Underground Transmission Line Design

Underground Transmission Line Design

April 23-24, 2024 | Online :: Central Time

Not all electrical transmission lines are designed the same. Overhead lines and underground transmission lines are siblings, yet their own individual entities with their own unique challenges.   This course will provide an in-depth overview of underground systems, pipe-less cable lines and technology, construction, and installation. This is the ideal course for engineers, or anyone, new to underground transmission projects that need a deeper level of understanding of the design process for underground transmission lines.  Register today, because through a mix of lecture and interactive discussions, participants will come away with a deeper understanding of what goes into the design of the underground transmission lines.  

Learning Outcomes

  • Review the steps and process in line routing
  • Identify the types of information needed from surveys and geotechnical information
  • Expand on the information needed to establish alignment with clearances, vaults and duct bank connections
  • List the criteria and considerations in cable pulling
  • Asses the civil design components of underground transmission
  • Review options for attaching lines to bridges when necessary
  • Discuss the components and details needed for ampacity calculations
  • Describe the types and calculations for bonding design and SVL sizing


Tuesday, April 23, 2024 : Central Time

8:45 – 9:00 a.m.
Log In and Welcome

12:00 – 12:30 p.m.
Lunch Break

9:00 a.m. – 5:00 p.m.
Course Timing


Routing Process for Underground Transmission Lines

    1. Overview
    2. Considerations
    3. Process

Survey and Geotech

    1. Types of survey
    2. SUE and various levels
    3. Geotech important considerations

Establishing Alignment

    1. Utility clearance
    2. Vault placements
    3. Duct Bank connections

Cable Pulling

    1. Input criteria
    2. Considerations and nomenclature
    3. Demo in Pull Planner

Civil Design for Underground Transmission Lines

    1. Duct bank design
    2. Installation methods and potential challenges
    3. Splice Vault design
    4. Backfills

Bridge Attachments

    1. Considerations
    2. Ampacity impacts

Ampacity Calculations

    1. CymCAP demo
    2. Cable construction
    3. Conductor types
    4. Limitations of CymCap
    5. Non-standard installations
    6. Understanding the calculation results


Wednesday, April 24, 2024 : Central Time

8:45 – 9:00 a.m.
Log In and Welcome

12:00 – 12:30 p.m.
Lunch Break

9:00 a.m. – 5:00 p.m.
Course Timing


Bonding Design and SVL Sizing

    1. Bonding types pros/cons
    2. Calculations for sheath voltage rise
    3. Calculated voltage and arrester sizing

Trenchless Design for Underground Transmission Lines

    1. Method
    2. Workspace
    3. Length
    4. Facility/feature being crossed
    5. TB 770

Commissioning Process of Underground Transmission Lines

    1. Types of tests
    2. Recommendations new cable vs. tie into old
    3. Different tests for different cable types
    4. AIS vs. GIS terminations vs. transition structure install

Coordinated Electrical and Civil Design

    1. Impacts on one another
    2. Optimized civil + Electrical design
    3. Field change flexibility
    4. Electrical considerations (EMF, induced voltage, impedance, charging current)

Procurement Underground Transmission Lines

    1. Specification development and critical items to capture
    2. Manufacturer testing and qualification
    3. Cable Cut lengths
    4. Transportation logistics

Risk Management/Best Practices

    1. Contracting strategies
    2. Contractor qualifications
    3. Construction inspection
    4. Managing contract seams


Nathan M. Rochel, PE, Project Engineer, Technical Manager, Burns & McDonnell

Mr. Rochel is an electrical engineer specializing in the design of underground transmission lines and technical management of the underground & submarine cables department. He has been involved in the design of underground transmission projects ranging from 5 kV through 500 kV. His experience includes all aspects of underground transmission design, including project development, routing, and feasibility, through detailed design, construction support, commissioning, and testing. Mr. Rochel’s experience in types of projects range from IOU transmission installations, developer interconnects, renewable installations (solar, wind, offshore wind), inside station connections, industrial installations, trenchless installations, generation ties, and others.

Nathan D. Scott, PE, Associate Project Engineer, Burns & McDonnell

Mr. Scott is an associate project engineer with over 17 years of transmission and distribution engineering experience. His primary responsibilities include project management, scope definition, project estimating, site evaluation, route analysis, feasibility studies, detailed design and engineering, cable sizing ampacity calculations, pulling calculations, construction drawings and specifications, and construction sequencing. Mr. Scott also has experience in both procurement and construction support, including field inspection during both civil installation as well as cable and accessory installation. In addition, he provides support for public involvement activities, including attending Open Houses. Mr. Scott has also served as an expert witness.

