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Elements and Performance Criteria

  1. Prepare for geodetic surveying computations.
  2. Perform computations on reference surface.
  3. Perform computations on projection plane.

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Appropriate persons must include at least one of the following:

client

colleague

end user

manager

registered or qualified surveyor.


Performance Evidence

A person demonstrating competency in this unit must satisfy the requirements of the elements, performance criteria, foundation skills and range of conditions of this unit. The person must also accurately perform geodetic surveying computations for two different surveying tasks.

While performing the above geodetic surveying computations, the person must:

apply formulas to geodetic data and obtain correct results

communicate clearly with others to clarify work tasks

comply with organisational requirements and relevant standards essential to accuracy of:

calculating geodetic data

recording computations

exercise precision and accuracy in geodetic computations

perform calculations in a logical progression to solve geodetic surveying problems

perform point to point calculations on:

projection plane

spheroid

relate reference surfaces to geodetic components

check accuracy of computations and resolve errors

select and use the following computational equipment to perform geodetic surveying computations: scientific or programmable calculator or a software application that includes surveying calculations

comply with organisational requirements relating to completing records and documentation.


Knowledge Evidence

A person demonstrating competency in this unit must demonstrate knowledge of:

industry-accepted standards relating to accuracy and precision for geodetic surveying data

common terms used in geodetic surveying calculations

computing aids and software used to perform geodetic computations

data reduction techniques

industry-accepted methods for validating data to identify errors and discrepancies

methods to perform projection plane computations relating to the following:

angle or bearing calculations on Map Grid of Australia (MGA)

arc to chord corrections

grid bearings

grid convergence

latitude and longitude to grid coordinates

point and line scale factor

point to point calculations

project zone calculations

transforming coordinate axes

using MGA and Geocentric Datum of Australia software

zone to zone transformations

methods to perform reference surface computations relating to the following:

meridian convergence

point to point calculations

principle radii

spheroidal distance from observed distance.