What is a double-deck lift?
Answer:
*Double deck lifts are lifts designed such that two lift cars are attached one on top of the other. This allows passengers on two consecutive floors to be able to use the lift simultaneously, significantly increasing the passenger capacity of a lift shaft.
Such a scheme can prove efficient in buildings where the volume of traffic would normally have a single lift stopping at every floor.
Architecturally, this is important as double-deck lifts occupy less building core space than traditional single-deck lifts do for the same level of traffic. In skyscrapers, this allows for much more efficient use of space as the floor area required by lifts tends to be quite significant.
However, double deck lifts gives rise to questions such as whether the lower deck only serves even numbered floors (and the upper deck odd numbered floors) or if both decks can access all floors (except perhaps the upper deck cannot reach the ground floor and the lower deck cannot reach the top floor??).
*Additional information sourced from the free online "Wikipedia" encyclopædia http://en.wikipedia.org/wiki/double-deck...
http://www.library.northwestern.edu/exhi...
http://www.zdistrict.com/wp-content/uplo...
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