Drain Advice

cybervex

cybervex

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Great forum!!!

I am building a new home and it is time to start installing the drains. I have attached a pic of what I plan to do. Could someone confirm if this is possible.

plumbing_drain_1a.jpg


Should I connect the tub and sink before or after the vent. Or run the 1.5 all the way down to the crawl and connect there. The wall in the 1st flr half bath that contains the stack is 2x6 so I have plenty of room in the wall.

Thanks in advance for any assistance.
 
You need to run a separate vent to the first floor and whether everything is vented depends on how the lines are run. There is not enough information in your drawing to say whether what you are proposing is correct or, not.
 
piping

The first floor is not vented, and you are using too much 1 1/2" on the second floor. An inspector would have a problem with that vent that drops back down to the 3" at the roof.
 
Why do you have a "Can" upstairs and a "tiolet" downstairs? :) That's getting better. I'm not sure the "Can" and tub can share a 1-1/2" pipe though. You may want to run those seperately back to the stack. If you extend the first floor vent up to the second floor vent you won't need two three inch stacks coming down from up top.

Of course you're showing this all in 2D. It's going to be tough to guanrantee that you'll have enough drop, not be crossing joists, etc.

Jason
 
Getting closer.

Hopefully this is ideal. I added a side view, but did not add the 1.5" pipe. I should have enough room in between the trusses to achieve the drop.
 

Attachments

  • plumbing_drain_2b.jpg
    plumbing_drain_2b.jpg
    47.8 KB · Views: 359
Where is this being plumbed, that you would even consider using a 1-1/2" tub or shower waste line?
With UPC code, the toilets always require at least a 2" vent.
 
Terry said:
Where is this being plumbed, that you would even consider using a 1-1/2" tub or shower waste line?
With UPC code, the toilets always require at least a 2" vent.
Click to expand...

It will all be 2" Don't know why I keep thinking 1.5. My fingers just keep wanting to type 1.5 not sure why when all the PVC I bought is 2"
 
pipes

You were doing good with the second drawing, but managed to screw it up with the third one. At least make everthing below and to the traps, plus the toilet vents, 2". Above the traps the vents for the tub, shower, and sinks can be 1 1/2".
 
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