Raffles City Chongqing - Aerial view of The Crystal

The Crystal is made up of a continuous steel structure weighing 12,000 tons and enclosed with a ring comprising about 3,000 pieces of glass panels and close to 5,000 aluminium panels. To erect efficiently, the steel structure is first divided into nine segments – four segments that are built in-situ above the four towers; three middle segments suspended between the four towers that are prefabricated on ground and hoisted into place by hydraulic strand jacks; and two cantilever segments that are assembled