Construct low-profile timber or modular retaining walls

Unit of competency Outline

Date retreived
23/07/2026 7:07 AM AWST

Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.

Unit of competency

National Code
AHCLSC202

State Code
BAM73

TGA Status
Replaced

DTWD Status
Replaced

Current Release Number
1.00

Current Release Date
27/06/2016

View on TGA

State Implementation and Classification

Approved Date

12/01/2017

Field of Education

040301 - Building Science And Technology

Original Release Date

12/01/2017

Nominal Hours

Description

This unit of competency describes the skills and knowledge required to construct low-profile timber or modular retaining walls in landscape settings. This unit applies to individuals who work under general supervision and exercise limited autonomy with some accountability for their own work. They undertake defined activities and work in a structured context.No occupational licensing, legislative or certification requirements are known to 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 instructions with the supervisor
1.2 Prepare tools and equipment and use according to the supervisor's instructions
1.3 Identify and report to supervisor any manual handling and other work health and safety hazards
1.4 Select, use and maintain personal protective equipment (PPE) and clothing
1.5 Check the quantity and quality of materials to make sure they conform to the requirements of the job plans
1.6 Locate and mark out services

2. Mark out site for retaining wall

2.1 Mark out the position of the retaining wall according to site plans
2.2 Determine the location and depth of excavations
2.3 Establish profiles to conform to the designated tolerances
2.4 Establish survey benchmarks

3. Prepare footings according to industry standards

3.1 Excavate foundations for the retaining wall to the required depth and dimensions as designated on the site plans
3.2 Remove soil and waste material and stockpile to ensure a safe working area
3.3 Locate reinforcing or steps in the 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 as necessary

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 the requirements of profiles already established
4.3 Install drainage media
4.4 Construct base layer of retaining wall to a point above the top of the drainage media and form weep holes where indicated
4.5 Back-fill and compact fill material behind base of retaining wall
4.6 Construct retaining wall components to required dimensions, profiles and levels as specified on the site plans
4.7 Set capping to top of retaining wall to specified levels with a tolerance appropriate to the style of capping

5. Clean up site and store tools and equipment

5.1 Dispose of or recycle soil and waste material from the site to minimise damage to the environment
5.2 Store and stack unused construction materials for future re-use
5.3 Clean and store all tools and equipment

No information

Replaces

State Code	National Code	Title	Type
D6911	AHCLSC202A	Construct low-profile timber or modular retaining walls	Unit of competency

Replaced By

State Code	National Code	Title	Type
ODU85	AHCLSC207	Construct low-profile timber or modular retaining walls	Unit of competency

State Code	National Code	Title	Type
BDE6	AHC20416	Certificate II in Horticulture	Qualification
BDE7	AHC21616	Certificate II in Landscaping	Qualification