What is a typical indicator of an exterior wall collapse?

A typical indicator of an exterior wall collapse is demonstrated through various warning signs that can signal imminent danger. Smoke billowing from the roof can indicate a fire inside that may compromise structural integrity. Unstable ground conditions might suggest shifting or settling that affects the wall's support. Additionally, roof sagging is a critical structural warning that points to potential overload or deterioration of the building's framework.

When considering these factors collectively, they reinforce the overall assessment of structural stability, with each factor contributing insights into the impending risk of wall collapse. Recognizing all these indicators as part of a comprehensive safety evaluation is essential for effective decision-making and ensures the safety of both responders and civilians. Hence, choosing an answer that includes the essence of all these signs captures the full scope of situational awareness required during emergencies.