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Elements and Performance Criteria

1. Prepare for precision survey.
   • Project specifications, precision survey objectives, and accuracy requirements are identified in consultation with appropriate persons.
   • Risks are identified and controlled, and contingencies managed according to organisational requirements.
   • Specialised equipment and attachments for precise levelling and setting out are determined and selected according to project specifications.
   • Precise levelling run is carried out and results are calculated and recorded according to organisational requirements.
2. Apply techniques for precise setting out.
   • Applications of specialised surveying techniques used for precise setting out are determined according to project specifications.
   • Remote measuring systems to be used for industrial measurements are determined according to project specifications.
   • Set-out and observations are conducted according to project specifications, using instruments and attachments suitable for precise setting out.
3. Detect structural deflection and deformation.
   • Survey methods used to check horizontal movement of engineering structures and instruments used to monitor verticality of tall structures are determined.
   • Survey methods used to check vertical movement due to settlement of engineering structures caused by tunnelling and mining are determined.
   • Precision survey of an accuracy that will detect and monitor deformation or deflection of engineering structure is carried out according to project specifications.
4. Finalise precision survey.
   • Precision survey is finalised and checked according to project specifications and organisational requirements.
   • Appropriate persons are notified of survey results according to organisational requirements.
   • Survey documentation is completed and data archived 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 colleague engineer manager registered or qualified surveyor.
Remote measuring systems must include at least one of the following:	precise intersection techniques robotic instruments terrestrial photogrammetry.

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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 conduct two different precision surveys.

While conducting the above precision surveys, the person must:

analyse standards, specifications and information in plans and drawings to determine surveying and precision requirements

apply precision surveying techniques, measurements and error analysis to achieve specified accuracies and precision tolerances

carry out precise levelling run, using two of the following pieces of specialised equipment and attachments:

global navigation satellite system (GNSS)

gyro-theodolite

optical and digital level

optical reading instruments

total station (reflectorless)

total station (theodolite function)

carry out precise setting out using one of the following instruments and attachments:

auto collimation and laser eyepieces

total stations

zenith and nadir auto plumb instruments

carry out precise setting out using one of the following remote measuring systems:

precise intersection techniques

robotic instruments

terrestrial photogrammetry

use industry-accepted survey methods to detect and monitor deflection and deformation of structures

communicate clearly with others to clarify and report project information

comply with organisational and legal requirements for:

completing records and documentation

recording, storing and filing data

using, checking and storing surveying equipment

working safely and using personal protective equipment (PPE)

plan and implement risk management and contingency strategies.

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Knowledge Evidence

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

accuracy standards and field procedures for high-precision horizontal and vertical control surveys

basic application of electromagnetic measuring principles and techniques

common terms used in precision surveying calculations

data reduction techniques

basic concepts of algebra, geometry and trigonometry

industry-accepted methods for error analysis

legislative, statutory and industry requirements and standards relating to work tasks

methods for computing three-dimensional (3-D) coordinates and coordinate changes by intersection

organisational policies and procedures relating to:

health and safety relating to survey activities

reporting and documentation

using specialised surveying equipment, attachments and instruments

standard plan design and presentation conventions

surveying methods used to detect horizontal and vertical movement of structures.

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