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Designed by the architect Costas Kondylis, the building is 861 feet (262 m) high and has 72 constructed floors (but lists 90 stories on elevator panels) with curtain wall facades of dark, bronze-tinted glass. [2] [3] The tower is rectangular in plan, measuring 77 by 144 feet (23 by 44 m) with a slenderness ratio of 11:1. [4]
The triplex apartment is located on floors 56, 57, and 58 of the Trump Tower in Manhattan. [1] The apartment is the residence of Trump, his wife Melania, and their son Barron. [2] [3] [4] The tower was their primary residence until October 2019.
One World Trade Center's steel structure topped out at the 94th physical story (numbered as floor 104), with a total height of the roof top at 1,368 feet (417 m), in August 2012. [51] [83] The tower's spire was then shipped from Quebec to New York in November 2012, [84] [85] following a series of delays. [85]
Additional elevators connect the 80th floor to the six floors above it, as the six extra floors were built after the original 80 stories were approved. [31] [102] The elevators were mechanically operated until 2011, when they were replaced with automatic elevators during the $550 million renovation of the building. [103]
One review of tall buildings suggests that residential towers may have 3.1 m (10 ft 2 in) floor height for apartments, while a commercial building may have floor height of 3.9 m (12 ft 9.5 in) for the storeys leased to tenants. In such tall buildings (60 or more storeys), there may be utility floors of greater height. [7]
The contractors had to complete a floor before they started erecting the floor above it. Concrete was more expensive in New York City than anywhere else in the United States, which raised the construction costs. [106] All the floors above the 20th used a roughly similar design, and each of these floors could be completed within two days.
To reach an odd-numbered floor from ground level, passengers must take an escalator to the upper deck of the lift. [40] There are 29 double-deck passenger elevators, but there are different sets that service certain floors of the towers, specifically two sets of six of these double-deck passenger elevators to floors 1–23 and 1–37 respectively.
The elevators in a skyscraper are not simply a necessary utility, like running water and electricity, but are in fact closely related to the design of the whole structure: a taller building requires more elevators to service the additional floors, but the elevator shafts consume valuable floor space.