Forensic Engineering and Technical Examinations: Construction, Fire, Transport, and Computer
Forensic Engineering and Technical Examination
This domain tests causation analysis in technical systems: whether a defect caused a construction failure, where and how a fire started, how a collision occurred, and what a computer system did. Method matters more than opinion.
Core rules
- Construction: compare design, materials, and workmanship with norms; identify defect and causation; distinguish construction defect from maintenance or use.
- Fire: establish origin, ignition source, and spread; use burn patterns, witness evidence, and laboratory tests; avoid negative corpus reasoning.
- Transport: reconstruct speed, position, and reaction times from scene data, damage, and vehicle systems; state assumptions.
- Computer: preserve data by imaging and hashing; maintain chain of custody; analyse logs, artefacts, and timestamps; avoid altering the original.
- In all: calibration, validated models, and documented assumptions.
Worked example
A warehouse fire is attributed to an electrical fault. The expert examines the origin area, wiring, and protection devices, and checks whether the pattern supports a short circuit. If the area is severely damaged, the conclusion should state confidence limits. The reasoning links the physical pattern to a possible ignition source, not to a named responsible person.
Traps
- Using negative corpus in fire investigation.
- Reconstructing a collision without scene measurements.
- Working on an original hard drive instead of an image.
- Confusing technical cause with legal fault.