Design parameters
| Standard | EN 12845 |
| Hazard class | OH2–OH3 |
| Design density | 5.0–7.5 mm/min |
| Area of operation | 144 m² |
Design notes
- Stockrooms commonly drive the most onerous design area
- Separate dry system for unheated loading docks
- Coordinate with retail tenant fit-out guides
- Public-facing heads should be concealed or chrome-finished
Typical equipment
- Upright + concealed pendent K80/K115
- Dry pipe valve for loading dock
- Electric pump set
- Hydrant ring 4 bar
How FireTwin AI handles retail store projects
Upload your floor plan or model the building footprint directly. FireTwin AI classifies rooms, applies the EN 12845 OH2–OH3 grid, runs the hydraulic calculation from the most remote area back to the pump, and produces a priced BOM — all re-verified on every edit.