The built environment, buildings, bridges, tunnels, towers, train stations and of course airports, are forming a large portion of our modern infrastructure. The size and the life time of our built infrastructure lead to a highly visible and permanent impact for our natural and urban environment. Combined with the complex functional and economical requirements of our modern civilization an integrative planning in interdisciplinary teams is necessary. The realisation of these requirements beginning from the preliminary design up to the supervision of the assembling will be exemplary described and illustrated.