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 use interpret historical detail drawings and blueprints, restore or maintain, as required, and complete drawing to Australian Standard (AS) 1100.101–1992 Technical drawing – General principles, using CAD tools.

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

interpret work and specifications and use reference material to obtain required information for drawing work

produce a detailed engineering drawing to AS 1100.101–1992 Technical drawing – General principles, and according to work requirements

use CAD software.

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 and/or 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, 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.

Required skills

Required skills include:

literacy skills sufficient to read and interpret instructions and specifications for drawings work

obtaining all relevant job requirements, data/information and specifications necessary to produce the drawing in accordance with workplace procedures

planning and sequencing operations

checking and clarifying task-related information

using computer technologies and navigating software

numeracy skills sufficient to interpret technical information and conduct mathematical problem solving as required in the scope of this unit

applying spatial principles to achieve scale and proportion

applying manual drawing and sketching techniques including correct use of lines, angles and curves, symbols and drawing conventions

using manual drafting equipment appropriate to the drawing and chosen restoration method, including:

t-square

drafting board

instruments

appropriate pens, inks, paper and pencils

recording completed drawings in accordance with standard operating procedures

treating, handling and storing the approved drawings in accordance with standard operating procedures

Required knowledge

Required knowledge includes:

general knowledge of different approaches to drawing and historical methods used, including:

symbols and drawing presentation

measurement and tolerancing conventions

drawing conventions and construction techniques

use of drawing materials

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

drawing construction:

four centre method

ordinate method

sectioning isometric shapes

dimensions and notations

line types

requirements and purpose of the drawing to be produced

sources of relevant data/information

timeframe for completion of drawings

persons who can confirm drawing requirements

treatment, preservation and storage requirements for old blueprints and drawings

Standard drawing conventions

Standard drawing conventions may include:

use of correct sectioning technique

identification of cutting plane

accurate line types

appropriate view positions

use of correct symbols

use of correct dimensioning technique

provision of suitable number of views

use of correct scales

neat presentation

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

scale drawing:

recommended scales

reduction scales

enlargement scales

multiple scales

dimensioning techniques of scale drawings

sectioning:

types of sections

required section views

placement of views

cutting planes

labelling of cutting planes and section views

general notes