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outback, I am assuming you mean it wont clog up?. Well, I can assure you it most defintely will(from bitter experience).
The original aggy pipe installed before I bought the place was clogged. I tried to flush it by putting a hose down it and got no further than about 2mtrs out of 20. Pulled it up and it was clogged solid with dirt and roots. This had been placed in with no aggregate at all just straight in the ground.
After doing some research I thought a bed of gravel and gravel around the new pipe was the way to go but that also ended up the same way after 2-3 years. Blocked solid with dirt and roots.
After putting in some grates in strategic places and unslotted drains there have been no further problems for quite a few years. Enough water goes through to flush out any dirt that gets in and no roots can get in so no clogging.
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Hi Pedro,
Interesting comments. It is suprising to see people still bury ag pipe directly in the soil and then are suprised it does not work effectively.
Here is why mine does not clog up.
All my drains are laid in 10mm drainage gravel, with minimal topsoil cover (the gravel doubles for use as a series of paths) with the entire drainage system gently sloping to the front of the yard. I also have drainage grates installed to remove the runoff deposited by the down pipes, like most old Qlders the down pipes used to empty directly onto the ground (the stump footings:eek:) I also installed an extra catchment grate where I found one particular problem area where runoff still came in under my house. Where the gravel trenches and drainage system end, I used unslotted pipe to the end of my property and capped it with pest grates.
The combination of both systems keeps my slotted ag pipe free of dirt and from clogging up. I do find the use of "pantyhose" has improved the effectiveness of my drainage system, along with pest grates it keeps any unwanted foreign material from clogging up my system. This has been in place for 4 years now and no problems.:D :D :D
I did get advice from others with more experience than me, before installing, and found in the area where I live, close to creeks, on clay soil this has been effective.
I cannot pass judgement on how effective your application of ag pipe was, the other feedback on this post tells me it may not be suitable for all areas. I am glad to hear you got it sorted.:)
I still maintain that slotted ag pipe with geo sock can be effective.
