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  2. Pipe hitch - Wikipedia

    en.wikipedia.org/wiki/Pipe_hitch

    A pipe hitch is a hitch-type knot used to secure smooth cylindrical objects, [2] such as pipes, poles, beams, or spars. According to The Ashley Book of Knots , a pipe hitch is "used to lower a pipe or hoist one" [ 1 ] and as "another method of tying to a rectangular timber."

  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. List of knots - Wikipedia

    en.wikipedia.org/wiki/List_of_knots

    Pipe hitch – hitch-type knot used to secure pipes/poles; Plafond knot; Poldo tackle – an instant tension-applying and tension-releasing mechanism in rope; Pratt knot – a method of tying a tie around one's neck and collar; Pretzel link knot – in knot theory, a branch of mathematics, a pretzel link is a special kind of link; Prusik knot ...

  5. List of knot terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_knot_terminology

    The reef knot can capsize if one of its standing ends is pulled.. A knot that has capsized or spilled has deformed into a different structure. Although capsizing is sometimes the result of incorrect tying or misuse, it can also be done purposefully in certain cases to strengthen the knot (see the carrick bend [4]) or to untie a seized knot which would otherwise be difficult to release (see ...

  6. Plumber's snake - Wikipedia

    en.wikipedia.org/wiki/Plumber's_snake

    A plumber's snake or drain snake or drain auger is a slender, flexible auger used to dislodge clogs in plumbing. The plumber's snake is often reserved for difficult clogs that cannot be loosened with a plunger. It is also sometimes called a toilet jack. A plumbers snake is often used by plumbers to clear a clogged drain pipe or sanitary sewer.

  7. Hitch (knot) - Wikipedia

    en.wikipedia.org/wiki/Hitch_(knot)

    A knot used to attach a rope or line to an object. Palomar knot: A knot that is used for securing a fishing line to a fishing lure, snap or swivel. Pile hitch: A kind of hitch, which is a knot used for attaching rope to a pole or other structure. Pipe hitch: A hitch-type knot used to secure smooth cylindrical objects. Prusik knot

  8. Taut-line hitch - Wikipedia

    en.wikipedia.org/wiki/Taut-line_hitch

    The taut-line hitch is an adjustable loop knot for use on lines under tension.It is useful when the length of a line will need to be periodically adjusted in order to maintain tension.

  9. French drain - Wikipedia

    en.wikipedia.org/wiki/French_drain

    A diagram of a traditional French drain. A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.