When the distance from the ceiling to the top of the door is greater than 24 inches, how many smoke detectors are required on each side of the door?

In fire alarm systems, the placement of smoke detectors is crucial for effective smoke detection and early warning. When the distance from the ceiling to the top of the door exceeds 24 inches, it is permissible to install smoke detectors in a manner that maximizes their effectiveness in detecting smoke that might rise from the floor level.

When the ceiling height allows space above the door, it becomes essential to have adequate smoke detection on both sides of the door to ensure that smoke is not allowed to accumulate undetected. Installing two smoke detectors on each side of the door ensures comprehensive coverage, allowing for early detection in case of a fire, where one detector might not activate due to smoke being blocked or diverted by the door itself or other obstructions.

This approach helps comply with safety regulations and standards that aim to reduce the risk of fire-related hazards by ensuring that smoke is detected as quickly as possible in various environments. Having multiple detectors helps in increasing the reliability of the alarm system and enhances overall safety in the building.