Double-deck Goods/passenger Elevators
Not all double-deck elevators are used to transport passengers simultaneously in both decks. Sometimes one or more elevators in a building has a double-deck car, where the second deck is used for transportation of goods, typically outside of peak traffic periods. This technique has the advantages of preventing damage to interior fixtures due to impact from trolleys, and does not require a dedicated shaft solely devoted to a goods-only elevator car. During peak periods, the car is switched back to passenger mode, where it can expedite passenger movement into or out of the building.
As of 2011, no triple-deck elevators have been built, although such a design had been considered for the 163-floor Burj Khalifa before the final design was scaled back to double-deck. Also, Frank Lloyd Wright had envisioned five-deck elevators in his 1956 proposed Mile High Illinois.
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Famous quotes containing the words goods, passenger and/or elevators:
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