I need to cut into the plastic risers on an inspection chamber and was wondering if/how to seal the pipes (110mm). I'm doing it for a back drop pipe, and it's only for rainwater. Do I just use sealant around the pipe or is there something better?
Sealing pipe entering plastic riser?
- Thread starter Peter500
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300mm drain riser?
Not sure what you are connecting to...
You can get 32 and 40mm boss straps for 110mm soil pipe.
You can get 32mm and 40mm rubber bung to take 32mm or 40mm pipe...
You can also buy service plugs they use after drilling hole for camera..
I think drill 32mm hole for rubber and 32mm pipe.
Look up boss strap and fittings.
Maybe something there you can use
Not sure what you are connecting to...
You can get 32 and 40mm boss straps for 110mm soil pipe.
You can get 32mm and 40mm rubber bung to take 32mm or 40mm pipe...
You can also buy service plugs they use after drilling hole for camera..
I think drill 32mm hole for rubber and 32mm pipe.
Look up boss strap and fittings.
Maybe something there you can use
Presuming it is square/oblong underground riser you are talking about
It's a round Floplast one
I'm assuming you want to connect a back inlet gully or similar that is fed by a downspout into the chamber without digging down to the base.
I don't know if that would contravene any regulations but if not I would think you only need to ensure that it is a rat proof connection. Perhaps something like JB Weld
I don't know if that would contravene any regulations but if not I would think you only need to ensure that it is a rat proof connection. Perhaps something like JB Weld
Not quite what you're saying. It's a new inspection chamber, so no issues with digging down to it. This web page shows exactly what I'm looking to do and appears to be the same riser in the photo.
The Significance of a Backdrop in a Manhole Network: Ensuring Smooth Drainage Flow
In any drainage system, ensuring the smooth and efficient flow of wastewater is essential to prevent blockages, backups, and damage to infrastructure. A key element that helps in maintaining this smooth flow in a manhole network is the backdrop.
www.linkedin.com
I'm doing this so that the fall isn't too steep. So there will be a normal fall on the pipe, a sudden drop to the inlet of the tank and then a pipe going into the riser for rodding.
I think sealant is probably adequate, but I don't know whether building control will have other ideas.
To be honest I have only been involved with domestic waste drainage and never industrial which your link refers to. I've never heard of a back drop and personally would have put a rodding eye in the pipe attached to the gully then connected into the base of the chamber rather than break into the riser. But I can see what you want to achieve the way you envisage doing it. If the new drain is just for surface water and not far from the chamber then there probably no real need for rodding access.
This is the post that lead me to the back drop. This is domestic. It's rainwater and approx 2.5m in length.
The way I read that post most of the answers are saying the same thing I did in my last post. That is, for surface water from your gully there would be no need for any means of rodding it as it is never going to block up and feeding into the base of the chamber with no back drop as it is not needed. The amount of fall is imaterial for surface water.
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