By the end of this topic, you should be able to...
create virtual representations of a solution, highlighting key usability features, and explain how it meets the design specifications and achieves the design intentions as a proposed solution or as an improvement to an existing product.
Guiding Question
How do designers approach problem-solving?
What Are Virtual Representations?
A virtual representation is a digitally produced visual — or set of visuals — that presents a design solution as a resolved, realistic, three-dimensional object in a context that communicates its form, materiality, usability, and design intent.
The word virtual is critical here. Unlike physical prototypes — which exist as tangible objects — virtual representations exist as digital constructs. They are created using Computer Aided Design (CAD) software, rendering engines, digital illustration tools, and presentation environments that simulate the appearance, material properties, lighting, and context of a real manufactured product.
Key distinction from concept drawings: Where concept drawings (B2.1.14) communicate technical specification — dimensions, tolerances, assembly details — virtual representations communicate design intent and user experience. They answer not "How is this built?" but "What is this, why does it look this way, how does it work for users, and what design decisions made it the right solution?"
Why Virtual Representations Matter
Consider the challenge facing any designer at the end of a rigorous design process:
You have spent weeks or months researching users, defining criteria, generating ideas, building and testing prototypes, and iteratively refining a solution. You understand the design completely — every decision has evidence behind it, every dimension was arrived at through testing, every material was selected for specific functional and user-experience reasons.
But your client, examiner, or manufacturing partner was not part of that journey. They are encountering your solution for the first time.
A virtual representation bridges that gap by:
Establishing immediate visual credibility — a high-quality rendering communicates that the designer has arrived at a resolved, considered solution
Communicating form and materiality — the three-dimensional appearance, surface quality, and material character of the design
Highlighting usability features — the specific design decisions that make the solution work for its intended users
Connecting decisions to evidence — demonstrating that each design decision was driven by research, specification criteria, and testing findings
Positioning the design in context — showing the design in use, in its environment, and in relationship to the human body
In professional design practice, the presentation rendering is often the first thing a client sees of a proposed solution. It must work as a standalone communication — immediately compelling, clear, and persuasive — before a single word of explanation is offered.
The Components of a Virtual Representation
A complete virtual representation for a design solution typically integrates multiple visual and communicative elements:
1: The CAD Model
The foundation of any virtual representation is a three-dimensional CAD model — a precise digital model of the design solution built to the exact dimensions established in the concept drawings.
What is CAD Modelling?
Computer Aided Design (CAD) modelling is the process of constructing a three-dimensional digital model of a product using parametric modelling software. The model is built from geometric primitives — extrusions, revolves, sweeps, lofts — that are combined and modified to produce the precise three-dimensional form of the design.
The most widely used professional CAD platforms for product design include:
Platform | Primary Use | Character |
SolidWorks | Mechanical and product design | Parametric, feature-based — dimensions can be changed and the model updates automatically |
Autodesk Fusion 360 | Integrated design, engineering, and manufacturing | Cloud-based, accessible, parametric and freeform tools |
Autodesk Inventor | Mechanical and assembly design | Robust parametric with strong assembly modelling |
Rhino 3D | Industrial design and freeform surfaces | Exceptional surface quality — preferred for ergonomic forms |
CATIA | Aerospace and automotive | Industry standard for complex surface design |
KeyShot | Rendering and visualisation | Industry-standard real-time rendering engine |
Why CAD Modelling Matters
The CAD model is not merely a visual tool — it is a digital prototype that carries the complete geometric specification of the design. From a single CAD model, designers can generate:
Rendered visualisations — photorealistic images for presentation
Technical drawings — orthographic projections and assembly drawings generated directly from the model geometry
Stress analysis — finite element analysis (FEA) simulating how the design responds to applied loads
Manufacturing data — CNC toolpaths, 3D printing files, and injection moulding analysis generated from model geometry
Real-World Example: When Dyson develops a new product, the CAD model exists as the single source of truth for the entire design. Every team — design, engineering, manufacturing, marketing — works from the same CAD model. When the form is refined by the design team, the engineering analysis automatically updates. When the dimensions are changed, the manufacturing tooling data automatically updates. This single-model approach — made possible by parametric CAD — is one of the core reasons Dyson can move from concept to manufactured product with the precision their performance standards demand.
