Irrigation zoning & pipe sizing
Translate application rate, area and available source flow into zone count, cycle time and recommended pipe diameters. Hydraulics only — emitter and crop scheduling are out of scope.
Daily water demand
94,118L / day
= 94.1 kL·94.1 m³
Single-zone runtime
5.23hours
At full source flow of 18 m³/h.
Zones required
1zones
Single zone (5.23 h) fits comfortably in the 8 h window. Zoning optional.
Cycle per zone
8h / zone
= 1 ha / zone
Recommended pipe sizing · velocity ≤ 1.5 m/s
Mainline (full source flow)
75mm ID
= 1.13 m/s actual
Sized for 5 L/s.
Sub-main (½ flow split)
50mm ID
= 1.27 m/s actual
Sized for 2.5 L/s.
Lateral (¼ flow split)
40mm ID
= 0.995 m/s actual
Sized for 1.25 L/s.
Standard sizes recommended from HDPE / PVC catalogue: 16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125, 160, 200, 250, 315 mm. The split ratios assume a branched topology where flow halves at each level — for sequential zones both sub-main and lateral carry the full source flow. Use Friction Loss or Network Friction Loss to verify head loss across the run.