Soakaway and building regs - any experts?
Soakaway and building regs - any experts?
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Discussion

andy ted

Original Poster:

1,317 posts

281 months

Friday 21st February
quotequote all
Hi all

Our house was built in 1980ish and now has a completely blocked soakaway in the back garden which we are looking to replace and ideally we wanted to relocate it further away from a tree which is under TPO. However, the main issue is that looking at the building regs (5m from any building and 2.5m from the boundary) there isn't any suitable location (even the site of the existing one) due to the size and shape of our garden and proximity to neighbours and a road! Has anyone solved this before or should my first step be bite the bullet and contact the local building control department?

I wonder if there might be any condition where an existing one can be repaired even if the location is not now compliant. Just trying to get ahead of the inevitable red tape and issues!

Thanks in advance

Andy

KAgantua

4,724 posts

147 months

Friday 21st February
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I believe you can replace a failed soakaway with a new one (Presume you are using crates right?) in an inoptimal location if there is no other option

anonymous-user

70 months

Friday 21st February
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From previous experience with BC and soakaways/rainwater on various projects I'd be keeping cards close to chest and avoid sticking your head above parapet in anyway possible.

As you've already discovered your responsible to deal with your run off but the rules mean you have no way of doing so in a compliant way. Those two points aren't the BC officers problem, they're yours and yours to sort. We went round in circles for a long time and I've seen some very suspect designs 'passed' by BC because reality has dawned that house plots aren't always big enough to accommodate the rules they want to enforce.

Tread carefully is my advice

andy ted

Original Poster:

1,317 posts

281 months

Friday 21st February
quotequote all
Thanks yeah I am hoping we can argue its replacing an existing one rather than something new - and want to avoid as many hoops as possible!

Chrisgr31

14,058 posts

271 months

Friday 21st February
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If its in your garden how are they going to know you have replaced it?

jules_s

4,802 posts

249 months

Friday 21st February
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The base 1m above the water table tends to be an issue (and the duration to determine the seasonal levels)

And determining permeability rates etc

If you DIY it (as above)I'd want to know if it would work/not fail again.

My BC wont budge on the 5m/2.5m rules at all




CoolHands

20,929 posts

211 months

Friday 21st February
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Surely just replace it properly and while you’re there dig it much bigger and add more crates. You’d be mental to alert anyone voluntarily confused

Snow and Rocks

2,878 posts

43 months

Friday 21st February
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Assuming that the old one worked fine for 40 odd years I'd just crack on and sort it out without involving anyone.

RGG

692 posts

33 months

Friday 21st February
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Snow and Rocks said:
Assuming that the old one worked fine for 40 odd years I'd just crack on and sort it out without involving anyone.
I would guess you are going to "maintain" it rather than replace it? smile

That's what I would be doing.

Sheepshanks

37,397 posts

135 months

Friday 21st February
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sfella said:
From previous experience with BC and soakaways/rainwater on various projects I'd be keeping cards close to chest and avoid sticking your head above parapet in anyway possible.

As you've already discovered your responsible to deal with your run off but the rules mean you have no way of doing so in a compliant way. Those two points aren't the BC officers problem, they're yours and yours to sort. We went round in circles for a long time and I've seen some very suspect designs 'passed' by BC because reality has dawned that house plots aren't always big enough to accommodate the rules they want to enforce.

Tread carefully is my advice
Our extension / refurb plans had the whole house's rainwater going to a soakaway, as the house is built gable end to the road. The BC took one look at the ground conditions where the foundations had been dug and told the builder to forget using a soakaway and to put the rainwater into the foul water drain. I wouldn't mind, but there's also a parallel surface drain across the garden but we have no manhole for it.

Of course once the builder had been told that there was no way he was going to muck around connecting to the surface drain.

jules_s

4,802 posts

249 months

Friday 21st February
quotequote all
Sheepshanks said:
Of course once the builder had been told that there was no way he was going to muck around connecting to the surface drain.
We've recently completed a scheme where we legally (and I mean 100% legally) connected into the adjacent foul main.

Last month the sewer backed up and flooded our building with effluent. Investigations are underway but it's known muppets upstream have connected surface to foul...

