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Elements and Performance Criteria

1. Prepare for pressing
   • Review work order and construction plans and where required check with appropriate personnel.
   • Identify and obtain type and quantity of assembly material and hardware.
   • Select appropriate personal protective and other equipment and check for operational effectiveness.
2. Set up components
   • Use equipment in line with organisational safety procedures, manufacturer’s instructions and environmental protection practices.
   • Select timber components from pre-cut material in line with cutting list.
   • Position and clamp components in press, with allowable faults, joins and grain in line with construction standards and grading rules.
   • Set components to include camber adjustments, overhang and other design requirements.
   • Identify defective components, dispose of or recycle in line with environmental protection practices.
   • Fasten components to maintain temporary alignment during setup.
   • Position and install hardware on joints ready for pressing.
3. Press trusses
   • Complete pre start-up equipment checks to ensure operational effectiveness.
   • Set and adjust press cycle times and pressures to meet production requirements.
   • Check pressed trusses for abnormalities and assembly faults in line with organisational procedures.
   • Complete unload and reload cycles.
   • Assess pressed and finished trusses regularly; action changes to assembly and pressing processes as required.
   • Dispose of defective pressed trusses in line with environmental protection practices.
4. Prepare products for despatch and report
   • Check finished product for quality and label in line with work order.
   • Remove components from jigs and safely stack in designated location.
   • Strap, pack and label finished products ready for transportation.
   • Avoid wastage of strapping and packaging materials and maximise use of recycled materials.
   • Record and report production outcomes and equipment faults to appropriate personnel.

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:

set up components and press timber trusses, in line with an individual work order and construction plan for each job prescribing different dimensions and numbers of trusses

for each of the above jobs, strap, pack and label completed products ready for transportation.

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Knowledge Evidence

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

quality requirements, at a basic level of understanding, of national building codes and standards

environmental protection practices for assembling and pressing timber trusses:

reducing water and energy use

disposing of, recycling and reusing timber and other waste

typical timber defects and how these affect ability to produce a quality finished product:

warp

wane

cupping

shakes

insect defects

knots

resin pockets

typical flow of material supply in and out of the truss pressing area

typical truss assembly sequences and range of techniques used to press trusses

range of industry standard lengths, cross sections and tolerances and applicable terminology

typical assembly and pressing faults triggering correction to ensure product quality:

incorrectly positioned joints

timber splits from nailing

incorrectly positioned hardware

purpose, features and operation of equipment used to assemble and press timber trusses:

truss presses:

roller press

platen press

C-clamp press

assembly equipment:

measuring equipment

assembly jigs

drills

staple guns

nail guns

compressor or compressed air supply

marking equipment

strapping equipment

appropriate range of cycle times and pressures used to press trusses until structurally ready

purpose, features and use of assembly componentry

organisational procedures specific to operating press trusses:

workplace health and safety with particular emphasis on on equipment lock out and use of personal protective equipment

communication reporting lines

maintaining construction standards

recording and reporting production outcomes and equipment faults

labelling products for identification and transportation.

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