NFPA 220 fire resistive ratings for Type III construction are listed as which pair?

• A. 221 and 200
• B. 222 and 111
• C. 221 and 111
• D. 200 and 200

Answer: (A)

NFPA 220 uses a two-part designation to express the fire-resistance requirements for the major assemblies in a given construction type. For Type III construction, the standard specifies two specific rating groupings that describe how the exterior walls and the interior/structural elements must perform in a fire scenario. The pair 221 and 200 reflects those two groupings: the first grouping (221) corresponds to the exterior wall and related interior vertical assemblies, indicating they require a two-hour level of fire resistance with the accompanying digits showing the other related components, while the second grouping (200) covers the floor-ceiling assemblies, where the digits indicate the applicable rating for that set of elements (in this case, the second grouping shows the level of resistance for those components). The other options propose combinations that do not align with how NFPA 220 encodes the two required ratings for Type III construction.