All Questions
Tagged with dwv or drain-waste-vent
418 questions
0
votes
1
answer
1k
views
How should I terminate water heater drain pan?
I have a water heater drain pan installed and I'd like to terminate it as close to code as is possible. The pan/water heater is currently in a closet that barely fits the pan. So unfortunately, there ...
- 190
0
votes
0
answers
363
views
Difficulty (drain plumbing wise) in splitting a large bathroom on the second floor into two bathrooms?
We have a large main bathroom and we'd like to split it so we have a small master bath and a smaller main bath. Layout wise, door wise, etc, we think it will fit but we're trying to gauge the ...
- 505
6
votes
2
answers
3k
views
Is my plan for an air admittance valve ok?
I am in the middle of finishing my basement and want to add a sink that will attach to an existing kitchen drain from above. I don't have a way to vent the sink easily unless I use a Air Admittance ...
1
vote
1
answer
20k
views
90 degree turn in horizontal sink drain
I'm doing a kitchen renovation and moving the location of the sink so that the plumbing stub-outs (supply and drain) need to exit the wall one stud-bay over. I'm also replacing the old galvanized pipe ...
- 249
1
vote
1
answer
474
views
Flashing and/or sealing for vent through built-up roof (BUR)?
I'm reconfiguring plumbing and need to poke a new vent through the roof of my Chicago two-flat. It's a built-up roof of tar, felt, etc., with a slight grade. How to finish the roof portion so that ...
- 115
3
votes
2
answers
1k
views
Why aren't vent stacks usually equipped with hats?
On just about every house I've seen here in the west (CA) the vent stacks are just a bare pipe sticking out of the roof. There is no hat on them. I understand that all the vent stack does is vent the ...
- 1,473
3
votes
1
answer
20k
views
Horizontal Drains Can Combine Through Wye Laying Flat, Or Can't They?
QUESTION Can horizontal drains combine through a wye in the horizontal position laying flat on its side and not upright at all, Or Can't They? Then see my sketch: Am I doing this right? - Merry
IPC ...
1
vote
0
answers
208
views
Can I vent a 3 inch ABS sewer line with a 2 inch pipe?
I will be attaching 1-1/2" vent line from 4 different fixtures (shower, tub, 2 sinks) in the unfinished ceiling above bathroom and also if I can still use it as my main soil stack (2 inch) to protrude ...
0
votes
2
answers
7k
views
Condensate drain line freezing. Need an internal solution
I have a residential 16-SEER four-ton air handler/heat pump unit with a built-in humidifier. Both summer AC condensate and winter humidifier over-run feed into a condensate pump which is on the ...
3
votes
2
answers
222
views
How can I route a toilet drain around copper supply lines right below the slab?
I need to move the toilet back about 3" from where it was originally set to get to the standard 12" rough-in distance. I had to cut the concrete slab and dig into the dirt below. I was planning on ...
- 31
2
votes
2
answers
11k
views
Can a toilet vent be upstream?
I am relocating the bathroom door and the toilet vent is right in the middle of the new opening. I want to put the vent in the wall behind the toilet which will be upstream of the toilet. Will this ...
- 2,080
0
votes
2
answers
2k
views
Faint sewer smell in highrise bathroom during high winds in one direction?
I rent an apartment in a highrise, and often smell a faint sewage smell when there are high north-westerly winds with gusts. Following suggestions on a past Stack Exchange posting, I did the simple ...
- 171
3
votes
1
answer
264
views
Flange recommendation needed. Old flange rusted. New floor higher than older pvc pipe lip
I recently removed the tile and a toilet for a bathroom reno to discover that the flange was completely rusted and the tile had been installed directly on the plywood subfloor. I removed the old ...
- 31
12
votes
2
answers
10k
views
Why are loop (Chicago) vents typically built with three elbows?
Loop vents, for use where direct vents aren't feasible (such as in kitchen island cabinets), are typically drawn, built, and described as comprising three elbow fittings--two 45-degree elbows and one ...
- 149k
2
votes
1
answer
487
views
Can I add a wye fitting to this cast-iron drain stack?
I recently leased a warehouse space in which I am trying to add a shower to a current half bath. There is a mini basement right below the bathroom which contains the plumbing.
Attached is a photo of ...
- 23
0
votes
2
answers
15k
views
Will a toilet flange bolt cause a problem if dropped into the drain pipe?
I dropped one of the toilet bolts in the drain hole. It's in the basement and set in concrete. I tried to vacuum it out but couldn't.
How serious is this, will it get flushed down or do I need to ...
