An elevator car includes a first floor for delimiting a transport space above it, and a second floor for delimiting a second transport space above it. One of the first and second floors is a displaceable floor, the elevator car being shiftable between a double-decker-state and a single decker-state by displacing the displaceable floor. A construction-time elevator arrangement and a method for elevator use during construction of a building, which implement the elevator car, are also disclosed.

An elevator system may include upper and lower shuttle cars in a first shaft. The shuttle cars are at least at times fixedly coupled to one another and can move vertically upward and downward together. Upper and lower distribution cars in a second shaft may be movable vertically upward and downward separately. The upper shuttle and upper distribution cars may each comprise a stopping point at an upper shuttle level. The lower shuttle and lower distribution cars may each comprise a stopping point at a lower shuttle level. The second shaft may include a first stop element that can selectively limit a driving range of the upper distribution car to the upper shuttle level and a range vertically above it. A second stop element in the second shaft may selectively limit a driving range of the lower distribution car to the lower shuttle level and a range vertically below it.