Normally, calculation unit that means the unit area for the treatment of freight, is used very popularly for the estimation of demand for logistics facilities. The purpose of this study is to show the calculation unit that is applicable flexibly under the various conditions of facilities. For this purpose, massive survey for 7,117 facilities and case studies in Korea and Japan are included in this study.
The results of this study can be summarized as follows :
facilities for agricultural goods have the largest unit, and cargo terminals have the smallest. In the consideration of construction time, old facilities have a larger unit than new facilities.
The larger the coefficient of utilization is, the smaller the unit is considering the coefficient of utilization. If the area of facilities is larger, the unit of warehouses is decreased, on the other hand, that of other facilities is increased a little. The introduction of high technology also makes the unit a little smaller, a survey shows the reduction in 18%.
These analyzed results are provided in range with the smallest and the largest unit that can applied flexibly in the consideration of conditions of facilities. In addition, this study recommends a standard unit that is a weighted average considering the freight volume.
Also, most of all existing units in Korea are included in the range of this study.
This study can be fundamental for the unification of very various units. But, it can't show the change of unit in the future by stages. This is the limitation of this study, that has to be solved by the continuous studies.