New Construction Help

[Kenny Mapes]

Can someone please point me in the right direction with my new construction project.
I consider myself an advanced DIY but never designed an DWV system from the ground up
The Master bath

Do I have enough venting?
The developed length of the lav arm is too long for 1.5" so I increased it to 2" is this correct?
Can the vertical stack that handles the washer and bathroom sink (4 DFU) be a vent if it is 2" ?
Is it better to use a 45 and a 22.5 or one 60 degree bend for the toilet?
Are cleanouts required and where? This is slab on grade.

The guest bath is much simpler
Anything stand out as wrong?
I don't know if the kitchen sink and dishwasher are 2 or 4 DFU florida code below

 

[Stuff]

You have several issues. Horizontal dry vents. Sharing wet vent outside bathroom group.
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County

 

[Sponsor]

 

[Kenny Mapes]

You have several issues. Horizontal dry vents. Sharing wet vent outside bathroom group.
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County

I know it doesn't look it but the vent from the bathtub and shower slope 1/4" per foot up to the vent that goes out the roof . Minimum 12" above the overflow of the highest attached fixture.
Is that not correct?
Are you referring to the sharing of the bathroom wet vents with the kitchen sink and clothes washer?

 

[Stuff]

If a pipe has less than 45º of slope it is considered horizontal. Dry vent (water doesn't normally flow through them) needs to be 6" above flood level of fixture before it goes horizontal. That keeps water and gunk out of it when drain clogs/backs up.
Yes, sharing wet vents with kitchen sink and/or clothes washer is not normally allowed.

 

[Terry]

Bathroom groups only.
The washer should come in downstream of all of that and be vented on it's own.
The toilet can be wet vented by a lav, not a washer.
The shower or tub can be wet vented by a lav too, assuming the wet vented portions are at least 2".

 

[Kenny Mapes]

Bathroom groups only.
The washer should come in downstream of all of that and be vented on it's own.
The toilet can be wet vented by a lav, not a washer.
The shower or tub can be wet vented by a lav too, assuming the wet vented portions are at least 2".

I reworked it can the washer come into it like this? or is it required to be completely outside the bathroom group?
The trap arm on the bathtub is less than (<) 5' and the shower is more than (>) 4"
Toilet arm < 6'
I just learned 2 - 2" vents were not enough to vent this by area. So I went with a 3"

 

[Stuff]

In the last drawing the washer is still providing a wet vent for the toilet.
Bathtub vent has horizontal section below flood level. Some say OK but still not compliant.

 

[Terry]

Why won't you consider bringing in the washer downstream of the bathroom group? It's what the plumbing inspector will want.

The shower arm can be up to five feet long. You should be able to wet vent that with a lav and keep it vertical on the venting.

Just sitting here wondering.

 

[Kenny Mapes]

I brought the washer and kitchen sink in downstream of the bathroom groups and got rid of the below flood line horizontal vent
Master Bath

Master Angle 2 to better show washer routing

Guest Bath

Wet vent on left for bathroom kitchen vent on right
If I use low flow toilets is it better to use 1/8" slope on the 3" pipe? or standard 1/4"?
Do I need clean outs?
And in response to the inquisitive cat Homer came to mind

 

[FullySprinklered]

Why won't you consider bringing in the washer downstream of the bathroom group? It's what the plumbing inspector will want.

The shower arm can be up to five feet long. You should be able to wet vent that with a lav and keep it vertical on the venting.

Just sitting here wondering.

 

[Terry]

I like 1/4" per foot grade. Anything less and you need an okay from the inspector.
It looks like you're good to go now. Even the cat likes it.

 

[FullySprinklered]

Funny cat insert. Almost peed in my pants. We have 5 cats. Yeah, the washer is a whole new deal, nowdays. You might want to ask yourself if you want to see soap bubbles boiling out from between your legs while you're perusing the Sears catalog on the throne.