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Elements and Performance Criteria
Performance Evidence
Knowledge Evidence
An individual must be able to demonstrate the knowledge required to perform the tasks outlined in the elements and performance criteria of this unit. This includes knowledge of:
preferred industry practices (as outlined in the Companion Volume) for tree support systemsthe effect of pruning on tree growth, habit and formtree anatomy and tree physiology related to tree support systems, including:pruning techniques appropriate to tree species and their responsenatural habit and form of treesvisual tree assessmenttree defects and tree support system solutionstree support systems principles and techniques suited to tree species, including:steel cablingsynthetic cablingbracingimpact of tree support system on trees, including:the impact on the tree's natural range of movement the impact on the tree's strategy of flexibilitythe impact on the tree's formation of reactive growthtree support system materials, tools and equipment, including:preparation of steel cabling systems and terminations, including eyes, swaging, wire whippingcomponents and preparation of synthetic cabling systems hardware, including installation requirements for eye bolts, lag hooks, wire stops and gripscable types and sizes, tensile strength and selection criteria as related to arborist specificationspreparation of bracing components, including types of rod, threading, terminations and tensile strengthcable tension and tensioning methodsfinishing techniques of cables for aesthetics and functionfinishing techniques of bracing for safety, aesthetics and functionchecks and adjustments to installed systems over timeidentification of workplace health and safety hazards, risk assessment and risk control applicationselection of suitable PPEcompleting a job safety analysis (JSA) first aid and rescue personnel, equipment and procedures applicable to tree workmonitoring and managing above-ground hazardselectrical safetyprinciples of compartmentalisation of decay in trees (CODIT) in relation to the installation of cables and bracinghygiene practices and biosecurity when cable bracing, including:reasons for managing hygienebiosecurity principles and proceduresrecord keeping and reporting procedures for cable bracing.