Calculate ET and Plant Water Need
30 minutesCalculate ET and Plant Water Need — follow green roofing best practices and document each step carefully.
Intermediate1 week
Green Roof Irrigation Guide
Complete green roof irrigation guide for green roofing practitioners. Step-by-step workflow with 4 stages and 4 specialized tools. Covers calculate et and plant water need, select drip or sub-irrigation layout, zone by exposure and depth.
irrigation designers
Workflow
Select Drip or Sub-Irrigation Layout
1 hourSelect Drip or Sub-Irrigation Layout — follow green roofing best practices and document each step carefully.
Zone by Exposure and Depth
2 hoursZone by Exposure and Depth — follow green roofing best practices and document each step carefully.
Set Controller Seasonal Schedule
1-2 daysSet Controller Seasonal Schedule — follow green roofing best practices and document each step carefully.
Tools Used
Checklist
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Planning
Preparation
Safety
Execution
Quality
Documentation
Reference Materials
Green Roof Irrigation Design StandardStandard
Follow relevant standards and green roofing field practices for green roof irrigation design. Consult local codes where applicable.
Material Quantity FormulaFormula
Volume = length × width × depth — confirm units before ordering.
Green Roof Irrigation Design BenchmarksTable
Key parameters and target values for quality assurance.
| Parameter | Target | Notes |
|---|---|---|
| Moisture | Within spec | Test before cover |
| Compaction | Uniform layers | ≤150 mm lifts |
| Safety | PPE worn | Stop if unsure |
Load First
Calculate saturated soil and plant load before ordering media — overweight roofs fail structurally.
Membrane Integrity
Protect waterproof membrane from punctures during every layer install.
Fall Protection
Use harness and guardrails whenever working within 6 feet of roof edge.
Safety Notes
- Overwatering adds load and leak risk.
- Winterize lines in freeze climates.