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Lateral Friction Loss
This is for a sprinkler lateral with sprinklers on a regular interval and is plugged at the end.
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)
Total Flow Rate
Where:
= Total Flow Rate (gpm)
= Sprinkler flow rate (gpm)
= Number of sprinklers per line
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