Guang Zhouta (nicknamed Xiaomanyao) has a total height of 600 meters. As of January 2019, it is the second tallest tower in the world. It consists of Guang Zhouta reinforced concrete inner core tube, steel structure outer frame tube and composite floor connecting them. The height of the core tube is 454m, with a total of 88 floors, and the standard floor height is 5.2m The outer frame tube of Guang Zhouta steel structure net is composed of 24 concrete-filled steel tubular columns, 46 groups of ring beams and steel tubular braces, with the highest elevation of 462.70m. The antenna mast composed of steel lattice structure and box section is 146 meters high, with the highest standard as high as 600 meters. It is the second tallest tower in the world, second only to Tokyo Sky Tower. Extended information On November 25th, 2005, the construction of Guang Zhouta officially started. On August 27th, 2008, the 454m main tower of Guang Zhouta was capped, surpassing CITIC Plaza to become the tallest building in Guangzhou.