8-storey office building and/or public access building above two common basement levels with a surface area of 4000 m² per level (320 parking spaces in total) with an inter-company restaurant on the ground floor.
Foundations by means of piles bored with a hollow auger and full-height peripheral basement wall of reinforced secant piles to withstand earth pressure. Column-beam concrete structure and reinforced concrete staircase towers for lift/stair core walls providing general windbracing. Floors constructed of honeycomb slabs and prestressed permanent formwork concrete slabs.
Images © Philippe Ruault