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Greetings everyone.
I wish to convert one of my property's ground level open gullies (connected to main foul drainage) for external soil stack pipe use but I understand that the base of a soil stack has to be a rest bend, not a trap.
So, if I replace the existing trap with a new rest bend (200mm radius as per Building regs), how should the RW downpipe be connected?
Furthermore, I will need wash basin and bathtub waste pipes to be installed from first floor (currently no bathroom there), so if I put an external wall hopper at first floor level, how should be the base of the hopper downpipe be connected to the drainage?
Advice welcomed. Here are photos of the gully in question:
I wish to convert one of my property's ground level open gullies (connected to main foul drainage) for external soil stack pipe use but I understand that the base of a soil stack has to be a rest bend, not a trap.
So, if I replace the existing trap with a new rest bend (200mm radius as per Building regs), how should the RW downpipe be connected?
Furthermore, I will need wash basin and bathtub waste pipes to be installed from first floor (currently no bathroom there), so if I put an external wall hopper at first floor level, how should be the base of the hopper downpipe be connected to the drainage?
Advice welcomed. Here are photos of the gully in question: