Soak away crates

diggerjones

diggerjones

Well-known member
Wheres cheapest for crates think i need about 2m3.
Anyone used the concrete rings with the holes in, are they any cheaper.
Cheers Dylan
 
JD450A

JD450A

Feral as Fk
Anymore info rory. Size price etc.
They crates are daft money. £150 a m3 🤤
Basically for a Attenuation type soakaway the design needs a surface area and a attenuation volume.

Pipe has a internal volume. The formula for the volume of cylinder is: cylinder volume = π * radius² * height . For a pipe use its length instead of height: pipe volume = π * radius² * length , where radius = inner diameter/2 . The volume of a pipe is equal to the volume of a liquid inside (if a pipe is fully filled with it).
1610573594382.png

Then there is the surface area for the soakaway which is just the area of the stone surround. Can use whatever size you need.
 
diggerjones

diggerjones

Well-known member
Thanks
Basically for a Attenuation type soakaway the design needs a surface area and a attenuation volume.

Pipe has a internal volume. The formula for the volume of cylinder is: cylinder volume = π * radius² * height . For a pipe use its length instead of height: pipe volume = π * radius² * length , where radius = inner diameter/2 . The volume of a pipe is equal to the volume of a liquid inside (if a pipe is fully filled with it). View attachment 20997
Then there is the surface area for the soakaway which is just the area of the stone surround. Can use whatever size you need.
Thanks. So if i got 600mm twin wall and cut slots/drilled holes in it. What length of pipe would i need for 2m3.
I'm crap at maths 😁
 
GazCro

GazCro

Well-known member
Thanks
Thanks. So if i got 600mm twin wall and cut slots/drilled holes in it. What length of pipe would i need for 2m3.
I'm crap at maths 😁
Crates probably work out similar or maybe even cheaper than pipe will be. The annoying thing about the crates is the cost of them when you consider that pop creates used to be easily gotten for nowt.
I don't know where you're pricing creates at but civils suppliers will be cheaper than builders merchants.
 
diggerjones

diggerjones

Well-known member
Crates probably work out similar or maybe even cheaper than pipe will be. The annoying thing about the crates is the cost of them when you consider that pop creates used to be easily gotten for nowt.
I don't know where you're pricing creates at but civils suppliers will be cheaper than builders merchants.
Looking at prices on internet. I've got plenty of room so maybe pipes might work if cheaper. Have you got any prices for crates
 
GazCro

GazCro

Well-known member
Looking at prices on internet. I've got plenty of room so maybe pipes might work if cheaper. Have you got any prices for crates
No last job i had anything to do with them the builder got them. It's rare round me to use soakaways for surface water tbh I've only ever done two. I did one a while ago with conc rings as rory drew above but you don't want to go that route dearer again and then you've got the hassle of handling the rings.
 
GazCro

GazCro

Well-known member
Volume of a 6m length 600 twinwall is about 1.7m3 and it'll be about £300 a length (may find cheaper but not a lot?) So i reckon not a lot in it. At least with crates you can decide how wide deep long you wanna dig
 
GazCro

GazCro

Well-known member
Either option you take it'll be way cheaper than the calibrated outlet fitting for an attenuation tank.
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Either option you take it'll be way cheaper than the calibrated outlet fitting for an attenuation tank.
my attenuation storage works a treat on my drains here ......
tank 1 is about 5 ft sq. and 5 ft deep ..... feeds to a.n.other 5ft sq x about 10ft deep, downhill, all fed by 6" & 10" perf.s and exiting through a pair of 4" perf ..... never over topped yet and lets it out at a sensible rate :giggle: ...... there is some run off going into it, but is going to have to be going some to fill 10 cube, (plus pipe runs)
 
GazCro

GazCro

Well-known member
my attenuation storage works a treat on my drains here ......
tank 1 is about 5 ft sq. and 5 ft deep ..... feeds to a.n.other 5ft sq x about 10ft deep, downhill, all fed by 6" & 10" perf.s and exiting through a pair of 4" perf ..... never over topped yet and lets it out at a sensible rate :giggle: ...... there is some run off going into it
Did one that had to go through building regs and so had to for hydro brake to 4in outlet. £900 for hydro brake! 🙈
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Did one that had to go through building regs and so had to for hydro brake to 4in outlet. £900 for hydro brake! 🙈
900 quid FFS :oops::oops: ... not much to 'em is there ?
 
GazCro

GazCro

Well-known member
900 quid FFS :oops::oops: ... not much to 'em is there ?
Nothing to them tbh but if building control say you gotta use one that's what you gotta use. I wanted to drill a hole in a bung and put it in the end of the pipe but that didn't suit 🤣🤣
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Nothing to them tbh but if building control say you gotta use one that's what you gotta use. I wanted to drill a hole in a bung and put it in the end of the pipe but that didn't suit 🤣🤣
with a bit of calc.ing it'd probably have done the same job ... no prob.s :rolleyes:(y)
 
T whiting

T whiting

Well-known member
A hydro brake is only a stainless box with a hole in it and a flap valve so you can bypass it gra they even tell you how big the hole needs to be in it 😲
 
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