Final answer:
PA system speakers in high rises are required in the common areas to provide announcements and instructions during emergencies. They must meet building codes and safety regulations, ensuring coverage and audibility throughout the building.
Step-by-step explanation:
In high rises, PA (Public Address) system speakers are typically required in common areas, such as lobbies, hallways, and evacuation routes. These speakers are essential for providing announcements, alerts, and instructions during emergencies, such as fires, evacuations, or other incidents that require communication to residents and visitors. They are often integrated with fire alarm systems to ensure everyone in the building receives audible warnings and instructions.
According to building codes and safety regulations, these systems must be designed to cover all areas of the building, including stairwells, elevator banks, and even parking garages. The design and installation have to meet specific acoustic criteria to ensure they are clearly audible above ambient noise levels. The use of PA systems is part of a comprehensive life safety strategy in high-rise buildings.