Locks and latches are permitted in means of egress doors in which of the following?

Locks and latches are permitted in means of egress doors in certain types of occupancies to ensure safety while maintaining security. In places of detention, security is paramount; thus, locks and latches are allowed for safety reasons, preventing unauthorized access and ensuring the safety of individuals within those facilities.

In Group B occupancy, which includes business areas where people gather for professional purposes, locks and latches can also be utilized. However, it is essential that they comply with safety standards to ensure that occupants can exit the building quickly in case of an emergency.

Likewise, in Group M occupancy, which covers mercantile spaces like retail stores, locks and latches are permitted as long as they do not impede egress during emergencies. Properly designed locking mechanisms allow for security while still enabling safe and quick exits.

Therefore, the answer indicates that the use of locks and latches is permissible across these specific occupancy groups, emphasizing the balance between security needs and the critical necessity of safe egress for occupants.