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

A person who demonstrates competency in this unit must be able to mark out general fabrications using geometric development. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently apply the skills covered in this unit of competency in new and different workplace situations and contexts. Critical aspects of assessment and evidence include:

examining detailed drawings for fabrication requirements and specifications including materials, measurements and tolerances, joining methods, standards and code requirements

correctly calculating allowances for fabrication and assembly including shrinkage, thickness and inside/outside measurements

correctly establishing and marking datum points

selecting and using parallel line, radial line and triangulation development methods with minimum material wastage with accurate dimensions and allowances

accurately producing templates.

Context of and specific resources for assessment

This unit has been developed to support training in and recognition of trade level competency in marking out using geometric development as applied to a sheet metal or metal fabrication environment. Assessment should emphasise a workplace context and procedures found in the candidate's workplace.

The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

Method of assessment

Typically, persons engaged in Engineering Tradesperson - Fabrication work are required to apply their geometric development skills and techniques across a range of jobs and specifications.

A single assessment event is not appropriate. On the job assessment should be included as part of the assessment process wherever possible. Where assessment occurs off the job, judgement must consider evidence of the candidate's performance in a productive work environment that includes a sufficient range of appropriate tasks and materials to cover the scope of application for this unit.

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency.

The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with applying geometric development or other units requiring the exercise of the skills and knowledge covered by this unit.

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Required skills

Required skills include:

performing geometric calculations

carrying out geometric development

establishing datum points

producing templates to specification

labelling and storing templates

developing patterns

making fabrication and assembly allowances

determining material and component quantities

minimising material wastage

Required knowledge

Required knowledge includes:

specifications of work

tools and equipment

development preparation

datum points

materials used for the preparation of templates

manufacturing allowance considerations

template development, labelling, identification and storage requirements

development methods and applications

fabrication and assembly allowances

sources of data on fabrication

relevant standards and codes

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Template material

Template material may include:

steel plate

perspex

timber

cardboard

paper

Storage procedures

Storage procedures may include:

labelling

identification (e.g. template lofts)

Development methods

Development methods may include:

parallel line

radial line

triangulation

Allowances

Allowances may include:

thickness

bend

pitch

angle

circumference

perimeter

Standards/codes and symbols

All work carried out in accordance with legislative and regulatory requirements