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Design Flow Ascertaining the application of probabilistic methods to the residential district water supply

Author: ZhangMingHua
Tutor: GaoYuFei
School: Xi'an University of Architecture and Technology
Course: Municipal Engineering
Keywords: building of residents frequency of fixture of use watre supply reliability program operation simulation formula Thesif: Application Fundament
CLC: TU991.02
Type: Master's thesis
Year: 2001
Downloads: 107
Quote: 5
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Abstract


The determination of water supply second flOw is one Of the most importantsubject in bulding water supply and drainage and is the most frequentn question in designing.How to make the design flow accord with actual situation needs inquiring into.Manyexperts and designers hold than the design flow provided ty the normal formal is larger andconservative. With the proposal and advico of CECS-TC24 and CCE-WWE-P, the paperpresents a calculation formula based on probability method with studying theHunter’ method Russian method deeply.According to investigation、program operation and hydraulics, the paper makesquantification about the twoo important factors influencing the design flow──ferquency offixtuer use p and water supply reliability Pr. The paper presents that water supply reliabilitydoes not make marked influence, so the value of Pr is supposed as 0.99, while the frequencyof fixture use influences markedly. So it is more important to get a proper valu frequencyof fixture use.The paper discusses the frequency of use from two different aspects. The first one isthat the value of frequency of use is determined by times of water use、the Style of fixtures、the number of people of use and the number of fixtures. The other is that the value offrequency of use is determined by water quota、the number Of people of use and the numberOf fixtuers. With analyzing synthetically and appraisal, the second one is more convincing and reasonable in using different fixtures.According to the type of buildings,with many data,es draw such conclusion that the equivalent of fixtures N and frequency of use p are interrelated to the design flow qg.We get the simulation formual.Analyzing this formula with normal formula、revised formula and formula ofAmerican code and Russian code, I thind this simulation formula can be recommeng for its s~ calCUallon. wch ase and wt ed aCtUal situation.

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CLC: > Industrial Technology > Building Science > Municipal Engineering > Water supply project ( on the Water Works ) > General issues > Design, graphics
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