Knowledge management is a research topic that encompasses various domains. It is proved that both knowledge codification and social interaction can improve knowledge sharing in an organization, and IT has always been a powerful technology to support knowledge management cycle, especially on knowledge capturing, storage or even sharing. Knowledge engineering is an engineering science that represent knowledge into computable forms, in order to solve a problem in a specific domain, it offers useful approaches to obtain and model domain knowledge. In this paper, the knowledge produced in project meetings will be studied, and a semantic network based classification model will be proposed to support knowledge management, followed by two detailed case studies.