Hazen-Williams Head Loss due to Friction
This head loss due to friction formula is used in Hazen-Williams equations.
Hazen-Williams Head Loss due to Friction formulas |
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\( h_f = 4.73\; l_p \; ( Q\;/\;C) ^{1.852} \;/\; d^{4.87} \) (US units) \( h_f = [\;4.73 ( Q\;/\;C)^{1.852}\;] \;( l_p\;/\;d^{4.87} ) \) (US units) \( h_f = [\;10.7 ( Q\;/\;C)^{1.852}\;] \;( l_p\;/\;d^{4.87} ) \) (SI units) |
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| Symbol | English | Metric |
| \( h_f \) = Head Loss due to Friction | \(ft\) | \(m\) |
| \( Q \) = Flow Rate | \(ft^3\;/\;sec\) | \(m^3\;/\;s\) |
| \( C \) = Hazen-Williams Coefficient | \(dimensionless\) | \(dimensionless\) |
| \( l_p \) = Pipe Length | \(ft\) | \(m\) |
| \( d \) = Inside Diameter of Pipe | \(in\) | \(mm\) |
Tags: Pipe Sizing Head Hazen-Williams