Bovis Lend Lease, noted for work on Disneyland Paris, Petronas Towers, and the Time Warner Center, was the construction company. James McHugh Construction Co, the concrete subcontractor, implemented a comprehensive formwork for the construction of the building. At the completion of construction the building was the tallest formwork structure in the world, and follows in the footsteps of its neighbor, Marina City, as well as Chicago's Two Prudential Plaza, as past recordholders. Concrete moulding was used, because using a traditional ironwork structure would have required a building footprint that would have been too big for the property size, proportional to the height of the designed building. A steel frame would have had to be wider to have supported a building of this proportion. Concrete will counteract the force of wind with the force of gravity of the building. A new chemical process that leveraged more fluid liquid concrete facilitated pumping concrete up several hundred feet to the elevating construction site. Although previous technology limited formwork to , this technology permitted the pumping of concrete high.