One World Trade Center reaches the 20th floor equivalent

February 4th, 2010 - 1:17 am ICT by BNO News  

NEW YORK CITY (BNO NEWS) – One World Trade Center has reached the 20th floor equivalent level, bringing the tower to 200 feet above street level, Port Authority announced on Wednesday.

The agency’s Commissioners were given an update on the project today at the Board’s World Trade Center meeting. Commissioners were told that the steel has risen to the 20th floor level.

In order to reach that level, the Port Authority’s steel contractor, DCM Erectors, has already constructed nearly 8,000 tons of structural steel – 700 tons more than the total amount of steel in the entire Eiffel Tower.

Currently, ironworkers are installing 16 giant steel nodes on the 20th floor level. Some of the nodes are as large as 175 tons and as high as three floors. These giant pieces act as joints between the steel framing for the building’s podium and the steel for the reminder of the tower, and represent one of the signature elements of the building’s unique design and appearance.

The above-ground height is in addition to the 60 feet, or four floors, of the building below street level, which will contain mechanical space, fuel storage, water tanks, parking, retail and a lobby for the observation deck elevators.

Since construction began, more than 60,000 cubic yards of concrete have been poured for the tower, both above and below ground, almost as much concrete as was used to build the entire Empire State Building.

The initial 20 floors of the tower will consist of a lobby and several mechanical floors, which is required for more complex construction due to security and the configuration of the floors. The next 69 floors will be standard office floors, and will be built at a quicker rate. The tower is scheduled for completion in 2013.

Port Authority Executive Director Chris Ward said, “This progress is one more sign that the site is not a pit anymore. At the same time, we must continue working aggressively each day to keep up the momentum.”

Photos of One World Trade center are available on Port Authority’s website at

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