Construction Supervisor License Practice Exam

What is the minimum number of smoke detectors required for a two-story, single-family dwelling that is 44 feet long by 30 feet wide?

1. One

2. Two

3. Three

4. Four

The correct answer is: Four

In a two-story, single-family dwelling, building codes typically require smoke detectors on each level to ensure safety and effective early warning in case of a fire. For a dwelling of this size, at a minimum, there should be one smoke detector installed in the basement (if applicable), one on the ground floor, and one in each sleeping area on both floors. The layout you're looking at, being a two-story home, means that at least one detector should be strategically placed on each level for optimum coverage. It is also best practice to have smoke detectors in or near each bedroom to provide alerts when occupants are most vulnerable. Therefore, a total of four smoke detectors would be appropriate – one on each level of the house, plus additional detectors in each sleeping area. This thorough approach enhances safety by ensuring that all areas of the home are adequately monitored for fire risks. This conclusion is consistent with fire safety recommendations and building codes that stress the importance of comprehensive smoke detection in residential properties.