Elements and Performance Criteria

Wire frame modelling techniques
Wire frame modelling techniques may include:
setting and using work planes
shifting and working with coordinate system
moving through 3-D space
changing ‘Z’ depth
construction techniques
wire frame editing
Surface modelling techniques
Surface modelling techniques may include:
definition and use of surface primitives
box, cylinder, cone, torus, wedge and editing surface primitives
Surface types
Surface types may include:
geometric, freeform and derived surfaces
draft, revolved, ruled, lofted, swept, coons, offset trimmed, fillet, blend, parametric and Non-Uniform Rational B-Spline (NURBS) surfaces
surface normals and reversing
Rendering techniques
Rendering techniques may include:
rendering types and preferences
render lighting techniques
views and scenes
Appropriate personnel
Appropriate personnel may include:
supervisor
leading hand
foreman
manager
site engineer
trainer
mentor
teacher
team member
OHS requirements
OHS requirements may include:
legislation
personal protective equipment
material safety management systems
hazardous substances and dangerous goods code
awards provisions
safe work practices
Environmental requirements
Environmental requirements may refer to:
liquid waste
solid waste
gas, fume, vapour, and smoke emissions, including fugitive emissions
excessive energy and water use
excessive noise
Resource requirements
Resource requirements may include:
computer software
stationary
software reference documentation
reference texts
consumables
computer
printing equipment

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 apply surface modelling techniques to 3-D models using CAD systems.
Critical aspects for assessment and evidence required to demonstrate competency in 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.
Specifically the candidate must be able to:
work within typical site/teamwork structures and methods
apply worksite communication procedures
comply with organisational policies and procedures, including quality requirements
participate in work meetings
comply with quality requirements
use industry terminology
apply appropriate safety procedures
select and use 3-D CAD software to apply surface modelling techniques that meet design specifications.
Context of and specific resources for assessment
This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. 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.
This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with creating 3-D models using CAD systems or other units requiring the exercise of the skills and knowledge covered by this unit.
Method of assessment
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.