Unit of competency Outline

Date retreived
22/07/2026 10:02 PM 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.

Construct roof gardens

Construct roof gardens

Unit of competency
National Code
AHCGRI401
State Code
OCU08
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
24/12/2020
View on TGA
State Implementation and Classification
Approved Date
21/05/2021
Field of Education
050301 - Horticulture
Original Release Date
21/05/2021
Nominal Hours
100
Description
This unit of competency describes the skills and knowledge required to construct designed roof gardens to comply with regulatory authorities' building regulations, standards and codes, and meet design plans and specifications. The unit applies to individuals who build or install roof gardens on new or existing residential or commercial buildings in consultation with architects, engineers and other building and/or landscape and horticultural professionals. This unit of competency is suitable for individuals dealing with predictable and unpredictable problems and deciding on solutions to a range of complex problems during the building or installation process through research, analysis and consultation.Roof garden installation or construction must meet all regulatory requirements of national, state, territory and local government authorities and building regulations, standards and codes.Licensing, legislative or certification requirements may apply to this unit in some jurisdictions depending on the location of the work and/or plant and equipment used. Users are advised to check with the relevant regulatory authorities.
Notes
Elements and Performance Criteria
1. Plan and prepare
  • 1.1 Interpret roof garden design plans and specifications, check permits and identify and resolve any discrepancies with designer and/or associated specialists if applicable
  • 1.2 Complete job safety and environmental analysis (JSEA) or Safe Work Method Statement (SWMS), identify potential hazards and apply control measures
  • 1.3 Determine job priorities, and sequence job tasks in consultation with others on site
  • 1.4 Calculate material and component quantities and check material availability with suppliers
  • 1.5 Schedule delivery and discuss site access and method of locating material onsite with appropriate persons
  • 1.6 Select plant, equipment and tools, check for serviceability and rectify and report any faults, and confirm required operator certifications, if applicable
  • 1.7 Select, correctly fit and use personal protective equipment (PPE)
  • 1.8 Check delivered materials and components for conformity, and report any discrepancies or damage to appropriate person
2. Construct roof garden
  • 2.1 Establish finished heights, levels and falls from datum
  • 2.2 Confirm waterproofing installation to the specified area by specialist waterproofer using approved materials and methods has been inspected and certified
  • 2.3 Set out and install drainage system, and check for leaks
  • 2.4 Install soil profile, ensuring interface between profile layers is uniform and unbroken
  • 2.5 Consolidate each soil profile layer to reflect the final contour
  • 2.6 Set out and install irrigation system according to specifications
  • 2.7 Plant vegetation according to designer and/or supplier establishment information
  • 2.8 Anchor plants and/or roof garden components as required according to anchoring system design
3. Complete roof garden construction
  • 3.1 Clear the work area by disposing of, reusing or recycling materials
  • 3.2 Clean tools and equipment and check for serviceability and report damage or defects to appropriate person
  • 3.3 Store tools and equipment according to workplace and environmental requirements
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