2: Presentation Rendering
Rendering is the process of applying materials, lighting, and environment to the CAD model to produce a photorealistic image — one that simulates the appearance of the actual manufactured product in a real-world environment.
A high-quality presentation rendering communicates:
Surface material and finish — the appearance of plastic, metal, rubber, fabric, and other materials
Form and three-dimensionality — the way light and shadow reveal the three-dimensional form of the design
Scale and proportion — the visual relationship between different elements of the design
Quality and character — the overall aesthetic impression of the design solution
The Rendering Pipeline
Professional rendering involves several stages:
Stage | Process | Output |
Material assignment | Applying simulated material properties — colour, reflectivity, transparency, texture — to each surface of the model | Model surfaces appear as the specified materials |
Environment setup | Placing the model in a simulated lighting environment — studio lighting, natural light, contextual setting | Realistic lighting and shadow |
Camera positioning | Setting the viewpoint, focal length, and depth of field to produce a composition that best communicates the design | The most effective visual angle on the design |
Rendering | Processing the model geometry, materials, lighting, and camera settings through a rendering algorithm to produce a final image | Photorealistic image or animation |
Post-processing | Adjusting the rendered image — brightness, contrast, colour balance, adding backgrounds or context elements | Final presentation-quality image |
Rendering Techniques
Technique | Description | Best Used For |
Studio rendering | Clean, neutral background with controlled studio-quality lighting | Communicating form and material character clearly — focused on the design itself |
Lifestyle rendering | Design placed in a realistic contextual setting — home, office, outdoor environment | Communicating the design in its real-world use context |
In-use rendering | Design shown being used by a human figure or hand | Communicating ergonomics, scale, and user interaction |
Detail rendering | Close-up rendering of specific features | Highlighting specific usability or technical details |
Exploded rendering | Rendered exploded view showing component relationships | Communicating assembly structure with the visual quality of a rendering |
Real-World Example: When Apple presents a new product — whether to investors, media, or consumers — the presentation renderings they use are themselves a product of exceptional design skill. The precise lighting angles, the exact camera positioning, the specific material representations — each element of the rendering is designed to communicate the product's character and quality as precisely as the product itself. The famous Apple product presentations designed by Jony Ive's team used rendering techniques that were pioneered at Apple and have since become the standard language of premium product presentation across the industry.
3: Annotated Presentation Views
The most powerful virtual representations are not simply beautiful images — they are annotated communication tools that explicitly connect visual elements of the design to the design decisions, specification criteria, and research evidence that generated them.
An annotated presentation view combines:
A high-quality rendered image — the visual foundation
Callout annotations — leader lines connecting specific design features to explanatory text
Specification references — explicit connections between design features and the criteria they fulfil
Evidence references — connections between design decisions and the research, testing, or user feedback that drove them
Anatomy of an Effective Annotation
An effective annotation does four things simultaneously:
Element | Purpose | Example |
Identifies the feature | Names or describes the specific design element | "Santoprene grip overmould" |
Describes the decision | Explains what was decided and why | "Shore 55A hardness — soft enough to deform slightly under grip pressure, firm enough to maintain handle geometry" |
References the specification | Connects to the criterion it fulfils | "Meets Specification Criterion 3 — minimum grip force required ≤ 15N" |
References the evidence | Cites the research or testing that drove the decision | "Informed by user testing Iteration 2 — users with arthritis rated Shore 55A significantly higher than Shore 70A on comfort scale" |
This four-element annotation structure transforms a beautiful rendering into a design argument — a visual and textual demonstration that every element of the solution was arrived at through rigorous, evidence-based design thinking.
4: Ergonomic and Usability Visualisations
Communicating usability features requires visual representations that show the design in relationship to the human body — demonstrating ergonomic fit, interaction quality, and accessibility performance.
