Questions tagged [drain-waste-vent]
A drain waste vent is used to allow drain water to flow freely by permitting air the enter the system, usually through a vent stack or an air admittance valve. Use with the [plumbing] tag
387
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Does this kitchen drain plumbing look correct?
I'm not a plumber by any means, but my kitchen renovation is already very over-budget so figured I'd attempt to connect my sink plumbing myself. I haven't glued this together, it's just dry fitted, ...
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2
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My toilet burps air from the toilet tank inlet, not the trap/waste line
My toilet burps air when flushed. The burp comes right at the beginning of the flush. The air is coming out of the inlet from the toilet tank. The air is NOT coming from from the trap/waste line.
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Have I properly vented my bathroom remodel?
4 years ago I purchased a 30yrs abandoned home and started doing its remodel. The house is 1 level on a concrete slab and all the plumbing was Cast Iron for drains and galvanized pipes for water. I've ...
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Why are p-trap j-bends reversed depending on application?
Whenever I install P-traps under sinks (eg, usually inside a cabinet or the like, but outside of a wall, using threaded fittings), the asymmetrical J-bend has the straight side towards the drain and ...
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2
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Is the DWV Tee in this washer service installed backwards?
This is the rough in in question. On the washer service, for the Oatey Sure Vent, is the DMV Tee installed facing the right direction?
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Bathroom plumbing -Is it right?
My 1940 bathroom plumbing was just replaced and I am questioning whether the set-up is proper. Here is a picture. Long 2” pipe at bottom is for the bathtub/shower, fixture at top left is the toilet ...
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1
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64
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Toilets + sinks leak onto ceiling below; showers do not
Our house has two bathrooms (A and B) upstairs that are back-to-back on the floor plan. Both have showers, sinks, and toilets.
One day recently, when I was in an upstairs bathroom (A), the toilet in ...
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1
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118
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Basement bathroom rough in drain layout
I have broken up the concrete in my basement for a new bathroom. There are drains that have been roughed in by the builder, but the layout won't work for us so I'm going to rearrange.
Hopefully the ...
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1
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Drain cleanout requirements only count horizontal angles?
I've always wondered why drain, waste, vent (DWV) requirements have horizontal angle requirements, but not vertical. What is to prevent me from using a series of 45 degree elbows and exceed 135 ...
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Washer and Dual Basin Plumbing
I recently purchased this house and noticed the plumbing for the washing machine and basin in the basement was partially removed and capped. I’ve been trying to research how I can route the plumbing, ...
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Does a lowered sink drain pipe require a new vent loop?
I needed to replace my dishwasher, and found out that the new one is a bit bigger and does not fit under my counter... There is a 1 1/2" horizontal pipe that passes in front of the wall, under ...
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Plumbing vent odor on rooftop deck
Just bought a place that came with an accessible rooftop and there's a plumbing vent that creates a pretty noticeable odor when near it. Our inspector provided a recommendation to put the vent cap on ...
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How can I clear a clogged drain vent without going on the roof?
I seem to have the classic problem of a clogged vent; flush toilet and shower drain "gasps".
Is there a good alternative to going up on the roof and clearing it from there? What's the ...
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What is the height for the washer box and p-trap? if the finish floor is in the garage 2ft under from bathroom floor. does it work?
Washer machine in the garage is 24" lower than the ff from the bathroom, I'm installing a p-trap 6" from the bathroom finish floor. What is the height of the washer box that needs to be? The ...
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How do I trap and vent this new drain line?
I am re-working my laundry area. Previously, it had only one device connected to the drain line - a single sink, into which the washing machine (and everything else) drained.
Now I would like to add a ...
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3inch vs 4inch PVC drain for a bathroom?
3inch or 4inch PVC for my bathroom?
During a remodel of my bathroom we had the old 4inch cast iron drain (vent was also 4 inches) removed.
It’s just a single bathroom with 1 toilet 1 sink and 1 shower/...
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Can a vent pipe be completely horizontal and level?
