Trenchless Technology

This course provides an introduction to trenchless technology, including its purpose and history, and explains the applications, permitting considerations, construction practices, and inspection guidelines. The development of this course was provided by Iowa DOT in partnership with TC3.

Various applications are covered including jack and bore, sliplining, pipe jacking, horizontal directional drilling (HDD), cured-in-place pipe (CIPP) lining for culvert rehab, lining with cementitious or polymer materials for pipe and manholes, moles (hole hammers), micro tunneling, tunnel boring machine (TBM), and tunnel liner plates.

This course contains four modules:

  1. Introduction to Trenchless Technology;
  2. Trenchless Technology Applications;
  3. Permits for Trenchless Projects; and
  4. Construction and Inspection of Trenchless Projects.

This course offers professional development hours (PDHs). You will see the PDHs on your course completion certificate, which also serves as documentation of your attendance. PDH requirements vary, therefore, it is up to you to determine whether or not this particular course qualifies under your State or board requirements.

Training level: This training is recommended for the Transportation Curriculum Coordination Council levels II, III, and IV.

Target audience:This course is ideal for individuals with new positions or needing a refresher in using and working with trenchless technology. This course also serves as an introduction for engineers that are not familiar with trenchless technology. Project members that are responsible for writing and submitting permits for trenchless technology on projects may also benefit from this course.

Learning outcomes: Upon completion of this course, participants will be able to:

  • Explain what trenchless technology is and when it is used;
  • Describe the evolution of trenchless technology;
  • Describe the different trenchless technology applications for new installations;
  • List the capabilities/limitations of different trenchless technology methods;
  • Identify which trenchless technology should be used in a given situation;
  • Explain site investigation goals, methods, and outcomes;
  • Describe basic requirements for permitting;
  • List best practices for completing permits for trenchless technology projects;
  • Describe general guidelines for trenchless technology construction;
  • Describe the trenchless construction inspection activities to be performed by the inspector and contractor;
  • List construction practices the inspector should be aware of for each trenchless application;
  • Describe the risks associated with trenchless technology projects; and
  • Explain the difference between plans and as-built drawings.

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