talkingdog
New Member
Hi,
First post here, from rainy Japan, where according to the code you can take your brand new $6000 Toto Neorest toilet and hook it up to an unvented plumbing system. I know, I know, our codes here are pretty backward, but I promise I'm not trolling here.
Venting is only required from the fourth story upward.
Now, here's the scenario. I'm specing out a 2 story house with three bathrooms, etc., and the plumber doesn't want to put in vents. In fact, I think he doesn't know how. He says the only advantage of venting would be that things flush faster.
Now, as a reader of this forum, I know that venting is considered essential from a health and hygiene point of view. And I could probably find a contractor to install a vent stack in this house.
But what about going with all-AAVs? My understanding is that you need one AAV for each drain, with an access hatch, and there is supposed to be one vent somewhere in the house, according to code (in the US, that is).
What is the practical reason for the requirement of at least one vent stack? Is there the possibility of some dire result if the house were to be all-AAV with no stack at all?
First post here, from rainy Japan, where according to the code you can take your brand new $6000 Toto Neorest toilet and hook it up to an unvented plumbing system. I know, I know, our codes here are pretty backward, but I promise I'm not trolling here.
Venting is only required from the fourth story upward.
Now, here's the scenario. I'm specing out a 2 story house with three bathrooms, etc., and the plumber doesn't want to put in vents. In fact, I think he doesn't know how. He says the only advantage of venting would be that things flush faster.
Now, as a reader of this forum, I know that venting is considered essential from a health and hygiene point of view. And I could probably find a contractor to install a vent stack in this house.
But what about going with all-AAVs? My understanding is that you need one AAV for each drain, with an access hatch, and there is supposed to be one vent somewhere in the house, according to code (in the US, that is).
What is the practical reason for the requirement of at least one vent stack? Is there the possibility of some dire result if the house were to be all-AAV with no stack at all?
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