Starting from a square base, the all-concrete Tomorrow Square tower transforms itself into a diagonal square as it rises to a peak.
The building was finally completed on October 1st, 2003.
The foundations are 80-meter-long bored piles supporting a column mat.
Engineers of the exterior vertical support system were faced with a unique challenge as a result of this unusual shape. They chose flat slabs for the hotel floors and beam and slab construction for the office floors. A combination of shear walls and frame action stabilizes the slender tower laterally against wind and earthquake forces
The top floors of this building hold the highest apartments in Shanghai.
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