Which NFPA standard defines the occupant escape time objective associated with 13R?

Which NFPA standard defines the occupant escape time objective associated with 13R?

• A. NFPA 13
• B. NFPA 13R
• C. NFPA 20
• D. NFPA 25

Answer: (B)

The concept here is life safety in residential sprinkler design—the time available for occupants to escape a fire. NFPA 13R is the standard crafted specifically for residential occupancies up to four stories and it establishes the criteria around how quickly an occupant can safely evacuate in a fire scenario, aligning the sprinkler design with a defined occupant escape time objective. This objective guides how the system is placed and activated so that early protection allows occupants to get out before conditions become untenable. The other standards don’t focus on this residential-specific escape criterion: NFPA 13 covers general, broader sprinkler installations, NFPA 20 addresses pumps, and NFPA 25 covers inspection and maintenance. Hence, NFPA 13R is the standard that defines the occupant escape time objective related to residential sprinkler design.

The concept here is life safety in residential sprinkler design—the time available for occupants to escape a fire. NFPA 13R is the standard crafted specifically for residential occupancies up to four stories and it establishes the criteria around how quickly an occupant can safely evacuate in a fire scenario, aligning the sprinkler design with a defined occupant escape time objective. This objective guides how the system is placed and activated so that early protection allows occupants to get out before conditions become untenable. The other standards don’t focus on this residential-specific escape criterion: NFPA 13 covers general, broader sprinkler installations, NFPA 20 addresses pumps, and NFPA 25 covers inspection and maintenance. Hence, NFPA 13R is the standard that defines the occupant escape time objective related to residential sprinkler design.