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Elements and Performance Criteria

1. Prepare for surveying computations.
   • Task requirements are identified in consultation with appropriate persons.
   • Standards in relation to accuracy and tolerances are identified according to organisational requirements.
   • Computational equipment is selected according to task and organisational requirements.
2. Solve advanced computation problems.
   • Computations are performed on the coordinates of a traverse using computational equipment, and missing elements and coordinates are adjusted and computed.
   • Traverse information is reduced according to standards and task requirements.
   • Problems involving linear figures of parallel, constant or different width are identified and solved according to standards.
   • Road intersections involving different road widths are solved according to standards.
   • Computations are performed to maintain areas of closed figures according to industry-accepted standards.
   • Computations are performed on all elements of complex circular and reverse curves, and missing elements are solved according to industry-accepted standards.
3. Finalise computations.
   • Measurements and computations are checked to ensure accuracy according to industry-accepted standards and task requirements, and are adjusted as required.
   • Computations are finalised and recorded according to organisational requirements.

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 experienced surveying colleague manager qualified surveyor.

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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 advanced computations for two different surveying tasks.

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

communicate clearly with others to clarify work tasks

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

measurement, including circular geometry and trigonometry

calculating horizontal and vertical information

recorded computations

exercise precision and accuracy in performing advanced surveying computations

interpret statistics from adjustments relating to normal curve and distributions, and standard deviations and errors

select and use the computational equipment specified in the assessment conditions, to perform advanced surveying computations

solve computational problems relating to angular, linear and height observations

transform east and north coordinates from one system to another

check accuracy of computations and make necessary adjustments

comply with organisational requirements relating to completing records and documentation.

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Knowledge Evidence

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

industry-accepted standards relating to accuracy and tolerances for surveying computations

methods for performing the following:

computing data from supplied field information

solving complex surveying computations

checking accuracy of computations to identify errors and solve problems

organisational policies and guidelines relating to completing records and documentation.

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