Summary
Working beneath suspended loads remains one of the most critical safety hazards in transmission line construction. This paper presents an engineered solution developed to eliminate this risk during lattice tower erection. The system introduces a coupling and guiding device that enables tower sections to be aligned and positively locked into position without workers being positioned beneath a suspended load. Through iterative mechanical design, finite element analysis (FEA), and prototype testing, including a 1:2-scale 3D-printed proof of concept, the mechanism was verified for both functionality and constructability. Compared with previously proposed systems, the device achieves a true mechanically interlocked condition, avoids interference with splice joint assembly, protects tower coatings through controlled contact interfaces, and allows straightforward removal and reuse following joint completion. It is presently being trialled on site with a new 500 kV double circuit line being constructed in
Read more Read lessNew South Wales, Australia. The paper also reviews alternative mitigations for the risks of working below suspended loads during tower assembly and describes the limitations of existing guiding and coupling systems.
The design optimisation process is described, and the outcomes of collaborative consultation with designers, constructors, and asset owners are discussed. Broader applicability to transmission projects across the renewable energy transition and implications for future tower forms are examined.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B2_10324_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Australia |
| Study committees | |
| File size | 767 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
WILLIAMS Anne - Aurecon, Australia; GARWOOD Benjamin - Aurecon, Australia; OLEWCZYNSKI Grzogorz - Gateway Energy, Australia
Keywords
