OPTIMUM THREE-DIMENSIONAL URBAN FORM CONTAINING COMPACT CITY SYSTEM

The purpose of this article is to obtain the optimum three-dimensional urban form when compact city system is formed. This article assumed hierarchical district centers and transportation system according to the stage of life needs. As a result, the optimum urban form minimizing travel costs shows that the ratio of vertical travel cost to horizontal one determines the urban area and the distance between the district centers. This result suggests that forming a concentrated high-rise city with skyscrapers depending on elevators may be less efficient than developing the urban area in the horizontal direction by utilizing the transportation.