Building Material Emissions to Double by 2060 Without Intervention

Why It Matters

This research highlights the critical environmental footprint of the construction sector. Designers and engineers must consider the lifecycle impact of materials, moving beyond immediate functional requirements to address embodied carbon and resource depletion.

Key Finding

Without significant changes, the environmental impact of building materials will grow substantially, with a notable shift in emission burden towards developing regions. Even with efficiency measures, the sector faces challenges in aligning with climate goals.

Key Findings

• Building material-related emissions are projected to increase by 3.5 to 4.6 Gt CO2eq yr-1 between 2020-2060 under a baseline scenario.
• Low- and lower-middle-income regions will see a rapid increase in emissions, rising from 22% globally in 2020 to 51% in 2060.
• Implementing material efficiency strategies could nearly halve baseline emissions, but even then, the sector would require a disproportionate share of emissions to meet climate targets.

Research Evidence

Aim: To evaluate material-related greenhouse gas emissions for residential and commercial buildings and assess their reduction potentials globally by 2060.

Method: Scenario analysis and modelling

Procedure: The study modelled material-related greenhouse gas emissions for residential and commercial buildings across 26 global regions under different scenarios (baseline and high efficiency) up to 2060, analyzing the impact of socioeconomic development and material use strategies.

Context: Global building materials sector

Design Principle

Design for resource efficiency and low embodied carbon throughout the material lifecycle.

How to Apply

When selecting materials for a design project, research their embodied carbon footprint and consider alternatives that offer lower environmental impact.

Limitations

Projections are dependent on assumptions about future socioeconomic development, technological advancements, and policy implementation.

Student Guide (IB Design Technology)

Simple Explanation: The study shows that making buildings uses a lot of materials that create greenhouse gases. If we don't change how we build, this problem will get much worse by 2060, especially in poorer countries. Even if we try to be more efficient, it might not be enough to meet climate goals.

Why This Matters: Understanding the environmental cost of materials is crucial for creating responsible and sustainable designs. This research provides data to justify choices that minimize negative impacts.

Critical Thinking: How can design innovation address the projected increase in emissions in lower-income regions, where resources for implementing advanced strategies may be limited?

IA-Ready Paragraph: This research indicates a significant projected increase in greenhouse gas emissions from building materials by 2060, particularly in developing regions. This underscores the critical need for designers to prioritize material efficiency and low-carbon alternatives in their projects to mitigate environmental impact.

Project Tips

• When choosing materials for your design, research their environmental impact.
• Consider how your design can be made with less material or recycled materials.

How to Use in IA

• Use the findings to justify material selection and discuss the environmental implications of your design choices.

Examiner Tips

• Demonstrate an understanding of the global impact of material choices beyond immediate aesthetics and function.

Independent Variable: ["Socioeconomic development level","Material use and supply strategies"]

Dependent Variable: ["Material-related greenhouse gas emissions"]

Controlled Variables: ["Building type (residential/commercial)","Time period (2020-2060)","Geographical regions"]

Strengths

• Global scope covering 26 regions.
• Analysis of multiple scenarios for future impact.

Critical Questions

• What are the ethical implications of the projected emission burden shifting to lower-income regions?
• How can design education better equip future professionals to tackle these material-related challenges?

Extended Essay Application

• Investigate the lifecycle assessment of a specific building material and propose innovative ways to reduce its environmental footprint.
• Compare the material emissions of traditional construction methods versus emerging sustainable building techniques.

Source

Global greenhouse gas emissions from residential and commercial building materials and mitigation strategies to 2060 · Nature Communications · 2021 · 10.1038/s41467-021-26212-z