text: A standard size elevator is 2500 lbs. capacity. The floor area of an elevator of this capacity is 27.1 sq. ft. (about 4.5ft X 6 ft.).  The maximum floor area of a given capacity  elevator is restricted by ASME 17.1 Elevator Safety Code.  This means that a larger elevator must be capable of holding more weight. \nUnder elevator safety code all elevators in public buildings must be able to accommodate a wheel chair. \nThe size and shape of an elevator is determined by their intended use. A hospital elevator may be longer and narrow to accommodate a gurney.  An office building elevator may be square or any other combination of dimensions to meet the code requirement for its size.