The rapid evolution of technologies and interaction devices has enabled the emergence of interactive systems merging real and virtual worlds. These systems are characterized by new interaction forms. They involve new constraints that must be considered in the development process. This paper presents a set of elements and concepts to design augmented reality systems. The aim is to integrate human-computer interaction practices in the software engineering domain. Our works are focused on the initial phase of development, into which we have introduced a new concept: interactional space. The aim is to take into account the specificity of augmented reality in the information system design. Thus, new relations are established between business and interactional spaces. Models and approaches are developed to highlight the interaction objects in the development process. A case study is presented in order to validate our contributions. We develop an interactive tabletop intended to manage digital documents for maintenance assistance in industrial context.