Construction Aspects of the Pinard-Hanmer 500-Kv Transmission Line

This paper describes construction aspects of the northern 228 miles of Ontario Hydro's new 437-mile 500-kv EHV (extra-high-voltage) bundle conductor transmission line. Because of rigid specifications and new design features, new construction practices had to be developed in many areas, particularly foundation construction, tower erection, and the tension stringing of a 4-conductor bundle.