Unit of competency Outline

Date retreived
22/07/2026 8:49 AM AWST

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Perform geodetic surveying computations

Perform geodetic surveying computations

Unit of competency
National Code
CPPSIS5054A
State Code
WE809
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
27/11/2012
State Implementation and Classification
Approved Date
27/02/2013
Field of Education
031101 - Surveying
Original Release Date
27/02/2013
Nominal Hours
60
Description
This unit of competency specifies the outcomes required to perform basic relevant geodetic surveying calculations. It requires the ability to analyse data and plan approaches to technical problems. Functions would be carried out within organisational guidelines.
Notes
Elements and Performance Criteria
1 Prepare to perform geodetic surveying.
  • 1.1 Geodetic surveying task objectives are defined.
  • 1.2 Pertinent standards are identified, considered and adhered to according to project specifications.
  • 1.3 Special resource requirements are identified.
2 Perform computations on the reference surface.
  • 2.1 A relevant reference surface is selected for the required geodetic computations.
  • 2.2 Data is reduced to the required reference surface.
  • 2.3 Geodetic components for reference surface are identified and computed.
  • 2.4 Computations on the reference surface and computations on the projection plane are identified and conducted.
  • 2.5 Checks are completed according to requirements and problems are solved.
  • 2.6 Organisational documented and undocumented practices are adhered to.
3 Perform computations on the projection plane.
  • 3.1 Relevant projection plane is selected for required geodetic computations.
  • 3.2 Data is reduced to the required projection plane.
  • 3.3 Geodetic componentsfor projection plane are identified and computed.
  • 3.4 Checks are completed according to established requirements.
4 Finalise the task.
  • 4.1 Required documentation is completed promptly, accurately and according to organisational guidelines.
  • 4.2 Relevant personnel are informed of the results according to organisational guidelines.
  • 4.3 Spatial data is archived according to project specifications.
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording in the performance criteria is detailed below. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.
Geodetic surveying refers to:
surveying that takes into account the shape and size of the earth.
Objectives may include:
agreed client requirements
written survey data specifications.
Pertinent standards are standards essential to the accuracy of:
calculation of horizontal information
fixing lines for maintaining areas
measurement
recording.
Project specifications refer to:
detailed technical descriptions of the survey data and its requirements.
Resource requirements may include:
calculators
computers
software.
Reference surface may include:
relevant reference ellipsoid.
Data may be:
measured or otherwise
geodetic data derived from:
global navigation satellite system (GNSS)
total station.
Geodetic components may include:
geodetic control: a network of sites for which precise positions and heights are known and for which the shape and size of the earth are taken into account
geodetic parameters
other information required on the relevant surface or projection plane.
Computations on the reference surface may include:
meridian convergence
point to point calculations (Robbin’s formula)
principle radii
spheroidal distance from observed distance.
Computations on the projection plane may include:
angle/bearing calculations on Map Grid of Australia (MGA)
arc to chord corrections
grid convergence
grid bearings
point and line scale factor
point to point calculations
transformation of coordinate axes
use of MGA and GDA 94 software
Australian Map Grid (AMG) and MGA
latitude and longitude to grid coordinates
Required documentation may include:
field records
final product reports
survey plots.
Organisational guidelines may include:
code of ethics
company policy
legislation relevant to the work or service function
manuals
personnel practices and guidelines outlining work roles and responsibilities.
Relevant personnel may include:
managers
supervisors
surveyors.
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, the range statement and the Assessment Guidelines for this Training Package.
Overview of assessment
This unit of competency could be assessed on its own or in combination with other units relevant to the job function, for example CPPSIS5053A Perform advanced surveying computations.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
A person who demonstrates competency in this unit must be able to provide evidence of:
applying checks wherever necessary
applying formulas appropriately and obtaining correct results
applying solutions to a range of problems
assessing and recording computations from varied sources
defining terms used in geodetic surveying calculations
demonstrating a sound understanding of the requirement for accuracy in calculations
understanding mathematical concepts and techniques
performing calculations in a logical progression to solve geodetic surveying problems.
Specific resources for assessment
Resource implications for assessment include access to:
assessment instruments, including personal planner and assessment record book
assignment instructions, work plans and schedules, policy documents and duty statements
registered training provider of assessment services
relevant guidelines, regulations and codes of practice
suitable venue and equipment.
Access must be provided to appropriate learning and assessment support when required.
Where applicable, physical resources should include equipment modified for people with disabilities.
Context of assessment
Holistic: based on the performance criteria, evidence guide, range statement, and required skills and knowledge.
Method of assessment
Demonstrated over a period of time and observed by the assessor (or assessment team working together to conduct the assessment).
Demonstrated competency in a range of situations, that may include customer/workplace interruptions and involvement in related activities normally experienced in the workplace.
Obtained by observing activities in the field and reviewing induction information. If this is not practicable, observation in realistic simulated environments may be substituted.
Guidance information for assessment
Assessment requires that the clients’ objectives and industry expectations are met. If the clients’ objectives are narrowly defined or not representative of industry needs, it may be necessary to refer to portfolio case studies of a variety of surveying and spatial information services requirements to assess competency.
Oral questioning or written assessment and hypothetical situations (scenarios) may be used to assess underpinning knowledge (in assessment situations where the candidate is offered a preference between oral questioning or written assessment, questions are to be identical).
Supplementary evidence may be obtained from relevant authenticated correspondence from existing supervisors, team leaders or specialist training staff.
All practical demonstration must adhere to the safety and environmental regulations relevant to each State or Territory.
Where assessment is for the purpose of recognition (recognition of current competencies [RCC] or recognition of prior learning [RPL]), the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time.
In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge.
Assessment processes will be appropriate to the language and literacy levels of the candidate and any cultural issues that may affect responses to the questions, and will reflect the requirements of the competency and the work being performed.
Replaces
State Code National Code Title Type
D1534 CPPSIS5024A Perform geodetic surveying computations Unit of competency
Replaced By
State Code National Code Title Type
AXG11 CPPSIS5054 Perform geodetic surveying computations Unit of competency
State Code National Code Title Type
J357 CPP50112 Diploma of Surveying Qualification