ICC Commercial Building Inspector Practice Test

What is the maximum quantity of Class IIIA combustible liquid allowed in storage in a fully sprinklered building?

1. 500 pounds

2. 660 pounds

3. 800 pounds

4. 1000 pounds

The correct answer is: 660 pounds

In fire safety regulations, the classification of combustible liquids is based on their flash points and associated risks. Class IIIA combustible liquids have a flash point of 140°F (60°C) or higher but less than 200°F (93°C). When it comes to storage limits for such liquids in fully sprinklered buildings, regulations are designed to prevent fire hazards while considering the protective capability of the sprinkler system. The NFPA (National Fire Protection Association) guidelines generally establish a maximum storage quantity for Class IIIA liquids, particularly in relation to a building's fire protection features. In a fully sprinklered building, the maximum allowable quantity for Class IIIA combustible liquids is often set at 660 pounds. This quantity ensures that while enough combustible liquid can be stored for operational needs, it minimizes the risk of fire spread, which is critical in the event that a fire were to occur. The sprinkler system's design helps to mitigate fire impact, allowing for this higher limit compared to non-sprinklered or less protected buildings. Thus, understanding the relationship between the protective measures (like sprinklers) taken within commercial buildings and the associated storage limits for hazardous materials is key in ensuring safety compliance and risk management in industrial and commercial environments.