Human Figure Rendering
Including accurate human figure models in virtual representations communicates:
Scale — the size relationship between the design and the human body
Grip and posture — how the hand, body, or limb interacts with the design
Reach and access — whether controls and features are within comfortable reach
Clearance — whether there is adequate space for operation and use
Universal Design significance: Human figure rendering is particularly powerful for communicating the inclusive range of a design. By showing the same design used by figures of different body sizes, ages, and ability levels — rendered with equal visual quality and dignity — a presentation makes a compelling visual argument for the design's universal accessibility. When OXO presents the Good Grips range, their lifestyle renderings consistently feature hands of different ages, sizes, and ability levels — visually demonstrating inclusive design intent.
Ergonomic Analysis Overlay
Some virtual representation tools allow ergonomic analysis data to be overlaid directly on the rendering — creating visualisations that show:
Pressure distribution — colour maps showing how grip force is distributed across a handle surface
Joint angle analysis — skeletal overlays showing wrist and joint angles during operation
Reach zone analysis — overlays showing whether controls fall within comfortable reach envelopes for different user body sizes
Visual field analysis — simulation of what users with different visual conditions see when using the product
Real-World Example: Humanscale's design team uses digital human modelling software — including RAMSIS and Jack — to generate ergonomic analysis visualisations as part of their product development and presentation process. When presenting the Freedom Chair to corporate clients, Humanscale's presentation renderings include ergonomic overlay visualisations showing lumbar support contact, seat pressure distribution, and arm reach analysis — communicating the ergonomic performance of the design with the visual precision of scientific data combined with the accessibility of a high-quality rendering.
5: Specification Compliance Visualisation
A key purpose of the virtual representation is to demonstrate explicitly how the design solution meets the design specification — the criteria established at the beginning of the design process to define what a successful solution must achieve.
Specification Mapping
A specification compliance section of a presentation systematically addresses each specification criterion — showing visually how the design meets it:
Criterion | Specification | Design Feature | Visual Evidence |
Ergonomic | Handle diameter 35-45mm for 5th–95th percentile adult grip | 38mm diameter grip — rendered with grip size callout | Rendered hand showing comfortable enclosure |
Force | Maximum operation force ≤ 15N | Spring mechanism — force calibrated to 12N | Section rendering showing mechanism with force annotation |
Material | Food-contact safe materials throughout | FDA-compliant Santoprene and ABS — callout annotation | Material specification annotation on rendered surface |
Accessibility | Operable without pinch grip | Ergonomic blade lever — rendered in operating position | Rendered palm-heel operation demonstrating no pinch grip |
Dimensional | Fits within 200mm × 80mm × 50mm packaging envelope | External dimensions annotated on studio rendering | Orthographic rendering with dimension annotations |
This systematic visual mapping of design features to specification criteria is one of the highest-value elements of an IA presentation — directly demonstrating to examiners that the design is a response to research, not an arbitrary aesthetic choice.
6: Comparison with Existing Products
When the design brief involves improvement to an existing product, the virtual representation should include a structured visual comparison between the existing product and the proposed improvement — demonstrating specific, measurable advances in usability, accessibility, or performance.
Structured Comparison Framework
Comparison Element | Existing Product | Proposed Improvement |
Visual rendering | Accurate rendering of existing product | Rendering of proposed design at same scale and viewpoint |
Usability features | Annotated usability limitations of existing design | Annotated improvements addressing each limitation |
Specification compliance | Assessment against specification criteria | Demonstration of compliance with each criterion |
User testing evidence | Results of user testing with existing product | Projected improvement based on design decisions and testing evidence |
Real-World Example: When OXO developed the original Good Grips peeler — the product that launched the entire Good Grips range — their design team produced comparison visualisations contrasting the traditional straight-handled peeler with the new ergonomic design. These comparisons explicitly showed the grip diameter increase (from approximately 10mm to 38mm), the material change (from polished steel to Santoprene), and the blade guard addition — each improvement annotated with reference to the user research with arthritis patients conducted by designer Sam Farber and his wife Betsey, for whom the design was originally conceived.
Types of Virtual Representations
The following taxonomy covers the full range of virtual representation types a designer might deploy in a professional or IA presentation.
Studio Rendering
Purpose: Communicate the design's form, material, and aesthetic character with maximum clarity.
