The Evolving Role of Structural Engineers in a Changing Climate

Structural engineers have always been responsible for ensuring buildings and infrastructure remain safe and functional. Climate change fundamentally alters the conditions under which structures must perform. Rising global temperatures, more frequent and intense storms, sea-level rise, and shifting precipitation patterns create loads and stresses that exceed historical design parameters. The Society of Structural Engineers (SSE) recognizes that the profession must adapt its standards, education, and practices to address these new realities. The organization serves as a central hub for developing and disseminating the technical knowledge required to design for a future that looks markedly different from the past. This is not merely a matter of environmental stewardship; it is a core issue of public safety and economic resilience. The SSE is working to ensure that every structural engineer has the tools and understanding necessary to meet the challenges of a warming world.

Why Sustainable Structural Design Is Now a Professional Imperative

The concept of sustainability in structural engineering has moved from a niche interest to a central professional obligation. The carbon footprint of the built environment is substantial, with the production of materials such as concrete and steel accounting for a significant percentage of global greenhouse gas emissions. The SSE emphasizes that sustainable design is not an optional add-on but a fundamental responsibility. Reducing the environmental impact of structures must be balanced with the equally critical need for resilience. The two goals are interconnected. A building that collapses in a flood or hurricane because it was designed only for efficiency is not truly sustainable. Conversely, a highly resilient structure that relies on carbon-intensive materials and energy systems contributes to the very problem it is designed to withstand. The SSE promotes an integrated approach where efficiency, durability, and adaptability are considered from the first design sketches.

Tackling Embodied Carbon in Structural Systems

A major focus of sustainable structural design is the reduction of embodied carbon, which refers to the total greenhouse gas emissions associated with the extraction, manufacturing, transport, and construction of building materials. Structural engineers directly influence this through material selection. The SSE provides guidance on using low-carbon concrete mixes that incorporate supplementary cementitious materials like fly ash or slag, specifying recycled steel, and exploring engineered timber as a viable alternative for certain building types. The society advocates for the specification of materials with Environmental Product Declarations (EPDs), which provide verifiable data on a product's environmental impact. By promoting whole-building life-cycle assessment (LCA), the SSE helps engineers quantify and minimize the carbon footprint of their structural designs from cradle to grave.

Designing for Operational Efficiency and Adaptability

While embodied carbon is a major concern, the operational energy use of buildings remains a critical factor. Structural systems can influence a building's energy performance. For example, exposed structural mass can be used for passive thermal regulation, reducing the need for mechanical heating and cooling. The SSE encourages engineers to collaborate closely with architects and mechanical engineers to optimize structural forms for energy efficiency. Furthermore, the society promotes designs that are adaptable over time. A structure that can be easily reconfigured for different uses avoids premature demolition and reconstruction, saving significant materials and energy over its lifespan. This principle of design for deconstruction or adaptive reuse is a key strategy championed by the SSE for reducing long-term environmental impact.

Detailed Strategies for Enhancing Climate Resilience

Climate resilience involves designing structures that can withstand, recover from, and adapt to climate-related hazards. The SSE has developed a comprehensive framework for resilience that goes beyond simply meeting minimum building code requirements. Modern codes are often based on historical data, which is no longer a reliable predictor of future conditions. The SSE advocates for a forward-looking approach that incorporates climate projections into the design process. This requires engineers to think probabilistically about future risks and to build in margins of safety that account for uncertain but likely climate scenarios. The society provides resources and training to help engineers apply these advanced concepts in practical design workflows.

Wind and Storm Resilience

With the increasing intensity of hurricanes, cyclones, and derechos, designing for extreme wind events is a priority. The SSE provides detailed guidance on structural detailing for high-wind regions. This includes specifying stronger connections between roof and wall assemblies, using impact-resistant glazing, and designing for positive and negative wind pressures on building envelopes. The society also advocates for the use of performance-based design, which allows engineers to model a structure's actual behavior under extreme wind loads rather than relying on simplified prescriptive code provisions. This approach can lead to more efficient and robust designs that are better suited to the specific risks of a given site.

