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300 South Tryon, Charlotte, North Carolina

WSP USA, formerly Halvorson and Partners, collaborated with architect LS3P to structure this 25-story, 689,000 square foot sustainable workplace office tower that also features a 20-story on-site hotel designed by Cooper Carry Architects. Both towers sit on top of a three-story podium and four levels of below grade parking. Located alongside a historic brick building and on a subgrade of variable elevation rock with poor soil between - the project warranted special focus on below grade design issues. We worked with the team in the earliest phases to integrate solutions for the deep basements and varied foundations. These 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. Among its completion, the tower will achieve LEED Gold Certification.

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