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词条 1 Undershaft
释义

  1. Background

      Original proposal    New proposal    Design  

  2. See also

  3. References

  4. External links

{{Infobox building
| name = 1 Undershaft
| status = Approved
| image = File:Proposed_design_of_1_Undershaft,_London.jpg
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| caption = Proposed design for 1 Undershaft (centre), standing to the left of The Gherkin
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| building_type = Office
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| client = Aroland Holdings
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| address = 1 Undershaft
| location_town = London, {{postcode|EC|3}}
| location_country = United Kingdom
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| architectural = 300 m (984 ft)
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| floor_count = 74
| floor_area = {{convert|132,000|m2|sqft|0|abbr=on}} (office)[1]
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| architecture_firm = Eric Parry Architects
| structural_engineer = WSP[2]
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1 Undershaft, informally known as The Trellis due to its external cross bracing, is a skyscraper planned for the City of London financial district which was given approval in November 2016. The scheme has been developed by Aroland Holdings and designed by Eric Parry Architects. It is set replace the St Helen's tower and upon completion will become the second tallest skyscraper in London and the United Kingdom.

The building is the second design for a skyscraper at 1 Undershaft, replacing a previous proposal designed by architects Avery Associates. The approved plans are also revised, reducing the height of the tower. Construction may not begin until several years after its approval date.

Background

Original proposal

In January 2015, early plans emerged of a replacement office building for the St Helen's tower in Undershaft within London's Square Mile.[3] The proposal, named 1 Undershaft, was designed by Avery Associates who began working on the scheme in collaboration with the then owner of the site Simon Halabi in 2010.[4] At 270 metres (885 ft), it would have become the third tallest building in London and the United Kingdom behind The Shard and the stalled Bishopsgate Tower.[5]

New proposal

In July 2015, details of a revised scheme by the new owners of the site, Aroland Holdings, were reported. The plans were for a skyscraper of 304 m (997 ft) designed by Eric Parry Architects.[6] According to some reports, the design could be "modelled on Cleopatra's Needle".[7]

In December 2015, the new design was released for a tower of 294.6 metres (966.5 ft) with 73 floors.[8][9] Subject to planning permission, it was set to become the tallest building in the Square Mile when completed and the second tallest building in London and the United Kingdom behind The Shard.[5] A consultation process took place in autumn 2015.[10] On 8 February 2016, a planning application was submitted for the development,[11] with a decision expected to be made in September 2016.[12]

However, a revised planning application was submitted by the developer which reduced the proposed height by 4.66 m to 289.9 m (951.2 ft), due to possible interference with the flight paths of the nearby London City Airport. Each floor has been reduced in height by 50 mm and structural floor beam depths have been changed. In addition, the level of the soffit has been decreased and the viewing gallery height has been reduced, which was intended to be double height. Despite its height reduction, the proposed height will still make 1 Undershaft the second tallest building in London and the United Kingdom upon completion.[13]

Following a recommendation by planning officers for approval, the scheme was approved by the City of London Corporation on 28 November 2016, with 19 votes in support and two against and given final approval by Mayor of London Sadiq Khan on 12 December 2016.[14][15][16] The start date for construction of the scheme has not yet been decided, but building work is expected to be finished anywhere between six and ten years from its approval date,[17] with demolition of the St Helen's building currently on the site expected to take 18 months and construction of 1 Undershaft due to take between three and four years.[18]

Design

The proposed skyscraper is rectangular in shape and slightly tapers as it gets higher.[20] Developer Aroland Holdings originally wanted 1 Undershaft to be taller than the proposed height. However, the height has been limited by the Civil Aviation Authority (CAA) to avoid intruding on flight paths. In addition, the building's crown, which was intended to resemble Cleopatra's Needle, was not accepted by City planners who wanted "a less demonstrative top. They didn’t want another overt shape".[19]

The tower is designed to be built 10.5 metres off the ground in order to create public space underneath the building. To make room for the public space, the core will need to be positioned to the side of the tower. As a result, bronze diamond shaped external cross bracing will be required, giving the building its nickname The Trellis.[8][20][21]

