Readers may be familiar with the handiwork of China's Broad Group. The company has developed innovative factory-based construction techniques that allow it to build structures much faster (and hence more cheaply) than traditional methods. It became famous for building the core structure of a 30-story hotel (shown below) in just 15 days.
Here's a time-lapse video clip showing how the company's methods allowed it to erect the core of a 15-story hotel in a mind-boggling two days! Finishing the structure took only four more days. I find it particularly interesting that most of the supporting infrastructure of traditional building methods was not required (for example, there was no central crane system used).
Wired magazine has an in-depth article about the company and some of its building projects. It's interesting reading. Apparently the company now plans to build a 220-story skyscraper in just seven months! Given that construction of the planned 104-story One World Trade Center in New York is expected to take seven years, perhaps we should be paying more attention to Broad Group's technology . . .