Year 9 Design & Technologies · Technologies and Society · 18m read

Sustainability in Design

Ever wonder if your favorite sneaker brand actually cares about the planet, or if it's just marketing? Sustainable design means making products that don't trash the environment or exploit workers — it's about designers thinking through how their choices affect people and the planet. In VCE and real careers, you'll need to evaluate these impacts yourself, because companies increasingly market themselves as "green" whether they truly are or not.

Learning objective: Evaluate the environmental, social and ethical impacts of design decisions.

By the end of this lesson you can:

• I can apply life cycle thinking to evaluate a design.
• I can identify social and ethical considerations in design.
• I can describe sustainable design principles.

Sustainable design is borrowing from the future. Every product borrows resources from future generations. Sustainable design tries to pay them back.

Sustainable design thinking

LIFE CYCLE THINKING (LCA):
Considers environmental impacts at every stage of a product's life:
1. RAW MATERIALS: extraction, mining, farming.
2. MANUFACTURING: energy, water, waste.
3. DISTRIBUTION: transport emissions.
4. USE: energy consumption, maintenance, repair.
5. END OF LIFE: disposal, recycling, decomposition.

KEY QUESTIONS:
• Where do materials come from? (Fair trade, conflict minerals)
• Who made it? (Labour conditions)
• What happens when it breaks? (Repairability)
• What happens when I throw it away? (E-waste, landfill)

SUSTAINABLE DESIGN PRINCIPLES:
• REDUCE: use less material/energy.
• REUSE: design for multiple uses.
• RECYCLE: use recycled inputs; design for recyclability.
• CIRCULAR ECONOMY: products designed to be disassembled and reused.
• BIOMIMICRY: learn from nature's solutions (Velcro from burr seeds).

SOCIAL AND ETHICAL CONSIDERATIONS:
• WHO benefits from this design? Who is disadvantaged?
• ACCESSIBILITY: can everyone use it?
• FAIR LABOUR: are workers in the supply chain paid fairly?
• PRIVACY: does the product collect data? Who controls it?
• CULTURAL APPROPRIATION: does the design draw from cultural traditions without permission/credit?

TRIPLE BOTTOM LINE:
• PROFIT (economic) + PEOPLE (social) + PLANET (environmental).
• Sustainable design considers all three, not profit alone.

AARI TIP: Ask Aari to help you conduct a life cycle analysis of a product you use every day.

Sustainable design hierarchy

• Refuse first: Do we need this product at all?
• Reduce: Use fewer materials; design for longer life.
• Recycle last: Recycling is better than landfill, but still uses energy.

Quick reference

| Strategy | Example |
|---|---|
| Life cycle thinking | Materials to disposal |
| Design for disassembly | Screws not glue |
| Renewable materials | Bamboo, cork |
| Energy efficiency | LED lighting |
| Durability | Longer life |

Worked example (Medium)

Apply life cycle thinking to evaluate the sustainability of a disposable coffee cup.

1. Materials. Virgin wood pulp (deforestation risk); plastic lining (fossil fuels); polyethylene coating makes recycling difficult.
2. Manufacturing. Energy-intensive production; bleaching uses chemicals.
3. Distribution. Lightweight but high volume — transport impacts relatively low.
4. Use. Used for 5-15 minutes; lid also single-use.
5. End of life. Mostly sent to landfill due to plastic lining preventing recycling. Extremely low recycling rate (~1% in Australia).

Answer: A disposable coffee cup has high environmental impact relative to its extremely short use life — a strong case for redesign or reusable alternatives.

Practice questions

1. Life Cycle Assessment (LCA) evaluates a product's impact:

   1. Only during its use phase.
   2. From raw material extraction through to end of life.
   3. Only at the manufacturing stage.
   4. Based only on its purchase price.

