For the exposed perimeter tube, crews eventually achieved a four-day typical-floor cycle until floor 45; above that, a floor took three days. Outrigger floors took five to eight days, as anticipated.

The Precast/Prestressed Concrete Institute, concerned about an ominous pattern of spandrel-ledge-punching sheer failures in lab tests of double-tee spandrel-beam assemblies commonly found in parking ...