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Hi Guys

I trying to calculate the DUF's for 2nd floor remodel. Adding a bathroom group, extra lav and 2 shower stalls. I want to try and combine on of the vertical drain with a 3-inch drain in basement where the kitchen drain joins

what is the DFU for a double sink with waste disposal in 1 side (smaller sink) and dishwasher connected into same drain

AFAIK a sink and dishwasher is 2 DFU, but I though a waste disposal and sink was 3, so would i calculate this as sink with WD (3) + sink with dishwasher (2)


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