2.3MSF of Elegantly Undulating, Angled and Cantilevered Concrete in NYC

Ken McBryde
Sydney Architecture Studio, Sydney

The evolution and growth of cities and urban environments is a delicate balance between old and new. New structures and increased densification more often than not manifest themselves in isolated tower projects with little or no dialogue with the surrounding city. In recent years, however, there has been a shift, with large scale redevelopments changing the urban fabric of cities like New York. These developments include multiple towers interwoven with the city infrastructure while also layering in social and environmental aspects demonstrating a shift in the ways cities evolve.
This presentation will be a case study of Waterline Square, one such development in New York City. The project is a 2.3 MSF mixed use development with three tower projects. Perhaps the most elegant feature of the project is a new landscaped park and underground amenity space articulating all three buildings into one unified project. The double and triple height column free below grade spaces provided its own set of challenges with clear spans up to 60 ft, the complexity of which was amplified by the fact the heaviest loading in the project (fully landscaped park) was over these long spans. All 2.3MSF is cast in place concrete construction (up to 12ksi) and showcases unique structural solutions to address the extreme variation in floor plates, hundreds of columns shifting regularly up the structure, expansive column-free spaces at and below grade and all without introducing additional materials or construction methods.
Attendees will gain insight into the various structural challenges encountered in realizing the developments vision in the context of a unique and evolving approach to building in dense cities such as New York.

Accompanying PowerPoint Presentation

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