We are pleased to present this book which showcases ... - WSP Group

Reaching a height of 541 m, the Freedom Tower will provide an
inspirational and enduring landmark on the New York City skyline.
WSP Cantor Seinuk has been appointed as structural engineer for
the tower, to be built at the World Trade Center site in downtown
Manhattan. Revised designs build upon the original’s extraordinary
level of life safety features for an unprecedented level of safety and
security.The Freedom Tower will also provide a world-class model
of energy efficiency and environmental sustainability.
The tower’s footprint, at 61 m x 61 m, will be the same as those of
the original Twin Towers.As the tower rises from its cubic base, its
square edges are chamfered back, transforming the square into eight
tall isosceles triangles in elevation.At its middle, the tower forms a
perfect octagon in plan and then culminates in an observation deck
and glass parapet which reach a height of 415 m and 417 m
respectively – the heights of the original Twin Towers.The plan
of the observation deck is a square rotated 45 degrees from the
base.A mast containing an antenna for the Metropolitan Television
Alliance and secured by a system of cables, rises from a circular
support ring to a height of 541 m.
Rising from the plaza level, a 25 m high public lobby is topped by
a series of mechanical floors; together these form the 60 m high
building base, which will be reinforced for security and clad with
a mixture of stainless steel and titanium. Sixty-nine office floors
containing 240 000 sq m of office space rise above the base.
There will also be world-class restaurants, below-grade shopping
and access to the PATH and subway trains, as well as to the
World Financial Center.
The structure consists of a robust, high-strength concrete core
paired with a highly redundant perimeter steel moment frame which
together provide column-free interior spans for maximum flexibility
of tenant use.
Freedom Tower is projected to top out in 2009 and be ready for
occupancy in 2011.
Client:
Silverstein Properties
Project team:
Architect: Skidmore, Owings & Merrill LLP
Construction management:Tishman Construction Corporation
Project size:
Height: 541 m
Footprint: 61 x 61 m
Status:
Projected top out 2009. Occupancy 2011
WSP Cantor Seinuk services:
Structural engineering
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