/diy/ - Do It Yourself

>>1284311
So the vent is running from far side of basement in the ceiling joists. The once it reaches wall of bathroom, t it off into 3 parts. The vanity drain is tied into the toilet as it's vent (wet vent. The drawing is off I just realized the location of where the vent ties in will be after the toilet hub), the vent branching to the right of that will drop down the same wall then 90 out under the ground over to the shower drain. The vent headed left is going to be used to vent the laundry tub in the utility room beside it (the drain for that I can manage to tie into the stack with the drain running along the utility room wall).

Anyways I know my blueprint sucks but basically I'm wondering if I can vent all 4 fixtures by branching them off of a 1.5" existing vent or is that too much strain?

I redrew the blueprint. I think this one is more accurate

>>1284321

If you are talking about the vent that goes up to the roof then yes. My bathroom and laundry room share one roof vent for the sink, bath, toilet, and washing machine.

what is a wet vent?

>My question is can I use that and t it off into 3 seperate vents from the same line ...

This question is simple enough that your lengthy description of what pipe goes where and diagram are superfluous.

You have a 3" drain serving multiple fixtures. Your minimum vent size is going to be half the size of the 3" drain (1.5" vent). It doesn't matter if you have 1 thing on that 3" drain or 1000 as the bottleneck will be the 3" drain.

Make sense?

>>1284364
A wet vent is where the drain for your sink (which is vented in itself) also acts as the vent for your toilet.

Hard to explain via text.

Pic related

>>1284368
Yes. Thank you. I gave a lengthy explanation because I knew my drawing was shit.

>>1284372

ahh. so I should have googled it myself. apparently there are strict rules for wet vents (which I think means "shared" vents),

>>1284379
A wet vent is when the pipe shares both draining (in this case the sink) and ventilation (the shitter drain). i.e. water flows down it sometimes.
All vents do is
1) prevent back pressure from sewer gas
2) speed the drain by providing a path for air other than the P trap.

Without a vent, the suction can pull water from the traps or shitter leading to a path for sewer gasses to get into the home.

Speaking of shitters.. Got to replace the flushamawidget. The doohickey broke and I can't get a new watchamcallit so the whole kit and kaboodle has to go.
(fill valve arm broke)

>>1284372

That sounds like a terrible idea

If the water in that little trap under the sink ever dries off, wouldn't gas from rotting shit vent straight into the bathroom itself?

>>1284426
You know the shit doesn't stay in the pipe after you flush right? If water evaporates out any trap sewer gas is going to come out. Doesn't matter where in the system it is.

>>1284429
>You know the shit doesn't stay in the pipe after you flush right?

What if you have a septic tank

>>1284430
If plumbed correctly the shit will make it to the tank in one flush. At which time, it is in the tank and not pipes.

>>1284431
Who the fuck said shit stays in the pipes, anyway? If I'm not mistaken I only made a comment about gas floating into the bathroom via the vent tubes

>>1284430
What's the point of septic tanks and all that shit? Wouldn't it be more simple to just make a big hole and let the shit and everything fall in?

>>1284432
>If the water in that little trap under the sink ever dries off, wouldn't gas from rotting shit vent straight into the bathroom itself?

How would gas from rotting shit vent straight into the bathroom if the shit was not in the pipe? Septic tanks are gas trapped as shown in your picture >>1284430. Any shit gas in them vents out the access covers.

>>1284433
Eventually the hole would fill up.
Septic tanks get pumped easily when they fill up, so it solves that problem

>>1284441
Wouldn't the shit just get eaten up by lifeforms or some shit?

>>1284443

not fast enough for the average american family

>>1284445
>eat shit food pumped with hormones, estrogen and antibiotics
>not even bacteria can process it
>shit turns into stone eventually

>>1284451
>>shit turns into stone eventually

>>1284311
what is more important? that it is functional or that it be up to code?

>>1284311
what state are you in

>>1284426
Nothing of what you're saying makes any sense, lad.

>>1284600
Up to code as it's being inspected