Application
This unit of competency specifies the outcomes required to set out stormwater systems and associated engineering structures using surveying methods and equipment. The unit covers using horizontal and vertical control techniques to set out marks and lines to define the position and level of design points on site. It also covers interpreting plans, maps and specifications to conduct measurements and calculations that ensure stormwater components and related engineering structures are in the correct plan position and at the correct reduced level. The unit requires the ability to measure, calculate and reduce surveying data, including fall of land and volume relating to contours, spot heights and cross-sections. It also requires the ability to check and validate measurements against specifications and complete set-out documentation.
The unit supports those who work under limited supervision in a surveying team.
No licensing, legislative, regulatory, or certification requirements apply to this unit of competency at the time of endorsement.
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions. | ||
1. | Prepare for stormwater system set-out. | 1.1. | Project and client requirements for stormwater system are identified and interpreted. |
1.2. | Relevant plans, maps and stormwater specifications are accessed and analysed to identify principal work activities. | ||
1.3. | Equipment is selected and prepared according to manufacturer specifications and organisational requirements. | ||
1.4. | Work is planned in consultation with appropriate persons to meet survey specifications and timeframes. | ||
2. | Use control techniques for set-out. | 2.1. | Horizontal control points are located throughout the work area and coordinates are set out according to plans and specifications. |
2.2. | Design points are set out from base lines by offsetting, and positions are checked to ensure correct tolerances according to specifications. | ||
2.3. | Primary and secondary controls are used and accuracy is checked according to plans and specifications. | ||
2.4. | Set-out pegs or markers are used to indicate base lines and offsets relative to the work area. | ||
2.5. | Vertical control points are established to ensure design points are positioned at correct levels according to plans and specifications. | ||
2.6. | Offsets and profiles are put in place to define the main lines of stormwater works and provide vertical controls. | ||
2.7. | Measured surveying data is reduced and calculations, including fall of land and volume, are conducted according to industry-accepted standards and organisational requirements. | ||
3. | Finalise stormwater system set-out. | 3.1. | Measurements are checked according to plans and specifications to ensure correct plan position and reduced level of set-out. |
3.2. | Discrepancies between specifications and actual activities are identified and addressed or reported according to organisational requirements. | ||
3.3. | Stormwater system set-out is finalised and documentation completed according to organisational requirements. | ||
Evidence of Performance
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 set out stormwater systems and associated engineering structures for two different projects.
While setting out the above stormwater systems and associated engineering structures, the person must:
plan work tasks by checking plans, drawings, maps, specifications and control marks
set out marks and lines to define position and level of design points on site using two of the following pieces of equipment:
hand-held laser measuring device
global navigation satellite system (GNSS)
level
tape
total station
use horizontal and vertical control techniques to position design points and markers
measure and calculate data within industry-accepted tolerances for accuracy
comply with manufacturer specifications when using equipment
check measurements to ensure accuracy of plan position and reduced level of set-out and address identified discrepancies
reduce and manipulate surveying data
communicate clearly with others to clarify and report project information
comply with organisational and legislative requirements for:
identifying hazards, using personal protective equipment (PPE), and working safely
recording, storing and filing data
setting up and using surveying equipment.
Evidence of Knowledge
A person demonstrating competency in this unit must demonstrate knowledge of:
mathematical concepts relating to algebra, trigonometry and geometry and their use in calculating spatial measurements
methods for calculating fall of land and volume relating to:
contours and spot heights
cross-sections: mean area and end area using trapezoidal, prismoidal and Simpson’s rules
regular objects, including cone, cylinder, pyramid, wedge, frustum and sphere
methods for calculating surveying data and verifying its accuracy using primary and secondary controls
methods for establishing a control network that meets specified tolerances
methods for recording spatial data relating to set-out
methods for setting up, levelling and calibrating equipment used to set out stormwater systems
purpose of primary and secondary controls for set-out
reference and coordinate systems for surveying data, including Australian Height Datum and Map Grid of Australia
types of pegs and markers used during set-out and methods for ensuring their optimal placement on site
types of stormwater systems and their purposes.
Assessment Conditions
The following must be present and available to learners during assessment activities:
equipment:
as specified in the performance evidence, including PPE
specifications:
task specifications, drawings, maps and plans
organisational policies, procedures and documentation relating to work health and safety
relationships with team members and supervisor:
working in a team.
Timeframe:
as specified by project requirements.
Assessor requirements
As a minimum, assessors must satisfy the assessor requirements in the Standards for Registered Training Organisations (RTOs) current at the time of assessment.
Foundation Skills
This section describes the language, literacy, numeracy and employment skills essential to performance in this unit but not explicit in the performance criteria. | |
Skill | Performance feature |
Numeracy skills to: | perform surveying calculations relating to height, distances, slope, angles and coordinates use datum and contours to calculate fall of land and volume. |
Oral communication skills to: | ask questions to clarify task requirements report and discuss project information. |
Reading skills to: | interpret graphical information in plans, drawings and contour maps. |
Writing skills to: | record field notes in a format that can be interpreted by a third party. |
Technology skills to: | connect observations to coordinate systems set up, calibrate and operate surveying equipment. |
Problem-solving skills to: | identify and use primary and secondary controls to improve accuracy of measurements. |
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. |
Sectors
Surveying and spatial information services