The company hoping to build the world's tallest skyscraper in record time held a groundbreaking ceremony on July 20, in Changsha, China. Broad Sustainable Building is planning to build the 838-meter Sky City using its prefabricated modular construction method.
The founder of parent company Broad Group Chairman Zhang Yue announced the tower will be completed by April 2014 and will cost around US$ 846 million to complete. Its total built-up area...