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  2. 1 Undershaft - Wikipedia

    en.wikipedia.org/wiki/1_Undershaft

    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.

  3. List of tallest buildings and structures in London - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest_buildings...

    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]

  4. St Helen's (skyscraper) - Wikipedia

    en.wikipedia.org/wiki/St_Helen's_(skyscraper)

    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.

  5. List of hyperboloid structures - Wikipedia

    en.wikipedia.org/wiki/List_of_hyperboloid_structures

    A hyperboloid of one sheet is a doubly ruled surface: it can be generated by either of two families of straight lines. Four images of hyperboloid towers. The Shukhov Tower in Polibino , the world's first hyperboloid structure , a water tower by Vladimir Shukhov at the All-Russian Exposition in Nizhny Novgorod , Russia

  6. Skyscraper - Wikipedia

    en.wikipedia.org/wiki/Skyscraper

    A skyscraper is a tall continuously habitable building having multiple floors. Modern sources define skyscrapers as being at least 100 metres (330 ft) [1] or 150 metres (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 ...

  7. List of tallest freestanding steel structures - Wikipedia

    en.wikipedia.org/wiki/List_of_tallest...

    This is a list of tallest freestanding steel structures in the world past and present. To be a freestanding steel structure it must not be supported by guy wires, the list therefore does not include guyed masts and the main vertical and lateral structural elements and floor systems in the case of buildings, are constructed from steel.

  8. New York City crane collapse – live: Six injured after crane ...

    www.aol.com/york-city-crane-collapse-live...

    Not the first crane accident for city, or equipment owner. 08:45, AP. The crane is owned by the New York Crane & Equipment Corp., one of the city’s most widely used crane providers, officials said.

  9. Skyscraper design and construction - Wikipedia

    en.wikipedia.org/wiki/Skyscraper_design_and...

    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 ...