Additional toilet vent required?

[jackbrad]

Thanks to all you who have asked similar answers in others posts, I have researched this a lot and I would really appreciate a first hand review.

My toilet drain here is on its own branch. Nothing sharing the branch. It connects to the main horizontal drain line a few feet away. The drain stack is also a few feet away and about a foot up the main horizontal drain. I asked my inspector (UPC in Florida) if it needs and additional vent and he did not really have a comment on it. He just approved it. My final for rough in will be at the end of the week. I don't want this to come up as and issue if another inspector has a different opinion. I could catch the washer vent a few feet down the line but, the house has floor joists about every 10-12 inches and the vent and there is a floor beam in the way.

Do I need and additional vent for the toilet branch?
Video with description

 

[Tuttles Revenge]

What type of inspection did you have? In our area, inspectors generally won't give you advice on how to install the plumbing.. unless they're just that type of person, then they won't shut up about it.

A single bathroom can be vented by horizontal wet venting where all the fixtures in that single bathroom share the same vent, but no fixtures from the floor above or any other fixtures can drain through that HWV area.

On your diagram, which pipes are which? The red one is the toilet, which direction does the drain it connects to slope? how do they all connect to the main drain?

 

[Sponsor]

 

[jackbrad]

What type of inspection did you have? In our area, inspectors generally won't give you advice on how to install the plumbing.. unless they're just that type of person, then they won't shut up about it.

A single bathroom can be vented by horizontal wet venting where all the fixtures in that single bathroom share the same vent, but no fixtures from the floor above or any other fixtures can drain through that HWV area.

On your diagram, which pipes are which? The red one is the toilet, which direction does the drain it connects to slope? how do they all connect to the main drain?

Great questions. My inspector is nice. I tried to update the document to be more clear on what each things does. My apologies. Appreciate your reply.

 

[Jeff H Young]

First time Ive heard Florida has UPC it should be IPC code I thought? Inspector likely dosent know plumbing likely a combo inspector. In the real world dont rely on inspectors to anything about anything , some might know electrical or maybe he was a roofer .
I dont know horizontal wet venting that well but it looks like it would work ok it might matter what plumbing is upstream of the branch to w/c though

 

[Reach4]

In doing horizontal wet venting, you should not combine non-bathroom waste thru the wet vent area. I think that is pretty much the same for all codes. In IPC, if that "rest of house" is just another bathroom, that may be fine. But if it includes kitchen or laundry drains, that is not fine.

For IPC, see picture on page 12 https://www.iccsafe.org/wp-content/uploads/20-18927_GR_2021_Plumbing_Venting_Brochure.pdf for a big wet vent example.

 

[Jeff H Young]

Op dosent show additional waste through the wet vent but I suspect there is could be just a clean out but doubt it. He passed inspection if it was a bar sink Id let it go a laundry room or additional bath room Id be digging into code

 

[jackbrad]

First time Ive heard Florida has UPC it should be IPC code I thought? Inspector likely dosent know plumbing likely a combo inspector. In the real world dont rely on inspectors to anything about anything , some might know electrical or maybe he was a roofer .
I dont know horizontal wet venting that well but it looks like it would work ok it might matter what plumbing is upstream of the branch to w/c though

Correct on IPC... I messed that up

 

[jackbrad]

Op dosent show additional waste through the wet vent but I suspect there is could be just a clean out but doubt it. He passed inspection if it was a bar sink Id let it go a laundry room or additional bath room Id be digging into code

In the drain stack there are two shower drains from upstairs.

 

[Jeff H Young]

In the drain stack there are two shower drains from upstairs.

didnt notice direction of flow ... so this is plumbed upstarirs showers need to join the main down stream of the toilet