Layered Excavation
Definition
The systematic removal of fire debris in documented layers, from the surface downward and from low-damage to high-damage areas, to preserve the stratigraphic record of fire development and structural collapse sequence.
Related terms
- 360-Degree Imaging
- Panoramic imaging systems (Matterport, Leica RTC360, FARO Focus) producing navigable point clouds and photospheres of fire scenes, enabling retrospective measurement and remote...
- ABE Guidance
- Achieving Best Evidence in Criminal Proceedings, the UK guidance framework published by the Ministry of Justice governing how investigators should conduct interviews...
- ASTM E1618
- Standard Test Method for Ignitable Liquid Residues in Extracts from Fire Debris Samples by Gas Chromatography-Mass Spectrometry. The active analytical standard defining...
- Confirmation Bias
- The cognitive tendency to search for, interpret, favour, and recall information in a way that confirms or supports one's prior beliefs or...
- Daubert Standard
- The US federal evidentiary standard (Daubert v. Merrell Dow Pharmaceuticals, 1993) requiring that expert testimony be based on scientifically valid methods with...
- Negative Corpus
- The discredited practice of concluding incendiary fire cause by eliminating all identifiable accidental causes without positive physical evidence of intentional fire-setting. NFPA...
- NFPA 921
- US National Fire Protection Association Guide for Fire and Explosion Investigations. The internationally accepted methodology Indian fire investigators and SFSL fire divisions...
- Scientific Method
- As applied in NFPA 921: the six-phase process of recognising the need, defining the problem, collecting data, analysing data, developing and testing...
- Total Station
- An electronic instrument that simultaneously measures horizontal and vertical angles and distance to a reflective prism, computing three-dimensional coordinates directly. Typical angular...
Explained in
- Fire Scene Examination and the NFPA 921 Systematic MethodologyThe systematic removal of fire debris in documented layers, from the surface downward and from low-damage to high-damage areas, to preserve the stratigraphic r...