Flood and Water Damage Mitigation

Sea-level rise and increased rainfall intensity are leading to more frequent and severe flooding in many regions. The SSE addresses this through guidance on resilient foundation systems, the use of flood-resistant materials, and strategies for elevating structures in flood-prone areas. Engineers are trained to design for both hydrostatic and hydrodynamic loads caused by floodwaters. Beyond structural integrity, the SSE emphasizes the importance of drying potential and material selection to minimize mold and decay after a flood event. Designing with wet floodproofing strategies, where floodwaters are allowed to flow through lower levels, or dry floodproofing, where the building envelope is sealed to keep water out, requires careful structural analysis that the SSE promotes through its publications and courses.

Thermal Performance and Heat Resilience

Extreme heat poses a significant challenge to building performance and occupant safety. The SSE encourages the use of high-albedo roofing materials and cool roofs to reduce the urban heat island effect. Structural engineers play a role in supporting green roofs, which provide insulation and reduce stormwater runoff. The society also highlights the need to design for thermal expansion in longer spans and exposed structures, as greater temperature fluctuations can induce stresses not previously considered. Ensuring that buildings can remain functional during heat waves, particularly for vulnerable populations, is a growing area of focus within SSE's resilience framework.

Advancing Research and Material Innovation

The SSE is a major funder and facilitator of research aimed at creating new materials and methods for sustainable construction. The society connects academic researchers with practicing engineers to translate laboratory breakthroughs into practical applications. This helps bridge the gap between theoretical advancements and real-world implementation, a key barrier to innovation in the construction industry. The SSE publishes technical journals and hosts conferences where the latest findings are presented and debated, ensuring that its members are aware of the cutting edge of structural engineering science.

High-Performance and Bio-Based Materials

Current research areas supported by the SSE include the development of high-performance concretes that are both stronger and lower in carbon. This includes geopolymer concretes and other alkali-activated materials that can eliminate the use of Portland cement entirely. The society is also a strong advocate for mass timber construction, including cross-laminated timber (CLT) and glue-laminated timber (glulam). These materials sequester carbon and can be manufactured with high precision, reducing waste. The SSE provides technical guidance on the fire performance, connection detailing, and long-term durability of timber structures, giving engineers the confidence to specify these materials for larger and taller buildings.

Digital Tools for Sustainable Design

The SSE promotes the use of advanced digital tools to optimize structural designs for both cost and environmental performance. Building Information Modeling (BIM) allows for detailed material takeoffs and clash detection, reducing waste during construction. The society encourages the integration of LCA software within BIM workflows, enabling engineers to see the real-time carbon impact of their material choices. Computational design tools and parametric modeling allow for the creation of efficient structural forms that use less material without compromising strength. The SSE provides training and best-practice guides for these digital workflows, helping engineers adopt them into standard practice.

Education, Advocacy, and Policy Engagement

A core function of the SSE is educating its members and influencing the broader policy environment. The society believes that lasting change requires not only technical knowledge but also a supportive regulatory and economic framework. The SSE works to ensure that its members are prepared to advocate for sustainable practices with clients, contractors, and public officials. The organization provides resources on how to calculate and communicate the life-cycle costs and benefits of resilient and sustainable design, helping to make the business case for investing in higher performance.

Continuing Education and Professional Development

The SSE offers a comprehensive program of continuing education focused on climate change. This includes online courses, workshops, and seminars covering topics such as advanced wind engineering, flood-resistant design, low-carbon material specification, and performance-based seismic design. The society has a formal certification program for engineers who specialize in resilience and sustainability, providing a recognized credential that demonstrates expertise to employers and clients. These educational offerings are reviewed and updated regularly to reflect the latest research and code changes, keeping practicing engineers current with the evolving state of the art.

