Our house was built in the early 70s and has a twin pipe system for rain
water & sewerage.
We've a problem with the system backing up periodically that can be cleared
by rodding with a rubber disk on a drain rod down a vent pipe that's
situated between an inspection chamber in the drive and the main sewer in
After rodding there is always some "water" visible down at the bottom of the
vent pipe. Would I be right in thinking that there's some sort of bend/trap
in the system at that point?
If there normally *isn't*, should I be able to rod through from the
inspection chamber right past this vent pipe position towards the road?
It's not a major problem but clearly something isn't quite right and if
there's anything I can do with drain rods rather than digging 6' down
through the driveway I'd be interested to hear.
- posted 12 years ago