Hi,
Been planning out an en-suite, my design has evolved based on investigations around my house and have come up with the following.
I will have an 8.5m horizontal branch (18mm fall) which runs on top of the joists in the eaves of my house, this will exit the building on the gable and will have a vertical drop a few metres upstream of my current inspection chamber. I'll make a new connection to that chamber. I'll stick an AAV at the toilet end of the branch along with rodding access.
Do I still need an external vent? my system has an internal vent pipe running through the house and out the roof, the other end ultimatly comes back to the existing inspection hatch, so not sure if a 2nd vent is needed?
Shower waste, i could either have an 8.5 metre shower waste branch connecting into this new soil outside, (don't think i could boss into the side or top near the toilet) but it would mean the shower will be 20+cm off the ground.
Or, i may be able to run the shower and sink waste down into the kitchen and connect into the trap underneath the kitchen sink. Is this allowed?
Cheers.
Been planning out an en-suite, my design has evolved based on investigations around my house and have come up with the following.
I will have an 8.5m horizontal branch (18mm fall) which runs on top of the joists in the eaves of my house, this will exit the building on the gable and will have a vertical drop a few metres upstream of my current inspection chamber. I'll make a new connection to that chamber. I'll stick an AAV at the toilet end of the branch along with rodding access.
Do I still need an external vent? my system has an internal vent pipe running through the house and out the roof, the other end ultimatly comes back to the existing inspection hatch, so not sure if a 2nd vent is needed?
Shower waste, i could either have an 8.5 metre shower waste branch connecting into this new soil outside, (don't think i could boss into the side or top near the toilet) but it would mean the shower will be 20+cm off the ground.
Or, i may be able to run the shower and sink waste down into the kitchen and connect into the trap underneath the kitchen sink. Is this allowed?
Cheers.