I think there must be at least one real vent. AAVs cannot release pressures.
AAVs can fail. Real vents are very unlikely to fail.
Kitchen Sink Plumbing Config...Good, Bad, and/or Ugly?
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AAVs can fail. Real vents are very unlikely to fail.
Correct, no question. Will do.
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Jeff H Young
In the Trades
I may over react with my opinion too quick . we want it all to turn out well. Lots of visits good.
There is a vent for the kitchen sink plumbing, but the penetration is not through the roof. It's out a side wall. I'm thinking this has something to do with that one piece maybe being for an AAV, but I'm strictly guessing. It might not be for an AAV. Will get answers, tomorrow!
I think at this point, with my limited knowledge, I can't give y'all any additional information that would help make sense of what's under that sink.
Thanks ever so much for pointing me in the right direction and providing some much needed education.
Will update when I know more.
Kind Regards,
TXCajun
I'm not aware of a plumbing code in Texas that allows a p-trap under the floor for a kitchen sink.
In the United States, what I expect to see is a p-trap in the cabinet, vented either up through the roof, or by an AAV at least 4" above the trap arm of the p-trap.
In the United States, what I expect to see is a p-trap in the cabinet, vented either up through the roof, or by an AAV at least 4" above the trap arm of the p-trap.
I'm not aware of a plumbing code in Texas that allows a p-trap under the floor for a kitchen sink.
In the United States, what I expect to see is a p-trap in the cabinet, vented either up through the roof, or by an AAV at least 4" above the trap arm of the p-trap.
Oh, WOW! Thanks very much for the example photos. That is incredibly helpful for me! That is more like what I'm used to seeing. One thing about my build is that this time I'm not installing a disposal. And, yes sir, I can see that if that one pipe in mine is for an AAV, it's not tall enough.
My list of topics for the plumber...
1. p-trap
2. AAV and venting
3. air gap vs high loop air break for dishwasher
4. clean-out
5. code compliance
No doubt there is a load of technical information that could be covered, but do you think this hits the must-haves for getting answers?
That list is good. I heard that Texas was thinking of doing away with plumbing permits. Is that the case where you are?
Seems kind of Third World to me and the other plumbers though. Plumbing the correct way is why we can trust the water that comes out of our faucets and why we don't have to contend with living with sewer gases in our homes. I believe we can afford to do things right in this country.
When I have traveled to places like Central American and parts of India, I saw some pretty bad stuff plumbing wise.
Some of the wiring in India.
Seems kind of Third World to me and the other plumbers though. Plumbing the correct way is why we can trust the water that comes out of our faucets and why we don't have to contend with living with sewer gases in our homes. I believe we can afford to do things right in this country.
When I have traveled to places like Central American and parts of India, I saw some pretty bad stuff plumbing wise.
Some of the wiring in India.
Add vent through roof. I don't know if vent through the side of the house is sufficient or not. That is not a question for your plumber, actually, but for your local plumbing authority.
Do you see other houses with no roof penetration?
That list is good. I heard that Texas was thinking of doing away with plumbing permits. Is that the case where you are?
Seems kind of Third World to me and the other plumbers though. Plumbing the correct way is why we can trust the water that comes out of our faucets and why we don't have to contend with living with sewer gases in our homes. I believe we can afford to do things right in this country.
When I have traveled to places like Central American and parts of India, I saw some pretty bad stuff plumbing wise.
Some of the wiring in India.
I have not heard that about Texas, but if true, good grief!!!!! I can tell you that the permitting requirements aren't as strict or as universal as in some states, but we do have them. Also, to my knowledge, the licensing requirements aren't as strict as in some other states. My cabinet guy spent a lot of time in California and he told me that everybody and their dog has to be licensed. I'm not a regulate-everyone-and-everything-to-death kind of person, but lessening what is in place seems like a terrible idea.
"I'm guessing it is because my architect did not want a vent stack penetrating the roof."
For an AAV to work, there has to be at least one vent through the roof. In most places they want the area of the venting to equal the area of the drain.
A three bath home with a 3" drain would get a 3" vent through the roof, or the composite of two 2" vents and one 1.5" vent, equaling the single 3" vent.
For an AAV to work, there has to be at least one vent through the roof. In most places they want the area of the venting to equal the area of the drain.
A three bath home with a 3" drain would get a 3" vent through the roof, or the composite of two 2" vents and one 1.5" vent, equaling the single 3" vent.
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Yes, we see no roof penetrations with other houses. It was approved. My inspector did pass it, as well.
Interesting. I do recall lots of meetings and planning that went with venting properly. Everything was approved and passed!
Interesting, they insist on a vent through the roof here. And Oatey also says that in their FAQ sheet.
That really is very interesting! That specifically says the roofline and seems to allow no exceptions. I cannot recall the specifics of why my project's plans were approved, but they were. I do recall lots of meetings and planning, but not the specifics. My architect uses this same design in many of his projects, all approved. I know mine is vented very, very high up the wall, is under no overhang, well above trees, etc. Maybe that has something to do with it being acceptable.Interesting, they insist on a vent through the roof here. And Oatey also says that in their FAQ sheet.
My architect .............
I can't tell you how many problems we've all had with architects. They can't be bothered with getting a plumbing license, or taking a test to be a plumber, but they like to draw things. Yeah, it's really just that easy. I have saved them hundreds of thousands of dollars on projects catching their mistakes for them. Wow! Just wow is all I can say here.
I can't tell you how many problems we've all had with architects. They can't be bothered with getting a plumbing license, or taking a test to be a plumber, but they like to draw things. Yeah, it's really just that easy. I have saved them hundreds of thousands of dollars on projects catching their mistakes for them. Wow! Just wow is all I can say here.
From a plumbing function point of view, a vent that opens to the side of the house would work. But then you would worry about smells hitting nearby windows.
I hear you and do understand.
To clarify...My architect did not design the plumbing system. He made the ask for no vent stacks. He has done this on many other projects and there are plenty of other homes in our region with no vent stacks, as well. I know...doesn't necessarily mean everything is good.
The plumbing company generated the design and spent lots of time working it out. Lots of planning where exactly this would work properly and meet code. Their design was approved and passed inspection.
It's always possible it's absolutely awful and unacceptable, but that's how it went. Seemed like the right processes were being followed and the rules were being adhered to. I guess I got suckered?
It's not like they could just take a test and get a license AFAIK.
Agreed and yuck. Mine is vented waaaaaaaaay up near the roofline which is just over 30' high. There is no window anywhere near this. It is higher than any grade anywhere around. There are not and will not be any trees anywhere near this. There is no roof overhang. It is not anywhere near a property line. Regardless of the plumbing company's plans, the time spent planning, the approvals/inspections met...sounds like I likely have something bad, now.
Your original picture was really bad.
Your high vent is not what I would consider functionally bad, but I think it would not be allowed in most of the country. That said, if other houses near you have no roof penetration, it seems likely that there is a local amendment. I am not shocked at that. I am not a plumber. Note that usually roof vents are on the non-street side of the roof to hide them a bit.
There are usually roof penetrations to vent attics too. There can be ridge vents which don't look like penetrations. They typically don't vent as well. There also is a very nice system where attics are not vented, and the insulation at the roof envelops the attic. https://www.energy.gov/sites/prod/f...ba_innov_unventedconditionedattics_011713.pdf
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