Have you checked the main website?
The answers to many questions are there!


Pavingexpert
The Brew Cabin
Paving, Drainage and
Hard-landscaping in
Britain and Ireland

Search Members Help

» Welcome Guest           [ Log In :: Register ]

ruler

 

[ Track this topic :: Email this topic :: Print this topic ]

reply to topic start new topic
Topic: Depth of perforated pipe for land drainage, Land drainage< Next Oldest | Next Newest >
Coisativo
Offline

Apprentice




Group: Members
Posts: 3
Joined: April 2018
Posted: 11 April 2018,13:25 QUOTE

Hi,

I have a very heavy clay soil in my back garden and am planning to install a land drainage system with perforated pipes similar to what was done in the section of Land Drainage Installation. The garden is 25meters long and I am going to be doing most to the work myself to lay a 100mm perforated pipe with membrane + gravel.

I would like to ask if I need to dig 90cm trench or if I could dig 50 or 60cm instead as this would save me a lot of time and effort.

Many thanks.
Back to top
Profile Personal Message 
seanandruby
Offline

sean




Group: Members
Posts: 4610
Joined: June 2006
Posted: 12 April 2018,06:24 QUOTE

Take some time to read the main index
start here


--------------
sean
Back to top
Profile Personal Message 
Coisativo
Offline

Apprentice




Group: Members
Posts: 3
Joined: April 2018
Posted: 12 April 2018,21:46 QUOTE

Quote (seanandruby @ 12 April 2018,06:24)
Take some time to read the main index
start here

Hi Sean,

Thanks for the reply, but it was rather vague. I have read quite a bit of the website. Most of it really. Although very informative, I still failed to find the instructions/explanation why the trench for land drainage has to be 900cm deep for laying a perforated drainage pipe of 100mm diameter.

Would 600mm deep x 250mm wide trench work? 10cm bedding to lay the 100mm fully perforated and corrugated pipe + gravel or pea shingles all around the 100 pipe up to 100mm from ground level so I can fold over the geotextile membrane and finish with topsoil for the turf. All with a 1/100 gradient slope in the ground to allow water flow.

A simple answer/instructions would be most welcome.

Many thanks.
Back to top
Profile Personal Message 
digerjones
Offline

Ganger




Group: Members
Posts: 831
Joined: Jan. 2008
Posted: 12 April 2018,22:13 QUOTE

I would think that would be fine.  Are you putting in any lateral. The deeper you go the bigger area will drain

--------------
dylan
Back to top
Profile Personal Message 
Coisativo
Offline

Apprentice




Group: Members
Posts: 3
Joined: April 2018
Posted: 13 April 2018,00:02 QUOTE

Quote (digerjones @ 12 April 2018,22:13)
I would think that would be fine.  Are you putting in any lateral. The deeper you go the bigger area will drain

Thanks for the speedy reply!
The garden is long but just about 5m wide so the plan is to lay the land drainage in the middle of the garden to start with. If water still accumulates in some areas I can then add lateral branches later hopefully. I am also worried do overdo it and the grass above the drain dry out and die. Clay is very heavy here and more than 3 meters deeper. I know because i tried to reach the next layer and gave up after 3 meters of tough digging with a digging screw. Never again!
Back to top
Profile Personal Message 
4 replies since 11 April 2018,13:25 < Next Oldest | Next Newest >

[ Track this topic :: Email this topic :: Print this topic ]

 
reply to topic start new topic
Quick Reply: Depth of perforated pipe for land drainage

Do you wish to enable your signature for this post?
Do you wish to enable emoticons for this post?
Track this topic
View All Emoticons
View iB Code


ruler

ruler