A public square is also part of the proposed scheme with {{convert|2,178|m2|sqft|0|abbr=on}} of retail space below ground level.[1][19] The top of the skyscraper is set to have London's highest viewing gallery free for public access (which could include a museum run by Museum of London),[22] and a restaurant.[8][19]

See also

  • List of tallest buildings and structures in London
  • List of tallest buildings in the United Kingdom

References

1. ^{{cite web|last1=Waite, Braidwood|first1=Richard, Ella|title=Thumbs up for tallest tower in City|url=https://www.architectsjournal.co.uk/news/thumbs-up-for-tallest-tower-in-city/10015213.article|website=Architects Journal|accessdate=29 November 2016}}
2. ^{{cite web|last1=Rogers|first1=Dave|title=Singapore developer unveils plans for London's tallest tower|url=http://www.building.co.uk/londons-next-tallest-tower-unveiled/5079084.article|website=Building|accessdate=24 October 2016}}
3. ^{{cite web|url=http://www.constructionenquirer.com/2015/01/16/design-unveiled-for-city-of-londons-tallest-skyscraper |title=Construction Enquirer » Design unveiled for City of London’s tallest skyscraper |work=constructionenquirer.com |accessdate=2015-01-21 |archiveurl=https://www.webcitation.org/6XHb5AV9k?url=http://www.constructionenquirer.com/2015/01/16/design-unveiled-for-city-of-londons-tallest-skyscraper |archivedate=2015-03-25 |deadurl=no |df= }}
4. ^{{cite web|url=http://www.archdaily.com/589330/avery-associates-reveals-design-for-270-metre-tower-next-to-london-s-cheesegrater/ |title=Avery Associates Reveals Design for 270-Metre Tower Next to London’s Cheesegrater |work=ArchDaily |accessdate=2015-01-21 |archiveurl=https://www.webcitation.org/6XHb2KEda?url=http://www.archdaily.com/589330/avery-associates-reveals-design-for-270-metre-tower-next-to-london-s-cheesegrater/ |archivedate=2015-03-25 |deadurl=no |df= }}
5. ^{{cite web|title=Skyscraper Center - London|url=http://skyscrapercenter.com/city/london|website=skyscrapercenter.com|accessdate=8 October 2015}}
6. ^{{cite web|title=Plans for skyscraper to rival the Shard to be submitted to City of London|url=https://www.standard.co.uk/news/london/plans-for-skyscraper-to-rival-the-shard-submitted-to-city-of-london-10368069.html|website=Standard.co.uk|accessdate=10 July 2015}}
7. ^{{cite web|title=22 Bishopsgate – and the steroidal towers set to ruin London's skyline|url=https://www.theguardian.com/artanddesign/2015/jun/30/22-bishopgate-skyscraper-london-skyline-development|website=theguardian.com|accessdate=12 July 2015}}
8. ^{{cite web|title=Eric Parry Architects unveils tallest tower in City of London|url=http://www.dezeen.com/2015/12/07/eric-parry-architects-1-undershaft-development-skyscraper-tallest-tower-city-london-financial-district/|website=dezeen.com|accessdate=7 December 2015}}
9. ^{{cite web|title=No.1 Undershaft at The Skyscraper Center|url=http://skyscrapercenter.com/building/no1-undershaft/19785|website=skyscrapercenter.com|accessdate=7 December 2015}}
10. ^{{cite web|title=Plans for skyscraper to rival the Shard to be submitted to City of London|url=https://www.standard.co.uk/news/london/plans-for-skyscraper-to-rival-the-shard-submitted-to-city-of-london-10368069.html|website=Standard.co.uk|accessdate=12 July 2015}}
11. ^{{cite web|last1=Williams |first1=Richard |title=Plans for City of London's tallest building submitted |url=http://www.propertyweek.com/plans-for-city-of-londons-tallest-building-submitted/5079124.article |website=propertyweek.com |accessdate=9 February 2016 |deadurl=no |archiveurl=https://www.webcitation.org/6fAEYw9KN?url=http://www.propertyweek.com/plans-for-city-of-londons-tallest-building-submitted/5079124.article |archivedate=9 February 2016 |df= }}
