Boosting the uptake of circular integrated solutions in construction value chains

CIRC-BOOST is a 4-year project, funded under the Horizon Europe Programme, that focuses on testing and upscaling circular solutions in buildings and the construction sector through five pilot projects deployed in different European regions. The pilots will demonstrate, at large-scale, novel and integrated solutions for demolition, construction waste processing, management, and valorisation in new products. The main objective of the project is to create a 3D Web Map with material stock assessments that enables large scale uptake of circular construction.

DCS is contributing to workpackage 4, which plays a central role in the project aiming to create a semi-automated semantically enriched CityGML LOD3 cities’ models of the existing residential buildings at a large urban scale in a minimum of three pilot countries using different DTs in the AEC industry.

Our primary focus is on developing and testing a protocol for upgrading existing 3D building models from CityGML LOD2 to LOD3, enriched with semantic information. Using a combination of CityGML datasets, point cloud data and photogrammetry obtained from pilot sites, we are working toward the semi-automated reconstruction of building geometries—particularly facade elements such as windows, doors, balconies, and chimneys. The aim is to explore advanced methods for generating CityGML LOD3 models and to develop workflows that can help automate this process, making it scalable and applicable to different urban contexts.