what I have in the basement is a bathroom roughed in with the sink, toilet and tube in the concrete floor. There is a bathroom above this bathroom that is not vented trough the roof. It has a studor value under the sink. The studor vent is the only vent for the 1st level batch.

The main sewage line for both bathrooms go though the basement floor. The builders should have put a vent to the roof from the 1st level bathroom, but they did not. The house was built in 2000.

Can I use a studor vent in the basement floor. Plan on bring it up to amost the ceiling and going out the back wall into a closet. It is almost impossible to put a vent to the roof from the basement. I have a ranch.

I do have the option of connecting to a vent that is about 45 feet away from the basement bathroom, but I think that bathroom vents need to be within 6 feet of the toilet. I don't know what the maximum distance of a horizonal vent can be.

Second question is I will have a wet bar the will have an under the sink pump (a flotec closed box that fits under the sink) that will pump up to the current upstairs plumbing. I have two options. 1) can I connection to the 3 inch plumbing in the basement ceiling that comes off the toilet? Or 2) should I extend the sink drain to another basement waste pipe that is about 15 feet away. This pipe one serves the upstairs shower, sinks and washer.

I think a pump needs a full vent to the roof. Or can I use a stodor vent?

The builders did not rough in any vents to the basement.

A vent is required for the pump
Maximum developed length of vent
1 1/2" - 100 feet
2" - 100 feet
3" - 680 feet.
4" - 750 feet
Sbcci code page 69 chapter on vents

a vent is required for the pump
maximum developed length of vent
1 1/2" - 100 feet
2" - 100 feet
3" - 680 feet.
4" - 750 feet
sbcci code page 69 chapter on vents

The SBCCI doesn't specify how much of the developed length can be horizontal versus vertical?

It did at one time.

it did at one time.

Man, you guys have it so easy down there.

60 feet for 1-1/2"
120 feet for 2"
212 feet for 3"
256 feet for 4"

And no more than 1/3 of it's developed length may be horizontal unless increased by one pipe size -- Which means a few feet can be the difference between meeting your cross sectional VTR requirements or starting all over.

I'm in the metro Atlanta area.

So, vent is required for the pump. I don't think I will have too much of a problem with that. I just will run a vent adjacent to the vent that is going up from the toilet and attach in the attic.

2) can I use a stodor vent in the basement bath? The first floor bath does not have a vent at all. It has a studor vent. Both the first floor bath and the basement bath go out the same 3'' sewer pipe. (there are 3 sewer pipes in all). So, the sewage pipe ties to both bathrooms and there will be no dry vent to the roof. Is that OKay? Or would it be okay to put a studor vent in and run a 2'' pipe for that bathroom and tie into the vent I'm putting in for the pump. The bathroom is about 45 feet away from the pump.

Another question. Can I just run the pump waste water to the 3'' toilet waste water? I will pump it up about 3'' above the toilet waster water pipe.

One last question: I'm putting in a utility sink. Does that really need a vent?

So, vent is required for the pump. I don't think I will have too much of a problem with that. I just will run a vent adjacent to the vent that is going up from the toilet and attach in the attic.

2) can I use a stodor vent in the basement bath? The first floor bath does not have a vent at all. It has a studor vent. Both the first floor bath and the basement bath go out the same 3'' sewer pipe. (there are 3 sewer pipes in all). So, the sewage pipe ties to both bathrooms and there will be no dry vent to the roof. Is that OKay? Or would it be okay to put a studor vent in and run a 2'' pipe for that bathroom and tie into the vent I'm putting in for the pump. The bathroom is about 45 feet away from the pump.

Another question. Can I just run the pump waste water to the 3'' toilet waste water? I will pump it up about 3'' above the toilet waster water pipe.

One last question: I'm putting in a utility sink. Does that really need a vent?

a studor [or oatey] vent is for convenience and to save money from not having to vent. They work, but not nearly as well as a vent because the only allow air in, they can not breathe. Toilets tend to get lazy with a studor vent.
a pump is not allowed to be connected less than 10 feet downstream of a fixture [toilet] and definitely not upstream of it
on the utility sink, as long as it does not has a disposer, you can run a 2" pipe [watches plumbers cringe] and a 2" 1/4 bend with a 2" x 1 1/2" bushing and a 1 1/2" master trap. It looks like an s trap but is called a combination waste and vent. The only 1 1/2" must be on the trap and connection to the wall.