(1) In proceeding papers, we showed that the whole time for design is different in proportion to size of building each king of architecture. and pointed that it is necessary to analyse the each activity particularly in a preliminary stage of design process in order to establish the design method of architecture. (2) In the present report, especially, we analysed the activities of actual design process from the subscribed project, by the design team of the division of design in this company, for Kyoto National Congress Hall, and applied some theories of network to this process, then proposed applying the new network theory to architectural design. (3) In part 1 of this report, we pointed out some questions about the actual design process, and showed that it is difficult to apply the conventional theories of network i. e. PERT, GERT, to an architectural design. Then we proposed the new technique for analysing the design the desing process, named DERT or Design Evaluation and Review Technique. The characteristiics of DERT is to use the generalized network, having some loops, some decision boxes and information sources necessary to decide whether to go on or back the process. (4) In part 2 of this report, we classified the activities of actual design, for which we applied the DERT network. As the results, we showed that in the preliminary stage of design process there are five phases : (a) confirmation of a given brief (b) aiming the design goal, (c) analysis, (d) synthesis, (e) presentation. (5) In this paper, the following problems are remained unsolved : (a) to make a diagram of the DERT network available for the general design process, (b) to develop the network calculation method of DERT, (c) to constuct the structural model of informations, which have been gained at each phase of design.
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