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Old 10-29-2013, 07:19 AM   #1
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Basement Bathroom Install


Good day to all! I usually post electrical questions on this site but now I'm in the middle of planning a small bathroom install in the basement of my 1936 tudor and I have a few plumbing q's for the pros. The br will be installed in the laundry room. There is already copper hot/cold lines feeding the area, and a drain tee cut into the iron waste line coming down from the floors above for the washer. The waste line makes a hard right to exit the side of the house and is about 4 ft above the basement floor. My first question is I know I will need a waste ejector pump and basin. I've seen one installed but never actually done it before. For a ped sink, stall shower and toilet, what size do you recommend? Also, some install help! Do I need to vent the basin? Do I need to install a trap on the shower drain or just let it flow to the basin? Any how-to's or diagrams would be helpful! I will post pics of the current waste drain and location when I get home from work. Thanks!!!

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Old 10-29-2013, 04:33 PM   #2
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Basement Bathroom Install


Just purchase your self a grinder pump kit.
http://www.libertypumps.com/Products...=106&s=10&c=19

You will also need a way to vent that pump out the roof.

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Old 10-29-2013, 06:12 PM   #3
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Quote:
Originally Posted by Ghostmaker
Just purchase your self a grinder pump kit. http://www.libertypumps.com/Products...=106&s=10&c=19 You will also need a way to vent that pump out the roof.
Out of the roof?? I'm in the basement! There's a vent coming out of the outside wall about 6" from grade. It's connected to this 4" waste line. Doubt that's to code today but if I tap into that from inside I should be ok, right?
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Old 10-29-2013, 06:34 PM   #4
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Quote:
Originally Posted by Ghostmaker
Just purchase your self a grinder pump kit. http://www.libertypumps.com/Products...=106&s=10&c=19 You will also need a way to vent that pump out the roof.
btw thanks for the link. Looks like a quality pump. Any idea on cost?
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Old 10-30-2013, 07:30 PM   #5
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Basement Bathroom Install


You cannot vent out the side of a house unless it is 10 foot above grade and 10 foot away from the property line and not below any windows or a vented soffit. Most folks run it up the corner of a closet and out the roof. Remember your grinding up human waste. It smells. You also need a 90 turn down and a screen if through the side. Make sure you increase the vent to 3 inch 12 inches above and below the roof. Added benefit is you can tie your future bathroom vents into the same pipe. 2 inch is a good size. This is IPC code.
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Old 10-30-2013, 07:32 PM   #6
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http://www.ebay.com/itm/like/181101278387?lpid=82

about 1250 plus shipping.

Seems pricey but this pump doesn't jam up with sanitary napkins the family dog or anything else you manage stuffing down a toilet.

Last edited by Ghostmaker; 10-30-2013 at 07:46 PM.
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Old 10-31-2013, 12:58 PM   #7
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Thanks everyone!
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Old 11-05-2013, 08:38 AM   #8
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[QUOTE="JohnC20"]Thanks everyone![/QUOTE

Hi!
As I'm laying out the basement bathroom it may be that I don't have enough room to put the grinder pump and basin outside of the physical bathroom space. Can this be installed IN THE bathroom with an access panel to reach it should it need service??

Thanks!
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Old 11-05-2013, 06:57 PM   #9
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Yes. It has an air tight seal.
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Old 11-06-2013, 07:18 AM   #10
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Originally Posted by Ghostmaker
Yes. It has an air tight seal.
Great! I will have to set it lower than flush with the subfloor so I can 90 the discharge line at the top of the basin and the to the waste stack.

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