NFPA 72 states: “Smoke alarms in rooms with ceiling slopes greater than
1 ft in 8 ft (.3m in 2.4 m) horizontally shall be located on the high side of
the room.” NFPA 72 states: “A row of detectors shall be spaced and locat-
ed within 3 ft (0.9m) of the peak of the ceiling measured horizontally.”
• Locate the smoke alarms in all sleeping areas. Try to monitor the exit path
as the bedrooms are usually farthest from the exit. If more than one sleeping
area exists, locate additional alarms in each sleeping area.
• Locate additional alarms to monitor any stairway as stairways act like
chimneys for smoke and heat.
• Locate at least one alarm on every floor level.
• Locate an alarm in every bedroom.
• Locate an alarm in every room where electrical appliances are operated
(i.e. portable heaters or humidifiers).
• Locate an alarm in every room where someone sleeps with the door
closed. The closed door may prevent an alarm not located in that room
from waking the sleeper.
• Smoke, heat, and combustion products rise to the ceiling and spread
horizontally. Mounting the smoke alarm on the ceiling in the center of
the room places it closest to all points in the room. Ceiling mounting is
preferred in ordinary residential construction.
ANYWHERE ALONG
THIS BOLD SURFACE
30.5 cm
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
ANYWHERE ALONG
THIS BOLD SURFACE
30.5 cm
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
FIGURE 1
ANYWHERE ALONG
THIS BOLD SURFACE
30.5 cm
Locations permitted for smoke
alarms and smoke detectors
on tray-shaped ceilings.
FIGURE 2
FIGURE 3
2. RECOMMENDED LOCATIONS FOR ALARMS
