23875 version 1
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Demonstrate knowledge of, and set up, survey instruments and targets
Level
3
Credits
8
Purpose
This unit standard is for people who are working, or who intend to work, in
the surveying profession in jobs that require them to use surveying
instruments in the field.
People credited with this unit standard are able to: demonstrate knowledge
required for using surveying instruments in the field; set up and care for
surveying equipment; centre and level surveying instruments accurately over
survey marks; and clean, store, and demonstrate routine maintenance of
surveying instruments.
Subfield
Surveying
Domain
Survey Practice
Status
Registered
Status date
25 February 2008
Date version published
25 February 2008
Planned review date
31 December 2012
Entry information
Open.
Replacement information
This unit standard replaced unit standard 8774.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Infrastructure ITO
Accreditation and Moderation Action Plan (AMAP) reference
0101
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
The following documentation must be complied with:
instrument manufacturer’s instructions;
traffic management plan.
 New Zealand Qualifications Authority 2016
23875 version 1
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2
Definitions
Workplace procedures refer to documented procedures specific to an enterprise
which set out the quality management requirements for the business practice and
activities of that enterprise.
GNSS refers to global navigational satellite system, and includes satellite based
positioning systems such as GPS, GLONASS, and Galileo;
Galileo refers to a European operated GNSS;
GLONASS refers to a Soviet space-based navigation system;
GPS refers to the United States NAVSTAR GPS or Navigation Signal Timing and
Ranging Global Positioning System.
Elements and performance criteria
Element 1
Demonstrate knowledge required for using surveying instruments in the field.
Performance criteria
1.1
Components of surveying instruments are identified and described in terms of
their function.
Range
instruments – theodolite, target, level, total station, GNSS unit,
laser level, steel band or steel tape, plummet, tripod, levelling staff;
may include – surveying compass, abney level.
1.2
Calibration requirements for surveying instruments are explained in accordance
with instrument manufacturer’s instructions.
1.3
Levelling of surveying instruments is explained in terms of using vial bubbles.
Range
1.4
circular bubble, plate bubble.
Centring instruments over surveying marks is explained in terms of importance,
and centring methods are outlined in accordance with workplace procedures.
Range
marks – flush, buried, elevated;
method – plumb bob, optical plummet, laser plummet, plumbing
pole.
 New Zealand Qualifications Authority 2016
23875 version 1
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Element 2
Set up and care for surveying equipment.
Range
equipment – theodolite, target, level, total station, GNSS unit, plummet, tripod,
levelling staff, automatic optical level, change plate, staff bubble, surveying
compass, optical level;
may include – laser level, steel band or steel tape, radio.
Performance criteria
2.1
Surveying equipment is secured while travelling in accordance with workplace
procedures and instrument manufacturer’s instructions.
2.2
Surveying equipment is set up in accordance with instrument manufacturer’s
instructions.
2.3
Care and handling of surveying equipment on site are demonstrated in
accordance with manufacturers' instructions.
Range
2.4
the lid of the instrument case is closed and locked when not in
use, instruments are secured to tripod when removed from case.
Unattended surveying equipment is secured in accordance with workplace
procedures and a traffic management plan.
Element 3
Centre and level surveying instruments accurately over survey marks.
Range
instruments – theodolite, total station, target, GNSS, tripod.
Performance criteria
3.1
The instrument is set up in accordance with manufacturers' instructions.
3.2
A stable observing platform is established in accordance with instrument
requirements.
3.3
The instrument and observing targets are centred and levelled over survey
marks with one millimetre accuracy.
Range
candidates are expected to complete this task within a timeframe
that is consistent with workplace requirements for efficiency.
3.4
Positioning of the instrument takes account of the topography and the height of
observer to ensure accurate readings are achieved.
3.5
The height of the instrument is measured to one millimetre accuracy and is
recorded in accordance with workplace procedures.
 New Zealand Qualifications Authority 2016
23875 version 1
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Element 4
Clean, store, and demonstrate routine maintenance of surveying instruments.
Performance criteria
4.1
Instruments are cleaned and stored after use in accordance with instrument
manufacturer’s instructions.
Range
instruments – theodolite, target, level, total station, GNSS unit,
plummet, tripod, levelling staff, surveying compass, optical level;
may include – laser level, steel band or steel tape, radio;
cleaning includes but is not limited to – drying.
4.2
Batteries are recharged in accordance with instrument manufacturer’s
instructions.
4.3
Tripod maintenance is demonstrated in accordance with instrument
manufacturer’s instructions.
Range
includes but is not limited to – tightening of top plate screws,
shoes/feet, lubrication of clamp screws.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA 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 organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
 New Zealand Qualifications Authority 2016