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  2. 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 ...

  3. Mechanical floor - Wikipedia

    en.wikipedia.org/wiki/Mechanical_floor

    Floors 92–100 contain communications equipment [4] and so are not typically counted as mechanical since they do not service the building itself. One World Trade Center: Floors 2–19, 92–99, and 103–104 – total 28/104, 26%). Previous WTC (Twin Towers): Floors 7–8, 41–42, 75–76, and 108–109 – total 8/110, 7%. The 110th Floor of ...

  4. Space elevator construction - Wikipedia

    en.wikipedia.org/wiki/Space_elevator_construction

    Then, progressively heavier cables would be pulled up from the ground along it, repeatedly strengthening it until the elevator reaches the required mass and strength. This is much the same technique used to build suspension bridges. The length of this cable is 35,786 km or 35,786,000 m. A 20-ton cable would weigh about 1.12 grams per m. [4]

  5. Elevator (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Elevator_(aeronautics)

    On many low-speed aircraft, a trim tab is present at the rear of the elevator, which the pilot can adjust to eliminate forces on the control column at the desired attitude and airspeed. [2] Supersonic aircraft usually have all-moving tailplanes ( stabilators ), because shock waves generated on the horizontal stabilizer greatly reduce the ...

  6. Coupland's elevators - Wikipedia

    en.wikipedia.org/wiki/Coupland's_elevators

    Coupland's elevators (also known as chisels) [1] [2] are instruments commonly used for dental extraction. They are used in sets of three each of increasing size and are used to split multi-rooted teeth and are inserted between the bone and tooth roots and rotated to elevate them out of the sockets. [ 3 ]

  7. Santa Justa Lift - Wikipedia

    en.wikipedia.org/wiki/Santa_Justa_Lift

    In July 2002, the Santa Justa Elevator celebrated its first centenary; along with the three remaining cable railways of Lavra, Glória and Bica, they were all classified as National Monuments in the same year. [1] [2] [4] After remodelling and renovation, the elevator walkway was reopened in February 2006 for the general public and tourists. [2]

  8. Space elevator - Wikipedia

    en.wikipedia.org/wiki/Space_elevator

    A space elevator, also referred to as a space bridge, star ladder, and orbital lift, is a proposed type of planet-to-space transportation system, [1] often depicted in science fiction. The main component would be a cable (also called a tether ) anchored to the surface and extending into space.

  9. Space elevator economics - Wikipedia

    en.wikipedia.org/wiki/Space_elevator_economics

    A space elevator built according to the Edwards proposal is estimated to have total cost of about $40 billion (that figure includes $1.56 billions operational costs for first 10 years). Subsequent space elevators are estimated to cost only $14.3 billion each. [14] For comparison, in potentially the same time frame as the elevator: