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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]
Johnson Lifts established a joint venture with Japanese company Toshiba Elevator and Building Systems Corporation (a subsidiary of Toshiba) called Toshiba Johnson Elevators (India) Pvt. Ltd. on 27 October 2012. [15] [16] [17] Johnson Lifts stated that it entered into the partnership as it lacked the technology to produce high-speed lifts. The ...
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 .
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.
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.
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As well as being a resource for the lift industry, the building is also available to companies requiring tall vertical spaces, for example companies wishing to test working-at-height safety devices. There are six lift shafts of varying heights and speeds, including a high-speed shaft with a travel of 100 metres (328 ft 1 in) and a theoretical ...
The drive terminal is also the location of a lift's primary braking system. The service brake is located on the drive shaft beside the main drive, before the gearbox. The emergency brake acts directly on the bullwheel. While not technically a brake, an anti-rollback device (usually a cam) also acts on the bullwheel.