What is the primary objective of scene size-up in a structural collapse incident?

• A. To quickly identify hazards, assess structural stability, locate potential victims, and set up a safe plan for operations.
• B. To establish a formal incident command structure only.
• C. To immediately begin rescue without evaluating structure.
• D. To document all victims before stabilization.

Answer: (A)

The on‑scene size-up is about rapidly forming a clear picture of what you’re walking into so you can work safely and effectively. In a structural collapse, you need to quickly identify hazards (unstable debris, potential secondary collapses, gas or electrical hazards), assess how the structure is likely to behave and where it might remain stable, locate potential victims or voids where they could be, and use that information to set up a safe, workable plan for entry, search, and rescue. This approach protects responders from becoming part of the problem and helps focus effort where it’s most likely to succeed, while establishing priorities, safety zones, necessary resources, and a path for ongoing operations.

Focusing only on establishing a formal incident command structure misses the on‑scene realities that drive immediate actions and safety decisions. Beginning rescue without evaluating the structure risks triggering further collapse or exposing rescuers to harm. Documenting all victims before stabilization isn’t feasible or safe—the situation must be stabilized and understood before detailed victim documentation can be accurately and safely pursued.