The CN Tower

The National Canada Tower.

The CN Tower Wallpaper.

       The CN tower opened to the public on June 26, 1976, although the official opening date was October 1, 1976, The construction costs of approximately C D N $ 63 million ($243 million in 2013 dollars) were repaid in fifteen years. Canadian National Railway sold that tower prior to taking the company private in 1995, when they decided to divest themselves of all operation not directly related to their core freight shipping businesses.

• Alternative=
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• Canada National tower.
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• Names=
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• Canada’s  National tower
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• Statue=
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• Complete.
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• Location=
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• Toronto, Ontario, Canada 43 38’33.36’’N
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• Floor count=
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• 147
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• Lifts/elevators=
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• 9

History.

       The idea of the CN tower originated in 1968 when the Canadian National Railway had a desire to build a large TV and radio communication platform to serve the Toronto area, as well as demonstrate the strength of Canadian industry and CN in particular. These plans evolved over the next few years, and the project became official in 1972. The tower would have been part of metro Center (see city place), a large development south of front street on the Railway Lands., large railway switching yard that was being made redundant by never yards outside the city.

       This was a fairly impressive engineering feat on its own, consisting of a large metal platform that raised itself on jacks at about 6 ((19.7 ft) per day as the concrete below set. Concrete was poured continuously by a tram of 1,532 people until February 22, 1974, during which it had already become the tallest structure in Canada, surpassing  the recently built In co Super stack, which was built using similar method. In total, the tower contains 40, 500 m (52,972 cu yd) of concrete, all of which was mixed on-site in order to ensure batch consistency.

Record Height.

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• Tallest in the world from 1976 to 2007.
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• Preceded by=
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• Ostan Kino Tower
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• Surpassed by=
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• Burj Khalifa
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• General information of CN Tower.
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• Type=
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• Mixed Use: observation, telecommunication, attraction, restaurant
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• Coordinates
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• 79 23’33.36’’W coordinates: 43 38’33.36’’N  79 23’13.56’’W
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• Construction started=
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• 1973
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• Completed=
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• 1976.

       The original plan for the tower envisioned a tripod consisting of three independent cylindrical ‘’pillars’’ linked at various heights by structural bridges. construction on the CN Tower began on February 6, 1973, with massive excavations at the tower base for the foundation.

As Toronto grew rapidly during the late 1960s and early 1970s, multiple skyscrapers were constructed in the downtown core, most notably First Canada Place.

       In August 1974, construction of the main level commenced. Using 45 hydraulic jacks attached to cables strung from a temporary steel crown anchored to the top of the tower, twelve giant steel and wooden bracket forms were slowly raised, ultimately taking about a week to crawl up to their final position.

       The tower was topped off on April 2, 1975, after 26 months of construction, officially capturing the height record from Moscow’s OSTAN Kino Tower, and bringing the total mass to 118,000 t (130,073 short tons; 116,136 long tons).

       Ned Baldwin, project architect with john Andrews, wrote at the time that ‘’All of the logistic with dictated the design of the lower accommodation has been upset, ‘’and that‘’ under such ludicrous circumstances Canada National would hardly have chosen this location to build. As the area around the tower was developed, particularly with the completion of the Metro Toronto Convention Center in 1984 and the Sky Dome in 1989 (renamed Rogers Center in 2005), the former railway land were redeveloped and the tower become the center of a newly developing entertainment area.

Opening.

       When the CN Tower opened in 1976, there were there three public observation points: the Sky Pod (then known as the space deck) that stands at 447 m (1,467 ft), the Indoor observation level (now named Indoor Lookout level) at 346 m (1,135 ft), and the Indoor observation terrace (at the same level as the glass floor) at 342 m (1,122 ft). one floor above the indoor observation level was the top of Toronto Restaurant, which completed a revolution once every 90 minutes, The first was a scene from the movie Highpoint, in which Robinson received $250, 000 for the stunt. The glass floor, at an elevation of 342 m (1,122 ft), opened to the public on June 26, 1994.

• Opening=
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• October 1, 1976
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• Cost=
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• C D N $ 63,000,000
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• Owner=
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• Canada lands company
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• Antenna spire=
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• 553.33 (1,815.4 ft)
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• Roof=
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• 457.2 m (1,500.0 ft)
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• Top floor=
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• 446.5 m (1,464.9 ft)

• On September 12, 2007, Burj Khalifa, then under construction, surpassed the CN Tower as the world’s tallest free-standing structure.

• In 2008, glass panels were installed in one of the CN tower elevators, which established a world record (346 m) for highest glass floor paneled elevator in the world.

• The CN tower is the tallest freestanding structure in the western Hemisphere.

       The CN tower can be seen from at least as far away as Kennedy street in Aurora, Ontario, approximately 40 km (25 mi) to the north, 60 km (37 mi) east of Toronto, in Oshawa, and from several points on the south shore of Lake Ontario, 48 km (30 mi) to the south in New York state in the united state. In 1995, the modern seven Wonders of the World by the American society of Civil Engineers. Its also belongs to the World federation of great tower, were it hold second-place ranking.

       As of 2013, there are only two other Freestanding Structures in the Western Hemisphere which exceed 500 m (1,640.4 ft) in height; the Willis Tower in Chicago, which stand at 527 m (1,729.0) when measured to its pinnacle; and the recently topped-out One World Trade Center in New York City, which has a pinnacle height of 541.33 m (1,776.0 ft), or approximately 12 m (39.4 ft) shorter then the CN Tower.