Unit of competency Outline

Date retreived
22/07/2026 3:20 PM AWST

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Dismantle trees

Dismantle trees

Unit of competency
National Code
AHCARB317
State Code
OBV39
TGA Status
Current
DTWD Status
Approved
Current Release Number
1.00
Current Release Date
26/08/2020
View on TGA
State Implementation and Classification
Approved Date
13/11/2020
Field of Education
050301 - Horticulture
Original Release Date
13/11/2020
Nominal Hours
115
Description
This unit of competency describes the skills and knowledge required to dismantle trees in close proximity to structures and other assets and in difficult or hazardous circumstances using a specialised range of methods, tools, equipment and materials and requiring the application of extensive arboricultural knowledge.The unit applies to individuals who work in arboriculture under broad direction and take responsibility for their own work. They use discretion and judgement in the selection, allocation and use of available resources and for solving problems. The arboriculture industry requires that all tree dismantling work is undertaken according to preferred industry practices (as outlined in the Companion Volume).Legislation, regulations and by-laws relating to the treatment and removal of trees apply in some states and territories.
Notes
Elements and Performance Criteria
1. Prepare for tree removal
  • 1.1 Determine access to site and confirm approval for works to commence
  • 1.2 Confirm site preparations, including notification of stakeholders
  • 1.3 Undertake a site-specific job safety analysis (JSA), and record and implement site-specific control measures according to workplace safety procedures
  • 1.4 Inspect tree to identify structural defects and appropriate removal methods
  • 1.5 Determine a dismantling strategy identifying potential drop or lowering zones and providing safety zones for load, tools and equipment
  • 1.6 Review dismantling strategy with work crew and adjust according to feedback
  • 1.7 Protect property and vegetation assets in the work zone from potential damage
  • 1.8 Confirm availability of emergency response resources and safety procedures
  • 1.9 Select and prepare tools, equipment and machinery and conduct pre-operation and safety checks
  • 1.10 Select, check and use personal protective equipment
2. Design and prepare rigging system
  • 2.1 Design rigging system according to dismantling strategy
  • 2.2 Select appropriate anchor and attachment points
  • 2.3 Estimate force applied to tree structure and to rigging equipment during planned rigging operations
  • 2.4 Design rigging system to allow for load, impact of force and structural integrity of tree
  • 2.5 Consider breaking strength, working load limits and safety factor of equipment in use
  • 2.6 Discuss and confirm rigging system with work team
  • 2.7 Select rigging equipment, inspect for defects, and repair, replace or remove from service damaged components according to workplace safety procedures
  • 2.8 Assemble and configure rigging equipment into selected rigging system and install at anchor point
3. Implement dismantling of trees
  • 3.1 Coordinate and sequence work with work team during operations using communication methods agreed with work team for site environment
  • 3.2 Access tree crown safely according to dismantling strategy and workplace safety procedures
  • 3.3 Select and apply rigging or dismantling techniques in correct sequence to dismantle tree according to determined dismantling strategy
  • 3.4 Plan each cut and install rigging equipment according to rigging system design and manufacturer instructions
  • 3.5 Check rigging assembly is correctly installed and safe to use prior to performing cut
  • 3.6 Accurately apply a selection of cuts to achieve directional felling and controlled rigging and dismantling of the tree crown and trunk
  • 3.7 Perform cuts from a safe and secure work position using industry standard cutting techniques
  • 3.8 Monitor and adjust dismantling process as required to maintain a safe and efficient workflow
  • 3.9 Dismantle tree by sections into drop zone according to industry standards
4. Complete tree removal activities
  • 4.1 Clean, check, maintain and store tools and equipment according to workplace procedures
  • 4.2 Maintain records according to workplace procedures
  • 4.3 Report completion of tree removal to stakeholder
No information
No information
Replaces
State Code National Code Title Type
BAR99 AHCARB305 Dismantle trees Unit of competency
BAL77 AHCARB310 Perform aerial rigging Unit of competency
BAR22 AHCARB311 Tie, dress, set and finish arborist knots Unit of competency
State Code National Code Title Type
BFG5 AHC30820 Certificate III in Arboriculture Qualification
BJR6 AHC30824 Certificate III in Arboriculture Qualification