Analysis of the structure thanks to a global calculation model of the structure (steel structure, prestressed concrete shell and glass facade), integrating the original construction phase. Design of the reinforcing frame in steel structure and prestressed concrete before hydro-demolition of the central part of the concrete shell and re-anchoring of the existing prestressing.

Study of the adaptations of the structure of the glass façade “runway eye” made of curved monolithic glass. These glass panes are held by a stainless steel structure made up of rods and posts anchored to the lower concrete shell and a network of slightly prestressed orthogonal cables.