Which plotting method is NOT commonly used to document a fire scene?

The correct answer is the spiral mapping method, which is not commonly used to document a fire scene. In fire investigation, the primary focus is on accurately recording the layout and key evidence present at the scene. The most common methods for this are rectangular plotting, transecting base lines, and triangulation.

Rectangular plotting involves establishing a grid system that allows for precise locations of evidence to be recorded relative to fixed reference points. This method provides clear and organized documentation, facilitating the retrieval of evidence and the recreation of the scene.

Transecting base lines is a method where baseline measurements are taken and then used to plot the positions of various elements of the scene, maintaining accuracy in relation to those lines. This approach is beneficial in large areas where scaling and proportion are crucial for a comprehensive understanding of the fire dynamics.

Triangulation involves measuring distances from two fixed points to the evidence, forming a triangle where the location of the evidence is precisely calculated. This method is effective in ensuring that all evidence is accurately represented in relation to its surroundings.

In contrast, spiral mapping, while it may be useful in certain situations, does not provide the same level of clarity and accuracy as the other methods mentioned. It typically involves a circular movement around the scene and is less