At what height above or below the floor level do elevator door restrictors engage?

Elevator door restrictors are safety mechanisms designed to prevent the elevator doors from opening when the elevator is not aligned with the landing. The restrictors typically engage at a height of 18 inches above the floor level. This engagement height is critical because it helps ensure that elevators operate safely and reduces the risk of accidents caused by doors opening unexpectedly when the elevator is not positioned correctly at a landing. This standard height helps maintain operational safety and compliance with building codes concerning elevator systems. Being aware of this height is essential for firefighters and other emergency responders as they approach situations involving elevators during a fire or other emergency scenarios.