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1 Undershaft is a skyscraper planned for the City of London financial district. The scheme is being developed by Aroland Holdings [ 4 ] and designed by Eric Parry Architects . It is set to replace the St Helen's tower, and if built will be the second-tallest building in London and the United Kingdom at 294 metres.
1 Undershaft, at 290 metres (950 ft), also approved by Sadiq Khan in 2016, [2] is planned to form the centrepiece of the City of London's skyscraper cluster. It is the tallest skyscraper currently proposed for London and will only be exceeded in height by The Shard. [ 63 ]
St Helen's (previously known as the Aviva Tower or the Commercial Union building) is a commercial skyscraper in London, United Kingdom. It is 118 metres (387 ft) tall and has 23 floors. The postal address is No. 1, Undershaft, though the main entrance fronts onto Leadenhall Street, in the City of London financial district.
A skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 meters (330 ft) [1] or 150 meters (490 ft) [2] in height, though there is no universally accepted definition, other than being very tall high-rise buildings. Skyscrapers may host offices, hotels, residential ...
The classic concept of a skyscraper is a large steel box with many small boxes inside it. By eliminating the inefficient part of a shear wall, the central portion, and consolidating support members in a much stronger material, steel, a skyscraper could be built with both horizontal and vertical supports throughout. This method, though simple ...
A skyscraper complex may include multiple skyscrapers, as well as other buildings or facilities, that are either physically connected or part of the same development project. To be included, a complex must have a total floor area of approximately 250,000 m 2 (2,700,000 sq ft) or more.
This is a list of buildings and other structures that have been envisioned. The X-Seed 4000 is one of the tallest structures ever conceived. Shown in this image is the Burj Khalifa (828 m (2,717 ft)), tallest structure in the world at the time of completion in 2010 to this year (2024), and the X-Seed 4000 project (4,000 m (13,000 ft)).
The term twin towers in architecture refers to two tall structures with nearly identical characteristics and similar height, usually constructed close to each other and part of a single complex. The charts below lists most twin and other multi-column structures with similar characteristics.