You've Got To Laugh Haven't You?
News5 mins ago
No best answer has yet been selected by hugoboss. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.I had a similar problem and laid a drainage channel like the one in the small picture at the bottom of this page. Fortunately, I was able to connect it to the collection "pit" of the drain-pipe from the roof.
http://www.caro.co.uk/index.php?pageid=572§ion=Caro%20Flow