Hydraulics and sanitation
Head loss (Hazen-Williams) – rising mains
Formulas
J = 10,67 × Q^1,852 / (C^1,852 × D^4,87) [SI, m/m]
ΔH = J × L ; HMT ≈ H_géo + ΔH (+ pertes singulières)
Assumptions
- Empirical formula valid for water at ambient temperature, turbulent flow, D ≥ ~50 mm. TDH excludes minor losses.
Head loss (Hazen-Williams) – rising mains
Fill in the inputs and run the calculation: results and every intermediate step will appear here.
These tools provide estimates and calculation aids. They are neither design calculations nor an engineering approval: any design or safety decision must be checked by a qualified professional against the applicable standards.
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