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Broad sticks to 90-day world's tallest target

Chinese modular mogul confirms five-storey daily construction pace

Sky City has been designed to house 31,400 people, to be constructed using 200,000 tonnes of steel, and serviced by 104 high-speed lifts.
Sky City has been designed to house 31,400 people, to be constructed using 200,000 tonnes of steel, and serviced by 104 high-speed lifts.

Broad Sustainable Building (BSB), a subsidiary of the Broad Group based in Changsha in Hunan province, China, insists that it will deliver its 220-storey Sky City within the targeted 90 days, rather than in 210 days as rumoured in the media.

Designed by engineers that worked on the Burj Khalifa, the trick to Sky City achieving the ambitious target is BSB’s 95%-prefabricated modular technology, which can facilitate an astonishing construction pace.

Broad Group senior VP Juliet Jiang informed the Malay Mail  that the company’s plan to construct its 838m skyscraper in Changsha “will go on as planned with the completion of five storeys a day."

BSB's method, already implemented on a total of 20 modular structures in China, gained truly global attention in January after the company's rapid assembly of a 30-storey hotel in just 15 days.

For Sky City the foundation work is expected to go ahead by the end of the month, while the planned three month construction period runs from the end of the year to the end of March 2013.

“We have not issued any press statement on this and it will go on as planned...we have not said anything about 210 days,” continued Jiang, adding that the group is still waiting for project approval from the government.

The plan is for Sky City to house 31,400 people in spread across both luxury and low-income communities. Residential space will make up 83% of the tower, entirely serviced from within the building by schools, hospitals, offices, shops and restaurants.

The structure will be constructed using approximately 200,000 tonnes of steel, and will be built to withstand earthquakes of a magnitude of up to 9.0 on the Richter scale, and to resist fire for up to three hours.

Environmentally radical, Sky City will also be equipped with 15cm thermal insulators, four-paned windows, fresh air heat-recovery systems, and a host of other equally eco-friendly features.

Perhaps the boldest claim is that the cost of the construction of Sky City will come at less than $1,500 per m2 – a tenth of the cost of the Burj Khalifa with its $15,000 per m2 price tag.

To read more about BSB's modular construction method, click here

 

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Construction Week - Issue 725
Jan 19, 2019