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May 9, 2014
Owner/developer: Marvin Road LLC
Project team: BPCI, general and concrete contractor; TGB Architects, architect; Shutler Consulting Engineers, structural engineer; Miles Sand and Gravel Co., ready-mix supplier
The Providence Medical Office Building at Hawks Prairie has 30 decorative colonnades around its exterior. The unique quality of these colonnades or “pilasters” is that they are concrete tilt panels.
The colonnades were originally intended to be steel framing. After analysis, it was determined that the desired look could be achieved at a better value using the concrete tilt method.
Each colonnade is 3 feet wide, 28 feet tall and 6.5 inches thick. They share a common footing with the building’s panels and are connected via embeds and welds. Installation required “bucking out” a small section of the tilt panel walls at each colonnade for an added cable connection.
While the colonnades were picked by the crane, the additional cable pulled the colonnade to its final position. The colonnades stand half an inch from the tilt panel walls.
The top of each colonnade interfaces a foam and acrylic cornice system that wraps the entire perimeter of the building. Many subtle architectural features (such as precast concrete sills, brick veneer pilasters, and stained concrete panel sections framed by reveal strips and the tilt-panel colonnades) create a building with strong architectural appeal, yet maintain the cost efficiency and durability of ready-mixed concrete tilt construction.