Generative Design to Reduce Embodied GHG Emissions of High-rise Buildings

Abstract

Although countries have reduced their total greenhouse gas emissions by improving energy and transportation policies, the contribution of the building sector has been widely overlooked. Embodied emissions (EE) are particularly important since they are released upfront rather than over the lifespan of buildings, making them critical for accomplishing the 2030 Canadian emission reduction targets. Accordingly, this study developed a tool to reduce EE at the conceptual stage of high-rise residential buildings. The tool also incorporates goals and constraints that are inherent to conceptual building design, such as maximizing site use, views, and complying with building codes. In a case study, it was able to achieve a 7% reduction in EE when compared to a sub-optimal solution. This research elucidated the potential of using generative design in early-stage design, proposed novel systems for the generation and evaluation of design alternatives, and delivered GenGHG, a ready-to-use, open-source tool for conceptual building design.