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Posted: Wed Jun 17, 2009 1:22 pm
by Bilabonic
Hi

I am in the process of removing tonnes of earth since my garden slopes with house on lower level.

I will be putting in french doors and new patio which will be on the lower level.

Where is the best place to put drainage gulleys ?

On the house side or retaining wall side ?

Also how do you know how many to have.

Here are the prelim plans - http://ext.pavingexpert.com/cgi-bin....;t=6914

I was thinking a long channel the length of the property along the horizontal grey line with the patio sloping towards it ?

This would also lead to a manhole drain as well.

Any thoughts ?

Cheers

Posted: Wed Jun 17, 2009 10:56 pm
by Dave_L
That's what I'd do - run the channels around the building as/where required. Make sure your 150mm below DPC is maintained.