Given that the pipe is sound [all soil is going the same route at the moment, albeit 18" to the left] the question is - are the proerties of the underground bit that a CI vent fits into always suitable to route soil down, or are [1950's] there some which are as a vent only? It isn't the pipe I...
There is only one gully that runs through the bottom of the first manhole, which happens to be a 90deg bend to run down the side of the property.
I don't suspect that the drains are not sound, it was more a question about the design or types of fitting that the vent pipe was inserted into...
I have an old ground floor loo where the soil pipe goes vertically through the bathroom concrete floor and into the drains. Just to one side of this (outside) is the vent pipe. Can I replace the vent pipe with a plastic one and then tee into it from the new loo? Or are some old fittings that the...