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Old 02-07-2007, 03:13 PM   #1
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Plumbing questions - finishing upstairs bonus room


Hello...

I am finishing the upstairs bonus room (which was just framing) and am planning on adding a new bathroom. I will have a toilet and a pedestal type sink, no shower. I have severala questions:

1. New toilet and sink drain - is my best bet to come down through the second floor and first floor to my crawl space and tie into my existing sanitary drain?

2. Can these two drains run together? and can these be vented together?

3. Regarding the new vent, what size should the vent be for the toilet and sink? The toilet floor drain should be 3" correct? The sink drain should be 1 1/2" or 2"...?

Last question - what is the easiest way to run new hot and cold water to the upstairs? Can I tap into the hot and cold sides of my water heater, right at the WH?

Thanks so much for any comments and/or suggestions...

Scott

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Old 02-07-2007, 08:12 PM   #2
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Plumbing questions - finishing upstairs bonus room


Well, first off, are you on a septic system or community waste drain?
You can run a 3" line down through the wall for the drains, using a sanitary tee at the second floor, and continue it up for the vent. Otherwise, you can use a sturdivent inside the attic space somewhere. You can also run water lines up through the walls to the upstairs, 1/2" pex should be adequate since you will not have a shower. You can rent crimp tools for pex piping to make your connections. However, be careful when you solder the water stops on the copper leads though, to much heat will melt the pex at the connection causing a leak.

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