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Elements and Performance Criteria

1. Plan and prepare
   • Access, interpret and apply construct underpinning documentation and ensure the work activity is compliant
   • Obtain, interpret, clarify and confirm work instructions before proceeding
   • Confirm and apply environmental protection and safety requirements
   • Obtain, interpret and implement traffic management signage requirements
   • Select and check for faults tools and equipment to carry out tasks
   • Select and wear correct personal protective equipment appropriate for work activities
   • Identify, address and report hazards, risks and environmental issues
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
2. Set out and prepare sections
   • Confirm and apply setout requirements
   • Identify and record underpinning requirements for adjoining properties and roadways
   • Identify and implement sections and sequence of excavations
   • Check existing shoring system for soundness
   • Set out sections for excavation
   • Identify and protect areas for excavation and surrounding working space requirements
   • Erect barricades and signage
   • Position plant and equipment for excavations
3. Excavate sections
   • Excavate designated sections to the designed depth of footings
   • Install trench and excavation support
4. Construct underpinning
   • Construct underpinning
   • Backfill excavated sections
   • Underpin alternate sections in sequence
5. Clean up
   • Clear work area and dispose of or recycle materials
   • Clean, check, maintain and store plant, tools and equipment
6. Plan and prepare
   • Access, interpret and apply construct underpinning documentation and ensure the work activity is compliant
   • Obtain, interpret, clarify and confirm work instructions before proceeding
   • Confirm and apply environmental protection and safety requirements
   • Obtain, interpret and implement traffic management signage requirements
   • Select and check for faults tools and equipment to carry out tasks
   • Select and wear correct personal protective equipment appropriate for work activities
   • Identify, address and report hazards, risks and environmental issues
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
7. Set out and prepare sections
   • Confirm and apply setout requirements
   • Identify and record underpinning requirements for adjoining properties and roadways
   • Identify and implement sections and sequence of excavations
   • Check existing shoring system for soundness
   • Set out sections for excavation
   • Identify and protect areas for excavation and surrounding working space requirements
   • Erect barricades and signage
   • Position plant and equipment for excavations
8. Excavate sections
   • Excavate designated sections to the designed depth of footings
   • Install trench and excavation support
9. Construct underpinning
   • Construct underpinning
   • Backfill excavated sections
   • Underpin alternate sections in sequence
   • Clear work area and dispose of or recycle materials
   • Clean, check, maintain and store plant, tools and equipment

Performance Evidence

Evidence is required to be collected that demonstrates a candidate’s competency in this unit. Evidence must be relevant to the roles within this sector’s work operations and satisfy all of the requirements of the performance criteria of this unit and include evidence that the candidate:

locates and applies applicable legislation, documentation, policies and procedures

implements the requirements, procedures and techniques for the safe, effective and efficient completion of underpinning construction including:

using correct drilling and excavation techniques

works effectively with others to undertake and complete the construction of underpinnings that meets all of the required outcomes including:

communicating clearly and concisely with others to receive and clarify work instructions

using a range of communication technique and systems such as signage to advise others of work activity and exclusion zones

demonstrates completion of underpinning construction that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:

identifying and record in writing underpinning requirements for adjoin properties and roadways from site drawing and survey of the surrounding construction

excavating and backfilling the designated sections

conducting construction of underpinning for a minimum of two (2) projects:

one (1) using drilling techniques and;

one (1) using excavation techniques to the required job specifications

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Knowledge Evidence

The candidate must demonstrate knowledge of construction underpinning through:

applying legislative, organisational and site requirements and procedures for:

site and equipment safety requirements

foundation work

civil construction terminology

underpinning techniques

water erosion

using construction principles

interpreting engineering drawings

identifying soil, sand, rock, clay, shale, gravel and silt types and characteristics

identifying equipment types, characteristics, technical capabilities and limitations

applying site isolation and traffic control responsibilities and authorities

interpreting and complying with safety data sheets and materials handling methods

monitoring project quality requirements

preparing and/or implementing JSA/JSEA/safe work method statements

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