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  2. Carport - Wikipedia

    en.wikipedia.org/wiki/Carport

    Carport in front of garages One example of the many common types of modern carports sold on the market. This particular one is a stand-alone model. Carport in Japan. A carport is a covered structure used to offer limited protection to vehicles, primarily cars, from rain and snow. The structure can either be free standing or attached to a wall.

  3. Drain-waste-vent system - Wikipedia

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

    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.

  4. 12×12 - Wikipedia

    en.wikipedia.org/wiki/12×12

    12x12 may refer to: 12×12=144, a common times tables size in the English-speaking world; Twelve wheel drive (12x12), a vehicle configuration with 12 wheels, all of them drive wheels; Twelve Steps and Twelve Traditions a book published by Alcoholics Anonymous World Services; 12"x12 New Order Vinyl Campaign, a series of 12 12-inch single ...

  5. Windcatcher - Wikipedia

    en.wikipedia.org/wiki/Windcatcher

    It is possible for a windtower-ventilated building to have very high flow rates; 30 air changes per hour were measured in one experiment. [5] Uniform, stable flow with no stagnant corners is important. Turbulent flow should therefore be avoided; laminar flow is more effective at maintaining human comfort [4] (for an extreme example, see Tesla ...

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