American Society of Civil Engineers


The Comparison of the Value Engineering Method and Hydraulic Method on Water Distribution Systems Performance Evaluation


by Cuimei Li, (China Institute of Water Resources and Hydropower Research, Beijing 100044, China; and Department of Environmental Science and Engineering, Suzhou University of Science and Technology, binhe road 1701#, Suzhou, China, 215011. E-mail: cuimeili@163.com), Shuping Li, (School of Environmental Science and Engineering, Tongji University, Shanghai 200092 China). E-mail: lishuping@tongji.edu.cn), Jianhua Wang, (China Institute of Water Resources and Hydropower Research, Beijing 100044, China), Hao Wang, (China Institute of Water Resources and Hydropower Research, Beijing 100044, China), and Shaoguang Zhang, (Department of Environmental Science and Engineering, Suzhou University of Science and Technology, binhe road 1701#, Suzhou, China, 215011. E-mail: 73220zsg@sina.com.cn)
Section: Watersheds, pp. 4514-4522, (doi:  http://dx.doi.org/10.1061/41173(414)469)

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Document type: Conference Proceeding Paper
Part of: World Environmental and Water Resources Congress 2011: Bearing Knowledge for Sustainability
Abstract: Value engineering is an evaluation method to assess the matching degree on performance and its cost of water distribution systems from the point of function achievement characteristics, which had been published from 2006 in some journal. The scientific of Value engineering method had been confirmed by a large number of facts in other applications, but in the evaluation of water distribution systems is still a new topic. The correctness, accuracy of its evaluation results is very crucial taking into account the complexity of water distribution network; therefore, we should use another mature method for checking its correctness and accuracy. Hydraulic evaluation method of water distribution systems was built on the basis of hydraulic calculation; theory is relatively mature, which is one of achiever way of water distribution systems functional assessment. Therefore, it can be used to check the conclusions of value engineering evaluation. In this paper, hydraulic evaluation methods include two contents: first is the overall performance evaluation by using total performance index of water network, which includes selection of state variables associated with different evaluation system, rendering performance curve for the calibration standard service level performance element variation of state variables, select inductive element level performance evaluation function to expand the pipe network by the performance index. Second, component’s performance evaluation which is based on the optimization calculation of water distribution systems, and use the hydraulic parameters ad the basic evaluation indicators. Last, pointed out the advantages and disadvantages of the hydraulic evaluation method and value engineering method by compare and analyze their respective results, drew the conclusion that value engineering method is better than hydraulic evaluation method.


ASCE Subject Headings:
Hydraulics
Water distribution systems
Value engineering