Closets under stairs require specific protection. Which statement best reflects this requirement?

Closets under stairs require specific protection. Which statement best reflects this requirement?

• A. Closets under stairs require specific protection.
• B. Closets under stairs require no protection.
• C. Closets under stairs protection depends on finish.
• D. Closets under stairs are exempt from protection.

Answer: (A)

Closets under stairs are treated as spaces where a fire can start and spread more covertly, with the potential to fasten heat and flames into the stair enclosure. In NFPA 13R designs for low-rise residences, these spaces must be sprinkler-protected to control a fire early and prevent involvement of the stairwell and upper floors, which is crucial for safe egress. Finishes do not change this requirement, and there are no exemptions. So, closets under stairs require specific protection.

Closets under stairs are treated as spaces where a fire can start and spread more covertly, with the potential to fasten heat and flames into the stair enclosure. In NFPA 13R designs for low-rise residences, these spaces must be sprinkler-protected to control a fire early and prevent involvement of the stairwell and upper floors, which is crucial for safe egress. Finishes do not change this requirement, and there are no exemptions. So, closets under stairs require specific protection.