- 7,584
2
votes
1
answer
242
views
Modern half-bath copper DWV configuration
First off: I KNOW PVC is fine. I KNOW PVC is cheap. I KNOW PVC is fast. I KNOW PVC is more flexible. I KNOW PVC would still be working [sarcasm] 300 years after I'm dead.
Now that I've sufficiently ...
- 193
1
vote
0
answers
1k
views
Plumbing replacement - Drains, P-traps, and Vents
I'm having a bathroom remodel done that involves replacing the leaky old galvanized steel plumbing with PEX piping. I have zero plumbing experience, but I'm not convinced it's being done properly.
...
- 1,252
-1
votes
2
answers
135
views
How to tell if lightly clogged shower drain has a venting problem?
I have a shower drain that was snaked a few months ago and has started having a very light back up again. After maybe 5 seconds of unenthusiastic plunger work, it clears up just fine. But come back an ...
- 99
1
vote
0
answers
263
views
Are these bends in the tub drain going to be an issue?
Im getting ready to run the drain for my basement bathroom but I'm concerned that I have too many turns in the tub drain. I had to start in the wrong direction in order to pick up a wall for a vent. ...
- 11
1
vote
2
answers
2k
views
Are there any options for connecting into main stack for venting branch below waterline?
Are there any options for connecting into main stack for venting branch below waterline? Could I go up for a few feet with a with a wye join and then come back down? The reason for trying to come up ...
- 65
1
vote
3
answers
6k
views
Is this a proper wet vent?
I have mocked up a bathroom remodel waste line. It is the white pvc in the image. The toilet is 93" away from the stack and is the most downstream fixture. I think I did everything right but I'm still ...
- 11
0
votes
0
answers
463
views
DWV: Dirty arm with a tight bend on the end
This is a mock-up of a vanity drain rough-in on a 2-foot "dirty"/trap arm.
Ideally the screw fitting that accepts the trap will sit as close to the wall as possible.
Is there any reason for this to ...
1
vote
0
answers
2k
views
Should I use a sanitary tee or a wye into a diagonal section of pipe?
I'm installing a temporary drain line for a kitchen sink while a remodel is taking place. The most convenient place for me to tie in the temporary line is into a section of 2" cast iron drain line ...
- 900
0
votes
2
answers
1k
views
How should I seal a drain waste line that I'm no longer using?
The waste line from my kitchen sink is plumbed directly into my side sewer via a dedicated pipe that travels along the exterior of my house before tee-ing into the side sewer line. Apparently this was ...
- 900
0
votes
0
answers
716
views
Fixing Shower Without P-Trap
I have a shower on the first floor that does not have a P-trap. A previous owner did some remodeling and the shower drain pipe is plumbed right into the top of the waste line with a tee. You can see ...
- 652
1
vote
1
answer
219
views
Sewer pipe cleanout
My house was built on a slab in1964 and has a walk out basement. There is a floor drain in my basement, along with a toilet & utility sink. Water from the main floor fixtures is backing up through ...
- 11
4
votes
3
answers
8k
views
Can a vent be started from a wye?
Is it ok to start a vent on a 45 from a wye like on this drawing?
I need to clear the edge of the sink (actually a giant double compartment sink) before I can go up and start horizontal once I clear ...
- 257
3
votes
1
answer
27k
views
What is the correct height of a toilet flange relative to the finished floor?
What are the best practices or other rules such as building code regarding how to set the height of a toilet flange relative to the finished floor height?
Example of the type of flange I am referring ...
- 5,635
1
vote
1
answer
390
views
Help with drain and vent configuration
What to do with this drain situation? The kitchen sink drain shares the galvanized pipe there. Problems have been that the water from the kitchen sink backs up into the bathroom drain and there is ...
- 33
1
vote
2
answers
1k
views
Joining a branch drain line at a 30 degree angle?
In order to bring a sink drain line over to the main drain line, I really need to join it in at a 30 degree angle. 45 degrees puts the wye outside the building. Searching on google for a 30 degree wye ...
- 1,642
1
vote
1
answer
876
views
Can I move a kitchen waste vent? If so what is allowed?
I an adding a large opening between my kitchen and living room just above countertop level, but realized the sink vent is there.
I want to move it ~30" away. See photos. My plan would be to use two ...
- 111
0
votes
0
answers
1k
views
How do you rough in a floor drain (not shower) for a new concrete slab?
I need to install floor drains in a new building that will have a concrete slab floor. The drains need to be a kind that is trapped and vented. There seems to be many options to choose from for floor ...
- 1,642
6
votes
1
answer
46k
views
Tee vs. wye for drainage?
When should I use a tee and when should I use a wye for drainage? Does using a "long sweep" tee alter the situation?