   (1 marks)

2. Evaluate the concept of the "circular economy" as a design philosophy.

   (3 marks)

3. The "circular economy" differs from the linear economy because it:

   1. Focuses on reducing price
   2. Designs products to be reused, repaired and recycled indefinitely
   3. Produces more products
   4. Uses only local materials

   (1 marks)

4. Conduct a Life Cycle Assessment of a smartphone. Which stage has the highest impact and what three design improvements would help?

   (4 marks)

5. Explain "design for disassembly" and its sustainability benefit.

   (2 marks)

Common mistakes

• Treating sustainability as only an environmental issue Sustainability has three pillars: environmental, social and economic (Triple Bottom Line). A product made using child labour is not sustainable despite low carbon footprint Fix: Address all three: environmental impact, social equity (fair labour) and economic viability
• Focusing only on end-of-life disposal Most environmental impact occurs during raw materials extraction and manufacturing — before the product reaches the consumer Fix: Apply full LCA: raw materials → manufacturing → distribution → use → end of life
• Assuming recycling solves the problem Recycling uses energy and many materials cannot be efficiently recycled with current technology Fix: Apply hierarchy: Refuse → Reduce → Reuse → Repair → Recycle → Dispose. Reducing consumption is more effective than recycling

Worked example (Hard)

Evaluate the environmental, social and economic sustainability of fast fashion. Propose one design-based solution for each dimension.

1. Environmental impact. Fast fashion: 10% of global CO2, 20% of wastewater, 500,000 tonnes microplastics annually. Most garments worn under 10 times before disposal. Polyester takes 200+ years to decompose.
2. Social impact. Garment workers (mainly women, Bangladesh/Vietnam) earn poverty wages. Rana Plaza 2013: 1,134 workers killed in preventable collapse. Australian fashion companies often lack supply chain transparency.
3. Economic impact. Race to bottom on price destroys local textile industries. Australia's textile industry declined from 50,000 workers (1970s) to under 5,000 today.
4. Environmental solution. Design for durability and disassembly: natural fibres, quality construction, removable zippers/buttons enabling end-of-life separation and recycling.
5. Social solution. Embedded supply chain traceability: QR codes on labels revealing worker information, wages, conditions — enabling verified fair trade certification.
6. Economic solution. Subscription/rental model design: shift from selling garments to leasing them — incentivises quality and longevity over disposability.

Answer: Sustainable fashion requires design solutions addressing all three pillars simultaneously — no single technical fix is sufficient without addressing social and economic dimensions.

Deeper Understanding: The Circular Economy and Biomimicry

The Ellen MacArthur Foundation's circular economy framework is built on three principles: eliminate waste and pollution by design; circulate products and materials at their highest value; regenerate natural systems. It represents systemic redesign rather than incremental improvement.

Australia generates 67 million tonnes of waste annually — among the highest per capita globally. The National Waste Policy Action Plan (2019) sets targets: 80% resource recovery and 50% food waste reduction by 2030. Design decisions made before manufacturing determine whether a product can be repaired, reused or recycled at end of life.

Biomimicry looks to nature as a model for sustainable design. After 3.8 billion years of evolution, natural systems have effective, efficient solutions. Velcro was inspired by burdock burrs; Shinkansen bullet train nose design was improved by studying the kingfisher's beak — reducing sonic booms AND improving energy efficiency by 15%. The Namibian fog basking beetle inspired water collection systems for drought-prone regions.

In the Australian context, Indigenous design knowledge represents thousands of years of sustainable resource management. The principle of "country" embodies a relational approach — taking only what is needed, maintaining reciprocal relationships with environment. Contemporary designers are increasingly partnering with Indigenous knowledge holders to develop more ecologically embedded design approaches.

Summary

• Life Cycle Assessment: raw materials → manufacturing → distribution → use → end of life.
• Triple Bottom Line: environmental, social and economic sustainability — all three matter.
• Circular economy: design products to be reused, repaired and recycled indefinitely.
• Hierarchy: Refuse > Reduce > Reuse > Repair > Recycle > Dispose.
• Design for disassembly: reversible fasteners, minimal material variety, material labelling.
• Biomimicry: learning from 3.8 billion years of natural design evolution.