Council on Tall Buildings and Urban Habitat
|Council on Tall Buildings and Urban Habitat|
|Purpose/focus||Studies and reports on all aspects of tall buildings and urban design|
|Headquarters||Chicago, United States|
|Membership||Over 450,000 individuals|
|CTBUH Chair||Timothy Johnson of NBBJ|
The Council on Tall Buildings and Urban Habitat (CTBUH) is an international body in the field of tall buildings and sustainable urban design. A not-for-profit organization based at the Illinois Institute of Technology in the city of Chicago, Illinois, United States, the CTBUH announces the title of 'The World's Tallest Building' and is an authority on the official height of tall buildings. 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, where its office remained until October 2003, when it moved to the Illinois Institute of Technology in Chicago.
Ranking tall buildings
The CTBUH ranks the height of buildings using three different methods:
- Height to architectural top of the building. 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 flag poles or antennae.
- To highest occupied floor: Height to the floor of the highest occupied floor of the building.
- To tip of spire/antenna: Height to the tip of spire, pinnacle, antenna, mast or flag pole.
A category measuring to the top of the roof was removed from the ranking criteria in November 2009. 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 a roof on a building.
The CTBUH maintains an extensive database 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.
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. The next World Congress will be held in Shanghai between 16 and 19 September 2014. 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. In 2012 the CTBUH added two new awards for Innovation and Performance.
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, book reviews, interviews with prominent persons in the tall building industry, 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.
- 2012 - Best Tall Buildings 2012
- 2012 - CTBUH 9th World Congress Proceedings
- 2012 - Outrigger Design Guide
- 2012 - Natural Ventilation Guide
- 2011 - Best Tall Buildings 2011
- 2010 - Best Tall Buildings 2010
- 2010 - Tall Buildings: The 2010 CTBUH Reference Guide
- 2009 - Best Tall Buildings 2009
- 2008 - Best Tall Buildings 2008
- 2006 - 101 of the World's Tallest Buildings
- 2004 - Catalyst for Skyscraper Revolution
The CTBUH grants several awards every year. See: CTBUH Skyscraper Award
Best Tall Building Overall Award
- 2007: Beetham Tower, Manchester, UK
- 2008: Shanghai World Financial Center, Shanghai, China
- 2009: Linked Hybrid, Beijing, China
- 2010: Broadcasting Place, Leeds, UK.
- 2010: Global Icon award, Burj Khalifa is the first recipient of this award announced on 25 October 2010., Dubai, UAE.
- 2011: KfW Westarkade, Frankfurt, Germany.
- 2012: Doha Tower, Doha, Qatar.
The CTBUH works with institutions of higher-education from around the world in researching projects related to tall building design.
- "About the CTBUH". Council on Tall Buildings and Urban Habitat.
- "CTBUH Membership". Retrieved 30 March 2012.
- "CTBUH Chair: Tim Johnson". Retrieved 30 March 2012.
- "2011 Skyscraper Trends". Retrieved 30 March 2012.
- "Design change could jeopardize WTC becoming nation's tallest building". CNN. Retrieved 11 May 2012.
- Brown, Eliot (30 April 2012). "Why New York’s Tallest Doesn’t Measure Up". The Wall Street Journal. Retrieved 1 May 2012.
- "Dubai tops residential skyscrapers". Retrieved 30 April 2012.
- "What’s the Hemisphere’s Tallest Residential Building? (Hint: It’s Not Here)". Retrieved 30 April 2012.
- 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.
- "Council History". Council on Tall Buildings and Urban Habitat.
- "CTBUH changes height criteria, Burj Dubai height increases". Council on Tall Buildings and Urban Habitat. 17 November 2009. Retrieved 18 November 2009.
- "Asia Ascending: CTBUH 2012 World Congress". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "Awards 2011 Symposium". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "CTBUH Awards Criteria". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "CTBUH Journal Case Studies". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "CTBUH Reviews". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "CTBUH Interviews". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "Awards Book". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "CTBUH Books". Council on Tall Buildings and Urban Habitat. Retrieved 18 May 2012.
- "2007 Best Tall Building - The Beetham Hilton Tower". Council for Tall Buildings and Urban Habitat. Retrieved 2013-03-01.
- "Burj Khalifa won "Global Icon" Award". Council on Tall Buildings And Urban Habitate. Retrieved 2010-11-02.