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The original Backrooms image posted on 4chan, of a HobbyTown under renovation.. The Backrooms are a fictional location originating from a 2019 4chan thread. One of the best known examples of the liminal space aesthetic, the Backrooms are usually portrayed as an impossibly large extradimensional expanse of empty rooms, accessed by exiting ("no-clipping out of") reality.
Suddenly a humanoid figure darts towards him, and he barely escapes through a crawlspace. After this, he travels through strange tunnels with warped stop signs and another red-lit city, eventually coming across a house in the middle of a room. Inside, he hears a man speaking on a phone. He explains that he is trapped in the Backrooms and needs ...
– maybe note that r/backrooms was created in response to and specifically for the Backrooms. The sentence starting "Happy Mag noted in particular two other levels" is cited to two sources. "Wikis hosted on FANDOM" – change to "Wikis hosted on Fandom" as its official name (not stylisation). "dedicated to the Backrooms lore was established."
A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.
Conversely, the obvert level is the highest interior level, and can be considered the "ceiling" level, being the highest level of that sewer. The bottom of the sewer is called the invert from a general resemblance in construction to an "inverted" arch. [2] An inverted arch is a rounded structure with its crown facing in the downward position.
A sanitary sewer is an underground pipe or tunnel system for transporting sewage from houses and commercial buildings (but not stormwater) to a sewage treatment plant or disposal. Sanitary sewers are a type of gravity sewer and are part of an overall system called a "sewage system" or sewerage .
There is no sewer tariff in Kenya, so that properties connected to the sewer network receive this service for free, although sewerage and wastewater treatment is at least as expensive as drinking water supply. In 2013 a study commissioned by the regulator recommended the introduction of a 5% sewerage levy as a surcharge on the water bill. [73]
Effluent sewer systems are a much less common sewage disposal method than gravity sewer systems that use gravity, as well as pumping where needed, to send raw sewage and other wastewater straight from consumers to a sewage treatment plant. There are two main types of gravity sewers, sanitary and combined. Sanitary sewers only treat the ...