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Set out site for construction works
|Unit Descriptor||This competency standard covers the process of setting out a site for construction works in accordance with site plans and specifications. These tasks may be done in advance of proposed works or in conjunction with construction works already being carried out. The work is likely to be under limited supervision from others, with checking only related to overall progress.The setting out of a site for construction works is normally done within routines, methods and procedures, where some discretion and judgement is required in the interpretation of site plans and specifications, and the equipment to be used to verify existing and proposed site features, dimensions and levels.|
|1 . Interpret site plans and specifications||
|2 . Locate and mark out position of construction works||
|3 . Establish datum point and survey benchmarks on site||
|4 . Take and verify site levels||
|Key Competency||Examples of Application||Performance|
|How can information be collected, analysed and organised?||The taking of site levels and recording of readings using surveyors instruments may need to be communicated to a fellow worker.||1|
|How are ideas and information communicated within this competency?||Site plans and specifications outline information that should be analysed and then transferred on to a site.||1|
|How are activities planned and organised?||The setting out of a site for construction works may require a number of activities to be planned and organised.||1|
|How are problem solving skills applied?||Team work may be required to mark out the shape of proposed construction works.||1|
|How are mathematical ideas and techniques used?||Mathematical ideas and techniques, such as the reading of levelling equipment and the use of geometrical shapes, may be required.||1|
|How is use of technology applied?||Problems may arise when surveying instruments are out of specification and require adjustment.||1|
|How is team work used within this competency?||Technology may be applied with the use of levelling equipment.||1|
What components are likely to be included in site plans and specifications?
Components may include site location, scale of plan, north symbol, name of project, legend, associated plan references, plant lists, details of special features, existing vegetation and structures, and services above and below ground.
What other available plans may be referred to?
Other plans may include surveyors plans which may provide information on utility services, site levels, boundary lines, easements and rights of way, or engineers and architect plans that may show other proposed works.
What equipment is likely to be used when setting out a site for construction works?
Equipment may include tapes, a compass, pegs, string lines, line marking equipment, a lump or mash hammer, ranging rods, arrows, plumb bobs, levelling equipment, and personal safety equipment such as a coloured vest, safety boots, sun hat and sun screen lotion.
What could be considered an environmental impact in relation to proposed construction works?
Any construction works may impact on the environment in either a positive or negative manner. If it is drainage and irrigation, this may reduce excess water, nutrient and chemical flow into natural waterways. If the works involve excavation, then this may damage the soil structure and stability of the site.
What OHS hazards may apply to setting out a site for construction works?
Hazards may include solar radiation, uneven surfaces, strings, tapes and measures that may be tripped over, sharp equipment and surrounding obstacles.
How would existing site features be located from a site plan?
The location of features may include the use of baselines, offset measurements, angles and grids.
What scale measurements are likely to be used on site plans?
Metric scales may include: 1 metre to 10 metres = 1:10, 1 metre to 20 metres = 1:20, 1 metre to 50 metres = 1:50, 1 metre to 100 metres = 1:100 and 1 metre to 200 metres = 1:200.
What shape are proposed construction works likely to be on a site plan?
Proposed construction works are likely to be basic geometric shapes including straight lines, curved lines, circles, squares, triangles, rectangles and ellipses.
How could the shape of the proposed construction works be marked out on site?
The shapes may be marked out or set out on the site by using paint from a spray can, lime, stringlines, pegs, stakes, rods and arrows.
What are the likely reasons for taking levels when setting out a site for construction works?
The reasons for taking levels may be to determine height above sea level or a datum of drainage outlets, areas and volumes in cut and fill operations, any changes in slope or gradient of the land, contours of the land, to provide the means for safe and efficient construction of structures, to achieve falls for drainage of stormwater from pavements, falls in pipe work or for installing sumps and drains, and to help set out of step risers, treads, goings, nosings, landings and hand-rails to Australian Building Regulations.
What levelling equipment is likely to be used to verify site levels?
Levelling equipment may include spirit levels, line bubbles, water levels, boning rods, dumpy levels, pegs, tilting levels, automatic levels, laser levels, plumb bobs, staves and tripods.
What specific knowledge is needed to achieve the performance criteria?
Knowledge and understanding are essential to apply this standard in the workplace, to transfer the skills to other contexts, and to deal with unplanned events. The knowledge requirements for this competency standard are listed below:
interpretation of symbols and use of a legend on site plans and specifications, particularly in relation to benchmarks and the location of existing features
understanding of compass directions, the difference between true North and magnetic North and how to locate North from a site plan
an awareness of other plans that may be referred to when setting out a site for construction works
an awareness of common levelling and surveying terms
environmental awareness associated with the preparation for construction works to ensure that the impact on the environment is minimal when works are implemented
OHS hazards associated with setting out a site for construction works.
What specific skills are needed to achieve the performance criteria?
To achieve the performance criteria, appropriate literacy and numeracy levels as well as some complementary skills are required. These include the ability to:
implement mathematical and geometrical principles when locating and marking out a site for construction works
use a range of surveyors instruments
analyse and interpret detailed site plans and specifications.