Earl001
New Member
DWV layout question (with figures) for sunken tub
Hi everyone,
I have an older single story home on a raised foundation. Over the past 10+ years I've been replacing the old steel piping in the crawlspace under the house with equivalent ABS runs following the same DWV layout that existed previously. For example, in the remodel of the kids bathroom tub/shower I've utilized the previous standard stack layout as shown below
However, in the process of remodeling the master bathroom I've run across a difficulty with the existing layout. Unfortunately, the master bathroom is at the farthest end of house and I've reframed the bath as a sunken whirlpool. If I follow the above layout, I can not maintain the 3" main line run (approximatly 24 ft long) at 1/4 in/ft. I'm getting perhaps a 4.5" to 5" drop instead of the required 6".
So my question is: what can I do? Is a run sligtly less than 0.25 in/ft going to be a problem? My preference is to use the following layout but I've not seen it used elsewhere in my house. Does this violate plumbing code (UPC)?
Any comments are appreciated!
Hi everyone,
I have an older single story home on a raised foundation. Over the past 10+ years I've been replacing the old steel piping in the crawlspace under the house with equivalent ABS runs following the same DWV layout that existed previously. For example, in the remodel of the kids bathroom tub/shower I've utilized the previous standard stack layout as shown below
However, in the process of remodeling the master bathroom I've run across a difficulty with the existing layout. Unfortunately, the master bathroom is at the farthest end of house and I've reframed the bath as a sunken whirlpool. If I follow the above layout, I can not maintain the 3" main line run (approximatly 24 ft long) at 1/4 in/ft. I'm getting perhaps a 4.5" to 5" drop instead of the required 6".
So my question is: what can I do? Is a run sligtly less than 0.25 in/ft going to be a problem? My preference is to use the following layout but I've not seen it used elsewhere in my house. Does this violate plumbing code (UPC)?
Any comments are appreciated!
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