A friend has a house built in 1906 which now has a leaky drain. The building has a two pipe system and the problem is with the rainwater downpipe and kitchen waste. There is a trapped open gully which takes the kitchen sink and washing machine on separate discharge pipes, the gully also has a 4" side connection with the cast iron rwp connected to it. I understand why the trap is there however if we were to do away with the open gully could we lose the trap as well and rely on the sink/washing machine traps. Would there be any problem with everything connected together into a new connection straight into the clay pipe.
Thanks Martin
Thanks Martin