Term of the Road Dictionary

roughness coefficient

  • Language : PIARC Road Dictionary / English
  • Theme : Roads Drainage and Sewerage
  • Definition : Coefficient representing the frictional resistance to flow in a hydraulic structure. Note: Strickler coefficients are identified as K and have values greater than 1, whereas Manning coefficients are identified as n (n = 1/K) [Egis/PIARC].

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