
One World Trade Center – Freedom Tower
Project Description
Symbol of the city of New York, One World Trade Center (WTC), also known as “Freedom Tower” has a symbolic height of 541.3 m (1776 ft) to become the tallest skyscraper in America. Designed by David M. Childs of Skidmore, Owings & Merrill, the building covering 2.6 million square feet includes offices, an observation walkway, high-end restaurants and a broadcast antenna. The tower is located at the northwest corner of the World Trade Center.
Fabrication of structural steel and heavy steel built-up members are an important part of the tower. Four corner nodes near the twentieth floor are among the assembled heavy components (assemblies of 34.3 meters long – 199 tons) produced by ADF for this project.
The contract also includes the fabrication of the base and the mast of the huge antenna on the roof of the building, parts of which weigh up to 54 tons each.
Description of services provided
Fabrication Engineering:
- Concept and design of all connections for the frame outer steel, from the 20th floor to the 100th floor.
- Concept and design of all connections for the inner and outer steel frame from the 100th floor to the 105th floor.







