Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Design criteria of Hazen-Williams C value of water pipe system

상수관로의 유속계수 설계기준

  • Received : 2015.10.15
  • Accepted : 2015.12.07
  • Published : 2015.12.15
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Abstract

In this study, Hazen-Williams C value of pipes in wide waterworks system was estimated and statistically analyzed. Hazen-Williams C value of water pipe was predicted after 20 years of service period. From the results, it was found that C value of water pipe for treated water maintained higher value of 110 after 20 years of installation. Furthermore, it was found that velocity coefficients of steel pipe for less than and more than 20 years of installation were 117.7 and 109.3, respectively. C value of ductile iron pipe for less than and more than 20 years of installation were 118.1 and 114.2, respectively. In this study, it was also found that small value of C is used in the design of water pipe system. Therefore, excessively bigger size of pipe can be determined in the design of water pipe system. From the results of present study, optimum value of C can be used to avoid the oversized design of water pipe system.

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References

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Cited by

  1. Economic Valuation of Aging Water Main Improvements vol.11, pp.1, 2015, https://doi.org/10.1061/(asce)ps.1949-1204.0000428