Client: BC Hydro
Location: British Columbia, Canada
Status: Completed, 2017 to 2019
Overview
The challenge. Clearance violations on a 500kV lattice-tower transmission line have no easy fix: the line is a backbone asset, extended outages are unacceptable, and any correction must be engineered against the full structural reality of towers that have stood for decades. BC Hydro needed remediation options it could weigh on cost and constructability without ever compromising code compliance.
Our approach. Our team assessed each affected span and built PLS-Tower models of the structures involved, so that every remediation option — raising existing structures, re-tensioning conductors — rested on detailed structural analysis rather than assumption. The deliverable was a full construction package presenting the viable options side by side, each one checked against safety and regulatory requirements, so the utility could choose with confidence rather than commission further study.
The outcome. BC Hydro received engineered, constructible solutions for every violation, with the analysis behind each option documented and defensible. The programme ran from 2017 to 2019 and established the working relationship that has since carried through the cell site program, the Fraser River crossing and the Farrel Creek study.
Services applied
- Clearance analysis
- Structural assessment
- PLS-Tower modelling
- Remediation design