Unit of competency details

AHCARB311 - Tie, dress, set and finish arborist knots (Release 1)

Summary

Releases:
ReleaseStatusRelease date
1 1 (this release)Current 27/Jun/2016

Usage recommendation:
Current

Training packages that include this unit

Classifications

SchemeCodeClassification value
ASCED Module/Unit of Competency Field of Education Identifier 050301 Horticulture  

Classification history

SchemeCodeClassification valueStart dateEnd date
ASCED Module/Unit of Competency Field of Education Identifier 050301 Horticulture  14/Oct/2016 
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Unit Of competency

Modification History

Release

TP Version

Comment

1

AHCv1.0

Initial release

Application

This unit of competency describes the skills and knowledge required to tie, dress, set and finish arborist knots, hitches and bends.

This unit applies to ground based workers undertake defined activities with appropriate methods, tools and information, work in a structured context , apply knowledge and skills to demonstrate limited autonomy and judgement, and provide solutions to a limited range of predictable problems. Work is implemented with low risk work procedures and to comply with Safe Work Method Statement documentation.

Licensing, legislative, regulatory, or certification requirements apply to this unit in some states and territories at the time of publication, and may differ according to jurisdiction. Specific determination should be sought through the relevant State or Territory. Works involving this unit of competency may be subject to local tree protection and preservation laws, and the relevant content of applicable Australian Standards.

Pre-requisite Unit

Nil.

Unit Sector

Arboriculture (ARB)

Elements and Performance Criteria

Element

Performance criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1. Assist in preparation of work site

1.1 Undertake a site-specific risk assessment by identifying work health and safety hazards and assessing risk

1.2 Confirm first aid and emergency equipment and procedures applicable to tree work

1.3 Carry out pre-operational and safety checks on ropes and equipment

1.4 Select and use appropriate personal protective equipment

1.5 Record and implement work health, safety, site, environmental and traffic control measures

2. Tie, dress and set arborist knots

2.1 Communicate with work team during operations using voice, hand and whistle signals

2.2 Determine work application for knot for ground-based, aerial, rigging and climbing work tasks

2.3 Determine appropriate knot for locking and non-locking attributes, strength, impact on rope strength, loosening and slippage

2.4 Determine loss of rope strength in using selected knot

2.5 Determine appropriate rope for knot application

2.6 Determine requirements for secondary knots and stopper knots

2.7 Tie rope to form intended knot

2.8 Leave appropriate tail length approximately five times diameter of rope

2.9 Dress knot to align all parts of knot

2.10 Adjust knot to appropriate proportions

2.11 Set knot to tighten and load knot prior to use

2.12 Finish knot with selected stopper knot, tucked tail or suitable tail length

3. Inspect and use knot

3.1 Inspect completed knot

3.2 Check knot for correctness of assembly

3.3 Confirm knot for correct work application

3.4 Maintain effective communication with work team

3.5 Install and use knot in work application

3.6 Untie knot at completion of work task

4. Complete knot operations

4.1 Clean and check ropes

4.2 Report and tag faulty or worn ropes

4.3 Clean and store personal protective equipment

Foundation Skills

Foundation Skills essential to performance are explicit in the performance criteria of this unit of competency.

Range of Conditions

Ground-based Rigging applications must include knowledge of:

  • Alpine butterfly knot
  • Bowline on the bight
  • Cows hitch with better half
  • Clove hitch + two half hitches
  • Half hitch pre knot
  • Klemheist friction knot
  • Marline pre knot
  • Marline spike hitch
  • Riggers knot + two half hitches
  • Running bowline
  • Sheet bend
  • Slippery sheet bend
  • Timber hitch
  • Zeppelin bend

Above Ground applications must include knowledge of:

  • Scaffold knot
  • Double Fishermans Knot/Prusik loop
  • Girth Hitch
  • English Prusik Knot
  • Marlin Spike
  • Clove Hitch
  • Double Overhand Stopper Knot
  • Sheet bend
  • Slippery Sheet Bend
  • Bowline Knot
  • Running Bowline Knot

Aerial Rigging applications must include knowledge of:

  • Cows hitch
  • Riggers knot + two half hitches
  • Clove hitch + two half hitches
  • Alpine butterfly knot
  • Half hitch pre knot
  • Marline pre knot
  • Marline spike hitch
  • Zeppelin bend
  • Running bowline
  • Bowline on the bight
  • Rolling hitch
  • Timber hitch
  • Sheet bend
  • Slippery sheet bend

Unit Mapping Information

New unit - no equivalent.

