you guys may have already mentioned this as I haven't read back in the thread but everything painted with just the primer (brown) is just temporary and will act as support for when they construct the roof itself which will be supported by steel cables all over the place (kind of like a suspension bridge). This roof will be done right over the current dome teflon roof until approx. April whereupon they move inside to do the work of removing the old roof and other work/changes slated to occur. The two smaller cranes will be moved inside I was told whole as is as they believe they can fit it right through whatever larger door there is there!
Now thats going to be interesting as that's gonna be a tight squeeze I'd imagine.