Characteristics:
Clean, neutral background — typically white, grey, or graduated black-to-white
Controlled three-point lighting — key light, fill light, and rim/backlight creating clear three-dimensional form reading
Camera positioned at approximately 30°–45° elevation and 30°–45° from the front face — the classic product photography viewpoint
Multiple views — front, three-quarter, detail — providing comprehensive visual coverage
When to use: Primary presentation rendering — the first image a viewer sees. Establishes immediate visual quality and communicates form clearly.
Lifestyle / Contextual Rendering
Purpose: Communicate the design in its real-world use environment — establishing context, use scenario, and human scale.
Characteristics:
Realistic environmental setting — kitchen, bathroom, workplace, outdoor space
Human figures or body parts interacting with the design
Lighting consistent with the depicted environment
Design shown in use — at the moment of its intended function
When to use: Communicating the user experience of the design — how it fits into real life, who uses it, and how it is used. Particularly effective for universal design presentations — showing diverse users across the population.
Section / Cutaway Rendering
Purpose: Communicate internal design features — mechanisms, internal geometry, material layers — with the visual quality of a rendered image.
Characteristics:
Model geometrically cut along a defined plane — internal features visible
Cut surfaces indicated with a contrasting material appearance — typically a flat, saturated colour
Internal components rendered in their correct materials and colours
Annotations identifying internal features and their functions
When to use: Communicating products with significant internal complexity — mechanical products, electronic devices, products with multiple material layers. Demonstrates design sophistication and communicates features invisible in external views.
Exploded Rendering
Purpose: Communicate the component structure of an assembled product with the visual quality of a rendered image.
Characteristics:
Components shown separated along assembly axes — same structure as an exploded view drawing
All components rendered in their correct materials and colours
Assembly axes indicated by thin lines or arrows
Bill of Materials or component labels integrated into the composition
When to use: Communicating product assembly and component structure when the visual quality of a rendering is needed alongside the structural information of a technical exploded view.
Animation and Interactive Presentation
Purpose: Communicate dynamic aspects of the design — movement, assembly sequence, mechanism operation — that cannot be fully communicated in a static image.
Characteristics:
Product animation — rotating camera views, assembly animations, mechanism operation sequences
Interactive 3D — web-based 3D viewers allowing the audience to rotate, zoom, and explore the model
Augmented Reality (AR) presentation — overlaying the virtual design on a real-world view through a smartphone or tablet camera
When to use: Communicating designs with significant mechanical complexity, or for client presentations where audience engagement and interactive exploration are priorities.
Real-World Example: Ford Motor Company pioneered the use of virtual reality design review — allowing design teams, engineers, and client representatives to experience full-scale virtual representations of new vehicle designs before any physical prototype is built. Using VR headsets, participants can sit inside the virtual vehicle, evaluate interior ergonomics, assess visibility and reach, and experience the design at true human scale — providing rich usability feedback that would previously have required expensive physical prototypes. This approach, now widely used across the automotive industry, collapses the time and cost of iterative ergonomic testing while dramatically increasing the quality and volume of usability data available to designers.
Annotated Orthographic Rendering
Purpose: Bridge the gap between technical drawing and presentation rendering — providing dimensionally precise visual information with the material and three-dimensional clarity of a rendering.
Characteristics:
Orthographic views rendered in the chosen material appearance — not line drawings
Dimensions and annotations overlaid on rendered views
Scale bar included
Multiple views — front, top, side — arranged in correct orthographic relationship
When to use: Presenting a design to audiences who need both visual quality and dimensional information — such as manufacturing partners evaluating a design proposal, or assessment presentations requiring both specification compliance and visual communication.
Highlighting Key Usability Features
The most critical communication task in a virtual representation is explicitly identifying and explaining the usability features — the specific design decisions that make the solution work for its intended users.
What Is a Usability Feature?
A usability feature is any element of the design — geometric, material, dimensional, or configurational — that directly affects the ease, safety, efficiency, or accessibility with which a user can interact with the product.
Usability features are not decorative decisions — they are functional design decisions driven by user research and specification criteria.
