The World Trade Center North Tower was the tallest building in the world on its completion in 1971. Structural engineers generally consider skyscrapers with a minimum 1:10 or 1:12 ratio (of the width of the building's base to its height) to be "slender." Slenderness is a proportion based on the width of the base to the height of the building. "Slenderness" is an engineering definition. The bottom row, of which three are topped out and completely clad are all in lower Manhattan, south of Chambers Street, with the exception of the last building, which will become the tallest building in Brooklyn.ĭesigned by thirteen different architectural firms in a wide range of styles from historical to avant-garde and clad in materials from limestone to all-glass curtain walls, the rendering of these towers underscore that the slenderness development strategy is the unifying characteristic of the new typology. The top row groups the best-known buildings near the southern end of Central Park and especially on the posh cross-town commercial 57th Street, nicknamed “Billionaires’ Row.” The middle row, which include four projects initiated before the 2008 banking crisis and recession, are located in central midtown and midtown south near Madison Square, as well as 35 Hudson Yards, which in recent renderings is marginally slender. The renderings of the 18 slender towers are organized loosely by neighborhood. Central Park is the gold standard, but other geographies also have great appeal if they can command climb to 600 to 800 feet or taller and command sweeping panoramas of the city. But in the new crop of super-slender towers, the value of views is clearly the driving force for the tower form. Many developers say that apartment buyers shop first for neighborhood, then views, then amenities. Bottom: 56 Leonard, 30 Park Place, 111 Murray Street, 125 Greenwich Street, 50 West Street, 9 DeKalb Ave.īoth prime neighborhoods and great views have added value in New York. Middle: 53W53rd, 100 E 53rd Street, Sky House, 45 E 22nd Street, One Madison, 35 Hudson Yards. Top: One57, 111 West 57th Street, 432 Park Avenue, 520 Park Avenue, Central Park Tower, 220 Central Park South. A tower can be very tall, but not slender, and it can be slender without being very tall. Slenderness is a proportion based on the width of the base to the height of the building. The defining characteristic of these new towers is not height, but slenderness. This new chart and the grid of images below updates the exhibition’s list and includes 18 slender towers that in May 2016 were either completed or in early stages of construction. The basic, yet complex principles of the economics, engineering, and design of this new type of super-slender towers were detailed in The Skyscraper Museum’s 2013/14 exhibition SKY HIGH & the Logic of Luxury, which is archived in full text and images here. These pencil-thin periscopes - all 50 to 90+ stories - use a development and design strategy of slenderness to pile their city-regulated maximum square feet of floor area (FAR) as high in the sky as possible to create luxury apartments defined by spectacular views. A new form in skyscraper history has evolved in New York over the past decade: the super-slim, ultra-luxury residential tower. NEW YORK'S SUPER-SLENDERS Click to enlarge and hover for IDs
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