I lived right next to a construction site a few years ago, and even "normally", some things move pretty quickly. The lot was a parking lot. One day, I looked out the window, and it was a pile of dirt with a fence around it. The asphalt was removed in a workday. Then the lot sat for a few months. Then a drilling machine came in, and they spent a few months doing something with that and some concrete, presumably some part of the foundation. Then when that was over, the workers got busy and constructed 7 stories of parking garage in a week. (That was when I stopped paying attention, because now the new building was blocking all light.) In another few weeks, the whole skyscraper was "finished". Then it sat around for a year, finishing the interior.
So my conclusion is that the hard part of building a building is not erecting the steel skeleton and pouring the concrete. It's the foundation and details that take all the time, and the article omits any details about how long that process took for this hotel.
So my conclusion is that the hard part of building a building is not erecting the steel skeleton and pouring the concrete. It's the foundation and details that take all the time, and the article omits any details about how long that process took for this hotel.