The contractor appointed Davy Sukamta & Partners to design the up-down construction system for the basement construction, with a plan to catch-up the tight schedule. The tower must proceed uninterruptedly when the mat foundation has been cast, requiring one part of the basement structure to be designed with up-down method. In this part, the king-posts must be able to take the load of ground floor plus 4 floors above.
The top-down and up-down basement construction method was finished in December 2021.