3,800 m2 (41,000 ft2)
Structural Engineering Consultant
Originally home to the Bank of Montreal dating from the 1930’s, the Old Bank of Montreal building is a heritage structure on historic Stephen Avenue, in downtown Calgary, that has undergone a full restoration and renovation to offer retail and modern Class A office space.
Renovated in the 1990’s to accommodate an electronics and music store, the building has been sitting vacant for the last several years raising questions to its structural adequacy to meet current gravity loading requirements. Entuitive was engaged to evaluate the structural condition of the building, and determine a strategy to repair and restore the floor structure to a load carrying capacity meeting a current office environment. The initial phase involved the restoration of the existing structure in order to reinstate and justify load carrying capacity within the building. It included the removal of dilapidated structure, the addition of new structure where deficient, and full scale load tests in areas where existing concrete quality was in question.
Following restoration of the existing structure, a complete renovation commenced, which included the addition of floor space over an existing atrium mezzanine, the raising of an existing concrete roof to provide more ceiling space, and the addition of a raised clearstory above the roof to allow additional natural light to enter. The ground and mezzanine floors are positioned for retail use while the third and fourth floors have been designed as office space.
Challenge: Extend the life and modernize a significant heritage building for commercial use.
Solution: Although difficult to assess an existing structure of this age due to significant revisions to building code criteria, analysis and design methodology, and construction practices, Entuitive developed a rational approach based on actual load test data to evaluate the structure and extend the life of this historic building.