The DECIDE Framework
Step | Question | Example Response |
|---|---|---|
D — Describe | What is the feature? | "Oversized, D-shaped grip loop, 38mm internal diameter" |
E — Evidence | What research or testing evidence identified the need? | "User testing with 12 arthritis participants showed that grip loops smaller than 32mm required pinch grip, causing pain. 38mm diameter achievable with whole-hand enclosure." |
C — Criteria | Which specification criterion does it address? | "Specification Criterion 4: Operable without pinch grip by users with reduced hand strength (< 20N available grip force)" |
I — Iteration | How did this feature evolve through design iterations? | "Iteration 1 used a 28mm loop (standard size) — rejected in testing. Iteration 2 used 35mm — borderline. Iteration 3 used 38mm — passed user testing with all 12 participants." |
D — Design decision | What specific design decision was made and why? | "38mm selected as the minimum diameter achieving whole-hand operation across the tested user population, while remaining compact enough to fit within the product's dimensional envelope." |
E — Evidence of success | What evidence confirms this feature works? | "User testing Iteration 3: 12/12 participants achieved whole-hand operation. 11/12 rated grip comfort ≥ 4/5. Mean operation force reduced from 18N (existing product) to 11N (proposed design)." |
Universal Design Usability Features — Specific Examples
Drawing from universal design principles, the following are examples of usability features that should be explicitly highlighted in virtual representations of inclusive design solutions:
Category 1 — Ergonomic Form Features
Feature | Universal Design Purpose | Visual Communication |
|---|---|---|
Increased grip diameter | Enables whole-hand operation — accessible to users with reduced pinch grip strength | Rendered with hand figure showing full-hand enclosure; diameter callout annotation |
Soft-touch overmould | Reduces grip force required; increases friction for wet hands; comfortable for sensitive skin | Material annotation specifying hardness (Shore A); texture detail rendering |
Non-slip base | Enables one-handed operation by stabilising the product | Material callout; lifestyle rendering showing one-hand use |
Asymmetric left/right grip | Optimised for specific hand orientation; clearly differentiable by touch | Chirality annotation; detail rendering of asymmetric form |
Thumb rest / finger locates | Guides correct hand positioning without visual reference | Callout annotation; tactile guidance rendering |
Category 2 — Control and Interface Features
Feature | Universal Design Purpose | Visual Communication |
|---|---|---|
Enlarged control surfaces | Accessible to users with reduced finger dexterity | Dimensioned callout showing control surface area |
High contrast colour coding | Accessible to users with low vision | Colour and contrast specification annotation |
Tactile differentiation | Enables identification without vision | Texture detail rendering with tactile pattern specification |
Auditory feedback | Click or snap feedback confirms activation without visual confirmation | Mechanism section rendering showing feedback geometry |
Reduced activation force | Accessible to users with reduced strength | Force specification annotation; mechanism rendering |
Category 3 — Structural and Safety Features
Feature | Universal Design Purpose | Visual Communication |
|---|---|---|
Blade guard / protective housing | Safety for users who may have reduced tactile sensitivity | Section rendering showing guard geometry and clearances |
Recessed sharp edges | Prevents accidental contact with cutting surfaces | Detail rendering of edge recess with clearance dimension |
Stable base geometry | Prevents tipping during single-hand loading | Section rendering showing centre of gravity analysis |
Lightweight construction | Reduces fatigue for users with reduced upper limb strength | Weight annotation; material specification callout |
Explaining How the Design Meets Specifications and Achieves Design Intentions
The virtual representation is not complete until it explicitly argues for the design — demonstrating through visual evidence that the solution meets its specification and achieves the design intentions established at the beginning of the process.
The Design Argument Structure
A professional design presentation builds a structured argument:
DESIGN INTENTION
↓
SPECIFICATION CRITERIA
↓
RESEARCH EVIDENCE
↓
DESIGN DECISION
↓
VISUAL DEMONSTRATION
↓
TEST EVIDENCE
↓
CONCLUSION: CRITERION MET
This argument structure should be visible in the presentation itself — not merely stated in an accompanying text.
Communicating Design Intentions
Design intentions are the fundamental goals of the design — the transformation the design is intended to achieve in users' lives, experiences, or capabilities.
