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  2. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

  3. Pit latrine - Wikipedia

    en.wikipedia.org/wiki/Pit_latrine

    One includes adding a ventilation pipe from the pit to above the structure. [12] This improves airflow and decreases the smell of the toilet. [12] It also can reduce flies when the top of the pipe is covered with mesh (usually made out of fiberglass). [12] In these types of toilets a lid need not be used to cover the hole in the floor. [12]

  4. Ventilation (architecture) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(architecture)

    For residential buildings, which mostly rely on infiltration for meeting their ventilation needs, a common ventilation rate measure is the air change rate (or air changes per hour): the hourly ventilation rate divided by the volume of the space (I or ACH; units of 1/h). During the winter, ACH may range from 0.50 to 0.41 in a tightly air-sealed ...

  5. Composting toilet - Wikipedia

    en.wikipedia.org/wiki/Composting_toilet

    A composting toilet consists of two elements: a place to sit or squat and a collection/composting unit. [3] The composting unit consists of four main parts: [2] storage or composting chamber; a ventilation unit to ensure that the degradation process in the toilet is predominantly aerobic and to vent odorous gases

  6. Latrine - Wikipedia

    en.wikipedia.org/wiki/Latrine

    A pit latrine is a simple and inexpensive toilet, minimally defined as a hole (pit) in the ground. More sophisticated pit latrines may include a floor plate, or ventilation to reduce odor and fly and mosquito breeding (called ventilated improved pit latrine or "VIP latrine"). [5]

  7. Flush toilet - Wikipedia

    en.wikipedia.org/wiki/Flush_toilet

    A flush toilet (also known as a flushing toilet, water closet (WC); see also toilet names) is a toilet that disposes of human waste (i.e., urine and feces) by collecting it in a bowl and then using the force of water to channel it ("flush" it) through a drainpipe to another location for treatment, either nearby or at a communal facility.

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