Drain waste vent system

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Bathtub Overflow Works Only After Overflowing Tub

I have a strange problem with a new acrylic tub with a narrow slit overflow line built into the tub. Both the drain and overflow line appear to be clear and the vent stack checks out as well. I'm ...
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2answers
883 views

What sizes of DWV pipe are commonly used for (very) small residential homes?

One of the DIY projects I sometimes contemplate is replacing the ~45 year old galvanized steel drain pipe in my house with PVC DWV pipe and fittings. There is at least one slow, dipping leak I ...
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4answers
7k views

Can a plumbing vent go “up” and then back “down” to the connection with the vent stack?

I am changing the location of all the fixtures in my bathroom. This move will put the toilet and sink on the opposite wall from the stack. I was originally planning on running a vent up the wall ...
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1answer
239 views

how do I repair broken pipe under foundation

For a home built in 1965, with broken pipe under foundation, what is status of inserting a stent, perhaps under visualization?
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2answers
1k views

Is a P-trap required for a shower drain?

I take care of unwanted and abused pets, and occasionally I have to bathe them in a bathtub. Sometimes they go poop and it breaks up in the water so it cannot be scooped out. When this happens, I have ...
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1answer
655 views

Rerouting a plumbing air vent pipe

We're taking down a section of the wall between our kitchen and living room and we want to drop the 'bar height' down level with the sink. Unfortunately, the bulk of the section we're removing has ...
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9answers
56k views

How can I prevent or remedy “bio slime” accumulation in a sink drain?

The drain in the sink which we use for mouthwash consistently gets clogged by a very repugnant slime. I've tried all the common drain unclogging products (Drano, Liquid Plumber) as well as some ...
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4answers
3k views

How can I install a washing machine in the kitchen?

i am looking to install only a washing machine (no drier) in my condo under the counter in the kitchen. my brother tried to install it for me but some plumbers advised him not to just hook it up ...
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4answers
13k views

Can I use a PVC cleanout plug in a Cast Iron Cleanout?

There's a cleanout plug on this pipe that I simply can't get loose. I've tried liquid wrench, PB blaster, heating up the area with a torch, everything I can think of. All that's really left is to go ...
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1answer
6k views

How long can a sink drain be?

I've read that the rule is 1/4" per foot of drain line. From what I know, the rule is based on the height of the P-trap to where you tie in. What part of the P-trap do you measure from? How low can ...
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1answer
262 views

Bubble of air out of toilet when flushed

When I flush the toilet in the basement there is a big air bubble that comes up the toilet and it then drains slow; if anything else is running it almost overflows. The basement toilet was working ...
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3answers
10k views

Why is sewage backing up from this outdoor pipe?

I just recently moved into my first house this morning and when I went outside I noticed this: What happened? What should I do? I have no idea what that pipe even is. I don't believe there is a ...
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2answers
6k views

What would cause a kitchen sink to drain very slowly?

I snaked my kitchen sink drain to the end of my 20' snake so I know there is no clog for 20'. When I run water into the sink it starts to fill up immediately - not enough time to fill 20' of pipe. ...
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0answers
59 views

Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does?

Why does the Hartell Reservoir style pump require no venting, while the Little Giant Drainosaur does? See links below for more info on pumps Hartell Pump Little Giant I am having a hard time ...
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1answer
18k views

Persistent sewage smell coming from basement drain

I've recently purchased a house and am now learning all the ins and outs of home maintenance. This summer, I've noticed that I have a very smelly basement drain. Particularly, it smells like sewage. ...
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2answers
1k views

How can I replace this unusual kitchen sink drain pipe?

I'm trying to replace a broken 1-1/2 inch L-shaped brass pipe under my kitchen sink, as in this picture: At one end, it's connected to the sink drain, which if I'm understanding the terminology ...
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2answers
10k views

New Vanity: Sink Won't Drain Completely

My wife and I just replaced the vanity in our bathroom. To fit the new sink, we had to cut some new PVC. Here's a picture. All the plumbing works, without leaks, except that it will not drain ...
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1answer
115 views

How can I attach a new drain to a drain pipe that's fallen away from the tub?

