Abstract
This study is to analyse planning condition quantitatively by statistical method to improve the number of users, the rate of general users and user's satisfaction in open space of building site, and make it predictable these indicators of use evaluation and environmental mentality evaluation at the planning and designing stage. Also, it is to suggest design guidelines applicable to the planning of open space or the improvement of institutions by considering the planning conditions comprehensively for improving the indicators discussed separately. Comprehensive overview of the planning conditions to improve plural indicators shows that the important planning conditions are scale, relationship with the surroundings such as station or street, the shape of open space with a good accessibility from road, attached facility to provide the purpose of use or a comfortable seating area. In particular, as a representative planning condition to improve three indicators at the same time, relationships with the surroundings and shape of open space can be cited. The relationships with the surroundings is the evaluation index for convenience such as distance from subway stations or possibility of shortcuts. The shape of open space is the index explaining the relationship with pedestrian pathway, and it can be considered as evaluation index for urban public space on the extension of street.