4 ms·

> I see no mention of p-traps [1]. How exactly are these fumes getting into places when there's essentially an airlock in every drain connection? Well they are

> I see no mention of p-traps [1]. How exactly are these fumes getting into places when there's essentially an airlock in every drain connection? Well they are doing this because the underground piping is presumbly cracked and/or porous; this would enable fumes from the process to leech into buildings through the pipe walls. We are only protected from sewer gases if the entire system is air tight. It is also possible that her building had some issues with its plumbing; for instance I have seen fitures removed either during renovation or even on a permanant basis that were not properly capped off--while there would be some constant leakage of sewer gas it is really not dangerous (or even that noxious) in low concentrations; the chemicals used in the lining process however might be.

Spooky23 7y ago
This isn't in the building, it's way that municipal utilities retrofit pipes in the street that are leaking. If they catch the leak before it collapses, they are able to inject this sleeve and basically put a plastic cast inside the pipe. They did it on my block when I was telecommuting from my front porch. The smell comes from the excavation holes. It's loud process and they use high pressure air to do it. It smelled like somebody stained a deck, and lasted about a half hour. There was some residual smell that mostly went away after they covered the hole. You wouldn't know it had happened a few hours later. If you've ever dealt with the public with stuff, people freak out about anything smelly or any visible involving radio.
- RaceWon 7y ago
  > This isn't in the building, it's The building drainage system in many areas is not "protected" by a house trap. Many municipalities require a backwater water valve which is essentially a check valve with a mechanical moving part. I can easily envision (and I have held a Master Plumbers License) this failing. Furthermore once you trench to bring sewer, and water into a building (these services while in a manner of speaking are kept separate they often share a common or very nearby trench) it's very easy to not backfill properly thereby also allowing vapors to enter a structure in some instances. It depends: did they use dynamite to blast for the foundation or to bring in these services? There are all kinds of variables that could allow trench to building fumes. I agree people do freak involving odors, but on the other hand different people have different actual physical tolorances to chemicals.
moftz 7y ago
There is a water fountain in a neglected corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific stench to inhale right when you are about to drink some water.
- RaceWon 7y ago
  > There is a water fountain in a corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific stench to inhale right when you are about to drink some water. Yes, the trap seal was lost to evaporation (assuming it's properly vented). People I know at times ask me why their basement shower (most often) smells--same thing; no trap seal due to evaportion from lack of use. And Yes, this is another way her building might have taken on fumes... many variables; heck it might have been sucked in from the HVAC system, and not have anything to due with the plumbing.

Spooky23 7y ago

This isn't in the building, it's way that municipal utilities retrofit pipes in the street that are leaking. If they catch the leak before it collapses, they are able to inject this sleeve and basically put a plastic cast inside the pipe. They did it on my block when I was telecommuting from my front porch. The smell comes from the excavation holes. It's loud process and they use high pressure air to do it. It smelled like somebody stained a deck, and lasted about a half hour. There was some residual smell that mostly went away after they covered the hole. You wouldn't know it had happened a few hours later. If you've ever dealt with the public with stuff, people freak out about anything smelly or any visible involving radio.

RaceWon 7y ago
> This isn't in the building, it's The building drainage system in many areas is not "protected" by a house trap. Many municipalities require a backwater water valve which is essentially a check valve with a mechanical moving part. I can easily envision (and I have held a Master Plumbers License) this failing. Furthermore once you trench to bring sewer, and water into a building (these services while in a manner of speaking are kept separate they often share a common or very nearby trench) it's very easy to not backfill properly thereby also allowing vapors to enter a structure in some instances. It depends: did they use dynamite to blast for the foundation or to bring in these services? There are all kinds of variables that could allow trench to building fumes. I agree people do freak involving odors, but on the other hand different people have different actual physical tolorances to chemicals.

moftz 7y ago

There is a water fountain in a neglected corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific stench to inhale right when you are about to drink some water.

RaceWon 7y ago
> There is a water fountain in a corner of my building at work that blows sewer gasses in your face if it hasn't been used in awhile. It's the most horrific stench to inhale right when you are about to drink some water. Yes, the trap seal was lost to evaporation (assuming it's properly vented). People I know at times ask me why their basement shower (most often) smells--same thing; no trap seal due to evaportion from lack of use. And Yes, this is another way her building might have taken on fumes... many variables; heck it might have been sucked in from the HVAC system, and not have anything to due with the plumbing.