1995 Volume 60 Issue 476 Pages 45-50
This study focuses on a comparison of the life cycle costs (LCC) of two types of utility services ; one is the urban services buried under roads in association with a high-rise conglomerate residential building (hereinafter defined as "horizontal services") ; and another is a joint shaft having the functions equivalent to those of urban services, and the piping and wiring accommodated in it (hereinafter defined as "vertical services"). The following two points resulted from the study: 1. The LCC of vertical services was approximately 40 percent less, hence the economic efficiency of the former outstripped the latter, with the exception that residents had to share an unfair, large contribution. 2. The study results indicated the necessity that vertical services be provided and maintained as public properties so that residents living in high-rise buildings be exempted from sharing the unfair contribution.
