The quick construction time is to be achieved by using a prefabrication method that allowed them to build this 15 story building in 2 days
http://www.scmp.com/news/china/article/1288748/changsha-skyscraper-faces-brickbats-and-praise
Reported costs vary between 5.25 billion yuan (£560 million) and nine billion yuan (HK$11.3 billion).But should be short of Burj Khalifa's (current tallest building) US$1.5 billion.
Some of the developers claims
• 100% fresh air, no mixed with return air, eliminate infection. 3-stage filtered fresh air , 99% nano-particulates be filtered. Indoor air is 20-100 times cleaner than outdoor air. Central vacuuming system keeps indoor air quality.
• Level 9 earthquake resistance
• 150mm exterior insulated walls, triple-paned windows, exterior solar shading, interior window insulation and heat recovery fresh air, 80% more energy efficient than conventional buildings.
In one building, there will be accommodation for 4450 families in apartments ranging from 645 SF to 5,000 SF, 250 hotel rooms, 100,000 SF of school, hospital and office space, totalling over eleven million square feet. The building footprint is only 10% of the site; the rest is open parkland.
http://www.scmp.com/news/china/article/1288748/changsha-skyscraper-faces-brickbats-and-praise
A groundbreaking ceremony on Saturday for the world's tallest building in Changsha was greeted with praise from some mainland architects - and brickbats from others.
Some held serious safety concerns about the skyscraper, but others hailed it as a revolutionary work of prefabricated urban landscape.
The more than 200-storey structure will tower 838 metres above the Hunan provincial capital and be made entirely of factory-made modules that will be assembled by workers in seven months.
Reported costs vary between 5.25 billion yuan (£560 million) and nine billion yuan (HK$11.3 billion).But should be short of Burj Khalifa's (current tallest building) US$1.5 billion.
Some of the developers claims
• 100% fresh air, no mixed with return air, eliminate infection. 3-stage filtered fresh air , 99% nano-particulates be filtered. Indoor air is 20-100 times cleaner than outdoor air. Central vacuuming system keeps indoor air quality.
• Level 9 earthquake resistance
• 150mm exterior insulated walls, triple-paned windows, exterior solar shading, interior window insulation and heat recovery fresh air, 80% more energy efficient than conventional buildings.
In one building, there will be accommodation for 4450 families in apartments ranging from 645 SF to 5,000 SF, 250 hotel rooms, 100,000 SF of school, hospital and office space, totalling over eleven million square feet. The building footprint is only 10% of the site; the rest is open parkland.