Kevin M. Riegel, PE, Associate Project Engineer, Burns & McDonnell

Mr. Riegel is a associate project engineer at Burns and McDonnell. His duties include providing civil engineering support as well as a lead transmission engineer for the planning and design of high voltage underground transmission lines. Mr. Riegel began his career as a civil engineer in January 2003. Prior to employment with Burns & McDonnell, Mr. Riegel was employed as a civil engineer in Kansas City, MO as a design engineer for formwork, shoring, and scaffolding for various projects in the Midwest.

Tyler R. McArthur, PE, ENV SP, Associate Civil Engineer, Burns & McDonnell

Tyler is a civil/structural engineer in the underground transmission group at Burns & McDonnell. His responsibilities include duct bank design, underground routing analysis, cable pulling tension calculations, duct bank construction estimates, and underground transmission line construction support. His work includes use of cable pull 3D design/analysis software packages and several in-house design and cost estimating programs. Besides working in the underground transmission group, Tyler has experience working in both the overhead transmission group and substation group. His design and field experience in these departments include foundation design, overhead transmission line modeling, oil containment design, stub angle retrofit design, reviewing tower fabrication drawings, and onsite drilled shaft inspection. His work includes use of PLS CADD software packages along with multiple structural software programs.


Online Delivery

We will be using Microsoft Teams to facilitate your participation in the upcoming event. You do not need to have an existing Teams account in order to participate in the broadcast – the course will play in your browser and you will have the option of using a microphone to speak with the room and ask questions, or type any questions in via the chat window and our on-site representative will relay your question to the instructor.

  • Microsoft recommends downloading and installing the Teams app if possible. You may also use the Edge browser or Chrome.
  • You will receive a separate email with a unique link to a personalized landing page which will include links to join all sessions of this event.
  • If you are using a microphone, please ensure that it is muted until such time as you need to ask a question.
  • The remote meeting connection will be open approximately 30 minutes before the start of the course. We encourage you to connect as early as possible in case you experience any unforeseen problems.


Please Note: This event is being conducted entirely online. All attendees will connect and attend from their computer, one connection per purchase. For details please see our FAQ

If you are unable to attend at the scheduled date and time, we make recordings available to all attendees for 7 days after the event


Underground Transmission Line Design

April 23-24, 2024 | Online
Individual attendee(s) - $ 1295.00 each

Volume pricing also available

Individual attendee tickets can be mixed with ticket packs for complete flexibility

Pack of 5 attendees - $ 5,180.00 (20% discount)
Pack of 10 attendees - $ 9,065.00 (30% discount)
Pack of 20 attendees - $ 15,540.00 (40% discount)

Your registration may be transferred to a member of your organization up to 24 hours in advance of the event. Cancellations must be received on or before March 22, 2024 in order to be refunded and will be subject to a US $195.00 processing fee per registrant. No refunds will be made after this date. Cancellations received after this date will create a credit of the tuition (less processing fee) good toward any other EUCI event. This credit will be good for six months from the cancellation date. In the event of non-attendance, all registration fees will be forfeited. In case of conference cancellation, EUCIs liability is limited to refund of the event registration fee only. For more information regarding administrative policies, such as complaints and refunds, please contact our offices at 303-770-8800




EUCI is accredited by the International Accreditors for Continuing Education and Training (IACET) and offers IACET CEUs for its learning events that comply with the ANSI/IACET Continuing Education and Training Standard. IACET is recognized internationally as a standard development organization and accrediting body that promotes quality of continuing education and training.

EUCI is authorized by IACET to offer 1.5 CEUs for this event

Requirements for Successful Completion of Program

Participants must log in each day and be in attendance for the entirety of the course to be eligible for continuing education credit.

Instructional Methods

Case studies, PowerPoint presentations, and group discussion will be used in this event.

Upon successful completion of this event, program participants interested in receiving CPE credits will receive a certificate of completion.

Course CPE Credits: 18.0
There is no prerequisite for this Course.
Program field of study: Specialized Knowledge
Program Level: Basic
Delivery Method: Group Internet Based
Advanced Preparation: None

CpeEUCI is registered with the National Association of State Boards of Accountancy (NASBA) as a sponsor of continuing professional education on the National Registry of CPE Sponsors. State boards of accountancy have final authority on the acceptance of individual courses for CPE credit. Complaints regarding registered sponsors may be submitted to the National Registry of CPE Sponsors through its web site: www.nasbaregistry.org