Abstract
Outdoor common space in appartment houses, which are built in urban districts and supplied by private enterprises, is important for the residents who live there and also for the surrounding environment. However, this outdoor common space is not well organized nowadays. This paper deals with structure of the outdoor common space by the form and area, and the correlation between the structure and the residents' utilization. The results of those analyzes are as follows : 1) Outdoor common spaces' form can be classified into 15 types by means of site plan and access type, and its area varies according to those types. 2) The factors which influence those oudoor common spaces' form differences are shown by the size and shape of the site, the number of roads faced by the site, and the orientation of the road which connects to the main entrance. Also the area is influenced by the size of the site. 3) The frequency of residents' utilization of outdoor common space is related to this space's location, area, type of use and access.
