Council on Tall Buildings and Urban Habitat

The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A non-profit organization[5] based at the Monroe Building in the city of Chicago, Illinois, United States, the CTBUH announces the title of "The World's Tallest Building" and is widely considered to be an authority on the official height of tall buildings.[6][7][8][9][10] Its stated mission is to study and report "on all aspects of the planning, design, and construction of tall buildings." The Council was founded at Lehigh University in 1969 by Lynn S. Beedle, where its office remained until October 2003 when it moved to the Illinois Institute of Technology in Chicago.[11]

Council on Tall Buildings
and Urban Habitat
AbbreviationCTBUH
Formation1969 (1969)
FounderLynn S. Beedle[1]
TypeNon-profit
PurposeStudies and reports on all aspects of tall buildings and urban design[2]
HeadquartersChicago, Illinois, United States
Region served
International
Membership
Over 450,000 individuals[3]
CTBUH Chair
Steve Watts[4] of alinea Consulting
Websitewww.ctbuh.org

Ranking tall buildings
See also: List of tallest buildings and structures

The CTBUH ranks the height of buildings using three different methods:[12]

  1. Height to architectural top: This is the main criterion under which the CTBUH ranks the height of buildings. Heights are measured from the level of the lowest, significant, open-air, pedestrian entrance to the top of the building, inclusive of spires but excluding items such as flagpoles and antennae.
  2. Highest occupied floor: Height to the floor level of the highest floor that is occupied by residents, workers or other building users on a consistent basis.
  3. Height to tip: Height to the highest point of the building, including antennae, flagpoles, and technical equipment.

A category measuring to the top of the roof was removed from the ranking criteria in November 2009.[13] This is because flat-topped skyscrapers are not as common in the modern era as skyscrapers with intricate spire designs and parapet features atop their roofs, making it more difficult to define the roof of a building.

The CTBUH insist that a building should only be added to the official tallest list when it is (i) topped out structurally and architecturally, (ii) fully clad, and (iii) open for business, or at least partially open. This became the CTBUH official definition of a building's "completion".[14]

The CTBUH maintains an extensive database (named The Skyscraper Center) of the tallest buildings in the world, organized by various categories. Buildings under construction are also included, although not ranked until completion. The CTBUH also produces an annual list of the ten tallest buildings completed in that particular year. Topping the 2008 list was the 492-metre (1,614 ft) Shanghai World Financial Center in Shanghai, the then tallest building in the world according to the criteria of highest occupied floor, and home to the world's highest observation deck. Second on the 2008 list was the 363-metre (1,191 ft) Almas Tower in Dubai, third was the Minsheng Bank Building in Wuhan which stands at 331 metres (1,086 ft), whilst fourth was The Address Downtown Burj Dubai (306 metres (1,004 ft)). All in all, six of the ten tallest buildings completed in 2008 are located in Asia, three in the Middle East and one in North America.

Events

The CTBUH also hosts annual conferences and a World Congress every three to five years. The most recent World Congress was held in Shanghai between 19 and 21 September 2012.[15] The next World Congress will be held in Chicago between 28 October and 2 November 2019.[16] The CTBUH also bestows Tall Building Awards each year, with four regional awards to the Americas, Europe, Africa and the Middle East, and Asia and Australasia. Among these four regional awards, one is given the "Best Tall Building Award Overall." There are also two lifetime achievement awards. Starting in 2010, these awards are presented at a symposium and dinner held on the Illinois Institute of Technology's campus.[17] In 2012 the CTBUH added two new awards for Innovation and Performance.[18]

Publications

In addition to the monthly newsletter and daily updated global news archive, the CTBUH publishes a quarterly CTBUH Journal. The Journal includes peer-reviewed technical papers, in-depth project case studies,[19] book reviews,[20] interviews with prominent persons in the tall building industry,[21] and much more.

The CTBUH also publishes guidebooks, reference manuals, and monographs related to the tall building industry. In 2006 it published the book 101 of the World's Tallest Buildings in conjunction with author and CTBUH member Georges Binder, a reference to 101 of the world's tallest skyscrapers. It includes photos, plans, details on architects, engineers and stakeholders, and comprehensive technical data on each building. Since 2008 it has published a Best Tall Buildings book to accompany that year's awards.[22]

Awards
Main article: CTBUH Skyscraper Award
The 2014 winner of the CTBUH Skyscraper Award, One Central Park in Sydney, Australia

The CTBUH grants several awards every year.

