ABSTRACT
To evaluate a structural fire effectively, an investigator must have a basic understanding of building construction. A working knowledge of commonly used materials and their effect on and reaction to fire spread is essential. Under normal conditions, (e.g., no accelerants or explosives) the rate of burning and the intensity and path of a fire are directly affected by a building's construction and types of materials. Personal safety is of the utmost importance to any investigator: before entering a fire-damaged structure, an investigator must be able to evaluate its stability. The potential for internal collapse poses the greatest danger.
