Would you help design this basement bath DWV

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Graham Love

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Centennial, CO
I am working on adding a basement bath with washing machine.
There is currently a 2" line serving the upstairs kitchen sink and DW that is vented to the roof with a 1.5" line.

If i were to vent the Toilet and Lav @ 4 DFUs combined (max allowed for a 2" wet vent). How do i vent the Shower and Washing machine?

All help is greatly appreciated! I love plumbing and am currently a card carrying apprentice and I have passed the residential ICC.


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