West 57th in New York, New York. Rendering courtesy BIG&Glessner.
Thornton Tomasetti provided structural engineering services for the unique, 44-story, sloped building located between 57th and 58th streets along 12th Avenue in New York City. The triangular shape optimizes the number of units with views of the Hudson River while preserving the adjacent tower’s line of site.
The residential building contains 709 units, 20 percent of which are reserved for affordable housing. The building’s efficient structure of flat plate concrete below the 34th floor has embedded transfer girders within the slab to accommodate the façade setbacks at each floor. A steel structure completes the last 10 floors of the building, providing mechanical, window washing and façade support. The ground level has retail space as well a parking component, while the partial basement contains storage and back-of-house space. The western portion of the building, which is within the 100-year floodplain, has integral flood walls as well as mechanical units elevated above the floodplain. A 22,000-square-foot, 395-foot long interior courtyard at the third floor offers residents access to extensive green space.
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