fire scene reconstruction

Question 1

spalling

Answer 1

heated water inside concrete boils making piece of wall fall off
can indicate a certain temperature was reached

Question 2

Burn patterns

Answer 2

• can suggest the use of an accelerant as they look different to fuel use
  ‘sloshing’ pattern distinct to liquid fuels –> little spots of burn show splashes = ‘streamers’

Question 3

smoke record

Answer 3

deposits on all open surfaces - if the space is blank then it must have been covered

Question 4

Excavation

Answer 4

debris fallen over the scene could have covered seat of fire (indicated by V shape)
use this to establish the order of which objects fell

Question 5

electricity

Answer 5

electrical faults can cause fire and fire can cause electrical faults