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Author:
ghaun (PA)
All,
I have posted parts of this scenario in another forum, but was hoping to get better consensus.
I am having trouble venting a tub within my bathroom. It is a free-standing tub in the middle of the floor. Please see the attached picture for my explanation. I do have a vent in the up-stream direction with a sink not too far away, which I was originally going to drain into a separate branch. My thought was to try to use that vent for the tub. This up-stream direction would be perpendicular to floor joists; though, I do have a soffit directly below. I could tie into that vent, if I could turn the drain into a wet-vent using the vanity as the "washing" for the vent. I would have to go vertical and then go horizontal and back to vertical. Each vertical section would have a separate dry vent. See the attached picture for my deliberation.
Thank you for your assistance!
[1drv.ms]
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Author:
bsipps (PA)
If the actual plumbing is oriented the way it is in the pic the tub will already be vented as long as the tub drain itself is 3'or less you should be fine...12gpm shower wow that's alot of fixtures
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Author:
ghaun (PA)
bsipps, thank you!
I was trying to determine if I would be better using a vent off the branch, like a circuit vent and then use the vanity to wash that dry vent, even though the vanity was not being vented by the circuit ....or use the vanity as the wet vent with my offsets and revents. Unfortunately, I need the offset in the vanity drain, which is why I had the additional vents. I just couldn't find anything in the code that explicitly handled this situation. My vents are washed, which seems to be the main concern for vents that are "wet", and I would have a dry vent at every vertical to horizontal transition.
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