I don't know why I am struggling to mind a definitive answer on this. Once a vent pipe is above the flood line of fixtures and goes into the attic, can it run completely level or does it require the ...
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Which specific fittings can be inserted into a 4" SDR-35 floor pipe without cutting the concrete around it?
We're interested in installing a clean-out and drain (separately) into our basement floor pipes installed as such:
4" SDR-35 PVC pipes
inner diameter is 3 15/16", outer diameter is 4 3/16&...
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Branch vent in cold ventilated attic space
We have added a garage with a bedroom and bathroom above it. The bathroom obviously requires ventilation, so I am planning a branch vent from the main stack. The branch will run through the ventilated ...
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How long does a 2 inch schedule 40 PVC pipe need to be to form a close connection between two DWV fittings?
It seems like there should be a table somewhere, but I have not found an answer to this question. Obviously, I could do some trial and error, but I certainly don't want to end up gluing fittings to a ...
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Plumbing config - max trap arm to vent, top plate penetration, existing stack connection
Current Conditions
This is a slab foundation home in California and the kitchen is on the first floor. I am moving a kitchen sink to a new wall. It will be located beneath an existing window. To the ...
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1
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How can I vent plumbing without penetrating the roof or walls?
I have a geodesic dome that needs plumbing. I really do not want to make holes in the side of it for plumbing vent. Is it at all possible to design the venting so it would go outside somehow from ...
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Plumbing Basement Bathroom review
I'm plumbing a basement bathroom. Here's the basic layout: sink, toilet, shower. Will the pictured setup pass code? All vents are 1.5in. and will be taken to the wall. The 60° elbow on the shower will ...
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Alternative method for connecting sink drain with waste pipe directly under?
This seemed so much easier in my head before I started.
The sink drain is just about directly over the waste pipe. I glued this together with two 45s and a 2 to 1 1/2 wye. I need to connect an AAV to ...
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2
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What kind of a test plug to use for DWV inspection
I'm an owner-builder, getting ready for a close-in inspection which includes plugging and testing the DWV system for a new bathroom. I have a standard 3" test ball that I have used as a test plug ...
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2
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280
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Is this layout for plumbing drains to code?
I'm working on a bathroom reno that involves moving plumbing fixtures. Is my proposed drain layout up to code? I'm in Virginia, so this is the 2018 Virginia Plumbing Code, based on the 2018 IPC.
My ...
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134
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Can a plumbing vent pipe be ran between roof rafters?
I live in a cape cod style home, which has knee wall attics. Air from these spaces travels from the soffit vents, between the rafters, into the second floor attic space, then out the ridge vent. I ...
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Does this bathroom underslab plumbing plan meet code?
Does this layout look like it would pass inspection in a basement under slab?
3" from sink to sewage pump to act as a "wet vent".
3" to toilet.
2" to shower with a 2"
The ...
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482
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How can I wet vent this basement bathroom?
I am roughing in my basement bathroom and I am planning the dwv system right now. I am having trouble understanding how I should be tying in the wet-vent to meet code (Wisconsin) and hoping someone ...
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May a single sink be safely drained through the vent pipe on a sewage ejector pump? [closed]
I have a new bar sink in my basement. The only remaining jobs are to tie the pex lines into the main water lines and to connect the sink drain to the sewage pump. The part that has me a bit troubled ...
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0
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fixing and combining drains in duplex
I recently bought a home in need of repair. It's a 2 unit property.
The kitchens were both draining into a broken tee that was causing some water damage. It is currently a mess of poorly glued PVC + ...
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Kitchen sink draining slowly but drains fine with cleanout open
The kitchen sink is draining slowly after the water runs for 10-15 seconds. I've stuck a snake down the cleanout and nothing is there. However, if I leave the cleanout cover off (which is just under ...
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2
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Can I use DWV Schedule 40 as a short protective sleeve for wiring?
I had to break a hole through a 2-layer thick brick wall to run drain pipe for some new plumbing. This is the original foundation wall of the house, and I broke through into inside space underneath an ...
