For this project, seele has been appointed to carry out the fabrication and erection of three free-form roof structures in steel and for the design, fabrication and installation of the aluminium-glass skin above the structural steelwork. The roof over the train hall is formed by four 16m wide curving barrel vaults that cover a total area of about 3,000sqm. Restaurants and retail will surround a hall with an area of 1,044sqm at the midblock entrances, underneath the smaller of the project’s glass roofs. The third roof structure, the Farley Skylight, has a surface of approx. 390sqm and a lower inside micrometer. The new roof structures join up with the existing steel structure and consist of a gridshell of welded steel T-sections with tensioned cables. Separate aluminium-and-glass elements are fitted into the gridshell structure. A total of 3,384 insulating glass units and 670t of steel are required for this structure.
Header image: © Empire State Development / SOM, Methanoia