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Elements and Performance Criteria

1. Prepare for timber selection
   • Review workplace and quality procedures for timber selection.
   • Conduct visual inspection of products for suitability.
   • Review and check product specifications.
2. Evaluate selected timber
   • Assess growth and durability of the timber.
   • Assess species, timber structure, features and characteristics of timber.
   • Check moisture content of selected timber and ensure it meets production requirements.
   • Identify density and working properties of timber to ensure they meet production requirements.
   • Identify faults and features in the timber.
   • Select sawing patterns that best suit the selected timber.
3. Report on timber selection
   • Assess timber for quality and specification requirements.
   • Prepare timber for dispatch ensuring that damage is prevented or minimized.
   • Follow organizational procedures to document timber assessment outcomes.
   • Record and report on timber selection procedures and identify any problems with the process.

Range Statement

Not Applicable

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Performance Evidence

A person demonstrating competency in this unit must satisfy all of the elements, performance criteria and foundation skills of this unit. If a specific volume or frequency is not stated below, then evidence must be provided that the following requirements have been performed on at least one occasion:

follow organisational policies and procedures for selecting timber

undertake visual inspection and identify: defects, contamination, timber colours, insect attack, surface finishes, loose surfaces, bubbles, holes, breakages, machine caused defects

assess timber for growth patterns using appropriate methods including make-up of a tree: bark (cortex), phloem, cambium layer, sapwood (xylem), heartwood (truewood), pith (medulla), medullary rays, earlywood, latewood, growth rings, cellulose, hemicelluloses, lignin extractives

assess timber for durability: strength, hardness and rating for use, classification and measurement

assess timber structures: hardwood (pored wood) or softwood (non-pored wood) and cell structured timber, including vessels, fibres, ray cells, pits, tracheids, texture, seasoning methods

assess timber characteristics: colour, density, texture, grain, figure, qualities, uses

identify faults and features of timber: bow, spring, twist, warp, wane, cupping, shakes, insect defects, fungi, knots, resin pockets, wild grain, sloping grain

measure moisture content of timber

prepare products relating to a customer order via various means of transport

record and report on outcomes of timber selection.

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Knowledge Evidence

A person competent in this unit must be able to demonstrate knowledge of:

organisational policies and procedures for selecting timber

defects in timber: contamination, timber colours, insect attack, surface finishes, loose surfaces, bubbles, holes, breakages, machine caused defects

procedures for assessing timber for growth, durability, cell structure and characteristics

the working properties of timber: timber shrinkage, effects of light, density and deterioration of the timber, compressive and tensile stresses, modulus of elasticity, modulus of rupture, deformation, creep, surface hardness

faults and features of timber

acceptable moisture content of timber

sawing patterns (live-sawn, back sawn, quarter sawn) and their suitability for different timber.

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