How Structural Devices and Dampers Can Leverage Construction Value

Innovation in structural engineering often follows a pattern of overlapping S-curves, where new technologies begin slowly, then accelerate in performance before eventually plateauing. Early-stage innovations may appear less efficient than established methods, creating a perceived performance gap. In fact, this gap represents an innovative space in which creative exploration and technical learning drives future performance gains. As innovations evolve from early stages into maturity, this gap tends to close rapidly and innovations evolve to surpass traditional solutions. Understanding this dynamic helps reframe innovation not as a costly risk, but as a strategic investment in long-term value.

One example of innovation in structural engineering is the development of Buckling Restrained Braces (BRBs), first implemented in Japan in the late 1980s. BRBs are high-performance seismic components used as diagonal members in steel buildings to absorb and dissipate earthquake forces. While they’ve gained traction over the past two decades, adoption is still limited, even though BRBs have proven effective in reducing material use and simplifying construction. At Glotman Simpson, we implemented BRBs consistently throughout the last years. One recent application is the James Cowan Theatre project, in which the BRBs allowed us to use smaller steel members and achieve more efficient soundproofing around the main chamber. Other applications with BRB have been investigated and applied on several institutional projects, where early-stage conversations are helping clients understand their advantages and how they influence construction methods. One current example is the Crescent Heights Academy project in Surrey, BC, where BRBs are being introduced through a value engineering study. The results show an expected 30% reduction in steel use for the lateral system, which corresponds to roughly 40,000 pounds, and a decrease of approximately 450,000 pounds in total concrete weight. While BRB implementation costs are offset by these and other large savings, the results demonstrate how innovative structural systems can deliver both economic efficiency and a smaller carbon footprint.

Beyond seismic resilience, new damping technologies are also transforming how we design for occupant comfort and wind performance. The subtle sway during a windstorm can feel very uncomfortable for occupants if not properly managed. At Glotman Simpson, we explore creative ways to address this challenge. For buildings that are especially tall while having compact floor plates, our team has been implementing Viscous Coupling Dampers (VCDs), a specialized structural link that is strategically placed between concrete walls to absorb energy from wind forces during severe storms.

For the design of the 62-storey CURV tower, we collaborated with Kinetica to optimize the placement of VCDs and minimize wind vibrations. Compared to conventional concrete only solutions, the use of VCDs helped avoid the usage of roughly 2,500 m³ of high-strength concrete, which would reduce the building’s embodied carbon emissions by roughly 1,000 tCO₂e. All these savings were achieved while freeing up additional space within the floorplate for residential use. VCDs are now part of our growing innovation toolbox, being integrated into several of Glotman Simpson’s upcoming tall building projects as we continue pushing the boundaries of performance, sustainability, and comfort.

At Glotman Simpson, we are driven by a fascination with creative problem-solving and a commitment to delivering efficient, high-performance engineering solutions. While the use of BRBs and VCDs illustrates how innovative structural devices can enhance resilience and comfort, these represent only a fraction of our ongoing exploration into alternative design approaches. Several of our most architecturally complex projects have required the development of novel stability strategies, such as the use of vertical post-tension cables to counteract overturning effects caused by eccentric building configurations in Alberni by Kengo Kuma and Vancouver House. These and many other examples underscore our dedication to advancing structural engineering practice through continuous innovation, collaboration, and the pursuit of smarter, more sustainable designs.

Together, we can contribute to a more sustainable built environment. If you are interested in sustainability and would like to discuss any of the topics in this article, please get in touch with us at [email protected].

For more information on our sustainability initiatives and to stay updated on our latest projects, visit our website and follow our “OnTrack” blog series.

Written by Dr. Fabricio Bagatini Cachuco, PhD, P Eng