| K-factor (US) | Storage height (ft) | Ceiling height max (ft) | Min pressure (psi) |
|---|---|---|---|
| 14 | 25 | 30 | 50 |
| 16.8 | 25 | 30 | 35 |
| 16.8 | 35 | 40 | 60 |
| 22.4 | 35 | 40 | 40 |
| 22.4 | 40 | 45 | 52 |
| 25.2 | 40 | 45 | 35 |
| 25.2 | 43 | 48 | 40 |
Notes
- Cartoned unexpanded plastics — Group A. Different commodity classes require recalculation.
Source
NFPA 13 (2022) Table 23.3.1.
Cite this page
- APA
- FireTwin AI (2026). ESFR minimum design pressures by storage height. FireTwin AI. https://firetwin.eu/data/esfr-design-pressures
- IEEE
- FireTwin AI, "ESFR minimum design pressures by storage height," FireTwin AI, 2026. [Online]. Available: https://firetwin.eu/data/esfr-design-pressures