At more than 2,600 feet high, the Burj Dubai (right) can still lay claim to the title of world's tallest building—although like all other super-tall buildings, its exact height will have to be recalculated now that the Council on Tall Buildings and Urban Habitat (CTBUH) announced a change to its height criteria.
CTBUH is the international body that arbitrates on tall building height and determines the title of “The World's Tallest Building.” The organization announced that its old rule of measuring height from the sidewalk outside the main entrance does not sufficiently recognize multiuse tall buildings that often have several different entrances at different levels. The new criteria calls for measuring building height from the level of the lowest significant, open-air pedestrian entrance.
“Beginning in 2007, with the knowledge that Burj Dubai would be significantly taller than any structure ever built, the CTBUH Height Committee met to review the criteria by which we recognize and rank the height of buildings,” said Peter Weismantle, chair of the CTBUH Height Committee and director of supertall building technology at Adrian Smith + Gordon Gill Architecture in Chicago. “As one might guess, with the committee being made up of architects, engineers, contractors, developers, building owners, and academics, a variety of opinions and views were expressed. The resulting revisions two years later reflect a general consensus of the committee in recognizing the most recent trends in tall building development around the world.”
In response to the changing designs and forms of tall buildings, the Height Committee also elected to discard its previous “Height to Roof” category. “The roof category just doesn't make sense anymore,” said CTBUH executive director Antony Wood. “In the era of the flat-topped modernist tower, a clearly defined roof could usually be identified, but in today's tall building world—which is increasingly adopting elaborate forms, spires, parapets, and other features at the top of the building—it is becoming difficult to determine a 'roof' at all, even less so to measure to it.”
The new rules haven't dramatically altered the ranking of the world's tallest buildings, although the Jin Mao Tower in Shanghai (1,381 feet high) dropped to seventh tallest, having been bumped by the Trump International Hotel & Tower in Chicago (1,389 feet high), which is now the world's sixth-tallest building.
Related Stories
| Jul 17, 2014
A new, vibrant waterfront for the capital
Plans to improve Washington D.C.'s Potomac River waterfront by Maine Ave. have been discussed for years. Finally, The Wharf has started its first phase of construction.
| Jul 17, 2014
A harmful trade-off many U.S. green buildings make
The Urban Green Council addresses a concern that many "green" buildings in the U.S. have: poor insulation.
| Jul 8, 2014
Frank Lloyd Wright's posthumous gas station opens in Buffalo
Eighty-seven years after Frank Lloyd Wright designed an ornamental gas station for the city of Buffalo, the structure has been built and opened to the public—inside an auto museum.
| Jul 8, 2014
Lost in the Museum: Bjarke Ingels' maze will make you look up and around
The maze, located in the National Building Museum, is a precursor to an exhibit showcasing some of BIG's projects. To navigate the maze, people must look up.
| Jul 7, 2014
7 emerging design trends in brick buildings
From wild architectural shapes to unique color blends and pattern arrangements, these projects demonstrate the design possibilities of brick.
| Jul 7, 2014
'Solar orchid' pods will serve as floating restaurants, retail shops in Singapore's harbor [slideshow]
In an attempt to reunite the nation of Singapore with its harbor, SPARK Architects has designed the "solar orchid"—self-contained, solar-powered pods that mimic traditional hawkers.
| Jul 7, 2014
A climate-controlled city is Dubai's newest colossal project
To add to Dubai's already impressive portfolio of world's tallest tower and world's largest natural flower garden, Dubai Holding has plans to build the world's largest climate-controlled city.
| Jul 3, 2014
Gehry edits Canadian skyscraper plan to be 'more Toronto'
After being criticized for the original tower complex, architect Frank Gehry unveils a new design that is more subtle, and "more Toronto."
| Jul 2, 2014
Emerging trends in commercial flooring
Rectangular tiles, digital graphic applications, the resurgence of terrazzo, and product transparency headline today’s commercial flooring trends.
| Jul 1, 2014
Peter Zumthor's LA art museum plan modified with bridge-like section across main thoroughfare
After his design drew concerns about potential damage to LA's La Brea Tar Pits, Peter Zumthor has dramatically revised his concept for the Los Angeles Museum of Art.