What is the allowable maximum force developed by a door closer?

The allowable maximum force developed by a door closer is defined to ensure safe and efficient operation of automatic doors. A door closer is designed to control the speed and force with which the door closes, preventing injury or damage to the door or surrounding structures.

The correct answer of 30 foot-pounds is in line with industry standards that stipulate the maximum force should not exceed this value. This limit helps to ensure that when the door closes, it does so with sufficient force to protect against slamming without posing a safety risk. It balances the door's function and operation while considering the physical safety of users, particularly in high-traffic areas or places where vulnerable individuals may be present.

In the context of other options, while some may present higher tolerances, they do not align with the recommended safety standards and regulations that aim to protect all users interacting with the door. Adhering to the established limit of 30 foot-pounds helps buildings maintain compliance with safety codes and ultimately ensures a safer environment for employees, visitors, and clients.