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Old 06-26-2011, 06:54 AM   #1
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Thinking about adding a half bath in basement


Hi all,

I am sketching ideas for finishing the basement and it makes sense to add in a half bath. I'm a novice at this and I am having a hard time visualizing how the sewer lines will connect to my main line out of the house. I would think that with the current position I won't be able to tie into it and obtain flow via gravity. I've attached a picture for your review and am willing to listen to any and all ideas.

Thanks!
Jason


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Old 06-26-2011, 06:59 AM   #2
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Thinking about adding a half bath in basement


Upflush toilet. Google "saniflo". Expensive but they work pretty good.

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Old 06-26-2011, 07:11 AM   #3
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Thinking about adding a half bath in basement


Plan on digging a hole for a sewage pit/pump.

Pits with lid--about $60-- Good pumps--$300 to $400
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Old 06-26-2011, 10:01 AM   #4
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Thinking about adding a half bath in basement


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Plan on digging a hole for a sewage pit/pump.

Pits with lid--about $60-- Good pumps--$300 to $400
Any more info/articles on this? What about code references?

Thanks,

Jason
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Old 06-26-2011, 10:23 AM   #5
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Thinking about adding a half bath in basement


That is the standard ,and has been for about 40 years. I wonder if you already have one?

Typically in a house with an elevated sewer line there are two pits---one sump pit for storm water that is pumped outside and another for sewage (laundry sinks,furnace condensation and floor drains) that is pumped into the house hold drains .

This pit will have a sealed lid and a second pipe that is a vent for sewer gas.

Use google images for sewage pit----Mike---
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Old 06-26-2011, 10:34 AM   #6
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Thinking about adding a half bath in basement


One of the licensed plumbers will be along shortly with code references and perhaps a picture or better description for you.---Mike----
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Old 06-26-2011, 09:20 PM   #7
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Thinking about adding a half bath in basement


Quote:
Originally Posted by oh'mike View Post
That is the standard ,and has been for about 40 years. I wonder if you already have one?

Typically in a house with an elevated sewer line there are two pits---one sump pit for storm water that is pumped outside and another for sewage (laundry sinks,furnace condensation and floor drains) that is pumped into the house hold drains .

This pit will have a sealed lid and a second pipe that is a vent for sewer gas.

Use google images for sewage pit----Mike---
I google'd "residential sewer pit" and I don't think I have one of those. I also traced the main sewer line in the house and it's a straight shot out as seen in the photo I posted above.
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Old 06-26-2011, 10:19 PM   #8
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Thinking about adding a half bath in basement


You'll want what we call a grinder pump (capable of pumping solids). It's used when you have to pump a toilet as well as a shower and lav.
Plan on supplying a separate elect. circuit to the pump and a 2" vent that will tie into your existing vent system, or if required, vent through the roof.
The pump will be sized by how high you need to lift the waste before it ties into your building drain. Yours appears to be about 6'.
You will plumb your new fixtures as normal, including vents. Then run the under slab sub drain to the pump basin. From there, the pump will lift it to your existing building drain.
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Old 07-06-2011, 09:32 PM   #9
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Thinking about adding a half bath in basement


Quote:
Originally Posted by oh'mike View Post
That is the standard ,and has been for about 40 years. I wonder if you already have one?

Typically in a house with an elevated sewer line there are two pits---one sump pit for storm water that is pumped outside and another for sewage (laundry sinks,furnace condensation and floor drains) that is pumped into the house hold drains .

This pit will have a sealed lid and a second pipe that is a vent for sewer gas.

Use google images for sewage pit----Mike---
What is this? It is in the floor of my basement in the corner. The PVC pipe going into it comes from the HVAC system condensate drain. The top of this thing is kind of sealed, do I want to open it up to see what is in there? Is this something that could be used for the bathroom project?


thanks for the knowledge!
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Old 07-07-2011, 05:36 AM   #10
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Thinking about adding a half bath in basement


Sure,open that thing and see what's going on.

I see no pump pipes exiting the pit---odd.
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Old 07-07-2011, 04:17 PM   #11
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Thinking about adding a half bath in basement


Well I'm not impressed. It's a sump basin with no sump. However, there is an active HVAC condensate line that drains to it. I suppose the builder didn't think about what happens once the basin fills up with condensate? That really frustrates me. :-/
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Old 07-08-2011, 06:38 AM   #12
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Thinking about adding a half bath in basement


The house may not have had an air conditioner when built. The heating installed should have spotted that.


Often it's cheaper to locate a new pit closer to the bathroom----cutting and trenching across a room is a waste of time and money---

If you wish to cure the pumpless pit---look into a 'condensate' pump --tiny pump/basin that hangs from the side of the furnace and is then piped (tubing) to an over head drain pipe.
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Old 07-08-2011, 07:16 AM   #13
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Thinking about adding a half bath in basement


Quote:
Originally Posted by oh'mike View Post
The house may not have had an air conditioner when built. The heating installed should have spotted that.


Often it's cheaper to locate a new pit closer to the bathroom----cutting and trenching across a room is a waste of time and money---

If you wish to cure the pumpless pit---look into a 'condensate' pump --tiny pump/basin that hangs from the side of the furnace and is then piped (tubing) to an over head drain pipe.
The house was built in December '10.

I think I may just go with an upflush toilet like a Liberty Ascent or Saniflo.

Any experience with these types?
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Old 05-22-2013, 09:54 AM   #14
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Thinking about adding a half bath in basement


Thanks for the info. I was transferred with my job and we sold the house in July '12.

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