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  2. Drain-waste-vent system - Wikipedia

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

    Double trapping is prohibited by plumbing codes due to its susceptibility to clogging. 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 ...

  3. Greywater - Wikipedia

    en.wikipedia.org/wiki/Greywater

    In addition, the California Department of Housing and Community Development has greywater standards and DWR has also proposed dual plumbing design standards. In Arizona, greywater is defined as water with a BOD5 less than 380 mg/L, TSS<430 and the Fats, Oil, and Grease (FOG) content should be less than 75 mg/L.

  4. Manufactured housing - Wikipedia

    en.wikipedia.org/wiki/Manufactured_housing

    The MHINCC distinguishes among several types of factory-built housing: manufactured homes, modular homes, panelized homes, pre-cut homes, and mobile homes. From the same source, mobile home "is the term used for manufactured homes produced prior to June 15, 1976, when the HUD Code went into effect." [2] Despite the formal definition, mobile ...

  5. I-house - Wikipedia

    en.wikipedia.org/wiki/I-house

    Structural failure reveals the interior layout of this house near Craigsville, Virginia. Second-floor rooms on the right side of the house feature doorways into a central hallway. The I-house is a vernacular house type, popular in the United States from the colonial period onward.

  6. House plan - Wikipedia

    en.wikipedia.org/wiki/House_plan

    The sub-floor plan provides construction details for this area, including the arrangement of services (such as plumbing and framing structures). Roof plans outline the type of roof and materials to use [4], its pitch and framing structure required. Interior elevation drawings provides detailed views of interior walls that showcase their design ...

  7. Mechanical, electrical, and plumbing - Wikipedia

    en.wikipedia.org/wiki/Mechanical,_electrical...

    A laboratory for testing automotive engines, showing plumbing and electrical setups integrated into the building. Competent design of plumbing systems is necessary to prevent conflicts with other trades, and to avoid expensive rework or surplus supplies. The scope of standard residential plumbing usually covers mains pressure potable water ...

  8. Orangeburg pipe - Wikipedia

    en.wikipedia.org/wiki/Orangeburg_pipe

    Orangeburg pipe was made of wood pulp sealed with liquified coal tar pitch in inside diameters from 2 inches to 18 inches, with a perforated version for leach fields. . Joints were made of the same material, and, because of the residual stickiness of the coal tar, were sealed without adh

  9. Igbo architecture - Wikipedia

    en.wikipedia.org/wiki/Igbo_Architecture

    The exact layout and number of sections can vary between communities and clans but a common arrangement includes the following: Òbi (Central hall) The Obi, in Igbo architecture, is the central heart and main house of the compound, often the residence is the head of the family or the patriarch. [ 6 ]