20284
28-Jun-16
1 of 4
POLICE FORENSIC MAPPING
Produce a computer generated plan to
provide crime scene information
level:
6
credit:
6
planned review date:
April 2006
sub-field:
Police
purpose:
This unit standard is intended for sworn or warranted police
officers. People credited with this unit standard are able to:
produce a computer screen image of a plan using field data
and specialist software; reduce field distances; calculate
elevations from vertical angles; identify requirements, print a
plan to specified requirements and provide crime scene
information.
entry information:
Recommended: Unit 20282 Set up survey instruments and
record observations for the purpose of police forensic
mapping; or demonstrate equivalent knowledge or skills.
accreditation option:
Evaluation of documentation and visit by NZQA and industry.
moderation option:
A centrally established and directed national moderation
system has been set up by The Skills Organisation.
special notes:
1
Definitions
Crime scene is any location where an incident has
occurred. The commission of the incident upon
investigation may disclose a criminal offence against
the criminal statutes of New Zealand law.
Total station (also known as EDM) refers to a
surveyor’s theodolite, fully integrated with electronic
distance measuring equipment, an on board data
recorder and a feature code library, to enable the
collection of observations, by recording the location of
points of interest.
Feature code libraries refers to the software library
used within an EDM distance measuring device.
 New Zealand Qualifications Authority 2016
20284
28-Jun-16
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POLICE FORENSIC MAPPING
Produce a computer generated plan to
provide crime scene information
2
Police general instructions and best practice guides and
codes of conduct relating to traffic crash reporting,
investigation and forensic mapping, and evidence
disclosure requirements apply to this unit standard.
3
Legislation applying to this unit standard may include
but is not limited to the Cadastral Survey Act 2002,
Health and Safety in Employment Act 1992, Police Act
1958, Transit New Zealand Act 1989, Trespass Act
1980, and all regulations related to these acts.
4
For additional information refer to:
Elfick, Fryer, Brinker & Wolf Elementary Surveying 8th
edition. Hammersmith, London: HarperCollins, 1994.
Elements and Performance Criteria
element 1
Produce a computer screen image of a plan using field data and specialist software.
Range:
includes but is not limited to a total station.
performance criteria
1.1
Data from the total station is downloaded.
1.2
Survey errors are corrected according to police best practice guides.
1.3
Feature codes are edited according to police best practice guides.
1.4
Hard and soft copies of raw data are produced to meet police best practice
guides and evidence disclosure requirements.
1.5
Feature codes are used to obtain a computer connection of all downloaded
measured scene data.
1.6
Screen image of plan is produced.
 New Zealand Qualifications Authority 2016
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POLICE FORENSIC MAPPING
Produce a computer generated plan to
provide crime scene information
1.7
Colour is used to highlight specific portions of the plan.
Range:
includes but is not limited to – trees, shrubs, roadside furniture,
road markings, tyre friction marks
element 2
Reduce field distances.
performance criteria
2.1
Slope distances are reduced in accordance with standard trigonometry
procedures.
element 3
Calculate elevations from vertical angles.
performance criteria
3.1
Differences in elevation between surveyed points are calculated from vertical
angles in accordance with standard trigonometry principles.
element 4
Identify requirements, print a plan to specified requirements and provide crime scene
information.
performance criteria
4.1
Requirements of hard copy plans are identified and explained.
4.2
Printed plan has north oriented to the top of the page where possible.
Range:
4.3
magnetic north or true north.
Printed plan scale is set according to police best practice guides.
Range:
standard or scale bar.
 New Zealand Qualifications Authority 2016
20284
28-Jun-16
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POLICE FORENSIC MAPPING
Produce a computer generated plan to
provide crime scene information
4.4
Information borders on the plan are identified and described.
Range:
symbols, line types, legend.
4.5
Plan meets police best practice guides.
4.6
Plan shows all forensic exhibits as required.
4.7
Where the crime scene is within a building, individual rooms are shown in plan
view.
4.8
Where the crime scene is within a building, all interior rooms in the plan are
joined correctly according to police best practice guides.
4.9
The plan shows the site in relation to its surroundings.
4.10
Cross sections are plotted and drawn to an appropriate scale.
Comments on this unit standard
Please contact The Skills Organisation info@skills.org.nz if you wish to suggest changes
to the content of this unit standard.
Please Note
Providers must be accredited by the Qualifications Authority or a delegated interinstitutional body before they can register credits from assessment against unit standards
or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by the Qualifications Authority before
they can register credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for providers wishing to
develop education and training programmes, such as minimum qualifications for tutors and
assessors, and special resource requirements.
This unit standard is covered by AMAP 0121 which can be accessed at
http://www.nzqa.govt.nz/site/framework/search.html.
 New Zealand Qualifications Authority 2016