China began the construction of a building that is about to exceed in height Burj Khalifa in Dubai. According to CNN, the 828 meters tall building is for now the highest in the world.
Named “Sky City”, the construction will feature 838 meters and will be erected in Changsha city, China. The construction company “Board Group” announced that intents to finish the Sky City in April 2014, meaning in only 10 months. Burj Khalifa was finished in 5 years.
The Chinese state owns 470 finished skyscrapers and 332 under construction.
Sky City will cost $1.5 billion and will have 202 levels, a mall, a school, a hospital, offices, a roof garden, an amusement park, sports field, an organic farm and a 10 km long pedestrian street that connects the first floor with the 170th floor.
“The residents don’t have to get out of the building because they can do everything inside it” said Yue Zhang, from Board Group.
Critics are very skeptical about the building because they think that Sky City will be vulnerable thanks to the unconventional building techniques used by Board Group. In 2011, the company built a 30-storey tower in 15 days and in 2010 finished a 15-floor hotel in only 6 days.
According to the company, the construction technique is simple. 20.000 workers make thousands of steel and concrete blocks in the factory, 60 square meters each, for four months. Then, the blocks are transported on the building site where they are lifted and used to build the structure of the building. This phase lasts for two months, achieving three levels per day.
Another four months are necessary to finish the interior of the building. Until now, the company applied this method to the construction of over 30 buildings.