Unit of competency Outline

Date retreived
22/07/2026 8:24 AM AWST

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Construct low-profile timber or modular retaining walls

Construct low-profile timber or modular retaining walls

Unit of competency
National Code
AHCLSC207
State Code
ODU85
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
15/02/2022
View on TGA
State Implementation and Classification
Approved Date
31/05/2022
Field of Education
040301 - Building Science And Technology
Original Release Date
31/05/2022
Nominal Hours
30
Description
This unit of competency describes the skills and knowledge required to construct low-profile timber or modular retaining walls in landscape settings, including preparing for work, marking out site, preparing footings, installing wall components and cleaning up site.The unit applies to individuals who construct low-profile timber or modular retaining walls under general supervision with limited autonomy or accountability.No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1. Plan and prepare work
  • 1.1 Read work instructions relating to constructing the retaining wall and confirm with supervisor
  • 1.2 Prepare and use tools and equipment according to supervisor instructions
  • 1.3 Check and confirm quantity and quality of materials according to job plan requirements
  • 1.4 Identify manual handling and workplace health and safety hazards, assess risks and report to supervisor
  • 1.5 Select, fit, use and maintain personal protective equipment (PPE) applicable to the task
  • 1.6 Locate and mark out services
2. Mark out site for retaining wall
  • 2.1 Mark out position of retaining wall according to site plan
  • 2.2 Determine location and depth of excavations according to supervisor instructions
  • 2.3 Establish profiles according to designated tolerances
  • 2.4 Establish survey benchmarks
3. Prepare footings according to industry standards
  • 3.1 Excavate retaining wall foundations to required depth and dimensions according to site plans
  • 3.2 Remove and stockpile soil and waste material to ensure a safe working area
  • 3.3 Locate reinforcing or steps in excavated site and position accordingly
  • 3.4 Position pegs to maintain levels of even depth and horizontal plane to the top of footings
  • 3.5 Place, consolidate and finish footings to determined levels, to ensure coverage of reinforcement
4. Prepare and install retaining wall components
  • 4.1 Prepare and lay out components for installation
  • 4.2 Mark components to be cut to length and shape, and cut to requirements of profiles already established
  • 4.3 Construct base layer of retaining wall to point above the top of drainage media and form weep holes where indicated
  • 4.4 Install protective membrane as specified in site plan
  • 4.5 Install drainage media and material as specified in site plan
  • 4.6 Back-fill and compact fill material behind base of retaining wall
  • 4.7 Construct retaining wall components to required dimensions, profiles and levels as specified on site plan
  • 4.8 Set capping to top of retaining wall to specified levels with tolerance appropriate to style of capping
5. Clean up site and store tools and equipment
  • 5.1 Dispose of or recycle soil and waste material from site
  • 5.2 Store and stack unused construction materials for future re-use
  • 5.3 Clean, maintain and store tools and equipment
  • 5.4 Report work outcomes and malfunctions, faults, wear or damage of tools to supervisor
No information
No information
Replaces
State Code National Code Title Type
BAM73 AHCLSC202 Construct low-profile timber or modular retaining walls Unit of competency