Waste Stack Vent Questions

[John_187]

Hello,

There is a 5 story residential. I assume there is no issue with using a waste stack vent for fixtures that line up vertically floor to floor for a height of 5 stories (or about 60 ft max)? I have seen a similar design before. I know waste stack vent is not allowed for water closets and urinals, but I assume good practice suggests it shouldn't be used for kitchen sinks and washing machines also due to solids and soap suds. So waste stack vent would be limited to lav sinks, showers/bathtubs, floor drains.

Thanks for any feedback

 

[PEDARRIN2]

Sinks by themselves would not be an issue, but would likely not do it if there is a garbage disposer. Definite no for washing machines.

 

[John_187]

Thanks for the response. The main question I had though is if a typical waste stack vent is acceptable at 5 stories (or about 60 ft). Would you think any kind of PAPA (positive pressure attenuator) would be required? I have seen PAPAs before, but on just standard vented systems. I don't know the rules behind them,

Thanks