Unit of competency details

Unit descriptor 

This unit covers preparing the CAD environment, creating 2D drawings, and producing output including linked bills of materials.

Application of the unit 

This unit applies to the production of 2D drawings using a CAD system, linked bills of material, file management and associated customisation of installed software including the use of macros, menus and default settings; file formats may include IGES, DXF, HPGL.

The unit applies to the fields of mechanical, electrical/electronic, fabrication, and fluid power. 2D drawings may be produced from 3D models created using computer aided design system.

This unit covers CAD skills only. Where detail drafting skills are required, the following units should be considered: Unit MEM09004B (Perform electrical/electronic detail drafting), Unit MEM09005B (Perform basic engineering detail drafting), Unit MEM09006B (Perform advanced engineering detail drafting).

Band : B 

Unit Weight : 8 

Prerequisite units 

Path 1 

MEM09002B

Interpret technical drawing

MEM16008A

Interact with computing technology

Employability skills 

This unit contains employability skills.

Elements describe the essential outcomes of a unit of competency.

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the required skills and knowledge section and the range statement. Assessment of performance is to be consistent with the evidence guide.

ELEMENT 

PERFORMANCE CRITERIA 

1. Prepare CAD environment

1.1. System variables are customised to suit standard operating procedures.

1.2. Menus are customised to suit standard operating procedures.

1.3. Drawing defaults are customised to standard operating procedures.

1.4. Macros are developed to standard operating procedures.

2. Create 2D drawings

2.1. Drawings are created using the full capability of the available software system.

2.2. Drawing entities are linked to database attributes to suit job requirements.

2.3. Detailed views are created using various scales to meet job requirements.

3. Produce output

3.1. Files are saved in various formats to standard operating procedures.

3.2. Linked entities are listed in a bill of materials format to meet job requirements.

3.3. Supplementary data is extracted from drawing to meet job requirements and may include area, lengths, angles and perimeters.

REQUIRED SKILLS AND KNOWLEDGE 

This section describes the skills and knowledge required for this unit.

Required skills 

Look for evidence that confirms skills in:

• obtaining all relevant manuals, instructions and operation procedures for the CAD software and hardware being used
• where appropriate, customising the relevant system variables to suit the applicable drafting standards/procedures
• where appropriate, customising menus to suit the applicable drafting standards/procedures
• where appropriate, customising the system defaults to suit the applicable drafting standards/procedures
• where appropriate, developing macros
• creating drawings using the appropriate drawing features of the software system
• where appropriate, linking drawing entities to database attributes
• producing detailed views of the object being drawn
• printing drawing files at the appropriate scale
• saving drawing files in the appropriate format
• producing bills of material from the drawing files/database
• extracting supplementary data from the drawing file to meet job requirements
• reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents
• planning and sequencing operations
• checking and clarifying task related information
• checking for conformance to specifications
• undertaking numerical operations, geometry and calculations/formulae within the scope of this unit

Required knowledge 

Look for evidence that confirms knowledge of:

• CAD software system
• system variables that can be customised
• procedures for customising identified system variables
• reasons for customising the system variables
• applicable drafting standards/procedures
• procedures for customising menus
• reasons for customising menus
• procedures for customising system defaults
• reasons for customising system defaults
• procedures for developing macros
• reasons for developing macros
• drawing features of the CAD software system
• reasons for using specialised software features
• procedures for linking drawing entities to database attributes
• appropriate drawing scales
• procedures for printing drawing files
• procedures for creating additional views of the object being drawn
• procedures for saving drawing files
• various formats in which drawing files can be saved
• reasons for using different formats when saving drawing files
• procedures to produce bills of material
• procedures to extract data with respect to drawn shapes/features
• properties of shapes/sections/ features that can be extracted from the drawing file
• hazards and control measures associated with using computer aided design system, including housekeeping
• safe work practices and procedures

EVIDENCE GUIDE 

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 create 2D drawings using computer aided design system. 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 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.

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 2D drawings using computer aided design system 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.

Guidance information for assessment 

RANGE STATEMENT 

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.

Drawing 

Include plans, diagrams, charts, electrical/electronic circuits

Entities 

Mean any single item created on the screen and includes for example lines, arcs, circles, text, hatch and dimensions

Attributes 

Mean properties associated with an entity and includes for example layer or level, line type, line width, colour and text

Unit sector 

Co-requisite units 

Competency field 

Drawing, drafting and design