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Vanity Height
Vanity height is defined by the Council on Tall Buildings and Urban Habitat (CTBUH) as the height difference between a skyscraper's pinnacle and the highest usable floor (usually observatory, office, restaurant, retail or hotel/residential). Because the CTBUH ranks the world's tallest buildings by height to pinnacle, a number of buildings appear higher in the rankings than they otherwise would due to extremely long spires. The controversy began when the Petronas Towers were named as the world's tallest buildings in 1998, despite having a roof 63.4 m (208 ft) lower than that of the Willis Tower. The current world's tallest building, Burj Khalifa, is officially 828 meters tall, but its highest usable floor is 585m above ground. Therefore, its vanity height is defined as 244 meters, or 29% of the building's total height. Without this vanity height the Burj Khalifa would still be the tallest building in the world, but only by 2 meters. The next potential tallest building, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of Vanity Height
Comparison or comparing is the act of evaluating two or more things by determining the relevant, comparable characteristics of each thing, and then determining which characteristics of each are similar to the other, which are different, and to what degree. Where characteristics are different, the differences may then be evaluated to determine which thing is best suited for a particular purpose. The description of similarities and differences found between the two things is also called a comparison. Comparison can take many distinct forms, varying by field: To compare things, they must have characteristics that are similar enough in relevant ways to merit comparison. If two things are too different to compare in a useful way, an attempt to compare them is colloquially referred to in English as "comparing apples and oranges." Comparison is widely used in society, in science and in the arts. General usage Comparison is a natural activity, which even animals engage in when deci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 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. 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. Ranking tall buildings The CTBUH ranks the height of buildings using three different methods: #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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World's Tallest Buildings
The world's tallest human-made structure is the Burj Khalifa in Dubai (of the United Arab Emirates). The building gained the official title of "tallest building in the world" and the tallest self-supported structure at its opening on January 9, 2010. Burj Khalifa was developed by Emaar properties, designed by Skidmore, Owings and Merrill and built by BESIX, Samsung Construction and Arabtec. The second-tallest self-supporting structure and the tallest tower in the world is the Tokyo Skytree. The tallest guyed structure is the KVLY-TV mast at 1987 feet. The Council on Tall Buildings and Urban Habitat, an organization that certifies buildings as the "World's Tallest", recognizes a building only if at least 49% of its height is made up of floor plates containing habitable floor area. Structures that do not meet this criterion, such as the CN Tower, are defined as "towers". There are dozens of radio and television broadcasting towers which measure over 600 metres (about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spire
A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are typically made of stonework or brickwork, or else of timber structures with Cladding (construction), metal cladding, ceramic tile, ceramic tiling, roof shingles, or Slate roof, slates on the exterior. Since towers supporting spires are usually square, square-plan spires emerge directly from the tower's walls, but octagonal spires are either built for a pyramidal transition section called a ''Broach spire, broach'' at the spire's base, or else freed spaces around the tower's summit for decorative elements like pinnacles. The former solution is known as a ''broach spire''. Small or short spires are known as ''spikes'', ''spirelets'', or ''flèche (architecture), flèches''. Etymology This sense of the word spire is attested in English since ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petronas Towers
The Petronas Towers, also known as the Petronas Twin Towers or KLCC Twin Towers, (Malay: ''Menara Berkembar Petronas'') are 88-storey supertall skyscrapers in Kuala Lumpur, Malaysia, standing at . From 1998 to 2003, they were officially designated as the tallest buildings in the world until they were surpassed by the 2004 completion of the Taipei 101. The Petronas Towers are the world's tallest twin skyscrapers and remained as the tallest buildings in Malaysia until 2019, when they were surpassed by the The Exchange 106. The Petronas Towers are a major landmark of Kuala Lumpur, along with the nearby Kuala Lumpur Tower and Merdeka 118, and are visible in many places across the city. History and architecture The Petronas Towers' structural system is a tube in tube design, invented by architect Fazlur Rahman Khan. Applying a tube-structure for extreme tall buildings is a common phenomenon. The 88-floor towers are constructed largely of reinforced concrete, with a steel and gl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willis Tower
The Willis Tower (originally the Sears Tower) is a 108-story, skyscraper in the Loop community area of Chicago in Illinois, United States. Designed by architect Bruce Graham and engineer Fazlur Rahman Khan of Skidmore, Owings & Merrill (SOM), it opened in 1973 as the world's tallest building, a title that it held for nearly 25 years. It is currently the third-tallest building in the Western Hemisphere, as well as the 23rd-tallest in the world. Each year, more than 1.7 million people visit the Skydeck observation deck, the highest in the United States, making it one of Chicago's most popular tourist destinations. The building occupies a site bounded by Franklin Street, Jackson Boulevard, Wacker Drive, and Adams Street. Graham and Khan designed the building as nine square "tubes", clustered in a 3×3 matrix; seven of the tubes set back at upper floors. The tower has 108 stories as counted by standard methods, though the building's owners count the main roof as 109 and the mec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burj Khalifa
