Hi,
I am working on remodeling our kitchen but would like to add a prep sink with a g-disposer about 10 ft away from the main sink with a g-disposer. We have a full basement so all the drain pipes are exposed so easy to work on but my question is my main sink drains into a 1 1/2" cast iron pipe that goes under the foundation of the house and meets up with the main 4" drain under my back yard. Is it ok to connect two sinks on a 1 1/2" drain pipe? If not, is there something else I can do to conform with code to make this possible? We are still in the design stage of the kitchen and this would be a game-changer in the design, so I need to know if this can be done by washington state code
Steve
I am working on remodeling our kitchen but would like to add a prep sink with a g-disposer about 10 ft away from the main sink with a g-disposer. We have a full basement so all the drain pipes are exposed so easy to work on but my question is my main sink drains into a 1 1/2" cast iron pipe that goes under the foundation of the house and meets up with the main 4" drain under my back yard. Is it ok to connect two sinks on a 1 1/2" drain pipe? If not, is there something else I can do to conform with code to make this possible? We are still in the design stage of the kitchen and this would be a game-changer in the design, so I need to know if this can be done by washington state code
Thank you ahead of timeUPC Uniform Plumbing Code
Steve
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