Learning up on how to design a vortex drop in a sewer network.
Found something in the text book which I just couldn't make work in the spreadsheet. Eventually told my colleague the text book must be wrong.
Later consulted my boss. 'Why can't I get this to work?' I ask. 'The text book is wrong' he says.
So it's gratifying to be right for once and not a complete idiot.
But don't worry; it's not a major error in the book; just the expression that gives you the range of validity for the main equation, and it gives answers that are obviously wrong so no one will have designed a vortex drop with it.
Which is a good thing, given that my current project is just £18 million preparatory work for the main £30 million project to be done on the next five years.
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