Quote:
Originally Posted by uakoops
I was wondering what holds up all that weight until the hanger is attached at the top. I guess that's why they haven't poured any concrete on the floors yet.
OTOH, why only this side? the south entrance is much wider.
My theory is that they are there to spread the tension of the cable net wall over 2 beams. Again, why only this side?
Maybe it's just a giant egg slicer (for the Subway?) 
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All our guessing is out the window, there is no beam above the spandrel beam above the entrances. The spandrel beam is more than enough to support the cable net wall, even on the south side, once the hanger is supported.
I'm going back to rebar for a wall. There are alot of walls on the 3rd floor for air plenum's.