Building near pressurised sewer

Bit of an update, spoke to neighbour again, he's had his solicitor go over all the paperwork and searches again and there is definitely no easement in place on his property and they've said even if severn trent have failed to properly raise whatever easement they think is in place they won't be able to enforce it.

His building control officer has said if there's no legal easement on the title he'll pass his build, he'll probably just need a legally drafted letter from his solicitor stating so.

To show willing the neighbour is getting his mate with the digger round on Tuesday to dig 1m of ground on his boundary, he says from experience as our ground is clay once your past the top soil you can see if it has ever been dug up as it stays a different colour, he showed me this with where some of the other services have been dug in his garden and it makes sense.

He's say if he can't find any trace on his property he's going to get on building to the full 6m as building control are willing to support it.

Chris

bernardgreen said:

They can have chambers when an air admittance valve is necessary. Normally fitted at the high points in the pipe run from pump site to sewage works.
They are normally closed when the liquid is being pumped and under pressure.

They open to allow air into pipe when pumping stops. This allows the pipe between valve and sewage works to empty under gravity.

The last major sewer leak in the village was the failure of an air admittance valve. It was still open when pumping started.

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Usually the other way round, air valves allow the pipe to be purged when required. Powerful as the pumps are, they air up very easily if they are allowed to to pump the level down too low and draw air in. Usual practice then is to try and lift the Non Return Valves to backflush the pumps (and hopefully prime them!) Secondly, the flow will only be pumped as far as is necessary. Once Gravity can take over the rising main will discharge into a conventional manhole and the flow will continue by gravity.

The issue in December was Rag jamming the valve open. Due to the weather there were exceptionally high flows, and turning off the pumps to sort the issue was a last resort.

Just to update this as I saw the neighbour the other day, severn trent asked him to submit a full drains plan application and after paying his fee have said building the original plan is fine and being within 2.5m of the pressurised sewer will cause no issue, its almost as if they just wanted there cut if the money to sign it off.

Ive still personally heard nothing from severn trent and my building notice has been in 3 weeks now so I doubt I will, the next problem on the horizon is going to be sourcing materials, I've got the bricks and blocks reserved but getting 60 bags of cement may prove tricky in the current climate

https://www.bbc.co.uk/news/business-57299350

Travis Perkins says the price of bagged cement will rise by 15%, chipboard by 10% and paint by 5% from Tuesday.

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I know, I can cope with the price rise but the fact I can't order the amount I need is the current issue