides for tips & tricks on using their system.

Direct any NHI website or training questions or issues to the NHI HELP/FAQ page or contact NHI directly via NHICustomerService@dot.gov or 1-877-558-6873.

Disclaimer: Accommodations for Disabilities: UMTC endeavors to provide an inclusive learning environment for all. If you require special services or arrangements to fully participate in this workshop, please email Stephanie Cottrell  or call 413-800-2655 at least 14 days prior to the event. Such services are provided free of charge.