Abstract
It is not suitable to use the values of water demand based on one factor such as the using water volume per unit floor area or per unit person in building, for planning of water supply equipments. Because, the water demands are influenced by the various factors due to the properties of buildings. The purpose of this study is to introduce the equations to estimate the water demand in the various buildings. This paper describes on the office buildings as the Part 1 of which contents are given below. Based on the investigation of water uses in office buildings being conducted in the 9 major cities in Japan, we clarified the properties of building and equipment, the conditions of water demand and the water conservation and the opinions of persons in charge of building maintenance for water uses. We analysed these factors using the Quantity Theory Cluster III and clarified the relation between these item-categories. After analyzing these factors related to the water demand, we introduced multidimensional equations to estimate the water demand per unit floor area and per unit person in building using the multiple regression analysis.
