Which collapse type occurs when one or more walls of a multistory building collapse, leaving the floors attached to and supported by the fallen walls?

Which collapse type occurs when one or more walls of a multistory building collapse, leaving the floors attached to and supported by the fallen walls?

• A. Cantilever Collapse
• B. Pancake Collapse
• C. V-Shaped Collapse
• D. Lean-to Collapse

Answer: (A)

Cantilever collapse happens when one or more walls fail but the floors above remain attached to and carried by the still-standing parts of the structure. The result is the floors being supported by the fallen walls, creating a cantilever effect where the intact structure holds up the upper levels. This matches the described scenario where walls collapse while the floors stay connected and supported by the remaining framework. Pancake collapse would have floors dropping down in a stacked fashion. V-shaped collapse forms a wide-open V as the structure folds inward from one or both sides. Lean-to collapse results in the building leaning to one side.

Cantilever collapse happens when one or more walls fail but the floors above remain attached to and carried by the still-standing parts of the structure. The result is the floors being supported by the fallen walls, creating a cantilever effect where the intact structure holds up the upper levels. This matches the described scenario where walls collapse while the floors stay connected and supported by the remaining framework.

Pancake collapse would have floors dropping down in a stacked fashion. V-shaped collapse forms a wide-open V as the structure folds inward from one or both sides. Lean-to collapse results in the building leaning to one side.