Hydraulic design of large-diameter pipes

Fabían A. Bombardelli, Marcelo H. Garcia

Research output: Contribution to journalArticlepeer-review


The Hazen-Williams formula is frequently used for the design of large-diameter pipes, without regard for its limited range of applicability. This practice can have very detrimental effects on pipe design, and could potentially lead to litigation. Available evidence shows that the application of the formula is accurate only if the operation of the pipe is located within the transition or smooth, turbulent-flow regimes. Most working ranges for water-supply pipes usually fall outside such conditions. This paper presents an analysis which highlights the potential implications of current use of the Hazen-Williams formula for the design of large-diameter pipe systems.

Original languageEnglish (US)
Pages (from-to)839-846
Number of pages8
JournalJournal of Hydraulic Engineering
Issue number11
StatePublished - Nov 2003


  • Pipe design
  • Pipe flow
  • Resistance coefficients
  • Roughness

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Mechanical Engineering


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