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Posted by Old Tom on Mon Jul 28 01:54:43 2003, in response to Re: Elevator-fanning?,
posted by George Foelschow on Sun Jul 27 18:52:58 2003.
>>> I became aware of where elevators go to "rest" when I lived on the 18th floor of a 35-floor building in Chicago. <<<
Modern elevators in a building with multiple elevators do not go to rest at any particular floor. They usually have three modes of operation set by timers, as an Up-Peak, Down-Peak, and Off-Peak. During Up-Peak, the elevators will return to the main floor when they can, with some of them bypassing floors where passengers are waiting to board. Down-Peak, the cars do just the opposite, returning empty to the upper floors. In Off-Peak mode, at least one car is on the ground floor, and the others stay where they stop on the other floors, but if more than one is on the same upper floor, one of them will move to floor that has no elevator nearby.
Tom
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