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Bad venting system and possibly an untrapped, or dry trap on the shower's drain. Does this envolve a bathroom addition? sounds like something is improperly vented...or your traps siphone due to improper distance between the elbow and downpipe
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Bad vent or particle stoppage
Can the drains for a shower and sink come before the drain for the toilet Example the sink and shower then comes toilet then enters main stack?
In my experience I've seen this type of scenario in older buildings. Usually the sink will tie into the stack in the wall while the shower generaly connects in below the toile…t also known as the closet bend. In alot of older houses and apartment complexs they have tied multiple drains together in a smaller pipe before going to a larger one. For example the lav with the tub, the kitchen sink with a tub, or all three together.
Can the drain for your shower an sink enter into the waste line before a toilet Example sink then shower then toilet?
Yes but you will need a 4" pipe (3" in some codes) to pick up the waste line for example Shower 2" line then a 2" x 11/2" tee for the basin and then 4" fo…r the toilet waste You cannot decrease a waste line
Because of subtle factors such as the way the water was moving when you hit the drain, (Neutons Law of motion) or if the faucet is slightly off center thus causing the s…pin by the direction the water enters the sink. It has nothing to do with the effects of the spinning earth. This is a total myth. Bad Meteorology: The water in a sink (or toilet) rotates one way as it drains in the northern hemisphere and the other way in the southern hemisphere. Called the Coriolis Effect, it is caused by the rotation of the Earth. This is totally false and has even been taught in school. Never the less it is false. It is easy to disprove, by simply noticing the rotation of the water in many sinks in your own location. You will see them rotate in both directions. A toilet is different, because it is designed to induce a spinning of the water. This is designed into the toilet by the direction the water flows out of the rim. The direction induces spin and nothing more.
Sorry but the original question can not be answered here, as you need to understand plumbing codes and in the end you must follow local codes. Same as this question, how to …plumbing kitchen. There is too much involved to explain the process. I would suggest getting a book on plumbing to accomplish this task.
When piping in a bathroom with sink drain toilet and shower and the vent is located under the sink do you pipe in the vent with the sink drain?
If the vent pipe is below the flood level of a fixture you just defeated the purpose of the vent entirely
This can be caused either by an incorrect installation and is due to incorrect venting, or you may have a blockage in your mail sewer line
see that vent is downstream from trap
Why has the water from bath sink fill toilet but toilet has no pressure to flush properly water drains out but does not flush?
Up along the rim of the toilet there are little holes that pour the water out when the toilet is flushed. Check the holes, they get clogged from build up over the years... Use… a paper clip to clean them out.... A dirty job but could save you some $ replacing a toilet. You can check to see if that's the problem by filling a bucket with water and pouring it into the toilet. If it "flushes" correctly then it is not a drain line problem and is a problem with the water getting from the reservoir fast enough... that is likely the holes are clogged or you need new reservoir components.
We have a leak in our plumbing whenever you run the dishwasher washing machine shower tub or sink water comes up the drain from everything and out the bottom of the commode what do we do?
The main line has to be clogged or collapsed. Under the toilet is just the easiest place for it to go. Have a plumber run an auger through the line. If you have a septic tank …instead of city sewer than possibly the tank is full and needs to be pumped out.
Any ideas on why the water flow on your half bath pedestal sink stopped suddenly when the toilet and all other home plumbing works fine?
Is it against an outside wall and possibly frozen? Screen in the spout plugged?
The tub and toilet connect to the same drain. There is not enough venting or how it is routed causes the tub to pull on the toilet to get venting causing a suction that lowers… the water level or may cause it to flush.
The drain from the toilet to the main drain is plugged and the branch to the shower is not. If the main floor toilet flushes, it is between the two toilets and not between the… house and the sewer.
Could be several reasons. -Poor original/incorrect original plumbing waste line installation. -If only started recently, it is more likely the drain line is partially clog…ged and needs to be cleaned or the vent line is partially obstructed and needs to be cleaned.
You can use an AAV for each of these. This prevents having to cut the roof.