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Tower

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CN Tower (the world's tallest) in Toronto, Ontario, Canada.
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The Sears Tower, in Chicago, Illinois.
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The Eiffel Tower in Paris.
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El Faro towers in Buenos Aires, Argentina one of the tallest towers in the city
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Shukhov Tower in Moscow, Russia.


Towers are tall human-made structures, always (and usually much) taller than they are wide. Towers are generally built to take advantage of their height, and can stand alone or as part of a larger structure. Examples of the various uses of towers include: Skyscrapers are often not classified as towers, although most have the same design and structure of towers. In the United Kingdom, tall domestic buildings are referred to as tower blocks. In the United States, the now-destroyed World Trade Center had the nickname the Twin Towers, a name shared with the Petronas Twin Towers in Kuala Lumpur.

The term "tower" is also sometimes used to refer to firefighting equipment with an extremely tall ladder designed for use in firefighting/rescue operations involving high-rise buildings.

History

Probably the oldest tower still standing is the Leaning Tower of Pisa in Pisa, Italy built from 1173 until 1372. The oldest towers in the United States are the Milwaukee City Hall, built in 1895 in Milwaukee, Wisconsin and the Woolworth Building, completed in 1913 in New York City.

Etymology

Old English torr is from Latin turris via Old French tor. The Latin term together with Greek τύρσις was loaned from a pre-Indo-European Mediterranean language, connected with the Illyrian toponym Βου-δοργίς. With the Lydian toponyms Τύρρα, Τύρσα, it has been connected with the ethnonym Τυρρήνιοι as well as with Tusci (from *Turs-ci), the Greek and Latin names for the Etruscans (Kretschmer Glotta 22, 110ff.)

See also

skyscraper is a very tall, continuously habitable building. There is no official definition or a precise cutoff height above which a building may clearly be classified as a skyscraper.
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control tower, or more specifically an air traffic control tower (ATCT), is the name of the air traffic control unit responsible for movements around an airport, and is also the name of the building from which the unit operates.
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fire lookout tower, fire tower or lookout tower, provides housing and protection for a person known as a "fire lookout" whose duty it is to search for fire in the wilderness.
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Targeting towers use a special device to ensure an antenna's stability when strong wind blows.

This system is based on the geometrical properties of the parallelogram. 3 vertical rods are used to maintain the top platform horizontal when the tower bends under the wind effect.
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defensive wall is a fortification used to defend a city or settlement from potential aggressors. In ancient to modern times, they were used to enclose settlements. Generally, these are referred to as city walls or town walls
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siege tower (or in the Middle Ages a belfry[1]) is a specialized siege engine, constructed to protect assailants and ladders while approaching the defensive walls of a fortification.
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This article is about Storage Silos. For other types of silos, see Silo.


Storage silos are structures for storing bulk materials.
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water tower or elevated water tank is a very large tank constructed for the purpose of holding a supply of water at a height sufficient to pressurize a water supply system.
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A drilling rig is a machine which creates holes (usually called boreholes) and/or shafts in the ground. Drilling rigs can be massive structures housing equipment used to drill water wells, oil wells, or natural gas extraction wells or they can be small enough to be moved
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Ski jumping is a sport in which skiers go down an inrun with a take-off ramp (the jump), attempting to go as far as possible. In addition to the length that skiers jump, judges give points for style. The skis used for ski jumping are wide and long (240 to 270 cm).
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Radio masts and towers are, typically, tall structures designed to support antennas (also known as aerials in the UK) for telecommunications and broadcasting, including television. They are among the tallest man-made structures.
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lighthouse is a tower building or framework sending out light from a system of lamps and lenses or, in older times, from a fire. Lighthouses are used to mark dangerous coastlines, hazardous shoals, safe entries to harbors and can also assist in aerial navigation.
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Minarets (Arabic manara (lighthouse) منارة, but more usually مئذنة) are distinctive architectural features of Islamic mosques.
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Bell Tower is an office tower in Edmonton, Canada. It stands at 130 metres (426 feet) or 31 stories tall and was completed in 1982. Tenants include Bell Canada, Bishop & McKenzie LLP, & Great-West Life Assurance.
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clock tower is a tower built with one or more (often four) clock faces.The clock tower is usually part of a church or municipal building such as a town hall, but many clock towers are free-standing.

The mechanism inside the tower is known as a turret clock.
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A weather beacon is a beacon that indicates the weather forecast in a code of colored or flashing lights. Often, a short poem or jingle accompanies the code to make it easier to remember.
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This article is concerned with a particular type of suspension bridge, the suspended-deck type. For an index to the several types see suspension bridge types.


A suspension bridge
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A cable-stayed bridge is a bridge that consists of one or more columns (normally referred to as towers or pylons), with cables supporting the bridge deck. There are two major classes of cable-stayed bridges, differentiated by how the cables are connected to the
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electricity pylon or transmission tower is a tall, almost always steel lattice structure used to support overhead electricity conductors for electric power transmission.
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Aerial Tramway Support Pillar (ATSP) is a pylon-like construction bearing the cable(s) of an aerial tramway. They are usually built from steel in a framework construction, but there are a few concrete or tubular steel exceptions.
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A launch tower is constructed on the launch pad of an unguided rocket for the purpose of guiding the rocket until it is fast enough for aerodynamic stabilization to take effect. For the launch of self-guided rockets a launch tower is unnecessary.
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service tower is a moving tower, usually on rails, which is used to raise or assemble a rocket on its launch pad. After the rocket has been assembled, the tower is driven away to clear space for the launch.
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A supply tower (sometimes erroniously called a launch tower) is constructed on the launch pad of a rocket to facilitate fueling and loading cargo into the craft. A supply tower also usually includes an elevator which allows maintenance to be performed and, in the case of a manned
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Scaffolding is a temporary framework used to support people and material in the construction or repair of buildings and other large structures. It is usually a modular system of metal pipes (termed tubes in Britain), although it can be made out of other materials.
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wind turbine is a machine that converts the kinetic energy in wind into mechanical energy. If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine is usually called a windmill.
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measurement tower is a free standing tower or a removed mast, which carries measuring instruments with meteorological instruments such as thermometers and wind velocity measurers.
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A Tower telescope is a telescope with a large refraction length at which the tube is installed inside a tower. Tower telescopes are mainly used for examinations of the sun.

Examples


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Solar thermal energy is a technology for harnessing solar energy for practical applications from solar heating to electrical power generation. Solar thermal collectors, such as solar hot water panels, are commonly used to generate solar hot water for domestic and light industrial
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Cooling towers are evaporative coolers used for cooling water or other working medium to near the ambient wet-bulb air temperature. Cooling towers use evaporation of water to reject heat from processes such as cooling the circulating water used in oil refineries, chemical plants,
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chimneying, see Climbing technique.
For the Chimneys novels of Agatha Christie, see The Secret of Chimneys and The Seven Dials Mystery.


A chimney
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