Shaping Codes and Standards

The SSE plays an active role in the development of building codes and industry standards. The society sends representatives to code development committees and provides technical comments on proposed changes. The SSE advocates for codes that are more reflective of future climate conditions rather than only historical precedent. This includes pushing for updated wind speed maps that account for climate change projections, flood elevation requirements that consider sea-level rise, and thermal design criteria that are appropriate for a hotter climate. By engaging in this process, the SSE helps ensure that the baseline for all construction is raised to meet the challenges of the 21st century.

Public Awareness and Community Engagement

Beyond the profession, the SSE works to raise public awareness about the importance of resilient infrastructure. The society issues policy briefs for government officials, publishes articles for the general public, and participates in community planning processes. The SSE emphasizes that investments in resilient structural design are cost-effective over the long term because they reduce damage, downtime, and recovery costs after extreme events. The society provides simple, clear information to help homeowners and community leaders understand the value of hiring engineers trained in climate-resilient design, building broader public support for higher construction standards.

Strategic Collaborations and Partnerships

Addressing climate change is a challenge that transcends any single organization or discipline. The SSE actively collaborates with a wide range of partners to amplify its impact. These partnerships allow the society to draw on expertise from other fields, coordinate advocacy efforts, and work on large-scale initiatives that no single group could undertake alone. Collaboration is essential for tackling systemic challenges like decarbonizing the concrete industry or developing national resilience standards.

Partnering with Government Agencies and NGOs

The SSE works closely with government agencies such as the Federal Emergency Management Agency (FEMA) and the National Oceanic and Atmospheric Administration (NOAA) to align its resilience guidance with national priorities. The society partners with environmental non-profits like the World Wildlife Fund and Architecture 2030 to promote low-carbon design. These partnerships help the SSE's resources and recommendations gain wider recognition and adoption. The society also collaborates with other professional organizations, including the American Society of Civil Engineers and the American Institute of Architects, to present a unified voice on issues of shared concern.

Academic and Research Collaborations

The SSE funds research fellowships and cooperative agreements with leading universities. These partnerships focus on translating cutting-edge research into practical design tools and standards. The society facilitates pilot projects where new materials or design approaches are tested in real buildings, with the results shared publicly. By maintaining close links with academia, the SSE ensures that its members have early access to the most promising innovations. This pipeline from research to practice is critical for accelerating the adoption of new technologies needed to meet climate goals.

Future Goals and the Path Forward

The Society of Structural Engineers has set ambitious goals for the coming years, aiming to significantly expand its influence and the impact of its work. These goals reflect the urgency of the climate crisis and the need for rapid, systemic change in how structures are designed and built. The SSE is committed to leading the profession toward a future where all new construction contributes positively to environmental health and social resilience.

Advancing Net-Zero and Regenerative Design

A primary goal for the SSE is to move the profession toward net-zero carbon and, eventually, regenerative design practices. This means designing structures that not only produce no net emissions but also actively restore the environment. The society is developing new guidelines that push beyond current sustainability benchmarks, challenging engineers to think about how their designs can sequester carbon, produce clean energy, and support local ecosystems. The SSE plans to release easily adoptable standards that define what net-zero structural engineering looks like in practice.

Mainstreaming Resilience in All Projects

The SSE is working to make climate resilience a standard consideration for every project, not just those in high-risk areas or undertaken by particularly forward-thinking clients. The society is developing checklists and risk screening tools that can be applied early in the design process for any project. The goal is to make it as routine to assess climate risk as it is to consider gravity or wind loads. This requires simplifying complex climate data into actionable design parameters, a challenge that the SSE is actively addressing through its research and publications.

Global Knowledge Sharing and Leadership

Climate change is a global challenge, and the SSE is committed to sharing knowledge across borders. The society is expanding its international partnerships, working with structural engineering organizations in developing countries to build local capacity. This includes translating key guidance documents into multiple languages and offering free online educational resources to engineers in regions with limited access to training. The SSE aims to be a global leader in structural engineering for climate adaptation, helping to elevate standards and best practices worldwide. By fostering an international community of practice, the society believes it can accelerate progress and ensure that the benefits of research and innovation are accessible to all, building a safer and more sustainable world. Learn more about SSE's climate action policy.