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Elements and Performance Criteria

1. Determine sketch requirements
   • Determine purpose, scope and presentation context for sketch, and the information needs of the audience
   • Identify key features, dimensions and orientation, structures, services and features for inclusion
   • Obtain any additional information required
   • Determine suitable sketching techniques and select and prepare materials
   • Access, interpret and apply compliance or safety procedures relevant to the work activity

Required Skills

Required skills

Required skills include literacy skills sufficient to read product safety labels and instructions and to prepare sketches for presentation numeracy skills sufficient to determine layout issues and to deal with scaling applying spatial principles to achieve scale and proportion selecting correct media and graded pencils to produce a freehand sketch of components applying freehand drawing techniques and conventions in the production of sketches in pictorial orthographic and sectional views

Required knowledge

Required knowledge includes general knowledge of the elements and principles of design and their specific application to drawing general knowledge of different approaches to drawing techniques methods and principles of technical drawing used in descriptive geometry awareness of copyright and intellectual property issues and legislation in relation to drawing environmental and occupational health and safety OHS issues associated with the tools and materials used for drawing quality assurance procedures principles of plane geometry geometric shapes plane geometry geometric construction line types during construction sketch construction pictorial axes pictorial angles pictorial lines nonpictorial lines pictorial circles and arcs four centre method ordinate method sectioning pictorial shapes pictorial drawing isometric oblique cabinet and cavalier perspective dimensioning requirements and techniques

Evidence Required

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 produce freehand sketches to communicate or illustrate subject for further drafting work
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 siteteamwork structures and methods apply worksite communication procedures comply with organisational policies and procedures including quality requirements comply with quality requirements use industry terminology apply appropriate safety procedures produce freehand orthogonal sketches and sectional views with information required to inform drawing work
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 Where applicable reasonable adjustment must be made to work environments and training situations to accommodate ethnicity age gender demographics and disability Access must be provided to appropriate learning andor assessment support when required Where applicable physical resources should include equipment modified for people with disabilities This unit could be assessed in conjunction with any other units addressing the safety quality communication materials handling recording and reporting associated with drafting 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 supervisors 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

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Range Statement

Key features	Key features may include: shape proposed subject existing structures services dimensions types of structure shape of structure type of construction types of fasteners layout service requirements location of plant and machinery vertical and horizontal measurements
Orientation	Orientation may include: relationship to the north compass point location of other subjects relationship to other subjects
Services	Services may include: drainage sewerage gas telephone and cable water electricity air conditioning and ventilation heating and cooling
Additional information	Additional information may include: measurements and dimensions design specifications material
Drawing materials	Drawing materials may include: pen and ink graphite pencils graph paper cartridge paper tracing paper
Standard drawing conventions	Standard drawing conventions may include: use of correct sectioning technique identification of cutting plane accurate line types appropriate view positions to the recognised drawing convention use of correct symbols use of correct dimensioning technique provision of suitable number of views use of correct proportions neat presentation
Construction techniques	Construction techniques may include: use of parallel lines bisection of lines, angles and arcs equal division of lines construction of angles at 90, 45, 30, 60, 75 and 15 degrees construction of a hexagon sketching arcs tangential to two lines sketching arcs tangential to two other arcs, internally and externally sketching an arc tangential to a straight line and another arc determining and indicating tangent points
Drawing techniques	Drawing techniques may include: orthogonal projection: first angle projection third angle projection projection symbol preferred system of projection in Australia number of views relationship of views sheet format: borders and title blocks application of projection symbol drawing sheets and sizes lettering styles Australian standards dimensioning: unidirectional dimensioning aligned dimensioning projection and dimension lines arrow heads dimension placement sectioning: types of sections required section views placement of views cutting planes labelling of cutting planes and section views

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