Furniss
Well-known member
Exactly ... needs the air so not plastic just terram.
Furniss
Well-known member
The pipe we use has wider slots than the still saw makes and depends how much you use I suppose but time is money.
doobin
Well-known member
All very well if you're next to the quarry! Down here on the coast I've only even known shingle to be used. Much cheaper.
D
DaveDCB
Well-known member
Ah yeah I forget that not everyone has limestone surrounding them!
a comprehensive guide for foul drainage/soakaways for anyone who’s unsure..
Soakaway Drainage Fields | Septic Tank Drainage Field
Did you know that Soakaway regulations have changed? Learn everything you need to know to keep yourself compliant here.
Left hooker
Well-known member
Yeah granite down hereAh yeah I forget that not everyone has limestone surrounding them!
a comprehensive guide for foul drainage/soakaways for anyone who’s unsure..
Soakaway Drainage Fields | Septic Tank Drainage Field
Did you know that Soakaway regulations have changed? Learn everything you need to know to keep yourself compliant here.www.wte-ltd.co.uk
G
goldeneagle
Member
The proper stuff i bought for my house soakaway was a heavier wall thickness than standard soil pipe, builder did say to use standard soil pipe and use stihl saw to cut tractor tyre tread esque chevron slots in it, in the end needed to order pipe and payed the extra for proper stuff as time was at a premium.
Out of interest does anyone know why you can't use twin wall drainage pipe with smooth internal diameter for a foul soakaway.
Furniss
Well-known member
My answer would be why would you ?
G
goldeneagle
Member
The twin wall for me is more forgiving if the backfilling of a soakaway was done in stoney ground and distribution system was not properly protected during install/backfill. The soakaway distribution is used to discharge what is treated liquor back into the ground formation via the soak way at a controlled rate so apart from pipe material differences they serve the same function.
Access to my soakaways to backfill/install was a pain.Land dug through was sandy with high stone content with immediate backfill material to distribution system having to be screened, if someone else had done it would they have screened it i don't know. Having had to repair land drains that were backfilled with minimum care in similar strata I am acutely aware of hazards of stones and settlement on drainage systems have and how single skin pipes are less resilient in certain applications.
GazCro
Well-known member
Backfill material should be clean stone under around and over the soakaway pipes though
Left hooker
Well-known member
Just did a quick Google slotted Vs plain 110mm 6m pipe slotted is double price
So say heron bone is 30 linear m plain pipe is 150 quid where slotted is 365
If it took a labourer on 15 an hour to do them all in an hour that's a 150 saving on the cost of a job
craig
Well-known member
I once done a few hundred meters of 9" perforated twin wall for the LA, only normal depth, from a flooding hot spot on one road across some fields to a ditch on an other road.
No idea why but I would guess it wouldn't because they where cheap!
G
goldeneagle
Member
Clean stone under pipe, pea gravel surrounding it, screened material in between the herring bone and on top of pea gravel, not worth hassle of not doing right.
GazCro
Well-known member
I was making the point that if you are backfilling soakaway properly with clean aggregate it shouldn't matter about the ground conditions you're putting it in be it stoney ground or not.
GazCro
Well-known member
I've slotted hundreds of metres over the years and one thing i can say is I'd want more than £15 an hour for doing it. Your right though it is a fair amount dearer for what it is but you're passing the cost on to the customer so....
Left hooker
Well-known member
Price job you would price in proper pipe then on job make your own
Furniss
Well-known member
Over here we are not allowed to slot our own pipe, I suppose the reasoning is that its not as uniform or wide in the slots and if you or the lad you have do it cuts too far through it then it could fail under load ?
£150 sounds a decent saving in isolation but in the scheme of overall cost of the job you might as well put proper pipe in .
Imho
£150 sounds a decent saving in isolation but in the scheme of overall cost of the job you might as well put proper pipe in .
Imho
B
Brendan
Well-known member
So for standard land drains are you still just covering the top? As we have always wrapped the whole shingle section and any jobs where a spec has been provided is the same
Hg2702
Well-known member
I’ve been asked to look at some drains at the cricket club , the river is the same level as the playing field so the existing land drains just fill up the minute it rains. Any ideas on what we could do ? Doesn’t help it’s on the bottom of the valley 
there’s f**k all going for the job really
there’s f**k all going for the job really
JD450A
Feral as Fk 🐾
Now the limestone your actually into a weird quandary and the difference between a soakaway and a leachate field (foul soakaway)
Soakaway is all about water f****ng off..... which is a case of water enters a bed of clean stone, and percolates into the ground.
Leachate Field (foul) is about bacteria eating the remaining shite..... Arguably limestone has a negative effect on this bacteria due to it's PH properties. pumice or similar is the top one, porous nature gives the stone a larger surface area which means more bacteria living in the field and thus a greater effect..... but we are now going into extremes
S
Smiffy
Well-known member
I’ve been asked to look at some drains at the cricket club , the river is the same level as the playing field so the existing land drains just fill up the minute it rains. Any ideas on what we could do ? Doesn’t help it’s on the bottom of the valley
Could an attenuation tank with a one way valve on the end be fitted
Not much use over winter but should help during the playing season
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