Redux
New Member
No, there's a bit of skill involved, which the installers lack. Basic lesson from Curtainwall 101 is that you need to have the frames hanging plumb when you install them, or else it's physically impossible to get the interlocks to snap. You can see how they've rigged it that they're way off centre which in turn caused the frame to lean far forward which in turn led to seven grown men fumbling like a bunch of children to force the frame into position. But when you refuse to pay the going rate for labour that's the kind of work you get.
It drives me crazy because that's exactly the sort of thing that gets people hurt, too. It's just asking for someone to slip or get pinched or crushed or worse.
While I am uncertain of your credentials regarding curtain wall installation, I will bow to your conviction that you are correct under normal circumstances... However... How many installation crews have had experience installing curved AND canted curtain wall in the last building cycle?
That particular section is not only curved horizontally, but it is angled inwards as well, creating a special challenge for suspending it by its center of gravity as opposed to its angle of final resting.
Just a thought before too many other armchair engineers chortle at their presumed incompetence.