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Lateral Friction Loss
Lateral Friction Loss
The Equation
This calculator uses this formula to determine the Total Flow Rate, Total Pipe Length, and Friction Loss.
Total Pipe Length
Where:
= Total Pipe Length (ft)
= Number of sprinklers per line
= Distance between sprinklers, sprinkler spacing (ft)
Â
Total Flow Rate
Where:
= Total Flow Rate (gpm)
= Sprinkler flow rate (gpm)
= Number of sprinklers per line
Â
Lateral Friction Loss
Where:
= Friction Loss (psi)
= Total Flow Rate (gpm)
= An arbitraty number to account for the pipe type (Plastic: 150, Aluminum: 120)
= Pipe Size (in)
= Total Pipe Length (ft)
= Number of sprinklers per line
Reference: Washington State University