Design intentions are broader and more humanistic than specification criteria — they describe why the design matters, not just what it must achieve:
Level | Example |
|---|---|
Design intention | "Enable people with arthritis to prepare food independently, with comfort and dignity, without requiring assistance from others" |
Specification criterion | "Maximum operation force ≤ 15N at point of use" |
Design feature | "Calibrated spring mechanism delivering 12N cutting force with 38mm grip diameter loop" |
In a virtual representation, design intentions are typically communicated through:
Title and headline text — the opening statement of the presentation establishing the human purpose of the design
Contextual lifestyle renderings — showing the design being used by people of the intended user group, in contexts that communicate the design intention visually
User quote integration — incorporating quotes from user research and testing that connect the design to real human experience
Before/after comparison — showing the difficulty of the existing situation and the improvement the design delivers
The Specification Compliance Summary
A specification compliance summary — a visual table or matrix directly mapping design features to specification criteria — is one of the most powerful and assessable elements of a virtual representation presentation.
Criterion | Specification | Feature | Evidence | ✅ / ❌ |
|---|---|---|---|---|
Ergonomic | Operation force ≤ 15N | Spring mechanism — 12N | User test 3: Mean force 11.3N | ✅ |
Ergonomic | Grip diameter 35–45mm | 38mm grip loop | Anthropometric data — 5th–95th %ile | ✅ |
Material | Food-contact safe | FDA-compliant ABS and Santoprene | Material specification sheets | ✅ |
Dimensional | ≤ 200mm total length | 185mm assembled length | CAD model dimension | ✅ |
Accessibility | No pinch grip required | D-loop grip with 38mm internal diameter | User test 3: 12/12 participants whole-hand operation | ✅ |
Safety | No exposed blade at rest | Blade retracts behind guard when not cutting | Section rendering — 3mm guard clearance | ✅ |
Communicating Improvement Over Existing Products
When the design is positioned as an improvement to an existing product, the virtual representation must demonstrate the improvement visually and evidentially.
The Improvement Argument
Stage | Communication Approach |
|---|---|
Identify the existing product | Accurate rendering of the existing product — showing it with respect and precision |
Document the usability limitations | Annotated rendering identifying specific usability limitations — referenced to user research evidence |
Present the proposed improvement | Rendering of the proposed design at the same scale and viewpoint |
Map improvements to limitations | Explicit visual comparison showing how each identified limitation has been addressed |
Provide evidence of improvement | User testing data, force measurements, reach analysis, or other evidence demonstrating measurable improvement |
Real-World Example — Tork Easy Feed Dispenser: When SCA Hygiene Products redesigned their Tork paper towel dispenser for use in food service environments — where users frequently have wet or gloved hands — they produced a comprehensive comparison presentation demonstrating specific improvements over the existing design. The virtual representation included annotated side-by-side renderings showing: Existing design: 45mm diameter rotary knob — requires pinch grip — problematic with wet/gloved hands Proposed improvement: Full-width lever bar — operable with any part of the hand or forearm — no pinch grip required Evidence: Force testing showing 40% reduction in required operation force; user testing with food service workers showing 95% task success rate with gloved hands versus 60% for existing design
Digital Tools for Virtual Representations
CAD and Rendering Software
Tool | Capability | Accessibility |
|---|---|---|
Autodesk Fusion 360 | Parametric CAD + integrated rendering engine | Free for students — educational licence |
SolidWorks + Visualize | Professional parametric CAD + photorealistic rendering | Available through school licences |
Keyshot | Industry-standard standalone rendering engine | Industry professional — educational licence available |
Blender | Open-source 3D modelling and photorealistic rendering | Free — professional quality |
SketchUp + V-Ray | Accessible 3D modelling + rendering | Free and professional versions |
Adobe Dimension | Accessible 3D product rendering | Included in Adobe Creative Cloud |
Presentation and Annotation Tools
Tool | Capability | Best For |
|---|---|---|
Adobe InDesign | Professional layout and presentation design | Creating print-quality presentation boards |
Adobe Illustrator | Vector annotation and diagram creation | Creating precise annotation graphics |
Canva | Accessible layout tool with design templates | Quick professional layouts |
Figma | Digital design and presentation | Interactive digital presentations |
PowerPoint / Keynote | Universal presentation platforms | Presentation slide decks |
Rendering Quality Standards
For a virtual representation to communicate effectively, it must meet minimum quality standards in the following areas.