Best Tall Building Overall Award

Research

The CTBUH works with institutions of higher-education from around the world in researching projects related to tall building design.

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See also

References
  1. "Council History". Council on Tall Buildings and Urban Habitat. Archived from the original on 2009-03-31.
  2. "About the CTBUH". Council on Tall Buildings and Urban Habitat. Archived from the original on 2012-05-10. Retrieved 2012-04-30.
  3. "CTBUH Membership". Archived from the original on 31 March 2009. Retrieved 30 March 2012.
  4. "CTBUH Chair: Steve Watts". Retrieved 9 January 2020.
  5. "Council releases list of Ten Tallest Building Projects for 2006". Council on Tall Buildings and Urban Habits. 15 March 2006. Archived from the original on 2013-10-12.
  6. "Design change could jeopardize WTC becoming nation's tallest building". CNN. Retrieved 11 May 2012.
  7. Brown, Eliot (30 April 2012). "Why New York's Tallest Doesn't Measure Up". The Wall Street Journal. Retrieved 1 May 2012.
  8. "Dubai tops residential skyscrapers". Retrieved 30 April 2012.
  9. "What's the Hemisphere's Tallest Residential Building? (Hint: It's Not Here)". Retrieved 30 April 2012.
  10. Dunlap, David W. (9 May 2012). "World Trade Center's Symbolic 1,776-Foot Height Is at Stake in a Redesign". The New York Times. Retrieved 9 May 2012.
  11. "Council History". Council on Tall Buildings and Urban Habitat. Archived from the original on 2012-05-04. Retrieved 2012-04-30.
  12. "CTBUH Height Criteria". CTBUH. Archived from the original on 2010-12-27. Retrieved 2014-08-24.
  13. "CTBUH changes height criteria, Burj Dubai height increases". Council on Tall Buildings and Urban Habitat. 17 November 2009. Archived from the original on 5 January 2018. Retrieved 18 November 2009.
  14. Gerometta, Marshall. "Height: The History of Measuring Tall Buildings". Council on Tall Buildings and Urban Habitat. Archived from the original on 11 June 2011. Retrieved 9 December 2011.
  15. "Asia Ascending: CTBUH 2012 World Congress". Council on Tall Buildings and Urban Habitat. Archived from the original on 7 May 2012. Retrieved 18 May 2012.
  16. "Shanghai 2014". Ctbuh.org. Retrieved 2014-01-09.
  17. "Awards 2011 Symposium". Council on Tall Buildings and Urban Habitat. Archived from the original on 6 October 2014. Retrieved 18 May 2012.
  18. "CTBUH Awards Criteria". Council on Tall Buildings and Urban Habitat. Archived from the original on 6 October 2014. Retrieved 18 May 2012.
  19. "CTBUH Journal Case Studies". Council on Tall Buildings and Urban Habitat. Archived from the original on 4 October 2014. Retrieved 18 May 2012.
  20. "CTBUH Reviews". Council on Tall Buildings and Urban Habitat. Archived from the original on 4 October 2014. Retrieved 18 May 2012.
  21. "CTBUH Interviews". Council on Tall Buildings and Urban Habitat. Archived from the original on 6 October 2014. Retrieved 18 May 2012.
  22. "Awards Book". Council on Tall Buildings and Urban Habitat. Archived from the original on 14 February 2014. Retrieved 18 May 2012.
  23. "2007 Best Tall Building - The Beetham Hilton Tower". Council for Tall Buildings and Urban Habitat. Archived from the original on 2018-08-29. Retrieved 2013-03-01.
  24. "Burj Khalifa won "Global Icon" Award". Council on Tall Buildings And Urban Habitate. Archived from the original on 2012-11-20. Retrieved 2010-11-02.
  25. "CTBUH Names One Central Park "Best Tall Building Worldwide" for 2014". Council on Tall Buildings And Urban Habitat. Archived from the original on 2015-09-23. Retrieved 2014-11-19.
  26. "CTBUH Annual Awards". Retrieved 4 November 2016.
  27. "CTBUH Names 2018 Best Tall Building Worldwide, Among 9 Other Award Winners! | 2018 Tall + Urban Innovation Conference". Retrieved 2019-01-24.

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