|New World Trade Centre - Photo by flickr/asterix611|
However, on 27 April 2006 work began on One World Trade Centre, formerly known as Freedom Tower, and other buildings which will stand on the site of the original World Trade Centre. By the time of its scheduled completion in 2013 One World Trade Centre will be the tallest building in the Western Hemisphere and the third tallest building in the world.
The architecture of One World Trade Centre draws upon inspiration from a number of iconic New York landmarks including the Empire State Building, the Chrysler Building, the North Tower of the original World Trade Centre and the Statue of Liberty.
The very height of the building is in fact symbolic. One World Trade Centre will stand at 1,776 feet in reference to the year of American independence from British rule. The building’s footprint will be nearly identical to that of the original twin towers of the World Trade Centre at 200 feet square.
The tower will be mounted upon a 185 foot high windowless concrete base which will be designed to protect the lower part of the tower from ground based terrorism threats such as truck bombs. The building will also feature reinforced concrete walls in all stair wells, lift shafts, risers and sprinkler systems.
Access to One World Trade Centre will also be strictly controlled. All vehicles entering the site via the underground roadway will be screened for explosives and radioactive materials. Visitors to the 911 memorial will be screened by airport-style security measures.
These measures may include full body scanners that have been introduced at many locations around the world. These scanners allow for automated access by the public but prevent egress until the scan has been completed. On completion of the scan sliding doors open in front of the individual, allowing them to exit the scanner.
These scanners can be used to detect a wide variety of materials which may pose a threat to the security of the building. As well as detecting metallic items these scanners have the capability to alert authorities to explosive and radiological materials.
Unlike the original World Trade Centre that was 8m away from nearby West Street at its nearest point, One World Trade Centre will be 20m away at the nearest point. In a further effort to minimise the damage caused by falling glass the windows facing West Street will be constructed from tempered blast-resistant plastic instead of glass.
The building will also feature a strong, redundant steel moment frame which will include a series of beams and columns, interconnected by a combination of bolting and welding to provide maximum strength even when exposed to significant heat. This frame will be centred on a concrete core for maximum strength and a column-free interior space.
More on WeAreTraveller:
Top 10 Things To Do In New York
Cheap hotels at Time Square, New York
Most popular tourist attractions in New York