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[TheBoy]

Now my only real concern, which was highlighted by Vache, is what if it over flows? Does it just back up along the original drainage lines or would there be an over-flow some place else? It does look quite vast, but then again rain can produce a lot of water in a short space of time.

"Whats the worse that will happen?" as they say on TG

It should have an overflow. If that doesn't work for whatever reason, you are in the realms of the garden getting a bit soggy. You'd need a shit load of rain for it to come about the damp course, assuming thats higher than the top of the tank?

[tunnie]

Now my only real concern, which was highlighted by Vache, is what if it over flows? Does it just back up along the original drainage lines or would there be an over-flow some place else? It does look quite vast, but then again rain can produce a lot of water in a short space of time.

"Whats the worse that will happen?" as they say on TG

It should have an overflow. If that doesn't work for whatever reason, you are in the realms of the garden getting a bit soggy. You'd need a shit load of rain for it to come about the damp course, assuming thats higher than the top of the tank?

I think the over-flow may go into the main council based drainage, not sure on damp course. 

[05omegav6]

Council will only adopt our road if it is first bought upto current legislation standards won't be this decade

[TheBoy]

My road is unadopted, as we found out at the Jubilee. Council cock-up it appears. I'm not surprised.

[tunnie]

My road is unadopted, as we found out at the Jubilee. Council cock-up it appears. I'm not surprised.

I'm surprised by that 

[Rods2]

Likewise, my road is unadopted. It is being dug up in December to replace the cast iron water main that keeps breaking.

Residence will be making sure it is reinstated properly, if not it won't be the first time they have been made to come back and redo the work. 

[Marks DTM Calib]

Attenuation tanks are more and more common on new estates as a method to meet the latest SUDS requirements. This will reduce your water bills a bit as it means you don't have to pay for surface water drainage.

[tunnie]

Attenuation tanks are more and more common on new estates as a method to meet the latest SUDS requirements. This will reduce your water bills a bit as it means you don't have to pay for surface water drainage.

Ahh good to know Mark thanks 

What is the usual setup if one of these tanks fills up? Or are they hugely over capacity?

[Rods2]

We have a balancing pond about 200 years away for the same reason, runoff from what used to be hills, now being houses. The steam that used to run in my front garden is now a culvert, that runs under the road. This was done, before I bought the the house. Before this was done the road was unmade and used to flood but as part of the inducement the residents were offered the free tarmacing of the road, small speed humps, and bollards halfway along to stop it becoming a rat run, all of which were accepted and make it a very pleasant place to live. 

[MR MISTER]

We have a balancing pond about 200 years away for the same reason, runoff from what used to be hills, now being houses. The steam that used to run in my front garden is now a culvert, that runs under the road. This was done, before I bought the the house. Before this was done the road was unmade and used to flood but as part of the inducement the residents were offered the free tarmacing of the road, small speed humps, and bollards halfway along to stop it becoming a rat run, all of which were accepted and make it a very pleasant place to live. 

200 years away is no good, you'll be dead. And if you have a geyser in your front garden, you should run your central heating from it.

[Rods2]

try yards. 

[henryd]

try yards. 

And stream

[Sir Tigger KC]

Rods has been at his sloe gin!!! 

[Marks DTM Calib]

Attenuation tanks are more and more common on new estates as a method to meet the latest SUDS requirements. This will reduce your water bills a bit as it means you don't have to pay for surface water drainage.

Ahh good to know Mark thanks 

What is the usual setup if one of these tanks fills up? Or are they hugely over capacity?

It depends how they have been constructed

Have a read here for more info:

http://www.pavingexpert.com/drain12.htm

[Rods2]

Rods has been at his sloe gin!!! 

I wish, busy working. Took a 10 minute break with my mind still on work when I wrote this  and didn't bother previewing what I had written.