Rainfall Rate (R) (mm/s)
The Rainfall Rate describes the volume of rainwater from a particular design storm event which will fall on a drainage Catchment Area. This is commonly given in mm/hr which should be converted to mm/s by dividing by 3,600.
In the UK the Rainfall Rate can be taken from tables given in the Flood Estimation Handbook. The Rainfall Rate is dependent on the following factors;
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Full Drainage Design Suite
Full drainage design suite (50% Discount) including 7 spreadsheets;
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