Unit of competency Outline
Date retreived
22/07/2026 2:42 PM AWST
22/07/2026 2:42 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.
Perform aerial rigging
Perform aerial rigging
Unit of competency
National Code
AHCARB310A
AHCARB310A
State Code
D6664
D6664
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
05/12/2011
Field of Education
040329 - Scaffolding And Rigging
Original Release Date
05/12/2011
Nominal Hours
90
Description
This unit of competency covers the process of rigging and defines the standard required to: design and implement a rigging system; use established and documented methods of rigging; perform rigging operations and communicate effectively with work crew.
Notes
Elements and Performance Criteria
1. Prepare work site
- 1.1. The location of worksite and location of the correct tree is confirmed as per the scope of works.
- 1.2. Required site permits and licences are obtained.
- 1.3. Tree is inspected for structural defects.
- 1.4. Site hazards are identified, risks assessed and suitable controls implemented.
- 1.5. The work zone is confirmed with the work crew and is monitored.
- 1.6. Traffic management plans for the work site are implemented.
- 1.7. Communications are initiated, received and confirmed as an ongoing process.
2. Prepare rigging
- 2.1. Rigging method is determined and communicated to work crew.
- 2.2. Rigging method confirms the risk controls selected in accordance with established and documented low risk work methods.
- 2.3. Appropriate rigging equipment is selected.
- 2.4. Rigging equipment is inspected for equipment defects assembled and installed.
3. Design the rigging system
- 3.1. The load limit of the rigging system is determined.
- 3.2. Appropriate anchor and attachment points are selected.
- 3.3. Load and balance calculations are performed.
- 3.4. The impact of force under normal/failure conditions is determined and a safety factor is applied.
- 3.5. Rigging system is designed to allow for the load and impact of the forces.
- 3.6. Rigging system is communicated to work crew.
4. Perform rigging operations
- 4.1. Effective communications are maintained between the work crew during the sequence of the rigging process.
- 4.2. Rigging is attached.
- 4.3. Appropriate knots are used where required.
- 4.4. Rigging system is monitored and adjusted in accordance with environmental conditions.
- 4.5. Load is tensioned and tested.
- 4.6. Load is controlled and raised, lowered or re-directed.
- 4.7. The appropriate components of the rigging system are retrieved.
5. Complete tree rigging operations
- 5.1. Load frequency and size matches the process capacity of the ground crew.
- 5.2. Rigging operations are completed as per scope of works.
- 5.3. Tools, equipment and machinery are cleaned, checked, and replaced if faulty or worn, and stored.
RANGE STATEMENT
The range statement relates to the unit of competency as a whole.
Trees include:
hardwood
softwood
palms and palm-like
trees that are alive, dead, single or multi-stemmed, leaning or straight.
Structural defects may include:
cracks
splits
cavities
decay
inclusions.
Site hazards may include:
uneven/unstable terrain
high risk trees and tree parts
overhead and underground services
excavations
traffic
structures
hazardous materials
fires
insects and animals
other personnel and machinery.
Traffic may include:
pedestrian
vehicle.
Communication may include:
voice communications
whistles
hand signals.
Work zone may include:
the exclusion zone
safe drop zone
safe fall zone
traffic management zone
asset management zone
the area under the load
the area that the load is directed to.
Rigging method may include:
simple rope
taut line
speed line
tag-pull line
lowering
raising
cradling
tip or butt lowering
false crotch.
Rigging equipment may include:
ropes including aspects of rope such as:
materials
construction
diameter
limits
terminations
karabiners
pulleys
slings
shackles
rapids.
Slings may be:
spliced
sewn
swaged
adjustable
continuous
fixed length.
Slinging configurations could include choke or basket.
Equipment defects may include:
signs of:
wear
melting
burning
stretching
cracking
incompatibility
overload failure
equipment that is:
cut
bent
broken
faulty.
Rigging system includes:
the assembly of all the component parts of rigging equipment. This may include mechanical advantage and friction from tree or friction devices or other fixed objects.
Anchor and attachment points may include:
a fork
a false crotch made from a sling and pulley
a cambium saver.
Load may include:
tree
tree parts
rigging equipment or tools.
Knots may include:
bowline
running bowline
bowline on a bight
blood knot
tautline
sheet bend
Prussik
figure 8
friction
alpine
timber hitch
clove hitch
half hitch.
Environmental conditions may include:
the range of variations in weather such as wind speed and direction.
The range statement relates to the unit of competency as a whole.
Trees include:
hardwood
softwood
palms and palm-like
trees that are alive, dead, single or multi-stemmed, leaning or straight.
Structural defects may include:
cracks
splits
cavities
decay
inclusions.
Site hazards may include:
uneven/unstable terrain
high risk trees and tree parts
overhead and underground services
excavations
traffic
structures
hazardous materials
fires
insects and animals
other personnel and machinery.
Traffic may include:
pedestrian
vehicle.
Communication may include:
voice communications
whistles
hand signals.
Work zone may include:
the exclusion zone
safe drop zone
safe fall zone
traffic management zone
asset management zone
the area under the load
the area that the load is directed to.
Rigging method may include:
simple rope
taut line
speed line
tag-pull line
lowering
raising
cradling
tip or butt lowering
false crotch.
Rigging equipment may include:
ropes including aspects of rope such as:
materials
construction
diameter
limits
terminations
karabiners
pulleys
slings
shackles
rapids.
Slings may be:
spliced
sewn
swaged
adjustable
continuous
fixed length.
Slinging configurations could include choke or basket.
Equipment defects may include:
signs of:
wear
melting
burning
stretching
cracking
incompatibility
overload failure
equipment that is:
cut
bent
broken
faulty.
Rigging system includes:
the assembly of all the component parts of rigging equipment. This may include mechanical advantage and friction from tree or friction devices or other fixed objects.
Anchor and attachment points may include:
a fork
a false crotch made from a sling and pulley
a cambium saver.
Load may include:
tree
tree parts
rigging equipment or tools.
Knots may include:
bowline
running bowline
bowline on a bight
blood knot
tautline
sheet bend
Prussik
figure 8
friction
alpine
timber hitch
clove hitch
half hitch.
Environmental conditions may include:
the range of variations in weather such as wind speed and direction.
EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
Overview of assessment
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:
design and implement a rigging system;
use established and documented methods of rigging;
perform rigging operations and
communicate effectively with work crew.
Context of and specific resources for assessment
Competency requires the application of work practices under work conditions. Selection and use of resources for some work sites may differ due to the regional or enterprise circumstances. There is an industry expectation for refresher training and assessment.
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
Overview of assessment
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competency in this unit must be relevant to workplace operations and satisfy holistically all of the requirements of the performance criteria and required skills and knowledge and include achievement of the following:
design and implement a rigging system;
use established and documented methods of rigging;
perform rigging operations and
communicate effectively with work crew.
Context of and specific resources for assessment
Competency requires the application of work practices under work conditions. Selection and use of resources for some work sites may differ due to the regional or enterprise circumstances. There is an industry expectation for refresher training and assessment.
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| BAL77 | AHCARB310 | Perform aerial rigging | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| D474 | AHC30810 | Certificate III in Arboriculture | Qualification |