Hi first let me say thankyou in advance, My situation is this. I am trying to ruff some plumbing in for a friend on his new home before his floor in the basement is poured....I have a pic of the plans I am looking for help with the layout vents....pipe size ect..if anyone responds and can give me a hand I would appreciate it I can send you pics of the plan..below is a link to the plan I think will work

[drive.google.com]



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Can you upload the pics here?

Upload to a free hosting site like Photobucket. Then post the link here with the image brackets

[drive.google.com]

I think this link will work

How about a layout of what fixtures and their locations. The only thing I see is a vanity.

[drive.google.com]

this might get us started

This what I think I need ....2" pvc up thru concrete for sink, 2" pvc pipe thru concrete for shower with p trap in concrete, 3" or 4" up thru concrete for toilet if I use 4" I dont have to leave a gap around pipe because the toilet drain can be a slip into 4" so im told....

Typically the shower trap is boxed in to leave a square access.

I'm not a plumber but I'm an avid reader here and over at another site.

The guys here and there are really helpful but, and this is just my opinion, I think you would be better off if you at least did a rough hand sketch of how YOU think it should be laid out and with what fittings.

Then the guys can correct and steer you in the right direction.

I think, at the very least, you should note where the ejector pump, if applicable, will be located. In utility room? Or elsewhere not to interfere with, say, where the builder is placing a furnace. It looks like the main waste line is noted there. That kind of stuff.

Take a look at this discussion drawing for an idea how to note fittings you intend to use:

[www.plbg.com]

Depending on how knowledgeable you are with names and uses of fittings, this might also help:

[www.co.lincoln.or.us]

Also, see this discussion with photos

[www.plbg.com]



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Look here also

[www.plbg.com]

Is this a gravity or pumped system? Your diagram seems to indicate it is gravity.

Im going to work on that drawing and repost it so I can give an idea what I think I should do...No this isnt a pump system, the septic is low enough to be gravity fed from the basment level as the drain outlet is 20" below floor grade

[drive.google.com] this is the plumbing layout I made

[drive.google.com] this is the print



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Your "stack vent" is completely useless at the point where you show it, and HOW you turn the tub/shower and sink drains will determine whether you need additional vents. IT is almost impossible to run a sink drain without its own vent, however.

[drive.google.com]


Here's what I did

The "main vent" at the corner is still useless and you used a sanitary tee on its back for the toilet, and vent.

See page 8 of those "plumbing tips" I posted. It says using the San tee vertical is the most common mistake. It needs to be a combo y 1/8 bend.

I'm not a pro. It m not a pro but I'm very interested in these layout threads as I have a project coming up. Learning from your mistakes

Does that 90 in the far corner need to be a longer sweep? It's hard to tell (for me at least)

you should have the tub drain into the back of the "Y" with the side rolled up and used as a vent. this will get the vent between the toilet and the tub trap.
also use an 4 x 3 elbow for the toilet. then you can pour the cement right up to the 4 inch sticking thru the floor. the for the finish you insert the flange into the pipe which is cut flush with the floor.