What is the maximum travel distance between ceiling mounted smoke alarms in a dwelling?

The maximum travel distance between ceiling-mounted smoke alarms in a dwelling is 30 feet. This guideline is established to ensure that smoke alarms are effectively placed to provide early warning in the event of a fire. The 30-foot distance is based on the average time it takes for smoke to rise and activate the smoke alarm, giving occupants sufficient time to respond and evacuate.

Positioning smoke alarms within this distance helps to ensure that the alarms can be heard clearly throughout the living areas of a home. If smoke alarms are too far apart, there is a higher risk that smoke may not reach the alarm in time, potentially endangering occupants. This standard applies to single-storied dwellings and in various layouts, ensuring adequate coverage in areas most commonly occupied by residents.