All,
I am building a basement bathroom. I will be installing a ‘Sanitary for All’ pump. The shower will have a vent-light combination. I plan on using PVC for venting. My questions are as follows:
1) Can I combine the shower and vent pipe for the pump into one line?
2) Can I run either one or both of the venting lines up to the attic and then tie into an existing vent pipe?
3) If the shower vent is run into the attic and tied into an existing vent pipe, will the change in air temp, as the air rises, cause an excess amount of condensation build-up in the pipe such that there will be condensation ‘stuck’ in the pipe?
Thanks in advance,
dlb
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The undisciplined life is not worth examining.
Replies
Hi Pino
We just got back from the Sault. Ran into all the girls who came to watch you play there when you were pee wee or bantam. They asked what team you ended up on. I told them the Oldtimer Carpenter team like me! Still could not find a pizza place on Queen but we did find the new Steelback Centre and watched the greyhounds play.
Actually I have a little Soo item for you but I need you to email me so I can tell you about it.
Have a good day
Cliffy A.K.A [email protected]
Edited 1/10/2007 10:16 pm ET by cliffy
I'm a little confused but, then again, I'm easily confused....
When you are talking about a vent from the shower do you mean an exhaust vent for the bathroom? Which is very different from a plumbing vent that I think is what is needed for the pump and can NOT be combined. If you are talking about combining exhaust vents in the attic. I'm not sure what is allowed but I'll bet there has to be something that stops the exhaust from one bathroom from going into another bath room or kitchen.
If you mean can you combine the vent required for the shower trap, and the vent associated with what I'm guessing is a sewage pump, yes, that's normal. And it's normal to tie it into other sewer vents in the attic so that you limit the number of roof penetrations.
But just to be clear (since your post isn't quite), you cannot combine a sewer vent with the vent associated with a bathroom vent fan, or any other sort of ventillation ductwork.
Since you said "vent-light" I'm thinking an exhaust vent?
“How many observe Christ’s birthday! How few, his precepts! O! ‘tis easier to keep Holidays than Commandments.” —Benjamin Franklin
Sorry for the confusion! Can I use one vent pipe to combine both the vent from the pump and from the shower light/fan? I have the option of running a PVC pipe from the basement to the attic and once in the attic being able to tie that one pipe into an existing vent pipe which exits thru the roof.
I also have the option of using an air admittance valve for the pump and a separate vent line, run horizontally, which will exit the house at the basement level for the shower fan/light combo.
My main concern is if I can combine both into one pipe, will I have a condensation build-up in the pipe due to a temperature change as the air moves vertically thru the house, thereby never escaping to the outside.
Again, sorry for the confusion,
dlb
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The undisciplined life is not worth examining.
> Sorry for the confusion! Can I use one vent pipe to combine both the vent from the pump and from the shower light/fan? No.
Half of the harm that is done in this world is due to people who want to feel important. They don't mean to do harm but the harm does not interest them. --T.S. Eliot
Thanks. That reduces my options and gives me a more clearly defined path to persue.
Thanks again,
dlb
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The undisciplined life is not worth examining.
As Dan said no, also you cannot use an AAV on a sewage pump.
AAV's are a one way vent, sewage tanks require free air movement in both directions.
As the tank fills up it has to displace the air to somewhere & AAV's only let air in, not air out.“How many observe Christ’s birthday! How few, his precepts! O! ‘tis easier to keep Holidays than Commandments.” —Benjamin Franklin
"I also have the option of using an air admittance valve for the pump and a separate vent line, run horizontally, which will exit the house at the basement level for the shower fan/light combo."Run the fan vent out the sidewall.You can't use an air admitance valve on a pump as it needs to vent both ways.Also, depending on the layout you might need to separately tie venting for the shower, toilet, vanity drain lines to the venting for the pump.That venting then can run to the attic and tie into the existing plumbing venting. You can also tie in to venting in the walls in the upper floors wherever they are pure venting and not wet venting. If that is easier..
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A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.
You can't use one vent for the shower light/fan and a sewer system. AAV valve, no. You can't conbine both together. Most codes that I work with require a dedicated vent on a sewage ejector, that means that you can't tie anything into the sump vent. Condensation will drain back into the sewage system as long as it is run with downward pitch. Lots of luck....................................
"If all else fails, read the directions"