New bathroom (Drain)


  #1  
Old 09-10-06, 03:35 PM
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Question New bathroom (Drain)

Hey all,

First time I've ever done this, but i'm desperate for info. Hope someone can help. I have a 19x19 garage that I'm finishing for interior living space. Walk in closet, den and bathroom. My concern is that to put in the bathroom I want I have to run drainage for the shower, tub and toilet, approximately twenty feet to the central draing for the house. I don't know how far down I have to drop the drain over that distance. (i.e. ?? feet = ?? inches drop). I have one advantage because the garage sits 14 inches below the floor level of the rest of the house and I am going to put in joists to support the floor. I have a feeling I am not going to avoid digging into the floor, but here's hoping. Any ideas/thoughts?
 
  #2  
Old 09-11-06, 09:05 PM
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Sewer and drain lines need to have a slope of 1/4 inch per foot of run.

If I haven't screwed up in my arithmetic the outlet of your drain needs to be five inches lower than the inlet.
 
 

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