Hello everyone, Noobie here and I think I shot myself in the foot! I wanted to replace the old drain with a new one so my almost 2 year can have bubble baths. I was able to remove the old drain ...
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2answers
2k views

What could cause a tubs drain to gurgle when the toilet is flushed?

One day after I used a bacterial enzyme degreaser/ septic treatment to clear slow draining bathtub drains I can hear gurgling in my master bath tub drain when someone flushes the toilet in the other ...
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0answers
123 views

Would you trust this PVC drain joint?

This is a joint for a 2" elbow underneath a unit-shower (in Japan.) The elbow is a special type which is clear, and using a blue glue shows the glue line so you can insure you have a good joint. An ...
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0answers
534 views

How can I connect dishwasher waste pipe to sink waste pipe?

I moved in recently in our new home and when we put the dishwasher on a gush of water appeared on the floor. I turned off the dishwasher and took a look under the sink to find the waste pipe was ...
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1answer
105 views

Should I cap one vent in a two vent stack?

I have relocated some fixtures in our house, and now have two 3" vent stacks in the same drainage route that leads to our septic system. I'm thinking that this may be a bad idea, . . . that it may ...
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5answers
39k views

What is the best quick repair for a drain pipe?

In particular, a cast iron drain pipe. It doesn't have to be pretty, but needs to be effective and should last until it can be fixed properly.
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2answers
680 views

Where should the main stack vent go?

Where does my primary stack vent go? Does it have to be at the end of the run? I have a pretty simple plumbing system. From the highest point to where the drain enters the house (lowest) I have Tub, ...
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3answers
58k views

When does an under the sink P-Trap assembly need venting?

In the realm of second homeowner woes, I had a P-Trap assembly under the bathroom sink. It was a strait connection to the pipe connected to the main sewer line. (least I think that was the case) ...
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2answers
315 views

Toilet, sink and shower blocked

I live in a block of flats in China. I had a lot of friends over a couple of days ago and since the toilet, sink and shower are all blocked. The water on all those items does go down, but really, ...
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1answer
980 views

How do I connect a new trap to an old cast iron pipe?

I replaced a lavatory in the bathroom with a new faucet and new trap, but the old 1-1/4 trap is connected to a cast iron pipe with led through the wall. I cut the old trap out, and I used a 1-1/4 ...
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4answers
28k views

Sink tailpiece doesn't line up with trap

After installing a new bathroom sink, the drain tailpiece doesn't line up with the trap coming out of the wall. I've seen flexible accordion hoses for this, but I think that violates code ...
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3answers
882 views

Do I need vents to devices in the primary waste line?

Assuming the system below (solid is waste, dotted is vent). Do I need vents for the Sink C, Toilet C and Toilet B? They are connected to the primary waste line which is vented at the end of it. Sink ...
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1answer
345 views

Sanitary plumbing elbows

As part of a basement remodel, some of the old (1940s) plumbing is being changed around. In order to move some of the waste drain from the side bathroom toilet, there were some 90 degree elbows put ...
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2answers
6k views

What can I do if drain alignment doesn't allow enough space for p-trap?

I'm remodeling my bathroom. The sink drainage come up from the floor. The alignment between that and the drain coming from the sink doesn't have enough space for a p-trap to be installed so it just ...
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3answers
4k views

Fix lead joint between cast iron and galvanized steel plumbing pipes?

I took out my bathtub to replace a rotted wall behind it, and the drain pipe fell out. (Yes, I unscrewed the drain fitting before removing the tub.) The joint under the concrete slab, where the ...
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3answers
4k views

How do I patch an in-ground ceramic drain pipe?

