The tallest building on our year-end construction countdown is 270 Park Avenue, JPMorgan Chase‘s 1,388-foot supertall headquarters in Midtown East. Designed by Lord Norman Foster of Foster + Partners and developed by Tishman Speyer, the 70-story skyscraper will yield 2.5 million square feet of office space and accommodate 15,000 employees, and will become the tallest building in New York powered completely by hydroelectric energy. NYC Constructors is the general contractor for the property, which occupies a full city block bound by East 48th Street to the north, East 47th Street to the south, Park Avenue to the east, and Madison Avenue to the west.
The steel superstructure has continued to rise steadily since our last update in early August, passing the first of its four setbacks. The first complete diamond of the signature diagrid structural pattern is now visible on the eastern and western elevations. Construction should reach the halfway point in the coming weeks, and the gradual reduction in size of subsequent office and amenity floors should further speed progress as the tower ascends.
More floors have also been fireproofed, and metal clips have been installed around the edges of the first several levels above the cantilevering base in preparation for the start of façade installation, which could begin sometime this winter.
The following renderings from DBOX showcase the completed look of 270 Park Avenue and its diagrid design. Steel columns will rise the full height of the northern and southern elevations, further emphasizing the skyscraper’s impressive verticality. A flat roof parapet caps the superstructure, and previous renderings depict the top two tiers illuminated at nighttime.
The narrow base features massive fanning columns that rise into the diagrid and vertical columns of the tower above, giving the building a streamlined structural expressionist flair.
The diagonal columns will be left exposed within the lobby, framing the multiple elevator vestibules lining West 47th and West 48th Streets and presenting a clear view between the avenues.
Based on the pace of progress, 270 Park Avenue could potentially top out in late 2023 to early 2024, with full completion likely occurring sometime in 2025.
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Source: news.google.com
