Presence of a passenger elevator in the structure, ascertained for occupied and vacant housing units in structures with four or more stories or floors. Elevators are counted even if used largely, though not exclusively, for freight. Also included are stairway elevators and wheelchair lifts installed in structure of four or more stories. This item was asked on a sample basis.
The number of housing units in structures with four or more stories with no passenger elevator or with only elevator service used for freight.
Similar data were collected in 1960 and 1970; in 1960, however, these data were collected only in cities with 50,000 or more persons.
See also: "Stories In Structure".