On 23/03/2018 18:14, C. J. wrote:
replying to js.b1, C. J.Â* wrote:
Hi, IÂ* have a solid pipe to a beer crate soakaway in clay soil which I
use for
my grey water.Â* It has always been a bit of a bog.Â* After 4 years it has
clogged up through the pipe and I'm thinking that using perforated pipe
from
beginning to end, without a soakaway crate might work better as, if I
Bury it
shallow, it will dispense the grey water lengthy and gradually into a less
clayed soil. the earth gets more clayed the further down you go.Â* I'm just
wondering if anyone found out whether this 'one side' perforated pipe
exists
because most I can see has all round perforations :-/!!??

Why are you replying to an 8 year old post ?. FFS READ the
original message including date.

If you want chapter and verse on drainage then go and look
at Cormaic's drainage forum (PavingExpert.com).