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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 finish2013
Floor Count108
Basement Floors4
Floor to Floor4 m
Floor Area241,548 m²
Building Uses
 - office
 - communication
 - mechanical
 - observation
 - restaurant
 - retail
 - station
Structural Types
 - highrise
 - pole
Architectural Style
 - structural expressionism
 - neomodern
Materials
 - glass
 - steel
 - concrete, reinforced

 Heights ValueSource / Comments 
Antenna541.3 mSkidmore, Owings & Merrill
Antenna will be encased within the spire.
Spire541.3 mSkidmore, Owings & Merrill
Spire will rise to 1,776 feet.
Roof417.0 mNew York Times
Glass Parapet (Same height as WTC One roof height)
Main roof406.9 mSkidmore, Owings & Merrill
Height to the bottom of the parapet
Top floor400.5 mSkidmore, Owings & Merrill Stacking Plan
Height to surface of top floor plate
Base width61.0 mSkidmore, Owings & Merrill
Width of the glass clad concrete base
Base length61.0 mSkidmore, Owings & Merrill
Length of the glass clad concrete base
Base height56.9 mSkidmore, Owings & Merrill
Height of the glass clad concrete base

Description
• Companies:
- Architect(s): David Childs; Skidmore, Owings & Merrill
- Developer: Silverstein Properties, Inc.
- Owner: World Trade Center Properties, LLC
- 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

• This is the Freedom Tower's 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 building now officialy 108 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 - 108 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 Freedom Tower 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.

• 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 the Freedom Tower can be found at:

- Lower Manhattan Development Corporation: http://renewnyc.com/
- Silverstein Properties: http://www.silversteinproperties.com

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Drawing by MikeR
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