In a wildland fire, a structure may be deemed hopeless when which condition exists?

In a wildland fire, a structure may be deemed hopeless when which condition exists?

• A. 25% or more of the roof involved
• B. Water supply low
• C. Personnel safety at risk
• D. Fire is under control

Answer: (A)

In wildland structure response, the extent of burning tells you a lot about whether saving the building is practical or safe. When about a quarter of the roof is burning, the fire has moved into the attic and roof structure, which drastically increases the risk of rapid collapse and makes interior attack unsafe. This level of involvement signals that the odds of saving the structure without unacceptable risk are very low, so the guideline is to consider the structure hopeless to save and shift to a defensive approach that protects lives and nearby exposures. Water supply being low or personnel safety concerns are serious, but they don’t on their own establish the definitive threshold for deeming a structure unsavable in the same objective way as significant roof involvement. If the fire were under control, that would indicate the opposite of hopeless.

In wildland structure response, the extent of burning tells you a lot about whether saving the building is practical or safe. When about a quarter of the roof is burning, the fire has moved into the attic and roof structure, which drastically increases the risk of rapid collapse and makes interior attack unsafe. This level of involvement signals that the odds of saving the structure without unacceptable risk are very low, so the guideline is to consider the structure hopeless to save and shift to a defensive approach that protects lives and nearby exposures.

Water supply being low or personnel safety concerns are serious, but they don’t on their own establish the definitive threshold for deeming a structure unsavable in the same objective way as significant roof involvement. If the fire were under control, that would indicate the opposite of hopeless.