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Wet venting shower
I know this comes up fairly often, but I wanted to check nonetheless.
I am roughing in a new shower and lav setup. The lav and shower both feed into a 2" sani tee. The lav has a 1-1/2" vent ...
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1
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Do I need to remediate the existing drain waste vent system in my bathroom?
I’m refurbishing my master bathroom, and during demolition I noticed some potentially incorrect plumbing as part of the DWV system. I’ve attached a rough drawing of the DWV layout.
This bathroom was ...
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How best to brig old Pex water lines up to code / safety
My house in in western New York state. I'm trying to deal with the hack job that the previous owner or flipper did on my house with respect to the water supply lines in the kitchen (hot to sink, cold ...
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2
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Is this a good way to plumb a garage sink and stop existing sewer gas smells?
The builders or previous owner of my house had the water that drains out of the A/C going through a 1" pipe that was simply sitting inside a 2" pipe (cut just 2" above the slab). A ...
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0
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Replacing a terracotta drain pipe underneath the floor
I started to trench to rough in a bathroom in the basement with 2" concrete floor and although the vertical stack is cast iron, underneath the basement floor I discovered the below the CI ...
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0
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Plumbing drain detour around steel beam
During a remodel we removed a 1st floor load-bearing wall that included a drain stack serving our laundry room on the 2nd floor. A steel beam was added in the ceiling above the removed wall to handle ...
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Do we need an air vent pipe for percolation (septic) tank?
I'm going to set up water percolation tank( made of cement rings ) for filtered septic water from septic tank.
Is it necessary to have air vent pipe? but it could cause some foul smell.
Would it be a ...
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What is meant by plumbing connections at "different levels"?
I'm reading the Indiana plumbing code, and section P3107.3 says:
P3107.3 Connection at Different Levels
Where the fixture drains connect at different levels, the vent shall connect as a vertical ...
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Can I Reconfigure My Vent Pipe As Suggested In This Rendering?
I'm moving a wall back a few feet, but when I opened up the wall, I found a pipe going horizontally about 16 inches from the floor, connected to my 3" drain pipe coming from the toilet upstairs, ...
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Plumbing 2018 Uniform Plumbing Code - Need advice on adding a kitchen and dishwasher drain to laundry and clother washer drain
Context: Located in California. Doing an addition and moving the kitchen. The kitchen sink and dishwasher drain into an existing line in the garage that has a laundry sink and a clothes washer. Need ...
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2
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Collar between shower drain and p-trap?
I am renovating a small bathroom, including a shower. I am needing to replace the shower drain assembly, but it is a very tight area to do much work in, with no access from underneath. The current ...
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1
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How should I run drain line from water softner to sewer cleanout -- located outside?
I need to run a drain line from a water softner to a sewer cleanout. The water softner and cleanout are located outside and right next to each other. The builder designed it so a water softner could ...
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1
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Venting to above bathroom sink and proper angles
Background - I have a Saniflo Sanicompact toilet in my basement which is self contained and doesn't need to be vented. There is a bathroom sink that drains into it. Saniflow folks said that the sink ...
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Is this air admittance valve too small, broken, or in the wrong place?
This question is a follow-up to my earlier one about a sewer gas issue in my house.
Since posting, and with the help of some of the comments, I've isolated what I believe is the problem: When the ...
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1
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Should I change cast iron drain stack? Galvanized Drains too? [closed]
Currently renovating 2 bathrooms that are above each other and the full plumbing stack is exposed. The house is from the 1950's and has a cast iron drain stack and connects to the bathtubs and sink ...
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2
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Sewer gas smell in plumbing chase in old house
Over the last several weeks we've noticed a sewer gas smell in our upstairs bathroom at night when we run a whole house exhaust fan in the bathroom window. I found that in the basement where the ...
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Can I run 2 separate stacks for each group?
I am wanting to run 2 separate stacks. One for second floor bathroom and one for first floor bathroom. Both stacks will tie in together in the basement where the main line runs around the house then ...
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