Environmental Engineering Reference
In-Depth Information
tABle 3.3
sketching checklist
By.eliminating.irrelevant.details.and.adding.measurements,.you.can.often.sketch.a.scene.more.clearly.
than.you.can.photograph.it..The.following.points.will.make.sketching.for.accident.maps.easy.without.
sacriicing.accuracy.
. 1.. Use.graph.paper..Let.each.square.represent.a.ixed.distance.such.as.a.foot,.and.write.the.scale.at.
the.bottom.of.the.sketch.
. 2.. Use.a.strip.of.graph.paper.to.measure.diagonals.on.the.sketch.
. 3.. Locate.each.important.object.with.a.rough.outline.
. 4.. Label.large.objects.inside.their.outline..Label.small.objects.outside.their.outline.with.an.arrow.to.
the.object;.the.arrow.should.just.touch.the.object.
. 5.. For.maps.with.a.lot.of.detail,.use.a.sketch.log..Use.double.letters.to.identify.reference.points.and.
single.letters.to.identify.items.of.evidence.
. 6.. Indicate.distances.of.movable.objects.from.at.least.two.ixed.points..Logs.for.detailed.maps.have.
columns.for.measurement.data.
. 7.. Include.a.north.arrow.in.each.sketch.
. 8.. Mark.camera.positions.by.a.letter.inside.a.circle..Later,.the.appropriate.letter.should.be.used.on.
each.print.
. 9.. Identify.the.sketches.with.a.label,.data.box,.or.on.the.back.with.date,.time,.place,.description,.
who did.the.sketch,.etc.,.just.as.you.would.a.photograph.
tABle 3.4
general uses of Photographs in Accident Investigations
. 1.. Orientation.to.the.scene.of.an.accident
. 2.. Record.of.the.detail.of.injury.and.damage
. 3.. Record.of.relative.positions.of.large.numbers.of.items.or.damaged.fragments
. 3.. Depiction.of.witnesses'.views.of.the.scene
. 4.. Evidence.of.improper.assembly.or.use.of.equipment,.materials,.and.structures
. 5.. Detail.of.marks,.spills,.instructional.aids,.signs,.etc.
. 6.. Records.of.disassembly.of.parts.for.analysis.by.examination
. 7.. Evidence.of.deterioration,.abuse,.and.lack.of.proper.maintenance
. 8.. Location.of.parts,.or.other.evidence,.overlooked.during.early.stages.of.the.investigation
. 9.. Depiction.of.the.sequence.of.failure.of.machines
.10.. Analysis.worksheets
.11.. Illustration.for.follow-on.training
Note: . A. photograph. log. should. be. maintained. in. order. to. document. what. was.
photo.graphed.and.the.sequence.of.photos.(see.Table 3.5).
As.the.site.is.viewed,.some.items,.which.should.be.recorded.by.position,.include
.
1.. The.dead.and.injured.people
.
2.. Machines,.vehicles,.and.other.types.of.equipment.involved.in.or.affected.
by.the.accident
 
Search WWH ::




Custom Search