12. ^{{cite web|last1=Bevan|first1=Robert|title=The Shaft will rival the {{sic|hide=y|reason=double 'the' error in source title}} The Shard for coolest skyscraper in London|url=https://www.standard.co.uk/lifestyle/design/how-eric-parrys-1-undershaft-will-rival-the-the-shard-for-coolest-skyscraper-in-london-a3301016.html|website=standard.co.uk|accessdate=23 July 2016|date=21 July 2016}}
13. ^{{cite web|last1=Waite|first1=Richard|title=Eric Parry reduces height of tallest tower in City|url=https://www.architectsjournal.co.uk/home/eric-parry-reduces-height-of-tallest-tower-in-city/10012387.article|website=architectsjournal.co.uk|accessdate=3 October 2016}}
14. ^{{cite web|last1=Lynch|first1=Russell|title=Square Mile’s tallest tower dubbed the "Trellis", set for thumbs-up|url=https://www.standard.co.uk/business/square-mile-s-tallest-tower-dubbed-the-trellis-set-for-thumbsup-a3400766.html|website=Evening Standard|accessdate=21 November 2016|date=21 November 2016}}
15. ^{{cite web|last1=Bourke|first1=Joanna|title=Plans to build City of London's tallest skyscraper given green light|url=https://www.standard.co.uk/business/the-trellis-skyscraper-gets-the-green-light-in-london-a3406681.html|website=Evening Standard|accessdate=28 November 2016|date=28 November 2016}}
16. ^{{cite news|last1=Prynn|first1=Jonathan|title=Sadiq Khan gives backing for City's two tallest towers to be built|url=https://www.standard.co.uk/news/london/sadiq-khan-gives-green-light-for-two-tallest-buildings-in-the-city-to-be-built-a3418826.html|accessdate=27 April 2017|work=Evening Standard|date=13 December 2016}}
17. ^{{cite web|last1=Sullivan|first1=Connor|title=Subscribe to read|url=https://www.ft.com/content/20dfcf82-b2f4-11e6-9c37-5787335499a0|website=www.ft.com|accessdate=28 November 2016}}
18. ^{{cite web|last1=Bury|first1=Rhiannon|title=1 Undershaft, the tallest tower in the City of London, gets the green light|url=https://www.telegraph.co.uk/business/2016/11/28/1-undershaft-tallest-tower-city-london-gets-green-light/|website=The Telegraph|accessdate=28 November 2016}}
19. ^{{cite web|last1=Wainwright|first1=Oliver|title=1 Undershaft, the tallest skyscraper in the City of London, revealed|url=https://www.theguardian.com/artanddesign/architecture-design-blog/2015/dec/07/1-undershaft-tallest-skyscraper-city-of-london-eric-parry|website=Guardian.com|accessdate=7 December 2015}}
20. ^{{cite web|last1=Heathcote|first1=Edwin|title=City of London’s tallest building rises above corporate interests|url=http://www.ft.com/cms/s/5eaa0532-9c0a-11e5-8ce1-f6219b685d74,Authorised=false.html?siteedition=uk&_i_location=http%3A%2F%2Fwww.ft.com%2Fcms%2Fs%2F0%2F5eaa0532-9c0a-11e5-8ce1-f6219b685d74.html%3Fsiteedition%3Duk&_i_referer=https%3A%2F%2Fwww.google.co.uk%2Fd41d8cd98f00b204e9800998ecf8427e&classification=conditional_standard&iab=barrier-app#axzz3tcRQ347K|website=ft.com|accessdate=7 December 2015}}
21. ^{{cite web|last1=Morby|first1=Aaron|title=London’s second tallest tower set for approval {{!}} Construction Enquirer|url=http://www.constructionenquirer.com/2016/11/21/londons-second-tallest-tower-set-for-approval/|website=www.constructionenquirer.com|accessdate=28 November 2016}}
22. ^{{cite web|last1=Haslett|first1=Emma|title=Could a new City skyscraper host London's highest museum?|url=http://www.cityam.com/242452/could-new-city-skyscraper-1-undershaft-host-londons-highest-museum|website=cityam.com|accessdate=24 November 2016|date=2 June 2016}}

External links

  • Avery Associates website Avery-Architects.co.uk
  • Eric Parry Architects website EricParryArchitects.co.uk
{{Use dmy dates|date=January 2019}}

3 : Buildings and structures in the City of London|Proposed skyscrapers in London|Redevelopment projects in London

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