What aspect does egress analysis focus on in fire investigations?

Egress analysis primarily focuses on human movement during emergencies, which is crucial in understanding how people will react and navigate their escape routes in the event of a fire. This aspect is essential for fire investigators to evaluate the effectiveness of evacuation plans and the design of escape routes within a structure.

Understanding human movement includes analyzing factors such as crowd dynamics, speed of evacuation, and bottleneck locations that may impede safe egress. By studying these elements, investigators can determine whether the building’s design and features adequately support safe and efficient evacuations during a fire emergency.

While traffic flow during evacuations can be a part of egress considerations, it is more specific to the coordinated movement of people rather than the general human behavior aspect that egress analysis emphasizes. Factors like the heat resistance of materials and the duration of fire spread pertain more to the fire dynamics and structural integrity rather than the human factors involved in escape.