How's this DWV?

orbea1 · Jan 23, 2008

Looking for input on my DWV for 3 lav's.
Planning on everything being 2 inch cpvc. Assume 1/4 slope for the horizontal drain.
Questions:
1. The 90 elbow will be in a stud wall. Will that work?
2. Do I even need the vent for the double lav?

Thanks,
Amy

Redwood · Jan 23, 2008

Close but no cigar! On the 2 closest to the verticle drop you have constructed an s-trap. Review your use of horizintal sani-tees.

Sponsor · 2022-01-29T12:20:58-0800

Dunbar Plumbing · Jan 23, 2008

The furthest fixture on the drawing is fine only if that vent is 42" up before it goes horizontal.

The two lavs need to be vented off tees, combined on the vents and go horizontal as one and on up. That involves 42" or higher as well.

Jimbo · Jan 24, 2008

All the vents must be 42" above the floor before they go horizontal.

The fixture drains must connect to the main with a wye and 45, not the santee shown.

orbea1 · Jan 24, 2008

OK, let's try this again. SLightly different Design

Horizontal vents will be at least 42" above floor or 6" above flood level of the lav.

Is the 90 Ell in the wall going to be OK?

Cwhyu2 · Jan 24, 2008

Looks good to me.Eccept showervent should same hight as lav vent.

orbea1 · Jan 24, 2008

Thanks. That is actually a third lavatory. But I will make all the vents the same height.

Cwhyu2 · Jan 24, 2008

Your welcome . thougt was a shower pipe it like the other two good to go.

ltnicks · Jan 24, 2008

the 90's will work in this scenario, the drawings look good, only the numbers for pitch, height, minimum, and maximum are left out.

Lakee911 · Jan 28, 2008

I see some offset joints. Might get a clog there

How's this DWV?

orbea1

New Member

Redwood

Master Plumber

Sponsor

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Dunbar Plumbing

Master Plumber

Jimbo

Plumber

orbea1

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Cwhyu2

Consultant

orbea1

New Member

Cwhyu2

Consultant

ltnicks

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Lakee911

I&C Engineer (mostly WWTP)

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