For doors with disabled re-opening devices, the maximum allowable kinetic closing force is how many foot-pounds?

The correct answer is 2.5 foot-pounds for the maximum allowable kinetic closing force for doors with disabled re-opening devices. This regulation is in place to enhance safety with automatic door systems. The specified limit is designed to minimize the risk of injury to passengers, particularly in situations where a door may close unexpectedly or with significant force.

Setting the limit at 2.5 foot-pounds recognizes the need for a balance between the functional operation of the door and the safety of individuals using the elevator. By adhering to this standard, elevator systems minimize the potential for any impact that could occur if a door were to close while someone is attempting to enter or exit.

Understanding this safety standard is crucial for elevator mechanics and inspectors, as it influences how they design, install, and maintain elevator doors to ensure compliance with safety regulations and to protect users effectively.