The objective of this study is to determine the appropriate size of the inlet pipe diameter and thereby conduct hydraulic analysis for the Korean water distribution network. To this end, the data tables for equivalent pipe diameters and outflow rates presently employed in Korea were adopted. By incorporating the table of equivalent pipe diameters, it was found that the size of the inlet pipe diameter was overestimated, which can cause shortage of water pressure and malfunctioning or insufficiency of outflow rate in the corresponding adjacent region. However, by conducting hydraulic analysis based on the table of outflow rates, relatively reasonable flow rates were observed. Furthermore, by comparing the real demand-driven analysis (RDDA) approach and demand-driven analysis (DDA) approach toward managing the huge water demand, it was observed that DDA could not effectively respond to real hourly usage conditions, whereas RDDA (which reflects the hourly effects of inlet pipe diameter and storage tanks) demonstrated results similar to that of real water supply.

1. 서 론
2. 재료 및 방법
    2.1. 상수 급수관의 관경
    2.2. 관망 수리해석 방법
    2.3. 조건별 적용된 관망구성도
3. 결과 및 고찰
    3.1 상수 급수관의 관경
    3.2. 관망수리해석
4. 결 론
REFERENCES

• 신성교(부산가톨릭대학교 환경공학과) | Sung-kyo Shin (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea) Corresponding autho
• 김은주(부산가톨릭대학교 환경공학과) | Eun-ju Kim (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea)
• 최시환((주)삼영기술) | Si-Hwan Choi (Samyoung Technology, Busan 47297, Korea)