ABSTRACT
This chapter describes the development of the concept by explaining the phases that the engineer should take and examining the basis for these phases. Figure 4.1 schematically shows the components that are the basis for the structural concept, and puts them in the context of the elaboration of a bridge project. The figure also highlights where these components are addressed in this book, either in this chapter or in parts of other chapters dedicated to the structural concept (Chap. 5-8) and to the analysis and design (Chap. 9-15) of beam bridges.
