This is a Tier 1 Blueprint / MegaStructure. 30 St Mary Axe, also known as the Gherkin and the Swiss Re Building, is a skyscraper in London's main financial district, the City of London, completed in December 2003 and opened on 28 April 2004. It is 180 metres (591 ft) tall, with 40 floors. Its erection symbolised the start of a new high-rise construction boom in London.
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| - 30 ST Mary Axe
- 30 St Mary Axe
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| - This is a Tier 1 Blueprint / MegaStructure. 30 St Mary Axe, also known as the Gherkin and the Swiss Re Building, is a skyscraper in London's main financial district, the City of London, completed in December 2003 and opened on 28 April 2004. It is 180 metres (591 ft) tall, with 40 floors. Its erection symbolised the start of a new high-rise construction boom in London.
- The Edwardian building which the 30 St. Mary Axe skyscraper replaced, the Baltic Exchange, was severely damaged by an IRA bomb blast in 1992. The decision was made for it to be demolished, and to be replaced with an entirely new building. The tower has two skins, the outer one provided with opening windows, so that on sunny days hot air rises naturally between the skins and out of the windows. This natural chimney effect reduces the need for air-conditioning for as much as 40 percent of the year.
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abstract
| - This is a Tier 1 Blueprint / MegaStructure. 30 St Mary Axe, also known as the Gherkin and the Swiss Re Building, is a skyscraper in London's main financial district, the City of London, completed in December 2003 and opened on 28 April 2004. It is 180 metres (591 ft) tall, with 40 floors. Its erection symbolised the start of a new high-rise construction boom in London.
- The Edwardian building which the 30 St. Mary Axe skyscraper replaced, the Baltic Exchange, was severely damaged by an IRA bomb blast in 1992. The decision was made for it to be demolished, and to be replaced with an entirely new building. Plans were made for 30 St. Mary Axe to rise 41 stories high, in a circular and "twisted" pattern shape like flowers cut through with six, five-story triangular atria or "sky gardens." Each floor plan rotates 5 degrees from the plan of the floor below, and the "sky gardens" rotate with them, bringing fresh air and daylight into the core of the skyscraper building. At the top of the tower, a highly theatrical, double-height restaurant is roofed with a conical glazed dome. The tower has two skins, the outer one provided with opening windows, so that on sunny days hot air rises naturally between the skins and out of the windows. This natural chimney effect reduces the need for air-conditioning for as much as 40 percent of the year.
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