
Lovely images NYGuy. I loved to see that one rising, every day.
Some information from the PA's 2Q 2010 report about One WTC: (
http://www.panynj.gov/wtcprogress/pdf/2Q2010_Report.pdf)
One World Trade Center
- Metal Decking to 27th Floor – Complete
This represents the metal decking on the 27th floor slab, which is approximately
270 feet above street level. Concrete slab work begins immediately following the
welding and approval of the deck. Currently metal decking has been placed to the
30th floor level.
- Steel Erection to 32nd Floor – Incomplete
Steel erection reached the 28th floor prior to the end of the second quarter and is
currently at the 36th floor. This delay has not altered the ultimate completion date
of One World Trade Center because of built-in float to the erection schedule.
Both the concrete and steel contractors continue to reduce their cycle time for
floor construction and are targeting to reduce it further to achieve a sustainable
production rhythm. Furthermore, the steel contractor has developed a plan to use
temporary structural steel to enable the “gap” between the concrete and steel to
increase from 8 to 10 floors, which will help speed steel erection because the steel
contractor will not need to wait as long for the concrete contractor to “catch up.”
This process will provide more distance between contractors work effort and
facilitate a further reduction in cycle time.
- Start Spray Fireproofing – Incomplete
Although incomplete by the last day of June, the spray on fireproofer began work
shortly after the 4th of July holiday. The spray on fireproofing work will continue
up the building behind the steel erection and deck installation. Starting this work
in early July has no negative impact on the building’s critical path schedule.