30-story building built in 15 days! Construction time lapse of J57, Changsha, China.What can you accomplish in 360 hours? The Chinese sustainable building company, Broad Group, has yet attempted another impossible feat, building a 30-story tall hotel prototype in 360 hours, after building a 15-story building in a week earlier in 2011. You may ask why in a hurry, and is it safe? The statistics in the video can put you in good faith. Prefabricated modular buildings has many adva
