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
363
questions
0
votes
1
answer
42
views
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 ...
- 3,484
1
vote
2
answers
111
views
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 ...
- 121
0
votes
1
answer
74
views
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 ...
- 2,145
1
vote
1
answer
150
views
May a single sink be safely drained through the vent pipe on a sewage ejector pump?
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 ...
- 131
1
vote
0
answers
35
views
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 + ...
- 11
5
votes
2
answers
97
views
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 ...
- 63
1
vote
2
answers
110
views
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 ...
- 37.3k
0
votes
1
answer
70
views
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 ...
- 241
4
votes
1
answer
94
views
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 ...
- 43
0
votes
1
answer
95
views
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 ...
- 3
4
votes
2
answers
90
views
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 ...
- 167
2
votes
0
answers
33
views
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 ...
- 492
2
votes
0
answers
71
views
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 ...
- 160
1
vote
2
answers
149
views
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 ...
- 131
4
votes
1
answer
68
views
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 ...
- 37.3k
0
votes
1
answer
61
views
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, ...
- 111
1
vote
0
answers
36
views
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 ...
- 595
-1
votes
2
answers
91
views
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 ...
- 25
1
vote
1
answer
62
views
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 ...
- 19
2
votes
1
answer
93
views
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 ...
- 1,025
0
votes
0
answers
98
views
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 ...
- 1,018
1
vote
1
answer
178
views
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 ...
- 167
3
votes
2
answers
718
views
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 ...
- 1,018
-1
votes
1
answer
152
views
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 ...
- 1
1
vote
2
answers
106
views
Removing Glued-On Stub Out
I am replacing my two-bin sink with a one-bin sink. As a result, the garbage disposal is now resting on the tip/edge of this angle stub out that is glued on to the waste drain.
I was good up to this ...
- 31
2
votes
1
answer
156
views
Two P-Traps on Single Vent?
I am replacing the old washing machine drain stand pipe, p-trap and clean-out. I am adding a utility sink to the garage laundry area washing machine vent stack.
Am I creating a possible issue by ...
- 441
2
votes
1
answer
114
views
Why there is a wye under a pedestal?
Is there a reason why the builder used a wye under the pedestal with one end capped with a mechanical cap.
The P-Trap is located under the floor.
I’m replacing the pedestal with a vanity.
Do I need ...
- 21
2
votes
1
answer
67
views
Can I connect a vent pipe from a defunct waste drain to a different, active waste drain pipe instead?
My goal is to remove as much defunct plumbing as possible.
My scenario is:
Former sink in basement (removed), drains to septic under slab
Current sink in kitchen, drains to septic through long pipes ...
- 103
0
votes
0
answers
27
views
Septic tank TLC (Europe)
We are getting some odors; at least partly from our septic tank. We purchased the house a year ago; and don't have any detailed plumbing schematics. So trying to work out what is currently happening; ...
- 113
-1
votes
1
answer
139
views
1970’s ABS OD Pipe Size is Larger
We have a 1974 condo with some lateral 2” ABS schedule 40 pipe. Strange, but current fittings with hubs do not fit the old pipe. It’s as if the older pipe is just “slightly” larger than the current 2....
- 441
0
votes
0
answers
72
views
Fiberglass Shower Drain Removal
1974 Condo on a post tension concrete slab. This was an original fiberglass shower enclosure. I can’t figure out how to remove this drain.
Any advice is appreciated.
- 441
2
votes
0
answers
1k
views
How far can you move the toilet away from the vent stack in NJ?
I plan on moving the toilet bowl to a different spot in the bathroom, further away from the stack. What is the maximum horizontal distance? Is it 9 feet?
As per New Jersey Plumbing Code 2018, 12.8.4:
...
- 121
0
votes
1
answer
85
views
How High For A Condensate Standpipe?
I have a new Navien NPE-240A2 condensing tankless water heater that I'm installing in an existing small water heater cabinet accessible from the exterior of my house. The current tankless is an older ...
- 101
0
votes
2
answers
102
views
Trap layout for double vanity with existing stack
Installing a double vanity with 4" stack on one side. Typical in-wall double rough-in means drilling two-inch holes in multiple studs across an old exterior wall already hacked up by generations ...
