Design Flow Rate (rainwater drainage)
Revision as of 12:41, 2 May 2017 by Joceil.infante (talk | contribs)
In the context of rainwater drainage, the computation of design flow rate can be categorised into the following:
- Effective plan catchment
- Elevation catchment (for wind driven rain)
Design flow rate (l/s) = Effective Catchment Area (m.sq.) x Rainfall Intensity (mm/hr) / 3600
The method of calculating Effective catchment areas can be referred to Catchment area (effective) (roof drainage).
References:
- BS EN 12056-3:2000
