The purpose of this qualitative study was to investigate the role of social networks in the information behaviour of consulting engineers. Wilson’s (1999; 2000) encapsulating information behaviour definition, and the contribution other researchers made to it, was used to develop an information behaviour framework for the study. In an in depth literature review it was learnt that engineering work is about team work and that engineers rely on their personal knowledge and expertise, as well as the knowledge and expertise of other experts in the field. This was confirmed by the findings of the empirical study. Throughout the literature review it was shown that the interaction between elements in the context and the personal dimension gives rise to information needs, which in turn prompt certain information behaviour activities. Narrative inquiry, a relatively new information behaviour data collection and analysis technique, guided the study. Fifteen consulting engineers who are involved in building projects participated in the study. Two chapters were dedicated to data analysis where the engineers’ stories of an engineering project were re-storied to learn more about the context of engineering work and how engineers operate. The findings revealed that the team members of projects involving consulting engineers come from different organisations. It was found that consulting engineers collaboratively seek, gather, use, communicate and share information. Interdependency emerged as a prominent element in the effective structures of consulting engineers’ personal dimension and evidently plays an important role in collaborative information behaviour in consulting engineers’ team work. It serves as a contributing factor in the natural forming of their social networks, which proved to be important sources of engineering information. The findings contributed to the refinement of the information behaviour framework developed for the purpose of this study. The framework graphically illustrates consulting engineers’ information behaviour. This study contributes to an understanding of the important role social networks play in consulting engineers’ successful accomplishment of engineering projects in everyday life / Information Science / D.Litt. et Phil. (Information Science)