ICC Commercial Building Inspector Practice Test

Which occupancy type allows for the use of a Class B interior wall and ceiling finish for the exit passageway without sprinklers?

1. Group A, Assembly

2. Group B, Business

3. Group F, Factory

4. Group R, Residential

The correct answer is: Group F, Factory

In the context of building codes, Class B interior wall and ceiling finishes are those that provide a moderate level of flame spread resistance. According to the International Building Code (IBC), certain occupancy types may permit the use of these finishes under specific conditions, including the absence of sprinklers. For factory occupancies, which fall under Group F, the code allows for some flexibility regarding interior finishes in exit passageways. This provision is rooted in the understanding that factory environments may not always require the same level of protection as assembly or residential spaces due to their unique characteristics and handling of materials. Group F occupancies can often utilize Class B finishes, particularly when sprinkler systems are not present, as they tend to have lower occupant loads and a different usage profile compared to other groups. In contrast, other occupancy types such as Group A (assembly) and Group R (residential) generally require more stringent regulations due to higher occupant levels and life safety concerns. Similarly, Group B (business) occupancies may also have different requirements regarding finish classifications. Therefore, the allowance for Class B finishes without sprinklers is a specific regulatory stance that applies to factory occupancies, making it the correct answer in this scenario.