Hello. I am needing to tie in a new drain line coming from a new 2nd story bath as part of 2nd story addition project. The drain line from the 2nd story ends up in the crawl space and will meet the condition as shown in the photo. I have also drawn a simplified sketch showing what each line currently is.
My new bath and its associated fixtures have their own vent line(s) from bathroom, up into attic, and through roof, so this question is just about the drain line (which will be 3").
Points indicated in my sketch as "A" and "B" are both reasonably easy points to tie into.
Are either/both of these points acceptable, in so far as they will not interfere with the existing 4" vent stack functionality? "A" is preferable as it is lower and easier to get the required slope, although "B" is doable with more work.
Any thoughts greatly appreciated.
Thank you.
My new bath and its associated fixtures have their own vent line(s) from bathroom, up into attic, and through roof, so this question is just about the drain line (which will be 3").
Points indicated in my sketch as "A" and "B" are both reasonably easy points to tie into.
Are either/both of these points acceptable, in so far as they will not interfere with the existing 4" vent stack functionality? "A" is preferable as it is lower and easier to get the required slope, although "B" is doable with more work.
Any thoughts greatly appreciated.
Thank you.
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