August 31, 2020  —  September 27, 2020


Online - Course

Contact Hours



A rapidly growing segment of pipe projects include trenchless technology. Jacking projects are less disruptive to the traveling public, communities, utilities and businesses. Trenchless installations save time, money, and improve roadway safety. Understanding this construction process can provide valuable insight into the trenchless process, and how it can be used not only for new construction but also as a replacement of failing culverts. Trenchless culvert replacement incorporates the concept of jacking pipe under existing roadways and consuming the existing pipe while increasing hydraulic capacity. As our nation’s infrastructure approaches the end of its service life, jacking procedures are a valuable option worth considering.

Modules will be released on Mondays on a weekly basis beginning with a 30-minute live zoom session from 4:30pm to 5:00pm.  Independent online work will include a recorded lecture, quiz, and homework assignment. You will have 7 days to review the lecture and complete the weekly assignments. The instructor will be available by email and phone for questions and comments during the class and will be interacting with students as needed. The 4-week class will take approximately 6-8 hours to complete over the 4-week period.


Trenchless Technology and the Basics of Designing a Trenchless Project

  • An introduction to the world of trenchless technology
  • Basic design considerations
  • Jacking forces – options to minimize the axial load on the pipe

Trenchless Methods

  • Overview of trenchless pipe installation options
  • Discussion on Jacking
  • Discussion on Microtunneling
  • Discussion on Tunnel Boring Machines

Microtunneling On a Curve

  • Considerations for designing a curved alignment
  • Guidance equipment for curved pushes
  • Accuracy expectations – a real life example

Trenchless Culvert Replacement

  • Discussion of the options for repairing/replacing a failing culvert
  • Value engineering and trenchless replacement
  • Construction steps to success


Trygve Hoff

Trygve Hoff, PE, is the Northeast Region Engineer for the American Concrete Pipe Association (ACPA). Tryg graduated with a BS in Civil Engineering from The Ohio State University and his professional experience ranges from environmental consulting in Ohio, to architectural engineering in beautiful Lake Tahoe, California. Tryg has been promoting resilient infrastructure with the ACPA since 2012.

Who Should Attend

This class was developed as an introduction to trenchless pipe & culvert installation. We will cover many of the keys to a successful trenchless project. The content is intended for installers and design engineers but will begin from an entry level that will allow curious new comers to explore the world of underground construction.

Registration and Payment

The following registration fees cover the session, all course materials and meals:

Local Government: $50.00
State/Federal: $85.00
Private Industry: $200.00

Click here for UVA TTA's general registration information, cancellation policy, and refund policy. UVA TTA accepts the following credit cards: American Express, VISA, MasterCard, and Discover. Credit card information cannot be taken over the phone. Alternatively, after registering you can print out a voucher to send in with your payment. After you have completed the transaction you will receive an automatically generated email confirming registration and payment if applicable. Final confirmation and instructions will be sent out during the week prior to the class date.

Don't have access to a computer?
to get a paper registration form (PDF). Print it out, complete it, and email, mail or FAX it to our office following the instructions on the form. Include your check or government purchase order with your registration form. Please note that emailed or faxed-in registration forms will be considered as a "provisional booking" until payment is received. For more information, call our office at (434) 982-2897, fax at (434) 982-2856 or email uva-tta@virginia.edu