Abstract
Architectural design needs collaboration of team. Recently, it becomes possible to carry out projects between distributed sites by using computer and Internet technology. For development of support system for architectural design collaboration, this paper focuses to clarify a framework of social interaction process about architectural design in a team. In this paper, we described a hypothetical model of interaction process consist of three phases : A) Expression B) Evaluation C) Acceptance about idea and design problem. And on the hypothesis of the model, we analyzed communication data logged in Design Collaboration on the Web 2001 project by Protocol Analysis method. As a result, we could describe characteristics of member's behavior in each interaction phase and some patterns of combination of interaction phases.