Rainfall Intensity Rechner — Formel
## Rainfall Intensity
Rainfall intensity is the rate of rainfall, critical for sizing stormwater drainage systems.
### Formula
**i = P / t**
where P is the total depth of rainfall (mm) and t is the duration (hours). Shorter, more intense storms require higher drainage capacity. Design storms are typically characterised by intensity-duration-frequency (IDF) curves.
Rainfall intensity is the rate of rainfall, critical for sizing stormwater drainage systems.
### Formula
**i = P / t**
where P is the total depth of rainfall (mm) and t is the duration (hours). Shorter, more intense storms require higher drainage capacity. Design storms are typically characterised by intensity-duration-frequency (IDF) curves.
Lösungsbeispiel
50 mm of rain over 30 minutes.
- Duration in hours = 30 / 60 = 0.5 h
- Intensity = 50 / 0.5 = 100 mm/h
- This is a relatively intense rainfall event.