Canadian Consulting Engineer

Fast food, fast internet, and now fast buildings

May 5, 2015

Condominium towers seem to be sprouting overnight in our cities but most high-rises take at least a year to complete. However, a company in China has actually constructed a 57-storey office and residential building in less than three weeks.

The Broad Sustainable Building Company raised “Mini Sky City” in Changsha, Hunan Province, in 19 days. However, the construction was done in two spurts separated by winter.

The tower was assembled at the rate of three floors per day using 2,736 pre-assembled modules. It has 19 atriums, 800 apartments and office space for 4,000 people. The first 20 floors were built last year, and the remaining 37 were assembled early this spring. The tower is earthquake resistant.

Modular construction has been used before on towers, but critics say it will lead to a bland, monotonous architecture.


The Broad Sustainable Building Company now wants to assemble a tower of 220 floors in three months.

To watch a time lapse videos of the assembly of the Mini Sky City on YouTube, click here.


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