What causes saddle burns in a fire investigation context?

Saddle burns are specific patterns observed during fire investigations, characterized by their unique shape, which resembles a saddle. These patterns occur primarily due to heat transfer from burning liquids or from radiant heat emanating close to the floor level. When combustible materials are exposed to intense heat, especially in situations where a liquid is burning nearby, they can develop these distinctive burn marks.

The process involves the heat rising and radiating outwards, creating concentrated zones of damage on the material. Unlike direct flame contact, which tends to cause more uniform or direct burns, saddle burns result from indirect heating. This can lead to localized damage where the air or materials above or adjacent to the heat source are affected, creating that signature saddle shape.

Understanding this phenomenon is crucial for fire investigators as it provides insights into the fire dynamics, such as the potential location of the ignition source and the nature of the materials involved in the fire.