How much quality control is there on the pours for each floors? What kinds of things do they look for and check before they determine they can go on to start getting ready for the next floor?
I'm in a different field now, but my old job provided me with some opportunities to interact with the guys who worked on these large projects. The culture is fascinating. They have all sorts of names for different trades and different things on the job site - only trade I can remember is carpenters are called woodpeckers. I mostly met ironworkers, who split up their work crews into different "gangs." The bolt-up gang, the erection gang, the decking gang, the finishing gang. I learned a little more about how traditional steel erection than poured in place concrete, but I do know that the top floors are essentially controlled by single subcontractor while they are Controlled Access Zones. The GC is still technically in charge of those floors, but they really differ to the specialists at that point. When the sub believes they are done with the floor, they turn it over to the GC, who inspects the floor and either accepts or rejects it. If the GC accepts it, other trades can then go on the floor.
All the main subcontractors are very experienced and knowledgable on these large projects, and they all have multiple current and prior projects with the same GCs. If they don't do a good job, they know the GC won't hire them again, so the quality control is usually very good.
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