Line routing and structure spotting
Optimized PLS-CADD structure spotting that balances span length, structure cost and terrain to deliver an efficient line profile.
Transmission
Transmission line design from 63 kV to 500 kV
Full overhead transmission engineering, from PLS-CADD line modeling and structure spotting to lattice tower and steel pole design, sealed for construction by a senior Professional Engineer.
Overview
Lines engineered for safety, reliability and cost
Overhead transmission lines carry the highest voltages on the grid, so every span has to be right. MADI Consulting delivers complete transmission line design built in the Power Line Systems suite, the same software relied on by utilities across North America. We model the full line in PLS-CADD, design the structures in PLS-TOWER and PLS-POLE, and verify clearances against the codes that govern your jurisdiction.
Because a senior P.Eng. leads the work, you get engineering judgment on structure selection, span optimization and load cases, not just a set of drawings. The result is a transmission line package that passes utility review and builds cleanly in the field.
Voltage classes delivered
- Distribution sub-transmission
- 63 kV
- 69 kV
- 138 kV
- 230 kV
- 500 kV
Capabilities
What a transmission package includes
Conductor and sag-tension design
Conductor selection, sag-tension calculation and stringing charts across all governing weather load cases.
Structure and foundation loads
Lattice tower and steel pole loading in PLS-TOWER and PLS-POLE, with reactions for foundation and anchor design.
Code and clearance compliance
Ground, building and crossing clearances verified to CSA C22.3 No. 1, NESC and California GO 95.
Crossing and corridor packages
Engineered crossing packages for railways, highways, waterways and existing utility corridors.
Stamped deliverables
Plan and profile drawings, structure schedules and calculation packages sealed by a Professional Engineer.
How we work
A clear path from data to sealed drawings
- 01 Scope and data review
We review survey, LiDAR, geotechnical and existing-line data to set up an accurate PLS-CADD terrain and feature model.
- 02 Modeling and analysis
Structures are spotted, conductors strung and every weather case analyzed for clearance, loading and uplift.
- 03 Structure and foundation design
Lattice towers and poles are checked in PLS-TOWER and PLS-POLE, producing foundation reactions and anchor loads.
- 04 Sealed deliverables
Plan and profile sheets, schedules and calculations are issued for review and sealed for construction.
Have a transmission line to design?
Send us the route, voltage and any survey data you have. A senior P.Eng. will scope it with you.