310 m² garden — mains water
A complete irrigation design for a typical plot: sprinkler layout, zoning against a 20 l/min mains supply, bill of materials and material cost.
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At a glance
- Watered area
- 305 m²
- Sprinklers
- 33
- Zones
- 10
- Coverage
- 99.6%
- Uniformity (CU)
- 74%
- Water supply
- 3.2 bar · 20 l/min
- Pipe
- 278 m
- Overspray outside lawn
- 9.3 m²
- Material cost
- 5,780 zł
- Estimated labour
- 58.9 h
The rule this demonstrates
Head-to-head spacing (R1): every sprinkler's throw must reach the next sprinkler, not the edge of its spray. A sprinkler applies the least water at the end of its throw, so its neighbour has to make up the difference.
What this design does not show
Uniformity (CU) is 74%. Coverage does not mean an even water dose: compare both metrics and check dry areas before installation.
Zones and hydraulics
| Zone | Heads | Flow | Pipe | Velocity | Pressure at head |
|---|---|---|---|---|---|
| Valve 1 | 4 | 16.4 l/min | Ø20 | 0.9 m/s | 3.2 bar |
| Valve 2 | 1 | 12 l/min | Ø20 | 0.6 m/s | 3.2 bar |
| Valve 3 | 4 | 14.1 l/min | Ø20 | 0.8 m/s | 3.1 bar |
| Valve 4 | 3 | 15.8 l/min | Ø20 | 0.8 m/s | 3.1 bar |
| Valve 5 | 2 | 11.8 l/min | Ø20 | 0.6 m/s | 3.1 bar |
| Valve 6 | 4 | 8.2 l/min | Ø20 | 0.4 m/s | 3.2 bar |
| Valve 7 | 10 | 12 l/min | Ø20 | 0.6 m/s | 3 bar |
| Valve 8 | 3 | 6.1 l/min | Ø20 | 0.3 m/s | 3.2 bar |
| Valve 9 | 1 | 3.3 l/min | Ø20 | 0.2 m/s | 3.2 bar |
| Valve 10 | 1 | 0.9 l/min | Ø20 | 0.1 m/s | 3.2 bar |
Bill of materials
| Item | Qty |
|---|---|
| Rain Bird R-VAN RVAN24 (180°) | 5 szt |
| Rain Bird R-VAN RVAN24-360 (360°) | 2 szt |
| Hunter Pro-Spray PRO-4A (180°) | 2 szt |
| Hunter MP Rotator MP2000 (90°) | 1 szt |
| Hunter MP Rotator MP1000 (90°) | 5 szt |
| Hunter Pro-Spray 8H (180°) | 3 szt |
| Hunter MP Rotator MP1000 (180°) | 4 szt |
| Hunter Pro-Spray PRO-6A (270°) | 1 szt |
| Rain Bird R-VAN RVAN18 (90°) | 2 szt |
| Hunter Pro-Spray PRO-4A (270°) | 2 szt |
| Hunter Pro-Spray 5H (180°) | 1 szt |
| Rain Bird R-VAN RVAN14 (270°) | 3 szt |
| Rain Bird R-VAN RVAN14 (90°) | 2 szt |
| Rain Bird 1800-04" | 14 szt |
| Hunter Pro-Spray 04" PRS30 | 9 szt |
| Hunter Pro-Spray 04" PRS40 | 10 szt |
| Swing pipe connection Ø16 mm | 33 szt |
| PE pipe 20 mm | 278.2 m |
| Solenoid valve (per zone) | 10 szt |
| Valve box (manifold, up to 4 valves) | 3 szt |
Material prices are indicative (engine price list) and exclude labour.
How this design was made
The site geometry (lawn, house, paths, beds, tap) was drawn the way a user would draw it. Everything else — sprinkler placement, nozzles, arcs, zoning, pipe routes, hydraulics and the bill of materials — was computed by the IrriForge engine from the Hunter and Rain Bird design manuals. The numbers on this page are generated by a script in the repository, so a change in the engine or the catalogue changes them immediately.
Variant “V4 · Clean layout · declared gaps” of 2 offered by auto-design.