The Burj Khalifa (; ar, برج خليفة, , Khalifa Tower), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. It is known for being the world’s tallest building. With a total height of 829.8 m (2,722 ft, or just over half a mile) and a roof height (excluding antenna, but including a 242.6 m spire) of , the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009, supplanting Taipei 101, the previous holder of that status. Construction of the Burj Khalifa began in 2004, with the exterior completed five years later in 2009. The primary structure is reinforced concrete and some of the structural steel for the building originated from the Palace of the Republic in East Berlin, the former East German parliament. The building was opened in 2010 as part of a new development called Downtown Dubai. It was designed to be the centerpiece of large-scale, mixed-use development. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jeddah Tower
Jeddah Tower ( ar, برج جدة), previously known as Kingdom Tower (), is a skyscraper construction project currently on hold. Located on the north side of Jeddah, Saudi Arabia, it is planned to be the first tall building, and the centrepiece and first phase of a development and tourist attraction known as Jeddah Economic City. There was steady progress, but in January 2018, building owner JEC halted structural concrete work with the tower about one-third completed due to labor issues with a contractor following the 2017–2019 Saudi Arabian purge. The design, created by American architect Adrian Smith, who also designed the Burj Khalifa, incorporates many unique structural and aesthetic features. The creator and leader of the project is Saudi Arabian prince Al-Waleed bin Talal, a grandson of Ibn Saud, and nephew of the Kings of Saudi Arabia after Ibn Saud. Al-Waleed is the chairman of Kingdom Holding Company (KHC), which is a partner in the Jeddah Economic Company (JE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of The World's Tallest Buildings
The tallest building in the world, as of , is the Burj Khalifa. The title of " world's tallest building" has been borne by various buildings, such as the Lincoln Cathedral, the Empire State Building and the original World Trade Center. Before the modern skyscraper era, between 1311 and 1884, the tallest buildings and structures were mostly Christian churches and cathedrals. Before the 13th century, the tallest buildings in the world cannot be conclusively determined. For instance, the Lighthouse of Alexandria (completed about 280 BC) has been estimated to have been tall, but its true height is not known. For thousands of years, the Great Pyramid in Egypt was the tallest ''structure'' in the world until Lincoln Cathedral of 1311, but the Great Pyramid is not considered a building since it is not habitable. Similarly, the Eiffel Tower was the world's tallest structure from 1889, when it was built, but not the tallest building. The skyscraper was invented in Chicago in 1884 when th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Tower
Radio masts and towers are typically tall structures designed to support antennas for telecommunications and broadcasting, including television. There are two main types: guyed and self-supporting structures. They are among the tallest human-made structures. Masts are often named after the broadcasting organizations that originally built them or currently use them. In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna. Terminology The terms "mast" and "tower" are often used interchangeably. However, in structural engineering terms, a tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guys. Broadcast engineers in the UK use the same terminology. A mast is a ground-based or rooftop structure that supports antennas at a height where they can satisfactorily send or receive radio waves. Typical masts are of steel lattice or tubular steel construction. Masts themselves play no part in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Tallest Buildings
This list of tallest buildings includes skyscrapers with continuously occupiable floors and a height of at least . Nonbuilding structure, Non-building structures, such as towers, are not included in this list (for these, see ''List of tallest buildings and structures''). History Historically, the world's tallest man-made structure was the Great Pyramid of Giza in Egypt, which held the position for over 3800 years until the construction of Lincoln Cathedral in 1311. The Strasbourg Cathedral in France, completed in 1439, was the world's tallest building until 1874. The first skyscraper was pioneered in Chicago with the Home Insurance Building in 1885. The United States would hold the position of the world's tallest building throughout the 20th century until 1998, when the Petronas Towers were completed. Since then, two other buildings have gained the title: Taipei 101 in 2004 and Burj Khalifa in 2010. Since the beginning of the 21st century, the Middle East, China, and South ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skyscrapers
A skyscraper is a tall continuously habitable building having multiple floors. Modern sources currently define skyscrapers as being at least or in height, though there is no universally accepted definition. Skyscrapers are very tall high-rise buildings. Historically, the term first referred to buildings with between 10 and 20 stories when these types of buildings began to be constructed in the 1880s. Skyscrapers may host offices, hotels, residential spaces, and retail spaces. One common feature of skyscrapers is having a steel frame that supports curtain walls. These curtain walls either bear on the framework below or are suspended from the framework above, rather than resting on load-bearing walls of conventional construction. Some early skyscrapers have a steel frame that enables the construction of load-bearing walls taller than of those made of reinforced concrete. Modern skyscrapers' walls are not load-bearing, and most skyscrapers are characterised by large surface ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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