So tonight I was digging a post hole for a new fence tonight. And as I'm digging the hole I hear a hollow thump, crack. Behold: This pipe is a downspout drain pipe that runs from the front of my ...
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1answer
106 views

Change direction between trap and vent

By code, I have 8 feet distance from a 2 inches trap to vent. These 8 feet must be straight? Can I change direction sideways or horizontal (sloped) to vertical and then horizontal again?
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1answer
137 views

Why is my toilet backing up and bubbling after replacing an ejector pump?

About two weeks ago my sewage ejector pump died and had a massive overflow in the basement. I replaced the pump but I am now noticing that the toilet backs up. I am also noticing that when I take a ...
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1answer
593 views

Can I move this drain line from the wall to the floor?

Here is my kitchen sink drain configuration: (The horizontal run after the trap is actually pitched correctly, not as drawn.) The portions inside the wall are galvanized steel pipe. Under the sink, ...
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3answers
13k views

Do I need a separate vent stack for my kitchen sink?

The drain line from my kitchen sink drops down through the basement, into the basement floor (Concrete), and I assume under the floor to the main sewer line. The sink tends to drain slowly. Should I ...
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1answer
1k views

Can vent plumbing be behind a double wye?

I am trying to figure out how to lay out my basement plumbing, and I wanted to use a double wye to connect my shower, toilet, and sink to the existing waste system in the house. My question is, am I ...
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2answers
180 views

Vent below window

I have a waste vent terminal that will be 2 m below a window (2 storey house). Can I leave this terminal there, or should I extend it above the windows (adding 3.5 m to it and having an ugly pipe on ...
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2answers
343 views

Graywater overflow plumbing… which design to choose?

I'm working on replumbing my utility room and I'm adding a graywater system. Local codes are remarkably permissive but require an overflow to the sewer/septic system in case of graywater blockage or ...
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1answer
1k views

Sound proofing a waste pipe

In our (badly designed) flat the upstairs waste pipes run straight through our bedrooms. It's a shame as the outer corridor is right next to our bedroom, so it would have been sensible to put it in ...
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1answer
1k views

Basement Bathroom Rough-In Configuration

I'm investigating if I can use an existing basement bathroom rough-in as is. To date, everyone I've asked has said the concrete needs to be broken up and the plumbing re-arranged. I think the tub ...
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1answer
414 views

Prevent future holes in PVC vent pipe in walls

Is there any practice or products out there to help protect a PVC pipe where someone might drill into the wall in the future for hanging stuff or something. I'm considering just using metal piping for ...
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2answers
4k views

Does my vented septic tank even require traps and vents near the actual fixture connections?

My home has a septic system with a vented lid to let the sewer gasses escape from the tank itself. As a result, it seems like far less gas (if any) would travel up the waste plumbing and exit through ...
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2answers
435 views

Is it OK to have the kitchen drain and roof vent on the same line?

Can the kitchen drain wet vent be on the same vertical pipe as the air vent going out the 2" roof? I also have a sanitary tee attached on the top that attaches the vent for the washing machine. Just ...
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1answer
772 views

Why do I hear water running in my bedroom wall when faucets are on or when toilets are flushed?

I've lived in my house for almost 9 years. I recently had my septic tank emptied. I've noticed that about a few weeks after emptying the tank that whenever I flush or when the water is running in the ...
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8answers
44k views

What can I do about my drains constantly getting blocked?

The one thing I have tried to do about this is use those foaming and non-foaming drain unblockers regularly. That has just been money down the drain, pardon the pun. I suspect that unblockers only ...
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2answers
1k views

Can I share a stack between two toilets?

I want to put another toilet/bathroom off my bedroom. The main bathroom is next door to the cupboard I want to turn into my new bathroom. What run do I need for the second toilet? The main stack is ...
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3answers
11k views

Decipher my bathroom rough in

Can someone help me decipher this picture? When I had the house built, the builder roughed in a bathroom for later use. The pipes in this picture are A 2" pipe, possible a vent with a T connector ...
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3answers
909 views

Question about my sewer stack situation

I just purchased my first home with limited knowledge on many things. At one point my house was outside city limits (using a well and septic) and has since been annexed into the city and brought onto ...