Hi, First off let me just thank the people who contribute here because I have spent several hours reading and searching for answers... especially speedball1~been reading a lot of your posts.

Okay so I am redoing my basement and I would like to put in a bathroom with a shower sink and toilet. My main drain is 3" and about 12" off the floor. I have decided my best bet is to install a waste pump sump and drain the three fixtures into it. I have been trying to learn and study this as much as possible but am still at a loss with a few things.
First do I tie these together and then drain to the basin?
If not what is the best way to run these and vent them?
Do they have to be vented separately or can I vent them together?
How far down will I have to tear up the concrete to install the toilet and shower?
Well I guess that will get me started... I will try to take some pictures because I have drainage and venting coming through the ceiling from the first floor bath and perhaps I can tie into that vent for the fixtures and run a separate designated vent for the basin? Anyway thanks for any help you can give me!

1) do I tie these together and then drain to the basin?
2) If not what is the best way to run these and vent them?
3) Do they have to be vented seperately or can I vent them together?
4)How far down will i have to tear up the concrete to install the toilet and shower?
1) Yes, They will all tie together and drain to the holding tank, (see image)
2)Answered in #1
3) On a pit under the floor There will be two vents. The pit vent which is a dedicated vent that must be run out the roof separately and may not be tied back to the house vents. There wil;l be another venting the fixtures that may be tied back to the house venting. However on this installation I only see one.
4) As you can see by the image I've put the pipes will be above the cement. In Saniflo the holding tank's behind the toilet bowl.

All this should be explained in detail with your instruction sheet.
Good luck and thanks for the nice words, Tom

Thank you for your quick response Tom, I have looked at the saniflo products and am not too sure I want to go that route. I have read mostly good reviews but have also read some not so good ones, plus I really don't like the idea of seeing the pump box and pipes, perhaps there is a way to hide them, I will call them and ask, I know for one of there systems the pipes and pump is hidden behind a wall but you are supposed to raise your toilet and shower on a platform which I do not wish to do either. I know getting a jackhammer and ripping up my floor is not the eaisiest way to do it, but I think it might be the best way in the end.
I have very little experiece plumbing but so far I have been able to do everything else in my home and am hoping that this will come out just as well. I do appreciate your input and would really appreciate some input as I get close to this undertaking. I will try to come up with some diagrams to run by you to see if everything looks as it should and up to code. Thanks again Tom
Michael

C lick on;Sewage ejector basin assemblies and pumps - Zoeller and Little Giant brands PlumbingSupply.com (http://www.plumbingsupply.com/sewage.html)
To check out more systems and let me know. Tom

Hey Tom,
Just wanted to check in. Still not ready to do the work but I have decided on this system
Liberty Pumps : Simplex Packages (http://www.libertypumps.com/Products/Category/SubCategory/Product/?p=71&s=10&c=18)
It will have a 1/2 hp pump and a two inch outlet...
Right now I am still finishing the other side of my basement which I will be done with in the next couple days and then I can move all our stuff to that side and start on the side where the bathroom will be... I will have to frame it all in plan it all out and frame it before I get to doing the bathroom so it might be a couple weeks but I am looking forward to it and appreciate your input.
Michael

Although it allows you to revent the pit vent back tpo the house vent I would run a dedicated pip vent or revent in the attic to a vent close to the exit point. Good luck, Tom

It does... I didn't realize that, I was planning on going out the roof with the vent from the pit and tying the vents from fixtures in with the exsisting vent in my attic.
When I begin to plan the set up of fixtures, is there a certain order they should go such as toilet then shower then lav?
Thx Tom


Hi Tom,
So I have a picture of my bathroom soon to be. Right now it is just the corner of my basement and the only thing that is there is the foundation walls and the main drainage pipe as drawn out in this picture.
Can you please help me with placement of fixtures, and pipes and drains. I would like to have a shower stall, toilet and lav.
Will these dimensions be adequate for this?
Thank you very much for your help,
Michael http://i120.photobucket.com/albums/o161/mikect05/basementbathroom001.jpg

Can you please help me with placement of fixtures, and pipes and drains. I would like to have a shower stall, toilet and lav.
Will these dimensions be adequate for this?
It's a little tight at five and a half feet but it will fit. Are you pullng a permit on this job?
The fixtures will rough in the usual way. Toilet connects to the pit. Lavatory connects to toilet drain and runs a vent off the top the stubout tee out the roof or revents back into a dry vent in the attic.. The toilet wet vents through the lavatory vent and the shower connects to the lavatory drain and is wet vented by it. This is a normal rough in and is acceptable both by local and state codes and also The Standard Plumbing Code Book in 90 percent of the country. Check your local codes to make sure you're not in the excluded 10 percent.. To lay it out any other way add more vents. The vent off the lavatory may be run out the roof or revented back into a dry vent in the attic or if you're reventing back into a fixtures dry vent you must make your connection at least 6 inches over that fixtures flood rim
The pit vent must be a dedicated vent all by itself. The reason is that it not only vents air in as it pumps bet also expels out as the fixtures drain into the pit. This will create pressure in the vent system that could push sewer gas out of a trap. Although I think it would be acceptable to cut in a inverted sanitary tee close to the roof line on a house vent and save cutting another hole in the roof. Remember to slope the vents back to the pit. Good luck, Tom

http://i120.photobucket.com/albums/o161/mikect05/basementbath001.jpg

Thanks AGAIN Tom,

Well I have been working on diagraming this out all morning and was not sure if I could wet vent, so here is what I came up with. However since reading your post I will plan on doing it different. But I will post my picture anyway to give you a better idea of what I am working with when it comes to my exsisting drain and vent.
Michael


http://i120.photobucket.com/albums/o161/mikect05/wetvent001.jpg

How is this for a wet vent? And what size should I use for the vent, should I just run 2" off the lav?
Thx Tom.

How far can the shower be from the lav for the wet vent to be code? I think I am stretching it because the shower drain is about 8' from where it will join with the lav.
Can I run a 4" from the toilet, and run the shower into that and then run the lav in down from that? Or would I have to vent between the shower and the toilet in that scenerio?
Thank you,
Michael

How far can the shower be from the lav for the wet vent to be code? I think I am stretching it because the shower drain is about 8' from where it will join with the lav.
Will this be inspected? It depends on the code you fall under. Some codes give you from 5 to 8 feet on a 2" drain. I think you can slip through with 8 feet for a wet vent.


Can I run a 4" from the toilet, and run the shower into that and then run the lav in down from that? Or would I have to vent between the shower and the toilet in that scenerio?
In that case both the shower and the lave would have to have vents.
Good luck, Tom

Yes it is getting inspected, I was told that I can go up to 8' and by my measurement I am just under that, so I think I should be okay. Thx Tom