NFPA 13R aims to allow occupants to escape in case of fire for how many minutes?

NFPA 13R aims to allow occupants to escape in case of fire for how many minutes?

• A. 10 minutes
• B. 20 minutes
• C. 30 minutes
• D. 45 minutes

Answer: (C)

NFPA 13R is built to protect life in low-rise residential occupancies by keeping the environment tenable long enough for people to get out. The design goal is to maintain tenable conditions for at least 30 minutes after a fire starts, giving occupants a practical window to escape and allowing responders to arrive. Shorter times like 10 or 20 minutes wouldn’t reliably accommodate typical escape needs in residential settings, especially with smoke and disorientation, while a longer 45 minutes isn’t the stated objective of this standard. So, a 30-minute escape window is the appropriate, designated duration.

NFPA 13R is built to protect life in low-rise residential occupancies by keeping the environment tenable long enough for people to get out. The design goal is to maintain tenable conditions for at least 30 minutes after a fire starts, giving occupants a practical window to escape and allowing responders to arrive. Shorter times like 10 or 20 minutes wouldn’t reliably accommodate typical escape needs in residential settings, especially with smoke and disorientation, while a longer 45 minutes isn’t the stated objective of this standard. So, a 30-minute escape window is the appropriate, designated duration.