Mexico Square multi-use building project is an upcoming landmark development at Addis Ababa, Ethiopia. It consists of three residential towers and a commercial tower, connected with five basements and seven podium levels.

The rectangular towers contain a central core and only peripheral columns to minimise structural interruptions to the floor plate, optimising its use and improving flexibility of the space. Although the core alone works efficiently for the 130m high residential towers, the immense loads acting on the 200m high commercial tower required additional stiffening provided by two levels of outriggers.

To create large column-free spaces at the podium level, every alternate external column is eliminated through the use of a trussed transfer system. These columns are further transformed into blade columns below the ground floor to accommodate a smoother parking arrangement.

Finally, through extensive soil-structure interaction studies, the challenge produced by highly varying hard rock levels have been overcome adopting a combination of a raft, piled raft and piled foundations.