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  2. CAD standards - Wikipedia

    en.wikipedia.org/wiki/CAD_standards

    A-G25---D-R (ISO13567: agent Architect, element wall in Uniclass, presentation dimensions, status Existing to be removed); A-G251-G-WallExtl-Fwd (AEC(UK): agent Architect, element External Wall in Uniclass, presentation graphic element, user definition "WallExtl" and view Forward);

  3. Knob-and-tube wiring - Wikipedia

    en.wikipedia.org/wiki/Knob-and-tube_wiring

    Wiring devices such as light switches, receptacle outlets, and lamp sockets were either surface-mounted, suspended, or flush-mounted within walls and ceilings. Only in the last case were metal boxes always used to enclose the wiring and device.

  4. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    A form of bus duct known as "plug-in bus" is used to distribute power down the length of a building; it is constructed to allow tap-off switches or motor controllers to be installed at designated places along the bus. The big advantage of this scheme is the ability to remove or add a branch circuit without removing voltage from the whole duct.

  5. Register (air and heating) - Wikipedia

    en.wikipedia.org/wiki/Register_(air_and_heating)

    An unlouvered wall register, which allows circulation of air from one floor to another. Registers vary in size with the heating and cooling requirements of the room. [5] If a register is too small, the HVAC system will need to push air through the ducts at a faster rate in order to achieve the desired heating or cooling.

  6. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...

  7. Electrical conduit - Wikipedia

    en.wikipedia.org/wiki/Electrical_conduit

    A duct bank will allow replacement of damaged cables between buildings or additional power and communications circuits to be added, without the expense of re-excavation of a trench. While metal conduit is occasionally used for burial, usually PVC , polyethylene or polystyrene plastics are now used due to lower cost, easier installation, and ...

  8. Device for Connection of Luminaires - Wikipedia

    en.wikipedia.org/wiki/Device_for_Connection_of...

    Device for Connection of Luminaires (DCL) is a European standard for ceiling light fixtures introduced in 2005 and refined in 2009. It uses 6 ampere. DCL must carry the CE marking as per the Low Voltage Directive. DCL is only allowed to be installed with ground. Example of DCL socket.

  9. House plan - Wikipedia

    en.wikipedia.org/wiki/House_plan

    Elevation view of the Panthéon, Paris principal façade Floor plans of the Putnam House. A house plan [1] is a set of construction or working drawings (sometimes called blueprints) that define all the construction specifications of a residential house such as the dimensions, materials, layouts, installation methods and techniques.