Duke Energy

  • A 1.5-million-square-foot, 51-story office building that spans a full city block in Charlotte, North Carolina.
  • The scope also includes a one-million-square-foot, nine-level underground parking deck with 2,173 parking spaces.
  • A unitized curtainwall system adorns the exterior of the building.
  • The office tower itself consisted of a concrete tube-frame construction with pre-cast double-tee infill between core and perimeter. This is the tallest building in the world to use double-tees. The top five levels of the tower are structural steel.  
  • The office tower required two of the strongest tower cranes made along with a self-jacking concrete placing boom to complete the construction.
  • This project presented a challenge with the coordination of hoisting to support an overall site footprint of 130,000 square feet in addition to site logistics and a downtown location.
  • With multiple pieces of the project going on simultaneously, coordination of cranes, materials supply, and other deliveries were also complex.  As the site averaged between 1,000 and 2,000 yards of concrete placed each week, concrete delivery was especially delicate.  
  • The first high-rise office building to obtain LEED® CS v2.0 Platinum.
  • CMAA 2010 Best New Construction Over $100 Million Award
  • CMAA 2010 Dave Borchers Memorial Award
  • Siemens’ 2010 Smartest Building in America Award Winner 

Charlotte, NC

Wells Fargo | Charlotte, NC

Thompson, Ventulett, Stainback & Associates | Atlanta, GA