This study aims to clarify the relationship between seated area features and floor plan compositions of open reading spaces found in 55 Japanese public libraries completed since 2000. These elements are approached from the viewpoints of floor plan forms, bookshelves area arrangement, seated areas, and seating arrangements in seated areas. In particular, the statistical analyses of 792 seated areas – based on the nature of users’ coexistence with the viewpoints of socio-petal, socio-fugal, and side by side – eight types of seat arrangements in seat areas and the relationship between seat arrangement types and floor plan form types can be found.
