The Brew Cabin

Posted: **Fri Mar 05, 2010 1:49 pm**

Im just about to start my own drainage in my back garden. I have been researching the site an bought the book aswell,to help me complete the task.

My house is a 1950's semi with other properites to the sides and rear , the back garden is about 10m x 7m an surprise surprise its clay soil.

So ive gatherd that in these conditions a soakaway wont help, and i dont have space for a catchment pit due to the size of the garden, an the fact i am surrounded by properties on all sides.

So i was thinking of laying rigid, perforated on top pvc pipes in a herringbone type pattern with standard pvc fiitings to connect them. laid on pea gravel bed, wrapped in geotexile membrane wrapped over them and covered over with pea gravel.
These would then lead to a silt trap, which would then lead to a combined sw and fw system.

Would this help??
any advice would be greatly appreciated. Sorry for the long post.
Cheers

Posted: **Fri Mar 05, 2010 5:46 pm**

Tomo can you get some pics up would be helpful

Posted: **Fri Mar 05, 2010 7:26 pm**

I will try. Im not the best on computers. Am i on the right lines from what ive said do you think?

Posted: **Fri Mar 05, 2010 8:11 pm**

is the idea to drain the grass so its dry?

yes french drains will help but if the soil is very compacted and hard after years and years of never being turned over then you are going to struggle.

we do a lot of these land drains in fields and rugby pitches

without laughing a good forking might help alleviate standing water and the drains will take the water away.

theatrically if you've wrapped them in a geotextile no silt can get in, but if you are putting it into a combined system it is advisable to use a 450 or 330 inspection chamber to make a catch pit.

http://www.pavingexpert.com/drain03.htm

Posted: **Fri Mar 05, 2010 9:19 pm**

Yeah the idea is to drain the grass.

would perforated flexible plastic pipe do the job? Just due to the price difference between that and rigid pvc. Marley do a 250mm silt trap. Link below dont know if its works. Would that be ok to feed the pipe into, and then into the combined system? Or are there other soloutions?

Thanks for the replies by the way. Much appreciated

http://www.combinedharvesters.co.uk/product....gory=0o

Posted: **Fri Mar 05, 2010 10:04 pm**

yeah you want perforated pipe its about Â£1/m trade for 100mm

yeah that will do, just make sure it has a rubber seal in lid dont want foul smell coming up from drain.

other options would be a water harvesting system to use to water the garden in summer but expensive, if we ever do get a summer again and you have over drained your ground you will have to water the grass etc

Posted: **Sat Mar 06, 2010 8:14 pm**

Cheers for the replies felas. Will go with that then. ta

The Brew Cabin

French drains,collector drains