LARGEST- Dome construction in the World
Posted by: 
Norfolk12
N 51° 30.101 E 000° 00.281
31U E 292115 N 5709870
THE o2 DOME previously named the Millenium Dome, at Greenwich,South
London.
Waymark Code: WM4479
Location: United Kingdom
Date Posted: 07/05/2008
Views: 97
The Dome structure is the largest domed structure in the world. Externally it appears as a large white marquee with twelve 100 m-high yellow support towers, one for each month of the year, or each hour of the clock face, representing the role played by Greenwich Mean Time. In plan view it is circular, 365 m in diameter — one metre for each day of the year — with scalloped edges. It has become one of the United Kingdom's most recognisable landmarks. It can easily be seen on aerial photographs of London. Its exterior is reminiscent of the Dome of Discovery built for the Festival of Britain in 1951.
The architect was Richard Rogers and the contractor was Sir Robert McAlpine. The building structure was engineered by Buro Happold, and the entire roof structure weighs less than the air contained within the building. Although referred to as a dome it is not strictly one as it is not self-supporting, but is a mast-supported, dome-shaped cable network.
The canopy is made of PTFE coated glass fibre fabric, a durable and weather-resistant plastic, and is 50 m high in the middle. Its symmetry is interrupted by a hole through which a ventilation shaft from the Blackwall Tunnel rises.
Apart from the dome itself, the project included the reclamation of the entire Greenwich Peninsula. The land was previously derelict and contaminated by toxic sludge from an earlier gasworks that operated from 1889 to 1985. The clean-up operation was seen by the then Deputy Prime Minister Michael Heseltine as an investment that would add a large area of useful land to the crowded capital. This was billed as part of a larger plan to regenerate a large, sparsely populated area to the east of London and south of the River Thames, an area initially called the East Thames Corridor but latterly marketed as the "Thames Gateway".
Type of documentation of superlative status: website
Location of coordinates: entrance
Web Site: [Web Link]
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