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The American National Elevator Standards Group (ANESG) sets an elevator weight standard to be 1,000 kg (2,200 lb). Additional requirements relating to access by disabled persons, may be mandated by laws or regulations such as the Americans with Disabilities Act. Elevators marked with a Star of Life are big enough for a stretcher. [101]
This list ranks the largest skyscrapers in the world by floor area. To be included on this list, buildings must meet the definition of a skyscraper outlined above and have a floor area of approximately 200,000 m 2 (2,200,000 sq ft) or more.
If the service core (which contains the elevator shafts) becomes too big, it can reduce the profitability of the building. Architects must therefore balance the value gained by adding height against the value lost to the expanding service core. [10] Many tall buildings use elevators in a non-standard configuration to reduce their footprint.
If the service core, which contains the elevator shafts, becomes too big, it can reduce the profitability of the building. Architects must therefore balance the value gained by adding height against the value lost to the expanding service core. [81] Many tall buildings use elevators in a non-standard configuration to reduce their footprint.
Because of the building's height, it was deemed infeasible to have many elevators or large elevator cabins, so the builders contracted with the Otis Elevator Company to make 66 cars that could speed at 1,200 feet per minute (366 m/min), which represented the largest-ever elevator order at the time. [234]
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.