California Residential Inspector Practice Exam

In what area are draftstops required to limit concealed spaces above ceiling assemblies?

1. Living space

2. Garage space

3. Usable space

4. Attic space

The correct answer is: Usable space

Draftstops are critical components in building construction designed to limit the spread of fire and smoke within concealed spaces, particularly above ceiling assemblies. They are required in areas where there are large, concealed voids that could allow fire and smoke to travel rapidly through a building. The requirement for draftstops is primarily focused on enhancing safety and preventing the rapid movement of smoke and flames from one area to another. In this context, usable space refers to areas designated for occupancy or utility, such as rooms that individuals will frequently access or use. By requiring draftstops in usable spaces, the building code aims to create barriers that help maintain safety and minimize the risk of fire spreading through these areas. While living space, garage space, and attic space could also require attention regarding fire safety, the specific reference to 'usable space' highlights areas directly utilized and occupied by individuals. This makes the presence of draftstops particularly important in protecting those who occupy and use those areas from potential hazards.