I have a plan to add a bathroom to our downstairs basement. Right now the room next to this has a toilet amd utility tub, washer/dryer, vent for drain, water heater. I am wanting to add a full bath next to this room for the bedroom. I have searched and seen different "suggestions" whether they are correct or not I am unsure. It would be tub, then toilet, then sink.

Can I run all 3 of these into one drain cut out the concrete over to the existing toilet line or into the main line leading out of the house? Or do i need 2 drain lines? Which is the preffered/correct way?

I plan to add a vent or 2 if needed to either run up to connect to existing vent. There would be a horizontal pipe run with each of these due to dropped ceiling in basement. I can run at the normal slope or run a higher than 1/4" per foot if needed. I did not want to add a pump system if possible and would rather due to it to last with proper drains. My thoughts are run all 3 together to the main drain line. Vent off the toilet up and over then vent the tub or sink up into this line.

Is this plan correct?

I am not sure of the exact location of the main drain line but it is either within the wall behind the existing toilet or just past within a foot due to a floor drain in the garage which has standing water about 10" down from the surface of the concrete. The distance between where the new drain would be to the existing is approximately 8'.

I appreciate the help and incite. Just wanting to make sure it is down properly.



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building permit
!!!

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638



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No permits required where I am.

? are you sure ?

The State of Illinois recently passed legislation (Public Act 103-0510) changing the Capital Development Board Act to require statewide building codes effective 1/1/2025. Until then, units of local government such as cities and counties can adopt codes of their choice. The best and most accurate answers to building code questions must be answered by your city, village, or county code official.

This statute merely CODIFIES all the 'local' codes into one statewide code.

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Yes I checked with county and city prior to even beginning to plan. I figured out how to properly drain with correct vents through another contractor who is a licensed plumber. He agreed with the new plan I came up by switching the bathroom fixtures and sides of room.