Plumbing vent question

[seandunn]

Hey ya'll, i have a question about vent code. i have two bathrooms that share a wall and am moving my laundry room to the same area. i will have a total of five vents i will be dealing with. two shower, two sinks, and one for the washing machine. my question is can i connect all five 1.5" vents with 90's, and tee fittings to run them together into one existing three inch stack? thanks

attached is an image roughly of the layout. top two room are the bathrooms and bottom is laundry. smaller circles are 1.5" vent the larger is the 3in.

 

[Reach4]

Hey ya'll, i have a question about vent code. i have two bathrooms that share a wall and am moving my laundry room to the same area. i will have a total of five vents i will be dealing with. two shower, two sinks, and one for the washing machine. my question is can i connect all five 1.5" vents with 90's, and tee fittings to run them together into one existing three inch stack?

Yes. The vents must stay vertical for 6 inches above the flood level of the fixture, and maybe 42 inches whichever is higher. Vertical for this purpose means no more than 45 degrees off of true vertical. I am not a plumber.

 

[Sponsor]

 

[Terry]

If you can go 1/3 the vertical on the horizontal and then more than that you bump it up one size.
But yes, pretty much yes.