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Elevators are one of the critical machinery in a highrise Apartment Building. It is important that the maintenance staff as well as Management Committee Members are aware of some of the important aspects of their Elevators. Types of Elevators in Apartment Complexes Generally there are two types of Elevators in Residential Complexes: 1.  Geared-traction elevators.  These are moved by hoist cables driven by a geared reduction unit, and are generally used in midrise, mid-speed applications, such as commercial buildings of nine floors or less and residential buildings of 18 floors or less.  Speed of these Elevators: Five floors or less: 200 feet per minute Nine floors or less: 350 feet per minute Eighteen floors or less: 450 feet per minute 2.  Gearless-traction elevators.  These are moved by hoist cables driven directly by a large-frame motor, and are generally used for high-rise, high-speed applications, such as commercial buildings over nine floors an...