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The Interplay of Site and Construction Systems Decisions for Complex Urban Infrastructures

For development of urban infrastructures, such as smart cities and reconstruction of existing energy, transit, and population hubs, critical decisions are made during the early shaping of these projects. Many stakeholders are involved, including non-experts, some of whom may be impacted but not beneficiaries of the investments. We refer to a subset of the decisions as “systems architectural decisions” – not because these decisions relate to the architecture professions – but because they are meaningful, impactful, and sensitive decisions which drive many of the downstream choices and emergent impacts of the project. Often these early decisions are based predominantly on the site itself and its operation. In this paper we explore systems models for stakeholders of complex, urban infrastructures including architectural decisions related to implementation, such as phasing, construction, and project organization. In research underway on a transit hub project in Tokyo, Japan, we explore how inclusion of these decisions as part of a broader morphological matrix of site decisions influences the tradespace of emergent outcomes. In this way we seek to bring strategic discussion of construction options into the early framing of urban infrastructure projects.