Which of the following is an example of Incidental Use Occupancy?

Incidental Use Occupancy refers to areas within a building that are intended for a primary use but also include spaces used for a secondary purpose that may have different occupancy requirements based on their inherent hazards. In this context, the incinerator room serves as an excellent example because it is typically a space where waste is disposed of through combustion, presenting potential hazards that require special consideration in terms of fire safety and building codes.

The presence of such a space necessitates additional safety measures due to the risks associated with fire and the handling of potentially hazardous materials, which distinguishes it from areas designed for general occupancy like residential apartments or hotel lobbies, where safety requirements are based on different considerations. In contrast, a residential apartment, a warehouse for storage, and a hotel lobby represent primary occupancies designed for their specific uses without the added layer of hazardous functionality found in an incinerator room.