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Elements and Performance Criteria

1. Prepare for glass laser measurement and levelling
   • Determine task requirements through review of documentation and inspection of windows and doors to be installed
   • Select laser levelling equipment suitable for the installation and set up to manufacturer recommendations
   • Plan levelling in detail including sequencing, and prioritise tasks and system requirements
   • Identify and mitigate potential site hazards for personnel and property and/or select control measures in accordance with the work plan
2. Use laser devices to make measurements
   • Take accurate measurements using laser levelling devices, and correctly interpret and record in accordance with standard operating procedures
   • Locate or set up datum point from measurements
   • Take readings to datum and at nominated or selected stations, to project specifications
3. Perform levelling
   • Make levelling realignment calculations using correct and appropriate methods for the installation levelling and/or alignment application
   • Level and align glass window and door components to specifications using correct and appropriate techniques, and make adjustments to ensure compliance with manufacturer specifications and the work plan
   • Temporarily fix glass components in the assigned installation positions prior to final measurement
   • Undertake final level and alignment inspections, make any adjustments and fix glass components to the building using appropriate fasteners
4. Complete work
   • Close down levelling equipment and notify appropriate personnel of completed installation in accordance with workplace requirements
   • Clear, clean, restore and secure work area of waste, in accordance with site and/or workplace procedures
   • Maintain plant, tools and equipment and store in accordance with site and/or workplace procedures
   • Finalise and document completion details in accordance with workplace procedures