China Will Build The Tallest Building In The World In Just 90 Days

According to its engineers, this will be the tallest skyscraper in the world by the end of March of 2013. Its name is Sky City, and its 838 metres distributed in 220 floors will grow in just 90 days in Changsha city by the Xiangjiang river. Ninety days!

It's not a joke. According to the construction company, the skyscraper will be built in just 90 days at the unbelievable rate of five floors per day.

It's hard to believe, but they claim the building has been designed by some of the engineers who previously worked at the Burj Khalifa. It is also the same firm that built a full 30-storey hotel in 15 days — which is still standing and in perfect working condition.

Foundation work is beginning at the end of the month, once the Chinese authorities give the final go-ahead to the project.

Pre-Fab Magic

They will be able to achieve this impossibly fast construction rate by using a prefabricated modular technology developed by Broad Sustainable Building, a company that has built 20 tall structures in China so far, including the that 30-storey hotel.

Since they built that hotel, the company has been perfecting their technology, which they are now claiming will turn their project into the world's tallest skyscraper in just three months. That's a whooping five floors per day, which seems just absurd. According to Construction Week Online, the company is very serious about it. The senior VP of the Broad Group, Juliet Jiang, has publicly said that they "will go on as planned with the completion of five storeys a day".

Record Numbers

Unlike the Burj Khalifa, the tower will be mostly habitable. Its final height will be 838 metres. Compare that to the Burj's metres, which include the spire at the top resulting in a total of 163 floors.

Sky City will use an astonishing 200,000 tonnes of steel. The structure will be able to house 31,400 people of both "high and low income communities". The company says that the residential area will use 83 per cent of the building, while the rest will be offices, schools, hospitals, shops and restaurants. People will move up and down using 104 high-speed lifts.

The record figures don't stop there: in addition to the 90-day construction time — as opposed to the 210 days initially reported by the Chinese media — the company claims it will cost $US1500 per square metres as opposed to the Burj's $US15,000 per square metre, all thanks to the prefab technology.

They also claim it will be able to sustain earthquakes of a 9.0 magnitude and be resistant to fire for "up to three hours", as well as be extremely energy efficient thanks to thermal insulation, four-panned windows and different air conditioning techniques that were already used in their previous constructions.

It all seems like a tall tale to me — no pun intended. Although the credentials of the company seem to be quite serious, one thing is to build a 30-storey hotel in 15 days and the other is to build the largest skyscraper in the world in 90 days. It just boggles the mind.

Whatever it is, we will discover it in March. If it's confirmed, the time-lapse videos are going to be epic. [Construction Week Online]



    Building the worlds tallest building seems like something you wouldn't want to rush. While everything may end up being fine, I don't think I'll be visiting it.

      Please don't make judgements based on speculation of the quality of construction. Nothing is being rushed. Assuming the construction sequence is similar to the clip shown, the 90 days (most likely excluding foundations) is simply the assembly. It will be 5 times that for the prefabrication of the panels/slabs/units/etc used in the structure. Think of assembling a pc, takes you 1hr but does that mean that the parts are crap quality? Most likely because the construction components are being design and manufactured in a controlled factory environment, the quality will be much higher than if it was done on site. Don't know about China, but Australia Standards require a much higher level of structural adequacy for buildings that will affect a lot of people when they fail, therefore no matter what happens, this will be much safer than you "non-rushed constructed" residential house.

        Well the pre-fabricated steel structures they are using for this project has not been approved or tested for use in the construction of buildings over 100 metres (this project is well over 800 metres). I fear they are trying to cut too many corners to get this thing constructed too quickly and at much cheaper costs. Sadly, thats how the Chinese business people usually operate..

        Read this:

    I doubt that 90 day limit will include the foundation and final fit-out somehow. Still an impressive feet if they can pull it off. It will stand as a benchmark for bigger buildings. Also it negates the need to pump concrete to the top under incredible pressure.

      At 5 floors per day they will reach 220 floors in 44 days... that's gives them 46 days for other tasks, not including things that can be done during construction such as fit out of lower floors.

      Regarding quality, a development of this size, regardless of where in the world, is not the same as Mr & Mrs Wu throwing up a set of apartments... or even a private developer throwing up a whole estate...

    This is very impressive indeed however, if the time to manufacture all of the pre-fabricated components are not included in the build time then it must be said that they are assembling a building in 90 days, rather than actually building it in 90 days.

    This does not detract from the truly remarkable feat and I would be most interested to visit the building.

    I think these guys played Sim City for a bit too long.

      Sounds more like they have played too much SimTower to me...

    It's an odd place to build it.. I wonder what the justification is.. sure, it's not a completely unknown town with a lot of rich history.. but why build this there... at first I thought it might be where the new "president" is from.. but he's from Henan not Hunan.. oh well.. I'll see if my Chinese friends have any ideas :)

    We all know how good Chinese building standards are. Just wait for the next earthquake and then get back to me. Just because you can doesn't mean you should. It's just a pissing contest by engineers. About time they worried more about clean air and water than wasting more of our finite and dwindling resources.

    Agreed, all good that it is going up quickly... but setting a date to have it finished by seems a recipe for disaster. Rushing anything of that scale is idiotic at best

    If the Chinese can't do it then it's impossible.

    I live in China and everywhere you go there are new buildings being constructed yet not so quickly. The quality of the constructions is often questionable with a fair portion of the money being siphoned off to fill the pockets of politicians and business people while many of the workers are, by Australian standards, unskilled. In Suzhou, a major city an hour west from Shanghai, a landmark building is currently being disassembled due to engineering problems. The Chinese have the money and (potentially) the skills (as seen by its awesome fast train network) the question is whether they want to keep cutting corners. Guanxi is ruining China.

    how do they get the crane down from the roof?

    That vid reminds me of C&C :-)

    o man that construction looks so flimsy, I'd be scared to lean against the walls

    i've got 3 words for you all......"MADE IN CHINA"

    Hope it collapses. The changs need to be taken down a peg or two.

      I hope you get hit by a bus. The world needs less racist morons.

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