Our bill will run into 100k+



GasEngineer

1,487 posts

78 months

Saturday 22nd February
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Sheepshanks said:
Our extension / refurb plans had the whole house's rainwater going to a soakaway, as the house is built gable end to the road. The BC took one look at the ground conditions where the foundations had been dug and told the builder to forget using a soakaway and to put the rainwater into the foul water drain. I wouldn't mind, but there's also a parallel surface drain across the garden but we have no manhole for it.

Of course once the builder had been told that there was no way he was going to muck around connecting to the surface drain.
When I tried that I was told that the decision was the Water Company's to make rather than BC. (And they didn't allow it).

andy ted

Original Poster:

1,317 posts

281 months

Saturday 22nd February
quotequote all
Thanks for all the replies so far - sorry I should have said this is part of some bigger works going on that need PP and BC so not sure I will be able to get away with getting it done and not getting it signed off? I can get 5 metres away from all buildings easily but then its too close to the boundary and a road due to the site layout.

From what I can make out from the plans the front downpipe runs into a shared sewer that then runs into what I assume is a surface sewer on the road. Though its unclear like most sewer maps... If there is a surface sewer there then it will pass close to us in multiple locations - I wonder if an alternative is to connect either to the shared sewer or to the main surface sewer instead though I assume both of these options are not going to be as cheap as a soakaway!

I don't suppose there is any way to get all the rainwater from the roof down one drain pipe? I am assuming not as it would seem far too straight forwards and I can't imagine how you would deal with the corners and the gable end run...

wolfracesonic

8,258 posts

143 months

Saturday 22nd February
quotequote all
Slightly O/T but how do all the soakaways installed in peoples driveways as part of SUDS compliance comply with the 5m/2.5m rule? I suspect the majority of properties would struggle to maintain that degree of separation.

andy ted

Original Poster:

1,317 posts

281 months

Saturday 22nd February
quotequote all
wolfracesonic said:
Slightly O/T but how do all the soakaways installed in peoples driveways as part of SUDS compliance comply with the 5m/2.5m rule? I suspect the majority of properties would struggle to maintain that degree of separation.
I wonder if this is because they are generally replacing a garden - so if you go for a permeable driveway its just like for like?

2fa

37 posts

7 months

Saturday 22nd February
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I have an interesting situation regarding soakaway sewer connections.

A neighbouring plot to my house has been sold to a developer.

The passed pp plans show a limited flow surface water soakaway overflow pipe connection running from the plot into a surface water 225 mm diameter public surface water sewer in the road.

The connection pipe runs over a segment of my land.

I pointed this out when the pp application was being considered but was ignored.

I've pointed it out to the developer and have been told that the water Company can force me to allow access to place this pipe under my land.

There was mention of a small amount of money in compensation.

Can I be forced to have a soakaway pipe run under my land?

I know that a main foul water sewer connection can be forced under the Water Act.

But can a soakaway overflow pipe connection be forced?


paulwirral

3,612 posts

151 months

Saturday 22nd February
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Chrisgr31 said:
If its in your garden how are they going to know you have replaced it?
It’s the bi monthly bc house checks carried out by the council that everyone worries about !

Chrisgr31

14,058 posts

271 months

Saturday 22nd February
quotequote all
andy ted said:
Thanks for all the replies so far - sorry I should have said this is part of some bigger works going on that need PP and BC so not sure I will be able to get away with getting it done and not getting it signed off? I can get 5 metres away from all buildings easily but then its too close to the boundary and a road due to the site layout.

From what I can make out from the plans the front downpipe runs into a shared sewer that then runs into what I assume is a surface sewer on the road. Though its unclear like most sewer maps... If there is a surface sewer there then it will pass close to us in multiple locations - I wonder if an alternative is to connect either to the shared sewer or to the main surface sewer instead though I assume both of these options are not going to be as cheap as a soakaway!

I don't suppose there is any way to get all the rainwater from the roof down one drain pipe? I am assuming not as it would seem far too straight forwards and I can't imagine how you would deal with the corners and the gable end run...
Can you just sort out the existing soakaway before starting the bigger works? As far as building control is concerned you'd be attaching to the existing soakaway.

KAgantua

4,724 posts

147 months

Sunday 23rd February
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paulwirral said:
Chrisgr31 said:
If its in your garden how are they going to know you have replaced it?
It’s the bi monthly bc house checks carried out by the council that everyone worries about !
?

Chumley.mouse

720 posts

53 months

Sunday 23rd February
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KAgantua said:
?
Humour.