Tower design involves world-class challenges, especially when erecting specialized steel structures on Alaskan Arctic glaciers that never melt throughout the year. These steel towers, reaching heights of over 110m and with diameters of up to 3m, require precise transmission line design to ensure stability. Some structures had to implement very specialized rock anchor foundations tailored to withstand the tough geographical conditions. The tower erection process is executed by the two only Heli-crane helicopters in Canada.
The design requirements focused on the extreme local temperatures, fluctuating between -40 C in winter and 30 C in summer. We fabricated and delivered 789 specialized steel structures, totaling 14,133 individual steel sections, within nine months. This project showcases our robust capabilities in manufacturing, logistics, and project management, particularly in steel tower supply and transmission line design.
Extreme climate conditions and tough bedrock ground conditions necessitated world-class transmission line design and specialized steel structures. Following the failure of the existing Long Lake transmission line, T-STAC was directly awarded the Purchase Order for the rebuild line without a bidding process. The steel tower supply included towers that soared up to 140 meters tall and had a diameter of 4 meters. Additionally, the erection of the new towers, which were connected to the Brucejack Transmission Line, was accomplished using Heli-crane helicopters.