I’m moving a toilet about 10 feet further from the stack, which will make the drain distance, including elbows about 12 feet from toilet to stack. Both the drain and the stack are 3″ pipe, the stack is cast iron and the toilet drain will be PVC. The toilet drain will have a slope of 1/4″ per foot. I also expect to connect a 1 1/2″ vanity drain pipe witha T-Y into the 3″ PVC drain from the toilet about mid way to the stack. Does this configuration seem correct or will I encounter problems?
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