Devon Anderson & Will Dempster

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Presentation transcript:

Devon Anderson & Will Dempster V-Pattern Angle Myth Devon Anderson & Will Dempster

The Myth The faster a fire burns, the slower it will spread horizontally and the closer the angles will be vertically. On the other hand, the slower a fire burns the further the angle will tilt from vertical. “A fire which is hot and fast at the point of origin will leave a sharp V-pattern. A slow fire will produce a shallow V.” –The Army’s Field Manual

Why it’s a Myth The nature of any wall covering and conditions of ventilation have important effects on the shape of the burn patterns. The angle of the borders of the V-pattern do not indicate the speed of fire growth or rate of heat release of fuel alone.

How it Affects Arson Investigation Origin of V can help locate the point of ignition -Normally along a wall (short circuit) Concerning width of V – all factors need to be taken into account (ventilation, type of wall, etc.)