In which building type is survivability (fire rating) for fire alarm risers mandatory under the National Building Code?

Question: In which building type is survivability (fire rating) for fire alarm risers mandatory under the National Building Code?

Answer options:

• Sprinkler monitoring only
• Underground parking garages
• Single-story warehouses ✅ High-rise buildings (NBC 3.2.6)

Correct answer: High-rise buildings (NBC 3.2.6)

Explanation: ULC-S524 suggests vertical risers serve multiple floors. A 2-hour fire-rated enclosure or cable (survivability) ensures that a fire on Floor 2 doesn't sever the connection to Floor 20. This is typically required in High-Rise (3.2.6) buildings.