At its completion in 2009, this distinctive 92-level structure made its mark on the Chicago skyline – standing taller than any other steel-reinforced concrete building in the Western Hemisphere. Designed by Skidmore, Owings and Merrill, the tower's uniquely shaped setbacks enable it to related artfully to its neighbors, which include the historic Wrigley Building and Marina City.
Concrete contractor James McHugh Construction formed Trump's massive foundation in one continuous 24-hour pour, believed to be the largest single placement of self-consolidating concrete (SCC) in North America. Prairie delivered more than 4,700 cubic yards of high-strength SCC during the mat pour – more than 500 truckloads – monitoring each batch for consistency and quality.
Placing high-performance concrete at tremendous heights posed substantial challenges, especially in the winter months. Working with experts at SOM and McHugh, Prairie developed unique mixes that would not only pump smoothly through specially installed slicklines, but also achieve the fast setting time needed to keep the job moving, whatever the weather. In all, the structure incorporates 8 custom SCC mixes designed to meet these tough requirements while delivering the extreme strength (between 10,000 and 16,000 psi) and modulus of elasticity (between 6,200 and 7,200 ksi) needed at transition levels.
Trump Tower was named among the Top 10 Skyscrapers in the World by Emporis in 2009.
Location: 401 North Wabash Avenue, Chicago, Illinois
Size: 1,362 feet high with 2.6 million square feet of hotel, living, retail and restaurant space on 92 levels
Architects: Skidmore, Owings and Merrill, LLC, Chicago
General Contractor: Bovis Lend Lease, Chicago
Concrete Contractor: James McHugh Construction, Chicago
Concrete Delivered: 194,000 cubic yards, including 8 unique SCC mixes formulated exclusively for this project