Perda de carga pela equação de Hazen-Williams
Calculates the head loss
Calculates the pipe extension
Calculates the flow
Calculates the diameter
Calculates the Hazen-Williams C factor

Input data

Diameter

Flow

Length

Hazen-Williams constant (C)

Output data

Head loss

Description

Performs hydraulic calculations using Hazen-Williams formula

hf=10.643(QC)1.85LD4.87\begin{equation*} h_f = 10.643 \left(\frac{Q}{C}\right)^{1.85}\frac{L}{D^{4.87}} \end{equation*}

There are 5 options:

  • Calculates the heado loss
  • Calculates the pipe extension
  • Calculates the flow
  • Calculates the diameter
  • Calculates the Hazen-Williams C factor

Head loss calculations using the Hazen-Williams equation

MaterialMinimum CCMaximum CCAverage CC
Aluminum130150140
Asbestos Cement140140140
Asphalt Lining130140135
Brass130140135
Brick sewer9010095
Cast-Iron - new unlined (CIP)130130130
Cast-Iron 10 years old107113110
Cast-Iron 20 years old8910094.5
Cast-Iron 30 years old59047.5
Cast-Iron 40 years old648373.5
Cast-Iron, asphalt coated100100100
Cast-Iron, cement lined140140140
Cast-Iron, bituminous lined140140140
Cast-Iron, sea-coated120120120
Cast-Iron, wrought plain100100100
Cement lining130140135
Concrete100140120
Concrete lined, steel forms140140140
Concrete lined, wooden forms120120120
Concrete, old100110105
Copper130140135
Corrugated Metal606060
Ductile Iron Pipe (DIP)140140140
Ductile Iron, cement lined120120120
Fiber140140140
Fiber Glass Pipe - FRP150150150
Galvanized iron120120120
Glass130130130
Lead130140135
Metal Pipes - Very to extremely smooth130140135
Plastic130150140
Polyethylene, PE, PEH140140140
Polyvinyl chloride, PVC, CPVC150150150
Smooth Pipes140140140
Steel new unlined140150145
Steel, corrugated606060
Steel, interior riveted, no projecting rivets110110110
Steel, projecting girth and horizontal rivets100100100
Steel, vitrified, spiral-riveted90110100
Steel, welded and seamless100100100
Tin130130130
Vitrified Clay110110110
Wrought iron, plain100100100
Wooden or Masonry Pipe - Smooth120120120
Wood Stave110120115

Data extracted from: https://www.engineeringtoolbox.com/hazen-williams-coefficients-d_798.html. (Last seen at 08/28/2023)

References

  • Fonte: AZEVEDO NETTO, J. M. de; FERNANDEZ Y FERNANDEZ, Miguel. Manual de hidráulica, 9.ed. São Paulo: Blucher, 2015.