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This research proposes a novel City Information Model (CIM), for the development of urban environmental assessments. The model combines aboveground and underground 3D assets, to inform urban policies on issues such as, rainwater management or urban green infrastructure planning. The model furnishes quantitative metrics for parcel-level characterizations, enabling an assessment of the present state and potential for development. The neighborhood of Heyvaert, and morepreciselythe perimeter of its operational masterplan, spanning 0.65 km2 in the Brussels Capital Region (BCR), was used as a case study. Geospatial data, including stratigraphy, streets, sidewalks, buildings, roofs, and green infrastructure, was gathered. From this data, environmental indicators, including rainwater collection, solar capacity, and green cover, were derived at the building parcel level. Subsequently, the model was presented through an interactive WebGIS platform. The research evaluates the advantages and disadvantages of the proposed CIM model to assist in urban environmental assessment planning. The study also investigates incorporating interactive features in a WebGIS platform, with the aim of creating a participatory 3D CIM that actively involves stakeholders.
Ntassiou et al. (Mon,) studied this question.