Located in Courtenay, British Columbia, this project involved the construction of a critical municipal water infrastructure asset—a large-capacity post-tensioned concrete reservoir. Designed to serve the growing needs of the surrounding community, the structure is a tall, vertical water storage tank featuring robust engineering and long-term durability. The project required a high level of precision in both design and execution due to its height and structural complexity.

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The primary goal of this project was to increase the region’s potable water storage capacity to ensure stable and reliable service for residential, commercial, and emergency use. Specific objectives included building a structurally sound tank that could withstand internal pressure forces, environmental stressors, and seismic activity, all while maintaining a compact footprint in an urban setting.

Several key technologies and construction techniques were used to achieve the performance standards of this reservoir:

• Post-tensioned slipform concrete construction, which allows for continuous vertical forming while enhancing the tank’s structural integrity and resistance to cracking.
• Flat slab-on-grade foundation, providing stability and uniform load distribution on the site’s terrain.
• Geodesic aluminum dome roof, which ensures corrosion resistance, minimizes maintenance, and protects the water from external contaminants.
• Precise dimensional specifications, including a 12.0-meter internal diameter, 292mm wall thickness, and 26.3 meters in height, required high-level coordination and quality assurance throughout the build.

The finished structure significantly expanded local water storage capacity, reinforcing the region’s infrastructure for future demand. The reservoir meets modern engineering and environmental standards, providing a safe, clean, and secure water supply. Its efficient design and use of post-tensioned concrete also promise long service life with reduced maintenance needs.