Functional analysis as a method on sustainable building design: A case study in educational buildings implementing the triple bottom line

•Sustainability and Value Management.•The consideration of the triple bottom line in the built environment.•Functional Analysis in Green Building Design. Despite the popularity and findings of research on the application of green buildings and sustainable design, more attention should be given to applying the triple bottom line in educational facilities with a different approach. It is believed that the function of space, the definition of performance, and value management are all popular approaches for implementing the triple bottom line. Nevertheless, applying the triple bottom line to the prototype of an existing educational building will help identify the needs and requirements for sustainable building design. This study focuses on integrating sustainable design elements into a holistic approach. Furthermore, the study considers the integration of the three primary factors of sustainable design: people, planet, and profit. Additionally, the case study for this thesis is to measure the environmental and economic value of implementing the triple bottom line in the educational building at St. Fatima International School in the New Capital. The research will show that functional analysis plays an important role in sustainable design. This can be found in the implementation of value management and sustainable constriction. Thus, according to the case study design, the triple bottom line application will focus on people by considering implementing biophilic design patterns to have indoor and outdoor healthy spaces. Moreover, for the planet, the case study will show the impact of reducing CO2 emissions and recycling content on avoiding resource depletion through the use of One-click LCA, the life cycle assessment tool. Finally, the profit will be achieved by applying the Excellence in Design for Greater Efficiencies (EDGE) rating system and life cycle cost analysis using the Cravezero tool, greatly impacting the economy in the long term.