World’s Tallest Skyscraper Back On Track To Be Built in 90 Days

Courtesy of

Despite reports that construction firm Broad Sustainable Building (BSB), a subsidiary of Broad Group, could not complete its 220-story Sky City tower in 90 days, the company’s senior VP Juliet Jiang has announced that the skyscraper “will go on as planned with the completion of five storeys a day.”

Thus, rather than in seven months, the world’s tallest tower (838 m; 2,750 ft) will be finished in three – topping out at the end of March 2013.

As we’ve discussed before here on ArchDaily, the tower could truly be revolutionary in China; Broad Group’s 95% modular technology, which is responsible for the incredible rate of construction, is also radically environmentally-friendly, earthquake-safe, and cost-effective. In fact, Sky City, designed by engineers who worked on the Burj Khalifa, will cost a tenth of that famous skyscraper (only $1,500 per square meter) – and take a twentieth of the time to build.

More info on the world’s tallest tower, after the break…

Courtesy of Broad Group

According to ConstructionWeekOnlineSky City will be 83% residential, housing 31,400 people from both luxury and low-income communities. The building will also include schools, hospitals, offices, shops and restaurants.

Broad Group has advertised that the structure, which will require 200,000 tons of steel (although relatively little concrete), will withstand earthquakes of up to 9.0 on the Richter scale, resist fire for up to three hours, and include many eco-friendly features, such as 15cm thermal insulators, four-paned windows, and fresh air heat-recovery systems.

However, the tower still needs approval from the Chinese government to go ahead – which isn’t certain. Experts have expressed doubt about the structural integrity of a structure so light; Kevin Brass, the public affairs manager and journal editor for the Council on Tall Buildings and Urban Habitat, told ConstructionWeekOnline  that he doubted the stiffness and strength of the structure would be able to bear the significant wind load at such a height.

Either way, we’ll keep you updated as this story unfurls.

For a more in-depth look at Sky City, and the visionary leader behind it, click here. 

Story via ConstructionWeekOnline

Cite: Quirk, Vanessa. "World’s Tallest Skyscraper Back On Track To Be Built in 90 Days" 22 Nov 2012. ArchDaily. Accessed 23 May 2015. <>
  • JWalk

    Absolutely hideous, haste makes waste.

    • DDS

      What impresses me is how it seems to invoke the exact same phrase in people. I saw the picture and though “hideous. Absolutely hideous”. Scrolled down to the comments and…

  • nathan

    They’re building it in Chicago? They should probably let the planning department know, some people might want to have input.

    • ScottS

      Pretty sure that is just for a size comparison unless they are going to demo half of downtown, however it might fit in with the orthagonal blocking of sears tower. Amazing what they can do yet unfortunate design.

  • Alito

    Form follows Boredom.

  • Ben Dover

    To ask a question Mies van der Rohe would probabely ask; ‘it is interesting, but is it good?’.

    Well, is it?

  • kg

    at least it’s cool, kind of sci-fi…

  • nathan

    Is this an Onion article?

  • Jimmy

    Yuck! Thats what happens when you let a bunch of know it all engineers design a building…

  • Calvin

    It’s hardly the most boring or hideous building. If anything, it’s average. (imo One World Trade is not more appealing)

    The haste comes from pre-fab. Technically one can pre-fab variations and better design as well. It will add a bit of time but will still be fast in assemblage. Plus the fact it’ll probably be 24/7 construction like their previous one.

    Saying “haste makes waste” shows little thoughts and is just being a hater. Speed has some but not everything to do with the design.

    • jason

      The concept is based off of speed, how fast can the building be assembled, when has anything designed to maximize profits ever been good?

  • Vali

    We need a bigger King Kong !!!

  • Walt

    Aesthetics aside, does the developer really have the steel to build? China, the world’s largest consumer of steel (also produce 45% of world’s steel)is feeling the effects of the global economic slow down. “Ghost inventories” are a growing concern among lenders to developers who have pledged steel assets as collateral. As defaults rise, the former group are finding empty warehouses when they go to collect from the latter group.

  • Marcus

    I bet the Lego Architecture designers are smug

  • jhg

    The design idea is weak and the facades are very plain.
    The speed of construction is good and could be applied to
    buildings of design merit.

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