A classification system of atriums was developed as a step toward formulating policy guidelines for planning and its effectiveness in explaining manager and user evaluation as well as management and use patterns was tested. Form, building-use and management data from a 194-sample manager questionnaire survey were employed in this quantitative analysis together with use data from a 25-sample user questionnaire with 1,515 answerers and on-site counting of walking and staying users. Three-way classification with seven subgroups was thus proposed under criteria interpreted as developer types, openness to the public, commercialism, building use and freedom for staying.
