Which category in occupancy types is related to hazardous materials?

The category of occupancy types that is specifically related to hazardous materials is indeed hazardous. This classification pertains to facilities or areas where materials that can pose a risk to health, safety, or the environment are stored, used, or manufactured. Such facilities may include chemical plants, storage warehouses, and processing sites where combustible, toxic, or otherwise health-hazardous substances are handled.

In contrast, mercantile occupancies typically limit their activities to retail or wholesale businesses that do not generally involve hazardous materials. Assembly occupancies are designed for gatherings of people and are not inherently linked to hazardous materials, though they may have other safety considerations. Institutional occupancies include facilities like hospitals and schools, where the focus is on care and education rather than on the use of hazardous materials. Understanding these differences is crucial for fire and emergency services in terms of risk assessment, preparedness, and response strategies associated with hazardous materials.