19 days to build a 57-storey tower
19 days to -assemble- a 57 storey tower. Four and a half months constructing the modules for assembly.> Broad Sustainable Building spent four and a half months fabricating the building’s 2,736 modules before construction began. The first 20 floors were completed last year, and the remaining 37 were built from 31 January to 17 February this year, Xiao said.http://www.theguardian.com/world/2015/apr/30/chinese-constru...