Superstructures are building components located above ground level. Posts, walls, beams, floors, etc. must be designed in compliance with "Eurocodes" standards. Depending on the type of project, metallic construction, mixed construction or timber construction will be considered. The materials chosen, such as terracotta, plaster or steel, meet specific needs in terms of aesthetics, cost and environmental quality. Last but not least, concrete, a basic component, offers a particularly wide range of mechanical properties and possibilities.