A Study on the Change of the Planning Elements of a Neighborhood Unit-Focused on the Physical Properties of the Planning Elements-

As the times change, some of the planning elements of a neighborhood unit have been maintained but some have changed. The aim of this study is to consider changes in the planning elements of a neighborhood unit with the times, focusing on physical properties and then suggest directions of the future neighborhood unit plan. The process is as followed. First, subjects were selected through a precedent research analysis. Second, subjects were compared and analyzed through six criteria of C.Perry, which was first presented as the physical and specific framework of the neighborhood unit. Finally, the maintained and the changed planning elements were derived, and then directions of the future neighborhood unit plan were proposed. This study has shown that the maintained planning elements include radius and area of a neighborhood unit, role of boundary, overall layout of openspace considering walking, role and location of public facilities, necessity of commercial facilities, internal road system to secure residents' safety from cars. And changed planning elements include population and density considering the context of the times and regions, road hierarchy and facility type along boundary, ratio and facility type of openspace, public facility type, location of commercial facilities and relationship to residences, method of internal road system, block size and pattern.