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  2. Mechanical floor - Wikipedia

    en.wikipedia.org/wiki/Mechanical_floor

    Mechanical floors are generally counted in the building's floor numbering (this is required by some building codes) but are accessed only by service elevators. Some zoning regulations exclude mechanical floors from a building's maximum area calculation, permitting a significant increase in building sizes; this is the case in New York City . [ 1 ]

  3. Skyscraper design and construction - Wikipedia

    en.wikipedia.org/wiki/Skyscraper_design_and...

    The elevators in a skyscraper are not simply a necessary utility like running water and electricity, but are in fact closely related to the design of the whole structure. A taller building requires more elevators to service the additional floors, but the elevator shafts consume valuable floor space.

  4. Mechanical room - Wikipedia

    en.wikipedia.org/wiki/Mechanical_room

    Mechanical room in a large office building. Mechanical room in federal building, Los Angeles, California. A mechanical room, [1] boiler room or plant room is a technical room or space in a building dedicated to the mechanical equipment and its associated electrical equipment, as opposed to rooms intended for human occupancy or storage.

  5. Elevator - Wikipedia

    en.wikipedia.org/wiki/Elevator

    The Roman Colosseum, completed in 80 AD, had roughly 25 elevators that were used for raising animals up to the floor. [3] Each elevator could carry about 600 pounds (270 kg) (roughly the weight of two lions) 23 feet (7.0 m) up when powered by up to eight men. [4]

  6. Double-deck elevator - Wikipedia

    en.wikipedia.org/wiki/Double-deck_elevator

    Double-deck elevators at Midland Square, Nagoya, Japan The Bailong Elevator Symbol seen within the upper cabin of the elevator in Roppongi Hills Mori Tower Double lobby ("lower lobby" and "upper lobby") to enter the elevators in Roppongi Hills Mori Tower. A double-deck elevator or double-deck lift is an elevator where one cab is stacked on top ...

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