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Old 02-16-2018, 01:56 PM   #1
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Help with basement plumbing plan


I've been on the 8 year plan for finishing my basement. But THIS is the year I actually do it. As part of it, I'm going to be putting in a bathroom. The house is 100+ ;years old, so who knows what's going on. However, I have floor drains, and presumably a cast pipe going down the center of the house. There's a vent stack and a soil stack toward the area of the new BR than run horizontally above grade, tying into another soil stack (I'm not sure if this one continues to the roof or not), which then goes into the ground and I assume runs to the main waste line. The pic is hopefully clear. (Blue lines are what I think are underground, red is what I can see).
So how should I plumb the drain and vent lines? I should mention that the north wall is a common wall, so can't go that way to vent. Also everything is brick/plaster, so anything interior above the basement would be...challenging. Getting out the west wall would be easy, but not sure what then.
Thanks, I'll have more questions about the design as I go...
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Old 02-16-2018, 02:08 PM   #2
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Re: Help with basement plumbing plan


Perhaps a layout of kitchen and bath room above would help. Can you peek in the attic and see where pipes come up and maybe join together.
Are you sure the floor drain is attached to the sanitary?

The plumbers will be along shortly.
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Old 02-16-2018, 07:13 PM   #3
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Re: Help with basement plumbing plan


The attic is pretty inaccessible. I can get to the roof though. I should have mentioned that the kitchen is on the north side, with the sink drain being 4' on the other side of the proposed bathroom. Not sure how it's vented though. The 2 2nd floor bathrooms are above the main soil stack. They're right next to each other, toilets probably 5' or so apart. The first floor half bath is above soil stack #2.

"Are you sure the floor drain is attached to the sanitary?"

Not sure what is the sanitary?
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Old 02-16-2018, 07:37 PM   #4
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Re: Help with basement plumbing plan


Quote:
Originally Posted by nola mike View Post
The attic is pretty inaccessible. I can get to the roof though. I should have mentioned that the kitchen is on the north side, with the sink drain being 4' on the other side of the proposed bathroom. Not sure how it's vented though. The 2 2nd floor bathrooms are above the main soil stack. They're right next to each other, toilets probably 5' or so apart. The first floor half bath is above soil stack #2.

"Are you sure the floor drain is attached to the sanitary?"

Not sure what is the sanitary?
Sanitary is toilets and storm is a street drain for rain water downspouts and things. Some older areas they are the same.
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Old 02-16-2018, 08:42 PM   #5
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Re: Help with basement plumbing plan


Ah, yes then. Everything drains into the main line.
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Old 02-17-2018, 05:04 AM   #6
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Re: Help with basement plumbing plan


you will need to camera floor drain condition
& locate termination before proceeding
further I believe you challenges of house age,
potential plumbing age, & structure will dictate a professional
you might be able to hire a plumber to just do the rough-in plumbing

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