Create 3-D solid models using CAD system

Nominal Hours: 72 | Diploma/Adv Dip: (Elective Group B) | CompetencyBased  
Assessment Plan: (One Semester: 18 weeks x 3 hrs/wk)
Updated Sep 2018

# Topic Links and Videos Assess #


Assess schedule Work Load% Must Pass Perf. Criteria
1 Lessons 1 to 6 1 Upload 2 5 20 Y 2,3
2 Lessons 7a to 10b 2 Upload 5 8 20 Y 2,3
3 Lessons 11 to 16 3 Upload 9 11 20 Y 2,3
4 Ass 1: Moulded Part 4 Upload 12 14 20 Y All
5 Ass 2: Engineer's Vice 5 Upload 15 18 20 Y All
- TOTAL - - - - 100 -  

CBT = Computer Based Testing: Typically consists of practice mode and assessment mode (Moodle).
Exam = Written test submitted on paper, all working shown neatly.

*Where applicable.


Assessment Work



Application of Unit

This unit is suitable for those working within a drafting work environment and may be applied across a range of engineering disciplines. This unit applies to the production of 3-D solid models using CAD modelling software. Operations at this level include, but are not limited to, the creation and manipulation of entities, such as arcs, lines and primitives, such as spheres, cones, cylinders and boxes. It includes the use of region and solid modelling techniques, section views, and pre-drawn library files. Work also includes extraction of properties and application of basic rendering techniques.

This unit includes applications in CAD, computer graphics and animation, rapid prototyping, medical testing and visualisation of scientific research.

Required Skills and Knowledge

Required skills 

Required skills include:

  • using computing technologies and navigating software
  • obtaining relevant job instructions and specifications
  • creating the appropriate entities in 3-D space
  • manipulating the entities in 3-D space
  • creating swept, extruded and revolved solids in 3-D space
  • modifying, where appropriate, existing 3-D models
  • saving drawing files in the appropriate format
  • extracting the physical properties of shapes created in 3-D space 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
  • checking and clarifying task-related information
  • checking for conformance to specifications
  • undertaking numerical operations, geometry and calculations/formulae within the scope of this unit
  • creating intelligent models using parametric modelling
  • producing composite models (composite regions and composite solids)
  • producing sectioned models (cutting planes and cross hatching)
  • using pre-drawn library files and primitives to produce a 3-D model
  • extracting mass and area properties from solid model
  • applying rendering techniques to a 3D model (rendering types and preferences, render lighting techniques, and views and scenes)
  • using various materials and surface finish options
  • producing hard copies of 3-D solid models
  • saving 3-D models in various file formats for retrieval into other CAD application software
  • producing orthogonal detail drawings of components on standard drawing sheets to a recognised drafting scale

Required knowledge 

Required knowledge includes:

  • purpose for which the 3-D model is to be developed
  • appropriate coordinate system for the job
  • reasons for selecting the chosen coordinate system
  • orientation of the model with respect to the coordinate system
  • number of views required to establish the model
  • procedures for creating entities in 3-D space
  • the entities that can be created/manipulated in 3-D space
  • procedures for manipulating entities in 3-D space
  • procedures for creating swept, extruded and revolved solids in 3-D space
  • applications of swept, extruded and revolved solids
  • procedures for modifying existing 3-D models
  • rendering types and preferences, render lighting techniques, views and scenes
  • procedures for saving drawing files
  • the various formats in which drawing files can be saved
  • reasons for using different formats when saving drawing files
  • procedures for extracting data with respect to the physical properties of shapes created in 3-D space
  • the physical properties of shapes created in 3-D space that can be extracted from the drawing file
  • hazard and control measures associated with using CAD system, including housekeeping
  • safe work practices and procedures
  • terminology associated with solid modelling (region modelling, solid modelling, and wire frame, as opposed to solids)
  • region modelling techniques (creating a region primitive and editing regions)
  • solid modelling techniques (creating solid primitives, editing solid primitives, and conversion from region to solid models)



Assessment is a combination of multiple choice tests, written tests, and submitted reports (print/email).

  • Lab Reports: Specification for lab reports. (Including error analysis where required)
  • Project Reports: Specification for project reports.
  • TESTER tasks: Computer based learning and assessment using the TESTER program.
    Procedures and rules. For most computer-based assessments, homework must be presented before Tester (exam mode) can be attempted.  In some cases, certain programs (e.g. Excel) are excluded from running with Tester during an exam. 

When you have completed this unit of competency you will have developed the knowledge and skills to determine the resultant and equilibrant of systems of forces, in one plane, then determine nominal sizes for a simple horizontal beam subject to a combination of uniform and point loadings.

Required Texts   

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