Which facility requires at least 15 foot candles?

A facility requiring at least 15 foot candles of illumination indicates a standard for adequate lighting to ensure safety and functionality. Foot candles measure the amount of light falling on a surface; thus, the specified level is essential in areas where tasks are performed or where safety is an issue.

The utility room, serving as a functional space for various tools and equipment, needs sufficient lighting to facilitate safe and effective operations. Similarly, a janitor's closet, which may contain cleaning supplies and equipment used frequently, must also be adequately lit to prevent accidents and improve efficiency. Lastly, bathrooms require a minimum level of lighting for safety and accessibility, ensuring that users can navigate the space without mishaps.

Hence, all the listed facilities—utility rooms, janitor's closets, and bathrooms—are aligned with the requirement for at least 15 foot candles of illumination to maintain a safe and conducive environment. This standard emphasizes the importance of proper lighting across different applications, ensuring that all these spaces are appropriately illuminated for their intended use.