Which of the following is NOT a condition for the requirement of smoke alarms according to building codes?

The requirement for smoke alarms in building codes typically emphasizes safety and the comprehensive coverage of residential spaces. Smoke alarms are mandated not only in sleeping areas but also in hallways leading to bedrooms and on every level of a home. This ensures that occupants are alerted to potential fires regardless of where they are in the house, maximizing their chances of escape and minimizing associated risks.

The choice that indicates smoke alarms are only required on the first floor does not align with the comprehensive safety measures outlined in building codes. Such measures are designed to ensure that smoke detectors are strategically placed to provide the best protection throughout the home. Therefore, limiting alarms to just the first floor would leave areas such as the bedrooms, which are often where people sleep and are most vulnerable, without detection capabilities in case of smoke or fire, significantly increasing risks to safety. This underscores the necessity for having smoke alarms distributed throughout the building rather than confined to only a single level.