||This paper investigates methods for information management through the rationalapplication of IT within design. Empirical knowledge plays a significant role in thehuman reasoning process since previous experiences help in understanding andsolving new problems. Therefore, we intent to integrate the platforms of case-basedreasoning (CBR) and information structures into an information managementsystem for case-based design (CBD). In order to be of practical use, a CBD-systemought to handle all kinds of information created and used during the design process.Although the significance of standard product models is largely recognized today,heterogeneous weakly structured information e.g. construction briefs, calculationdocuments, 2D-drawings, and raw data: images, audio and video data, is stillnecessary in a CBD-system. We combine existing techniques (CAD-tools, wordprocessors, WWW, etc.) and standards (IFC, XML, etc.) into a prototype of a toolfor supporting the activities of architects and structural engineers. Structuredinformation is represented by IFC; XML manages weakly structured information,while WWW deals with raw data. In this way, the heterogeneous information usedin design can be managed and reused and CBD-systems can become a natural andvaluable tool for designers.