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.education.gov.au/Pages/TrainingDocs.aspx?q=c6399549-9c62-4a5e-bf1a-524b2322cf72

 

Assessment requirements

Modification History

Release

TP Version

Comment

1

AHCv1.0

Initial release

Performance Evidence

The candidate must be assessed on their ability to integrate and apply the performance requirements of this unit in a workplace setting. Performance must be demonstrated consistently over time and in a suitable range of contexts.

The candidate must provide evidence for and demonstrate:

  • undertaking a site-specific risk assessment by identifying work health and safety hazards and assessing risk
  • confirming first aid and emergency equipment and procedures applicable to tree work
  • selecting and using appropriate personal protective equipment
  • recording and implementing work health, safety, site, environmental and traffic control measures
  • communicating with work team during operations using voice, hand and whistle signals
  • determining work application for:
  • ground-based knots
  • aerial knots
  • rigging knots and
  • climbing knots
  • determining appropriate knot for locking and non-locking attributes, strength, impact on rope strength, loosening and slippage
  • determining loss of rope strength using selected knot
  • determining appropriate rope for knot application
  • determining requirements for secondary knots and stopper knots
  • determining appropriate rope used for knot application
  • tying knot to form intended knot
  • leaving appropriate tail length approximately five times diameter of rope
  • dressing knot to align all parts of knot
  • setting knot to tighten and load knot prior to use
  • finishing knot with selected stopper knot as required
  • inspecting completed knot
  • checking knot for correctness of assembly
  • confirming knot for correct work application
  • maintaining effective communication with work team
  • installing and using knot in work application
  • untying knot at completion of work task
  • clean and check ropes
  • reporting and tagging faulty or worn ropes
  • cleaning and storing personal protective equipment.

Knowledge Evidence

The candidate must demonstrate knowledge of:

  • site-specific risk assessment
  • first aid and emergency equipment and procedures
  • personal protective equipment
  • work health, safety, site, environmental and traffic control measures
  • voice, hand and whistle signals
  • work applications for knots
  • knots for ground-based rigging tasks
  • knots for aerial rigging tasks
  • knots for climbing work tasks
  • determination of appropriate knot by evaluation of knot attributes:
  • locking and non-locking attributes
  • impact on rope strength
  • loosening and
  • slippage
  • determining loss of rope strength using selected knot
  • determination of appropriate rope for knot application
  • knot tying
  • intended knot
  • tail length
  • diameter of rope
  • alignment of knot parts
  • knot setting
  • knot tightening and loading
  • stopper knot
  • knot finishing
  • correctness of assembly and use in application
  • inspection, installation and use of knots
  • effective work team communications
  • tagging system
  • checking and cleaning ropes.

Assessment Conditions

It is an industry requirement for the assessment of the knots appropriate to the work application as listed in the Range of Conditions section of this unit of competency.

Assessment must be demonstrated consistently over time in a suitable range of contexts and have a productivity-based outcome. No single assessment event or report is sufficient to achieve competency in this unit.

Assessment may be conducted in a simulated or real work environment, however determination of competency requires the application of work practices under work conditions.

The mandatory equipment and materials used to gather evidence for assessment include:

  • equipment:
  • static and dynamic rope kit
  • personal protective equipment (PPE)
  • first aid and emergency kit
  • traffic management kit
  • materials:
  • knot identification form
  • hazard identification and risk control form
  • equipment and PPE check form
  • emergency preparation form
  • work communications form

Assessors must satisfy current standards for RTOs in the assessment of arboriculture units of competency.

Assessment must be conducted only by persons who have:

  • arboriculture vocational competencies at least to the level being assessed
  • current arboriculture industry skills directly relevant to the unit of competency being assessed

Links

Companion Volume implementation guides are found in VETNet - https://vetnet.education.gov.au/Pages/TrainingDocs.aspx?q=c6399549-9c62-4a5e-bf1a-524b2322cf72

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