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Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).
Comcast Building
30 Rockefeller Plaza, 30 Rock, The Slab, GE Building, RCA Building
Building
Completed
1933
office
steel
259.1 m / 850 ft
70
60
7.1 m/s
195,095 m² / 2,099,985 ft²
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Construction Start
Completed
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
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Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.
The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Rockefeller Center Historical Building and Urban Habitat Tour
28 October 2015 - Event
Panel Handles Mean, Green Questions at Architect @ Work in China
3 July 2015 - Event
18 October 2016 | New York City
CTBUH Video Interview – James Parakh
James Parakh of the City of Toronto Planning Department is interviewed by Chris Bentley during the 2016 CTBUH China Conference. James discusses the design elements...
30 Rockefeller Center is an American Art Deco skyscraper that forms the centerpiece of Rockefeller Center in Manhattan. The observation deck on 30 Rockefeller Center is built to resemble the deck of an ocean liner offering one of the best panoramic city views. It is the longtime home to NBC Studios originating as radio studios and since be converted to television studios.
18 October 2016 | New York City
CTBUH Video Interview – James Parakh
James Parakh of the City of Toronto Planning Department is interviewed by Chris Bentley during the 2016 CTBUH China Conference. James discusses the design elements...
18 October 2016 | New York City
The Space Between: Urban Spaces Surrounding Tall Buildings
This presentation was intended to introduce the upcoming CTBUH technical guide titled "The Space Between," which investigates the importance of publicly accessible spaces surrounding tall...
18 September 2014 | New York City
Urban Density and the Porous High Rise: The Integration of the Tall Building in the City
September 18, 2014. Shanghai, China. James von Klemperer from Kohn Pedersen Fox Associates PC presents at the 2014 Shanghai Conference closing plenary on "Urban Density...
28 October 2015
CTBUH 2015 delegates toured the Rockefeller Center which the tour predominantly focused on discovering what happens “backstage” at one of the most famous tall building complexes.
3 July 2015
As part of its role as a strategic partner of the Architect @ Work China Conference in Shanghai, CTBUH hosted a panel discussion entitled “Greening the Vertical Habitat.”
21 November 2014
Plans for the 2015 Conference in New York are now well underway, beginning with an initial meeting of the Steering Committee at the Bank of America Tower Nov. 18.
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