Tower design is of world-class difficulty, towers are erected on Alaskan Arctic glacier which never melts throughout the year. Steel pole structures of over 110m high with very large diameters of up to 3m. Some structures had to utilize very specialized rock anchor foundations designed to fit the tough geographical conditions. Tower erection done by the two only Heli-crane helicopters in Canada.
Design requirement revolved around the extreme local temperatures, which fluctuates between -40 C during winter and 30 C during summer. 789 steel structures, totalling 14,133 individual steel sections, were fabricated and delivered within nine months. This project demonstrates our strong manufacturing, logistics, and project management capacities.
Extreme climate conditions and tough bedrock ground conditions also required world-class difficulty design. The existing Long Lake transmission line failed and T-STAC was directly given the Purchase Order for the rebuild line without bidding. Towers were up to 140 meters tall and 4 meters in diameter. Connected to the Brucejack Transmission Line, erection was also done by Heli-crane helicopters.