Which statement about the Type II fire resistive ratings is accurate?

• A. The ratings sequence is 222 111 000
• B. Exterior walls are the only rated elements
• C. Ratings do not apply to floors
• D. Ratings are not standardized

Answer: (A)

Type II fire resistive ratings are shown in a fixed, three-part notation that indicates how long different building elements resist fire. Each group of numbers corresponds to a specific element family, and the digits represent hours of fire resistance. In this context, the standard sequence is 222 111 000. That means the first group (typically floors/ceiling assemblies) is rated for 2 hours, the second group (walls) for 1 hour, and the last group carries a 0, indicating no rating for that category in this configuration. This standardized pattern is why this statement is accurate. Exterior walls aren’t the only rated elements, ratings do apply to floors, and these ratings are defined by a standardized system rather than being arbitrary.