What type of structural collapse occurs when the floor and /or roof assemblies on both sides of a load bearing wall collapse, allowing a good chance of victim survival?

What type of structural collapse occurs when the floor and /or roof assemblies on both sides of a load bearing wall collapse, allowing a good chance of victim survival?

• A. A-Frame
• B. Lean-to collapse
• C. V-shaped collapse
• D. Pancake collapse

Answer: (A)