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One World Trade Center

Block #88, Financial District
New York City NY United States

Status:under construction
Construction Dates
  Began2006
  Will finish2014
Floor Count104
Basement Floors4
Floor Area241,548 m²
Building Uses
 - office
 - communication
 - mechanical
 - observation
 - restaurant
 - retail
 - station
Structural Types
 - highrise
 - pole
Architectural Style
 - modern
 - structural expressionism
Materials
 - glass
 - steel
 - concrete, reinforced

 Heights ValueSource / Comments 
Spire1776 ftSkidmore, Owings & Merrill
A spire with an embedded antenna will rise to 1,776 feet.
Roof1368 ftNew York Times
Glass Parapet (Same height as WTC One roof height)
Main roof1335 ftSkidmore, Owings & Merrill
Height to the bottom of the parapet
Top floor1314 ftSkidmore, Owings & Merrill Stacking Plan
Height to surface of top floor plate
Base height187 ftSkidmore, Owings & Merrill
Height of the glass clad concrete base

Description
• Companies:
- Architect(s): David Childs; Skidmore, Owings & Merrill
- Developer: Port Authority of New York & New Jersey
- Owner: Port Authority of New York & New Jersey
- Construction Manager: Tishman Construction Corporation
- Structural Engineer: Cantor Seinuk Group
___________________________________________________________
Facts & Description:

• Part of the New World Trade Center, which is expected to be completed in 2012 - 2013. Link to Project Diagram:
http://skyscraperpage.com/diagrams/?buildingID=7788,7801,7802,7803,7804,7422&orderby=buildingIDorder

• The building will be the tallest in New York City and the country upon completion, and one of the tallest in world.

• The building has been renamed by the Port Authority (owner) in spring 2009 from Freedom Tower to One World Trade Center.

• This is the buildings second official design. The first, designed by David Childs in collaboration with Daniel Libeskind, was disregarded due to concerns raised by the New York Police department that the building would be vulnerable to a car bomb blast. The second design was planed by David Childs of Skidmore, Owings and Merrill (SOM) and was made public in 2006, shortly before construction started.

• The roof height is the same as original One World Trade Center. The building is topped out by a 124-meter (408-foot) spire. So the tower rises 1,776 feet (541-meter) which marks the year of the American declaration of Indepedence. The spire's tip is considered to architectural top of the building (simiular to other new skyscrapers) because it was designed for this highrise as such and not only as an antenna.

• The building now officialy 105 Floors tall, instead of 82. The base will occupy floors 1 - 19, Floors 20 - 63 will be offices, floor 64 will be a skylobby, floors 65 - 88 will also be offices. Floors 89 - 99 will be Mechanical floors, floors 100 - 102 will be used for Observation and other public uses. Floors 103 - 105 will then be more Mechanical Floors.

• The new design attempts to address the NYPD's concerns with its 186.5-foot-high reinforced concrete blast resistant base, which will contain the Freedom Tower's 80-foot tall lobby and three of its mechanical floors.

• The base of the tower, which was originally to be clad in polished steel and titanium like 7 WTC, will now be covered in vertical bands of glass prisms. The base will have no windows except for several tall narrow ones which will be placed a minimum of 25 feet above the ground.

• The cornerstone of One WTC was laid in July 2004, before the redesign was deemed necessary. The stone was then removed in mid 2006 as foundation work for the tower began. Foundation work is fully completed in 2009 and the towers steel begun to rise towards the sky. Expected topping out is in 2012 and completion is planned in 2013 with a total cost of more than 3 billion US-$.

• After lengthy and combative negotiations that resulted in a reconfigured lease agreement between the Port Authority of New York and New Jersey (the owner of the World Trade Center) and Larry Silverstein (the leaseholder of the complex), construction of the Freedom Tower began on April 27, 2006. Not long after the start of construction, a new battle with the insurers of the World Trade Center resulted from the reconfiguration of the lease. The court battle now threatens to delay or end construction.
___________________________________________________________

• More information about One WTC can be found at:

- Port Authority: http://wtcprogress.com/
- Silverstein Properties: http://www.wtc.com

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Drawing by Koodoo
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