The building’s form was shaped by analysis of the climate. The tower faces south, curving towards the sun to take advantage of daylight and heat, while maximizing the perimeter for cellular offices with views of the Rocky Mountains.

By turning the convex façade into the prevailing wind, the structural loading is minimized thus reducing the amount of steel required for the inherently efficient diagrid system. Each triangulated section of the structure spans six storeys, providing superior structural efficiency, while helping to visually break down the scale of the building. At the time of completion, it was the first time a triangular diagrid has been applied to a curved skyscraper in North America.

Photo of The Bow
  • Project Details

    Location
    Calgary, Alberta
    Client
    Matthews Southwest Developments Ltd.
    Status
    Complete, 2013
    Size
    2,000,000 sq.ft. (185,800 sq.m.)
    Scope

    Architecture, Interior Design

    Design Architect: Foster + Partners
    Executive Architect: Zeidler

    Awards
    Calgary Mayor’s Urban Design Award, 2013
    Council on Tall Buildings and Urban Habitat – Best Tall Building in the Americas, 2013
    Emporis – Skyscraper Award, 4th Place, 2012
    Canadian Institute of Steel Construction – National Award, 2012
    Alberta Steel Design – Awards of Excellence, 2012
    Glass Magazine Awards – Most Innovative Energy Efficient Glass Project (Commercial, Retail, Fabrication), 2012
    Alberta Chapter American Concrete Institute – Awards of Excellence, 2011
    Canadian Institute of Steel Construction – Ontario Awards, Award of Excellence, 2011
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