WTC Construction Update, December 2009Dec 07, 2009
One World Trade Center: Steel erection; concrete placing operations and welding of steel columns (including off hours).
Transportation Hub: Concrete placing operations and steel erection (including off hours); crane placement on the No. 1 Subway Box for installation and removal of material; excavation and bracing at the concourse under West Street; removal of material from demolition of H&M terminal in East Bathtub (including off hours); removal of material under the No. 1 subway box in preparation of permanent “top down” construction to support the subway box (including off hours); installation of utilities on Vesey Street; concrete slab installation for the East/West Corridor (Fulton Street); erection of steel in PATH station.
Vehicle Security Center: Installation of slurry wall foundation panels along Cedar and Washington streets; relocation of sewer on Washington Street (including off hours).
National September 11 Memorial & Museum:Concrete placing operations and steel erection (including off hours).
Tower 2: Site preparation for compaction grouting in the area of the MTA “E” platform (including off hours).
Tower 4: Concrete placing operations (including off hours).