Abstract
Aim of this study is to search problems of assembly facilities. This report, especially, analyses the utility circle in each function of facilities of each level. The conclution are follows; 1. The utility circle varies with the functions, so, in the planning of arrangement of facilities, to consider utility circle separately by functions is more rational. 2. Participation in lectures; Facilities of upper level and lower level interact one another according to distance. 3. Use of rental-room; The selection of facilities of each level relate to the extent of each group. However, facilities of middle level are useful for small extent groups.
