How Is It Possible to Build a 57-Story Skyscraper in Only 19 Days?

View from the 57-story Mini Sky City skyscraper built in 19 days. (Screenshot/Vimeo)
View from the 57-story Mini Sky City skyscraper built in 19 days. (Screenshot/Vimeo)

A company called Broad Sustainable Building built a 57-floor skyscraper called Mini Sky City in Changsha, Hunan Province, China. But what is scary is that they did it in just 19 days! That works out to be about three floors a day.

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57-story skyscraper built in Changsha in only 19 days—this is day 18. (Screenshot/YouTube)

The skyscraper has 2 million square feet of space, and was built using prefabricated sections.

Here’s a time lapse video of the construction:

The skyscraper also has:

  • 19 atriums that stand 10 meters tall
  • Office space for 4,000 people
  • 800 apartments

Using the prefabricated sections meant that the process reduced the use of concrete by 15,000 truckloads, which in turn meant there was much less dust released into the air.

The company had previously built a 30-story hotel in Shanghai in 15 days.

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30-story hotel built in Shanghai in 15 days. (Screenshot/YouTube)

The quick construction may be eco-conscious, but with China’s history, people have raised concerns over safety.

Here’s a time lapse video of the 30-story hotel that was built in 15 days:

The company is claiming that its technology is “the most profound innovation in human history.”

Chinese bloggers have different points of view. Some have pointed out that such construction might take a couple of years to complete, and simply applying for it may already need two years.

Others said that there are bound to be safety issues, so they wouldn’t dare to live there.

One blogger joked: “Well, it takes just 19 seconds to collapse.”

Whether in China or elsewhere, I’d have concerns over the safety of a skyscraper built that quickly.

Research by Jane Tseng

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