Quality Dimension | Minimum Standard | Professional Standard |
|---|---|---|
Geometry accuracy | Model matches concept drawing dimensions | Fully parametric model — dimensions traceable to specification criteria |
Material representation | Recognisable material types communicated | Accurate material properties — correct reflectivity, texture, colour |
Lighting quality | Object clearly visible with three-dimensional form readable | Three-point studio lighting or accurate environmental lighting |
Resolution | Sufficient for intended display — minimum 1920×1080px | 4K+ for print presentations |
Annotation clarity | All annotations legible and clearly positioned | Professional typography — consistent annotation style |
Composition | Design clearly visible and centred | Considered composition — design and annotations in deliberate visual hierarchy |
Key Takeaway
Virtual representations are the apex communication tool of the design process — digital visual arguments that simultaneously communicate what a design is, why every decision was made, how the design works for users, and how it meets its specification. Built on a foundation of precise CAD modelling, brought to life through photorealistic rendering, and made into a complete design argument through annotated specification compliance visualisation and usability feature highlighting, a professional virtual representation is the evidence that a rigorous design process has produced a genuine, human-centred solution. For designs positioned as improvements to existing products, the virtual representation provides a structured visual comparison demonstrating specific, measurable advances in usability, accessibility, or performance. The measure of a successful virtual representation is not aesthetic beauty alone — it is whether a viewer who was not part of the design journey emerges from the presentation with a complete understanding of what the design is, who it serves, why it works, and why it is the right solution to the defined problem. This is the standard of professional design communication — and it is the standard against which your IA presentation will be assessed.
IA Application — Your Virtual Representation Checklist
Before submitting your virtual representation as part of your IA, confirm:
Checklist Item | Detail |
|---|---|
☐ CAD model accuracy | Does your 3D model match your concept drawing dimensions? |
☐ Material rendering | Are all materials clearly and accurately represented? |
☐ Annotated usability features | Is each key usability feature identified, explained, and connected to evidence? |
☐ Specification compliance | Is there explicit visual mapping of design features to each specification criterion? |
☐ Design intention communication | Is the human purpose of the design clearly communicated? |
☐ Contextual / in-use rendering | Is the design shown in its use context with human scale reference? |
☐ Existing product comparison | If applicable — is there a structured comparison demonstrating improvements? |
☐ Test evidence integration | Is user testing and prototype testing evidence integrated into the presentation? |
☐ Presentation quality | Is the layout professional, legible, and visually coherent? |
☐ Complete coverage | Does the presentation communicate the design completely — no significant feature unexplained? |
Sources
Eissen, Koos, and Roselien Steur. Sketching: Drawing Techniques for Product Designers. BIS Publishers, 2007.
Giesecke, Frederick E., et al. Technical Drawing with Engineering Graphics. 15th ed., Pearson, 2016.
International Baccalaureate Organization. Design Technology Guide. International Baccalaureate Organization, 2014.
Lupton, Ellen. Thinking with Type: A Critical Guide for Designers, Writers, Editors, and Students. 2nd ed., Princeton Architectural Press, 2010.
Pipes, Alan. Drawing for Designers. Laurence King Publishing, 2007.
Samara, Timothy. Making and Breaking the Grid: A Graphic Design Layout Workshop. 2nd ed., Rockport Publishers, 2017.
Cross-reference: B2.1.14 concept drawings as the foundation for rendered presentations; B2.1.9 design specifications communicated through annotated renders.
Linking Questions
What ergonomic considerations are important to be able to engage successfully with the design process? (A1.1)
How do design technology students ensure they engage with user-centred research methods? (A2.1)
To what extent are the goals of the design process aligned with the goals of a user-centred design (UCD) process? (B1.1)
To what extent does the model, test, refine cycle require full engagement with modelling and prototyping at several levels of fidelity? (B2.2)
Which aspects of the design process require engagement with material selection? (B3.1)
How do the requirements of the design process ensure students are addressing the responsibility of the designer? (C1.1)
Why is product analysis and evaluation important in the design process? (C3.1)
To what extent does the design process require the exploration of design for manufacture strategies? (C4.1)