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Elevator. Outside of typical elevators, shown in an office building in Portland, Oregon. This elevator to the Alexanderplatz U-Bahn station in Berlin is built with glass walls and doors, exposing the inner workings. An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between ...
A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.
Lift slab construction. Lift slab construction (also called the Youtz-Slick Method) is a method of constructing concrete buildings by casting the floor or roof slab on top of the previous slab and then raising (jacking) the slab up with hydraulic jacks. This method of construction allows for a large portion of the work to be completed at ground ...
The driving system for a home lift can be built inside the lift structure itself and features a screw, an electric motor, and a nut mounted behind the control panel of the lift's platform; it is thus referred to as a "screw and nut" system. When the lift is operated, the engine forces the nut to rotate around the screw, pushing the lift up and ...
The Petronas Towers' structural system is a tube in tube design, invented by Bangladeshi-American architect Fazlur Rahman Khan. [7][8] Applying a tube-structure for extreme tall buildings is a common phenomenon. [9][10] The 88-floor towers are constructed largely of reinforced concrete, with a steel and glass facade designed to resemble motifs ...
A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium. The most familiar form is an elevator, the car of which is raised and lowered by a hoist mechanism.
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