Drainage Help 2

Hi,

Since my first posting I have ran into a much big problem that is causing the bubbling at my sink. First of all the existing plumbing layout is as follows:



The problems I found are:

1. The pipe pitches away from the main stake
2. After the T that the tub runs into also pitches away from the stake
3. The way the vent is hooked in water actually backs up into it and has caused a build up which has almost blocked the vent.

So basically when the tub is drained it is backing up into the sink.

With that being said the drawing below is my new layout plan and I was wondering if anyone can tell me the best place to hook the vent into the line? It can be easily hooked into any locating except to the sink.



Also, I just purchased an abs bushing to reduce my 3" cast iron hub to a 1.5" abs pipe. The plumbing supply store sold me a type of rope that is coated with a grey powered that when water is added you use to fill the joint in the cast iron hub, can anyone tell me what this product is called because I have forgotten what they called it.

Thanks for any replies,
Dan

Better but to start with the sink and tub each need their own vent .

vent

The sink is where the vent MUST go. Otherwise you are wasting your time. Plumbing is only a DIY project when you know what you are doing. At this point you do not seem to and should hire a professional to do it correctly.

hj said:

The sink is where the vent MUST go. Otherwise you are wasting your time. Plumbing is only a DIY project when you know what you are doing. At this point you do not seem to and should hire a professional to do it correctly.

Click to expand...

I wouldn't say that I don't know what I am doing. I am just here to consult on the best placement of the one vent I have. I understand that I should have a dedicated vent for the sink & tub but at this time my budget will not allow me to have someone in to run a line through the roof.

Would it be best to run the vent through the floor and hook it in at the sink or would it be best hooked in at the tub?

I am also thinking of using a AAV as someone suggest at the sink for the time being until times are better and I can bring someone in to run a proper vent to the sink.

How to use "us". Instructions for use.

dan,
if you are persistent, your knowledge level will improve visibly and quickly between each post.

Try this:
1. before each new posting, work a lot at refining your terminology and your questions. You might want to write it all out and edit it on the side for a few days each time.
2. In your next post, attach new diagrams, showing a side view and a top view. This will help those who might want to help you, to know what is horizontal and vertical. No point using more words, at this stage.

The goal is to show what you have, now. Then, someone's comments may help you. No point asking questions until people can "see" what you have.

If you really have very very little money, return all the stuff you bought so far until you know 100% for sure that it is the right thing for the right purpose.

Good luck.

David

Okay thanks for the reply, below is a side view of what I propose to do:



All pipes will be properly pitched to the main soil stack. With the vent placement in the drawing it is approximately 2ft from the tub trap and 5.25ft from the sink trap. This is the only placement I can figure out that will stop water from backing up into the vent.

dan

this drawing is clearer.

You drew a "Wye" to connect the tub arm to the drain line. That is good.

I think, but I am not a plumber, that you'll have to re-draw this drawing making these two changes.

1. Add an AAV Studor to where the sink is.

2. Use a Wye and a 45-degree bend to connect the sink arm to corner where the Cleanout is. Then, the cleanout is at the end of the Wye and the sink arm drains with a gentle bend into the drain.

Take your time to understand all this. Don't resist. Read up and learn. I may be wrong about these two points, but if I am you'll find out when others post their remarks. Wait 48 hours.

I'm going to step out of this thread for a while. Others can take over here, if anyone wishes to come in and help out.

David

Thanks for the follow up David and I will make the changes you suggested.

I ran into this drain problem well I was renovating the two center rooms of our 96 year old house. We had a drop ceiling and above that there was 3 layers of ceiling and when I took it all down I found the drain problems as well as many live knob & tub lines that had just been plastered over.

The costs associated with the drywall, trim, new floors and having an electrician re-feed half the house there is just no funds left for a plumber on top of it all. All I really want to do is make it function in the best way I can with whats already in place until a couple years down the road when we can gut out the bathroom and redo everything.

Hi, I'm just following up that I completed all the plumbing and rectified the pitch problems, bubbling noises and have stopped the vent from flooding with water.

Also, well I was removing the abs pipe from the cast-iron hub I noticed that a previous owner had pushed the pipe about 2" inside the cast iron stake and a squirrel had dropped a nut between the abs pipe and the inside wall of cast iron, which I’m sure caused half of the drainage problems we were having.

I have yet to order the studor vent for the sink but even without it there is no loss of water in the sink trap so the vent near the clean-out is doing its job. I have roughed in for the studor vent though and will add it in the near future.

Thanks Again for the help,
Dan