Agriculture Irrigation Calculators
Precipitation Rate
1. Enter the sprinkler flow (gpm):
2. Enter the sprinkler spacing (ft):
3. Enter the lateral spacing (ft):
RESULTS
Precipitation Rate (in/hr) = 0in/hr
GPM per Acre = 0gpm
Required Sprinkler Flow (gpm)
1. Enter the sprinkler spacing (ft):
2. Enter the lateral spacing (ft):
3. Enter the average precipitation rate (in/hr):
Note: precipitation rate = gpm per acre / 454
Note: precipitation rate = gpm per acre / 454
RESULTS
Required Sprinkler Flow (gpm) = 0gpm
GPM per Acre = 0gpm per acre
Nozzle Discharge
1. Enter the sprinkler nozzle pressure (psi):
2. Enter the nozzle diameter, decimal (in):
RESULTS
Nozzle Discharge (gpm) = 0gpm
Note: Discharge Coefficient = .97
Nozzle Required Diameter (in)
1. Enter the required nozzle flow (gpm):
2. Enter the sprinkler nozzle pressure (psi):
RESULTS
Nozzle Required Diameter (in) = 0in
Note: Discharge Coefficient = .97
Lateral or Manifold Pipe Friction Loss
1. Enter the sprinkler or lateral output flow (gpm):
Note: Assumes fixed outlet flow.
2. Enter the number of sprinklers or laterals:
3. Enter the sprinkler or lateral spacing (ft):
4. Enter the pipe inner diameter (in):
5. Enter the pipe Hazen-Williams C value:
Note: PVC = 150, Aluminum w/ couplers = 120
Note: PVC = 150, Aluminum w/ couplers = 120
RESULTS
Lateral or manifold pipe friction loss (psi) = 0psi
Total Flow = 0gpm
Max. vel. = 0fps
Lateral or Manifold Diameter (in)
1. Enter output flow of each sprinkler (gpm):
Note: Assumes fixed outlet flow.
Note: Assumes fixed outlet flow.
2. Enter the number of sprinklers or laterals:
3. Enter the sprinkler or lateral spacing (ft):
4. Enter the pressure loss tolerance:
5. Enter the pipe Hazen-Williams C Value:
Note: PVC = 150, Aluminum w/ couplers = 120
Note: PVC = 150, Aluminum w/ couplers = 120
RESULTS
Lateral or manifold pipe diameter (in) = 0in
Total Flow = 0 gpm
Max. vel. = 0 fps
Mainline Pipe Friction Loss (psi)
1. Enter the pipe flow (gpm):
2. Enter the pipe inner diameter (in):
3. Enter the pipe Hazen-Williams C value:
Note: PVC = 150, Aluminum w/ couplers = 120
Note: PVC = 150, Aluminum w/ couplers = 120
4. Enter the pipe length (ft):
RESULTS
Mainline Pipe Friction Loss (psi) = 0psi
Pipe velocity = 0fps
Mainline Pipe Diameter (in)
1. Enter the pipe flow (gpm):
2. Enter the pipe length (ft):
3. Enter the pipe Hazen-Williams C value:
Note: PVC = 150, Aluminum w/ couplers = 120
Note: PVC = 150, Aluminum w/ couplers = 120
4. Enter the pressure loss tolerance (psi):
Note: Pipe velocity over 5 fps will be alerted
Note: Pipe velocity over 5 fps will be alerted
RESULTS
Mainline Pipe Diameter (in) = 0in
Pipe velocity = 0fps
Pipe Velocity (fps)
1. Enter the pipe flow (gpm):
2. Enter the pipe inner diameter (in):
RESULTS
Pipe Velocity (fps) = 0fps
Pump Brake Horsepower Required (hp)
1. Enter the pipe flow (gpm):
2. Enter the pipe diameter (in):
3. Enter the pump efficiency (%):
RESULTS
Pump Brake Horsepower Required (hp) = 0hp
Total Head Pressure = 0psi
Water Hammer Surge Pressure - PVC pipe (psi)
1. Enter the pipeline sudden velocity change (fps):
Note: Assumes instantaneous valve closure
Note: Assumes instantaneous valve closure
2. Enter the PVC pipe Standard Dimension Ratio:
(SDR Class100 = 41, Class125 = 32.5, Class160 = 26, Class200 = 21)
(SDR Class100 = 41, Class125 = 32.5, Class160 = 26, Class200 = 21)
RESULTS
Water Hammer Surge Pressure - PVC pipe (psi) = 0psi
Surge wave velocity =0fps
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