I'm currently stuck with the 'design storm period intensity' part of the SUDs and am hoping to avoid the need for a 'drainage engineer/consultant'.
I can happily do a drive and garden drainage design using SUDs principles with a dose of common sense, but the learning curve for jargon and calculations is outside my comfort zone. It seems there are Excell sheets for this but I'm afraid of garbage in garbage out. Has anybody got a Noddy's guide?