Example (sanitary) tee:
Example wye:
Example long sweep tee:
(Note - a long ...
- 5,635
1
vote
1
answer
217
views
How is a waste drain vent pipe vertical clearance measured?
In my jurisdiction, a waste drain vent pipe must terminate 6" above the roof (or another vertical surface if it's not sloped). Is this typically measured on the ridge side or the eave side? For a 4" ...
- 2,218
2
votes
1
answer
1k
views
Is it acceptable to use multiple PVC couplings when routing a drain through joists?
I'm deciding whether to repair or replace my ancient cast iron DWV plumbing while the walls and ceilings are open.
The 1.5" steel shower/tub drain is currently notched through joists for a run of ...
- 115
1
vote
3
answers
4k
views
Slow drain after tub-to-shower conversion
I recently hired a plumber for a tub-to-shower conversion into a first floor (slab) master bathroom. I had already removed tub and demo'd the walls, so the scope of work involved:
Extending existing ...
- 37
0
votes
1
answer
149
views
is using 2 sch40 45 elbows the same as using a single 1-1/4" DWV elbow
I am hooking up a Saniflow toilet that allows a sink to drain into it. The sink is 1-1/4 and the saniflow is 1-1/4 so I cant use anything but 1-1/4" lines. I cannot find any 1-1/4 DWV elbows locally. ...
- 375
0
votes
1
answer
2k
views
does my toilet have a venting issue?
My toilet is making a slight gurgling noise at the end of the flush. Here is a video of the flush:
https://photos.app.goo.gl/yIcFN14zdgDAAFu43
The toilet is vented via a 2" vent that meets the toilet ...
- 375
0
votes
0
answers
182
views
Can an ABS drain be fitted to a PVC waste pipe riser?
The only shower drain available at my local hardware store is The Wondercap, which looks fine.
However, the (white) plastic is formed with "ABS", and the drain pipe itself is white plastic, which I ...
- 767
3
votes
2
answers
43k
views
How to stop downstairs toilet from bubbling when upstairs toilet is flushed?
I have a newly installed toilet on ground floor of my house. The drain of this ground floor toilet is connected (in the basement) to the drain stack of the toilet in the attic on the 3rd floor. When I ...
- 111
1
vote
1
answer
2k
views
What's causing the sewage smell in my laundry room?
I noticed my laundry room has developed a strong sewage smell over the last two days. I suspect it may have to do with vent blockage, but I ran a garden hose to the vent in the roof last night and had ...
- 15.8k
0
votes
2
answers
3k
views
Is it ok to use AAV with sanitary T or other T
I am wondering if someone can weigh in on the use of sanitary Ts or other types of Ts (non-comboYs) in conjunction with AAVs on small bathroom sinks. If we turn to Table 706.3, it seems clear that a ...
- 375
5
votes
1
answer
343
views
Repairing Damaged Toilet Flange
I've bought an old house, and I've decided to fix a rocking toilet. I found two flange repair kits stacked on top of the original broken toilet flange. When sawing the flange to remove it, I found ...
- 275
2
votes
2
answers
69k
views
DWV fittings: when to use a sweep instead of an elbow
PVC DWV fittings have a 'tight' elbow and a 'sweep' elbow. Is one for vent and the other for drain/waste? In general, is there a handbook that describes these fittings and explains why you would use ...
- 181
0
votes
2
answers
130
views
Can anybody idtentify what this drain vent is for? [closed]
I am trying to identify the reason for a drain vent in an area of my house with no other plumbing. The house only has 1 bathroom and a kitchen sink. The kitchen sink drains into a grease trap and has ...
- 375
1
vote
0
answers
147
views
Where are vents required for bathroom drains?
Here is a diagram of the new drain plumbing we are installing for one and a half new bathrooms.
Where should I locate any required vents on these lines?
I live in Oakland County, MI and it looks they ...
- 13
1
vote
0
answers
161
views
Joist in the way of drain
I'm installing a replacement bathtub. Because a truss joist (3 1/2" wide & running lengthwise in the center of the tub) is in the way of the drain and overflow, I'm left to devise a bend in the ...
- 21
1
vote
0
answers
281
views
Is this drain setup adequately vented?
Pictures are coming after I find new batteries for my mouse.
My basement has two vertical drain pipes. Drain pipe number one comes down directly from my bathroom sink. Near the basement ceiling, a ...
- 209
4
votes
2
answers
9k
views
Can a sink drain into a shower venting pipe?
I'm trying to add a sink next to an existing bathroom. Sink will be probably 3 feet from shower vent pipe. Floor is a concrete slab so all existing drains are underneath. I'd like to minimize busting ...
- 61