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Hello, There is high rise building, 5 stories - and there is a 4" sanitary riser serving restroom groups on each level - isn't the code that you shouldn't connect horizontal branch sanitary piping on the lowest level within 10 pipe diameters of the base of the stack? At least shouldn't connect...

Hello, If you have a 6" overflow drain pipe, is it acceptable to split it into (2) 4" vertical pipes and (2) 4" lambs tongue downspout nozzles right at the exterior wall? (2) 4" pipes will handle the GPM and roof square footage capacity by code. Has anyone done this before? I don't know the...

Hello, I don't belief the IPC lists "suds relief" or keeping a minimum distance of 8 ft from washing machine stacks (From other stacks). Only an obscure old reference from the UPC. I have never seen this called out on any plumbing plans. Only a slight reference to it recently brought it up in...

This question is about waste stacks and and relief vent connections at the base of the stack. The situation is a toilet only waste stack and vent stack that is 5 stories tall. There is a dedicated 2" vent stack and 4" waste stack for these toilets (10 DFU residential toilets). First section 907...