409.3 Elevator Doors.
409.3.1 Power Operation.
Elevator car and hoistway doors and gates shall be power operated and shall comply with ANSI/BHMA A156.19 (1997 or 2002 edition) (incorporated by reference, see “Referenced Standards” in Chapter 1). Power operated doors and gates shall remain open for 20 seconds minimum when activated.
Elevator car doors or gates shall be positioned at the narrow end of the clear floor spaces required by 409.4.1.