Under what conditions is it permissible to chain an exit door?

Chaining an exit door is considered highly hazardous because it obstructs a critical means of egress in the event of an emergency. The primary purpose of exit doors is to allow for safe and rapid evacuation during situations such as fires, natural disasters, or other emergencies. Keeping exit doors completely unobstructed at all times is essential for the safety of occupants.

Compliance with fire codes and regulations emphasizes that exit doors must always remain accessible and should never be chained or secured in a manner that would inhibit their use during an emergency. This ensures that everyone inside a building can evacuate swiftly and safely.

Options suggesting that chaining an exit door is permissible under specific conditions, such as emergencies, renovation work, or in low-traffic areas, undermine the foundational principle of maintaining accessible exits at all times. Thus, the correct understanding is that chaining an exit door is unacceptable under any circumstances.