300 South Tryon

This 25-story, 689,000-square-foot sustainable office tower also features a 20-story on-site hotel. Both towers sit on top of a three-story podium with four levels of below-grade parking.



  • Charlotte, North Carolina, USA

Project Status

  • Completed in 2017

Integrated Solutions for Varied Foundations

The project required our structural engineers give special attention to below-grade design issues, owing to its location alongside a historic brick building and on a subgrade of variable elevation rock with poor soil in between. We worked with the team in the earliest phases of the project to integrate solutions for the deep basements and varied foundations.

Solutions included a secant pile basement wall system, and providing interchangeable foundation alternates (spread footings and piles) that could be used dependent on conditions uncovered during excavation at each support point.

The tower is aiming for LEED Gold certification.