The new fixed roof structure, weighing more than 9,000 tons of steel, consists of two 177-meter guyed trusses and four 144-meter transverse trusses. Inside, the transverse trusses slide the retractable roof, divided into two panels made up of 5 inflatable cushions measuring 72 by 7 meters between 6 hybrid steel trusses measuring 72.5 meters. At their ends are motorized bearings that are part of the lifting mechanism.
The main trusses, which during assembly are the guide for the rest, transfer the vertical load to two new evacuation towers to the west and to two articulated pendulums integrated into the East Building, which in turn gathers horizontal forces next to the towers, completely independently of the existing structure.
