Any Experts in French Drainage or Surveying?

[Terryg4]

Hello
I'm a UK Contractors surveyor living in France, not quite what you are after , but I have an idea!
Anyway like anything French, it's not that easy ....
I found this
T = TN = niveau du terrain
R = radier (fond de la canalisation ou du regard)
fe = fil d'eau (niveau d'eau)

So FE could be the invert level i.e the level at the bottom inside the pipe.

The local inspectors are normally really friendly but you need to work out what you need as a depth at the boundary and they will tell you whether it works for the connection.
Basically take the take off point and work out the invert level at that point, then take a fall of 1:40 (if 100mm pipe) 1:60 (if 150mm pipe) and see where you get to. Remember there may be a difference between the level of your house and the level at the boundary.

The 1.8m may be arbitary not a maximum.

Do you know how deep the sewer is in the road?

Just had another thought. You can divert your drainage connection under the GF in the basement (under slung) and then come out higher , then with any connections that in the basement , use a small isolated pump to get up to this level.


Good luck

Terry

Edited by Terryg4 on Tuesday 30th July 13:36

[magooagain]

In most cases you will have your own manhole provided for you out on the road,that then will go to the town main sewer pipe.
As Terry mentioned it may well be best to split your system and exit the house as high as possible or needed..
The manhole in the road should be down about 600mm for you to join to.

You may need a 100mm to around 150mm reducer to join onto the provided manhole.

[rdjohn]

Something like this is another potential solution if your outlet is below invert

https://www.sumpsandpumpsdirect.co.uk/acatalog/Dom...

[Zulu 10]

rdjohn said:

Something like this is another potential solution if your outlet is below invert

https://www.sumpsandpumpsdirect.co.uk/acatalog/Dom...

Thanks for the pointer. I’d probably want to go for a dual pump version for resilience, and possibly a battery/inverter back up power supply, it will get quite expensive.

Plus I’ll have to deploy yet another Raspberry Pi to keep an eye on it all – there’s already a Pi that monitors the boiler and e-mails me to let me know if anything goes awry, and another Pi to keep an eye on temperatures around the house and present a web page with a few graphs.