Friday, February 7, 2014

The Shard_London Bridge Tower.

The Shard_London Bridge Tower.

The Shard  also referred to as the Shard of Glass, Shard London Bridge and formerly London Bridge Tower, is an 87-storey skyscraper in London that forms part of the London Bridge Quarter development. The Shard's construction began in March 2009; it was topped out on 30 March 2012 and inaugurated on 5 July 2012. Practical completion was achieved in November 2012. Its privately operated observation deck, the View from the Shard, opened to the public on 1 February 2013.
Standing approximately 306 metres (1,004 ft) high, the Shard is currently the tallest building in the European Union. It is the second-tallest free-standing structure in the United Kingdom, after the concrete tower at the Emley Moor transmitting station. The glass-clad pyramidal tower has 72 habitable floors, with a viewing gallery and open-air observation deck – the UK's highest – on the 72nd floor, at a height of 244.3 metres (802 ft). It was designed by the Italian architect Renzo Piano and replaced Southwark Towers, a 24-storey office block built on the site in Southwark in 1975. The Shard was developed by Sellar Property on behalf of LBQ Ltd and is jointly owned by Sellar Property and the State of Qatar.
Renzo Piano, the project's architect, designed the Shard as a spire-like sculpture emerging from the River Thames. He was inspired by the railway lines next to the site, the London spires depicted by the 18th-century Venetian painter Canaletto, and the masts of sailing ships. Piano's design met criticism from English Heritage, who claimed the building would be "a shard of glass through the heart of historic London", giving the building its name, The Shard. Piano considered the slender, spire-like form of the tower a positive addition to the London skyline, recalling the church steeples featured in historic engravings of the city, and believed that its presence would be far more delicate than opponents of the project alleged. He proposed a sophisticated use of glazing, with expressive façades of angled glass panes intended to reflect sunlight and the sky above, so that the appearance of the building will change according to the weather and seasons. The building features 11,000 panes of glass, with a total surface area of 56,000 square metres (600,000 sq ft).
Following the destruction of the World Trade Center (WTC) in the terror attacks of 11 September 2001, architects and structural engineers worldwide began re-evaluating the design of tall structures. The Shard's early conceptual designs were among the first in the UK to be progressed following the publication of the US National Institute of Standards and Technology (NIST) report into the collapse of the WTC. The building was designed to maintain its stability under very onerous conditions, with its post-tensioned concrete and composite floors, load-bearing pillars and tapering shape giving it a sway tolerance of 400 millimetres (16 in).



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