STRUCTURAL OPTION
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Construction:
The main delivery method for this project is a construction manager at risk with a negotiated contract of approximately $22 million. Clancy + Theys Construction was involved early-on during the design phase to help facilitate coordination and prepare for a fast-track construction schedule of just over one year. Excavation began in early December 2007, and by January 2008 the test piles were in place. The building is projected for a January 2009 delivery.
Space limitations of the building site require that all construction activities are maintained essentially within the footprint of the building. Construction material storage is limited to a small area around the perimeter, with a slight encroachment on York Street to the south of the building. A tower crane is positioned within one of the main mechanical shafts, and the building is built around it. Once the last floor is poured, another crane will be brought in to dismantle the tower crane.
Concrete floors are poured in a West-East sequence, with 3 separate pours. Form bracing is kept in place to accelerate the schedule and continue construction vertically while the concrete is curing below. Concrete columns and shear walls are poured with each floor. Exterior wall systems are installed on the lower floors, while upper floors are being poured, also to accelerate construction.