- 25.5k
0
votes
0
answers
79
views
Covering/closing a basement drain, any reversible options?
For a new basement-level room, we have the option of installing a drain or not installing a drain.
We're not sure yet what we want to do with the space. It makes sense to have a drain installed while ...
- 115
0
votes
0
answers
75
views
Ok to use dishwasher connector for A/C condensate line?
Shown is an A/C condensate line from the floor above, that is connected to a cast iron stack via some method that probably isn't play dough but definitely isn't correct. The whole stack is being ...
- 25.5k
0
votes
2
answers
89
views
Washing machine drainage leaking - new appliance
I have a new washing machine (there wasn't one there before as I've recently moved in). When the machine is running the water spouts out particularly through a vertical 'vent' hose leaving a small ...
- 1
4
votes
1
answer
218
views
What is the composition of this 1940s era main drain line?
I have a main drain line running from my 1940s era single family residence in Las Vegas, NV to the city sewer. Given the time period I had assumed it would be cast iron, but when I dug down to it, it ...
- 41
2
votes
1
answer
907
views
Is this elbow coming from toilet a suitable fixture for DWV?
I had new plumbing installed and someone told me the elbow used under my toilet is incorrect. The company says it's fine. I'm trying to determine who is right.
Here is the fitting:
The manufacturer ...
- 241
0
votes
2
answers
859
views
Should PVC DVW landscape pipe be glued?
I'm re-routing a section of 4" landscape drain. "Triple-wall" pipe was initially installed and has been pinched almost completely closed by a nearby tree, so I'm installing Sch 40 DWV ...
- 267
1
vote
1
answer
184
views
Lower the point of drain attachment to a vent and adding a Studor (AAV)
I have a negative pitch in the drain pipe coming out of my sink drain that attaches directly to the vent stack.
The vent stack is mostly inaccessible at the height of the p-trap though inside the sink ...
- 666
2
votes
1
answer
404
views
How do I re-route my main plumbing stack to make room for in-the-wall taps?
We're in the middle of renovating our upstairs bathroom. My lovely and amazing wife has bought two vessel sinks and in-wall mounted faucets. After removing the drywall we have sorrowfully discovered ...
- 355
3
votes
2
answers
520
views
Is there any filter or material that let only water through not dirt
I need a filter or some kind of cloth material which only lets water through and not the dirt this way I can get filtered water and I can soak it through french drain or dry well.
I just couldn't find ...
- 91
0
votes
1
answer
803
views
Can I run a wet vent vertically between two floors?
On each floor I have a tub and a sink back-to-back with a 2x6 wall in between. Can I run a single 2" pipe as a wet vent from below the slab to the two fixtures, then up the wall to the second ...
- 1
3
votes
1
answer
605
views
Will Air Admittance Valves help me? If so, where to place them?
This is my first question so apologies if its not the highest quality. will do better over time.
My primary question is: based on the current plumbing layout, what problems am I likely to experience, ...
- 33
1
vote
0
answers
90
views
connecting p-trap to female galvanized tee
This may be a simple problem, but I'm not so knowledgeable about this section of the drainage system specifics.
So, I have a bathroom sink with PVC trap, and I replaced the popup assembly. The pipes ...
- 367
2
votes
1
answer
492
views
Can a plumbing vent go up a different drain, for some length
My contractor came up with the below idea. Is it OK?
The first floor kitchen drain vent can't exit directly anymore (there's an extra room being built on top). He tells me it can tap into the drain ...
- 1,933
0
votes
0
answers
38
views
Help with new install of small bathroom in basement?
I'm installing a brand new bathroom in my basement! I'm a DIYer, so after lots of learning, I'm looking for some experienced advice with the layout. I've only done remodels, not new installs.
I'm ...
- 11
1
vote
1
answer
89
views
Which of these options is the safest/most efficient method to plumb a kitchen sink drain in an island?
First, I'm going to try and describe the current (original/builder) configuration. It seems more complicated than it needs to be, but perhaps there's a reason or code that is required. This is a ...
- 111
1
vote
0
answers
254
views
Attaching flexible bath drain pipe to dwv pvc pipe
The drain pipe in the image below came with a bathtub I bought. How is it supposed to attach to regular dwv pvc? The inner diameter is about 1.375 inches, although at the two grooves near the end the ...
- 111